塑料科技2025，Vol.53Issue(6)：46-50,5.DOI:10.15925/j.cnki.issn1005-3360.2025.06.008
接枝聚烯烃对碳酸钙填充复合材料分散结构与拉伸性能的影响
Effects of Grafted Polyolefin on Dispersion Structure and Tensile Properties of Calcium Carbonate Filled Composites
摘要
Abstract
Maleic anhydride(MAH)grafted polyolefins as compatibilizer are widely used in the preparation and modification of polyolefin composites filled with calcium carbonate.The study focused on polyethylene/ethylene-vinyl acetate copolymer(PE/EVA)composites filled with 50％calcium carbonate by mass.It compared the effects of maleic anhydride-grafted polyethylene(PE-g-MAH)and maleic anhydride-grafted ethylene-vinyl acetate copolymer(EVA-g-MAH)on their structure and properties.The results showed that PE-g-MAH enhanced the dispersion of calcium carbonate particles in the PE phase,creating a selective distribution structure.EVA-g-MAH boosted the polarity of the EVA phase and the interaction between the particles and EVA phase,improving the interphase interaction.Adding PE-g-MAH and EVA-g-MAH increased the intensity ratio of absorption peaks(I1 735/I1 426)ratio to 0.40 and 0.28,and raised the melting point of PE in the composites by 1.55℃ and 0.66℃,respectively.The grafted polyolefins strengthened the tensile strength of the composites but reduced their elongation at break.PE-g-MAH increased the tensile strength to 14.2 MPa,while EVA-g-MAH raised the elongation at break to 350％.The combined effect of PE-g-MAH and EVA-g-MAH resulted in a change rate of 43％in the elongation at break of the composite material after 40 days at 23℃.关键词
聚乙烯/乙烯-乙酸乙烯酯共聚物/马来酸酐接枝/碳酸钙/拉伸性能Key words
Polyethylene/Ethylene-vinyl acetate copolymer/Maleic anhydride grafting/Calcium carbonate/Tensile properties分类
通用工业技术引用本文复制引用
洪森林,段春来,韩志东..接枝聚烯烃对碳酸钙填充复合材料分散结构与拉伸性能的影响[J].塑料科技,2025,53(6):46-50,5.基金项目
黑龙江省自然基金重点资助项目(ZD2020E007) （ZD2020E007）
