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Tyre inner liner composite material and preparation method thereof

A composite material and airtight layer technology, applied in building insulation materials, building components, buildings, etc., can solve problems such as damage, achieve good shielding effect, improve flex fatigue resistance, and improve the effect of excessive hardness

Active Publication Date: 2018-01-05
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The airtightness of the rubber compound for the inner liner of a tubeless radial tire is extremely important for the normal use of the tire. If the airtightness is not good, the tire is prone to early damage when it is often driven under the state of lack of air.

Method used

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  • Tyre inner liner composite material and preparation method thereof
  • Tyre inner liner composite material and preparation method thereof
  • Tyre inner liner composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The formula consists of the following raw materials in parts by weight: 80 parts of bromobutyl rubber BIIR, 20 parts of nitrile rubber NBR (3365), 2 parts of nanoclay, 5 parts of modified asphalt (CJ-100), 3 parts of zinc oxide, oxide 0.1 part of magnesium, 1 part of stearic acid, 40202 parts of anti-aging agent, 1 part of anti-aging agent RD, 10 parts of aromatic oil, 3 parts of DOP, 60 parts of carbon black, 1.5 parts of accelerator DM, and 0.5 parts of sulfur.

[0035] Preparation:

[0036] First prepare the masterbatch of nitrile rubber / nano-clay on the open mill, then transfer to the internal mixer, add BIIR, NBR / nano-clay masterbatch, modified asphalt (CJ-100) and then at 90°C at a speed of 40r / min Add ZnO, MgO, SA 2 minutes after the torque is stable, add antioxidant 4020, anti-aging agent RD after the torque is stable for 1 minute, add half of the carbon black, aromatic oil and DOP after the torque is stable for 1 minute, add the other half of the carbon black a...

Embodiment 2

[0039]The formula consists of the following raw materials in parts by weight: 70 parts of bromobutyl rubber BIIR, 30 parts of nitrile rubber NBR (3365), 3 parts of nanoclay, 7.5 parts of modified asphalt (CJ-100), 3 parts of zinc oxide, oxide 0.1 part of magnesium, 1 part of stearic acid, 2 parts of anti-aging agent 4020, 1 part of anti-aging agent RD, 10 parts of aromatic oil, 3 parts of DOP, 60 parts of carbon black, 1.5 parts of accelerator DM, and 0.5 parts of sulfur.

Embodiment 3

[0041] The formula is composed of the following raw materials in parts by weight: bromobutyl rubber BIIR 60 parts, nitrile rubber NBR (3365) 40 parts, nano clay 4 parts, modified asphalt (CJ-100) 10 parts, zinc oxide 3 parts, oxide 0.1 part of magnesium, 1 part of stearic acid, 2 parts of anti-aging agent 4020, 1 part of anti-aging agent RD, 10 parts of aromatic oil, 3 parts of DOP, 60 parts of carbon black, 1.5 parts of accelerator DM, and 0.5 parts of sulfur.

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Abstract

The present invention relates to a tyre inner liner composite material and a preparation method thereof, and belongs to the field of high-performance all-steel radial tyres. By introducing butadiene-acrylonitrile rubber into the formula of a brominated butyl rubber inner liner, airtightness is greatly raised. A proper compatilizer is selected for compatiblizing modification of BIIR and NBR. Nano-clay is mixed into a dispersion phase. By adding a polar small molecular plasticizer to adjust the rubber compounding, the airtightness, ozone resistance, flexural fatigue resistance and mechanical properties of the material are further improved, and performance requirements of the high-performance radial tyre inner liner can be met. In addition, the invention also has advantages of simple equipment, simple operation, good controllability, low cost and industrialization amplification.

Description

technical field [0001] The invention belongs to the field of all-steel radial truck tires, and in particular relates to a composite material for a tire inner liner and a preparation method thereof. Background technique [0002] Bromobutyl rubber (BIIR) is currently the main compound used for the inner liner of all-steel radial truck tires because of its good air tightness and excellent flex fatigue resistance. However, the processing performance of BIIR is poor, and it is prone to early vulcanization after being parked for 3 or 4 days, resulting in a decrease in the adhesive performance of the mixed rubber, which has brought great difficulties to production scheduling. On the premise of ensuring the good comprehensive performance of the tire inner liner, reducing the amount of BIIR in the inner liner as much as possible is of great significance for actual production. [0003] The airtightness of the rubber compound for the inner liner of a tubeless radial tire is extremely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L9/02C08L95/00C08L91/00C08K13/02C08K3/04C08K7/00C08K5/09C08K5/12C08K3/22C08K5/3437
Inventor 卢咏来纪玲慧陈家辉楼齐淼张立群金振涣
Owner BEIJING UNIV OF CHEM TECH
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