新推拉型电光聚合物中间体的二阶NLO性质的分子设计研究

在能量梯度法 (AM1 )和间略微分重叠 (ZINDO)方法基础上 ,按完全态求和 (SOS)公式编制了计算分子二阶非线性光学 (NLO)系数 βijk,βμ 的程序 ,研究了一系列新推拉型二环分子的结构、光谱和二阶非线性光学系数 β( - 2ω ,ω ,ω) ,β(ω ,ω ,ω) .考察了分子骨架 ,给、受电子取代基对 βμ 的影响及β与外场频率的关系 (即色散关系 ) .最后设计了最大 βμ 的电光聚合物中间体 .

一种无机有机聚合物中间体——六(甲基丙烯酸羟乙酯)三聚膦腈的合成

Hexa(2-hydroxyethyl methacrylate)cyclotriphosphazene(HHMP) was synthesized from 2-hydroxyethyl methacrylate and hexachlorocyclotriphosphazene through nucleophilic substitution reaction in the presence of cuprous chloride as a catalyst. Raman, FTIR and NMR techniques were used to characterize and confirm the structure of the product compound.

聚四甲撑醚二醇——极具发展前途的聚合物中间体

目前世界聚四甲撑醚二醇的生产能力为28.2万t/a且供应一直紧张。每年需求量以百分之十几的 速度增长,而我国生产能力仅为0.25万t/a,规模较小。本文介绍了PTMEG的合成方法、应用、催化体 系以及生产与市场等。PTMEG主要用于合成聚氨酯,具有耐低温、耐水解、耐盐水、耐霉菌等性能,故应 用广泛。作者认为聚四甲撑醚二醇的市场需求会越来越大,具有独特而广阔的发展前景。

高附着力醇酸涂料的研制

合成了一种聚合物中间体Z809,再以此聚合物中间体Z809及其他原料制备高附着力醇酸树脂,以该醇酸树脂配成的醇酸涂料附着力、硬度、防锈能力等均得到提高。研究了影响聚合物中间体、高附着力醇酸树脂及其涂料制备的因素。

CHARACTERIZATION OF NOVEL POLYMERIC INTERMEDIATE POLY(p-BROMOACETYL STYRENE) CROSSLINKED BY DIVINYLBEZENE QU Rongjun

Acetyl crosslinked polystyrene (EPS) and crosslinked bromoacetyl polystyrene (BEPS)beads were synthesized by Fridel-Crafts acetylation of polystyrene (PS) and bromination of EPS respectively. FTIR, XPS, and TG-TDG were employed to characterize their structures. The results revealed there are two types of bromine in the BEPS molecule. One is in the main chain of polystyrene and the other is in the acetyl. The results of TG-DTG showed that the rates of loss weight of PS, EPS, and BEPS were 92.7%, 92.2%, and 81.3% among the 300 ℃～500 ℃; 7.3%, 7.8%, and 18. 7% in 594 ℃, 660 ℃, and 584.8 ℃, respectively.