Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

China Petroleum Chemical Corporation

China Petroleum & Chemical Corporation

Yiqing Bai

Shijun Zhang

Jingbo Shao

Dali Gao

Hua Yin

Liqiu Chu

Mu Dong

Qiang Li

Meng Xu

Liying Zhang

Jianye Liu

Yun Lyu

Yihui Xu

Hao Zou

Baige Chou

Kai Xu

Peng Guo

Hongwei Shi

Changjin Li

Qingquan Yang

Qi Zhang

Jinliang Qiao

Chenxi Hu

Liangshi Wang

Meifang Guo

Luqiang Yu

Peng Kang

Mingfu Lyu

Hui Quan

Dehui Kong

Yaohui Xu

Honghong Huang

Yujing Tang

Qi Xin

Jianjun Yin

Ruxian Li

Yueming Ren

Mingfu Lv

Tao Cai

Yigang Tan

Jinqi He

Meijie Li

Ruoshi Chen

Yun Lv

Yutao Wang

Xiaoyong Gao

Changhui Sun

Guang Li

A thermoplastic composite material has an inner layer material and at least one layer of outer layer material. The inner layer material is a core layer that contains 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 inner layer-outer layer composite structure improves 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.

Thermoplastic composite material, preparation method therefor and use thereof

A flame-retardant antimicrobial agent is a polymer microsphere with the surface grafted thereof with a guanidine salt. The polymer microsphere has a cross-linked structure composed of a structural unit A derived from maleic anhydride, a structural unit B derived from a monomer M, and a structural unit C derived from a cross-linking agent. The monomer M is selected from a C-Caliphatic olefin or a mixture thereof, and the guanidine salt comprises at least one guanidine salt having the property of flame resistance. The flame-retardant antimicrobial agent has both a good antimicrobial effect and a good flame-retardant effect. A flame-retardant antimicrobial thermoplastic resin composition containing the flame-retardant antimicrobial agent also has a good flame-retardant and antimicrobial performance and a good overall performance.

Flame-retardant antimicrobial agent, preparation method therefor and use thereof, and flame-retardant antimicrobial thermoplastic resin composition

A method for preparing a polyolefin resin powder has the steps of The difference between the solubility parameters of the organic solvent and of the polyolefin resin is within 0-20% of the solubility parameter of the polyolefin resin. The polyolefin resin powder obtained according to this method has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution.

Polyolefin resin powder suitable for selective laser sintering and its preparation method

A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.

Aliphatic polyester resin powder suitable for selective laser sintering and its preparation method

A polyethylene composition comprising an ethylene/&#x3b1;-olefin copolymerized linear low density polyethylene, wherein the polyethylene composition has a Mw of from 100,000 g/mol to 200,000 g/mol, a Mw/Mn of from 4.0 to 9.0, a Mz/Mw of from 4.0 to 7.0, and a Mz+1/Mw of from 4.5 to 13.5, is provided. A film formed of the polyethylene composition is also provided.

Polyethylene compositions and films formed therefrom

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Yiqing Bai