Abstract:Abstract: A series of HPSA hyperbranched surfactants were synthesized and then analyzed by infrared and elemental analysis. This paper aims to studied the influence of dosage of N-lauryl monoamido sulfo-succinic acid, pH value, electrolyte and temperature on the stability of emulsion from three different aspects: macroscopic phase separation, mesoscopic droplet size and microscopic interface film stability. The results showed that the emulsification performance increased first and then decreased with the increase of substitution degree. HPSA has a pH response, which is more hydrophobic under acidic conditions, and more hydrophilic under alkaline conditions and it can form a stable emulsion in a wide pH range (6-11). By compressing the double charged by Na at the concentration 0-1.5?105mg/L, the strength of the interface film formed by HPSA at the oil-water interface is increased, the zeta potential is lowered, and the stability of the emulsion is enhanced. The temperature mainly affects the molecular thermal motion of HPSA, which makes the collision rate of the emulsion formed by HPSA on the interface film increase and the stability decreases. The stability of emulsion is better below 120℃. Microscopically, the molecular structure of HPSA is rigid, which weakens the change of interfacial film caused by droplet collision. HPSA molecule is not easy to flow with the curvature of the liquid film during the collision of emulsion droplets. Hyperbranched surfactants self-assemble in aqueous solution to form micelle aggregates with different hydrophilic/lipophilic properties, which makes it has stronger ability of solubilizing and emulsifying crude oil

Abstract:In order to prepare a separator which had high electrolyte uptake and good thermal dimensional stability, the poly(phthalazinone ether ketone)(PPEK)/SiO2 electrospun membranes were prepared by electrospinning technology. The structures and properties of electrospun membranes and batteries were tested by SEM, electrochemical workstation, LAND battery cycle systerm and so on. The structures and thermal properties of the electrospun membranes with different SiO2 content were studied. The electrospun membranes were used as separators to assemble lithium ion batteries, and electrochemical performances and battery performances were studied. The results showed that electrospun membranes’ porosity, electrolyte uptake, ionic conductivity increased gradually with the increase of SiO2 content. The thermal shrinkage rate of PPEK electrospun membranes were 0 when heat treated at 200 °C for 1 h, which displayed good thermal dimensional stability. When the mass fraction of SiO2 was 6%, the porosity and electrolyte uptake reached 179% and 1031%, and ionic conductivity was 2.63×10-3 S/cm. Morever, the discharge capacity of electrospun membrane was 332~350 mAh/g, which exhibited better cycle performance and excellent capacity retention.

Abstract:The anode materials of the magnesium batteries are surface-modified by dip coating using a nano-powder emulsion (EMT) with a small molecule water magnetization. XRD and SEM were used to analyze the mi-crostructure and surface morphology of the samples. The effects of different coatings on the corrosion re-sistance of the magnesium anodes were investigated by means of immersion test, EIS and Tafel plots at 25 ℃ in an electrolyte solution with 3.5 % NaCl solution. As a result, the corrosion current densities of the magnesium anodes respectively coated 3, 6 and 9 times are 106.8, 90.74 and 89.0 μA/cm2, which were lower than that of uncoated samples (283.8 μA/cm2). The SEI film forms on the surface of the materials by EMT can effectively inhibit the corrosion behavior of the magnesium anode without affecting the phase structure of the materials, and the corrosion resistance increases with the increase of the number of coatings.

Abstract:A modified ethylenediamine/copper chloride composite with temperature-sensitive continuous multi-color property was prepared by silica sol-gel modification of ethylenediamine copper chloride complex. The ef-fects of the amount of tetraethyl orthosilicate in the sol component on the stability of the composite and the thermochromic properties of the initiator hydrochloric acid were investigated. The thermosensitive col-or change mechanism of the modified ethylenediamine/copper chloride composite was studied. The re-sults show that the water ligand of the composite material is replaced by colorless to yellow color change at 120 ℃. At 160 ℃, the water molecules re-coordinate with the central copper ion, and the nitrogen ligand undergoes proton transfer. Change from yellow to blue. The modified tetraethyl orthosilicate has better stability. With the increase of hydrochloric acid concentration, the coordination probability of chloride ion increases, and the color conversion of modified ethylenediamine/copper chloride composite material is deeper.

