CN114536833A - Preparation method of integrally vulcanized self-sealing tire - Google Patents
Preparation method of integrally vulcanized self-sealing tire Download PDFInfo
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- CN114536833A CN114536833A CN202210263619.6A CN202210263619A CN114536833A CN 114536833 A CN114536833 A CN 114536833A CN 202210263619 A CN202210263619 A CN 202210263619A CN 114536833 A CN114536833 A CN 114536833A
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- 238000007789 sealing Methods 0.000 title claims abstract description 110
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims abstract description 37
- 238000010030 laminating Methods 0.000 claims abstract description 27
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000002775 capsule Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 77
- 229920001971 elastomer Polymers 0.000 claims description 49
- 230000007704 transition Effects 0.000 claims description 19
- 238000004073 vulcanization Methods 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 8
- 229920005557 bromobutyl Polymers 0.000 claims description 5
- 244000043261 Hevea brasiliensis Species 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 229920006271 aliphatic hydrocarbon resin Polymers 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920003052 natural elastomer Polymers 0.000 claims description 4
- 229920001194 natural rubber Polymers 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- -1 tert-butyl phenolic resin Chemical compound 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 241000283216 Phocidae Species 0.000 claims 1
- 239000010410 layer Substances 0.000 description 26
- 239000003566 sealing material Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 230000007547 defect Effects 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
- B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
- B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
- B29D2030/0686—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a preparation method of an integrally vulcanized self-sealing tire, which relates to the technical field of self-sealing tire production and comprises the following steps: s1, shrinking a drum of a laminating drum, sleeving an annular composite self-sealing film into the laminating drum, expanding the drum after centering, enabling the annular composite self-sealing film to be tightly attached to the laminating drum and positioned, uncovering a protective film, and molding a tire blank to obtain a tire blank with the inner tire being attached with the annular composite self-sealing film; s2, treating the surface of the vulcanizing capsule by using a release agent, coating the tire blank release agent on the surface of an annular composite self-sealing film on the tire blank, conveying the tire blank with the tire liner attached with the annular composite self-sealing film into a vulcanizing machine, and shaping and vulcanizing by adopting a low-pressure shaping method to obtain a vulcanized self-sealing tire; and S3, parking and cooling the vulcanized self-sealing tire to prepare the self-sealing tire.
Description
Technical Field
The invention relates to the technical field of self-sealing tire production, in particular to a preparation method of an integrally vulcanized self-sealing tire.
Background
At present, the production of self-sealing tires of all-steel tubeless tires is still blank, and in the whole service cycle of all-steel tubeless tires, the repair rate of the tires generated by puncture is about 5%, and the potential safety hazards generated by the reduction of the bearing capacity caused by puncture pressure loss are more. The self-sealing all-steel tire capable of automatically repairing the puncture wound of the tire and avoiding the tire from being damaged due to pressure loss is urgently needed in the market.
The commercial semisteel self-sealing tire is produced in a spraying mode or a coating mode on the commercial tire, and the self-sealing material is sprayed or extruded out of a rubber strip at a high temperature of 120-250 ℃ to be coated on the inner surface of the processed tire to form a coating layer, so that the self-sealing effect is achieved. Due to the limitation of a manufacturing process, the self-sealing glue and a tire joint surface form an isolation bonding interface and are difficult to be effectively combined, high-temperature spraying is adopted, accumulated heat of spraying materials has adverse effects on a tire matrix, the performance of the tire is reduced, and the tire liner is thinned through a surface treatment part, so that the local air tightness is reduced.
At present, no method for industrially producing the self-sealing tire by molding the self-sealing material in a tire blank and co-vulcanizing the self-sealing material and the tire by adopting a non-spraying mode or a non-coating mode exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of an integrally vulcanized self-sealing tire, which adopts a non-spraying mode and a non-coating mode to form a self-sealing material in a tire blank and carry out co-vulcanization with the tire, so that the prepared self-sealing tire has no difference with a mother tire in performance and has excellent self-sealing tire performance.
