有机-无机复合抗氧剂对聚苯硫醚结构与性能的影响  

Effect of organic⁃inorganic compound antioxidant on structure and properties of polyphenylene sulfide

作　　者：李荣南 殷茂力 刘峰 胡承功 邢剑 LI Rongnan;YIN Maoli;LIU Feng;HU Chenggong;XING Jian(School of Textile and Garment,Anhui Polytechnic University,Wuhu 241000,China)

机构地区：[1]安徽工程大学纺织服装学院,安徽芜湖241000

出　　处：《中国塑料》2025年第1期75-79,共5页China Plastics

基　　金：国家自然科学基金(52203114)。

摘　　要：通过化学接枝法将高温抗氧剂(GA-80)引入氧化石墨片层,制备有机-无机复合抗氧化剂(GO-sHP),再利用微型双螺杆挤出机将复合抗氧剂GO-sHP与聚苯硫醚(PPS)熔融共混复合,并对其结构与性能进行表征。结果表明,复合抗氧剂GO-sHP表现出较高的热稳定性,可适用与PPS熔融复合;GO-sHP与PPS基体中存在较好的相容性,可在基体中均匀分散无明显团聚;GO-sHP的引入可促进PPS结晶提高结晶度,随着GO-sHP含量的增加,结晶温度呈现增加的趋势,过冷度则呈现下降的趋势;GO-sHP的引入可提高PPS基体的热稳定性,耐热温度指数随着GO-sHP含量的增加而升高;GA-80的添加可显著提升PPS基体的拉伸断裂强度,经热氧化处理后,纯PPS的拉伸强度下降4.1%,当复合抗氧剂的含量为0.3%时,拉伸断裂强度仅下降2.4%。An organic‐inorganic compound antioxidant(GO‐sHP)was prepared through chemical grafting of GA‐80 into graphite oxide(GO)sheets.The resultant GO‐sHP was melt‐blended with polyphenylene sulfide(PPS)by using a mi‐cro‐twin‐screw extruder.The structure and properties of the obtained PPS blends were intensively analyzed.The results indicate that GO‐sHP showed high thermal stability and could well be melt‐blended with PPS.GO‐sHP exhibited good compatibility with the PPS matrix and could be uniformly dispersed in the matrix without any agglomerations.The intro‐duction of GO‐sHP could promote the crystallization of PPS to improve its crystallinity.As the GO‐sHP content in‐creased,the crystallization temperature of PPS increased and its supercooling degree decreased.The introduction of GO‐sHP improved the thermal stability of PPS,and its heat resistance temperature index increased with an increase in the GO‐sHP content.The addition of GA‐80 improved the tensile fracture strength of PPS significantly.After thermal oxidation treatment,pure PPS presented a decrease in the tensile fracture strength by 4.1%.However,the PPS blend containing 0.3 wt%GO‐sHP showed a decrease in the tensile fracture strength only by 2.4%.

关 键 词：聚苯硫醚 氧化石墨 有机-无机复合抗氧化剂 结晶性能 抗氧化性 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]