Abstract:To study the transfer behavior of non-phenyl ester plasticizers in cigarette mainstream smoke, add 12 non-phenyl ester plasticizers to cigarette cut tobacco, and use Cambridge filters to capture mainstream cigarette smoke, Cambridge after the filter and the cigarette butts were extracted by dichloromethane, the transfer ratio of the non-phenyl ester plasticizer in the mainstream smoke and the rejection ratioof cigarette butt were determined by GC/MS/SIM. The results show: The transfer ratio of 12 non-phenyl ester plasticizers in mainstream smoke was 7.86 % ~ 15.11%; The retention ratio of 12 non-phenyl ester plasticizers in cigarette butts was 18.65 % ~ 36.54 %; The rejection ratio of non-phenyl ester plasticizers in cigarette butts is significantly higher than the transfer ratio of non-phenyl ester plasticizers in mainstream smoke.The transfer ratio of diethyl adipate in mainstream smoke is the lowest, while the rejectionratio of cigarette butts is the highest.

Abstract:Abstract: Emulsions with high monodispersity were prepared through a hydrolysis-polymerization process. The influence of process parameters like emulsifier HLB, reaction time, emulsifier content and monomer content were studied. Then, the emulsion was coated as a template and organic silicone was used as a shell layer to obtain hollow microspheres. The emulsions and microspheres were characterized by Zetasizer Nano ZS90, SEM, TEM, EDS and FTIR. The results showed that highly monodispersed emulsions could be prepared at room temperature for 6 h. By changing the amount of emulsifier and original monomer, the particle size of the emulsion could be turned from 346 nm to 472 nm. Then, monodisperse hollow mi-crospheres with regular morphology could be obtained when the mass fraction of the emulsifier was less than 0.003% by using the emulsion as a template, and the main component of hollow microspheres was organic silicone. By comparing with hard templating method, the preparation process was relatively simple and the template could be removed by washing with ethanol.

Abstract:In this paper, the Multiple headspace solid-phase microextraction (MHS-SPME) principle and influencing factors of the technology are discussed in detail, and the advantages and disadvantages of the method are compared and analyzed. The applications of multiple headspace solid phase microextraction in food and agriculture fields are summarized. For example, the application in analysis of red wine, cheese, tomato and mushroom. The problems and development prospects of this method are discussed as well.

Abstract:In this paper, manganese ferrite / biochar composites were synthesized by one-step hydrothermal method with biochar as carrier, and the adsorption characteristics and removal efficiency of heavy metal ions Cd2 , was studied. The composite was characterized by SEM,XRD,FT-IR and XPS, and the effect of initial pH,initial concentration on the adsorption of Cd2 on manganese ferrite/biochar composites were discussed , the experimental data were subjected to kinetic and isotherm fitting. The results show that under the experimental conditions of 25℃, the optimum pH for adsorption of Cd2 by manganese ferrite/biochar composites is 7.0. After 60 min adsorption, the adsorption equilibrium is reached, and the maximum saturated adsorption capacity was 32.74mg/g. The adsorption kinetic and adsorption isotherm are respectively conformed to the Pseudo-second-order kinetic and Langmuir isotherm models, and the monomolecular chemisorption plays a dominant role in Cd2 adsorption process. When the manganese ferrite / biochar composites was regenerated for 5 times, it still showed good regenerative adsorption properties for Cd2 .

