膨胀阻燃剂及OMMT的分布对PBS/TPU共混物阻燃性能的影响  

Influence of Location of Intumescent Flame Retardant and OMMT on Flame Retardancy of PBS/TPU Blends

作　　者：高喜平 张兴刚 张帅[2] 朱文博 姚大虎 陆昶 GAO Xiping;ZHANG Xinggang;ZHANG Shuai;ZHU Wenbo;YAO Dahu;LU Chang(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;School of Chemistry and Chemical Engineering,Henan University of Science and Technology,Luoyang 471023,China;Luoyang Sunrui Rubber&Plastic Science and Technology Co.,Ltd,Luoyang 471003,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南科技大学化学化工学院,河南洛阳471023 [3]洛阳双瑞橡塑科技有限公司,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2023年第4期99-104,I0007,共7页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(51673059);河南省科技攻关项目(212102210636);高端轴承摩擦学技术与应用国家地方联合工程实验室开放基金项目(201813);河南科技大学SRTP项目(2022182);河南科技大学博士启动基金项目(13480052)。

摘　　要：以聚磷酸铵(APP)和季戊四醇(PER)为原料组成的膨胀阻燃剂(IFR)为主阻燃剂,以有机蒙脱土(OMMT)为协效阻燃剂,以热塑性聚氨酯弹性体(TPU)为聚合物成炭剂,采用熔融共混法对聚丁二酸丁二醇酯(PBS)进行阻燃改性,并考察了IFR及OMMT的分布对PBS/TPU共混物阻燃性能的影响。通过极限氧指数(LOI)、垂直燃烧、热重分析、熔体黏度分析和扫描电子显微镜(SEM)对PBS/TPU/IFR/OMMT阻燃复合材料进行了测试与表征。结果表明:OMMT与IFR有着良好的协同阻燃效应,在OMMT质量分数为1%时,就可提高PBS/TPU/IFR共混物的阻燃效果。IFR与OMMT的分布对PBS/TPU/IFR/OMMT共混物的阻燃性能有着显著的影响。当IFR与OMMT均直接分布于PBS相时,共混物的阻燃性能最优,LOI为32.7%,垂直燃烧达到UL 94 V-0级,明显优于阻燃剂为其他3种分布体系的。Using intumescent flame retardant(IFR)composed of ammonium polyphosphate(APP)and pentaerythritol(PER)as the main flame retardant,the organic montmorillonite(OMMT)as the synergistic flame retardant,and the thermoplastic polyurethane elastomer(TPU)as the polymer charring agent,the flame retardant modification of polybutylene succinate(PBS)was carried out by melt blending.The effect of the distribution of IFR and OMMT on the flame retardancy of PBS/TPU blends was investigated.The PBS/TPU/IFR/OMMT flame retardant composites were tested and characterized by limiting oxygen index(LOI),vertical combustion,thermogravimetric analysis,melt viscosity analysis and scanning electron microscopy(SEM).The results show that OMMT and IFR has a good synergistic flame retardant effect.The flame retardant effect of PBS/TPU/IFR blends can be improved when the mass fraction of OMMT is 1%.The distribution position of IFR and OMMT has a significant impact on the flame retardance of PBS/TPU/IFR/OMMT blends.When IFR and OMMT are directly distributed in PBS phase,the flame retardancy of the blend is the best.LOI is 32.7%and the vertical combustion reaches UL 94 V-0 level,which is significantly better than that of the flame retardancy for the other three distribution systems.

关 键 词：聚丁二酸丁二醇酯 热塑性聚氨酯弹性体 膨胀阻燃剂 OMMT 阻燃性能 

分 类 号：TB324[一般工业技术—材料科学与工程]