Environment-friendly self-lubricating rubber tube mandrel rubber material and preparation method thereof

Abstract

The invention discloses an environment-friendly self-lubricating rubber tube mandrel rubber material which comprises the following raw materials in parts by weight: 100 parts of a composite material of NBR/PVC alloy and silica gel 110-2, 15-35 parts of a reinforcing agent, 35-70 parts of semi-reinforced carbon black, 1-3 parts of a coupling agent, 5-15 parts of an environment-friendly plasticizer, 2-3 parts of an antioxidant, 2-3 parts of a processing aid, 5-15 parts of a heat-resistant aid, 0.5-2.5 parts of a vulcanizing agent and 2-5 parts of a crosslinking aid, wherein the composite material of the NBR/PVC alloy and the silica gel 110-2 is a mixture of the NBR/PVC alloy and the silica gel 110-2. Meanwhile, the invention also provides a preparation method of the rubber material. A rubber tube prepared from the mandrel rubber material disclosed by the invention conforms to domestic environment-friendly upgrading and European Union ROSH standards, and the DEHP content is low; in the rubber tube production, the core pulling operation efficiency is high, and the scratch rate of an inner layer of the rubber tube is low.

Description

technical field [0001] The invention belongs to the technical field of rubber composite materials, and in particular relates to an environment-friendly self-lubricating rubber hose mandrel rubber material and a preparation method thereof. Background technique [0002] In recent years, due to the continuous expansion of automobile production, the demand for rubber parts for automobiles has soared. If each car uses an average of 10 meters of rubber hose, by 2019, the minimum demand for automobile rubber hoses for new and old car maintenance will reach hundreds of millions of meters. Therefore, only one item of automobile rubber hose parts requires tens of millions of tons of various hose rubber materials , more than one million tons of rubber material for the rubber hose mandrel. [0003] At present, the rubber material of the domestic automobile hose mandrel is mainly nitrile rubber. Although nitrile rubber has good oil resistance and excellent physical properties, when it ...

AI Technical Summary

Problems solved by technology

Although nitrile rubber has good oil resistance and excellent physical properties, when it is used as a rubber hose mandrel material, most of the formulations use plasticizers such as DOP as plasticizers, and the mandrel material is used as a processing accessory in the production of rubber hose. Due to the migration of substances in rubber, it often leads to the residue of DOP and other benzene-containing substances (such as DEHP) in the inner layer of the rubber hose. The phenomenon of non-compliance with environmental protection, especially the residue of DEHP

In addition, due to the poor lubricity of the surface of the existing common mandrel material, not only the core-pulling efficiency is low during the core-pulling process, but also it is easy to scratch the inner layer of the rubber hose

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