Abstract:The mass transfer performance and influence factors on dissolved oxygen inside of ammonium oxidizing bacteria biofilm in fluid-bed bioreactor were analyzed based on the theatrical modelling and experiments. One-dimensional modeling approach for this study based on classic model of reac-tion-diffusion-convection mixing was developed and solved. It is released that the seepage velocity and diffusivity have a great effect on the max depth DO can get to; the higher the seepage velocity and diffu-sivity and feeding matrix concentration are, the deeper in biofilm dissolved oxygen can reach and the higher DO concentration is inside of the biofilm. A sequencing batch biofilm reactor (SBR) was set up to culture aerobatic biofilm enriched by ammonia oxidation bacteria (AOB) on K1 carrier. Organic was add-ed to accelerate the biofilm culture process in the startup phase. More than 80% of ammonia in the in-fluent was converted to nitrite and the biofilm with a thickness of 0.1-0.3 mm was achieved. Oxygen concentration along the direction of the biofilm depth was tested by PA2000 oxygen microelectrode. The results from both theatrical modelling and experiments showed the same DO gradient rules in the biofilm and experimental results agreed well with the model.

Abstract:N-isopropylacrylamide modified acrylate resin (NAB) and silicone modified acrylate (SBA) emulsion were prepared with reactive emulsifiers. The exterior wall-coating was prepared by applying these two kinds of emulsion as film former, sothiazolinone (MSDS) as antibacterial?agent and calcium carbonate, talcum powder as fillers. Based on the LCST property of NAB resin, the MSDS in this coating can be re-leased with temperature-controlled, which can effectively solve the problems of short mildew-proofing period. This study will provide new strategies for the development of mildew-proofing exterior wall-coating.

Abstract:A series of Mg/Al/Zr ternary hydrotalcite-like materials with different Zr4+ contents were prepared by co-precipitation method. The phosphate adsorption performances of these materials were also studied. The structural and textural properties of these materials were characterized by XRD, DRIFTS and nitrogen adsorption-desorption experiments. The effects of initial pH and competitive anions on the phosphate adsorption capacity were also investigated. The results show that the addition of Zr4+ enhanced the positive charge density of the hydrotalcite-like layer and increased the interlayer spacing, which was beneficial to the adsorption of phosphate anions. The phosphorus adsorption process of Mg/Al/Zr hydrotalcite-like followed the pseudo-second-order kinetic model. The adsorption isotherm followed the Langmuir model. As the molar ratio of (Zr4+)/(Al3++Zr4+) was 0.3, the theoretical saturated adsorption uptake of Mg/Al/Zr hydrotalcite-like reached the maximum value of 76.6 mg/g that was 28.7% higher than that of Mg/Al hydrotalcite. The acidic environment was conducive to the adsorption of phosphate, while the competitive adsorption of divalent anions significantly reduced the phosphorus adsorption performance. The phosphorus adsorption of Mg/Al/Zr hydrotalcite-like was the result of the synergistic effect of electrostatic attraction and anion exchange.

Abstract:Natural renewable and degradable potato starch was used as raw material to synthesize a flexible trans-parent film which can be repeatedly bent and folded. Conductive silver nanowires were prepared by pol-yol method and coated evenly on the surface of starch film by spin coating. The two are combined by in-termolecular force.The morphology, structure and stability of the product were analyzed and the influ-ence law and application efficiency of composite conductive film were explored. The light transmittance of the starch film obtained by experiment is 92%, the roughness is 3.92nm, and the tensile stress is 29.01MPa；Conductive silver nanowires are 60nm in diameter and over 20um in length. The deposition density of silver nanowires has obvious influence on the conductivity, light transmittance and roughness of flexible transparent conductive films. With the increase of the deposition density of silver nanowires, the square resistance decreases, the light transmittance shows a linear decreasing trend, and the rough-ness increases accordingly. When the deposition density exceeds 300mg/m2, the square resistance Rs is lower than 22.6 ?/□, the light transmittance T is about 65%, and the photoelectric excellent value F.O.M is higher than 35. Therefore, it is a good substitute material for ITO conductive films. When the compo-site film is repeatedly bent and folded, the change of the square resistance is less than 5%, thermogravi-metric analysis found that the thermal decomposition temperature is higher than 250 ℃ ，Which is fa-vorable for further high-temperature conductive treatment and the square resistance increases slightly with time when the composite film is placed in air.

