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Preparation method of PVC battery baffle plate special resin

A battery separator, polyvinyl chloride technology, applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problems that cannot meet the requirements

Inactive Publication Date: 2003-04-30
上海天原集团天原化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyvinyl chloride resin used to prepare sintered battery separators requires fine and uniform particles, and its average particle size should be below 40μ. The polyvinyl chloride resins in the world have not been able to meet the requirements due to failure to adopt a suitable production process. Therefore, battery separator manufacturers, especially separator manufacturers, urgently require PVC manufacturers to research and develop new production methods to prepare high-quality Special resin for separator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 14 kg of vinyl chloride monomer, 0.056 kg of diethylhexyl peroxydicarbonate, 0.007 kg of lauryl peroxide, 0.0196 kg of polyvinyl alcohol, hydroxypropyl methylcellulose and polypeptide polymer, 0.056 kg of sodium bicarbonate , 0.014 kg of EDTA disodium and 25.2 kg of water are added to the polymerization kettle, and there are 2 baffles in the kettle, the stirring speed is 360 rpm, and the temperature is 58 ° C. After reacting for 6 to 8 hours, add 0.028 kg of acetone amine Based on thiourea, the aqueous suspension of vinyl chloride can be obtained, and then purified by conventional methods to remove unreacted vinyl chloride monomer, centrifugal dehydration and drying to obtain the finished product. The obtained finished product was tested according to the GB5761-93 standard, and the results are shown in Table 1.

Embodiment 2

[0023] 14 kg vinyl chloride monomer, 0.056 kg diethylhexyl peroxydicarbonate, 0.007 lauryl peroxide, 0.017 kg hydroxypropyl methylcellulose and hydroxypropyl cellulose, 0.056 kg sodium bicarbonate, 0.014 Add one kilogram of disodium EDTA and 25.2 kilograms of water into the polymerization kettle, set 2 baffles in the kettle, stir at 360 rpm, and react for 6 to 8 hours at a temperature of 58°C, add 0.028 kilograms of acetone amine sulfide urea, the aqueous suspension of vinyl chloride can be obtained, and then purified by conventional methods to remove unreacted vinyl chloride monomer, centrifugal dehydration and drying to obtain the finished product. The obtained finished product was tested according to the GB5761-93 standard, and the results are shown in Table 1.

Embodiment 3

[0025] 14 kg of vinyl chloride monomer, 0.056 kg of diethylhexyl peroxydicarbonate, 0.007 kg of lauryl peroxide, 0.0196 kg of polyvinyl alcohol and polypeptide polymer, 0.056 kg of sodium bicarbonate, 0.014 kg of disodium EDTA and 25.2 kg Put 1 kg of water into the polymerization kettle, set 2 baffles in the kettle, stir at 360 rpm, and react for 6 to 8 hours at a temperature of 58°C, add 0.028 kg of acetone thiosemicarbazone to obtain chlorine The aqueous suspension of ethylene is then purified by conventional methods to remove unreacted vinyl chloride monomers, and is centrifugally dehydrated and dried to obtain the finished product. The obtained finished product was tested according to the GB5761-93 standard, and the results are shown in Table 1.

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PUM

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Abstract

A process for preparing the special resin used for polyvinyl chloride partion of accumulator includes such steps as adding vinyl chloride, trigger, disperser, assistant and water to polymerizing reactor, reaction at 40-70 deg.C for 3-8 hr, adding terminating agent to obtain aqueous suspension of vinylchloride and purifying. Its advantages are fine and uniform granularity (20-40 micron), loose structure, 15-25 g / 100g of oil absorbency and 0.4-0.55 g / ml of apparent density.

Description

technical field [0001] The present invention relates to a material for battery separators, in particular to a polyvinyl chloride (PVC) battery separator. Background technique [0002] Battery separators are widely used in chemical batteries in various sectors of the national economy, and the prosperity of its main user—the automobile transportation industry has led to the rapid development of the battery industry. The separator is an important component of the battery, and its quality has a great impact on the battery's dynamic performance, capacity, life, and self-discharge. Through the continuous improvement of the process formula, the separator has also developed from the wooden separator in the 1930s to the rubber separator, and then evolved to the current general-purpose sintered polyvinyl chloride (PVC) battery separator. [0003] The performance of the polyvinyl chloride resin used to prepare the sintered battery separator will directly determine the microporous stru...

Claims

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Application Information

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IPC IPC(8): C08F114/06H01M2/16
CPCY02E60/12Y02E60/10
Inventor 赵铭生陈肖勤李志云
Owner 上海天原集团天原化工有限公司
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