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Battery diaphragm master batch on basis of modified resin and method for preparing battery diaphragm master batch

A technology for modifying resin and battery separator, applied in the field of battery separator masterbatch based on modified resin and its preparation field, can solve the problems of unsatisfactory mechanical properties, poor performance of battery separator masterbatch, etc., and achieve excellent mechanical properties, The effect of reasonable proportion and broad market prospects

Inactive Publication Date: 2019-01-04
张玉锦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing battery separators have defects to varying degrees. The reason is that the performance of the masterbatch of the battery separator is not good, especially in terms of mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the embodiment of the present invention, a battery separator masterbatch based on modified resin includes the following raw materials in parts by weight: 52 parts of polyurethane resin, 10 parts of Ziyun extract, 21 parts of colloidal silicon dioxide, 3 parts of glycerin, 5 parts of fluorite powder, 1 part of polydimethyldiallylammonium chloride, 0.5 part of lubricant.

[0024] The preparation method of the Ziyun extract is as follows: clean the picked Ziyun flower, remove the sundries and rotten parts, put it in the still, add an appropriate amount of water to carry out distillation, collect the distillate, add to the distillate Sodium chloride, fully stirred, stand still, separate the oil, add the separated oil into the saturated sodium chloride solution again, fully stir, let stand, separate the oil again to obtain the purple jade extract; the lubricant It is made by mixing fatty acid amides and carboxylic acids in a weight ratio of 3:2.

[0025] The preparation ...

Embodiment 2

[0033] In the embodiment of the present invention, a modified resin-based battery separator masterbatch includes the following raw materials in parts by weight: 57 parts of polyurethane resin, 13 parts of Ziyun extract, 26 parts of colloidal silicon dioxide, 4 parts of glycerin, 7 parts of fluorite powder, 1.5 parts of polydimethyldiallylammonium chloride, and 0.7 parts of lubricant.

[0034] The preparation method of the Ziyun extract is as follows: clean the picked Ziyun flower, remove the sundries and rotten parts, put it in the still, add an appropriate amount of water to carry out distillation, collect the distillate, add to the distillate Sodium chloride, fully stirred, stand still, separate the oil, add the separated oil into the saturated sodium chloride solution again, fully stir, let stand, separate the oil again to obtain the purple jade extract; the lubricant It is made by mixing fatty acid amides and carboxylic acids in a weight ratio of 3:2.

[0035] The prepara...

Embodiment 3

[0043] In the embodiment of the present invention, a battery separator masterbatch based on modified resin includes the following raw materials in parts by weight: 59 parts of polyurethane resin, 14 parts of Ziyun extract, 29 parts of colloidal silicon dioxide, 5 parts of glycerin, 8 parts of fluorite powder, 3 parts of polydimethyldiallylammonium chloride, 1.1 parts of lubricant.

[0044] The preparation method of the Ziyun extract is as follows: clean the picked Ziyun flower, remove the sundries and rotten parts, put it in the still, add an appropriate amount of water to carry out distillation, collect the distillate, add to the distillate Sodium chloride, fully stirred, stand still, separate the oil, add the separated oil into the saturated sodium chloride solution again, fully stir, let stand, separate the oil again to obtain the purple jade extract; the lubricant It is made by mixing fatty acid amides and carboxylic acids in a weight ratio of 3:2.

[0045] The preparatio...

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PUM

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Abstract

The invention discloses battery diaphragm master batch on the basis of modified resin. The battery diaphragm master batch comprises, by weight, 52-67 parts of polyurethane resin, 10-18 parts of astragalus sinicus extract, 21-35 parts of colloidal silicon dioxide, 3-7 parts of glycerin, 5-11 parts of fluorite powder, 1-4 parts of poly-dimethyl diallyl ammonium chloride and 0.5-1.6 parts of lubricants. The battery diaphragm master batch has the advantages that components in the battery diaphragm master batch are reasonable in proportion, the modified polyurethane resin is used as a main materialfor the battery diaphragm master batch and is supplemented by various auxiliaries to prepare the battery diaphragm master batch, and accordingly the battery diaphragm master batch is excellent in mechanical property; the quality of finished products can be effectively enhanced when the battery diaphragm master batch is used as master batch for battery diaphragms, and the battery diaphragm masterbatch has a broad market prospect and an extremely high application value.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to a modified resin-based battery diaphragm masterbatch and a preparation method thereof. Background technique [0002] In the structure of lithium batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. A separator with excellent performance plays an important role in improving the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery, prevent the two electrodes from contacting and short circuit, and also have the function of allowing electrolyte ions to pass through. The separator material is non-conductive, and its physical and chemical properties have a great influence on the performance of the batter...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L39/00C08K3/36C08K5/053C08K5/00C08K5/20C08K13/02C08J5/18
CPCC08J5/18C08J2375/04C08J2439/00C08K3/36C08K5/00C08K5/053C08K5/20C08K13/02
Inventor 张玉锦
Owner 张玉锦