Abstract:Diamond/copper composites have high thermal conductivity, and they can be used to solve the problems of packaging and heat dissipation of future high heat flux electronic component. They have attracting more and more attention. In this paper, the manufacturing methods of diamond/copper composites, the influencing factors of thermal conductivity and interface problems are reviewed. Four main preparation processes, including hot pressing sintering, high temperature and high pressure sintering, spark plasma sintering and infiltration, are summarized. Diamond particle parameters and sintering process parameters have important effects on the thermal conductivity of diamond/copper composites materials. There are two methods to solve the interface problems of diamond indicate premetallization and copper matrix alloying. The above topics and the applications are the emphasis and development trend of diamond/copper composites in the future.

Abstract:A novel method for the synthesis of antioxidant 168 has been developed in continuous flow, which has the advantages of short reaction residence time, simple operation and high safety performance. Antioxidant 168 was synthesized by esterification of 2,4-ditert-butylphenol and phosphorus trichloride in continuous flow, and the effects of reaction solvent, type and dosage of acid-binding agent, reaction temperature and reaction residence time on the yield of antioxidant 168 were investigated. The desired product was characterized by melting point, GC, 1H NMR, 13C NMR and HRMS. The results showed the optimum conditions were determined as follows: the molar ratio of 2,4-ditert-butylphenol, phosphorus trichloride and triethylamine was 3.0:1.0:3.3, the reaction temperature was 75℃, the reaction residence time was 240s. The yield of antioxidant 168 was 90%under the optimum conditions, and the purity exceeded 99%.

Abstract:A starch-based superabsorbent polymer (SSAP1) was synthesized by one-step method using corn starch and acrylic acid as raw materials, ammonium persulfate (APS) as initiator, and N, N'-methylene-bis-acrylamide (MBA) as crosslinking agent, in which, sodium hydroxide was added into the system in advance to dissolve corn starch. The factors affecting the water absorbency of the product such as mass ratio of acrylic acid to corn starch, neutralization degree of acrylic acid, dosage of initiator and dosage of crosslinking agent were investigated by single factor experiments. The microstructure of SSAP1 was analyzed by FTIR, XRD and SEM. Besides, the graft rate and application performance of SSAP which was a starch-based superabsorbent polymer prepared by gelatinized starch at high temperature and SSAP1 were compared. The results showed that the corn starch dissolved by alkali were successfully grafted into poly(acrylic acid) chains, and the crosslinking reaction took place to form a super absorbent resin. This method can effectively destroy the internal hydrogen bond of starch molecule and improve the reaction efficiency. SSAP1 exhibited better water absorbency and repeated water absorption performance than SSAP. The absorbency of SSAP1 was 464 g/g for distilled water and 34 g/g for sodium chloride aqueous solution (0.1 mol /L), higher than the corresponding values of SSAP (428 g/g and 26 g/g).

Abstract:Six Salen(M) complexes, I~VI, were synthesized from salicylaldehyde Schiff base ligands and Co(NO3)2 and Cu(NO3)2. The simulated oil system was prepared by using 1-hexanethiol, dibutyl sulfide and 2-methylthiophene as model compounds to investigate the catalytic oxidative desulfurization performance of complexes I~VI. The effects of central metal ions and ligands on the oxidative desulfurization performance of complexes I~VI were analyzed. The results showed that the order of the total desulfurization effect for the six desulfurizers on the simulated oil in 75 min was VI>V>IV>I>III>II, and the total desulfurization rate of complex VI was 31.9%. Among them, complex V exhibited the best removal effect for 1-hexanethiol and dibutyl sulfide with 74.2% and 65.1% removal rate, respectively. While complex VI had the best removal effect for 2-methylthiophene with a removal rate of 24.4%. According to the structure-property relationship analysis, the stronger the coordination ability between the central metal ion and O2, the larger the conjugated system of the ligand, and the higher density of electron cloud, the better the desulfurization performance of the complex. The products before and after oxidation of the single sulfide simulated oil system were analyzed by infrared spectroscopy (IR) and ion chromatography (IC). It was found that three sulfides were oxidized to form corresponding sulfones or sulfoxides, and 1-hexanethiol and dibutyl sulfide were further oxidized to form SO32- or SO42-.

