CN112574547A - Rubber composition for tire molding turn-up bladder - Google Patents
Rubber composition for tire molding turn-up bladder Download PDFInfo
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- CN112574547A CN112574547A CN202011464759.7A CN202011464759A CN112574547A CN 112574547 A CN112574547 A CN 112574547A CN 202011464759 A CN202011464759 A CN 202011464759A CN 112574547 A CN112574547 A CN 112574547A
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- Prior art keywords
- rubber
- parts
- weight
- carbon black
- bladder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 91
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- 238000000465 moulding Methods 0.000 title description 17
- 239000006229 carbon black Substances 0.000 claims abstract description 21
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 239000011593 sulfur Substances 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 8
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008117 stearic acid Substances 0.000 claims abstract description 8
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 239000013032 Hydrocarbon resin Substances 0.000 claims abstract description 7
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920006270 hydrocarbon resin Polymers 0.000 claims abstract description 7
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 6
- 229920005557 bromobutyl Polymers 0.000 claims abstract description 6
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 6
- 229920001194 natural rubber Polymers 0.000 claims abstract description 6
- 229920002635 polyurethane Polymers 0.000 claims abstract description 6
- 239000004814 polyurethane Substances 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- 239000002775 capsule Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000000306 component Substances 0.000 claims description 5
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical group C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 5
- 150000004945 aromatic hydrocarbons Chemical group 0.000 claims description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 abstract description 4
- 239000012188 paraffin wax Substances 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/283—Halogenated homo- or copolymers of iso-olefins
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- 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
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to a rubber composition for a tire forming turn-up bladder, which solves the technical problems that a tire forming isolation material is polluted and the quality of a tire is influenced, and comprises the following components: 10-90 parts of polyurethane, 10-90 parts of brominated butyl rubber and 10-90 parts of natural rubber; wherein the auxiliary agent includes 40 to 70 parts by weight of carbon black based on 100 parts by weight of the rubber component; 0.5-1.5 parts by weight of a thiazole accelerator; 0.5-3 parts by weight of magnesium oxide; 1-3 parts by weight of zinc oxide; 0.5-3 parts by weight of stearic acid; 0-3 parts of tackifying resin; 1-5 parts by weight of a rubber softener; 10-30 parts by weight of hydrocarbon resin; 0.5 to 5 parts by weight of sulfur. The invention can be widely applied to the radial tire forming and manufacturing process.
Description
Technical Field
The invention relates to the field of tire manufacturing, in particular to a rubber composition for a tire molding turn-up bladder and a rubber composition.
Background
The radial tire molding turn-up bladder is used for uniformly expanding under certain air pressure, and uniformly turning up and compacting tire body cord fabric and tire side through the turn-up bladder, so that no delaminating and bubble phenomena exist between a steel wire ring and the cord fabric and between the tire side and the cord fabric at the tire bead part of the tire, and 1 tire blank needs to be expanded, extruded and contracted once when being molded. In order to ensure that the sidewall and the tire body are firmly bonded, the sidewall rubber viscosity needs to be improved, the sidewall rubber viscosity is high, the molding operation is difficult due to the presence of a sidewall rubber bag in the molding process, and the molding quality of the radial tire is directly influenced by the viscosity of the surface of a molding turn-up rubber bag. The method has the advantages that the capsule is prevented from being adhered to the tire side in the forming process, paraffin is generally sprayed on the surface of the capsule at the contact position with the tire side rubber to reduce the viscosity, paraffin is sprayed on the surface of the forming reverse-wrapping capsule, paraffin powder causes environmental pollution to a production site, the labor intensity of operators is increased, the production efficiency is reduced, the cost of a single tire is increased, the paraffin is sometimes adhered to the surface of a compression roller in the forming process, and the paraffin is adhered to the surface of a rubber core during the tire bead pressing process or falls between a tire body and the tire side.
Disclosure of Invention
The invention aims to solve the technical problems that the existing tire forming isolation material is polluted and the quality of a tire is influenced, and provides a rubber composition for a tire forming turn-up bladder, which has good adhesive property and can still keep good isolation effect between the surface and sidewall rubber when the forming turn-up bladder is used.
