胶合板用低甲醛释放脲醛树脂胶的增强改性  

Preliminary Study on Improvement of Bond Strength of Low-FormaldehydeEmission Urea-Formaldehyde Resin for Plywood

作　　者：施晓宏 唐雨枫 沈云芳 戴雪枫 赵建忠 桂成胜 顾水祥 SHI Xiao-hong;TANG Yu-feng;SHEN Yun-fang;DAI Xue-feng;ZHAO Jian-zhong;GUI Cheng-sheng;GU Shui-xiang(Zhejiang Shenghua Yunfeng Greenco Co.,Ltd.,Deqing 313220,Zhejiang,China)

机构地区：[1]浙江升华云峰新材股份有限公司,浙江德清313220

出　　处：《木材科学与技术》2021年第2期59-62,共4页Chinese Journal of Wood Science and Technology

摘　　要：采用水性环氧树脂溶液(WES)、脱酚46棉籽蛋白(DCP-46)加入到低甲醛释放脲醛树脂(LF-UF)胶中进行增强改性研究。通过试验优选的配比,交联剂WES和增强剂DCP-46添加量均为LF-UF用量的15%时,制备胶合板的II类胶合强度和III类胶合强度分别比对照组提高了145.7%、103.3%,均满足GB/T 9846—2015《普通胶合板》中杨木II类胶合强度、III类胶合强度限值(≥0.70MPa)的要求,甲醛释放量(干燥器法)则基本保持不变,为0.2 mg/L,满足LY/T 2870—2017《绿色人造板及其制品技术要求》中甲醛释放量的限值(≤0.3 mg/L)要求。Waterborne epoxy resin solution(WES)and dephenol 46 cottonseed protein(DCP-46)were employed as reinforcing modifiers to improve the bond strength of low formaldehyde emission ureaformaldehyde resin(LF-UF).The results showed that when the dosage of WES and DCP-46 were at 15%of the LF-UF content,respectively,the bond strength of class II plywood and class III plywood were increased by 145.7%and 103.3%,which met the requirements of class II plywood and class III plywood of GB/T 9846—2015"Plywood for general use".The formaldehyde emission remained unchanged,at 0.2 mg/L,which met the requirements of LY/T 2870—2017"Technical requirements of green wood-based panel and its products".

关 键 词：胶合板 水性环氧树脂 低甲醛释放脲醛树脂 棉籽蛋白 胶合强度 

分 类 号：TS653.3[轻工技术与工程] TQ433.43[化学工程]