CN110903521A - Preparation method of rubber for automobile tires - Google Patents
Preparation method of rubber for automobile tires Download PDFInfo
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- CN110903521A CN110903521A CN201911166353.8A CN201911166353A CN110903521A CN 110903521 A CN110903521 A CN 110903521A CN 201911166353 A CN201911166353 A CN 201911166353A CN 110903521 A CN110903521 A CN 110903521A
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- nitrile rubber
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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
- C08L9/02—Copolymers with acrylonitrile
- C08L9/04—Latex
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- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- 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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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a preparation method of rubber for automobile tires, which is specifically carried out according to the following steps: step 1, adding hydroxyl silicone oil into nitrile rubber latex, and placing the nitrile rubber latex in an open mill for plasticizing and mixing rubber; step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding conductive powder, sodium dodecyl benzene sulfonate and zinc oxide, and uniformly mixing; step 3, adding a vulcanizing agent and stearic acid, and carrying out vulcanization treatment to obtain the piezoelectric composite material; and 4, putting the piezoelectric composite material into a tunnel furnace for curing to obtain a rubber finished product, wherein in order to ensure the electrical continuity, a large amount of conductive powder is added into the nitrile rubber, so that the formed conductive rubber has high hardness, good flexibility, high tearing strength and breaking strength, simple process and high preparation efficiency, and can be produced and applied in a large scale.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing, and relates to a preparation method of rubber for automobile tires.
Background
A tire is a ground-rolling circular ring-shaped elastic rubber article mounted on various vehicles or machines. Generally mounted on a metal rim, and is capable of supporting a vehicle body, buffering external impact, achieving contact with a road surface and ensuring the driving performance of a vehicle. The tyre is usually used under complicated and harsh conditions, and bears various deformations, loads, forces and high and low temperature effects during running, so that the rubber for manufacturing the tyre has higher bearing performance, traction performance, buffering performance, low rolling resistance and heat generation, and the conductive rubber is prepared by uniformly distributing conductive particles such as silver-plated glass, silver-plated aluminum, silver and the like in silicon rubber and enabling the conductive particles to be contacted through pressure so as to achieve good conductive performance. Both military and commercial applications have been developed where the primary function is to seal and electromagnetically shield.
Disclosure of Invention
The invention aims to provide a preparation method of rubber for automobile tires, which solves the problems of high damping coefficient and poor conductivity of rubber in the prior art.
The technical scheme adopted by the invention is that the preparation method of the rubber for the automobile tire specifically comprises the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, and placing the nitrile rubber latex in an open mill for plasticizing and mixing rubber;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding conductive powder, sodium dodecyl benzene sulfonate and zinc oxide, and uniformly mixing to obtain a rubber compound;
step 3, adding a vulcanizing agent and stearic acid into the rubber compound obtained in the step 2, and carrying out vulcanization treatment to obtain a piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, and after curing is finished, putting the piezoelectric composite material into an oven for secondary curing to obtain a rubber finished product.
In the step 1, the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1: 0.05-0.07, the plastication time is 10-20 min, and the plastication temperature is 50-80 ℃.
In the step 2, the mass ratio of the conductive powder to the nitrile rubber is 1: 3-5, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1: 0.01-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.2-0.3, the mixing time is 30-60 min, and the mixing temperature is 50-70 ℃.
In the step 3, the mass ratio of the nitrile rubber to the vulcanizing agent is 1: 0.02-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.4-0.6, the vulcanizing time is 15-30 min, and the vulcanizing temperature is 150-180 ℃.
In the step 4, the first curing time is 30-60 s, the first curing temperature is 180-200 ℃, the second curing time is 4-5 h, and the second curing temperature is 120-150 ℃.
The conductive powder is any one of pure silver powder, silver-plated glass powder and aluminum-plated silver powder.
The vulcanizing agent is a peroxide vulcanizing agent.