The invention provides a rubber composition for a tire forming turn-up bladder, which comprises a rubber component and an auxiliary agent, wherein the rubber component comprises: 10-90 parts of polyurethane, 10-90 parts of brominated butyl rubber and 10-90 parts of natural rubber;
wherein the auxiliary agent comprises 40-70 parts by weight of carbon black based on 100 parts by weight of the rubber component; 0.5-1.5 parts by weight of a thiazole accelerator; 0.5-3 parts by weight of magnesium oxide; 1-3 parts by weight of zinc oxide; 0.5-3 parts by weight of stearic acid; 0-3 parts of tackifying resin; 1-5 parts by weight of a rubber softener; 10-30 parts by weight of hydrocarbon resin; 0.5 to 5 parts by weight of sulfur.
Preferably, the carbon black is one or more of N326 carbon black, N330 carbon black and N660 carbon black; the particle size of the carbon black is 20-40 nm.
Preferably, the thiazole accelerator is dibenzothiazyl disulfide; the tackifying resin is octyl tackifying resin; the rubber softener is aromatic hydrocarbon oil or naphthenic oil.
Preferably, the sulphur comprises ordinary sulphur or insoluble sulphur, the insoluble sulphur being IS-7520 or HDOT 20.
The invention also provides a method for manufacturing the rubber composition for the tire forming turn-up bladder, which comprises the following steps:
1) putting the rubber component, carbon black, magnesium oxide, stearic acid, tackifying resin and a rubber softener into a rubber internal mixer, mixing for 2-4 minutes at a rotating speed of 20-60 r/min to obtain a mixed rubber A, and controlling the rubber discharge temperature to be 130-160 ℃;
2) mixing a thiazole accelerator, sulfur and zinc oxide with the mixed rubber A, mixing for 1.5-2 minutes in a rubber internal mixer at the temperature of 60-90 ℃ at the rotating speed of 15-30 r/min, and controlling the rubber discharge temperature at 90-105 ℃ to obtain mixed rubber B;
3) and preparing the rubber compound B into a film with the thickness of 0.5-1.5 mm for preparing a formed turn-up capsule.
The invention has the beneficial effects that:
the rubber composition for the radial tire molding turn-up bladder has good adhesive property and can still keep good isolation effect between the surface and the sidewall rubber when the molding turn-up bladder is used; the application of the composition can ensure that the surface of the capsule in contact with the sidewall rubber in the molding process can meet the molding operation requirement without paraffin polishing, and also ensure that the sidewall rubber cannot slide down from the surface of the capsule in the expansion process of the capsule in the molding process, thereby reducing the production strength and the production cost.
Detailed Description
The present invention is further described below with reference to examples to enable those skilled in the art to easily practice the present invention.
Example 1:
1) putting 24kg of natural rubber, 64kg of brominated butyl rubber, 88kg of polyurethane, 1.6kg of magnesium oxide, 1.6kg of stearic acid, 48kg of N330 carbon black, 96kg of N660 carbon black, 4.8kg of tackifying resin, 8kg of hydrocarbon resin and 24kg of environment-friendly oil into a GK400 type rubber internal mixer, mixing for 2-3 minutes at the temperature of 60-120 ℃ at the rotating speed of 30-50 r/min, and controlling the rubber discharge temperature at 145-160 ℃ to obtain mixed rubber A;
2) mixing 2.4kg of dibenzothiazyl disulfide, 0.9kg of common sulfur and 2.7kg of zinc oxide with the mixed rubber A, mixing for 1.5-2 minutes at the rotating speed of 15-30 rpm in a GK270 type rubber internal mixer at the temperature of 60-90 ℃, and controlling the rubber discharge temperature at 90-105 ℃ to obtain mixed rubber B;
3) and (3) preparing an anti-sticking film with the thickness of 0.5-1.5 mm and the width of 150-300 mm from the mixed rubber B by using a three-roll calender, and coiling and storing the anti-sticking film by using plastic laying cloth for preparing a molded capsule.
The rubber composition prepared in this example was subjected to various performance tests, and the test results were as follows:
physical properties of the compound, see table 1:
| hardness (Shore type A), degree | 66 |
| Tensile elongation%,%) | 438 |
| Tensile strength at break, Mpa | 15.5 |
| 300% stress at definite elongation in MPa | 8.5 |
TABLE 1
The rubber material has the following service performance: the tire side does not stick in the molding process, the phenomenon of downward sliding of the tire side does not exist, and the use requirement is basically met.