Abstract:Two fluorinated fluorescent dichroic liquid crystal dyes DC-1 and DC-2 were synthesized through the Sonogashira coupling reaction by the raw materials of 8-(4-iodophenyl) fluoroboropyrrol and the 4-acetylphenylcholesterol ester or 4-acetylphenylpentyl dicyclohexyl methanol ester. Their chemical structures were both identified by 1H NMR, 13C NMR and HRMS. After the spectrum test conducted on the dye DC-1 and DC-2, the maximum absorption and emission wavelengths of dye DC were 503 and 517 nm respectively, the dye DC emitted green fluorescence. Based on the Guest-Host (G-H) effect, dye DC was dissolved in the host liquid crystal E7 as the guest component, the absorption dichroic ratio of DC-2 in the host liquid crystal E7 was as high as 8.91, and the ordered parameter was 0.73 which can be used in the Guest-Host liquid crystal display (GH-LCD). The mesomorphic properties of dye DC were tested by differential scanning calorimeter (DSC) in a certain temperature range. The liquid crystal texture of dye DC was verified by polarizing microscope (POM).

Abstract:A temperature-sensitive glucose random polymer p (diethyleneglycol methacrylate) -co-p ( 6-O-vinyladipoyl-α-D-galactose) P(DEGMA-co-OVNGlu) was prepared by enzymatic reaction and reversible addition-fragmentation chain transfer (RAFT) polymerization using 6-O-vinyladipoyl-α-D-galactose (OVNGlu) and thermoresponsive diethyleneglycol methacrylate (DEGMA) as raw materials. The polymer structure and glycopolymer-lectin (Con A) mutual recognition were studied by means of Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (1H NMR), gel permeation chromatography (GPC), ultraviolet spectrophotometer (UV-Vis) and dynamic light scattering (DLS). The results showed that P(DEGMA-co-OVNGlu) was successfully prepared. Ultraviolet and dynamic light scattering results show that the random polymer containing glucose has certain recognition ability for Con A， with the extension of the conjugation time, the recognition of the glycopolymer and lectin reached saturation at 20 min, and then gradually formed cross-link.

Abstract:Using cyclopropyl methyl ketone as starting material and phosphorus pentachloride as chlorination reagent, cyclopropyl acetylene, the key intermediate of Efavirenz, was synthesized by chlorination followed by elimination. Aiming at the different eliminating reactivity between the dichloride and monochloride intermediates, the stepwise elimination reactions were carried out in the presence of triethylamine and potassium hydroxide, respectively. A one-way yield as high as 49% of cyclopropyl acetylene was obtained based on cyclopropyl methyl ketone. At the same time, the recycling process for triethylamine has been established, which further reduces the cost and has good prospects for industrialization.

