改性氰酸酯基复合材料力学和透波性能研究

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (6): 18-22.

改性氰酸酯基复合材料力学和透波性能研究

孙煜¹, 徐任信^1*, 郑从伟², 王钧¹

1.武汉理工大学材料科学与工程学院,武汉 430070;
2.国家国防科技工业局协作配套中心,北京 100081

收稿日期:2014-12-17 出版日期:2015-06-28 发布日期:2021-09-13
通讯作者: 徐任信(1973-),男,博士,副教授,主要从事电磁功能复合材料设计与应用研究、高性能低成本复合材料工艺研究。
作者简介:孙煜(1991-),男,硕士研究生。

STUDY ON MECHANICAL AND WAVE-TRANSPARENT PROPERTIES OF MODIFIED CYANATE ESTER-BASED COMPOSITES

SUN Yu¹, XU Ren-xin^1*, ZHENG Cong-wei², WANG Jun¹

1. School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;
2. Science and Technology Department,The Center of Coordination ＆ Support of Sastind,Beijing 100081,China

Received:2014-12-17 Online:2015-06-28 Published:2021-09-13

摘要/Abstract

摘要： 利用低介电改性剂对氰酸酯树脂进行改性,制备了石英纤维/改性氰酸酯树脂复合材料,利用SEM表征了树脂及其复合材料的断面,并对改性氰酸酯树脂的耐热性能、力学性能、复合材料的力学性能及透波性能进行了研究。结果表明,改性氰酸酯树脂的玻璃化转变温度达到200℃以上,树脂拉伸破坏表现为韧性断裂,拉伸强度、弯曲强度和压缩强度分别在27MPa、69MPa和148MPa以上;改性氰酸酯树脂和纤维的界面结合良好,复合材料的拉伸强度、弯曲强度和压缩强度分别达到447MPa、461MPa和259MPa以上;在0.5~18GHz范围内,介电常数为3.1~3.3,4mm试样的S₂₁小于-1.6dB。

关键词: 氰酸酯树脂, 复合材料, 耐热性, 力学性能, 透波性能

Abstract: The cyanate ester resin was modified with the low dielectric modifier, and the composites were prepared from the quartz fiber and modified cyanate ester resin. The fracture surface of the matrix and composites were characterized by SEM. The heat resistance and mechanical properties of modified cyanate ester resin were studied. The mechanical properties of composites were analyzed as well as the wave-transparent properties of composites. The results show that, the glass transfer temperature of modified cyanate ester resin exceeds 200℃. The fracture of the modified resins belongs to ductile fracture. The tensile strength, flexural strength and compressive strength of the resins exceed 27MPa, 69MPa and 148MPa, respectively. The interfacial compatibilities of the modified cyanate ester resin and quartz fiber were favorable. The tensile strength, flexural strength and compressive strength of composites exceed 447MPa, 461MPa and 259MPa, respectively. As the frequency between 0.5GHz and 18GHz, the dielectric constants of composites are between 3.1 and 3.3, and the S₂₁ of 4mm samples are less than -1.6dB.

Key words: cyanate ester, composites, heat resistance, mechanical properties, wave-transparent properties

中图分类号:

TB332

孙煜, 徐任信, 郑从伟, 王钧. 改性氰酸酯基复合材料力学和透波性能研究[J]. 复合材料科学与工程, 2015, 0(6): 18-22.

SUN Yu, XU Ren-xin, ZHENG Cong-wei, WANG Jun. STUDY ON MECHANICAL AND WAVE-TRANSPARENT PROPERTIES OF MODIFIED CYANATE ESTER-BASED COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(6): 18-22.

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