Yellow outer rubber for bus air conditioner rubber pipes and preparation method thereof

A technology for buses and air conditioners, which is applied in the field of materials, can solve the problems of air conditioner pipe bubbling, low physical properties, and liquid leakage, and achieve the effects of good adhesion, improved permeability, and excellent physical properties

Inactive Publication Date: 2015-05-20
LUOHE LETONE RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional automotive air-conditioning pipes that transport R134a refrigerant generally use EPDM rubber as the main material. At present, there are still difficult technical problems in the bonding of EPDM rubber and copper-plated steel wire. The outer rubber layer of the air-conditioning pipe is light-colored and does not require carbon black reinforcement, resulting in low physical properties, which often cause bubbling, separation and leakage of the air-conditioning pipe during use, which seriously affects the performance of the bus. Service life of air conditioning hose

Method used

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  • Yellow outer rubber for bus air conditioner rubber pipes and preparation method thereof
  • Yellow outer rubber for bus air conditioner rubber pipes and preparation method thereof
  • Yellow outer rubber for bus air conditioner rubber pipes and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The yellow outer rubber used for the air-conditioning rubber hose of the bus transporting R134a refrigerant is composed of the following raw materials in parts by weight: EPDM4640 65-70, natural rubber 30-35, zinc oxide 5-8, stearic acid 1 -3. Antiaging agent RD2-4, coupling agent Si69 1-3, benzidine yellow organic pigment 1-2, polyethylene glycol PEG6000 1-2, adhesive SC211F5-7, white carbon black 40-45, kaolin 15-20, silica powder 20-25, naphthenic oil 20-25, sulfur 1-2, accelerator M 0.2-0.4, vulcanizing agent DCP3-4, accelerator HVA-2 2-3, accelerator CBS 0.5 -1. Anti-scorch agent CTP0.3-0.5.

[0026] The preparation method of the yellow outer layer rubber for the bus air-conditioning rubber hose that transports R134a refrigerant comprises the plasticizing process and mixing process of EPDM rubber and natural rubber blending rubber, and the EPDM rubber and natural rubber are blended Plastic refining process

[0027] The plasticizing process is divided into three s...

Embodiment 2

[0041] The yellow outer rubber used for the air-conditioning rubber hose of the bus transporting R134a refrigerant is composed of the following raw materials in parts by weight: EPDM4640 70kg, natural rubber 30kg, zinc oxide 5kg, stearic acid 1kg, anti-aging agent RD2 kg, coupling agent Si691 kg, benzidine yellow organic pigment 1.2 kg, polyethylene glycol PEG6000 1.5 kg, binder SC211F5 kg, white carbon black 45 kg, kaolin 20 kg, silica powder 20 kg, ring 25 kg of paraffin oil, 1 kg of sulfur, 0.3 kg of accelerator M, 3.2 kg of vulcanizing agent DCP, 22 kg of accelerator HVA-22 kg, 0.8 kg of accelerator CBS, and 0.5 kg of anti-scorch agent CTP.

[0042] The preparation method of the yellow outer rubber for the air-conditioning rubber hose of the bus transporting R134a refrigerant, including the plasticizing process and the mixing process of the blended rubber of EPDM rubber and natural rubber,

[0043] The plasticizing process of the EPDM rubber and natural rubber blend,

[0...

Embodiment 3

[0059] The yellow outer rubber used for the air-conditioning rubber hose of buses transporting R134a refrigerant is composed of the following raw materials in parts by weight: EPDM4640 67kg, natural rubber 34 kg, zinc oxide 6 kg, stearic acid 3 kg, anti-aging agent RD4 kg, coupling agent Si69 3 kg, benzidine yellow organic pigment 2 kg, polyethylene glycol PEG6000 1 kg, adhesive SC211F5 kg, white carbon black 43 kg, kaolin 19 kg, silica powder 24 kg, cyclo 23 kg of paraffin oil, 2 kg of sulfur, 0.2 kg of accelerator M, 4 kg of vulcanizing agent DCP, 3 kg of accelerator HVA-2, 1 kg of accelerator CBS, and 0.5 kg of anti-scorch agent CTP.

[0060] The preparation method of the yellow outer rubber for the air-conditioning rubber hose of the bus transporting R134a refrigerant, including the plasticizing process and the mixing process of the blended rubber of EPDM rubber and natural rubber,

[0061] The plasticizing process of the EPDM rubber and natural rubber blend,

[0062] The...

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Abstract

The invention provides yellow outer rubber for bus air conditioner rubber pipes and a preparation method thereof. The yellow outer rubber is prepared from the following raw materials by a compounding process and a mixing process of blended rubber of ethylene propylene terpolymer and natural rubber: ethylene propylene terpolymer EPDM4640, natural rubber, zinc oxide, stearic acid, antioxidant RD, coupling agent Si69, benzidine yellow organic pigment, polyethylene glycol PEG6000, adhesive SC211F and the like. The yellow outer rubber for bus air conditioner rubber pipe prepared from the material is excellent in physical properties and good in adhesiveness with coppered steel wires, and the physical properties, the weather resistance, the ageing resistance and the permeability resistance on R134a refrigerant of the yellow outer rubber are well perfected.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a yellow outer layer glue for an air-conditioning rubber hose of a bus for transporting R134a refrigerant and a preparation method thereof. Background technique [0002] The field to which the invention belongs is a preparation method of a yellow outer layer rubber compound used for a bus air-conditioning rubber hose for transporting R134a refrigerant. The air-conditioning pipes of buses currently on the market are made of light-colored rubber products and transport R134a refrigerant. R134a refrigerant molecules do not contain chlorine atoms, do not damage the atmospheric ozone layer, and its good safety performance (non-flammable, non-explosive, non-toxic, non-irritating, non-corrosive) and good thermal conductivity, in the air conditioner The refrigeration industry is increasingly widely used, especially in automotive air conditioners. However, since the R134a refrigerati...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L7/00C08L71/02C08K13/02C08K3/22C08K5/09C08K3/36C08K3/34C08K3/06B29B7/28
CPCC08L23/16B29B7/286C08L2205/03
Inventor 蒋利辉
Owner LUOHE LETONE RUBBER
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