A kind of preparation method of composite material for automobile air spring rubber air bag

Abstract

The invention discloses a method for preparing a composite material for an automotive air spring rubber airbag. The method comprises the following steps: firstly, adding butadiene rubber, polyurethane rubber, chloroprene rubber, polyvinyl chloride, calcium carbonate, zinc oxide and boron nitride into a mixing stirrer for uniformly mixing, then adding the mixture into a reflux unit, adding cyclohexane, carrying out heating reflux, filtering to obtain a solid mixture, drying the solid mixture by using hot nitrogen, transferring the solid mixture into a reaction kettle, adding stearic acid, polydimethylsiloxane, graphene, silicon dioxide, sodium allylsulfonate, diphenylamine and hydroxypropyl cellulose, heating in an inert gas atmosphere to react to obtain an intermediate, adding an accelerator CZ1-3, an accelerator DM 3 and dimethyl diallyl ammonium chloride, uniformly mixing and transferring the mixture into a rubber mixing machine for rubber mixing, and finally, putting rubber material after rubber mixing into a vulcanizing machine for vulcanizing and then discharging. The composite material for the automotive air spring rubber airbag, provided by the invention, has excellent mechanical properties, ozone aging resistance and heat aging resistance.

Description

technical field [0001] The invention belongs to the field of new materials for automobile suspensions, and in particular relates to a method for preparing composite materials for automobile air spring rubber airbags. Background technique [0002] Air spring is a kind of curved capsule made of rubber and network cable, commonly known as pneumatic tire, corrugated pneumatic tire, air bag, leather tiger, etc. The two ends of the capsule need to be connected with two steel plates to form a compressed air chamber. The rubber and the network cable itself do not provide the load bearing capacity, but are completed by the compressed air filled in the capsule. The number of curved capsules is usually 1~3 curved capsules, but it can also be designed and manufactured into 4 or 5 curved capsules according to the needs, and two air springs can be superimposed for use under certain conditions. The key component of the air spring is the rubber airbag, which consists of an outer rubber la...

AI Technical Summary

Problems solved by technology

At present, natural rubber is mostly used as the rubber material of rubber airbags. However, due to the poor ozone resistance and thermal oxygen aging resistance of natural rubber, the product is prone to cracks during long-term use, which eventually leads to early failure of the product.

In order to improve the aging performance of rubber airbags, some companies have used neoprene rubber to produce rubber airbags, but due to the poor adhesion between neoprene rubber and nylon cords, it cannot meet the needs of use; at the same time, there are also researches on the combination of neoprene rubber and natural rubber. It is used to improve the overall performance of rubber airbags, but the degree of improvement is not large, and it still cannot meet the increasingly high requirements for the performance of corresponding automotive air rubber materials in the rapid development of the automobile industry. Therefore, further research and development is required. A kind of mechanical properties and The air rubber material with excellent anti-aging performance makes it better used in the field of automobile air rubber

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