文章摘要
王娜,辛远航,张鑫雨,尤家奇,张静,姜岩.卡拉胶/金属氧化物协同聚磷酸铵制备阻燃天然橡胶[J].精细化工,2020,37(12):
卡拉胶/金属氧化物协同聚磷酸铵制备阻燃天然橡胶
Carrageenan/metal oxide synergistic APP to prepare flame-retardant natural rubber
投稿时间:2020-06-10  修订日期:2020-08-10
DOI:
中文关键词: 天然橡胶  卡拉胶  金属氧化物  聚磷酸铵  膨胀型阻燃剂
英文关键词: natural rubber  carrageenan  metal oxide  ammonium polyphosphate  intumescent flame retardant
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
王娜 沈阳化工大学材料学院 iamwangna@sina.com 
辛远航 沈阳化工大学 中西高等材料研究院  
张鑫雨 沈阳化工大学 中西高等材料研究院  
尤家奇 沈阳化工大学 中西高等材料研究院  
张静 沈阳化工大学 中西高等材料研究院  
姜岩 沈阳化工大学 中西高等材料研究院 jiangyan@sina.com 
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中文摘要:
      将卡拉胶(KC)、聚磷酸铵(APP)分别和Fe2O3、CuO、Al2O3、MnO2 4种金属氧化物(MO)三者复配构成的协同阻燃剂(KC/MO/APP)加入到天然橡胶(NR)中,制备NR/KC/MO/APP复合材料。通过极限氧指数(LOI)、垂直燃烧(UL-94)、锥形量热(CCT)测试了复合材料阻燃性能。结果表明,NR/KC/MO/APP复合材料的UL-94均达到V-0等级,LOI在26.5%~27.3%之间,具有较好的阻燃性。与NR相比,NR/KC/CuO/APP复合材料的热释放速率峰值(pHRR)和总热释放量(THR)分别下降了63.7%和42.0%。同时KC/MO/APP还有抑烟作用,NR/KC/Fe2O3/APP复合材料总烟释放量(TSP)比NR下降了35%,处于最低水平。TGA结果显示,NR/KC/CuO/APP复合材料W800达到34.85%,比NR/APP提高了28.7%。SEM分析表明,NR/KC/MO/APP复合材料体系炭层更致密,表明KC/MO与APP的协同作用对形成稳定炭层起着重要作用。DMA和力学性能测试发现,NR/KC/MnO2/APP复合材料力学性能最优,其拉伸强度和断裂伸长率比NR/APP分别提高32.6%和20.9%,表明MnO2的加入可弥补阻燃剂对NR造成的力学性能损失。
英文摘要:
      Carrageenan (KC), ammonium polyphosphate (APP) was compounded with four metal oxides (MO) Fe2O3, CuO, Al2O3, MnO2, respectively to obtain synergistic flame retardants (KC/MO/APP), thenNR/KC/MO/APP composites were prepared by adding KC/MO/APP into NR. The flame retardancy of the composites was tested by limit oxygen index (LOI),vertical combustion (UL-94) and cone calorimetry (CCT). The results showed that the UL-94 of NR/KC/MO/APP reached the V-0 level,and the LOI was between 26.5% and 27.3%,showing a good flame retardant effect.The peak heat release (pHRR) and total heat release (THR) of NR/KC/CuO/APP decreased by 63.7% and 42.0% compared with that of NR. At the same time,KC/MO/APP also has a smoke suppression effect, the total smoke release (TSP) of NR /KC/Fe2O3/APP composites is the lowest, which is 35% lower than that of natural rubber. Thermogravimetric analysis (TGA) test results show that the NR/KC/CuO/APP composite’s W800 reaches 34.85%, which is 28.7% higher than NR/APP. The analysis of residual carbon by SEM found that the carbon layer of the NR/KC/MO/APP system is denser, which shows that the synergistic effect of KC/MO and APP plays an important role in forming a stable carbon layer.Through DMA and mechanical property tests,it is found that the mechanical properties of NR/KC/MnO2 /APP are the best.Compared with NR/APP, the tensile strength and elongation at break are increased by 32.6% and 20.9%, this indicates that the addition of MnO2 can supplement the mechanical properties loss caused by the flame retardant to NR.
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