【摘要】 采用多元胺对间苯二酚-双酚A环氧树脂进行改性,制得了一种无甲醛、不发烟、低游离间苯二酚含量的树脂产物。以游离间苯二酚含量为指标,考察了间苯二酚与环氧树脂摩尔比、多元胺用量、催化剂用量、反应温度及时间对合成的影响。结果表明,在n(间苯二酚):n(环氧树脂)=1．3:1,多元胺用量10．0 g,催化剂用量0．8 g,反应温度180℃,反应时间2 h的条件下,所得的树脂性能较好,其游离间苯二酚含量为0．83％,软化点在95～105℃,钢丝抽出力高达429 N。红外光谱分析显示,多元胺以氢键连接的方式较好地结合在固化物体系中。更多还原

【Abstract】 A new resin product with non - formaldehyde, non - smoking, and low content of free resorcinol was prepared using a polyamine as modifying agent to modify resorcinol - bisphenol A epoxy resin. The effects of reaction conditions on the curing reaction were investigated with free resorcinol content as study object. The resin product with good properties was obtained under the following conditions: n(resorcinol) : n(epoxy) = 1.3:1, amount of polyamine and catalyst 10.0 g and 0.8 g respectively, reaction temperature 180℃, cure time 2.0 h. The modified resin showed that free resorcinol content was 0.83% , softening points was 95-105℃, and steel pull - out force was as high as 429 N. The IR spectra showed that polyamine well bonded to the resin via hydrogen bond.更多还原