Air spring formulation for automobile

Abstract

The invention discloses an air spring formulation for an automobile, which is characterized by comprising the following compositions by mass portion: a, the formulation of inner and outer layer rubberof the air spring: 50 to 100 portions of neoprene, 50 to 100 portions of natural rubber, 0.5 to 5 portions of magnesia, 0.5 to 3 portions of stearic acid and 0.5 to 2.5 portions of antiaging agent OD, and b, the formulation of cord fabric rubber of the air spring: 50 to 100 portions of the natural rubber, 0.5 to 2 portions of the stearic acid, 2 to 5 portions of zinc oxide, 0.5 to 3 portions of antiaging agent RD, 0.5 to 2.5 portions of antiaging agent 4020 and 2 to 4 portions of tackifying resin A-90. The air spring manufactured by the formulation can meet the following key technical points:1, the outer layer rubber has excellent ozone aging resistant property, thermal oxygen aging resistant property and flexing cracking resistant property; 2, the cord fabric rubber is closely adhered with nylon cord fabric, and the rubber has excellent thermal oxygen aging resistant property; 3, the layers are closely adhered; 4, the airtightness is excellent; and 5, the service life is long.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a raw material for preparing air springs for automobiles. Background technique [0002] The key component of the air spring is the rubber airbag, which is composed of an outer layer of rubber, a cord layer, and an inner layer of rubber. The outer rubber is a protective layer, which is used to isolate ozone, oxygen and other external factors from contacting the ply, so as to prevent the rubber of the ply from aging; the ply is the pressure-bearing layer of the rubber spring, and there are multiple layers of nylon cord as the skeleton material; the inner layer Glue is the airtight layer. At present, natural rubber is mostly used as the rubber material of rubber airbags, but due to the poor ozone resistance and thermal oxygen aging performance of natural rubber, surface cracks are prone to occur during product use, which eventually leads to early failure of the product; ...

AI Technical Summary

Problems solved by technology

At present, natural rubber is mostly used as the rubber material of rubber airbags, but due to the poor ozone resistance and thermal oxygen aging performance of natural rubber, surface cracks are prone to occur during product use, which eventually leads to early failure of the product; in order to improve the aging of rubber airbags performance, some manufacturers use neoprene rubber to produce rubber airbags, but due to the poor adhesion between neoprene rubber and nylon cords, they cannot meet the requirements of use; there are also manufacturers that use neoprene rubber for inner and outer rubber, and natural rubber for cord rubber, but Neoprene and natural rubber are difficult to bond, resulting in delamination of the product and affecting the service life

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