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Rubber material for inner liner of explosion-proof tire and preparation method thereof

A technology of run-flat tires and airtight layers, which is applied to special tires, tire parts, transportation and packaging, etc., and can solve problems such as scrapping of run-flat tires and cracks in the airtight layer

Active Publication Date: 2020-10-02
SICHUAN YUANXING RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies in the prior art, and provides a kind of rubber material for the inner liner of the explosion-proof tire and an embodiment of the preparation method thereof, in order to solve the problem of explosion-proof When the tire loses pressure and travels for a short mileage, the airtight layer is prone to cracks, which leads to the scrapping of the run-flat tire

Method used

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  • Rubber material for inner liner of explosion-proof tire and preparation method thereof
  • Rubber material for inner liner of explosion-proof tire and preparation method thereof
  • Rubber material for inner liner of explosion-proof tire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Brominated isobutylene-p-methylstyrene glue 80PHR, polyisoprene glue 20PHR, low specific surface area silica (PET<100) 40PHR, carbon black N660 15PHR, naphthenic oil 4PHR, zinc oxide 4PHR, stearic acid 2PHR, carbon five resin 3PHR, RH100 2PHR, alkylphenol disulfide 0.8PHR, sulfur 0.9PHR, accelerator DM 1.3PHR, accelerator TT 0.2PHR.

[0028] Put the polyisoprene glue into the internal mixer together with brominated isobutylene-p-methylstyrene glue, stearic acid, tackifier carbon five resin, and leveling agent RH100 according to the conventional conditions; about 25 seconds The latter two rubbers have been basically broken, and then put in low specific surface area white carbon black and N660 carbon black to 90 °C, add softener naphthenic oil to 115 °C, and discharge when the upper top bolt is cleaned to 145 °C; park for at least After 4 hours until the temperature of the film drops to room temperature, put it into the internal mixer together with zinc oxide, accelerator...

Embodiment 2

[0030] Brominated isobutylene-p-methylstyrene glue 100PHR, low specific surface area silica (PET<100) 45PHR, carbon black N660 10PHR, environmentally friendly aromatic oil 4PHR, zinc oxide 5PHR, stearic acid 2.5PHR, carbon nine resin 5PHR, Leveling agent CJ4001PHR, insoluble sulfur 1PHR, accelerator DM 1.25PHR, accelerator TT 0.3PHR.

[0031] First put brominated isobutylene-p-methylstyrene rubber, stearic acid, C9 resin, and leveling agent CJ400 into the internal mixer together; after about 25 seconds, the two rubbers have been basically broken, and then put in low specific surface area white carbon black and N660 carbon black to 90°C, put in environmentally friendly aromatic hydrocarbon oil to 115°C, clean the top bolt to 145°C, and discharge; park for at least 4 hours until the film temperature drops to room temperature, and then mix with zinc oxide, accelerator (DM, TT) and insoluble sulfur are put into the internal mixer together, and when it is about 80°C, lift the top b...

Embodiment 3

[0033] Brominated isobutylene-p-methylstyrene glue 90PHR, polyisoprene glue 10PHR, low specific surface area silica (PET<100) 35PHR, carbon black N660 20PHR, naphthenic oil 4PHR, zinc oxide 4PHR, stearic acid 2PHR, carbon five resin 3PHR, RH100 2PHR, alkylphenol disulfide 0.8PHR, sulfur 0.9PHR, accelerator DM 1.3PHR, accelerator TT 0.2PHR.

[0034] Put the polyisoprene glue into the internal mixer together with brominated isobutylene-p-methylstyrene glue, stearic acid, tackifier carbon five resin, and leveling agent RH100 according to the conventional conditions; about 25 seconds The latter two rubbers have been basically broken, and then put in low specific surface area white carbon black and N660 carbon black to 90°C, add softener naphthenic oil to 115°C, and discharge when the upper top bolt is cleaned to 145°C; park for at least After 4 hours until the temperature of the film drops to room temperature, put it into the internal mixer together with zinc oxide, accelerators (...

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Abstract

The invention discloses a rubber material for an inner liner of an explosion-proof tire. The rubber material comprises the following components: 60-100 PHR of brominated isobutylene-p-methylstyrene rubber, 0-40 PHR of polyisoprene rubber, 0-45 PHR of white carbon black, 10-50 PHR of N660 carbon black, 3-5 PHR of a softening agent, 2-5 PHR of zinc oxide, 1-3 PHR of stearic acid, 2-5 PHR of resin, 1-2 PHR of a homogenizing agent, 0-1 PHR of alkylphenol disulfide, 0.5-1 PHR of a cross-linking agent, and 1.5-2 PHR of an accelerant. The rubber material is obtained by two-stage process rubber mixing. The obtained rubber material is high in carbon black dispersion grade, the air permeability coefficient can be controlled to stably reach 7.5 or above, the air permeability coefficient of the rubbermaterial can be controlled to be 2E-14 or below, the fatigue property of the rubber material reaches 1,400,000 times without cracks, and the monitoring change of the standing air pressure of an operated finished product is within 2.5% / month.

Description

Technical field [0001] The present invention relates to a material formula for preparing tires, and more specifically, the present invention relates to a rubber compound for the inner liner of an anti-explosion tire and a preparation method thereof. Background technique [0002] A tire blowout is a very serious safety accident, especially on the highway. Equipping vehicles with "run-flat tires" solves worrying safety issues to the greatest extent. [0003] With the further promotion and implementation of safety awareness in the people's livelihood industry, "iron-wrapped meat" has begun to widely enter every family. And run-proof tires have once become the choice of various machine manufacturers to improve their brand positioning. However, with the use of run-flat tires in recent years, all car repair centers have uniformly chosen to allow car owners to replace them directly instead of repairing them. This has brought great waste to the consumption of raw rubber, especiall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L9/00C08L91/00C08L57/02C08K13/04C08K7/26C08K3/04C08K3/22C08K5/09C08K3/06C08K5/47C08K5/40B60C1/00
CPCC08L23/283B60C1/0041C08L2205/035C08L2205/03C08K2003/2296C08L9/00C08L91/00C08L57/02C08K13/04C08K7/26C08K3/04C08K3/22C08K5/09C08K3/06C08K5/47C08K5/40Y02T10/86
Inventor 吕荣福
Owner SICHUAN YUANXING RUBBER
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