One purpose of the invention is to protect an annular composite self-sealing rubber sheet, which consists of a transition layer rubber material A, a self-sealing rubber material B and a protective material, wherein the protective material is one of a protective material C and a protective material D;
the transition layer rubber material A comprises the following raw material components in parts by weight: 30-40 parts of natural rubber, 50-70 parts of brominated butyl rubber, 35-45 parts of carbon black, 0.1-1 part of accelerator, 0.02-0.50 part of sulfur, 3-6 parts of tert-butyl phenolic resin, 2 parts of stearic acid, 5-8 parts of homogenizing agent, 2-4 parts of C5 resin, 2-4 parts of environment-friendly oil and 0.2-1 part of zinc oxide;
the transition layer rubber material A has the following technical characteristics: the base material is the same as the self-sealing rubber material and the tire inner liner rubber material and is butyl rubber or brominated butyl rubber, a formula of a partial vulcanization system of 10-60% is adopted, a vulcanized cross-linked part can be effectively cross-linked with the tire parent inner liner, an uncross-linked part can be effectively fused with the self-sealing material to form a tight combination, and the self-sealing rubber material composite piece is ensured not to fall off and flow and lose efficacy in the whole using period.
The protective material C is a low-temperature PE film; the protective material D is an inner liner rubber material of a tire blank.
Preferably, said self-sealing compound B has a Mooney viscosity ML1+440 to 80 at 40 ℃ and ML1+4The temperature of 100 ℃ is 3-10 ℃.
Preferably, the melting point of the low-temperature PE film is 80-110 ℃.
Preferably, the preparation method of the annular composite self-sealing rubber sheet comprises the following steps: and sequentially laminating and pressing the protective material C or the protective material D, the self-sealing sizing material B, the transition layer sizing material A and the protective film from top to bottom.
Preferably, the elongation rates of the transition layer rubber material A, the self-sealing rubber material B and the protective material are all more than 220%.
The invention also aims to protect a preparation method of the integrally vulcanized self-sealing tire, which adopts the annular composite self-sealing rubber sheet and comprises the following steps:
s1, shrinking a drum of a laminating drum, sleeving an annular composite self-sealing film into the laminating drum, expanding the drum after centering, enabling the annular composite self-sealing film to be tightly attached to the laminating drum and positioned, uncovering a protective film, and molding a tire blank to obtain a tire blank with the inner tire being attached with the annular composite self-sealing film;
s2, treating the surface of the vulcanizing capsule by using a release agent, coating the tire blank release agent on the surface of an annular composite self-sealing film on the tire blank, conveying the tire blank with the tire liner attached with the annular composite self-sealing film into a vulcanizing machine, shaping by adopting a low-pressure shaping method, and vulcanizing to obtain a vulcanized self-sealing tire;
s3, parking and cooling the vulcanized self-sealing tire to obtain the self-sealing tire;
the laminating drum comprises an upper-layer drum plate and a bottom-layer drum plate, the bottom-layer drum plate is a whole drum plate, the upper-layer drum plate is symmetrically arranged on the left side and the right side of the bottom-layer drum plate, the upper-layer drum plate is in sliding fit with the bottom-layer drum plate, and a middle groove with adjustable width is formed between the two upper-layer drum plates; a processing cover plate matched with the cross section shape of the middle groove is arranged in the middle groove; and one end of the upper drum plate opposite to the upper drum plate is provided with an inclined plane which inclines outwards.
Preferably, in step S2, the pressure for shaping by the low-pressure shaping method is 30 to 80 kpa; the vulcanization conditions are that the external temperature is 140-170 ℃, the internal temperature is 150-210 ℃, and the vulcanization time is 30-90 minutes.
Preferably, in step S3, the parking time is 30 to 90 minutes.
Preferably, the thickness of the upper-layer drum plate is 8-15 mm, and the width of the middle groove is 150-350 mm;
the diameter of the contracted laminating drum is 50-65 mm smaller than the diameter of the uncontracted laminating drum.
The invention has the beneficial effects that:
(1) the preparation method of the integrally vulcanized self-sealing tire adopts a non-spraying mode and a non-coating mode, the self-sealing material is formed in the tire blank and is vulcanized together with the tire, and the prepared self-sealing tire has the advantages that the performance is not different from that of a female tire, and meanwhile, the performance of the self-sealing tire is excellent.
