兼具高湿强度及长开放期EPI木材胶粘剂的制备与性能表征  

Preparation and performance characterization of EPI wood adhesive with high wet strength and long opening period

作　　者：余桂勋 黄鹤[1] Yu Guixun;Huang He(College of Chemistry,Chemical Engineering and Materials Science of Soochow University,State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials,Suzhou 215123,Jiangsu,China)

机构地区：[1]苏州大学材料与化学化工学部,先进功能高分子材料国家地方联合工程实验室,江苏苏州215123

出　　处：《中国胶粘剂》2024年第4期41-46,共6页China Adhesives

摘　　要：首先分别制备了湿强度优异(6.4 MPa)但开放期较短(40 min),以及开放期较长(145 min)但湿强度偏低(3.8 MPa)的EPI木材胶粘剂用两款乳液(SAEP3和SAEP4),然后探索了两种乳液的配比对复合乳液胶粘剂性能的影响。研究结果表明:当两款乳液用量一样时,产生了协同效应,制得的乳液(SAEP5)胶粘剂开放期为100~120 min,湿强度达6.4 MPa。与同样条件下测试的市售SL6517胶粘剂相比,其开放期相当,湿强度高出SL6517胶粘剂(均值5.1 MPa)约25%。由此,成功制备兼具高湿强度及长开放期的EPI木材胶粘剂。First,two emulsions(SAEP3 and SAEP4) for EPI wood adhesive,i.e.one with excellent wet strength(6.4 MPa) but short opening period(40 min),the other with long opening period(145 min) but low wet strength(3.8 MPa),were prepared respectively.Then the effect of the ratio of two emulsions on the properties of composite emulsion adhesive was explored.The research results showed that,when the amount of two emulsions was the same,the synergistic effect was achieved.The opening period of the prepared emulsion(SAEP5) adhesive was 100-120 min,and the wet strength reached 6.4 MPa.Compared with the commercially available SL6517 adhesive tested under the same conditions,its opening period was equivalent,and its wet strength was about 25% higher than that of SL6517 adhesive(average 5.1 MPa).As a result,EPI wood adhesive with high wet strength and long opening period was successfully prepared.

关 键 词：木材胶粘剂 苯丙乳液 湿强度 开放期 复合乳液 

分 类 号：TQ436.5[化学工程]