【摘要】 采用凹凸棒土改性脲醛树脂胶粘剂,研究了凹土添加量和热活化温度对树脂甲醛释放量和胶结强度的影响。结果表明:凹土添加量在10%~15%时,树脂甲醛释放量降低了约22.1%,且胶合强度下降不大;热活化温度控制在150~250℃,甲醛释放量至少降低了23%,胶合强度接近面粉填料树脂。更多还原

【Abstract】 Attapulgite was used to modify the urea-formaldehyde adhesive.The effects of added amount and heat activate temperature on the formaldehyde emission content and bending strength were studied.The results showed that when the added amount of attapulgite was 10%~15% by weight of urea-formaldehyde resin,the formaldehyde emission content decreased by 22.1%,and the bending strength decreased a little.When the heat activation was controlled between the 150-250℃ temperature range,the formaldehyde emission content at least decreased by 23%,and the bending strength approached to the resin filled with flour.更多还原