不同添加剂对聚丁二酸丁二醇酯阻燃性能的影响  

Effect of Different Additives on Flame Retardancy of Poly(Butylene Succinate)

作　　者：郝绍菊[1] HAO Shao-ju(Architectural Engineering Institute,Henan Radio&Television University,Zhengzhou 450008,China)

机构地区：[1]河南广播电视大学建筑工程学院,河南郑州450008

出　　处：《塑料科技》2020年第12期11-14,共4页Plastics Science and Technology

摘　　要：聚丁二酸丁二醇酯(PBS)是一种可完全生物降解高分子材料,但PBS易燃烧,且热解过程伴随严重的滴熔现象,制约了其进一步的开发和应用。采用3种添加剂:DOPO-HQ、AHP和自制改性高岭土K-U,将不同浓度的添加剂以熔融共混的方式与纯PBS混合制备复合阻燃材料。对比实验发现,3种添加剂均能有效提升复合材料的LOI和UL-94阻燃级别,且改善滴熔现象,当K-U达到10%时,已无滴熔现象发生。TG实验表明,添加剂的加入对PBS材料的热稳定性无明显影响。将LOI测试后的炭层进行分析发现,3种添加剂特别是DOPO-HQ和K-U的添加能促使PBS复合材料形成连续致密的炭层,从而有效阻止基材与空气的接触和热量传递,增强材料的阻燃性能。K-U的添加可以有效降低材料的结晶速率,提高其结晶度,随着温度升高至700℃,复合材料逐渐转变为由C/P/N元素所组成的残炭。Poly(butylene succinate)(PBS)is a biodegradable polymer that can be fully extracted from renewable resources.However,PBS has serious dripping problems during combustion due to its flammability,which has restricted its development and application.Three kinds of additives:DOPO-HQ,AHP and self-made modified kaolinite K-U were used as additives,different concentrations of flame retardant were added into pure PBS by melt blending to prepare flame retardant composites in this paper.The results show that the three additives can effectively improve the LOI and UL-94 flame retardant level of the composites,and the dripping problems are obviously alleviated.When the mass fraction of K-U reaches 10%,no dripping problems occur.TG experiments show that the additives have no obvious effect on the thermal stability of PBS.The carbon layer after LOI test was analyzed.It is found that three kinds of additives,especially DOPOHQ and K-U can significantly promote the formation of continuous and dense carbon layer of PBS composites,which can effectively enhance the flame retardancy of the materials by preventing heat transfer between the substrate and the air.The addition of K-U can reduce the crystallization rate and increase the crystallinity of the material.With the temperature rising to 700℃,the composites are gradually transformed in to residual carbon composed of C/P/N elements.

关 键 词：聚丁二酸丁二醇酯 改性高岭土 阻燃性能 含磷添加剂 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ323.41[化学工程—合成树脂塑料工业]