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1.发明公开
公开(公告)号：EP4234238A1
公开(公告)日：2023-08-30
申请号：EP21882074.4
申请日：2021-10-20
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： XU, Meng , ZHANG, Shijun , GAO, Dali , BAI, Yiqing , XU, Kai , REN, Yueming , LIU, Jianye , QUAN, Hui , DONG, Mu , ZHANG, Qi , CHOU, Baige , LYU, Yun , SHAO, Jingbo
IPC分类号： B32B27/32 , B32B27/18 , B32B27/06 , B32B27/20 , B32B33/00 , C08L23/12 , C08L53/02 , C08L23/08 , C08J5/18 , B29C48/00 , B29C48/08 , B65D65/40
摘要： Disclosed are a propylene polymer-based composite film, a preparation method therefor, and an application thereof. The composite film comprises at least two different layers: layer a and layer b, wherein layer a and layer b each comprise at least one propylene polymer, and at least one of layer a and layer b comprises a propylene impact copolymer, wherein the propylene impact copolymer comprises elastic moieties that form dispersed strip-like rubber phases in the composite film, the rubber phases are arranged parallel to each other, and the average dimension of transverse axes of the rubber phases is 20-200 nm and the average of aspect ratios is 5-20. The composite film has both excellent impact resistance and optical properties, and even has good tensile properties and/or good heat-sealing strength at lower heat-sealing temperatures, and even has good uniformity. The composite film is particularly useful in the field of packaging materials, especially in battery packaging materials, electronic product packaging materials, or food packaging materials.
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公开(公告)号：EP4431275A1
公开(公告)日：2024-09-18
申请号：EP22889462.2
申请日：2022-11-07
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： CHU, Liqiu , ZHANG, Fengqian , XU, Yihui , GAO, Dali , ZHANG, Shijun , QIAO, Jinliang , KONG, Dehui , CHOU, Baige , XIA, Lidong , BAI, Yiqing , XU, Kai , REN, Yueming , ZHAO, Yachao
摘要： The present invention relates to a polypropylene composite material having a melting point gradient structure, a preparation method therefor and a system and use thereof. The composite material comprises a plurality of polypropylene sheet layer unit groups that are sequentially stacked; each polypropylene sheet layer unit group comprises at least one of the same or different polypropylene sheet layer units, the structure of each polypropylene sheet layer unit is BiAiB'i; the structure of the polypropylene composite material is ... i-th group, ... second group, first group, second group, ... i-th group, ... ; the melting point of polypropylene composition Ai is greater than the melting point of polypropylene compositions Bi and B'i; and the average value of the melting points of all outer layers in the i-th group is greater than the average value of the melting points of all outer layers in an (i-1)th group. The polypropylene composite material having a melting point gradient structure of the present invention has a very good tensile property and very good impact resistance, and also has good interlayer stripping strength at a relatively low hot-pressing temperature.
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公开(公告)号：EP4238744A1
公开(公告)日：2023-09-06
申请号：EP21885349.7
申请日：2021-10-30
申请人： CHINA PETROLEUM & CHEMICAL CORPORATION , BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
发明人： GAO, Dali , LI, Changjin , ZHANG, Shijun , XU, Kai , KANG, Peng , ZHANG, Qi , YIN, Hua , LV, Mingfu , KONG, Dehui , XIN, Qi , CAI, Tao , DONG, Mu , SHAO, Jingbo , SHI, Hongwei , SUN, Changhui , BAI, Yiqing , TAN, Yigang , LI, Guang , GAO, Xiaoyong , HE, Jinqi , LI, Meijie , XU, Meng , CHOU, Baige , LV, Yun , REN, Yueming
摘要： Disclosed in the present invention are a thermoplastic composite material, a preparation method therefor and a use thereof. The thermoplastic composite material comprises an inner layer material and at least one layer of outer layer material. The inner layer material is a core layer comprising fiber bundles, a first thermoplastic resin and a first auxiliary agent; and the at least one layer of outer layer material wraps the core layer and is a resin layer comprising a second thermoplastic resin and an optional second auxiliary agent. The fiber bundles extend continuously from one end of the core layer to the opposite end thereof. The thermoplastic composite material of the present invention has an inner layer-outer layer composite structure, can effectively improve the processing performance of the thermoplastic composite material and the lubricity between fibers and resin matrixes during injection molding, and improves the fluidity of the fibers in a resin matrix melt; thus, the comprehensive performance and surface quality of the prepared thermoplastic composite material are greatly improved, the requirements of the injection molding process are reduced, and the application range of the thermoplastic composite material is expanded.
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