摘要
由酚酞和4,4′-二氯二苯酮经亲核缩聚制得了一系列不同分子量的含—OK端基的聚醚酮低聚物,将其与环氧氯丙烷反应得到了分子量为1000～8000的含环氧端基聚芳醚酮（E-PEK）。用IR和<sup>1</sup>H NMR表征了E-PEK的分子链结构,测定了T<sub>g</sub>、溶解性和熔融粘度。研究了E-PEK/DDE体系的固化,固化后树脂的T<sub>g∞</sub>=183～215℃,与低聚物的初始分子量有关。
Epoxy-terminated phenolphthalein polyaryletherketones (E-PEK) of M_n=1000～8000 were synthesized by reaction of epichhlorohydrin with PEK oligomer having—OK terminal groups prepared by condensation of phenolphthalein (PPH) with 4,4'-dichlorobenzophenone (DCBP) at molar ratios of PPH to DCBP from 1:0. 5 to 1:0. 9. The E-PEKs were characterized by IR and ~1H NMR spectra,initial glass transtion temperature (T_(gi)); the melting viscosity and solubility of E-PEK samples were also measured. The E-PEKs were cured with 4, 4'-diaminodiphenylether (DDE) and the glass transition temperatures of the fully erosslinked E-PEK/DDE (T_(g∞)) were found to be in relation with the initial molecular weight of the oligomer. The T_(g∞) values for all samples closslinked were in the range of 183～215℃.
出处
《应用化学》
CAS
CSCD
北大核心
1993年第1期39-42,共4页
Chinese Journal of Applied Chemistry
关键词
环氧端基
齐聚物
酚酞
聚芳醚酮
epoxy-terminated oligomer, phenolphthalein, polyaryletherketone, synthesis
