石油化工2024，Vol.53Issue(3)：354-361,8.DOI:10.3969/j.issn.1000-8144.2024.03.007
填料对食品接触类聚丙烯复合材料结构与性能的影响
Effect of different fillers on structure and properties of food contact grade polypropylene composites
摘要
Abstract
The polypropylene(PP)-based composites were prepared by introducing fillers such as wollastonite,whisker and talc into the PP/ethylene-octene copolymer/linear low density polyethylene by melt blending.The effects of these fillers on structures and properties of the PP-based composites were studied by DSC,SEM,DMA.The results show that the introduction of inorganic fillers improves the crystallization performance of PP-based composites.Moreover,compared with wollastonite and whisker,talc can effectively promote the regular arrangement of molecular chain segments between the layers,hence a relatively perfect filler network is formed in the matrix.As a result,the storage modulus of PP-based composites is enhanced,and the tensile strength and flexural strength are improved by 55.6%and 86.9%,respectively,with no obvious reduction in the impact strength at high amount.Ultimately,the content of small molecule precipitates is reduced to 1.49%(w),which can meet the application requirement of the food-contact materials.关键词
聚丙烯复合材料/填料/机械性能/食品接触材料Key words
polypropylene composite/filler/mechanical property/food-contact material分类
化学化工引用本文复制引用
王平,陆海冰,刘文秀,王毅,吴良伟,姚益权..填料对食品接触类聚丙烯复合材料结构与性能的影响[J].石油化工,2024,53(3):354-361,8.基金项目
国家自然科学基金项目(51903002) （51903002）
安徽省自然科学基金优青项目(2308085Y34) （2308085Y34）
安徽省科技重大专项项目(202103a05020031) （202103a05020031）
安徽省高校自然科学杰出青年科研项目(2022AH020024) （2022AH020024）
安徽省高校哲学社会科学重大研究项目(2022AH040047) （2022AH040047）
安徽建筑大学博士启动基金(2019QDZ22,2023QDZ23) （2019QDZ22,2023QDZ23）
安徽省博士后研究人员科研活动经费资助项目(2020B413) （2020B413）
芜湖市科技计划项目(2022yf27) （2022yf27）
安徽高校协同创新项目(GXXT-2023-08). （GXXT-2023-08）
