摘要
聚苯硫醚(PPS)是一种新型的特种工程塑料。在催化剂Na2CO3的作用下,用对二氯苯(p-DCB)和脱水后的硫化钠在N-甲基吡咯烷酮(NMP)溶剂中常压合成聚苯硫醚。实验中主要研究了硫化钠脱水率、反应温度、原料摩尔比和反应时间对该反应的影响,并提出了可能的缩聚反应机理。结果表明:合成反应条件是最佳反应温度为(195±5)℃,最佳n(Na2S)∶n(p-DCB)=1.1∶1,最佳反应时间为10 h,硫化钠脱水率在70%以上即可得到白色产品,采用的红外光谱、拉曼光谱、热失重及X-粉末衍射等现代仪器分析方法表征了其结构。
Polyphenylene Sulfide（PPS） is a new kind of special engineering plastic. PPS resin is synthesized under the normal pressure condition with the dried sodium sulfide, p-dichlorobenzene（p- DCB）, N-methyl pyrrolidinone（NMP） solvent, and catalyst sodium carbonate. The thesis mainly studies the influences of Na2S ~ 9H20 dehydration, reaction temperature, raw materials ratio and reaction time, also speculates on the polycondensation reaction principle. The results show that the optimal synthesis process is reaction temperature （195± 5） ℃, reaction time 10h, raw materials ratio 1. 1 = 1 and when the dehydration ratio exceed 70%, white appearance product will be got. Besides, the structures have been studied by IR spectrum, Raman spectrum, thermal analysis and X-ray diffraction spectrum.
出处
《化工科技》
CAS
2007年第6期9-14,共6页
Science & Technology in Chemical Industry
基金
甘肃省自然科学基金资助项目(3ZS062-B25-027)
