Preparation raw material for rubber soft core of rubber pipe

Abstract

The invention discloses a preparation raw material for a rubber soft core of a rubber pipe. The preparation raw material is characterized by comprising the following components in part by mass: 100 parts of ethylene propylene diene monomer (EPDM) rubber, 5 to 10 parts of zinc oxide, 0.5 to 2 parts of stearic acid, 1 to 3 parts of antioxidant RD, 0.5 to 2.5 parts of antioxidant 4010NA, 2 to 4 parts of paraffin, 1 to 4 parts of tackifier A-90, 40 to 100 parts of paraffin oil 2280, 40 to 80 parts of carbon black N550, 40 to 80 parts of carbon black N774, 1 to 3.5 parts of dicumyl peroxide (DCP), 2 to 4 parts of accelerator triallyl isocyanurate (TAIC) and 0.1 to 0.5 part of accelerator tetrabenzylthiuram disulfide (TBzTD). The special preparation raw material has the advantages that 1) the rubber material has high ageing resistance, so that the service life of the soft core is greatly prolonged; 2) the rubber material is tightly bonded with a steel wire and is not separated; and 3) the soft core has high extrusion processing property and dimensional stability, and product dimensions are easy to ensure.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a raw material for preparing soft rubber cores for rubber hoses. Background technique [0002] Rubber hoses have been more and more widely used in various industries of the national economy. The production methods of rubber hoses mainly include coreless method, hard core method and soft core method. The rubber hose produced by the coreless method has poor dimensional stability. Smaller products; the production process of the hard core method has the disadvantages of continuous production and low production efficiency; the soft core method has the advantages of stable product size, good adhesion of each layer of the hose, and continuous production. main mode of production. Contents of the invention [0003] Due to the different soft core materials, the service life of the soft core of each manufacturer varies from a dozen times to dozens of times. This technology is ...

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Problems solved by technology

[0002] Rubber hoses have been more and more widely used in various industries of the national economy. The production methods of rubber hoses mainly include coreless method, hard core method and soft core method. The rubber hose produced by the coreless method has poor dimensional stability. Smaller products; the production process of the hard core method has the disadvantages of continuous production and low production efficiency; the soft core method has the advantages of stable product size, good adhesion of each layer of the hose, and continuous production. main mode of production

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