CN114381053A - Self-cleaning type tread rubber material for mold - Google Patents
Self-cleaning type tread rubber material for mold Download PDFInfo
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- CN114381053A CN114381053A CN202210118723.6A CN202210118723A CN114381053A CN 114381053 A CN114381053 A CN 114381053A CN 202210118723 A CN202210118723 A CN 202210118723A CN 114381053 A CN114381053 A CN 114381053A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a self-cleaning type tread rubber material for a mold, wherein the tread rubber comprises a section of rubber and a final rubber; the first-stage adhesive comprises the following substances in parts by mass: general rubber, zinc oxide stearic acid, an anti-aging agent, microcrystalline wax with low molecular weight, wide carbon distribution and high isoparaffin content, medium and super carbon black, a resin softener, a homogeneous agent, and final rubber compound, wherein the general rubber comprises the following substances in parts by weight: first-stage glue, sulfur, an accelerant CZ and an anti-scorching agent CTP. The microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content is adopted to replace the common protective wax, and the resin softener replaces aromatic oil commonly used in a conventional tire industry main softening system, so that a formula vulcanization system is optimized; the comprehensive properties of the tread rubber material formula technology meet the use requirements of tires, and through the experimental demonstration of a vulcanization process, the tire tread rubber material cannot pollute a mold, can achieve the purpose of self-cleaning of the mold, avoids the mold cleaning process, saves the mold cleaning cost, and greatly improves the production efficiency.
Description
Technical Field
The invention relates to a tire rubber material, in particular to a self-cleaning type tire tread rubber material for a mold, and belongs to the field of rubber processing.
Background
During the vulcanization of the tire, various compounding agents such as an anti-aging agent and a softening agent in the rubber compound migrate from the rubber to the surface of the mold, and these migrating substances adhere to and deposit on the surface of the mold, so that the mold is contaminated, and the appearance quality of the produced tire is affected. In the actual production process, in order to ensure the product quality, the mold is cleaned regularly, the method cannot completely ensure the appearance quality of the tire, the production efficiency is seriously influenced, and the production cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, microcrystalline wax with low molecular weight, wide carbon distribution and high isoparaffin content is added into tread rubber of a tire, a resin softening agent is used for replacing aromatic oil, a formula vulcanization system is optimized, a fine wax film is formed between the tire and a mold in advance by the precipitation of the microcrystalline wax, the pollution of the precipitation of other compounding agents such as an anti-aging agent and the like to the mold is prevented, the friction between rubber materials and the mold is reduced, rubber precipitates cannot be accumulated on the surface of the mold, the vulcanization speed of the rubber materials is increased, rubber molecular chains are quickly crosslinked in the vulcanization process, the precipitation of the compounding agents polluting various matched molds is inhibited, the mold is not polluted, and the purpose of the formula of the self-cleaning rubber material of the mold is achieved.
The invention is realized by the following technical scheme: a self-cleaning type tread rubber material for a mold comprises a section of rubber and a final rubber;
the first-stage adhesive comprises the following substances in parts by mass: general purpose rubber, 100; 4-6 parts of zinc oxide; stearic acid, 2.5-4; 3-5 parts of an anti-aging agent; low molecular weight, wide carbon number distribution, high content of isoparaffin microcrystalline wax, 2.5-4; medium super carbon black N220, 55-65; 8-11 parts of resin softening agent; homogeneous agent, 2-4;
the final rubber compound comprises the following substances in parts by weight: one segment of glue, 172-; 2.5-3.5 parts of sulfur; 1.2-2.2 of accelerant CZ; 0.3-1 parts of scorch retarder CTP.
The preferable scheme of the self-cleaning type tread rubber material of the mold is as follows: the general rubber is as follows: any one or two or more of SMR-20, SBR1500 and BR9000 are mixed in any proportion.
The preferable scheme of the self-cleaning type tread rubber material of the mold is as follows: when the general purpose rubber is SBR1500, 10 parts of regenerated rubber is also added.
The invention has the advantages that: the microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content is adopted to replace the common protective wax, and the resin softener replaces aromatic oil commonly used in a conventional tire industry main softening system, so that a formula vulcanization system is optimized; the comprehensive properties of the tread rubber material formula technology meet the use requirements of tires, and through the experimental demonstration of a vulcanization process, the tire tread rubber material cannot pollute a mold, can achieve the purpose of self-cleaning of the mold, avoids the mold cleaning process, saves the mold cleaning cost, and greatly improves the production efficiency.
