碳纤维增强空心玻璃微珠/环氧树脂复合材料的力学性能

doi:10.11901/1005.3093.2016.283

材料研究学报

2017, Vol. 31

Issue (4): 300-308 DOI: 10.11901/1005.3093.2016.283

研究论文

本期目录 | 过刊浏览

碳纤维增强空心玻璃微珠/环氧树脂复合材料的力学性能

余为(

), 王亚东, 张任良, 李婷, 李慧剑

燕山大学河北省重型装备与大型结构力学可靠性重点实验室秦皇岛 066004

Mechanical Properties of Carbon Fiber Reinforced Hollow Glass Microsphere/Epoxy Composite

Wei YU(

), Yadong WANG, Renliang ZHANG, Ting LI, Huijian LI

Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures of Hebei Province, Yanshan University, Qinhuangdao 066004, China

引用本文:

余为, 王亚东, 张任良, 李婷, 李慧剑. 碳纤维增强空心玻璃微珠/环氧树脂复合材料的力学性能[J]. 材料研究学报, 2017, 31(4): 300-308.
Wei YU, Yadong WANG, Renliang ZHANG, Ting LI, Huijian LI. Mechanical Properties of Carbon Fiber Reinforced Hollow Glass Microsphere/Epoxy Composite[J]. Chinese Journal of Materials Research, 2017, 31(4): 300-308.

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摘要:

制备了纤维长度为1 mm和2 mm的碳纤维增强空心玻璃微珠/环氧树脂复合材料,其纤维质量比分别为0.2%、0.5%、1%和3%。对材料进行三点弯曲实验和压缩实验,研究了纤维长度和纤维质量比对其弯曲强度和弯曲弹性模量、压缩强度和压缩弹性模量等力学性能的影响。结果表明,添加两种长度的碳纤维都能明显提高复合材料的弯曲和压缩力学性能。随着碳纤维质量比的增大复合材料的弯曲强度和压缩强度呈先增大后减小的趋势,当碳纤维的质量比为0.5%时达到最大值,随后则随纤维含量的增大而逐渐降低。当碳纤维的长度为1 mm质量比为0.5%时,复合材料试件的弯曲强度和压缩强度比未添加纤维时分别提高198%和110%。碳纤维的长度为1 mm时纤维含量的变化对复合材料的弯曲强度、压缩强度和压缩弹性模量有较大的影响,但是当纤维长度为2 mm时纤维含量的变化对弯曲强度和压缩强度的影响不大。

关键词 ：复合材料, 碳纤维, 空心玻璃微珠/环氧树脂, 弯曲强度, 压缩强度

Abstract：

Composites of hollow glass microspheres/epoxy resin were reinforced with carbon fibers (CF) of 1 mm and/or 2 mm in length, with mass fraction: 0.2%, 0.5%, 1% and 3% for the two fibers, respectively. The effect of the length and content of fibers on the flexural strength and flexural modulus, compressive strength and compressive elastic modulus of composites was investigated by three-point bending tester and compression testing. The experimental results show that the addition of carbon fibers of two different lengths can significantly improve the flexural and compressive properties of composite materials. The flexural strength and compressive strength of the composite increase firstly and then decrease with the increasing mass fraction of carbon fibers, which reach a maximum value when the fiber mass fraction is 0.5%, and then decrease with the increasing content of carbon fibers. When the length of carbon fiber is 1mm and the fiber mass fraction is 0.5%, the flexural strength increased by 198% and the compressive strength increased by 110% in contrast to that without addition of carbon fiber. When the length of carbon fiber is 1mm, the change of fiber content has great influence on the flexural strength, compressive strength and compressive modulus of the composite. However, when the length of carbon fiber is 2 mm the effect of the change of fiber content on the flexural strength and compressive strength of composites is a little.

Key words： composite carbon fiber hollow glass microsphere/epoxy flexural strength compressive strength

收稿日期: 2016-06-30

ZTFLH:

TB332

基金资助:河北省自然科学基金青年基金(A2014203051)和河北省高等学校科学技术研究项目(Z2015089)

作者简介:

作者简介余为,男,1979年生,副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.283 或 https://www.cjmr.org/CN/Y2017/V31/I4/300

表1 碳纤维-空心玻璃微珠/环氧树脂材料配比

图1 弯曲试件

图2 压缩试件

图3 碳纤维-空心玻璃微珠/环氧树脂试件的弯曲载荷-位移曲线

表2 试件的弯曲实验数据

图4 碳纤维-空心玻璃微珠/环氧树脂的弯曲强度

图5 碳纤维-空心玻璃微珠/环氧树脂的弯曲比强度

图6 碳纤维-空心玻璃微珠/环氧树脂复合材料的弯曲弹性模量

图7 不同纤维质量比碳纤维-空心玻璃微珠/环氧树脂试件的压缩应力-应变曲线

表3 试件的压缩实验数据

图8 碳纤维-空心玻璃微珠/环氧树脂复合材料的压缩强度

图9 碳纤维-空心玻璃微珠/环氧树脂复合材料的压缩弹性模量

图10 弯曲试件断口扫描电镜图片

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