间苯二酚对改性低毒脲醛树脂胶粘剂性能的影响  

Influences of resorcin on properties of modified UF adhesive with lower toxicity

作　　者：俞丽珍[1] 龚颖[1] 刘璇[1] 周健[1] 

机构地区：[1]常熟理工学院化学与材料工程学院,江苏省新型功能材料重点建设实验室,江苏常熟215500

出　　处：《中国胶粘剂》2012年第11期43-46,共4页China Adhesives

摘　　要：以间苯二酚作为改性剂,采用正交试验法探讨了最终甲醛/尿素(F/U)配比、酸性阶段pH和间苯二酚加入量对UF(脲醛树脂)胶粘剂的游离甲醛含量和胶接强度的影响。结果表明:当最终n(F)∶n(U)=1.3∶1、w(间苯二酚)=3%(相对于尿素总质量而言)和酸性阶段pH为5.0时,UF胶粘剂的游离甲醛含量降至0.30%、胶接强度为2.64 MPa且耐水性显著提高。With resorcin as modifier,the influences of final molar ratio of n（formaldehyde or F）：n（urea or U）,pH in acidic stage and resorcin contents on free formaldehyde content and bonding strength of UF（urea-formaldehyde resin） adhesive were discussed by orthogonal experiment. The results showed that the free formaldehyde content was dropped to 0.30%, bonding strength was 2.64 MPa,and the water-resistance was observably increased for UF adhesive when final molar ratio of n（F）：n（U） was 1.3：1 ,mass fraction of resorcin was 3% in total urea, and pH in acidic stage was 5.0.

关 键 词：脲醛树脂 间苯二酚 正交试验 胶接强度 游离甲醛含量 

分 类 号：TQ433.431[化学工程]