PE/PP/微米SiO2消光热封膜的研制及其性能研究  

Development and performance of PE/PP/micron SiO2 matting and heat⁃sealing film

作　　者：苏羽航 林渊智 毛健全 王永祥 刘向 余立 柯俊沐 陈忆诗 SU Yuhang;LIN Yuanzhi;MAO Jianquan;WANG Yongxiang;LIU Xiang;YU Li;KE Junmu;CHEN Yishi(Fujian Polytechnic Normal University,Fuzhou 350300,China;FOROP Advanced Materials Co,Ltd,Fuzhou 350300,China;Tianjin Huaheng Packaging Materials Co,Ltd,Tianjin 300450,China;Fujian Universities and Colleges Engineering Research Center of Soft Plastic Packaging Technology for Food,Fuzhou 350300,China;Technical Creation Center for Packaging Engineering in Fuzhou,Fuzhou 350300,China)

机构地区：[1]福建技术师范学院,福州350300 [2]福融新材料股份有限公司,福州350300 [3]天津市华恒包装材料有限公司,天津300450 [4]食品软塑包装技术福建省高校工程研究中心,福州350300 [5]福州市包装工程行业技术创新中心,福州350300

出　　处：《中国塑料》2025年第3期41-47,共7页China Plastics

基　　金：福建省科技厅工业引导性项目(2020H0028);福州市科技计划项目(2020-PT-150);福建省科技厅高校产学合作项目(2019H6026)。

摘　　要：设计3层消光热封膜复合结构,筛选适合的聚乙烯与聚丙烯做为视觉层材料,在芯层中添加微米SiO2来提高薄膜雾度,通过3层共挤流延法进行薄膜的制备,探讨薄膜的各项性能。结果表明,PE-HD与共聚聚丙烯组成最佳消光材料,随着PE-HD在视觉层中含量的增加,可以提高PE-HD/PP混合体系的冲击强度、储能模量和损耗模量,对薄膜具有增强增韧的作用,可加快PE-HD/PP混合体系的结晶速率,加快薄膜雾度的形成;且当PE-HD在视觉层中含量为40%时,薄膜的雾度达到80%,光泽度为7.8%,薄膜消光效果最好;当微米SiO2在芯层中的含量为3%时,薄膜的拉伸强度和断裂伸长率最高,达到29.5 MPa和64%,薄膜的透光率为58.8%,雾度提高到82.3%。The composite structure of a three-layered matting and heat-sealing film was designed by selecting suitable poly-ethylene(PE)and polypropylene(PP)as visual layer materials and adding micron SiO2 into the core layer to improve the haze of the film.The film was prepared by using a three-layer co-extrusion casting method,and its properties were in-vestigated.The results indicated that PE-HD and copolymerization-type PP could be combined to form the best matting material.With an increase in the PE-HD content in the visual layer,the PE-HD/PP hybrid system obtained an improve-ment in the impact strength,storage modulus,and loss modulus,indicating a reinforcing and toughening effect on the film.This also,accelerated the crystallization rate of the PE-HD/PP hybrid system and promoted the haze formation of the film.The film showed a haze of 80%and a gloss of 7.8%at a PE-HD content of 40 wt%in the visual layer along with an optimal matting effect.The film also presented the highest tensile strength of 29.5 MPa and the highest elonga-tion at break of 64%at a micron SiO2 content of 3 wt%in the core layer.The film obtained a light transmittance of 58.8%,and its haze increased to 82.3%.

关 键 词：消光膜 热封 微米二氧化硅 雾度 3层流延共挤 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]