环氧树脂多孔复合材料的制备及性能

发布时间：2018-01-22 19:14

本文关键词： 环氧树脂多孔复合材料孔隙率孔径分布功能材料　出处：《精细化工》2017年05期 　论文类型：期刊论文

【摘要】：以环氧树脂为基体、蓖麻油酸(RA)或二聚蓖麻油酸(DRA)改性的四乙烯五胺(TEPA)(RATEPA/DRATEPA)作为固化剂、水为致孔剂、釉粉为无机填料,通过树脂-水-填料悬浮乳液复合体系聚合法,在室温下合成了环氧树脂多孔材料,采用SEM、压汞仪、电子万能试验机、TGA对多孔材料的形貌、孔径分布、孔隙率、机械性能及热性能进行了表征和测试。结果表明:随着水相质量分数和填料粒径的增大,多孔材料的孔径和孔隙率增大,压缩强度减小;随着固化剂分子量的增大,多孔材料的孔径和孔隙率减小,压缩强度增大。当填料粒径为40μm,固化剂为RATEPA,m(水相)∶m(树脂相)=2∶1时,多孔材料的综合性能最佳,其最可几孔径为3.449μm,孔隙率为21.8%,压缩强度为26.89 MPa。TGA和DTG测试结果表明:环氧树脂多孔材料的热稳定良好,具有耐高温性能,可以在高温条件下应用。
[Abstract]:Tetraethylenepentylamine (TEPAA) modified by epoxy resin, ricinoleic acid (RAA) or dimer ricinoleic acid (DRA) was used as curing agent, and RATEPA / DRATEPA) was used as the curing agent. Epoxy resin porous materials were synthesized at room temperature by using water as pore-forming agent and glaze powder as inorganic filler through the polymerization of resin-water-filler suspension emulsion composite system. SEM, mercury injection instrument and electronic universal testing machine were used to synthesize epoxy resin porous materials. The morphology, pore size distribution, porosity, mechanical properties and thermal properties of the porous materials were characterized and measured by TGA. The pore size and porosity of porous materials increase and the compressive strength decreases. With the increase of molecular weight of the curing agent, the pore size and porosity of the porous material decrease, and the compressive strength increases. When the particle size of the filler is 40 渭 m, the curing agent is RATEPA. When the resin phase is 2: 1, the porous material has the best comprehensive properties, the most suitable pore size is 3.449 渭 m and the porosity is 21.8%. The results of compression strength of 26.89 MPa.TGA and DTG show that the porous epoxy resin has good thermal stability and high temperature resistance and can be applied at high temperature.
【作者单位】：中国科学院广州化学研究所中国科学院纤维素化学重点实验室;中国科学院大学;中国科学院佛山功能高分子材料中心;
【基金】：广州市科技计划项目(201510010183)~~
【分类号】：TB332;TQ323.5
【正文快照】： 3.中国科学院佛山功能高分子材料中心,广东佛山528000)Foundation item:the Guangzhou Municipal Science and Technology Program(201510010183)注浆成型是陶瓷产业生产结构、形状复杂的日用和卫生陶瓷品常用的方法[1]。传统的陶瓷注浆成型是以石膏为模具,通过石膏自身的毛细

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