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Non-woven fabric for manufacturing Ni-MH battery sulfonated membrane, Ni-MH battery sulfonated membrane and manufacturing method thereof

A nickel-metal hydride battery and non-woven fabric technology, which is applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problems of non-woven substrate cloth surface extension, technical difficulties and complicated processes, etc.

Active Publication Date: 2010-07-14
CHANGZHOU KANGJIE SPECIAL NON WOVEN FABRICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, this method of preparing sulfonated diaphragms by contacting non-woven base material with high-temperature concentrated sulfuric acid has always had an insurmountable technical problem, that is, the strength of non-woven base material will be greatly reduced during the sulfonation process of high-temperature concentrated sulfuric acid. drop, the surface of the non-woven base material is prone to stretching, damage, and breakage
[0008] Originally, the purpose of sulfonating non-woven fabrics is to improve the performance of the diaphragm, but due to the above-mentioned technical difficulties, the strength and performance of the diaphragm cannot be balanced, although many patents use surface pressure and tension Many measures have been taken to reduce the decrease in the strength of non-woven fabrics, but at the same time it also brings problems such as complex process, large equipment investment, high production cost, and unfavorable industrialization implementation.
More importantly, none of these methods fundamentally solve this long-standing technical problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Non-woven fabric for manufacturing Ni-MH battery sulfonated membrane, Ni-MH battery sulfonated membrane and manufacturing method thereof
  • Non-woven fabric for manufacturing Ni-MH battery sulfonated membrane, Ni-MH battery sulfonated membrane and manufacturing method thereof
  • Non-woven fabric for manufacturing Ni-MH battery sulfonated membrane, Ni-MH battery sulfonated membrane and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The method for preparing the non-woven fabric of the sulfonated diaphragm of the nickel-hydrogen battery and the sulfonated diaphragm of the nickel-hydrogen battery is as follows:

[0087] ① Preparation of sulfonated polypropylene-polyethylene composite fiber tow (sulfonated ES composite fiber tow)

[0088] Take 2 to 3 bundles of ES composite fiber tows with a fineness of 1.5dtex (about 100,000 single filaments), pass through the stainless steel guide roller 2 at the input end of the concentrated sulfuric acid bath, penetrate into the concentrated sulfuric acid bath, and pass through the concentrated sulfuric acid bath. The stainless steel guide rollers (3, 4, 5, 6) reciprocate and pass through several times, so that the ES composite fiber tow reciprocates in the concentrated sulfuric acid bath with a length of 30 meters, and then continues to pass through the stainless steel guide roller 7 at the output end of the concentrated sulfuric acid bath. 1. The first pair of t...

Embodiment 2

[0106] The method for preparing the non-woven fabric of the sulfonated diaphragm of the nickel-hydrogen battery and the sulfonated diaphragm of the nickel-hydrogen battery is as follows:

[0107] ① Preparation of sulfonated polypropylene-polyethylene composite fiber tow (sulfonated ES composite fiber tow)

[0108] Prepare sulfonated polypropylene fiber tow (sulfonated PP fiber tow) according to step ① method in Example 1, but the sulfonation process and dilute sulfuric acid cleaning process adopted are different: the concentration of the concentrated sulfuric acid is 96%, the temperature of the concentrated sulfuric acid The temperature is 120°C, and the holding time is 6min; the concentration of dilute sulfuric acid is 50%, and the temperature of dilute sulfuric acid is 90°C;

[0109] ② Preparation of sulfonated polypropylene fiber tow (sulfonated PP fiber tow)

[0110] According to step 1. method in embodiment 1, prepare sulfonated polypropylene fiber tow (sulfonated PP fib...

Embodiment 3

[0121] The method for preparing the non-woven fabric of the sulfonated diaphragm of the nickel-hydrogen battery and the sulfonated diaphragm of the nickel-hydrogen battery is as follows:

[0122] ① Preparation of sulfonated polypropylene-polyethylene composite fiber tow (sulfonated ES composite fiber tow)

[0123] Process according to the method of step 1 of Example 1, but the sulfonation process and the dilute sulfuric acid cleaning process are different: the concentration of concentrated sulfuric acid is 95%, the temperature of concentrated sulfuric acid is 116 ° C, and the holding time is 8 minutes; the concentration of dilute sulfuric acid is 30 %, and the temperature of dilute sulfuric acid is 80 ° C. ;

[0124] ② Preparation of sulfonated polypropylene fiber tow (sulfonated PP fiber tow)

[0125] Process according to step 1 of Example 1, but the sulfonation process and dilute sulfuric acid cleaning process used are different: the concentration of concentrated sulfuric a...

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Abstract

The invention relates to non-woven fabric for manufacturing an Ni-MH battery sulfonated membrane, an Ni-MH battery sulfonated membrane and a manufacturing method thereof. The method comprises the following steps that: 1. hot concentrated sulfuric acid is used to singly sulfonate an ES composite filter bundle and a polypropylene fiber bundle (PP fiber bundle), and dilute sulphuric acid and water are used to clean the bundles; 2. the sulfonated fiber bundles are cut into raw material short fibers; 3. the raw material short fibers are made into a fiber mesh through a wet papermaking machine, adhered and formed into semi-finished product non-woven base material fabric by hot melting; 4. the semi-finished product non-woven base material fabric is compounded and rolled by hot melting, formed toprepare the non-woven fabric for manufacturing the Ni-MH battery sulfonated membrane by hot melting, finished and trimmed, to prepare the Ni-MH battery sulfonated membrane. From the raw material fiber bundle sulfonation to finished product manufacturing, the invention has the advantages of simple process, easy control, no large-sized equipment needed and easy industrial implementation, and solvesthe technical difficult problems of easy breakage and easy damage of the traditional non-woven base material fabric sulfonation.

Description

technical field [0001] The invention belongs to rechargeable battery diaphragm material and its manufacturing technology, and relates to a non-woven fabric for making sulfonated diaphragm of nickel-hydrogen battery, sulfonated diaphragm of nickel-hydrogen battery and its manufacturing method, especially relates to a kind of non-woven fabric for making high-capacity nickel A non-woven fabric for a hydrogen battery sulfonated diaphragm, a high-capacity nickel-hydrogen battery sulfonated diaphragm and a manufacturing method thereof. Background technique [0002] As countries around the world pay more attention to environmental protection, Ni-MH batteries have been rapidly developed as a pollution-free green mobile power source. In recent years, due to the increasing demand for oil resource consumption, the problems of rising oil prices and increasing environmental pollution caused by fuel vehicles have been highlighted. Developed countries and the Chinese government have introd...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D21H13/14H01M2/14H01M50/403H01M50/44
CPCY02E60/12Y02E60/10
Inventor 孔德康孔军堵宇峰
Owner CHANGZHOU KANGJIE SPECIAL NON WOVEN FABRICS CO LTD
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