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Motor pouring sealant and preparation method thereof

A potting glue and mixer technology, applied in the field of potting glue, can solve the problems such as the lack of significant performance improvement in mechanical properties, poor thermal conductivity, and low thermal conductivity and dispersion density of silicone potting glue, so as to improve mechanical properties. Material properties, improving thermal conductivity, and the effect of improving cross-linking density

Pending Publication Date: 2022-05-10
醴陵市京渌新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The patent document with the patent application number CN201910390744.1 discloses "A Thermally Conductive Potting Compound for New Energy Automobile Motors", and it is recorded in the specification that "the silicone potting compound has high thermal conductivity, good dispersion and low density. (relatively light), good mechanical properties, suitable for potting high-power motors to maintain stability.” Although the motor potting compound prepared in the above patent documents has certain mechanical strength and thermal conductivity, it is difficult to achieve fast The heat conduction effect, that is, the heat conduction effect is not good, and at the same time, there is no significant performance improvement in mechanical properties, which affects the performance and quality of the prepared motor potting compound

Method used

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  • Motor pouring sealant and preparation method thereof
  • Motor pouring sealant and preparation method thereof
  • Motor pouring sealant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A motor potting glue, comprising the following raw materials in parts by weight: 90-100 parts of linear-terminated vinyl silicone oil, 100 parts of thermally conductive filler, 30 parts of alicyclic epoxy resin, 10 parts of crosslinking agent, 2 parts of catalyst, 4 parts of surfactant, 8 parts of gas phase black and white carbon, 100 parts of water.

[0032] Further, the thermally conductive filler is a mixture of glass fiber, graphite powder and titanium dioxide powder, and the mass ratio of glass fiber, graphite powder and titanium dioxide powder in the thermally conductive filler is 1:2:1.

[0033] Further, the catalyst is a platinum catalyst.

[0034] Further, the crosslinking agent is tetra-n-propyl zirconate.

[0035] Further, the surfactant is vinyltriethoxysilane.

[0036] The present invention also provides a preparation method of motor potting glue, comprising the following steps:

[0037] Step 1: Add surfactant into the thermally conductive filler, ultras...

Embodiment 2

[0045] The motor potting glue provided in this example and its preparation method are roughly the same as those in Example 1, the main difference is that it includes the following raw materials in parts by weight: 95 parts of linear terminal vinyl silicone oil, 110 parts of thermally conductive filler, 35 parts of cycloaliphatic epoxy resin, 12 parts of cross-linking agent, 4 parts of catalyst, 6 parts of surfactant, 10 parts of gas-phase method black and white carbon, 110 parts of water;

[0046] In step 1, ultrasonically mix for 40 minutes, then add water to continue ultrasonic mixing for 35 minutes, and ultrasonically mix with a power of 21w;

[0047] In step 2, the cycloaliphatic epoxy resin was melted at a temperature of 100°C, the speed of the mixer was 520r / min, and the stirring time was 117min;

[0048] In step 3, under the condition of temperature of 87°C, mix material A and material B in a mixer, and degas it by ultrasonic for 7 minutes, the rotation speed of the mix...

Embodiment 3

[0050] A motor potting glue provided in this embodiment and its preparation method are roughly the same as in Embodiment 1, the main difference is that it includes the following raw materials in parts by weight: 100 parts of linear-terminal vinyl silicone oil, 120 parts of thermally conductive filler, 40 parts of cycloaliphatic epoxy resin, 14 parts of crosslinking agent, 6 parts of catalyst, 8 parts of surfactant, 12 parts of gas-phase method black and white carbon, 120 parts of water;

[0051] In step 1, ultrasonically mix for 30-50 minutes, then add water and continue to ultrasonically mix for 40 minutes, and ultrasonically mix with a power of 23w;

[0052] In step 2, the cycloaliphatic epoxy resin is melted at a temperature of 90-110°C, the speed of the mixer is 600r / min, and the stirring time is 20min;

[0053] In step 3, under the condition of temperature of 95°C, mix material A and material B in a mixer, and degas it by ultrasonic for 10 minutes, the rotation speed of t...

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Abstract

The invention relates to the technical field of pouring sealants, in particular to a motor pouring sealant and a preparation method thereof. Comprising the following raw materials in parts by weight: 90-100 parts of linear-chain vinyl-terminated silicone oil, 100-120 parts of heat-conducting filler, 30-40 parts of alicyclic epoxy resin, 10-14 parts of a cross-linking agent, 2-6 parts of a catalyst, 4-8 parts of a surfactant, 8-12 parts of fumed silica and 100-120 parts of water. According to the invention, the heat-conducting filler is added in the preparation process, the heat-conducting material is subjected to surface modification through vinyltriethoxysilane, and then through the linear-chain vinyl-terminated silicone oil and the alicyclic epoxy resin, under the action of the cross-linking agent, the catalyst and the fumed black and white carbon, the cross-linking density in the prepared motor pouring sealant is improved; meanwhile, the added heat conduction material can also effectively improve the heat conduction performance of the prepared motor pouring sealant, so that the motor pouring sealant can quickly realize heat dissipation.

Description

technical field [0001] The invention relates to the technical field of potting glue, in particular to a motor potting glue and a preparation method thereof. Background technique [0002] Potting glue, used for bonding, sealing, potting and coating protection of electronic components. The potting compound is liquid and fluid before it is cured. Only when the potting glue is completely cured can its use value be realized. After curing, it can play the role of waterproof, moisture-proof, dust-proof, insulation, heat conduction, confidentiality, corrosion resistance, temperature resistance, and shock resistance. [0003] The motor potting compound is mainly used to pour and pot the notch end of the motor or the exposed parts, so as to protect the performance of the motor parts and prolong the service life. [0004] The patent document with the patent application number CN201910390744.1 discloses "A Thermally Conductive Potting Glue for New Energy Automobile Motors". (relative...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J163/00C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08L2203/206C08L63/00C08K9/06C08K7/14C08K3/04C08K3/22C08K7/26C08K5/0091
Inventor 张建华
Owner 醴陵市京渌新材料有限公司
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