Rubber foaming tire for electric vehicle and preparation method of rubber foaming tire

Abstract

The invention discloses a rubber foaming tire for an electric vehicle and a preparation method of the rubber foaming tire. The rubber foaming tire comprises a ring-shaped pneumatic tire body, and a foaming body is arranged in the ring-shaped pneumatic tire body. The foaming body is prepared by the following steps: mixing raw materials, carrying out injection at 70-110 DEG C and carrying out vulcanization at 140-160 DEG C. The raw materials comprise the following components: natural rubber, cis-butadiene rubber, carbon black, calcium carbonate, stearic acid, an anti-aging agent, mica powder, anaccelerator, naphthenic oil, zinc oxide, sulfur, protective wax, a foaming agent and an foaming promoter, wherein the ratio of the total mass of the natural rubber and the cis-butadiene rubber to themass of the calcium carbonate is 1:(0.8-1). According to the invention, low heat generation of the foaming body is realized by adopting the calcium carbonate, and the temperature rise range of the foaming body is greatly controlled through adoption of the high-elasticity low-heat-generation low-rolling-resistance raw material and through match of the reasonable combination component design. Underthe running condition of the tire, the later heat generation is low, the driving distance is long, and the service performance of the tire far exceeds the use standard requirement of existing polyurethane foaming tires and the like.

Description

technical field [0001] The invention relates to a tire rubber foam material and a process, in particular to an inflation-free and maintenance-free rubber foam tire suitable for vehicles driven by electric vehicles. Background technique [0002] Non-pneumatic tires have the advantages of wear resistance, strong bearing capacity, no puncture, and no air leakage. It solves the defects of pneumatic tires that need to be checked for tire pressure and often inflated before use, and are easy to be punctured or even punctured during use. . In this way, the value of no post-maintenance is realized, which can reduce the market service cost of tire products. In the existing market, there are already foamed tires. Common foaming materials include EVA, PU and polyurethane. The foaming method is to mix the materials and pour them into the tire in a liquid state, and then perform high-temperature foaming to achieve non-inflation. Effect. However, tires made of such materials are only us...

AI Technical Summary

Problems solved by technology

However, tires made of such materials are only used for trolleys, medical equipment vehicles or agricultural special vehicles traveling at slow speeds (ie, speeds below 10km / h), and cannot meet the use value of high-speed vehicles.

When the foamed tire of this kind of material turns quickly, the foamed material is prone to fatigue. On the one hand, it is easy to generate heat, and the heat is not easy to dissipate. It is easy to cause the foam to melt under high temperature conditions, causing early damage to the tire and affecting the use. On the other hand, under high temperature conditions, the foam makes the tire soft and weak, unable to support the normal driving of the vehicle, and consumes a large amount of current, which affects the continued consumption of mileage

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