玻纤增强环氧树脂复合泡沫材料在酸碱腐蚀下的弯曲性能研究  

RESEARCH ON FLEXURAL PROPERTIES OF EPOXY RESIN SYNTACTIC FOAM REINFORCED BY GLASS FIBER UNDER ACID AND ALKALI CORROSION

作　　者：王彩华[1,2] 薛海龙 余为[1] 李慧剑[1] WANG CaiHua;XUE HaiLong;YU Wei;LI HuiJian(Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures of Hebei Province, Yanshan University, Qinhuangdao 066004, China;Qinhuangdao Campus of Northeast Petroleum University, Qinhuangdao 066004, China)

机构地区：[1]燕山大学河北省大型装备与结构力学可靠性重点实验室,秦皇岛066004 [2]东北石油大学秦皇岛分校,秦皇岛066004

出　　处：《机械强度》2018年第2期312-318,共7页Journal of Mechanical Strength

基　　金：河北省自然科学基金青年基金(A2014203051);河北省高等学校科学技术研究重点项目(Z112012011);秦皇岛市科学技术研究与发展计划(201401A054)资助~~

摘　　要：制备了玻纤-空心玻璃微珠/环氧树脂复合泡沫材料试件。通过三点弯曲实验,得出了其载荷-位移曲线,研究了玻璃纤维含量对复合泡沫材料的弯曲强度、弯曲弹性模量的影响规律。通过浸泡实验,测量了试件在H_2SO_4和NaOH溶液中的吸湿率随时间的变化曲线。结合扫描电镜图片,分析了酸碱腐蚀对复合材料弯曲性能的影响原因。研究结果表明,当玻纤质量比为10%时,复合材料的弯曲强度达到最大值,较未添加纤维的试件增强了27%,但继续添加纤维,其强度则逐渐降低。酸碱浸泡腐蚀大幅度的降低了复合泡沫材料的弯曲强度,其直接原因是酸碱腐蚀了玻璃纤维与环氧树脂基体的界面,同时对树脂基体也有一定的腐蚀作用。The author prepared specimen of glass fiber-hollow glass microsphere/epoxy syntactic foam material. We have obtained the load-displacement curves by three point bending test,studied the influence of glass fiber content on the bending strength and bending elastic modulus. Through soaking test,we measured the curves of moisture rate of the specimen in H2SO4 and Na OH solution over time. Through the scanning electron microscopy images,we analyzed the effect of acid-base corrosion on the bending properties. The research results showed that when the glass fiber quality ratio is 10%,the bending strength of the composite reached the maximum value,rising by 27% than the specimen without glass fiber. When added more fiber,its strength is gradually reduced. Acid-base soaking corrosion greatly reduces the bending strength of syntactic foam material. The direct reason is that acid-base solution will corrode the interface of glass fiber and epoxy matrix. It also will corrode epoxy matrix.

关 键 词：玻纤 环氧树脂复合泡沫材料 弯曲性能 酸碱腐蚀 

分 类 号：TB332[一般工业技术—材料科学与工程]