Page 51 - 《精细化工》2022年第12期

第 39 卷第 12 期 精 细 化 工 Vol.39, No.12
2022 年 12 月 FINE CHEMICALS Nov. 2022

功能材料
磷酸铝表面修饰及增强双马来酰亚胺复合材料

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牛永安 ，宋博伦 ，郑烁今 ，石增辉 ，张 鑫
（1. 沈阳化工大学 材料科学与工程学院，辽宁 沈阳 110142；2. 沈阳化工大学 化学工程学院，辽宁 沈
阳 110142）
摘要：以表面修饰的层状磷酸铝（m-LAP）为增强材料，双马来酰亚胺（BMI）为基体，利用机械共混制备了
m-LAP/BMI 复合材料。采用 FTIR 和 XRD 对修饰前后的 LAP 进行了表征，利用 SEM、电子万能试验机、综合
热分析仪、动态热机械分析仪对 m-LAP/BMI 复合材料进行了性能测试。结果表明，m-LAP 与基体之间形成了
连续、紧密、低缺陷的界面结合。m-LAP/BMI 复合材料的玻璃化转变温度（T g ）比纯 BMI（p-BMI）提高了 12 ℃
以上。m-LAP/BMI-3.5 复合材料（3.5 为 m-LAP 的含量，以 BMI 树脂预聚物的质量为基准，下同）的弯曲强度
为 173.37 MPa，比 p-BMI 提高了 15.1%；经 300 ℃热处理 6 h 后，其弯曲强度为未热处理的弯曲强度的 71.2%。
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m-LAP 的引入及其复合效应使 m-LAP/BMI-3.5 复合材料具有较高的介电性能，在 1×10 ~1×10 Hz 范围，
介电常数为 3.80~4.46，介电损耗<0.02，表明 m-LAP 与 BMI 交联反应形成的复合相使复合材料的综合性能
得到明显提高。
关键词：聚合物；复合材料; 界面；磷酸铝；表面修饰；功能材料
中图分类号：TQ323.7；TB332 文献标识码：A 文章编号：1003-5214 (2022) 12-2417-07

Bismaleimide composites reinforced with surface-modified
aluminum phosphate

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NIU Yongan , SONG Bolun , ZHENG Shuojin , SHI Zenghui , ZHANG Xin
（1. School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142,
Liaoning, China; 2. College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142,
Liaoning, China）
Abstract: m-LAP/BMI composites were synthesized via mechanical blending of surface-modified layer
aluminum phosphate (m-LAP), which acted as reinforcer and its structure before and after modification was
characterized by FTIR and XRD, and the substrate of bismaleimide (BMI), followed by property analyses
by SEM, electronic universal testing machine, integrated thermal analyzer and dynamic mechanical
analyzer. The results showed that a continuous, tight interface with low defect was formed between m-LAP
and BMI matrix, and the glass transition temperature (T g) of m-LAP/BMI composites was 12 ℃ higher
than that of pure BMI (p-BMI). The flexural strength of m-LAP/BMI-3.5 composites (3.5 refers to m-LAP
content based on the mass of BMI prepolymer, the same below) was increased to 173.37 MPa at room
temperature, 15.1% higher than that of p-BMI. Moreover, the flexural strength of composite heat treated at
300 ℃ for 6 h was still maintained 71.2% of the strength without heat treatment. Introduction of m-LAP
and its composite effect made the m-LAP/BMI-3.5 composites have higher dielectric properties with a
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dielectric constant between 3.80 and 4.46 and dielectric loss < 0.02 in the frequency range of 1×10 to
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1×10 Hz, indicating that the composite phase formed by the crosslinking reaction between m-LAP and
BMI improved the comprehensive properties of the composites.
Key words: polymers; composites; interface; aluminum phosphate; surface modification; functional materials

收稿日期：2022-04-06; 定用日期：2022-06-14; DOI: 10.13550/j.jxhg.20220380
基金项目：国家自然科学基金（51703134）；辽宁省教育厅面上项目（LJKZ0428）
作者简介：牛永安（1983—），男，副教授，E-mail：niuyongan@163.com。联系人：张 鑫（1983—），女，副教授，E-mail：zhangxin0406@
126.com。