摘要
为了解决阻燃板与木皮粘接不牢的问题,通过分析阻燃板的表面形貌和界面特征,提出了一种新型聚丙烯酸酯胶粘剂的解决方案。通过由自由基聚合合成得到的带有羟基的聚丙烯酸酯预聚物与异氰酸酯固化剂复配,得到双组分聚氨酯型胶粘剂,通过配方调试,使该胶粘剂在杨木木皮饰面与阻燃板之间形成良好的粘接效果,并通过间接法(剪切强度)和直接法(木皮残留率)2种方法进行评价。研究结果表明:所合成的丙烯酸酯预聚物的玻璃化转变温度(Tg)在20℃、羟值为25 mgKOH/g,主固比为5∶1、纳米钙填料用量为30%时,粘接效果最佳,其剪切强度可以达到3.10 MPa,木皮残留率为85%。
In order to solve the problem of poor bonding between flame retardant plate and thin wood veneer,a new solution of preparing polyacrylate adhesive was presented after analysis of flame retardant surface morphology and characteristics.A two-component polyurethane-type adhesive was prepared by mixing?isocyanate curing agent and polyacrylate oligomer?with hydroxy group which was synthesized by free radical polymerization,followed by formula optimization,the adhesive reached a good bonding effect between the poplar wood veneer and the flame retardant plate and the bonding strength was evaluated by indirect method(shear strength)and direct method(wood veneer residue rate),respectively.The results showed that when the glass transition temperature(Tg)of the synthesized polyacrylate oligomer was 20℃,the hydroxyl value of the synthesized polyacrylate oligomer was 25 mg KOH/g,the ratio of the main agent and the curing agent was 5∶1,and the amount of nano calcium carbonate filler was 30%,the best bonding effect was achieved,with 3.10 MPa shear strength?and 85%wood veneer residue rate.
作者
张伟
周健
次立杰
苏翠伟
胡江浦
陈石
王康
许炳琨
Zhang Wei;Zhou Jian;Ci Lijie;Su Cuiwei;Hu Jiangpu;Chen Shi;Wang Kang;Xu Bingkun(Shijiazhuang Changhong Construction Decoration Engineering Corporation Ltd.,Shijiazhuang 050051,China;Shijiazhuang University,Shijiazhuang 050035,China)
出处
《煤炭与化工》
CAS
2023年第7期122-126,130,共6页
Coal and Chemical Industry
关键词
阻燃板
薄木饰面
聚丙烯酸酯
胶粘剂
粘接强度
flame retardant plate
thin wood veneer
polyacrylate
adhesive
bonding strength