Abstract:Abstract: In this study, the polysaccharides of Rhodiola rosea polysaccharides extracted from the aqueous two phase system of ethanol/ammonium sulphate as a active reagent be treated as the antimicrobial factor, a novel antibacterial films material would be prepared by taking the technology of natural circulation method with the glycerinum as the plasticizer, the gelatin as the filmogen, the calcium chloride as the cross-linking agent, the starch as the Pasting agent and the glass pane as the film carrier. In order to investigate the optimum additive amount of films material, the index of evaluation that it cover the strength of extension, moisture-vapor transmission, the degradation properties and antibacterial activity of films material was be established. The antimicrobial results show that the polysaccharides amounts merely contribute to antimicrobial activity, When the polysaccharide content of rhodiola rosea was 6 mL, it can obtained maximum antibacterial rate presenting to Staphylococcus aureus and Bacillus subtilis 93.04% and 92.04% respectively. The other tests results suggested that the optimum additive amount of preparing the perfect films material should be the polysaccharides 6 mL, the glycerinum 1.5 g, the gelatin 1.0 g and the calcium chloride 1.0 g. The prepared technology of antibacterial and edible films by using the natural circulation is easy to master ,to low cost, to be good antibacterial effect and to be easy degradation, which will be the enormous potential in the field of materials without the pollution to the environment.

Abstract:Janus particles are asymmetric structures containing two different chemical compositions in the same particle. The amphiphilic Janus particles are two different chemical groups containing hydrophilic groups and hydrophobic groups on the opposite side, which is a new type of nanomaterial. In this paper, the amphiphilic Janus particles prepared by template method and their application fields are reviewed, including hard template method, soft template method, sacrificial template method and template-free method. The research progress of amphiphilic Janus particles in surfactants, dental adhesives, microcapsules, functional coatings, catalysts and biosensors are reviewed.

Abstract:Photonic crystals are artificial crystals whose dielectric constant varies periodically as the light wave-length. Benefited from the band structure, photonic crystal can modulate the luminescence of fluorescent materials. We prepared Shape memory photonic crystals (SMPCs) through de-template method con-structed by polyethylene glycol (600) diacrylate (PEGDA) and tetrafunctional aliphatic polyurethane acrylate (PUA) copolymer system with a mass ratio of 1:5, then investigated the effect of SMPCs on the luminescence of fluorescent objects embedded in it. The results showed that the SMPCs had a lumines-cent inhibition effect of 83% on fluorescein dyes. Due to the plastic deformation of copolymer, this SMPCs has good pressure compilation and temperature trigger recovery performance. Based on features mentioned above, SMPCs can carry out reversible transformation between diverse microstructures, and then realize the reversible modulation of luminescence. After patterning technic on the surface with digi-tal stamp, 100μm grating and 50×50μm dot matrix photomask, the devices will present diverse patterns under different optical conditions.

Abstract:The interconnected polyaniline coated carbon nanofiber (PANI/CNF) composite nanowire, with interconnected N-doped carbon nanofiber (CNF) framework and PANI coating layer, had been synthesized via a vacuum-assisted intercalation in-situ oxidation polymerization method. The PANI/CNF composite nanowire samples were characterized by TEM, SEM, TG, FTIR, Raman, XRD, XPS and BET. The electrochemical properties of the samples were examined using CV, EIS, and GCD. The results showed that the interconnected PANI/CNF composite nanowire with the hierarchical structure in the shape of thorns. As supercapacitor electrode materials, the typical PANI/CNF40 sample with CNF content of 40%, had a high specific capacitance of 820.31 F/g (1.0 A/g), and specific capacitance retention rate of 74.8% (20.0 A/g). The specific capacitance was 89.7% of the initial specific capacitance after 2000 cycles (10.0 A/g).

Abstract:In order to improve the antifouling ability of the base material, a fluorine-free superhydrophobic composite coating was prepared on the surface of the substrate. In this work, the Silica (SiO2) micro-nanoparticles were modified by hexadecyltrimethoxysilan (HDTMS). Subsequently, the modified SiO2 micro-nanoparticles were blended with organic silane. Finally, a stable fluorine-free hydrophobic composite coating on the surface of the substrate was prepared via the hydrolysis and polymerization of organic silane on the modified SiO2 micro-nanoparticles. The chemical compositions, morphology and hydrophobic properties of the coatings were characterized by Fourier Transform Infrared Spectrum (FTIR), Thermogravimetric analyses(TGA) , Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), and water contact angle (WCA) measurements, respectively. The results show that the composite coating surfaces had rough micro-nano scale structure, with excellent self-cleaning properties and wear resistance. Compared with the coating without the abrasion treatment, the contact angle of the coating with an abrasion treatment increased from 151° to 161°.