And (3) manufacturing a formed reverse-wrapped capsule by using a formed capsule forming machine, attaching an anti-sticking film to a part needing anti-sticking on the surface of the formed reverse-wrapped capsule, and compacting by using a compression roller. The lower surface of the anti-sticking layer film needs to be uniformly coated with the adhesive cement in the process of manufacturing the formed capsule, so that the leakage brushing and the adhesive cement accumulation are avoided, and the delamination caused in the using process is avoided. In the process of adhering the anti-sticking layer film, the anti-sticking layer film is compacted by a compression roller, and the defects of air bubbles, pleats and the like are avoided. Due to the particularity of the anti-sticking layer rubber material, the leftover materials of the unvulcanized anti-sticking layer need to be stored independently and cannot be mixed into other rubber materials, so that the quality influence on other products is avoided.
Example 2:
1) putting 12kg of natural rubber, 102kg of brominated butyl rubber, 56kg of polyurethane, 0.85kg of magnesium oxide, 0.85kg of stearic acid, 68kg of N330 carbon black, 85kg of N660 carbon black, 8.5kg of tackifying resin, 11.9kg of hydrocarbon resin and 17kg of environment-friendly oil into a GK400 type rubber internal mixer, mixing for 2-3 minutes at the temperature of 60-120 ℃ at the rotating speed of 30-50 r/min, and controlling the rubber discharge temperature to 145-160 ℃ to obtain mixed rubber A;
2) mixing 3.4kg of dibenzothiazyl disulfide, 0.95kg of common sulfur and 2.85kg of zinc oxide with the mixed rubber A, mixing for 1.5-2 minutes at the rotating speed of 15-30 rpm in a GK270 type rubber internal mixer at the temperature of 60-90 ℃, and controlling the rubber discharge temperature at 90-105 ℃ to obtain mixed rubber B;
3) and preparing the rubber compound B into a rubber sheet with a certain thickness for preparing a molding capsule, namely preparing the rubber composition for the radial tire molding capsule.
Physical properties of the compound, see table 2:
| hardness (Shore type A), degree | 68 |
| Tensile elongation%,%) | 338 |
| Tensile strength at break, Mpa | 12.5 |
| 300% stress at definite elongation in MPa | 10.5 |
TABLE 2
The rubber material has the following service performance: the phenomenon of slight sidewall adhesion still exists in the forming process.
Example 3:
1) putting 25kg of natural rubber, 39kg of brominated butyl rubber, 96kg of polyurethane, 1.6kg of magnesium oxide, 1.6kg of stearic acid, 64kg of N330 carbon black, 64kg of N660 carbon black, 12.8kg of tackifying resin, 16kg of hydrocarbon resin and 32kg of environment-friendly oil into a GK400 type rubber internal mixer, mixing for 2-3 minutes at the temperature of 60-120 ℃ at the rotating speed of 30-50 r/min, and controlling the rubber discharge temperature at 130-160 ℃ to obtain mixed rubber A;
2) mixing 1.6kg of dibenzothiazyl disulfide, 0.85kg of common sulfur and 2.55kg of zinc oxide with the mixed rubber A, mixing for 1.5-2 minutes at the rotating speed of 15-30 rpm in a GK270 type rubber internal mixer at the temperature of 60-90 ℃, and controlling the rubber discharge temperature at 90-105 ℃ to obtain mixed rubber B;
3) and preparing the rubber compound B into a film with a certain thickness for preparing a molded capsule.
The proportioning range of each material can be properly adjusted according to the actual production condition in the proportioning range so as to achieve different characteristics of the rubber composition and meet various requirements on production. The rubber composition of this example was prepared simultaneously, and it was also possible to manufacture the rubber composition by various available tire rubber manufacturing methods.
Physical properties of the compound, see table 3:
| hardness (Shore type A), degree | 64 |
| Tensile elongation%,%) | 458 |
| Tensile strength at break, Mpa | 18.5 |
| 300% stress at definite elongation in MPa | 7.5 |
TABLE 3
The rubber material has the following service performance: the tire side sometimes slips down in the molding process.
The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. All changes, equivalents, modifications and the like which come within the scope of the invention as defined by the appended claims are intended to be embraced therein.
Claims (5)
1. The rubber composition for the tire forming turn-up bladder is characterized by comprising the following components in parts by weight: 10-90 parts of polyurethane, 10-90 parts of brominated butyl rubber and 10-90 parts of natural rubber;
wherein the auxiliary agent includes 40 to 70 parts by weight of carbon black based on 100 parts by weight of the rubber component; 0.5-1.5 parts by weight of a thiazole accelerator; 0.5-3 parts by weight of magnesium oxide; 1-3 parts by weight of zinc oxide; 0.5-3 parts by weight of stearic acid; 0-3 parts of tackifying resin; 1-5 parts by weight of a rubber softener; 10-30 parts by weight of hydrocarbon resin; 0.5 to 5 parts by weight of sulfur.
