Composite polyurethane tread rubber and preparation method thereof

A technology of composite polyurethane and tread rubber, which is applied to special tires, tire parts, transportation and packaging, etc., can solve the problems of carcass deformation or tire blowout, incompatibility, under-vulcanization, etc., and improve compatibility Sex and interaction force, avoid plastic softening, overcome the effect of poor compatibility

Inactive Publication Date: 2018-07-27
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a composite polyurethane tread rubber and its preparation method, which can effectively solve the problems of traditional polyurethane tire technology that the mechanical strength and fatigue resistance will drop sharply with high temperature and high speed driving conditions, and the carcass is prone to deformation. Or tire burst, the bonding part is easy to fall off, and the vulcanization speed of polyurethane and traditional rubber in the sulfur vulcanization system does not match, which makes the combined rubber have technical defects of undervulcanization and incompatibility

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0061] The preparation method of composite polyurethane tread rubber of the present invention may further comprise the steps:

[0062] (1) mixing mixing type polyurethane raw rubber, traditional rubber and metal oxide to obtain the first mixing product;

[0063] (2) kneading the first kneaded product with an unsaturated carboxylic acid to obtain a second kneaded product;

[0064] (3) mixing the second kneaded product with a plasticizer to obtain the first kneaded rubber;

[0065] (4) mixing the first rubber compound, the peroxide and a crosslinking assistant to obtain the second rubber compound;

[0066] (5) The second mixed rubber is vulcanized and molded to obtain a composite polyurethane tread rubber.

[0067] Concrete, the preparation method of composite polyurethane tread rubber comprises the steps:

[0068] (1) Add mixing type polyurethane raw rubber and traditional rubber into the internal mixer, pressurize, masticate, then add metal oxides into the internal mixer, p...

Embodiment 1

[0083] The present embodiment provides specific implementation, and the preparation method is as follows:

[0084] Formula: 90 parts by weight of polyether type mixing polyurethane raw rubber, 10 parts by weight of natural rubber, 15 parts by weight of zinc oxide, 20 parts by weight of methacrylic acid, 15 parts by weight of DBP as a plasticizer, and 15 parts by weight of peroxide The compound DBPH is 1.2 parts by weight, and the co-crosslinking agent is 1 part by weight of Taic.

[0085] (1) Internal mixing: Add 90 parts of polyether-type mixing polyurethane raw rubber and 10 parts of natural rubber into the internal mixer, and pressurize and masticate for 2 minutes; add 15 parts of zinc oxide into the internal mixer, pressurize Mixing for 2 minutes; during this mixing process, the temperature of the internal mixer is controlled at 60°C through the water cooling system; the temperature of the internal mixer is raised to 80°C, and 20 parts of methacrylic acid are added, and mi...

Embodiment 2

[0091] The present embodiment provides specific implementation, and the preparation method is as follows:

[0092] Formula: 90 parts by weight of polyether type mixing polyurethane raw rubber, 10 parts by weight of nitrile rubber, 10 parts by weight of magnesium oxide, 20 parts by weight of methacrylic acid, 15 parts by weight of plasticizer DOP, peroxide The odorless DCP is 1.2 parts by weight, and the auxiliary crosslinking agent Taic is 1 part by weight.

[0093] (1) Internal mixing: Add 90 parts of polyether-type mixing polyurethane raw rubber and 10 parts of nitrile rubber into the internal mixer, and pressurize and masticate for 2 minutes; add 10 parts of magnesium oxide into the internal mixer, pressurize Mixing for 2 minutes; during this mixing process, the temperature of the internal mixer is controlled at 60°C through the water cooling system; the temperature of the internal mixer is raised to 80°C, and 20 parts of methacrylic acid are added, and mixed for 8 minutes....

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Abstract

The invention belongs to the technical field of tire manufacturing, and particularly relates to composite polyurethane tread rubber and a preparation method thereof. The composite polyurethane tread rubber is obtained through mixing of the following raw materials of mixing type polyurethane rubber, traditional rubber, unsaturated carboxylic acid, metallic oxide, superoxide, an assistant crosslinker and a plasticizer. The composite polyurethane tread rubber provided by the invention can effectively solve the technical defects that the mechanical strength and the anti-fatigue strength in a traditional polyurethane tire technique can sharply decline along with a high temperature and high speed driving condition, a carcass is prone to occurring deformation or tire bursting, a binding part is liable to fall off, the curing speeds of polyurethane and traditional rubber are not matched in a sulfur vulcanization system, and thus undervulcanization and incompatibility exist when two rubber areused simultaneously.

Description

technical field [0001] The invention belongs to the technical field of tire manufacture, and in particular relates to a composite polyurethane tread rubber and a preparation method thereof. Background technique [0002] With the rise of the global low-carbon economy, "green manufacturing" has become one of the important strategic guidelines for the sustainable development of China's rubber industry. Increasing product structure adjustment, vigorously developing safe, energy-saving and environmentally friendly raw materials, and developing new products are the basis of "green manufacturing". Along with the development of the automobile industry, tire technology and theory are constantly improving and improving. Although the current pneumatic radial tires have good dynamic performance, such as small deformation during driving, low heat generation, excellent elasticity, and are suitable for high-speed driving. etc., but at the same time, there are disadvantages such as poor we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L7/00C08L75/06C08L9/06C08L9/02C08K13/02C08K3/22C08K5/09C08K5/14B60C1/00
CPCB60C1/0016C08K2003/222C08K2003/2296C08L9/06C08L75/06C08L75/08C08L2201/08C08L7/00C08K13/02C08K3/22C08K5/09C08K5/14C08L9/02
Inventor 岑兰叶圣涛谭信文吕国正
Owner GUANGDONG UNIV OF TECH
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