Refrigerant-resistant adhesive and preparation method thereof, refrigerant-resistant soft composite material and preparation method thereof

A composite material, refrigerant-resistant technology, applied in the direction of adhesives, adhesive types, oil/grease/wax adhesives, etc. Refrigerant resistance and other issues, to achieve the effect of outstanding refrigerant performance, low weight loss rate, and not easy to corrode

Active Publication Date: 2019-12-31
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common soft composite material products on the market do not have the performance of refrigerant resistance. During the refrigerant resistance test, delamination, foaming and other undesirable phenomena occur. After the test, the weight loss rate is high and the performance retention rate is low, which cannot meet the refrigerant resistance motor. requirements for use
[0004] The heat resistance, water resistance, acid and alkali resistance, and refrigerant resistance of soft composite materials have a lot to do with the properties of the adhesive used. In view of the fact that the current common adhesives and soft composite materials cannot meet the application requirements of refrigerant-resistant motors, research is urgently needed A refrigerant-resistant adhesive and a refrigerant-resistant soft composite material suitable for various cold media such as R22, R123, R134a and R410a

Method used

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  • Refrigerant-resistant adhesive and preparation method thereof, refrigerant-resistant soft composite material and preparation method thereof
  • Refrigerant-resistant adhesive and preparation method thereof, refrigerant-resistant soft composite material and preparation method thereof
  • Refrigerant-resistant adhesive and preparation method thereof, refrigerant-resistant soft composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A refrigerant-resistant adhesive of the present invention is mainly prepared by mixing modified epoxy glue and polyurethane glue with a mass ratio of 0.4:1, wherein the modified epoxy glue is mainly composed of 28kg tung oil, 11kg maleic anhydride, Prepared from 7.5kg bismaleimide, 10kg E-44 epoxy resin, 13kg F-51 epoxy resin, 30kg acetone and 0.5kg DMP-30.

[0045] The preparation method of the refrigerant-resistant adhesive of the present embodiment may further comprise the steps:

[0046] (1) Heat 28kg of tung oil to 100°C and vacuumize for 1h, then add 11kg of maleic anhydride, react at 150°C for 1.5h, add 7.5kg of bismaleimide, and cool down to 100°C after the reaction is uniform , add 10kgE-44 epoxy resin and 13kgF-51 epoxy resin; when the temperature drops to 60°C, add 30kg of acetone, and when the temperature drops to 35°C, add 0.5kgDMP-30, and stir well to make a modified epoxy glue ;

[0047] (2) Prepare polyurethane glue with LOCTITE LIOFOL LA 2716 and LOCT...

Embodiment 2

[0056] A refrigerant-resistant adhesive of the present invention is mainly prepared by mixing modified epoxy glue and polyurethane glue with a mass ratio of 0.35:1, wherein the modified epoxy glue is mainly composed of 22kg dehydrated castor oil, 8kg maleic acid Anhydride, 11kg bismaleimide, 15kg E-20 epoxy resin, 11kg F-44 epoxy resin, 32.4kg ethyl acetate and 0.6kg 2-methylimidazole.

[0057] The preparation method of the refrigerant-resistant adhesive of the present embodiment may further comprise the steps:

[0058] (1) Heat 22kg of dehydrated castor oil to 110°C and vacuumize for 1h, then add 8kg of maleic anhydride at a temperature of 60°C, react for 1h when heated to 140°C, and add 11kg of bismaleimide After the reaction is uniform, cool down to 100°C, add 15kg E-20 epoxy resin and 11kg F-44 epoxy resin; when the temperature drops to 75°C, add 32.4kg ethyl acetate; when the temperature drops to 35°C, add 0.6 kg2-methylimidazole, fully stirred evenly to prepare modified...

Embodiment 3

[0068] A kind of refrigerant-resistant adhesive of the present invention is mainly prepared by mixing modified epoxy glue and polyurethane glue with a mass ratio of 0.5:1, wherein the modified epoxy glue is mainly composed of 22kg dehydrated castor oil, 6.2kg maleic butene It is prepared from dianhydride, 2.5kg phthalic anhydride, 5.5kg trimellitic anhydride, 8.2kg caprolactam, 20kg AG-80 epoxy resin, 35.3kg acetone and 0.3kg triethanolamine.

[0069] The preparation method of the refrigerant-resistant adhesive of the present embodiment may further comprise the steps:

[0070] (1) Heat 22kg of dehydrated castor oil to 110°C and vacuumize for 1h, add 6.2kg of maleic anhydride, 2.5kg of phthalic anhydride, and 5.5kg of trimellitic anhydride at 160°C, and react at 180°C for 2h , add 8.2kg caprolactam, cool down to 80°C after the reaction is uniform, add 20kgAG-80 epoxy resin; add 35.3kg acetone when the temperature drops to 60°C; add 0.3kg triethanolamine when the temperature dro...

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Abstract

The invention discloses a refrigerant-resistant adhesive which is mainly prepared by mixing modified epoxy glue and polyurethane glue in a mass ratio of (0.01:1)-(0.6:1), wherein the modified epoxy glue is mainly prepared from the following raw materials: plant oil, acid anhydride, amide resin, epoxy resin, a solvent and an accelerant. The invention further discloses a preparation method of the refrigerant-resistant adhesive, a refrigerant-resistant soft composite material prepared from the refrigerant-resistant adhesive, and a preparation method of the refrigerant-resistant soft composite material. As the epoxy glue is adopted to modify polyurethane glue to prepare the refrigerant-resistant adhesive, the polyurethane glue of a high thermal resistant grade is adopted as a main body component, and the product thermal resistant grade of UL (Underwriter Laboratories Inc.) certification can be greater than grade 180. The refrigerant-resistant soft composite material disclosed by the invention is free of physical or chemical damage such as layering, bubbling and gumming in the testing and application process, is low in weight loss rate and free of conspicuous change of appearance, and results of refrigerant resistance tests show that properties such as tensile strength and breakdown voltage can be maintained to be greater than 85%.

Description

technical field [0001] The invention belongs to the field of insulating materials, and in particular relates to a refrigerant-resistant adhesive and a preparation method thereof, and a refrigerant-resistant soft composite material and a preparation method thereof. Background technique [0002] Among the types of motors, the refrigerant-resistant motor is a special motor whose operating conditions are very harsh. It needs to be placed in a sealed refrigerant, refrigerating machine oil and other refrigeration media, and work under high pressure and high temperature for a long time. Insulation materials directly bear the alternating action of refrigerant, refrigerating machine oil, temperature difference, pressure difference, and phase transition, and the chemical corrosion is very serious. In order to ensure the service life of the motor, there are strict requirements on the performance of insulation materials for refrigerant resistance. [0003] As one of the important produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J163/00C09J191/00
CPCC08L2201/08C08L2205/025C08L2205/035C09J175/04C08L63/00C08L91/005C08L91/00
Inventor 李正胜孙永鹏陈子荣刘兴隆陈颖曾智
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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