木结构工程材用间苯二酚甲醛树脂胶粘剂的研究  

Study of resorcinol-phenol-formaldehyde resin adhesive for wood structure engineering materials

作　　者：柳婷[1] 吴姝云 吴志平[1] 谢力生[1] 李贤军[1] 覃族[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《热固性树脂》2015年第6期33-37,共5页Thermosetting Resin

基　　金：国家林业公益性行业科研重大专项(201304504);湖南省高校创新平台开放基金(13k072)资助

摘　　要：通过力学性能测试,红外光谱分析和电镜分析研究了木结构工程材用间苯二酚甲醛树脂胶粘剂的制备工艺,探讨了原料配比,反应温度和时间等对胶粘剂性能的影响。结果表明,间苯二酚-苯酚-甲醛树脂的最佳合成条件为:间苯二酚与苯酚物质的量比为1:(3-7);苯酚与甲醛物质的量比1:1.5;反应体系p H值10.0,预反应温度90℃,共反应温度65℃,共反应时间1 h。该树脂可采用15%多聚甲醛(基于树脂质量)室温固化,固化物干剪切强度为13.0~14.0 MPa,湿剪切强度为6.5~8.0 MPa,满足国家标准GB/T 50708—2012要求。The preparation process of resorcinol-phenol-formaldehyde resin adhesive for wood structural engineering materials was investigated by mechanical tests,infrared spectroscopy and electron microscopy analysis. The effects of raw material ratio,reaction temperature and time on the adhesive properties were discussed. The results showed that the optimal synthesis conditions of resorcinol- phenol- formaldehyde resin were as followed:molar ratio of resorcinol to phenol 1:(3-7),molar ratio of phenol to formaldehyde 1:1.5,p H value of reaction system 10.0,pre-reaction temperature 90 ℃,co-reaction temperature 65 ℃ and co-reaction time 1 h. The resin could be cured with 15% paraformaldehyde(based on the resin quality)at room temperature. The dry shear strength and wet shear strength of cured product were 13.0-14.0 MPa and 6.5-8.0 MPa,respectively and met the national standard GB/T 50708—2012requirements.

关 键 词：间苯二酚-苯酚-甲醛树脂 合成 室温固化 胶粘剂 剪切强度 木结构工程材料 

分 类 号：TU58[建筑科学—建筑技术科学]