(2) The preparation method of the integrally vulcanized self-sealing tire can be used for completing the industrial production of the integrally vulcanized self-sealing tire, a puncture-proof protective layer which is firmly combined is formed, the integrally vulcanized self-sealing tire does not fall off or flow in use, the product performance is excellent, and particularly a female tire cannot be damaged, so that the tire produced by the preparation method provided by the invention is safe and reliable, is the first choice for running in complex road conditions, meets the test method and standard requirements of GB/T38510-2020, GB/T4501 and GB9744, meets the customer requirements, and has high commercial value.
(3) The laminating drum adopted by the preparation method provided by the invention adopts double-layer drum plates, the bottom drum plate is a whole drum plate, the upper drum plate is arranged in a bilateral symmetry manner, the thickness of the upper drum plate is the material thickness of a self-sealing material in the tire manufacturing process, and the width of a middle groove between the two upper drum plates can be changed due to the sliding fit of the upper drum plate and the bottom drum plate, so that the production of a certain series of products can be met, the materials are ensured to be flat and easy to position on the drum, and the quality of the produced products is higher; has higher practical value and popularization value.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a sectional view of a fit drum in an embodiment of the present invention;
FIG. 2 is a schematic view of a circular composite self-sealing film structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a self-sealing tyre obtained in accordance with an embodiment of the present invention;
in the figure, 100-a bottom drum plate, 110-an upper drum plate, 111-an inclined plane, 120-a middle groove and 200-a processing cover plate; a-transition layer rubber material A, B-self-sealing rubber material B, C-protective material C, D-protective material D, E-protective material, F-annular composite self-sealing rubber sheet and G-self-sealing tyre.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1
The embodiment provides a ring-shaped composite self-sealing rubber sheet, which is composed of a transition layer rubber material A, a self-sealing rubber material B and a protective material C, as shown in fig. 2. The thicknesses of the transition layer rubber material A, the self-sealing rubber material B and the protective material C are respectively 0.6mm, 12.0mm and 0.06mm (the thickness ratio is 10: 200: 1);
the transition layer rubber material A comprises the following raw material components in parts by weight: 40 parts of natural rubber, 60 parts of brominated butyl rubber, 40 parts of carbon black, 0.25 part of accelerator, 0.05 part of sulfur, 4 parts of tert-butyl phenolic resin, 2 parts of stearic acid, 7 parts of homogenizing agent, 3 parts of C5 resin, 3 parts of environment-friendly oil and 0.50 part of zinc oxide;
mooney viscosity ML of self-sealing compound B1+456 ML at 40 ℃1+45 at 100 ℃.
The protective material C is a low-temperature PE film, and the melting point of the low-temperature PE film is 100 ℃.
The preparation method of the annular composite self-sealing rubber sheet comprises the following steps: and the protective material C, the self-sealing sizing material B, the transition layer sizing material A and the protective film are sequentially laminated and pressed from top to bottom.
The elongation rates of the transition layer rubber material A, the self-sealing rubber material B and the protective material are all larger than 220%.
The embodiment also provides a preparation method of the integrally vulcanized self-sealing tire, which adopts the annular composite self-sealing rubber sheet and comprises the following steps:
s1, shrinking a drum of a laminating drum, sleeving an annular composite self-sealing film into the laminating drum, expanding the drum after centering, enabling the annular composite self-sealing film to be tightly attached to the laminating drum and positioned, uncovering a protective film, and molding a tire blank to obtain a tire blank with the inner tire being attached with the annular composite self-sealing film;
s2, treating the surface of the curing bladder by using a separant, coating the separant on the surface of the annular composite self-sealing rubber sheet on the tire blank, conveying the tire blank with the annular composite self-sealing rubber sheet attached to the tire inner into a vulcanizing machine, shaping by adopting a low-pressure shaping method, and vulcanizing to obtain a vulcanized self-sealing tire;
s3, parking and cooling the vulcanized self-sealing tire to obtain the self-sealing tire as shown in figure 3;
wherein, as shown in fig. 1, the laminating drum includes upper drum plate (110) and bottom drum plate (100), bottom drum plate (100) be a whole drum plate, two lateral surfaces of bottom drum plate (100) are equipped with upper drum plate (110) that bilateral symmetry arranged, upper drum plate (110) and bottom drum plate (100) sliding fit form width adjustable middle recess (120) between two upper drum plates, the relative one end of two upper drum plates (110) is equipped with inclined plane (111) that leans out.