Abstract:Lignin from different technical sources were coated on the surface of titanium dioxide (TiO2) via one-step hydrothermal esterification reaction and nanoscale lignin/TiO2 composites were obtained. The results of DLS analysis showed that the particle size of TiO2 increased by 8-12 nm after modification. The mass fraction of lignin in the composites was 7.6%~9.0% by TG analysis. The esterification reaction that happened between the carboxyl groups of lignin and the hydroxyl groups on the surface of TiO2 was confirmed by XPS, and coated lignin could be observed by TEM. The lignin/composite nano composites were then used as the sole sunscreen component to prepare sun creams, and the sun protection factor (SPF) values of the sun cream was measured and compared with that of the sun cream containing same amount of TiO2 only. The results showed that TiO2 modified by organosolv lignin (OL) had the best sunscreen performance and the SPF values of sun creams containing mass fraction of 10% and 20% of OL/TiO2 reached to 44 and 73, respectively, which were much higher than that containing raw TiO2. In addition, the prepared sun creams had better feeling. which met the daily sun protection requirement. Finally, the UV-blocking enhancement mechanism of lignin/TiO2 was proposed.

Abstract:Inspired by the lubricated surface of pitcher plant and the guiding structure of the surface of rice leaf, a lubricating coating with simple process, stable chemical properties and oriented anti-adhesion was prepared. The oriented rough structure was obtained by grinding the plastic substrates such as polypropylene (PP) with sandpaper in the same direction. In this structure, 1H, 1H, 2H, 2H-perfluorooctyl trichlorosilicon was chemically deposited after ultraviolet treatment, and then perfluoropolyether was poured into the surface micro-structure to obtain the lubricating surface. SEM, roughness tester and contact angle tester were used to analyze the coating surface. The surface grooves obtained by directional polishing provided conditions for storing lubricants. The water contact angle of PP surface with Ra≈1.891um was 135°, and the water contact angle after fluorosilane deposition was 141°. The PP lubricating coating obtained after impregnating the lubricating liquid had the contact angle of 105° and 59° for water and dodecane, respectively, the oriented title angle of water and dodecane were 2° and 4° respectively and the inclination angles of the oriented water and dodecane are 2° and 4°, respectively; compared with the untreated surface, after being immersed in honey and shower gel for 0.5 hours the adhesion amount of the lubricated PP coating reduced by 89.4% and 86.7%.

Abstract:A series of supported bimetallic RuPd catalysts were prepared by wet impregnation method using Al2O3, PdCl2 and RuCl3 as raw materials under the conditions of controlling the immobilization sequence, prepa-ration process and calcination temperature. And then these catalysts were used for the selective hydro-genation of dimethyl terephthalate (DMT) to dimethyl cyclohexane-1,4-dicarboxylate (DMCD). In which, the total loading of Ru and Pd was 0.3% (based on the total mass of the catalyst, the same below), and m(Ru) : m(Pd)= 1:1. The results showed that the catalyst had the best catalytic performance which was prepared using impregnation sequence of first Pd then Ru (Ru-Pd type) and impregna-tion-drying-impregnation-drying-calcination (IEIEC) preparation process and then calcinated at 450℃. Under 6.0 MPa and 180℃, the DMT conversion, DMCD selectivity and DMCD yield reached 89.6%, 96.0%, and 85.9%, respectively, which could be ascribed to the inhibition of the formation of large particle size, the smaller particle size and distribution, the higher specific surface area and total pore volume, the higher molar proportion of surficial Pd, and the lower surficial Ru/Pd molar ratio.