English
简体中文
한국어
日本語
Italian
Español
português
русский
Türk
Deutsche
عربى
繁体中文
GUANGZHOU JUNQIAN NONWOVEN CO., LTD.
FOSHAN GUIDE TEXTILE CO., LTD.
        >> Non Woven Expert Who You Trust <<
Tel:+86-757-85700009、+86-757-85700020

Analysis of the main difference between non woven membrane and traditional diaphragm

Home > News > Product knowledge  > Analysis of the main difference between non woven membrane and traditional diaphragm

Hot-sell product

Contact us

Guangzhou Junqian Nonwoven Co., Ltd.
Foshan Guide Textile Co., Ltd.

Sales Hotline: + 86-757-85700009
Customer Service Hotline: + 86-757-85756089
Email: sales2@guideco.cn
Address: Yonghao Industrial Park, Yongqing Rd., Yanbu, Dali Town, Nanhai Dist., Foshan, G.D. 528247, CHINA

Analysis of the main difference between non woven membrane and traditional diaphragm

2018-11-28 16:30:42
Analysis of the main difference between nonwoven membrane and traditional diaphragm

First, in terms of materials, PP / PE andnonwoven fabric(China Spun Bonded Non Woven Supplier) (in this case, PET nonwoven fabric) use polymer materialshaving different glass transition temperatures. Simply put, the glasstransition temperature of PP / PE is lower than room temperature, and as thetemperature increases, the film material becomes softer (strictly, themolecules are locally accelerated).

For example, the internal temperature ofthe battery is about 60 °C during charging and discharging, the electrode will repeatedlyexpand and contract, and the PP / PE film will gradually become smaller againand again under the action of shrinkage stress.

China Spun Bonded Non Woven Supplier, Non Woven Polyester Fabric Wholesale, Non Woven Polyester Material Factory

However, with PET nonwoven fabric(Non Woven Polyester Fabric Wholesale), theglass transition temperature is above 80 ° C, which not only softens with increasing temperature, but alsostabilizes the porosity well and makes the battery cycle life longer.

In fact, the same phenomenon has beenconfirmed when using nickel-hydrogen batteries.

China Spun Bonded Non Woven Supplier, Non Woven Polyester Fabric Wholesale, Non Woven Polyester Material Factory

High-rate nickel-metal hydride batteries,the internal temperature of the battery will exceed 100 °C, using a general diaphragm,or a nylon material of a general diaphragm, under the conditions of D-type 200battery discharge, only a few charge and discharge cycles, the diaphragm willquickly degenerate.

If you use a special nylon diaphragm with ahigh glass transition temperature, battery life can be leaps and bounds.

In the future, many facts will be continuously verified in experiments. For example, a non-woven membrane(Non Woven Polyester Material Factory) made ofglass fiber can also be used for lithium ion batteries, as well as PP / PEmicroporous membranes. Large, but the time of lithium-ion battery is mainlyused for cameras and mobile phones. The thickness of the diaphragm is thin andhas a closed-cell function, which leads to the development of microporousmembranes.