Page 184 - 《精细化工》2022年第6期
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第 39 卷第 6 期                             精   细   化   工                                  Vol.39, No.6
             2022 年 6 月                              FINE CHEMICALS                                 June  2022


              橡塑助剂
                   壳聚糖包覆三聚磷酸钠微胶囊-可膨胀石墨协同


                                          阻燃天然/杜仲并用胶



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                      刘艳吉 ,程欣宇 ,李   政 ,付琬璐 ,李庆鹏                                   1,2 ,王   娜    1,2*
                 (1.  沈阳化工大学  辽宁省特种功能材料合成与制备重点实验室,辽宁  沈阳  110142;2.  沈阳先进涂层材
                 料产业技术研究院有限公司,辽宁  沈阳  110142)
                 摘要:以三聚磷酸钠(STPP)为芯材,壳聚糖(CS)为壁材,通过离子凝胶法成功制备了微胶囊 CS@STPP。
                 采用 SEM、FTIR 及 TG 对所制备的微胶囊形貌、化学结构和热性能进行了表征。将 CS@STPP 与可膨胀石墨(EG)
                 以一定比例添加到天然/杜仲(NR/EUG)并用胶中,探究 CS@STPP 与 EG 之间的协同作用对 NR/EUG 阻燃性
                 能的影响。采用极限氧指数(LOI)、垂直燃烧测试(UL-94)、锥形量热仪、拉曼光谱、SEM 和电子万能试验机
                 对 NR/EUG 并用胶的阻燃性能进行了分析。结果表明,当 m(CS@STPP)∶m(EG) = 4∶1 时,制备的 NR/EUG 并
                 用胶(记为 FRBR-5)阻燃效果最优,这归因于 CS@STPP 与 EG 的协同作用使形成的炭层结构更稳定致密、连
                 续性更好。此外,FRBR-5 的燃烧性能显著降低,其 LOI 达到 28.4%,UL-94 达到 V-0 等级,最大热释放速率为
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                 471.7 kW/m 。
                 关键词:壳聚糖;三聚磷酸钠;微胶囊;天然橡胶;杜仲橡胶;橡塑助剂
                 中图分类号:TQ332.5      文献标识码:A      文章编号:1003-5214 (2022) 06-1250-07



                 Chitosan coated sodium triphosphate microcapsules-expandable graphite
                    synergistic flame retardant natural rubber/eucommia ulmoides gum


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                        LIU Yanji , CHENG Xinyu , LI Zheng , FU Wanlu , LI Qingpeng , WANG Na  1,2*
                 (1. Liaoning Provincial Key Laboratory for  Preparation and Application of Special Functional Materials, Shenyang
                 University of Chemical Technology,  Shenyang  110142, Liaoning, China; 2. Shenyang  Research Institute of Industrial
                 Technology for Advanced Coating Materials, Shenyang 110142, Liaoning, China)
                 Abstract: Sodium tripolyphosphate (STPP) and chitosan (CS) were used as core material and wall material
                 to prepare microcapsules CS@STPP by ionic gel method. The surface morphology, chemical structure and
                 thermal property of microcapsules were  characterized by SEM,  FTIR and TG. The effect of synergistic
                 effect between  CS@STPP and  expandable graphite  (EG) on flame retardant  performance  of natural
                 rubber/eucommia ulmoides gum (NR/EUG) was investigated by adding CS@STPP and EG to NR/EUG in
                 a certain  proportion.  The flame retardancy of NR/EUG  was analyzed  by limiting  oxygen index  (LOI),
                 vertical combustion test (UL-94), cone calorimeter, Raman spectroscopy, SEM and electronic  universal
                 testing machine. The results showed  that the  prepared NR/EUG with  m(CS@STPP)∶m(EG) =  4∶1
                 (denoted as FRBR-5) had the best flame retardant effect, which was attributed to the synergistic effect of
                 CS@STPP and EG to the formation of more stable and compact carbon layer structure and better continuity.
                 In addition, the combustion performance of FRBR-5 was  significantly reduced, with LOI of  28.4%  and
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                 UL-94 reaching V-0 rating, and the maximum heat release rate was 471.7 kW/m .
                 Key words: chitosan; sodium triphosphate; microcapsules; natural rubber; eucommia ulmoides gum; rubber
                 and plastics auxiliaries

                 收稿日期:2021-11-29;  定用日期:2022-02-08; DOI: 10.13550/j.jxhg.20211216
                 基金项目:国家自然科学基金(51973124);功能性高端镁质化工品生产技术及示范应用(2020YFC1909302);辽宁省“兴辽英才计
                 划”项目资助(XLYC2005002);2021 年辽宁省“揭榜挂帅”科技攻关项目(2021JH1/10400091);2020 年辽宁省教育厅科学研究经
                 费项目(LZ2020002);沈阳市科学技术计划-重大关键核心技术攻关专项(20-202-1-15)
                 作者简介:刘艳吉(1995—),男,硕士生,E-mail:llyyjj3611@163.com。联系人:王   娜(1977—),女,教授,E-mail:iamwangna@sina.com。
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