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A kind of polyurethane potting glue and preparation method thereof

A potting glue and polyurethane technology, applied in the field of polyurethane potting glue and its preparation, can solve the problems of weak metal adhesion, long curing time, poor transparency, etc., achieve fast curing speed, reduce construction process requirements, and be easy to operate. Effect

Active Publication Date: 2017-12-01
BEIJING JINWEINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use of existing potting adhesives, there are often problems such as high hardness, high viscosity, poor transparency after curing, many bubbles, poor insulation, weak adhesion to metal, and long curing time.

Method used

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  • A kind of polyurethane potting glue and preparation method thereof
  • A kind of polyurethane potting glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present invention will be further described below in conjunction with the examples, which are not limited to the present invention.

[0030] The following examples are all in weight percent.

[0031] Embodiment 1 A kind of polyurethane potting glue (A component does not contain plasticizer)

[0032] A polyurethane potting glue, comprising the steps of:

[0033] (1) Component A is made from the following components by weight:

[0034] Add 90.5 parts of castor oil, 2 parts of 1,4-butanediol, 3 parts of triethanolamine, 0.5 parts of antioxidant 1010, 0.5 parts of UV-328, and 0.5 parts of light stabilizer 622 into the reaction kettle. Stir under low pressure, vacuum dehydrate and degas for 3 hours, cool down to 10-40°C, add 2 parts of organic rare metal catalyst PD, 0.5 part of defoamer BYK1794, 0.5 part of coupling agent PN-792, stir evenly, and discharge.

[0035] (2) B component is made from the following components by weight:

[0036] Add 55 parts of dioctyl pht...

Embodiment 2

[0038] Embodiment 2 A kind of polyurethane potting glue (A component does not contain plasticizer)

[0039] A polyurethane potting glue, comprising the steps of:

[0040] (1) Component A is made from the following components by weight:

[0041] Add 90.5 parts of castor oil, 2 parts of 1,4-butanediol, 3 parts of triethanolamine, 0.5 parts of antioxidant 1010, 0.5 parts of UV-328, and 0.5 parts of light stabilizer 622 into the reaction kettle. Stir at ℃, vacuumize and dehydrate and degas for 3.5 hours, cool down to 10-40℃, add 2 parts of organic bismuth zinc catalyst 1619, 0.2 part of defoamer BYK 141, 0.3 part of DeFom6500, 0.5 part of coupling agent KH-550, and stir Uniform, discharge.

[0042] (2) B component is made from the following components by weight:

[0043] Add 52 parts of dioctyl phthalate into the reaction kettle, vacuumize and dehydrate at 80-100°C for 2-3 hours to make the water content <0.05%, drop the temperature to 10-30°C, add 32 parts of toluene diisocyan...

Embodiment 3

[0045] Embodiment 3 A kind of polyurethane potting glue (A component does not contain plasticizer)

[0046] A polyurethane potting glue, comprising the steps of:

[0047] (1) Component A is made from the following components by weight:

[0048]79.5 parts of castor oil, 10 parts of polyoxypropylene glycol (Mn 1000), 2 parts of 1,4-butanediol, 3 parts of trimethylolpropane, 0.5 parts of antioxidant 1010, 0.5 parts of UV-328, light Add 0.5 parts of stabilizer 622 into the reaction kettle, stir at 80-100°C, vacuumize and dehydrate for 4 hours, cool down to 10-40°C, add 3 parts of stannous octoate, 0.5 parts of defoamer BYK1790, coupling agent 0.5 parts of KH-560, stir evenly, and discharge.

[0049] (2) B component is made from the following components by weight:

[0050] Add 61.3 parts of dioctyl phthalate into the reaction kettle, vacuumize and dehydrate at 80-100°C for 2-3 hours to make the water content <0.05%, cool down to 10-30°C, add 20.5 parts of toluene diisocyanate, p...

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Abstract

The invention relates to a polyurethane potting glue, which is composed of component A and component B in a mass ratio of 1:1; wherein, component A is prepared from the following components by weight: 80-100 parts of polymer polyol, 0-5 parts of small molecular alcohol, 0.1-1 part of antioxidant, 0.1-1 part of ultraviolet absorber, 0.1-1 part of light stabilizer, 0.5-8 part of catalyst, 0.1-1 part of defoamer, 0.1 part of coupling agent ~1 part, 0-20 parts of plasticizer; component B is prepared from the following components in parts by weight: 20-50 parts of polyisocyanate and 40-80 parts of plasticizer. The potting compound obtained by the invention has the characteristics of low viscosity, low hardness, few bubbles, can be cured at room temperature, fast curing and easy to operate; the cured product has good oxidation resistance, good metal adhesion and good adhesion. Insulation and moisture resistance.

Description

technical field [0001] The invention relates to a polyurethane potting glue suitable for sealing electronic components and a preparation method thereof. Background technique [0002] With the development of electronic technology, electronic components are developing in the direction of integration and miniaturization. In order to protect electronic components and effectively isolate them from the external environment, it is necessary to use electronic potting glue to pot and seal them. Electronic potting glue can play the role of waterproof, moisture-proof, dust-proof, improve the insulation between internal components and lines, and improve the impact resistance. However, the existing potting adhesives often have problems such as high hardness, high viscosity, poor transparency after curing, many bubbles, poor insulation, weak adhesion to metal, and long curing time during actual use. [0003] In view of this, the present invention proposes a new type of electronic pottin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J11/06C08G18/32C08G18/67C08G18/76C08G18/48C08G18/62C08G18/66
Inventor 谭锦锦王捷
Owner BEIJING JINWEINA TECH CO LTD
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