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Tire sidewall rubber material containing liquid reclaimed rubber and preparation method thereof

A technology of reclaimed rubber and sidewall rubber, which is applied to special tires, tire parts, transportation and packaging, etc. It can solve problems such as difficult to ensure environmental protection, a large amount of organic solvents and operating oils, and achieve significant social and economic benefits. Resistant to solvent extraction and improved aging resistance

Pending Publication Date: 2021-08-20
宿迁绿金人橡塑机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method also requires a large amount of organic solvents and operating oils, making it difficult to ensure the green and environmental protection of the production process

Method used

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  • Tire sidewall rubber material containing liquid reclaimed rubber and preparation method thereof
  • Tire sidewall rubber material containing liquid reclaimed rubber and preparation method thereof
  • Tire sidewall rubber material containing liquid reclaimed rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A tire sidewall compound containing liquid reclaimed rubber, which consists of the following components in parts by weight:

[0020]

[0021]

[0022] The sol content of the liquid reclaimed rubber is 80%, the number average molecular weight Mn is 5000, and the molecular weight distribution is 4.2. The rubber powder used is waste rubber powder, which is waste tire top rubber powder, the softener is pine tar pitch, and the activator is B480; the weight ratio of waste rubber powder to softener and activator is 100:4:3.

[0023] The preparation method of liquid reclaimed rubber is as follows: After uniformly mixing the waste rubber powder and the regenerated agent, they are added into a screw extruder with an exhaust section through a compacting device, and the temperature of different sections of the extruder is controlled at 400°C. After reacting for 8 minutes under the action of shearing, it is extruded from a screw extruder, and liquid reclaimed rubber can be obt...

Embodiment 2

[0029] A tire sidewall compound containing liquid reclaimed rubber, which consists of the following components in parts by weight:

[0030]

[0031]

[0032] The sol content of the liquid reclaimed rubber is 85%, the number average molecular weight Mn is 10000, and the molecular weight distribution is 6.5. The rubber powder is waste rubber powder and is waste tire tread rubber powder. The softener is tall oil pitch, and the activator is B420; the weight ratio of waste tire tread rubber powder, tall oil pitch, and activator B420 is 100:8:0.2. The preparation method of liquid reclaimed rubber is as follows:

[0033] Mix waste tire tread rubber powder, tall oil pitch and activator B420 evenly, and then put them into a screw extruder with an exhaust section through a compacting device, and control the temperature of different sections of the extruder at 300°C , After reacting for 6 minutes under the action of shear, extrude from the screw extruder, and obtain liquid reclai...

Embodiment 3

[0039] A tire sidewall compound containing liquid reclaimed rubber, which consists of the following components in parts by weight:

[0040]

[0041] The sol content of the liquid reclaimed rubber is 71%, the number average molecular weight Mn is 14000, and the molecular weight distribution is 7.8. The waste rubber powder is waste tire tread rubber powder, the softener is pine tar pitch, and the activator is B480; the weight ratio of waste tire tread rubber powder, pine tar pitch and activator B480 is 100:3:4. The preparation method of liquid reclaimed rubber is as follows:

[0042] Mix waste tire tread rubber powder, tall oil pitch and activator B480 evenly, and then put them into a screw extruder with an exhaust section through a compacting device, and control the temperature of different sections of the extruder at 350°C , After reacting for 4.5 minutes under the action of shearing, it is extruded from the screw extruder, and the liquid reclaimed rubber can be obtained a...

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Abstract

The invention discloses a tire sidewall rubber material containing liquid reclaimed rubber and a preparation method thereof, which belong to the field of rubber. The rubber material is prepared from the following raw materials in parts by weight: 20 to 50 parts of natural rubber, 30 to 50 parts of butadiene rubber, 20 to 50 parts of liquid reclaimed rubber, 30 to 50 parts of carbon black, 2.0 to 6.0 parts of tackifying resin, 2.5 to 5.0 parts of zinc oxide, 1.0 to 3.0 parts of stearic acid, 3.0 to 9.0 parts of anti-aging agent, 0.1 to 0.3 part of scorch retarder CTP, 0.5 to 1.5 parts of sulfur and 1.5 to 2.0 parts of accelerant. The liquid reclaimed rubber not only replaces aromatic hydrocarbon oil as a plasticizer and reduces the use amount of raw rubber and carbon black, but also can realize partial functions of adding liquid rubber. The liquid reclaimed rubber is applied to the tire sidewall rubber material, all indexes can meet the requirements of the tire sidewall rubber material, and the raw materials and the processing cost are saved.

Description

technical field [0001] The invention relates to a tire rubber material, in particular to a tire side rubber material containing liquid reclaimed rubber and a preparation method thereof, belonging to the technical field of tire preparation. Background technique [0002] Liquid rubber is a kind of relative molecular weight between about 2000-10000, which is a viscous fluid liquid at room temperature. After proper chemical reaction, it can form a three-dimensional network structure, so as to obtain low-density rubber with similar physical and mechanical properties as vulcanized rubber. Polymer. The characteristics of liquid rubber are: first, the molecular weight should be appropriately small to maintain a fluid state; second, it must be able to produce cross-linking, and the physical and mechanical properties of the cross-linked product must reach the level of vulcanized rubber. From the perspective of processing level, liquid rubber can undergo chain growth or crosslinking r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L17/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06B60C1/00
CPCC08L7/00C08L9/00C08L17/00B60C1/0025C08L2205/035C08K2003/2296C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06
Inventor 戈风行史金炜张珠珠田卫东韩磊
Owner 宿迁绿金人橡塑机械有限公司
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