Single-component motor adhesive capable of being stably stored at normal temperature and rapidly cured at medium temperature and preparation method of single-component motor adhesive

An adhesive, one-component technology, applied in the field of adhesives, can solve problems such as increased storage and transportation costs, increased quality risks during use, and impact on product use and promotion, and achieves good storage stability at room temperature and good versatility sexual effect

Pending Publication Date: 2022-05-27
HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing products cannot take into account the stability of room temperature storage and the curing effect at medium temperature at the same time; the existing products can only be stored at low temperature to prolong the shelf life to ensure the use effect and curing effect, resulting in a substantial increase in storage and transportation costs, and a substantial increase in quality risks during use , affecting the use and promotion of the product

Method used

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  • Single-component motor adhesive capable of being stably stored at normal temperature and rapidly cured at medium temperature and preparation method of single-component motor adhesive
  • Single-component motor adhesive capable of being stably stored at normal temperature and rapidly cured at medium temperature and preparation method of single-component motor adhesive
  • Single-component motor adhesive capable of being stably stored at normal temperature and rapidly cured at medium temperature and preparation method of single-component motor adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0034] The present embodiment provides an imidazole copper salt coordination complex, and its preparation process includes the following steps:

[0035] S1, the imidazole, NaHCO 3 It is mixed with distilled water in a weight ratio of 10:35:250, and heated at 80°C to dissolve to obtain a clear, colorless and transparent imidazole solution.

[0036] S2, the same weight of Cu(CH as biimidazole) 3 COO) 2 .H 2 O was dissolved in 10 times the weight of distilled water, slowly added dropwise to the imidazole solution, keeping the water bath boiling, after the dropwise addition, the water bath was heated for 1h, cooled to room temperature, the precipitate was collected, washed, and vacuum dried for 3h to obtain blue powder imidazole Ketone salt coordination complex.

Embodiment 1-2

[0038] The present embodiment provides a biimidazole copper salt coordination complex, and its preparation process includes the following steps:

[0039] S1, add 30 g of biimidazole to 2500 mL of DMF, and heat under reflux to dissolve it completely to obtain a pale yellow biimidazole solution.

[0040] S2, 40 g of Cu (CH 3 COO) 2 .H 2 O was added to 500 mL of DMF to form a solution, which was slowly added dropwise to the biimidazole solution, heated to reflux for 3 h, cooled to room temperature, collected and washed with the precipitate, and dried in vacuum for 3 h to obtain a beige powder of biimidazole copper salt coordination complex.

Embodiment 2-1

[0042] This embodiment provides a one-component motor adhesive, and its raw material composition is shown in Table 1 below:

[0043] Table 1 Example 2-1 Composition table of motor adhesive

[0044]

[0045] The preparation method of the motor adhesive of this embodiment includes the following steps:

[0046] S1, each raw material is weighed according to the composition of the motor adhesive in Table 1.

[0047] S2, stirring the glycidyl ether epoxy resin and the tackifier at 55±5° C. to completely dissolve the materials to obtain a liquid mixture.

[0048] S3, the liquid mixture, curing agent, accelerator and filler are added into the dynamic mixer, and the reaction is stirred at 35±5°C. The process parameters of the stirring reaction are: revolution frequency 15Hz, rotation frequency 15Hz, and stirring reaction time is 35min. Then carry out vacuum defoaming, and the process parameters of vacuum defoaming are: vacuum pressure to -0.09Mpa or more, stirring time 35min, that...

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Abstract

According to the single-component motor adhesive capable of being stably stored at normal temperature and rapidly cured at medium temperature and the preparation method of the single-component motor adhesive, the glycidyl ether epoxy resin, the tackifier, the curing agent, the accelerant and the filler in a specific proportion are subjected to compound reaction, and the single-component motor adhesive integrally has excellent adhesive performance and further has the advantages of being rapidly cured at medium temperature and stably stored at normal temperature.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a single-component motor adhesive that is stable in normal temperature storage and fast-curing at medium temperature and a preparation method thereof. Background technique [0002] The existing one-component epoxy motor adhesive is used for the bonding of the conductor ground of the motor rotor winding, which occupies a major position in the motor insulation system (JP01-304151, 07, 12, 1989), which combines liquid epoxy resin and latent The curing agent is mixed with inorganic filler and / or thixotropic agent to obtain a single-component epoxy resin composition with excellent storage stability. From the examples, the viscosity of this composition changes by about 1.5 times after being stored at room temperature for 3 months , the stability needs to be further improved. [0003] At present, the market products of motor adhesives may be stored at room temperature (0-25°C) for 3-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J11/04C09J11/06C09J11/08C08G59/40
CPCC09J163/00C09J11/04C09J11/06C09J11/08C08G59/4021C08L63/00C08L51/04C08K3/34C08K7/26C08K5/3445
Inventor 李伟红刘胜韩胜利李建平宋晋华李东阳刘城徐叔刚彭惠娴
Owner HUBEI HUITIAN NEW MATERIALS STOCK CO LTD
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