β-胺化乙基氨基聚酯树脂的合成与应用

THE SYNTHESIS AND APPLICATION OF POLYESTER RESIN WITH β-AM INOETHYLAMINO GROUPS

减压下,顺丁烯二酸酐(顺酐)与二元醇通过缩聚反应制得含有一定数目碳碳双键的不饱和聚酯(酸值=30±5).不饱和聚酯与乙二胺下角料(多乙烯多胺)在常压下,于50～80℃时发生加成反应可制得碱性聚酯,然后用冰乙酸中和至 pH≈6,得到一种棕红色粘稠状透明的水溶性液体——β-胺化乙基氨基聚酯树脂(以下称"AR—1树脂"),其粘度稍大于 SR—1树脂,水溶性与热稳定性与 SR—1树脂基本相同.用AR—1树脂代替高价的 SR—1树脂分别与固色剂 Y 和玻璃润滑剂复配成不同浸润剂后进行玻璃纤维的成型加工、增强材料等实验,结果表明:使用 AR—1树脂复配成浸润剂所制得的玻璃纤维的主要性能指标均达到或超过了 SR—1树脂,尤其与玻璃润滑剂复配时,效果尤为显著;此外,AR—1树脂复配工艺简单,可谓 SR—1树脂的较为理想的代用品.

Unsaterated polyester resin,by reducing pressure,can be prepared by means of the con- densation polymerization between maleic anhydride and dihydrie alcohols.This resin contain- ing the right carbon-carbon double bond with which polyethylene polyamine(i.e.the leftover bits and pieces of ethyldiamine)and to neutralize with CH_3COOH enable pH≈6 can convert into a slow-moving transparent brown-red and water-soluble liquid resin (signed as'AR—1 resin')at normal pressure and 50～80℃.The experiment of the forming process and reinfor- cing materials of glass fibre is done when infiltrants made up from the complex of the AR—1 resin instead of SR—1 resin and fixing agenty or glass lubricant is used,and the result as in- dicated above is satisfactory.