氢氧化钠对玻纤/环氧树脂复合材料侵蚀及力学性能影响研究  

Influence on the erosion and mechanical property of E-glass fiber/epoxy resin composite by NaOH

作　　者：冯古雨 曹海建[1,2] 周洪涛[3] 钱坤[1] 

机构地区：[1]生态纺织教育部重点实验室,江南大学纺织服装学院,无锡214122 [2]南通大学纺织服装学院,南通226019 [3]纺织服装学院,盐城工业职业技术学院,盐城224005

出　　处：《化工新型材料》2017年第8期134-136,共3页New Chemical Materials

基　　金：国家自然科学基金(51302110);江苏省产学研前瞻性联合研究项目(BY2014023-15,BY2014023-14);中央高校基本科研业务费专项资金(JUSRP41501)

摘　　要：以2400tex无捻玻纤粗纱为原料,在SGA598型三维织机上制备出一种三维浅交弯联机织复合材料预制体,以20%(wt,质量分数)的氢氧化钠溶液作为侵蚀液在60℃的温度下,以浸泡的方式对玻璃纤维预制体进行处理;以环氧树脂E51和固化剂聚醚胺WHR-H023以质量配合比3∶1的比例组成树脂体系,通过真空灌注成型的方式制备出三维浅交弯联机织复合材料。采用原子力显微镜、万能材料试验机、扫描电镜等仪器来测试与验证氢氧化钠溶液对预制体的侵蚀效果及对复合材料力学性能的影响。结果表明:氢氧化钠溶液浸泡20min玻璃纤维后,玻璃纤维间产生了粘合作用,有利于提高复合材料力学性能,复合材料弯曲强度达到最大为602MPa;超过20min后,氢氧化钠溶液的侵蚀作用破坏了玻璃纤维的结构,影响了复合材料的力学性能。A three-dimensional（3D）curved shallow-crossing linking reinforcement was prepared from glass roving of 2400 tex on a 3D weaving machine modeled SGA598.The reinforcement was corroded by 20%（wt）NaOH liquor at 60℃.The resin matrix was composed of epoxy resin E51 and polyether amine WHR-H023 in a mass ratio of 3∶1,The 3D curved shallow-crossing linking woven composite was then made from surface-treatment reinforcement and resin matrix by VARI method.Atomic force microscope（AFM）,universal material testing machine and scanning electron microscope（SEM）were used to characterize the erosion of NaOH on reinforcement and the following composites.The results showed that the adhesive effect between E-glass fiber by erosion of NaOH in 20 min,the bending properties of 3D composite was enhanced by the adhesive effect.The maximum bending strength of 3D composite with erosion of NaOH was 602 MPa.Construction of E-glass fiber was destroyed by erosion of NaOH exceeded 20 min,the erosion of NaOH ending properties of 3D composite was declined.

关 键 词：氢氧化钠 侵蚀 玻璃纤维 复合材料 力学性能 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]