The conductive rubber has the beneficial effects that in order to ensure the electrical continuity, a large amount of conductive powder is added into the nitrile rubber compound, the formed conductive rubber has high hardness and good flexibility, the tearing strength and the breaking strength are high, the rubber has the conductive characteristic, and piezoelectric charges are easy to transfer and dissipate, so that the conversion efficiency of electricity and heat is improved, the vibration energy is more forcefully converted into heat energy to be dissipated, the damping coefficient of the rubber is improved, and the electrical continuity and the sealing performance are improved.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to a preparation method of rubber for automobile tires, which is specifically carried out according to the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, and placing the nitrile rubber latex in an open mill for plasticizing and mixing rubber;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding conductive powder, sodium dodecyl benzene sulfonate and zinc oxide, and uniformly mixing to obtain a rubber compound;
step 3, adding a vulcanizing agent and stearic acid into the rubber compound obtained in the step 2, and carrying out vulcanization treatment to obtain a piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, and after curing is finished, putting the piezoelectric composite material into an oven for secondary curing to obtain a rubber finished product.
In the step 1, the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1: 0.05-0.07, the plastication time is 10-20 min, and the plastication temperature is 50-80 ℃.
In the step 2, the mass ratio of the conductive powder to the nitrile rubber is 1: 3-5, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1: 0.01-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.2-0.3, the mixing time is 30-60 min, and the mixing temperature is 50-70 ℃.
In the step 3, the mass ratio of the nitrile rubber to the vulcanizing agent is 1: 0.02-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.4-0.6, the vulcanizing time is 15-30 min, and the vulcanizing temperature is 150-180 ℃.
In the step 4, the first curing time is 30-60 s, the first curing temperature is 180-200 ℃, the second curing time is 4-5 h, and the second curing temperature is 120-150 ℃.
The conductive powder is any one of pure silver powder, silver-plated glass powder and aluminum-plated silver powder.
The vulcanizing agent is a peroxide vulcanizing agent.
When a certain volume part of the conductive particles filled in the conductive rubber prepared by the invention are filled, the conductive particles are mutually contacted to form an electronic continuous state, when an external electromagnetic field reaches the outside of the conductive rubber, strong electromagnetic waves are struck on free electrons of the conductive particles, the free electrons freely move, the free electrons form an electromagnetic field opposite to the external electromagnetic field in the moving process, the internal electromagnetic field and the external electromagnetic field are mutually offset, and the effect of weakening electromagnetic interference waves is achieved.
Example 1
A preparation method of rubber for automobile tires specifically comprises the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, wherein the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1:0.05, placing the nitrile rubber latex and the hydroxyl silicone oil into an open mill for plastifying and mixing rubber, wherein the plastifying and mixing rubber time is 20min, and the plastifying and mixing rubber temperature is 50 ℃;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding pure silver powder, sodium dodecyl benzene sulfonate and zinc oxide, wherein the mass ratio of the pure silver powder to the nitrile rubber is 1:5, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1:0.01, the mass ratio of the nitrile rubber to the zinc oxide is 1:0.3, uniformly mixing, mixing for 30min, and mixing at the temperature of 70 ℃ to obtain mixed rubber;
step 3, adding a vulcanizing agent and stearic acid into the mixed rubber obtained in the step 2, carrying out vulcanization treatment on the mixture with the mass ratio of the nitrile rubber to the vulcanizing agent being 1:0.02 and the mass ratio of the nitrile rubber to the zinc oxide being 1:0.6, wherein the vulcanization time is 15min and the vulcanization temperature is 180 ℃ to obtain the piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, wherein the primary curing time is 30s, the primary curing temperature is 200 ℃, after the curing is finished, putting the piezoelectric composite material into an oven for secondary curing, the secondary curing time is 4h, and the secondary curing temperature is 150 ℃, so as to obtain a rubber finished product.
Example 2
A preparation method of rubber for automobile tires specifically comprises the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, wherein the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1:0.055, and placing the nitrile rubber latex and the hydroxyl silicone oil into an open mill for plastifying and mixing rubber, wherein the plastifying and mixing rubber time is 12min, and the plastifying and mixing rubber temperature is 50 ℃;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding silver-plated glass powder, sodium dodecyl benzene sulfonate and zinc oxide, wherein the mass ratio of the silver-plated glass powder to the nitrile rubber is 1:5, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1:0.03, the mass ratio of the nitrile rubber to the zinc oxide is 1:0.3, uniformly mixing, wherein the mixing time is 45min, and the mixing temperature is 70 ℃, so as to obtain a rubber compound;
step 3, adding a vulcanizing agent and stearic acid into the mixed rubber obtained in the step 2, carrying out vulcanization treatment on the mixture with the mass ratio of the nitrile rubber to the vulcanizing agent being 1:0.02 and the mass ratio of the nitrile rubber to the zinc oxide being 1:0.6, wherein the vulcanization time is 20min and the vulcanization temperature is 180 ℃ to obtain the piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, wherein the primary curing time is 30s, the primary curing temperature is 200 ℃, after the curing is finished, putting the piezoelectric composite material into an oven for secondary curing, the secondary curing time is 4h, and the secondary curing temperature is 150 ℃, so as to obtain a rubber finished product.
