Material for anti-seepage rubber layer of inner tube of air conditioning hose and method for preparing same

Abstract

The invention discloses a material for an anti-seepage rubber layer of an inner tube of an air conditioning hose and a method for preparing the same. The material comprises the following components in part by mass: 100 parts of epichlorohydrin rubber, 20 to 50 parts of PVC1300-2700, 10 to 20 parts of stabilizer, 5 to 15 parts of anti-aging agent, 4 to 8 parts of phenolic resin, 2 to 8 parts of barium / tin stabilizer, 30 to 50 parts of carbon black, 5 to 15 parts of talcpowder, 4 to 10 parts of acid acceptor, 1 to 5 parts of cross-linking agent, 4 to 8 parts of adhesive and 1 to 4 parts of vulcanizing agent. The method comprises the following steps of: placing the PVC and the components except the cross-linking agent and the adhesive in an internal mixer and plasticating the components for 8 to 16 minutes at the temperature of between 150 and 160 DEG C; placing the materials in an open mill, adding the cross-linking agent and the adhesive into the materials under the condition that the roller temperature is less than or equal to 60 DEG C, allowing the mixture to pass through the roller for 3 to 4 times in small thickness, triangularly packaging the mixture for 5 to 6 times and discharging sheets. The rubber material provided by the formula of the invention has the characteristics of freon resistance, novel refrigerant resistance, hot oil resistance, aging resistance and the like; and meanwhile, the process is simple and the manufacturing cost is low.

Description

technical field [0001] The invention relates to a special rubber and a preparation method thereof, in particular to a rubber material especially suitable for making an anti-seepage rubber layer of an inner tube of an air-conditioning hose and a preparation method of the material. Background technique [0002] Air-conditioning hoses usually include an inner nylon layer, an inner tube anti-seepage rubber layer, a reinforcement layer, and an appearance rubber layer. Due to the working conditions of the air conditioner, the ideal air conditioner hose must have the characteristics of penetration resistance, heat aging resistance, hot water resistance, moisture permeability resistance, heat resistance to PAG oil and mineral oil, and good flexibility. The anti-seepage adhesive layer material of the inner pipe plays a decisive role in this. The current anti-seepage rubber layer materials of the inner pipe include chlorosulfonated polyethylene rubber, nitrile rubber, and chloroether...

AI Technical Summary

Problems solved by technology

For example, chlorosulfonated polyethylene rubber and nitrile rubber have high gas permeability, while chloroether rubber has low gas permeability, but it not only has poor oil resistance, but also has high cost.

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