氨基树脂透明防火涂料的发展概况

介绍了透明防火涂料的基本组成、类型、特点及其应用 ,概述了透明防火涂料的发展现状。     

Phenolic resins bearing maleimide groups: Synthesis and characterization

Novel phenolic novolac resins, bearing maleimide groups and capable of undergoing curing principally through the addition polymerization of these groups, were synthesized by the polymerization of a mixture of phenol and N‐(4‐hydroxy phenyl)maleimide (HPM) with formaldehyde in the presence of an acid catalyst. The polymerization conditions were optimized to get gel‐free resins. The resins were characterized by chemical, spectral, and thermal analyses. Differential scanning calorimetry and dynamic mechanical analysis revealed an unexpected two‐stage curing for these systems. Although the cure at around 275°C was attributable to the addition polymerization reaction of the maleimide groups, the exotherm at around 150 to 170°C was ascribed to the condensation reaction of the methylol groups formed in minor quantities on the phenyl ring of HPM. Polymerization studies of non‐hydroxy‐functional N‐phenyl maleimides revealed that the phenyl groups of these molecules were activated toward an electrophilic substitution reaction by the protonated methylol intermediates formed by the acid‐catalyzed reaction of phenol and formaldehyde. On a comparative scale, HPM was less reactive than phenol toward formaldehyde. The presence of the phenolic group on N‐phenyl maleimide was not needed for its copolymerization with phenol and formaldehyde. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 641–652, 2000     

对苯二酚改性聚二苯基硼硅氧烷的研究

应用熔融缩聚方法，用对苯二酚对硼硅氧烷聚合物进行改性，得到一种新型耐高温聚合物（ＰＢ）ＰＨ。并对其溶解性、热性能及其结构等作了详尽的论述。     

芳烷基酚树脂玻纤增强材料性能的研究

用芳烷基酚树脂与玻璃纤维布制成纤维增强材料，研究了引材料的高温热老化性能和在３０－５０％热沸太航热醋和含氯离子的热沸醋酸下的腐蚀性能。     

应用阳离子交换树脂催化水解蔗糖Ⅰ.蔗糖非均相催化水解反应动力学

实验选用两种H+型强酸性阳离子交换树脂为催化剂，研究蔗糖在离子交换树脂柱内的非均相催化反应动力学。结果表明，温度每升高10℃，蔗糖在两种离子交换树脂柱内的水解速度分别增加到2．1和3．3倍；蔗糖在两种离子交换树脂柱内水解反应的表观活化能分别为64．96kJ／mol和79．59kJ／mol，其水解反应有明显的扩散控制。     

红外光谱法测定环氧树脂的环氧值

介绍了用红外光谱法测定环氧树脂的原理、试验条件和允许差,以及该方法在环氧树脂及其预浸料质量控制方面的应用。     

含西佛碱键的多羟基树脂的合成及对硼酸的吸附性能

分别用亲水性的聚乙烯胺和疏水性的聚苯乙烯为载体，合成了一系列含不同长度间隔臂的多羟基螯合树脂，并讨论了树脂对硼酸的吸附、洗脱性能，结果表明树脂在中性、弱酸性条件下可较好地吸附硼酸；吸附速率与载体的亲水性和间隔壁长度有关；测定了吸附反应表观活化能以及吸附硼酸后可用０．５Ｎ盐酸洗脱。     

高效液相色谱法和凝胶色谱法对钨酚醛树脂的表征

应用高效液相色谱法（ＨＰＬＣ）和凝胶色谱法（ＧＰＣ）对不同合成阶段的钨酚醛树脂进行表征,以合成体系的极性和分子量的变化为依据,提出合成反应的重要控制阶段以及含钨化合物在合成反应中的行为。     

笼形聚偕氨肟树脂的研究：酸处理树脂的吸附性能

笼形聚偕氨肟树脂（ＣＡＯ）经盐酸处理垢，伯胺基转变成胺盐。酸处理笼形聚偕氨肟树脂（ＡＣＡＯ）对Ｍｇ＾２＋，Ｃａ＾２＋，Ｂａ＾２＋，Ｍｎ＾２＋，Ｃｏ＾２＋，Ｎｉ＾２＋离子不吸附；对Ｚｎ＾２＋，Ｃｄ＾２＋，Ｃｕ＾２＋，Ｐｂ＾２＋离子的吸附效率在２０％以下，但对Ｈｇ＾２＋离子的吸附效率则高达７１．２％；对一些金属络阴离子的吸附效率顺序是Ｆｅ（ＣＮ）＾２－６＞Ｃｒ２Ｏ＾２－７＞ＭｏＯ＾２－４＞ＰｔＣｌ＾２