Drawings
FIG. 1 is a graph comparing self-cleaning after 200 tires have been produced by the mold;
FIG. 2 is a comparison of the appearance of the surface quality of a produced tire.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A self-cleaning type tread rubber material for a mold comprises a section of rubber and a final rubber; the first-stage adhesive comprises the following substances in parts by mass:
30 parts of SMR-2O; SBR1500, 50 parts; BR9000, 20 parts; 4 parts of zinc oxide; 2.5 parts of stearic acid;
1.5 parts of an anti-aging agent RD; 2.0 parts of anti-aging agent 4020;
2.5 parts of microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content;
62 parts of medium super carbon black N220; 9 parts of a softener; 2.5 parts of a homogeneous agent;
the final rubber compound comprises the following substances in parts by weight:
186 parts of first-stage adhesive; 2.5 parts of sulfur; 1.3 parts of accelerator NS; 0.2 part of antiscorching agent CTP.
The self-cleaning type tread rubber material for the mold is prepared by the tread rubber formula.
The mixing process of the invention comprises the following steps:
first-stage mixing:
adding sizing material, pressurizing fine material for 25s (rotation speed: 50 r/min), adding carbon black, pressurizing (rotation speed: 45 r/min) for 30s, adding oil, pressurizing for 30s, lifting bolt, pressing bolt for 20s, lifting bolt, pressing bolt for 15s, lifting bolt and removing glue.
A vulcanization process:
adding the sizing material, pressurizing for 20s (rotating speed: 20 r/min), lifting the bolt, pressing for 25s, lifting the bolt, pressing for 20s, lifting the bolt and removing the glue.
The performance comparison between the test data of the above formulation implementation and the common formulation is shown in the following table:
the data in the table show that the comprehensive physical and mechanical properties of the rubber compound in the formula of the embodiment, such as hardness, elongation at break, strength at break, 300% set elongation, abrasion, are not greatly different from the original formula, and the strength at break and the abrasion are slightly improved. The vulcanizing speed of the rubber material of the formula of the embodiment is higher than that of the original formula, so that the quick crosslinking of the rubber material is facilitated, the precipitation speed of pollutants on a mold in the tread rubber in the vulcanizing process is reduced, and the pollution of the mold is reduced.
Example 2
A self-cleaning type tread rubber material for a mold comprises a section of rubber and a final rubber; the first-stage adhesive comprises the following substances in parts by mass: 80 parts of SMR-2O; SBR1500, 20 parts; 5.5 parts of zinc oxide; 3 parts of stearic acid; 2 parts of an anti-aging agent RD;
2.5 parts of an anti-aging agent 4020; 3.5 parts of microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content;
medium super carbon black N220 in 56 weight portions; a softener, 8; 3 parts of a homogeneous agent;
the final rubber compound comprises the following substances in parts by weight:
first-stage glue: 182, sulfur: 2.9, accelerator NS: 1.2, scorch retarder CTP: 0.3.
The self-cleaning type tread rubber material for the mold is prepared by the tread rubber formula.
The mixing process of the invention comprises the following steps:
the performance comparison between the test data of the above formulation implementation and the common formulation is shown in the following table:
the data in the table shows that the overall physical and mechanical properties of the rubber material in the formula of the embodiment are not greatly different from those of the original formula, and the use requirement of the tread rubber formula is met. The vulcanization speed of the rubber compound of the formula in the embodiment is higher than that of the original formula.
Example 3
A self-cleaning type tread rubber material for a mold comprises a section of rubber and a final rubber; the first-stage adhesive comprises the following substances in parts by mass: SBR1500, 100 parts; 10 parts of reclaimed rubber; 5 parts of zinc oxide; 2 parts of stearic acid; 2 parts of an anti-aging agent RD;
2 parts of an anti-aging agent 4020; 3 parts of microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content;
medium super carbon black N220, 65 portions; 11 parts of a softener; 3.5 parts of a homogeneous agent;
the final rubber compound comprises the following substances in parts by weight:
203.5 parts of first-stage adhesive; 2.3 parts of sulfur; 1.5 parts of accelerator NS; 0.2 part of antiscorching agent CTP.
The self-cleaning type tread rubber material for the mold is prepared by the tread rubber formula.
The mixing process of the invention comprises the following steps:
the performance comparison between the test data of the above formulation implementation and the common formulation is shown in the following table:
the data in the table show that the comprehensive physical and mechanical properties of the rubber material in the formula of the embodiment are basically consistent with those of the original formula, the use requirement of the tread rubber formula is met, and the vulcanization speed of the rubber material in the formula of the embodiment is higher than that of the original formula.
