Outer layer rubber for high-temperature resistance flexible rubber hose

A rubber hose, high-temperature flexible technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of easy damage to the outer rubber layer, hardening of the inner rubber layer, detachment between layers, etc., and achieve physical properties Good, enhanced tensile strength, high modulus effect
CN109337349AActive Publication Date: 2019-02-15LUOHE BONWELL RUBBER
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LUOHE BONWELL RUBBER
Publication Date
2019-02-15

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Abstract

The invention discloses outer layer rubber for a high-temperature resistance flexible rubber hose. The outer layer rubber is prepared from the following components in parts by weight: 35 parts of rubber material Ethylene-Propylene-Diene Monomer (EPDM), 65 parts of polyurethane elastomer rubber TPU, 9 parts of mica powder, 55 parts of carbon black, 2.1 parts of stearic acid, 4.5 parts of a plasticizer, 1.3 parts of a promoter DM, 0.8 part of a vulcanizing agent DCP, 0.76 part of sulphur, 5.0 parts of an ant-ageing agent AW, and 0.7 part of a composite flame retardant FR201. The invention further discloses a high-temperature resistance flexible rubber hose. The outer layer rubber material prepared by the invention is very good in fluidity, so that the hose can be softened to be to coil, hasvery good affinity with a middle rubber layer, and is difficult to fracture and good in wear resistance, and scratch resistance of the hose is greatly improved.
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Description

technical field

[0001] The invention relates to the field of rubber products, in particular to a high-temperature-resistant flexible rubber hose outer layer rubber. Background technique

[0002] High-pressure rubber hoses are mainly used in hydraulic transmission systems. The working medium is mainly oil, the working temperature and pressure are relatively high, and the service conditions are relatively harsh. The rubber hose with excellent comprehensive performance is very important to ensure the reliable operation of the entire hydraulic system. Most of the existing high-temperature and oil-resistant hoses have the problem that the inner rubber layer becomes hard when the oil temperature is too high, and the interlayer separation is easy to occur during use. Oxygen and ozone in the air cause the outer rubber layer to oxidize and age to form cracks, and the outer rubber layer is easily damaged by friction. flammability and other issues. Contents of the invention

[0003] ...

Claims

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