聚合物改性水泥砂浆用于木材粘结的可行性分析

Feasibility Analysis of Polymer Modified Cement Mortar for Wood Bonding

采用化学胶粉5010N、5518H、8620E、脲醛树脂和植物胶粉对水泥砂浆进行改性,并利用PVA对之进行增强,尝试将聚合物改性砂浆应用于木材粘结。结果表明,仅当使用5010N胶粉时,砂浆与实木板或三合板的拉伸粘结强度较高,但仍不宜与刨花板粘结,且不适合在浸水或高温环境下使用。适当添加聚乙烯醇粉末能使拉伸粘结强度有所提高。

The cement mortar is modified with chemical powders 5010N,5518H,8620E,urea-formaldehyde resin and natural plant powder,and then reinforced with PVA.The polymer-modified cement mortar is applied to wood bonding.The results show that,only when 5010N powder is used,the tensile and bonding strength of cement mortar with solid wood board or plywood is relative high,but it is still not applicable for bonding with particleboard or for use in water immersion or high temperature environment.Appropriate addition of polyvinyl alcohol powder can improve the tensile and bonding strength.