Temperature variation resistant rubber for heat preservation of air conditioner circulation pipeline

A technology for pipe insulation and air-conditioning circulation, which is applied in the field of temperature-resistant rubber, which can solve the problems of long service life, loss of heat preservation effect, and poor anti-aging performance of air conditioners, and achieve good heat insulation effect, good protection effect, and temperature resistance. The effect of improving performance

Inactive Publication Date: 2018-06-29
HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foam cotton has good thermal insulation effect, but poor anti-aging performance, especially in high temperature or low temperature weather, the drastic temperature change produced by the refrigerant is more likely to accelerate the aging process of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] A temperature-resistant rubber used for heat preservation of air-conditioning circulating pipes. According to parts by mass, the components of the temperature-resistant rubber include: 25 parts of nitrile rubber, 40 parts of EPDM rubber, 21 parts of natural rubber, and carbon black 12 parts, 7 parts high temperature curing agent, 7 parts zinc oxide, 4 parts calcium hydroxide, 3 parts stearic acid, 1 part coupling agent, 2 parts antioxidant, 2 parts vulcanizing agent, 1 part accelerator.

[0020] In this embodiment, the high temperature resistant curing agent is a modified aromatic amine, and the preparation method of the modified aromatic amine is as follows: Put 50 parts of m-phenylenediamine into the reactor according to the mass parts, heat to 47°C, and then add 3 parts Imidazole was added to the reactor, while the temperature in the reactor was raised to 60℃, and the reaction was stirred. Finally, 15 parts of alicyclic amine methylcyclopentadiamine and...

Example Embodiment

[0023] Example 2

[0024] A temperature-resistant rubber used for heat preservation of air-conditioning circulating pipes. According to parts by mass, the components of the temperature-resistant rubber include: 35 parts of nitrile rubber, 60 parts of EPDM rubber, 27 parts of natural rubber, and carbon black 14 parts, 9 parts high temperature curing agent, 11 parts zinc oxide, 6 parts calcium hydroxide, 6 parts stearic acid, 3 parts coupling agent, 5 parts anti-aging agent, 3 parts vulcanizing agent, 2 parts accelerator.

[0025] In this embodiment, the high temperature resistant curing agent is a modified aromatic amine, and the preparation method of the modified aromatic amine is as follows: Put 50 parts of m-phenylenediamine into the reactor according to the mass parts, heat to 50°C, and then add 3 parts Imidazole was added to the reactor, while the temperature in the reactor was raised to 65°C, and the reaction was stirred. Finally, 15 parts of alicyclic amine methylcyclopentadi...

Example Embodiment

[0028] Example 3

[0029] A temperature-resistant rubber used for heat preservation of air-conditioning circulating pipes. According to parts by mass, the components of the temperature-resistant rubber include: 30 parts of nitrile rubber, 50 parts of EPDM rubber, 24 parts of natural rubber, and carbon black 13 parts, 8 parts high temperature curing agent, 9 parts zinc oxide, 5 parts calcium hydroxide, 5 parts stearic acid, 2 parts coupling agent, 4 parts anti-aging agent, 2.5 parts vulcanizing agent, 1.5 parts accelerator.

[0030] In this embodiment, the high temperature resistant curing agent is a modified aromatic amine, and the preparation method of the modified aromatic amine is as follows: put 50 parts of m-phenylenediamine into the reaction kettle according to the mass parts, heat to 48°C, and then add 3 parts Imidazole was added to the reactor, while the temperature in the reactor was increased to 63℃, and the reaction was stirred. Finally, 15 parts of alicyclic amine methy...

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Abstract

The invention relates to the technical field of rubber materials and in particular relates to temperature variation resistant rubber for heat preservation of an air conditioner circulation pipeline. The temperature variation resistant rubber comprises the following components: nitrile rubber, an ethylene-propylene-diene monomer, natural rubber, carbon black, a high temperature resistant curing agent, zinc oxide, calcium hydroxide, stearic acid, a coupling agent, an anti-aging agent, a vulcanizing agent and an accelerant, wherein the high temperature resistant curing agent is modified aromaticamine; the carbon black is selected from carbon black produced from the natural gas as a raw material by using a channel process; the coupling agent is a silane coupling; the anti-aging agent is one of an anti-aging agent RD, an anti-aging agent CPPD (Calcium Pyrophosphate De-Hydrate) and an anti-aging agent DPPD (Diphenyl-Phenylene-Diamine); the vulcanizing agent is selected from dicumyl peroxideor a vulcanizing agent PDM; the accelerant is selected from triallyl isocyanurate. The rubber is capable of replacing foamed cotton as a circulation pipeline heat preservation material, is good in heat preservation effect, is capable of enduring harsh temperature variations, and in addition is excellent in anti-aging property and long in service life.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a temperature-resistant rubber used for heat preservation of air-conditioning circulation pipes. Background technique [0002] Household air conditioners are mainly split-type air conditioners. This type of air conditioner is composed of indoor units, outdoor units, circulation pipes, and power lines. The outdoor unit includes compressors and axial fans. Component composition; the circulation pipeline mainly realizes the refrigeration or heating cycle through the flow of the internal refrigerant. [0003] At present, the circulation pipes on the market mainly use copper pipes. In order to install the heat preservation of the circulation pipes, the pipes will be wrapped with foam cotton, and then the foam cotton will be tightly wrapped with adhesive tape to improve the heat preservation and fastening effect. Foam cotton has good thermal insulation effect, but poor anti-a...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L9/02C08L7/00C08K13/02C08K3/04C08K3/22C08K5/09
CPCC08K2003/2206C08K2003/2296C08L23/16C08L2205/03C08L9/02C08L7/00C08K13/02C08K3/04C08K3/22C08K5/09
Inventor 王虎
Owner HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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