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Radial truck tire air-tight layer component and preparation process thereof

A radial tire and preparation process technology, applied in tire parts, reinforcement layers of pneumatic tires, vehicle parts, etc., can solve the problems of poor rubber layer uniformity and structural dimensional stability, low green strength of raw rubber, etc. Intensity, reduction of material deformation or movement, effect of radiation dose reduction

Inactive Publication Date: 2012-07-25
河南省科学院同位素研究所有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a radial truck tire inner liner component and its preparation process, which can overcome the defects of low green strength of raw inner liner rubber and poor uniformity and structural dimensional stability of the rubber layer during tire processing and molding. , and the performance of the inner liner of the rubber compound is good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Rubber formula for inner liner parts of radial truck tires: 80 parts of bromobutyl rubber, 20 parts of natural rubber, 60 parts of carbon black N660, 2 parts of stearic acid, 4 parts of zinc oxide, 1.2 parts of antioxidant 4020 (6PPD), insoluble 1 part of sulfur, 1.5 parts of accelerator MBTS (DM), 8 parts of rubber softener (P-150).

[0022] Mix the rubber base material, anti-aging system, reinforcing system and additives with an internal mixer according to the above formula. The mixing temperature range is 145-155°C, and the mixing time is 5 minutes. Mix the rubber evenly and discharge Then add vulcanization system to the open mill for masticating, the temperature range is 100-110 ° C, and the time is 3 minutes to complete the preparation of the mixed rubber, and it is calendered according to the production process of the inner liner of the truck radial tire to make an inner liner sheet material, the thickness is 4mm, the inner liner sheet is placed in the cobalt sour...

Embodiment 2

[0025] Rubber formula for inner liner parts of radial truck tires: bromobutyl rubber 72 parts, natural rubber 8 parts, high-cis polyisoprene rubber 20 parts, carbon black N660 60 parts, stearic acid 3 parts, zinc oxide 5 parts 3 parts, anti-aging agent 4020 (6PPD) 3 parts, insoluble sulfur 2.0 parts, accelerator MBTS (DM) 1.5 parts, rubber softener (P-150) 10 parts.

[0026] The rubber material mixing process, the calendering preparation process of the airtight layer components, and the radiation pretreatment process are the same as in Example 1. After testing, the Green strength of the rubber sheet has increased to 2.1MPa, the elongation at break is 900%, and the nitrogen permeability is 1.42×10 -17 / [m 2 ·(Pa·s) -1 ], proving that the use of radiation pretreatment technology to pre-vulcanize the inner liner components can not only significantly improve the quality of the product, but also effectively reduce the amount of natural rubber, and has little effect on the mechani...

Embodiment 3

[0028] Rubber formula for inner liner parts of radial truck tires: bromobutyl rubber 72 parts, natural rubber 8 parts, high-cis polyisoprene rubber 20 parts, carbon black N660 60 parts, stearic acid 2 parts, zinc oxide 5 parts 3 parts, anti-aging agent 4020 (6PPD) 3 parts, insoluble sulfur 0.7 parts, accelerator MBTS (DM) 1.5 parts, rubber softener (P-150) 10 parts; radiation crosslinking sensitizer tetraethylene glycol dimethacrylate 10 parts of ester.

[0029] The rubber material mixing process and the calendering preparation process of the airtight layer parts are the same as in Example 1. In the radiation pretreatment process, the inner liner sheet is placed in the cobalt source chamber, and the radiation treatment is carried out in the air. The dose rate is 8kGy / h, and the radiation dose of the inner liner sheet is 10kGy. Preparation of Dense Layer Parts.

[0030] After testing, the Green strength of the rubber sheet can reach 1.8MPa, the elongation at break is 940%, an...

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Abstract

The invention belongs to the technical field of processing of rubber tires, and particularly relates to a radial truck tire air-tight layer component and a preparation process thereof. The radial truck tire air-tight layer component comprises the following substances in parts by mass: 100 parts of rubber substrate, 40-100 parts of reinforcing system, 1-10 parts of anti-aging system, 4.7-15 parts of vulcanization system, 0-20 parts of radiation crosslinking sensitizer and 0-50 parts of additive aid. The method comprises the following steps of: mixing other substances except a vulcanizing agent, discharging glue, and adding the vulcanizing agent for preparing a rubber compound; and rolling the prepared rubber compound to obtain an air-tight layer sheet of 3-5 millimeters in thickness, performing cobalt source radiation treatment in the air to obtain the radial truck tire air-tight layer component, wherein the radiation dosage of the air-tight layer sheet is 5-50 kGy. The air-tight layer component which is subjected to radiation pretreatment has the advantages of high Green strength, high structural size stability, high air tightness, and capability of improving the tire quality at a lower radiation dosage.

Description

technical field [0001] The invention belongs to the technical field of rubber tire processing, and in particular relates to an inner liner component of a load radial tire and a preparation process thereof. Background technique [0002] With the development of the economy and the progress of society, tires, as an important support and strategic resource of the transportation industry, are highly valued by various countries. The tire is composed of multiple parts with rubber material as the main base material after vulcanization and shaping. As the development trend of the tire industry, the tubeless radial tire is equipped with an airtight layer on its inner side. In addition to protecting the cord layer, It can also prevent the pneumatic tire from leaking out of the carcass layer through the rubber due to the pressure difference, and play the function of maintaining pressure and sealing the gas. Tubeless radial tires have the advantages of good air tightness, good heat diss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L9/00C08L9/06C08L11/00C08L23/16C08L7/00C08K13/02C08J7/00C08J3/24B29C35/10B29B7/72B29C43/24B60C9/00B29L30/00
Inventor 杨明成朱军应世洲李召朋张本尚宋卫东郭磊邓鹏飏李坤豪陈海军郭东权刘克波赵惠东张宏娜
Owner 河南省科学院同位素研究所有限责任公司
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