抗热氧化PPS复合材料的制备及性能研究  

Preparation and Properties of PPS Composites with Anti Thermal Oxidation Resistance

作　　者：张勇 张蕊萍[1] 黄玉莲[1] 戴晋明[1] 连丹丹[1] 

机构地区：[1]太原理工大学轻纺工程学院,山西晋中030600

出　　处：《工程塑料应用》2014年第6期22-25,共4页Engineering Plastics Application

基　　金：山西省回国留学人员科研资助项目(2010-044);山西省自然科学(青年)基金项目(2012020021-6);太原理工大学青年基金项目(2012L027)

摘　　要：针对聚苯硫醚(PPS)在高温工况下极易氧化的问题,在制备过程中,添加一种耐高温抗氧剂KYN–818,利用双螺杆挤出机制备抗热氧化PPS复合材料,采用傅立叶变换红外光谱仪、差示扫描量热仪和微机控制电子万能拉力试验机分别研究了PPS复合材料的结构、热性能、氧化诱导温度和力学性能。结果表明,在PPS复合材料谱线中,KYN–818与PPS之间没有形成新的官能团;当KYN–818质量分数为0.3%时,PPS复合材料的氧化诱导温度较纯PPS提高10℃;KYN–818起到增塑剂和异相成核剂的作用,使PPS复合材料的玻璃化转变温度降低5℃左右,降温结晶温度向高温方向移动;KYN–818的添加,没有削弱PPS复合材料的拉伸断裂强度,但使其断裂伸长率略有降低。Aiming at poly（phenylene sulfide）（PPS） easily oxidized at high temperature condition, PPS composites with thermal oxidation resistance were prepared using the twin screw extruder, adding a high temperature antioxidant KYN-818 during the manufacturing process. The structure, thermal properties, oxidation induction temperature and the mechanical properties of the composits were studied using FTIR, DSC and computer-controlled electronic universal testing machine respectively. The results show that the new functional groups is not formed between KYN-818 and PPS in the spectral line of the composites. The mass fraction of antioxidant KYN-818 is 0.3%, the oxidation induction temperature of the composites than pure PPS raises 10 ~C. KYN- 818 plays the role of the plasticizer and heterogeneous nucleation agent, so that the glass transition temperature of the composites reduces about 5 ~C and cooling crystallization temperature moves to higher temperature. Adding of KYN-818, does not impair the tensile strength of the composites, just making the elongation at break decreased slightly.

关 键 词：聚苯硫醚 抗氧剂 热性能 氧化诱导温度 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]