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Mica composite material of internally-increased short fiber for new energy automobile and preparation process of mica composite material

A technology for new energy vehicles and composite materials, which is applied in the field of mica composite materials and preparation processes for new energy vehicles with inner short fibers, can solve problems such as low electrical strength of mica boards, and achieve high consistency of structural strength and electrical strength, The effect of improving structural strength and high degree of integration

Active Publication Date: 2022-03-11
浙江荣泰电工器材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low electrical strength of the mica board existing in the related technical problems, the application provides a mica composite material and a preparation process of internally shortened fibers for new energy vehicles

Method used

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  • Mica composite material of internally-increased short fiber for new energy automobile and preparation process of mica composite material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0051] Preparation example 1, preparing modified mica powder, modified mica powder is prepared from the following raw materials in parts by weight:

[0052] 0.60kg coarse grade mica, 1.80kg fine grade mica, 0.2kg tris hydrochloride, 0.04kg sodium hydroxide, 0.1kg dopamine hydrochloride.

[0053] The preparation of modified mica powder comprises the following steps:

[0054] b1, rinse the mica powder with deionized water, dry, and use a ball mill to grind the mica powder into coarse-grained mica of 250-550um and fine-grained mica of 74-150um;

[0055] b2, with 0.04kg sodium hydroxide and 0.2kg tris hydrochloride configuration pH is the tris hydrochloride buffer solution of 8.5, adds 0.1kg dopamine hydrochloride, is configured as dopamine solution, and 0.60 Pour kg of coarse-grained mica and 1.80 kg of fine-grained mica into the dopamine solution, stir with a high-speed mixer for 7 hours to prepare modified mica, take out the prepared modified mica, and dry.

preparation example 2

[0056] Preparation example 2, preparing unmodified mica powder, the difference between preparation example 2 and preparation example 1 is: the mica powder is rinsed with deionized water, dried, and the mica powder is ground into 250-550um coarse-grained mica and For 74-150um fine-grained mica, select 0.60kg of coarse-grained mica and 1.80kg of fine-grained mica.

preparation example 3

[0057] Preparation example 3, preparing modified aramid fiber, the modified aramid fiber is prepared from the following raw materials in parts by weight:

[0058] 0.8kg aramid fiber, 0.2kg sodium hydroxide, 0.05kg polyethylene oxide, 0.03kg sodium dodecylbenzenesulfonate.

[0059] The preparation of modified aramid fiber includes the following steps: cutting 0.8kg of aramid fiber to 3-5mm, putting 0.8kg of aramid fiber into 0.2kg of sodium hydroxide solution, adding 0.03kg of sodium dodecylbenzenesulfonate and 0.05kg polyethylene oxide, stir evenly with a mixer, the stirring speed is 100r / min, take it out after reacting for 30min, and dry it.

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Abstract

The invention relates to the field of mica insulating materials, and particularly discloses a mica composite material of internally-increased short fibers for a new energy automobile and a preparation process. The mica composite material comprises 18-26 parts of modified mica powder, 6-12 parts of an adhesive, 2-8 parts of modified ceramic powder and 3-5 parts of modified aramid fibers; the preparation method comprises the following steps: adding the adhesive into the modified mica powder, the modified ceramic powder and the modified aramid fiber, uniformly mixing, injecting into a three-dimensional mold, stirring, heating and forming. The mica composite material of the internally-increased short fiber for the new energy automobile can be used for battery protection of the new energy automobile, and has the advantages of good compatibility of mica and a reinforcing material and high mechanical strength; in addition, the preparation method provided by the invention has the advantages that the prepared special-shaped three-dimensional mica is integrally formed, the electrical insulation effects of all points of the prepared special-shaped three-dimensional mica are kept consistent, and the electrical strength is high.

Description

technical field [0001] This application relates to the field of mica composite materials, more specifically, it relates to a kind of mica composite material and preparation process of internally shortened fibers for new energy vehicles. Background technique [0002] Insulating material is the material that isolates the charged body from other parts in electrical equipment. It is an important guarantee for the long-term safe operation of electrical products, and it is also a key material that directly affects the advanced level of technical indicators of electrical products. Mica is a special sheet silicate mineral. Its crystal structure is a lamellar structure composed of two layers of silicon-oxygen tetrahedron sandwiching a layer of aluminum-oxygen octahedron. This structure determines its It has extremely high electrical insulation, and at the same time, it also has the characteristics of good peelability, chemical stability, reducibility and the ability to maintain the a...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L51/10C08L77/10C08L61/32C08K9/08C08K3/34
CPCC08L63/00C08L2205/16C08K2201/014C08K2201/005C08L51/10C08L77/10C08L61/32C08K9/08C08K3/34
Inventor 黄静周培学孙虎
Owner 浙江荣泰电工器材股份有限公司