摘要
结合一羟甲脲和二羟甲脲的比例，以及改善基体树脂与甲纤维素界面粘结两方面的考虑，本研究采用分批投放甲醛进行合成和使用苯甲酸二甘醇酯作甲纤维表面处理剂的方法，对氨基模塑料进行改性。结果表明：树脂液的稳定期在２４小时以上；与空白试样相比，改性后模塑料的抗弯强度提高２４．５％，抗冲韧性提高５０％。
We modified the aminoplastics by using diethylene glycol benzoate as a surfacing reagent for α-methyl celluloseic improve the interfacial adhesion with the resin and by batch fed of formaldehyde during the synthetic process to control the ratio of monomethylolurea to dimethylolurea. The results showed that the stable storage period was over 24h for the resin liquid, and flexural strength and impact strength of the modified resin were increased by 24% and 50% respectively, compared with the raw resin.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
1994年第6期158-162,共5页
Journal of South China University of Technology(Natural Science Edition)
关键词
氨基塑料
增韧剂
苯甲酸酯
二次投料
改性
s: aminoplastics, ureas, flexibilizers
diethylene glycol benzoate
