Heat-insulating composite material

A technology of composite materials and endothermic fillers, applied in electronic equipment, applications, electrochemical generators, etc., can solve the problems of hard texture, high price, hidden safety hazards, etc. damage effect

Inactive Publication Date: 2020-01-03
3M MATERIAL TECH (HEFEI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current airgel products are very expensive
The general problem of mica sheet products is that the texture is hard and brittle, and there are potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0099] In the present invention, unless otherwise indicated, the reagents used were all commercially available products, which were directly used without further purification treatment. In addition, the "parts" mentioned are "parts by weight".

[0100] testing method

[0101] Thermal insulation test

[0102] Thermal insulation tests were performed on the thermal insulation composite materials prepared in the following Examples and Comparative Examples. Specifically, a heating plate with a length of 1.75 inches and a width of 1.75 inches was fixed vertically relative to a horizontal plane, and its temperature was raised to a constant temperature of 600°C. The thermal insulation composite materials prepared in the following examples and comparative examples were respectively used as sample sheets (the length is 1.75 inches, the width is 1.75 inches, and the specific thickness can be calculated from the data in Table 2 below). The sample sheet was positioned vertically wit...

preparation example 1

[0103] Preparation example 1 (preparation of silicone rubber precursor composition A)

[0104] Vinyl silicone oil (produced by AB Andisil Company; viscosity of 5000 cSt) as crosslinkable silicone oil, hydrogen-containing silicone oil (by AB Andisil Company) as crosslinking agent, Expantrol (which contains 73% by weight) as flame retardant sodium silicate, an aqueous solution of 17% by weight zinc borate and 10% by weight water), 1-ethynyl-1-cyclohexanol (produced by Macklin Corporation) as an inhibitor, platinum catalyst (produced by Herasus Corporation) as a polymerization catalyst ) and the aluminum hydroxide as the dehydration endothermic filler are added in the stirring tank according to the proportioning shown in the following table 1 (the total weight of the obtained silicone rubber precursor composition is 100% by weight), and then The stirring tank was placed in a star mixer (speed mixer), and mixed and stirred at a speed of 1900 rpm for 3 minutes, thereby obtaining a ...

preparation example 2-5

[0105] Preparation Example 2-5 (Preparation of Silicone Rubber Precursor Composition B-E)

[0106] Silicone rubber precursor compositions B-E were prepared in a manner similar to the method described in Preparation Example 1, except that the ratio of each component was changed according to the ratio shown in Table 1 below, so as to obtain a gel-like viscous Silicone rubber precursor compositions of matter B-E.

[0107] The proportioning of the silicone rubber precursor composition A-E in the preparation example 1-5 of table 1 (with the total weight of the silicone rubber precursor composition obtained being 100% by weight)

[0108]

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Abstract

The invention provides a heat-insulating composite material for delaying heat diffusion of an electric vehicle battery. The heat-insulating composite material comprises a silicone rubber layer and aninorganic fiber layer. The heat-insulating composite material prepared according to the technical scheme of the invention has high heat-insulating property and compressibility and can be applied to the electric vehicle battery to reduce thermal runaway of the battery.

Description

technical field [0001] The invention relates to the technical field of electric vehicle batteries, in particular, the invention provides a thermal insulation composite material for delaying thermal diffusion of electric vehicle batteries. Background technique [0002] In recent years, in the global market, especially in the Chinese market, the production and sales of electric vehicles have maintained rapid growth. The electric vehicle industry is heading in a direction of change. Automakers are working on long-range electric vehicles (more than 200 miles on a single charge). This will require EV batteries with greater battery capacity and shorter charging times. The potential high risk brought by the pursuit of the above technical effects is the increase in the failure rate of lithium-ion batteries, and even the phenomenon of battery thermal runaway. [0003] Therefore, the thermal runaway problem of electric vehicle batteries has gradually attracted widespread attention....

Claims

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Application Information

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IPC IPC(8): B32B25/20B32B25/10B32B9/00B32B9/04B32B17/02B32B33/00H01M10/625H01M10/658C08L83/07C08L83/05C08K13/02C08K3/22C08K3/34C08K3/38C08K5/05C04B26/00C04B28/00
CPCB32B5/02B32B25/10B32B25/20B32B33/00B32B2262/10B32B2262/101B32B2262/105B32B2307/304B32B2457/10C04B26/00C04B28/00C08K2003/2227C08K2003/387C08L83/04C08L2205/025H01M10/625H01M10/658C08K13/02C08K3/22C08K3/34C08K3/38C08K5/05C04B14/38C04B22/06Y02E60/10
Inventor 刘婷婷顾少卿孙少敏潘杰赵忠印加里·弗兰西斯·豪沃思赛伦德拉·博吉拉勒·拉索德布兰登·A·巴特林
Owner 3M MATERIAL TECH (HEFEI) CO LTD
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