Low-heat-generation rubber composition with excellent scorching performance, mixing method and application of low-heat-generation rubber composition and tire

Abstract

The invention relates to the fields of tires, rubber products and the like, in particular to a low-heat-generation rubber composition with excellent scorching performance, a mixing method and application of the low-heat-generation rubber composition and a tire. A mixing formula of the rubber composition comprises the following components in parts by weight: 100 parts of rubber, 1-5 parts of a carbon black coupling agent, 40-70 parts of white carbon black, 20-50 parts of carbon black and 2-8 parts of a silane coupling agent. A: b is greater than or equal to 1 and less than or equal to 3; the part ratio of the white carbon black to the silane coupling agent is as follows: a: c is more than or equal to 8 and less than or equal to 17; the carbon black coupling agent comprises two chemical structures, wherein (1) is-NH2, and (2) is one or more of-NH-,-C = C-and-SSO3H; the mixing method of the rubber composition must comprise the following steps: first-stage mixing: adding the rubber, the carbon black and the carbon black coupling agent, and activating the carbon black coupling agent at the temperature of 160 DEG C or above; and second-stage mixing: adding the first-stage mixed rubber material, white carbon black and a silane coupling agent, and carrying out silanization reaction at the constant temperature of 140-150 DEG C for 60-120 seconds. According to the rubber composition and the mixing method thereof, the low heat generation performance of the carbon black coupling agent is guaranteed, and the good scorching safety performance is achieved.

Description

technical field [0001] The invention relates to the application fields of industries such as tires and rubber products, in particular to a low-heat-generation rubber composition with excellent scorch performance and a mixing method, application and tires thereof. Background technique [0002] As the only part of the vehicle that is in contact with the ground, the pneumatic rubber tire undertakes the functions of vehicle bearing, traction / braking, maneuvering stability and driving comfort, and its performance plays a decisive role in the driving of the vehicle. In order to more intuitively distinguish the pros and cons of tire performance, Europe began to implement the tire labeling method in 2009, that is, tires sold in Europe need to be labeled according to their rolling resistance, wet skid resistance and noise. Subsequently, the United States, Japan, South Korea, and other countries have successively introduced their own labeling laws. [0003] The rolling resistance inc...

AI Technical Summary

Problems solved by technology

However, a large number of experimental studies have proved that the carbon black coupling agent will significantly shorten the scorch time and seriously affect the scorch safety performance

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