Preparation method for rubber for inner rubber layer of car power steering hose

Abstract

The invention discloses a preparation method for rubber for the inner rubber layer of a car power steering hose, and belongs to the technical field of car rubber pieces. The preparation method comprises the following steps: adding chlorosulfonated polyethylene, fast extruding furnace black, cracking carbon black, magnesium oxide, zinc diethyl dithiocarbamate, dilauryl thiodipropionate, zinc stearate, 2,2'-dithio-dibenzo thiazole, trioctyl trimellitate and magnesium strong powder into an internal mixer for banburying; after banburying, discharging rubber at the rubber temperature of 160 DGE C to obtain a master batch; adding the prepared master batch into the internal mixer, and adding in trithiocyanuric acid and sulphur for mixing; after mixing, sequentially squeezing out within a certain temperature range to obtain rubber for the inner rubber layer of the car power steering hose. Compared with that manufactured rubber for an inner rubber layer of a car power steering hose in the prior art, the rubber adopts the synergistic effects of the raw materials and the corresponding squeezing temperatures to effectively improve the heat resistance property of the rubber.

Description

technical field

[0001] The invention relates to the technical field of rubber parts for automobiles, in particular to a method for preparing rubber for an inner rubber layer of an automobile power steering tube. Background technique

[0002] The power steering tube is a product with high technical content in the automotive steering system components. With the rapid development of the automobile industry, the application of power steering tubes in automotive steering systems is becoming more and more common. At the same time, the performance requirements for automotive power steering tubes are also increasing, especially their heat resistance. Automotive power steering tubes are generally made of inner and outer layers of rubber. At present, although people continue to study and improve the heat resistance of the rubber used for the inner rubber layer of the automobile power steering tube, the effect is not obvious, and the heat resistance still needs to be improved. Conte...