改性含硅芳炔树脂及复合材料的制备和性能表征  

Preparation and Characterization of Modificated Silicon-Containing Arylacetylene Resin

作　　者：闫德强[1] 杨庆涛[1] 周燕[1] 沈学宁[1] 黄发荣[1] 

机构地区：[1]华东理工大学特种功能高分子材料及相关技术教育部重点实验室,上海200237

出　　处：《宇航材料工艺》2016年第3期43-46,共4页Aerospace Materials & Technology

摘　　要：通过胺解反应合成了二(3-乙炔基苯胺)-甲基乙烯基硅烷(SZMV),并对其物理结构进行了表征。将SZMV与含硅芳炔(PSA)树脂通过熔融共混的方法制备了改性PSA树脂(PSA/SZMV)。考察了改性PSA树脂的黏度、固化特性、耐热性能、介电性能以及复合材料的力学性能。研究结果表明SZMV的加入有效降低了树脂的黏度,使其加工工艺性能得到改善,氮气条件下树脂固化物的T5d高达571℃,仍保持良好的耐热性能,改性树脂的介电常数为2.9,复合材料的弯曲和层剪强度分别提高了45%和33.6%。Bis（ 3-acetylenephenyl）-methylvinylsilazane（ SZMV） was synthesized by an aminolysis procedure.The physical structure of SZMV was characterized. And then a modified PSA resin（ PSA / SZMV） was prepared by blending PSA and SZMV. A series of test methods were used to investigate the viscosity,curing reaction,thermal stability and dielectric property of PSA / SZMV resin. The mechanical properties of quartz fiber reinforced composites were also measured. The results show that with the introduction of SZMV,the viscosity of PSA / SZMV resin decreases remarkably,and the processing technology gets improved,the thermal stability and dielectric property of cured PSA /SZMV resin slightly decrease. And the flexural strength and interlaminar shear strength of quartz fiber reinforced PSA /SZMV resin composite increase by 45% and 33.6%,respectively.

关 键 词：硅氮烷 含硅芳炔树脂 力学性能 高性能树脂 复合材料 

分 类 号：TB3[一般工业技术—材料科学与工程]