The thickness of the upper drum plate (110) is 10 mm. The width of the middle groove (120) is 250 mm. The diameter of the bonding drum after shrinkage is 55mm smaller than that when not shrunk.
In step S2, the pressure for shaping by adopting a low-pressure shaping method is 50 kpa;
the vulcanization conditions were 145 ℃ for the external temperature, 193 ℃ for the internal temperature and 55 minutes for the vulcanization time.
In step S3, the parking time was 55 minutes.
Example 2
The embodiment provides a ring-shaped composite self-sealing rubber sheet, which is composed of a transition layer rubber material A, a self-sealing rubber material B and a protective material D as shown in fig. 2. The thicknesses of the transition layer rubber material A, the self-sealing rubber material B and the protective material D are respectively 0.6mm, 12.0mm and 1.2mm (the thickness ratio is 1: 20: 2).
The transition layer rubber material A comprises the following raw material components in parts by weight: 40 parts of natural rubber, 60 parts of brominated butyl rubber, 40 parts of carbon black, 0.25 part of accelerator, 0.05 part of sulfur, 4 parts of tert-butyl phenolic resin, 2 parts of stearic acid, 7 parts of homogenizing agent, 3 parts of C5 resin, 3 parts of environment-friendly oil and 0.50 part of zinc oxide;
mooney viscosity ML of self-sealing compound B1+456 ML at 40 ℃1+45 at 100 ℃.
The protective material D is an inner liner rubber material of the tire blank.
The preparation method of the annular composite self-sealing rubber sheet comprises the following steps: and the protective material D, the self-sealing sizing material B, the transition layer sizing material A and the protective film are sequentially laminated and pressed from top to bottom.
The elongation rates of the transition layer rubber material A, the self-sealing rubber material B and the protective material are all larger than 220%.
The embodiment also provides a preparation method of the integrally vulcanized self-sealing tire, which adopts the annular composite self-sealing rubber sheet and comprises the following steps:
s1, shrinking a drum of a laminating drum, sleeving an annular composite self-sealing film into the laminating drum, expanding the drum after centering, enabling the annular composite self-sealing film to be tightly attached to the laminating drum and positioned, uncovering a protective film, and molding a tire blank to obtain a tire blank with the inner tire being attached with the annular composite self-sealing film;
s2, treating the surface of the vulcanizing capsule by using a release agent, coating the tire blank release agent on the surface of an annular composite self-sealing film on the tire blank, conveying the tire blank with the tire liner attached with the annular composite self-sealing film into a vulcanizing machine, shaping by adopting a low-pressure shaping method, and vulcanizing to obtain a vulcanized self-sealing tire;
s3, parking and cooling the vulcanized self-sealing tire to obtain the self-sealing tire as shown in figure 3;
wherein, as shown in fig. 1, the laminating drum includes upper drum plate (110) and bottom drum plate (100), bottom drum plate (100) be a whole drum plate, two lateral surfaces of bottom drum plate (100) are equipped with upper drum plate (110) that bilateral symmetry arranged, upper drum plate (110) and bottom drum plate (100) sliding fit form width adjustable middle recess (120) between two upper drum plate (110), the relative one end of two upper drum plate (110) is equipped with inclined plane (111) that leans out.
The thickness of the upper drum plate (110) is 12 mm. The width of the middle groove (120) is 240 mm. The diameter of the bonding drum after shrinkage is 55mm smaller than that when not shrunk.
In step S2, the pressure for shaping by adopting a low-pressure shaping method is 60 kpa;
the vulcanization conditions were an external temperature of 143 ℃ and an internal temperature of 193 ℃ and a vulcanization time of 58 minutes.
In step S3, the parking time is 58 minutes.
