摘要
以聚己二酰间苯二甲胺(MXD6)/玻璃纤维(GF)复合材料为研究对象,采用DSC、XRD、偏光显微镜和毛细管流变仪等方法考察了P22成核剂对MXD6/GF复合材料的力学性能、耐热性能、结晶性能和流变性能的影响。实验结果表明,当P22含量由0.05%(w)增加至0.50%(w)时,MXD6/GF复合材料的力学性能略降低,热变形温度由93.4℃提高至195.0℃以上;当P22含量为0.10%(w)时,非牛顿指数明显增加,熔体切敏性降低,加工性能改善;当P22含量为0.30%(w)时,P22对MXD6/GF复合材料具有异相成核作用,使晶体尺寸减小,晶体均匀性提高,晶型为准α晶型,结晶度和结晶速率达到最大,GF在MXD6中分散均匀且与MXD6的界面黏结好,“空芯”现象明显改善。
The effects of P22 nucleating agent on the mechanical,heat resistance,crystallization and rheological properties of poly(m-xylylene adipamide)(MXD6)/glass fiber(GF)composites were investigated by DSC,XRD,a polarizing microscope,and a capillary rheometer.The results show that with the increase of P22 content from 0.05%(w)to 0.50%(w),mechanical properties of MXD6/GF composites decrease slightly,and hot deformation temperature increases from 93.4℃to higher than 195℃.When P22 content reachs 0.10%(w),the non-Newtonian index increases significantly,the melt shear sensitivity decreases,and processing properties are improved.When P22 content is 0.30%(w),P22 has obvious heterogeneous nucleation effect on MXD6/GF composites,which reduces the crystal size and improves the crystal uniformity.The crystal form is quasi-αcrystal,and the crystallinity and crystallization rate reach the maxima.GF is uniformly dispersed in MXD6 and well bonded to the interface of MXD6,and the“hollow core”phenomenon is significantly improved.
作者
解娜
XIE Na(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)
出处
《石油化工》
北大核心
2025年第12期1700-1707,共8页
Petrochemical Technology
基金
中国石化集团科技开发项目(223337)。
关键词
聚己二酰间苯二甲胺
玻璃纤维
成核剂
热变形温度
poly(m-xylylene adipamide)
glass fiber
nucleating agent
hot deformation temperature
