铺层方式和成型参数对层压板滚筒剥离性能的影响

LAYING MODE AND FORMING PARAMETERS ON PEELING PERFORMANCE OF LAMINATE ROLLER

以玻璃纤维布/增韧酚醛树脂的热压成型层压板为研究对象,通过滚筒剥离强度表征层压板面-面结合性能,采用电子显微镜观察粘接面破坏形式的微观形貌。结合以上测试研究了铺层方式、测试方向、经纬密、成型参数等对八枚三飞缎纹布层压板滚筒剥离强度的影响并找出其中的规律。结果表明:剥离面为纬面缎时,加载方向平行、垂直剥离面长浮纤维的滚筒剥离强度优于剥离面为经面缎的铺层,其中0°的层间粘接性能最优,非剥离面的铺层方向对滚筒剥离强度无影响;经纬密增加有助于提高滚筒剥离性能;在一定升温速率范围内,降低升温速率有助于提高滚筒剥离强度,加压时机对层间滚筒剥离基本无影响。

The hot pressed laminate of glass fiber cloth/toughened phenolic resin was taken as the research object,the surface-surface bonding properties of the laminate were characterized by drum peeling strength,and the microstructure of the failure form of the adhesive surface was observed by electron microscope.Combined with the above tests,the effects of laying mode,testing direction,warp and weft density,forming parameters on the peeling strength of eight three flying satin laminate rollers are studied and the laws are found out.The results show that when the stripping surface is weft yarn surface,the drum peeling strength for which peeling surface long floating fiber are vertical and parallel to the loading direction is better than warp surface.The interlaminar adhesive property of 0°is the best,and the laying direction of non-stripping surface has no effect on the drum peeling strength.And the increase of theodolite density is helpful to improve the drum peeling strength.In a certain range of heating rate,reducing the heating rate is helpful to improve the peeling strength of the drum.And the time of pressure has no effect on the peeling of the interlaminar drum.