【摘要】 采用硅烷偶联剂、乙醇和水等分别对桦木纤维(BF)和回收纸浆纤维进行表面处理,并分别将改性纤维作为不饱和聚酯树脂(UPR)的增强材料,制备相应的BF/UPR复合材料。研究了不同改性方法对复合材料界面性能的影响。结果表明:不同纤维种类、不同纤维表面处理方法和不同纤维用量对复合材料的界面性能、力学性能等影响较大;经硅烷偶联剂处理后的BF,可有效改善BF与UPR之间的界面相容性;当w(偶联剂处理BF)=16%时,相应复合材料的拉伸强度和冲击强度比纯UPR体系分别提高了31.0%和28.5%;在制备回收纤维/UPR复合材料之前应先对回收材料进行筛选,并且应优先选择对UPR基体树脂具有明显增强作用的回收纤维。更多还原

【Abstract】 The surfaces of birch fibres(BF) and reclaimed pulp fibres were treated by some materials such as silane coupler,ethanol and water respectively,then the relevant BF/UPR(unsaturated polyester resin) composites were prepared with these modified fibres as reinforcing materials of UPR.The influences of different modified methods on interface properties of composites were investigated.The results showed that the influences of different kinds of fibres,different surface treatment methods for fibres and different fibres contents on interface properties and mechanics properties for composites were more great.The BF treated by silane coupler could effectively improve the interface compatibility between BF and UPR.The tensile strength and impact strength of relevant composite were 31.0% and 28.5% more than those of pure UPR system when the mass fraction of BF treated by coupler was 16%.The reclaimed materials should first be screened before preparing reclaimed fibre/UPR composite,and the reclaimed fibres,which could obvious reinforce UPR matrix resin,should be preferred.更多还原