防白蚁剂对三聚氰胺甲醛树脂胶粘剂性能的影响

目的研究加入防白蚁剂对胶粘剂的影响。方法测试了联苯菊酯、溴氰菊酯、高效氯氰菊酯等3种拟除虫菊酯类防白蚁剂对三聚氰胺甲醛树脂黏度、pH值、固化时间、润湿性及胶合性能的影响。采用模拟固化法,测试了三聚氰胺甲醛加入防白蚁剂前后的红外光谱特征。结果防白蚁剂的加入降低了三聚氰胺甲醛树脂的pH值,提高和延长了三聚氰胺甲醛树脂的黏度和固化时间,提高了三聚氰胺甲醛树脂在杨木单板上的润湿性,降低了胶层剪切强度;联苯菊酯、溴氰菊酯和高效氯氰菊酯等3种防白蚁剂的加入没有引起三聚氰胺甲醛树脂红外特征峰的改变。结论联苯菊酯、溴氰菊酯和高效氯氰菊酯一定程度上影响三聚氰胺甲醛树脂的常规特性;由于防白蚁剂中水份和原药微粒的影响,三聚氰胺甲醛树脂的胶层剪切强度有所下降;联苯菊酯、溴氰菊酯和高效氯氰菊酯对三聚氰胺甲醛树脂化学基团没有影响。

Influence of Anti-termite Agent on Performance of Melamine-formaldehyde Resin

Objective To study the effect of addition of anti-termite agent on adhesives. Methods In this article, we tested the impacts of anti-termite agents bifentrin, deltamentrin and beta-cypermethrin, on the viscosity, pH, curing time, panel surface property and gluing properties of melamine formaldehyde resin. Using the solidification simulation method, we tested the IR absorption spectra of the melamine formaldehyde resin before and after the addition of anti-termite agent. Results The results showed that the pH of melamine-formaldehyde resin was reduced while the viscosity and curing time of melamine-formaldehyde resin were increased and the panel surface property was improved by the addition of anti-termite agent. However ,the bond strength of melamine-formaldehyde resin was declined. Infrared spectrum analysis showed that the characteristic peak of melamine-formaldehyde resin was not influenced by the addition of anti-termite agents. Conclusion Bifentrin, deltamentrin and beta-cypermethrin affected the general characteristics of melamine-formaldehyde resin. There was an adverse effect on shear bong strength of melamine-formaldehyde resin due to the moisture and original drug fine particles. The chemical groups of melamine formaldehyde resin were not influenced by bifentrin, deltamentrin and beta-cypermethrin.