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Polyester-rubber composite tyre production method

A manufacturing method and polyurethane technology, applied in special tires, tire parts, tires, etc., can solve the problems of high molecular chain rigidity, poor heat resistance of polyurethane, and large intramolecular hydrogen bonding, and achieve simple molding process and excellent performance. , the effect of low driving heat

Active Publication Date: 2008-09-03
BESTIRE XINXING NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong polarity of polyurethane and the strong interaction between intermolecular and intramolecular hydrogen bonds, its molecular chains are rigid, and internal heat generation is also large under dynamic use conditions. However, polyurethane itself has poor heat resistance, and the long-term use temperature is 80 below ℃
Therefore, these tires developed are only suitable for occasions where the driving speed is lower than 50Km / hour, such as low-speed tires for bicycles, recreational vehicles, lawn mowers, golf carts, scooters, etc.
Recently, the American Amerityre company has developed a passenger car spare tire. Although it has reached the standard of the U.S. Federal Motor Vehicle Safety Standard (FMVSS) 109, the practicability of polyurethane tires has reached a new level, but the tires are made of sealed polyurethane foam. The finished solid tire can only travel 2000 miles at a speed of 50Km / hour

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Surface treatment of rubber carcass

[0039] The carcass surface treatment method combining surface treatment agent and polyurethane adhesive is adopted.

[0040] (1) Preparation of surface treatment agent: get 6.8 parts by weight of N, N-dichloro-p-toluenesulfonamide, join in the anhydrous acetone solution of 93.2 parts by weight, stir and dissolve and then add 4.2 parts by weight of benzoyl peroxide , the surface treatment agent is prepared after stirring evenly;

[0041] (2) Preparation of polyurethane adhesive: put 100 parts by weight of polytetrahydrofuran diol with a molecular weight of 1000 into the reaction kettle, heat to 120±10°C, evacuate until the residual pressure is less than 500Pa, remove moisture for 2 hours, and cool down to At about 80°C, remove the vacuum, pass in nitrogen, add 59 parts by weight of pure diphenylmethane diisocyanate, react for 2 hours, measure the weight percentage of isocyanate, that is, NCO%, when the NCO% of the prepolymer...

Embodiment 2

[0056] Step 1: Surface treatment of rubber carcass

[0057] The carcass surface treatment method combines plasma surface treatment and polyurethane adhesive coating.

[0058] (1) Preparation of polyurethane adhesive: put 100 parts by weight of polycaprolactone diol with a molecular weight of 2000 into the reactor, heat to 120±10°C, vacuumize until the residual pressure is less than 500Pa, and remove the moisture for 2 hours. Cool down to 80±2°C, release the vacuum, blow in nitrogen, add 47.6 parts by weight of pure diphenylmethane diisocyanate, react for 2 hours, and measure NCO% to be about 8% for later use. When in use, take 55 parts by weight of prepolymer, add 45 parts by weight of ethyl acetate to dilute, stir evenly, add 4.51 parts by weight of 1,4-butanediol / triethanolamine mixed chain extender, wherein 1,4-butanediol 4.02 parts by weight of alcohol, 0.49 parts by weight of triethanolamine, and stir to obtain the polyurethane adhesive;

[0059] (2) Carcass surface tre...

Embodiment 3

[0073] Step 1: Surface treatment of rubber carcass

[0074] The carcass surface treatment method combines plasma surface treatment and polyurethane adhesive coating.

[0075] (1) Preparation of polyurethane adhesive: put 100 parts by weight of polytetrahydrofuran diol with a molecular weight of 1000 into the reaction kettle, heat to 120±10°C, evacuate until the residual pressure is less than 500Pa, remove moisture for 2 hours, and cool down to 70±5°C, release the vacuum, blow in nitrogen, add 64 parts by weight of pure diphenylmethane diisocyanate, react for 2 hours, the measured NCO% is about 7.9 and set aside. When in use, take 60 parts by weight of prepolymer, add 40 parts by weight of ethyl acetate to dilute, stir evenly, add 5.02 parts by weight of 1,4-butanediol / triethanolamine mixed chain extender, wherein 1,4-butyl 4.47 parts by weight of diol, 0.55 parts by weight of triethanolamine, and stir to obtain the polyurethane adhesive;

[0076] (2) Rubber carcass surface t...

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PUM

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Abstract

The present invention relates to compound tyre producing technology, and is especially one kind of compound polyurethane-rubber tyre and its production process. The compound polyurethane-rubber tyre has optimized and modified recipe of polyurethane of oligomer polyhydric alcohol / tetrafuran-propylene oxide copolymer-p-phenylenediisocyanate system and polyurethane of oligomer polyhydric alcohol / hydroxy-eliminated polybutadiene-diphynel methane diisocyanate system; tyre surface treatment; and casting to form the green tyre in compound structure. The compound tyre has less heat produced during running, high heat resistance, applicability to high speed running and long service life as well as simple production process and low cost.

Description

technical field [0001] The invention relates to a manufacturing technology of a composite tire, in particular to a manufacturing method of a polyurethane tread-rubber carcass composite structure green tire. Background technique [0002] Polyurethane is a material with excellent comprehensive properties. After more than 60 years of development, it has unique comprehensive properties: a wide range of hardness, strength and modulus, high elongation, wide service temperature range, and Good oil resistance, low temperature resistance, ozone aging resistance and other characteristics, and second to none wear resistance, commonly known as "wear-resistant rubber", its wear resistance is 2 to 10 times that of natural rubber, and the molding process and equipment are simple, can be completely Recycling is an ideal tire tread rubber material. [0003] Since the 1960s, many countries in the world have begun to apply polyurethane to the research work of tire manufacturing, such as the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C39/10B29B13/00C08G18/10C08F2/44B29K75/00B29K21/00B29L30/00
CPCB29D30/08B60C1/0016C08G18/08C08G18/10C08G18/3203C08G18/72C08K7/10
Inventor 张海易玉华马铁军
Owner BESTIRE XINXING NEW MATERIAL TECH CO LTD
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