2. The rubber composition for a tire building turn-up bladder according to claim 1, wherein the carbon black is one or more of N326 carbon black, N330 carbon black and N660 carbon black; the particle size of the carbon black is 20-40 nm.
3. The rubber composition for a tire building turn-up bladder according to claim 1, wherein the thiazole accelerator is a dibenzothiazyl disulfide accelerator; the tackifying resin is octyl tackifying resin; the rubber softener is aromatic hydrocarbon oil or naphthenic oil.
4. The rubber composition for tire building turn-up bladder according to claim 1, wherein said sulfur comprises ordinary sulfur or insoluble sulfur, and said insoluble sulfur IS-7520 or HD OT 20.
5. A process for producing a rubber composition for a tire building turn-up bladder, characterized by using the rubber composition component for a tire building turn-up bladder as claimed in any one of claims 1 to 4, which comprises the steps of:
1) putting the rubber component, carbon black, magnesium oxide, stearic acid, tackifying resin, rubber softener and hydrocarbon resin into a rubber internal mixer, mixing for 2-4 minutes at the rotating speed of 20-60 rpm to obtain mixed rubber A, and controlling the rubber discharge temperature to be 130-160 ℃;
2) mixing a thiazole accelerator, sulfur and zinc oxide with the mixed rubber A, mixing for 1.5-2 minutes in a rubber internal mixer at the temperature of 60-90 ℃ at the rotating speed of 15-30 r/min, and controlling the rubber discharge temperature at 90-105 ℃ to obtain mixed rubber B;
3) and preparing the rubber compound B into a film with the thickness of 0.5-1.5 mm for preparing a formed turn-up capsule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464759.7A CN112574547A (en) | 2020-12-14 | 2020-12-14 | Rubber composition for tire molding turn-up bladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464759.7A CN112574547A (en) | 2020-12-14 | 2020-12-14 | Rubber composition for tire molding turn-up bladder |
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| Publication Number | Publication Date |
|---|---|
| CN112574547A true CN112574547A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464759.7A Pending CN112574547A (en) | 2020-12-14 | 2020-12-14 | Rubber composition for tire molding turn-up bladder |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2227705A1 (en) * | 1997-01-24 | 1998-07-24 | Bridgestone/Firestone, Inc. | Abrasion-resistant elastomeric member of a tire-building drum |
| WO2000046006A1 (en) * | 1999-02-02 | 2000-08-10 | Pirelli Pneumatici S.P.A. | Anti-tack bladder, anti-tack rubber and method for making and using same |
| CN102276861A (en) * | 2010-04-23 | 2011-12-14 | 横滨橡胶株式会社 | Method for manufacturing bladder for use in manufacturing tires |
| CN109702947A (en) * | 2018-12-27 | 2019-05-03 | 永一橡胶有限公司 | A kind of preparation method of tire building reverse-wrapped capsule utricule film |
-
2020
- 2020-12-14 CN CN202011464759.7A patent/CN112574547A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2227705A1 (en) * | 1997-01-24 | 1998-07-24 | Bridgestone/Firestone, Inc. | Abrasion-resistant elastomeric member of a tire-building drum |
| WO2000046006A1 (en) * | 1999-02-02 | 2000-08-10 | Pirelli Pneumatici S.P.A. | Anti-tack bladder, anti-tack rubber and method for making and using same |
| CN102276861A (en) * | 2010-04-23 | 2011-12-14 | 横滨橡胶株式会社 | Method for manufacturing bladder for use in manufacturing tires |
| CN109702947A (en) * | 2018-12-27 | 2019-05-03 | 永一橡胶有限公司 | A kind of preparation method of tire building reverse-wrapped capsule utricule film |
Non-Patent Citations (2)
| Title |
|---|
| 中国橡胶工业协会橡胶助剂专业委员会: "《中国橡胶助剂工业科技发展报告：2009》", 中国轻工业出版社, pages: 815 * |
| 橡胶工业原材料与装备简明手册编审委员会: "《橡胶工业原材料与装备简明手册》", 30 November 2016, 北京理工大学出版社, pages: 54 - 55 * |
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Application publication date: 20210330 |