Claims (3)
1. The self-cleaning type tire tread rubber material for the mold is characterized in that: the tread rubber comprises a section of rubber and final rubber;
the first-stage adhesive comprises the following substances in parts by mass: 100 parts of general rubber; 4-6 parts of zinc oxide; 2.5-4 parts of stearic acid; 3-5 parts of an anti-aging agent; 2.5-4 parts of microcrystalline wax with low molecular weight, wide carbon number distribution and high isoparaffin content; 55-65 parts of medium super carbon black N220; 8-11 parts of resin softening agent; 2-4 parts of a homogeneous agent;
the final rubber compound comprises the following substances in parts by weight: one-section glue, 172-193 parts; 2.5-3.5 parts of sulfur; 1.2-2.2 parts of accelerator CZ; 0.3-1 part of antiscorching agent CTP.
2. The self-cleaning mold tread compound of claim 1, wherein: the general rubber is as follows: any one or two or more of SMR-20, SBR1500 and BR9000 are mixed in any proportion.
3. The self-cleaning mold tread compound of claim 1, wherein: when the general purpose rubber is SBR1500, 10 parts of regenerated rubber is also added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118723.6A CN114381053A (en) | 2022-02-08 | 2022-02-08 | Self-cleaning type tread rubber material for mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118723.6A CN114381053A (en) | 2022-02-08 | 2022-02-08 | Self-cleaning type tread rubber material for mold |
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| CN114381053A true CN114381053A (en) | 2022-04-22 |
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| CN202210118723.6A Pending CN114381053A (en) | 2022-02-08 | 2022-02-08 | Self-cleaning type tread rubber material for mold |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6955199B1 (en) * | 2000-12-21 | 2005-10-18 | Fbt Enterprises, Inc. | Tire with non-marking tread |
| JP2008169296A (en) * | 2007-01-11 | 2008-07-24 | Bridgestone Corp | Rubber composition and pneumatic tire produced by using the same |
| CN103254472A (en) * | 2012-02-21 | 2013-08-21 | 北京橡胶工业研究设计院 | All-steel truck radical tire tread rubber and tire using it |
| JP2014105273A (en) * | 2012-11-27 | 2014-06-09 | Sumitomo Rubber Ind Ltd | Tread rubber composition for high-performance tire |
| CN104292521A (en) * | 2014-09-26 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | High-strength heat-resistant tread rubber composition and preparation method thereof |
| CN105384978A (en) * | 2015-12-23 | 2016-03-09 | 风神轮胎股份有限公司 | Environment-friendly off-the-road tire cut-resistant tread rubber |
| CN108102158A (en) * | 2017-12-22 | 2018-06-01 | 风神轮胎股份有限公司 | The fire-retardant tread mix of tire is used before a kind of metallic ore smelting furnace |
| CN112708173A (en) * | 2020-12-22 | 2021-04-27 | 贵州轮胎股份有限公司 | Ultra-high-thermal-conductivity all-steel radial giant tire tread rubber material and preparation method thereof |
-
2022
- 2022-02-08 CN CN202210118723.6A patent/CN114381053A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6955199B1 (en) * | 2000-12-21 | 2005-10-18 | Fbt Enterprises, Inc. | Tire with non-marking tread |
| JP2008169296A (en) * | 2007-01-11 | 2008-07-24 | Bridgestone Corp | Rubber composition and pneumatic tire produced by using the same |
| CN103254472A (en) * | 2012-02-21 | 2013-08-21 | 北京橡胶工业研究设计院 | All-steel truck radical tire tread rubber and tire using it |
| JP2014105273A (en) * | 2012-11-27 | 2014-06-09 | Sumitomo Rubber Ind Ltd | Tread rubber composition for high-performance tire |
| CN104292521A (en) * | 2014-09-26 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | High-strength heat-resistant tread rubber composition and preparation method thereof |
| CN105384978A (en) * | 2015-12-23 | 2016-03-09 | 风神轮胎股份有限公司 | Environment-friendly off-the-road tire cut-resistant tread rubber |
| CN108102158A (en) * | 2017-12-22 | 2018-06-01 | 风神轮胎股份有限公司 | The fire-retardant tread mix of tire is used before a kind of metallic ore smelting furnace |
| CN112708173A (en) * | 2020-12-22 | 2021-04-27 | 贵州轮胎股份有限公司 | Ultra-high-thermal-conductivity all-steel radial giant tire tread rubber material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 凌鼎钟等: "《橡胶配合剂》", vol. 1, 上海科学技术出版社, pages: 111 - 112 * |
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