摘要
以实验室自制的硫化锂与对二氯苯为原料,无需添加其他任何催化剂,在N-甲基吡咯烷酮中直接进行缩聚反应,合成了聚苯硫醚树脂。研究了聚合体系中含水量和单体的配比对聚合反应的影响,通过高温灼烧测定了树脂的灰分,并与传统硫化钠法合成出来的聚苯硫醚树脂的灰分进行了比较分析。采用红外和元素分析对合成产品进行了表征。用TG和DTA对树脂的熔点Tm和初始热失重Td进行了测定。结果表明:合成的树脂为线性高分子聚苯硫醚树脂,具有较低的灰分和良好的热性能。
Using p-dichlorobenzene and lithium sulfide as raw materials,the crystal linear PPS with high molecular weight was synthesis without catalyst in 1-Methyl-2-pyrrolidinone. The effects of the dehydration of the system and precur sot molar ratio on polymerization were studied. The ash content of the title PPS were measured by the method of high-tem- perature burning and compared with the ash content of traditional PPS synthesized with sodium sulfide. The chain structure was investigated by Fourier transform infrared FT-IR spectroscopy and elemental analysis. Thermal properties were exam- ined by TG and DTA. The results showed that the synthetic resin was linear PPS with high molecular weight,and had low ash content and good heat stability.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第12期50-52,共3页
New Chemical Materials
关键词
硫化氢
硫化锂
聚苯硫醚
合成
hydrogen sulfide, lithium sulfide, PPS, synthesis