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Sealing material and preparation method thereof

A sealing material and flame retardant technology, applied in the field of materials, can solve the problems of high cost, poor thermal conductivity, low cost, etc., and achieve the effects of strong oxidation resistance, good stability, and high acid and alkali resistance.

Inactive Publication Date: 2018-02-06
上海良亿新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor thermal conductivity and high cost in the prior art, the object of the present invention is to provide a sealing material, which can be used for the sealing of lithium batteries in new energy vehicles, has good sealing performance, good heat transfer effect, and is resistant to oxidation. Strong capability and low cost

Method used

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  • Sealing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] S1, weigh 40g methyl vinyl silicone rubber raw rubber, 10g hydroxypolysiloxane, 10g white carbon black, 20g antimony trioxide, 5g aluminum nitride, 1g nano-alumina, 1g nano-magnesia, 0.1g paraffin and 0.1 g of sulfur;

[0030] S2, take the raw silicone rubber, hydroxy polysiloxane, white carbon black, antimony trioxide, aluminum nitride, nano-alumina, and nano-magnesia in S1, and bake in a 40°C drying room for 40 minutes, and the system Bake until soft, cut the rubber into small pieces, stir and prolong the heating for 1 hour to make the system mix evenly, remove the floating matter above the system, and knead at 50°C for 30 minutes to obtain the raw rubber mixture;

[0031] S3, mechanical plastication;

[0032] S4, mixing the material after plasticizing in S3 with the paraffin wax in S1, heating the system temperature to 40°C, and holding time for 40 minutes;

[0033] S5, forming;

[0034] S6, taking the molded material of S5, adding sulfur in S1, heating the system...

Embodiment 2

[0036] S1, weigh 55g of methyl vinyl silicone rubber raw rubber, 15g of hydroxy polysiloxane, 14g of white carbon black, 20g of aluminum hydroxide, 20g of aluminum nitride, 4g of nano-alumina, 3g of nano-magnesia, 1g of paraffin and 0.5 g bis(2,4-dichlorobenzoyl) peroxide;

[0037] S2, take the raw silicone rubber, hydroxypolysiloxane, white carbon black, aluminum hydroxide, aluminum nitride, nano-alumina, and nano-magnesia in S1, and bake in a drying room at 55°C for 30 minutes, and dry the system Soft, cut the glue into small pieces, add 0.8g rosin, stir and prolong the heating for 20 minutes to make the system mix evenly, remove the floating matter on the top of the system, add 1g pine tar to further evaporate water, keep warm for 10 minutes, and knead at 70°C In 20 minutes, the original gum mixture was obtained;

[0038] S3, heat plasticizing, the temperature is 50 ℃;

[0039] S4, mixing the material after plasticizing in S3 with the paraffin wax in S1, heating the syste...

Embodiment 3

[0043] S1, weigh 66g methyl vinyl silicone rubber raw rubber, 20g hydroxypolysiloxane, 23g white carbon black, 25g aluminum hydroxide, 30g aluminum nitride, 6g nano-alumina, 6g nano-magnesia, 2g paraffin and 2g 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane;

[0044] S2, take the raw silicone rubber, hydroxypolysiloxane, white carbon black, aluminum hydroxide, aluminum nitride, nano-alumina, and nano-magnesia in S1, and bake them in a drying room at 40°C for 40 minutes. After softening, cut the glue into small pieces, add 2g rosin, stir and prolong the heating for 10 minutes to make the system evenly mixed, remove the floating matter above the system, add 2g pine tar to further evaporate water, keep warm for 10 minutes, and knead at 60°C 30 minutes to obtain the raw gum mixture;

[0045] S3, thermal plasticizing, the temperature is 70°C;

[0046] S4, mixing the material after plasticizing in S3 with the paraffin wax in S1, heating the system temperature to 40°C, and holding ti...

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Abstract

The invention discloses a sealing material and a preparation method thereof. The sealing material is prepared from the following raw materials in parts by weight: 40 to 66 parts of raw silicon rubber,10 to 20 parts of hydroxide polysiloxane, 10 to 23 parts of white carbon black, 20 to 30 parts of fire retardant, 5 to 30 parts of aluminum nitride, 1 to 6 parts of nanometer aluminum oxide, 1 to 6 parts of nanometer magnesia, 0.1 to 2 parts of paraffin and 0.1 to 2 parts of sulfurizing reagent. The sealing material is prepared by mixing, plastifying, milling, molding and vulcanizing in sequence.The sealing material disclosed by the invention has the advantages of high sealing performance, high flame-retardant level, high acid and alkali resistance, high stability and high oxidization resistance, particularly has high insulating performance and heat conductivity, has longer service life, does not deteriorate after long-time storage, and is safe and nontoxic to human body. The sealing material provided by the invention has the advantages of low price and environmental friendliness; the preparation method of the sealing material is simple, and has high operability.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a sealing material for a lithium battery box of a new energy electric vehicle and a preparation method for the sealing material. Background technique [0002] With the large-scale production of new energy electric vehicles, lithium batteries have been widely used due to their excellent performance. The power battery pack composed of lithium batteries is a major core of electric vehicles. The heat conduction, insulation, vibration reduction, and waterproof sealing of the battery pack directly affect the safety of electric vehicles. According to the load requirements of electric vehicles, multiple single batteries or super capacitors are connected in series and parallel to form a module, and then multiple modules are connected in series and parallel to form a battery pack with a certain voltage and capacity, which is placed inside a sealed box to form a battery pack. There are s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08K13/02C08K3/36C08K3/22C08K3/06C08K3/28
CPCC08K2201/011C08K2201/014C08L83/04C08L2201/02C08L2201/08C08L2203/206C08L2205/02C08L2205/03C08L83/06C08K13/02C08K3/36C08K3/2279C08K2003/282C08K2003/2227C08K2003/222
Inventor 赵辉李彩琴
Owner 上海良亿新能源科技有限公司
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