A kind of hot-melt thermally conductive adhesive for refrigerator or freezer evaporator and its preparation and application

An evaporator and hot-melt technology, which is applied in the field of hot-melt thermally conductive adhesive and its preparation, can solve the problems of uneven cooling of the evaporator, decreased cooling effect, poor thermal conductivity, etc., and achieves good thermal conductivity, less heat loss, Good thermal conductivity

Active Publication Date: 2018-02-06
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal conductivity is poor, resulting in uneven cooling of the evaporator, easy frosting, and reduced cooling effect

Method used

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  • A kind of hot-melt thermally conductive adhesive for refrigerator or freezer evaporator and its preparation and application
  • A kind of hot-melt thermally conductive adhesive for refrigerator or freezer evaporator and its preparation and application
  • A kind of hot-melt thermally conductive adhesive for refrigerator or freezer evaporator and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Hot-melt heat-conducting adhesive for refrigerator or freezer evaporator, containing the following components by weight:

[0042]

[0043]

[0044] The chlorinated butyl rubber is masticated on the open mill, the antioxidant 264 is added during the masticating process, and then the masticated rubber is put into the kneader; the liquid butyl rubber, polyisobutylene, terpene resin, paraffin wax Put the white oil into the kneader; raise the temperature to 130°C, keep it warm for 20 minutes, turn on the kneader, and knead for 1 hour; add graphite, titanate coupling agent NDZ-105, anti-aging agent DFC-34, knead for 30 minutes, and vacuum; When the vacuum degree reaches 0.075MPa, continue kneading for 1 hour to obtain a uniformly dispersed hot-melt heat-conducting adhesive for refrigerator or freezer evaporator.

Embodiment 2

[0046] Hot-melt heat-conducting adhesive for refrigerator or freezer evaporator, containing the following components by weight:

[0047]

[0048]The chlorinated butyl rubber is masticated on an open mill, and antioxidant 1010 and antioxidant 168 are added during the masticating process, and then the masticated rubber is put into the kneader; liquid butyl rubber, polyisobutylene, Put hydrogenated rosin glyceride, paraffin, and white oil into the kneader; raise the temperature to 150°C, keep warm for 15 minutes, turn on the kneader, and knead for 1-2 hours; add graphite, titanate coupling agent NDZ-130, anti-aging agent 2246, Knead for 30 minutes and vacuumize; when the vacuum degree reaches 0.075MPa, continue to knead for 1.5 hours to prepare a uniformly dispersed hot-melt heat-conducting adhesive for refrigerator or freezer evaporator.

Embodiment 3

[0050] Hot-melt heat-conducting adhesive for refrigerator or freezer evaporator, containing the following components by weight:

[0051]

[0052] The chlorinated butyl rubber is masticated on an open mill, and antioxidant 264 and antioxidant 168 are added during the masticating process, and then the masticated rubber is put into the kneader; liquid butyl rubber, polyisobutylene, Put rosin resin, paraffin, white oil, etc. into the kneader; heat up to 140°C, keep warm for 20 minutes, turn on the kneader, and knead for 1.5 hours; add graphite, titanate coupling agent NDZ-105, antioxidant RD, and knead for 30 minutes , vacuum; when the vacuum reaches 0.075MPa, continue kneading for 1.5h to obtain a uniformly dispersed hot-melt heat-conducting adhesive for refrigerator or freezer evaporators.

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Abstract

The invention discloses hot-melt heat-conducting glue for a refrigerator or freezer evaporator and the preparation and application thereof.The hot-melt heat-conducting glue contains, by mass, 10-25 parts of halogenated butyl rubber, 5-10 parts of liquid butyl rubber, 20-30 parts of polyisobutene, 10-20 parts of tackifier, 2-5 parts of paraffin, 5-10 parts of white oil, 1-2 parts of coupling agent, 60-100 parts of heat conduction filler, 1-4 parts of antioxidant and 1-4 parts of antiager.The hot-melt heat-conducting glue has excellent heat conduction property, adhesive property, anti-aging property and anti-corrosion property, reliability is high enough to meet the requirement for long-term use of a refrigerator, and corrosion to metal including copper and aluminum is avoided.Operation can be conducted with automatic equipment, glue application and liner wrapping can be conducted synchronously, and production efficiency is improved greatly; complete bubble-free attaching of an evaporator pipeline and a refrigerator or freezer liner shell can be achieved, heat transfer is quick, heat loss is low, and uniform coldness and clear frost of freezing and cold storage cavities are realized.

Description

technical field [0001] The invention belongs to the field of adhesives for electrical appliances, and in particular relates to a hot-melt heat-conducting adhesive used for evaporators of refrigerators or freezers, a preparation method and application thereof. Background technique [0002] The evaporator is an important heat exchange component of the refrigerator refrigeration system. The low-temperature condensed "liquid" passes through the evaporator to exchange heat with the outside air, and the "gas" absorbs heat to achieve the cooling effect. The cooling speed and durability of the evaporator are the main signs of the advanced nature of the refrigerator. Most of the refrigerator freezers sold in the market use multi-heat heat exchange layer evaporators for refrigeration. The evaporator structure can be divided into steel wire coil type and aluminum plate coil type, among which aluminum plate coil type evaporators are more popular. The aluminum plate plate type is to buc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/20C09J123/28C09J123/22C09J145/00C09J193/04C09J11/04C09J11/08F25D19/00
CPCC08K2201/003C08K2201/014C08L2205/025C08L2205/035C09J11/04C09J11/08C09J123/22F25D19/00C08L23/283C08L23/22C08L45/00C08L91/06C08K13/02C08K3/04C08L93/04
Inventor 胡继文李登峰涂园园林树东廖乾勇顾云智
Owner 国科广化(南雄)新材料研究院有限公司
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