Example 3
A preparation method of rubber for automobile tires specifically comprises the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, wherein the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1:0.06, placing the nitrile rubber latex and the hydroxyl silicone oil into an open mill for plastifying and mixing rubber, wherein the plastifying and mixing rubber time is 15min, and the plastifying and mixing rubber temperature is 75 ℃;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding aluminum plating silver powder, sodium dodecyl benzene sulfonate and zinc oxide, wherein the mass ratio of the aluminum plating silver powder to the nitrile rubber is 1:4, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1:0.02, the mass ratio of the nitrile rubber to the zinc oxide is 1:0.25, uniformly mixing, wherein the mixing time is 50min, and the mixing temperature is 66 ℃, so as to obtain a rubber compound;
step 3, adding a vulcanizing agent and stearic acid into the mixed rubber obtained in the step 2, carrying out vulcanization treatment on the mixture with the mass ratio of the nitrile rubber to the vulcanizing agent being 1:0.03 and the mass ratio of the nitrile rubber to the zinc oxide being 1:0.5, wherein the vulcanization time is 25min and the vulcanization temperature is 160 ℃ to obtain the piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, wherein the primary curing time is 40s, the primary curing temperature is 185 ℃, after the curing is finished, putting the piezoelectric composite material into an oven for secondary curing, the secondary curing time is 4.5h, and the secondary curing temperature is 125 ℃, so as to obtain a rubber finished product.
Example 4
A preparation method of rubber for automobile tires specifically comprises the following steps:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, wherein the mass ratio of the nitrile rubber latex to the hydroxyl silicone oil is 1:0.07, placing the nitrile rubber latex and the hydroxyl silicone oil into an open mill for plastication, wherein the plastication time is 10min, and the temperature of the plastication is 80 ℃;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding pure silver powder, sodium dodecyl benzene sulfonate and zinc oxide, wherein the mass ratio of the pure silver powder to the nitrile rubber is 1:3, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1:0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1:0.2, uniformly mixing, wherein the mixing time is 60min, and the mixing temperature is 50 ℃, so as to obtain mixed rubber;
step 3, adding a vulcanizing agent and stearic acid into the mixed rubber obtained in the step 2, carrying out vulcanization treatment on the mixture with the mass ratio of the nitrile rubber to the vulcanizing agent being 1:0.05 and the mass ratio of the nitrile rubber to the zinc oxide being 1:0.4, wherein the vulcanization time is 30min and the vulcanization temperature is 150 ℃ to obtain the piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, wherein the primary curing time is 60s, the primary curing temperature is 180 ℃, after the curing is finished, putting the piezoelectric composite material into an oven for secondary curing, the secondary curing time is 5h, and the secondary curing temperature is 120 ℃, so as to obtain a rubber finished product.
In order to ensure the electrical continuity, a large amount of conductive powder is added into the nitrile rubber compound, the formed conductive rubber has high hardness, good flexibility and high tearing strength and breaking strength, has conductive characteristics, and is easy to transfer and dissipate piezoelectric charges, so that the conversion efficiency of electricity and heat is improved, the vibration energy is converted into heat energy to be dissipated, the damping coefficient of the rubber is improved, and the electrical continuity and the sealing property are improved.
Claims (7)
1. The preparation method of the rubber for the automobile tire is characterized by comprising the following steps of:
step 1, adding hydroxyl silicone oil into nitrile rubber latex, and placing the nitrile rubber latex in an open mill for plasticizing and mixing rubber;
step 2, putting the nitrile rubber obtained in the step 1 into an internal mixer, adding conductive powder, sodium dodecyl benzene sulfonate and zinc oxide, and uniformly mixing to obtain a rubber compound;
step 3, adding a vulcanizing agent and stearic acid into the rubber compound obtained in the step 2, and carrying out vulcanization treatment to obtain a piezoelectric composite material;
and 4, putting the piezoelectric composite material into a tunnel furnace for primary curing, and after curing is finished, putting the piezoelectric composite material into an oven for secondary curing to obtain a rubber finished product.
