Tianjin Dg Membrane Co., Ltd.

Tianjin University

Hainan Lingkang Pharmaceutical Co., Ltd

Tianjin Dg Membrane Technology Co., Ltd.

Long Li

Xin Li

Yongjun Jiao

Xinjian Deng

Jianhua Li

Linggang Tao

Baohong Hou

Ying Bao

Jun Lv

Hongxun Hao

A microporous membrane of a polyethylene-based composite material, including high density and high crystallinity of polyethylene as a base material. The polyethylene is modified by a modifying agent accounting for 10-25 wt. % of the membrane and including a moderate molecular weight of rubber selected from polyisobutylene (PIB), ethylene-propylene methylene copolymer (EPM), or a mixture thereof, the rubber having a dynamic viscosity of between 50 and 2000 Pa&#xb7;S at 100&#xb0; C. and a weight average molecular weight of between 90,000 and 250,000. The modified polyethylene is dissolved in a solvent and a pore-forming agent for pore formation.

Microporous membrane of polyethylene-based composite material and preparation method thereof

A lithium ion battery separator consists of a PE micro-porous substrate A and a micro-porous coating B which is located on the substrate A and formed of mixing pre-crosslinked rubber particles and ceramic fine powder composite materials. The separator has characteristics of good compressible elasticity, thermal shutdown, low heat shrinkage, high temperature membrane rupture resistance and so on.

Coated separator with compressible elasticity, thermal shutdown and high temperature resistance

The present invention relates to a composite nano microporous diaphragm for use in lithium ion cells using polyolefin modified with post-crosslinked rubber and manufacturing method thereof. The microporous diaphragm at least comprises a nano microporous diaphragm A layer with a chemical gel content of more than 20%, the microscopic structure thereof is designed to be the rubber material that has been evenly dispersed and has subjected to a post-crosslinking treatment in polyolefin nano microfiber matrix, forming a nano microporous diaphragm of rubber-plastic composite. The nano microporous diaphragm with high strength, thermal cutoff, high temperature resistance, as well as good liquid absorption and swelling and compression elasticity can be applied to lithium ion power cells with high safety and long cycling life.

Nano microporous diaphragm of post-crosslinked rubber and polyolefin composite, and manufacturing method thereof

It discloses Omeprazole Sodium semihydrate and preparation method thereof, wherein every mole of Omeprazole Sodium semihydrate contains 0.5 mole of water, and it has an X-ray diffraction pattern comprising characteristic peaks at diffraction angles 2&#x3b8; of 6.26&#xb0;&#xb1;0.1&#xb0;, 11.10&#xb0;&#xb1;0.1&#xb0;, 12.20&#xb0;&#xb1;0.1&#xb0;, 15.58&#xb0;&#xb1;0.1&#xb0;, 16.02&#xb0;&#xb1;0.1&#xb0;, 17.12&#xb0;&#xb1;0.1&#xb0;, 19.08&#xb0;&#xb1;0.1&#xb0;, 21.00&#xb0;&#xb1;0.1&#xb0;, 22.68&#xb0;&#xb1;0.1&#xb0;, 23.48&#xb0;&#xb1;0.1&#xb0;, 24.08&#xb0;&#xb1;0.1&#xb0;, 26.52&#xb0;&#xb1;0.1&#xb0; and 28.08&#xb0;&#xb1;0.1&#xb0;. A raw material of Omeprazole Sodium hydrate is added into an organic solvent, stirring for 2&#x2dc;9 hours at constant temperature of 25&#x2dc;60&#xb0; C., thereafter Omeprazole Sodium semihydrate is provided after filtrating and drying.

Omeprazole Sodium semihydrate and preparation method thereof

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Tianjin, China

Long Li