环氧大豆油增韧酚醛树脂/蒙脱土复合材料力学性能研究  

Mechanical Properties of ESO-toughened-phenolic Resin/MMT Nanocomposites

作　　者：胡剑峰[1] 司徒粤[1] 徐丽[1] 陈焕钦[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《中国塑料》2008年第12期38-43,共6页China Plastics

基　　金：广东省关键领域重点突破项目(20050106)

摘　　要：采用环氧大豆油(ESO)和有机蒙脱土复合改性酚醛树脂以提高其力学性能。ESO可通过醚键接枝在酚醛树脂上,向树脂中引入柔性长链来提高树脂韧性;蒙脱土可通过聚合插层,在树脂中形成"网-点"结构,从而大幅提高材料的力学性能。研究结果表明,ESO的加入量为40%(质量分数,下同)时,能使酚醛树脂的冲击强度提高72%,弯曲强度可达到94MPa,断裂伸长率为4.5%。在此基础上,有机蒙脱土的加入量为2%时,材料的冲击强度可提高42.2%,弯曲强度为111MPa,断裂伸长率为5.6%,拉伸强度为30.8MPa。综合比较,加入40%的ESO,2%的有机蒙脱土对材料力学性能改善效果最佳。Phenolic resin was modified with epoxidized soybean oil （ESO） and organic-montmorillonite （OMMT） in order to improve its mechanical properties. The grafting of phenolic resin with ESO via etherification resulted in toughening, and the mechanical properties of modified phenolic resin was further enhanced with inorganic nanoparticles. After adding 40 wt % ESO, the impact strength of the phenolic resin was increased by 72 %, bending strength and elongation at break reached 94 MPa and 4.5 %, respectively. By introducing 2 wt% OMMT into the ESO toughened phenolic resin, the impact strength increased by 42.2 %, bending strength, tensile strength, and elongation at break reached 111 MPa, 30.8 MPa, and 40 %, respectively.

关 键 词：酚醛树脂 环氧大豆油 蒙脱土 增韧 力学性能 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]