2. The preparation method of the rubber for the automobile tire according to claim 1, wherein in the step 1, the mass ratio of the nitrile rubber latex to the hydroxy silicone oil is 1: 0.05-0.07, the plastication time is 10-20 min, and the plastication temperature is 50-80 ℃.
3. The preparation method of the rubber for the automobile tire according to claim 1, wherein in the step 2, the mass ratio of the conductive powder to the nitrile rubber is 1: 3-5, the mass ratio of the nitrile rubber to the sodium dodecyl benzene sulfonate is 1: 0.01-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.2-0.3, the mixing time is 30-60 min, and the mixing temperature is 50-70 ℃.
4. The preparation method of the rubber for the automobile tire according to claim 1, wherein in the step 3, the mass ratio of the nitrile rubber to the vulcanizing agent is 1: 0.02-0.05, the mass ratio of the nitrile rubber to the zinc oxide is 1: 0.4-0.6, the vulcanizing time is 15-30 min, and the vulcanizing temperature is 150-180 ℃.
5. The preparation method of the rubber for the automobile tire according to claim 1, wherein in the step 4, the first curing time is 30-60 s, the first curing temperature is 180-200 ℃, the second curing time is 4-5 h, and the second curing temperature is 120-150 ℃.
6. The method for preparing rubber for automobile tires according to claim 1, characterized in that the conductive powder is any one of pure silver powder, silver-plated glass powder and aluminum-plated silver powder.
7. The method for preparing rubber for automobile tires according to claim 1, characterized in that the vulcanizing agent is a peroxide vulcanizing agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166353.8A CN110903521A (en) | 2019-11-25 | 2019-11-25 | Preparation method of rubber for automobile tires |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911166353.8A CN110903521A (en) | 2019-11-25 | 2019-11-25 | Preparation method of rubber for automobile tires |
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| CN110903521A true CN110903521A (en) | 2020-03-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724187A (en) * | 2008-10-31 | 2010-06-09 | 中国石油化工股份有限公司 | Rubber composition and preparation method thereof |
| CN102746669A (en) * | 2012-07-25 | 2012-10-24 | 南通矽利康橡塑材料有限公司 | Self-lubricating electroconductive rubber |
| CN102816355A (en) * | 2011-06-10 | 2012-12-12 | 北京橡胶工业研究设计院 | Electroconductive rubber and preparation method thereof |
| CN105504410A (en) * | 2016-01-28 | 2016-04-20 | 深圳市慧瑞电子材料有限公司 | Conductive rubber material for flexible sensor as well as preparation method and application for conductive rubber material |
| CN108530898A (en) * | 2018-03-09 | 2018-09-14 | 中国电子科技集团公司第三十三研究所 | A kind of tear-proof high-flexibility conductive rubber and preparation method thereof |
-
2019
- 2019-11-25 CN CN201911166353.8A patent/CN110903521A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724187A (en) * | 2008-10-31 | 2010-06-09 | 中国石油化工股份有限公司 | Rubber composition and preparation method thereof |
| CN102816355A (en) * | 2011-06-10 | 2012-12-12 | 北京橡胶工业研究设计院 | Electroconductive rubber and preparation method thereof |
| CN102746669A (en) * | 2012-07-25 | 2012-10-24 | 南通矽利康橡塑材料有限公司 | Self-lubricating electroconductive rubber |
| CN105504410A (en) * | 2016-01-28 | 2016-04-20 | 深圳市慧瑞电子材料有限公司 | Conductive rubber material for flexible sensor as well as preparation method and application for conductive rubber material |
| CN108530898A (en) * | 2018-03-09 | 2018-09-14 | 中国电子科技集团公司第三十三研究所 | A kind of tear-proof high-flexibility conductive rubber and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴群 等: "《电磁兼容原理与技术》", 30 June 2010, 哈尔滨工业大学出版社 * |
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Application publication date: 20200324 |