Test examples
Testing of the performances of the self-sealing tyres obtained in examples 1-2
And (4) testing standard: GB/T38510-
And (3) testing results: see Table 1
TABLE 1
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. The utility model provides an annular compound self sealss film which characterized in that: the annular composite self-sealing rubber sheet consists of a transition layer rubber material A, a self-sealing rubber material B and a protective material, wherein the protective material is one of a protective material C and a protective material D; the transition layer rubber material A comprises the following raw material components in parts by weight: 30-40 parts of natural rubber, 50-70 parts of brominated butyl rubber, 35-45 parts of carbon black, 0.1-1 part of accelerator, 0.02-0.50 part of sulfur, 3-6 parts of tert-butyl phenolic resin, 2 parts of stearic acid, 5-8 parts of homogenizing agent, 2-4 parts of C5 resin, 2-4 parts of environment-friendly oil and 0.2-1 part of zinc oxide; the protective material C is a low-temperature PE film; the protective material D is an inner liner rubber material of a tire blank.
2. Root of herbaceous plantThe annular composite self-sealing film according to claim 1, wherein: mooney viscosity ML of self-sealing rubber material B1+440 to 80 at 40 ℃ and ML1+4The temperature of 100 ℃ is 3-10 ℃.
3. The annular composite self-sealing film according to claim 1, wherein: the melting point of the low-temperature PE film is 80-110 ℃.
4. The annular composite self-sealing film according to claim 1, wherein: the preparation method of the annular composite self-sealing rubber sheet comprises the following steps: and sequentially laminating and pressing the protective material C or the protective material D, the self-sealing sizing material B, the transition layer sizing material A and the protective film from top to bottom.
5. The annular composite self-sealing film according to claim 1, wherein: the elongation rates of the transition layer rubber material A, the self-sealing rubber material B and the protective material are all larger than 220%.
6. The preparation method of the integrally vulcanized self-sealing tire is characterized by comprising the following steps of: the annular composite self-sealing film of any one of claims 1-5 is prepared by the following steps: s1, shrinking a drum of a laminating drum, sleeving an annular composite self-sealing film into the laminating drum, expanding the drum after centering, enabling the annular composite self-sealing film to be tightly attached to the laminating drum and positioned, uncovering a protective film, and molding a tire blank to obtain a tire blank with the inner tire being attached with the annular composite self-sealing film; s2, treating the surface of the vulcanizing capsule by using a release agent, coating the tire blank release agent on the surface of an annular composite self-sealing film on the tire blank, conveying the tire blank with the tire liner attached with the annular composite self-sealing film into a vulcanizing machine, and shaping and vulcanizing by adopting a low-pressure shaping method to obtain a vulcanized self-sealing tire; s3, parking and cooling the vulcanized self-sealing tire to obtain the self-sealing tire;
the laminating drum comprises an upper-layer drum plate and a bottom-layer drum plate, the bottom-layer drum plate is a whole drum plate, the upper-layer drum plate is symmetrically arranged on the left side and the right side of the bottom-layer drum plate, the upper-layer drum plate is in sliding fit with the bottom-layer drum plate, and a middle groove with adjustable width is formed between the two upper-layer drum plates; a processing cover plate matched with the cross section shape of the middle groove is arranged in the middle groove; and one end of the upper drum plate opposite to the upper drum plate is provided with an inclined plane which inclines outwards.
7. Method for producing an integrally vulcanized self-sealing tyre according to claim 5, characterized in that: in the step S2, the pressure for shaping by adopting the low-pressure shaping method is 30-80 kpa; the vulcanization conditions are that the external temperature is 140-170 ℃, the internal temperature is 150-210 ℃, and the vulcanization time is 30-90 minutes.
8. Method for producing an integrally vulcanized self-sealing tyre according to claim 5, characterized in that: in step S3, the parking time is 30-90 minutes.
9. Method for producing an integrally vulcanized self-sealing tyre according to claim 5, characterized in that: the thickness of the upper-layer drum plate is 8-15 mm, the width of the middle groove is 150-350 mm, and the diameter of the contracted laminating drum is 50-65 mm smaller than that of the laminating drum when the laminating drum is not contracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP2010052181A (en) * | 2008-08-26 | 2010-03-11 | Sumitomo Rubber Ind Ltd | Method of manufacturing run flat tire and molding drum apparatus for it |
| FR2948606A1 (en) * | 2009-07-31 | 2011-02-04 | Michelin Soc Tech | Pneumatic tire comprises a self-sealing layer, an outer rubber tread, a reinforcing carcass, a gastight layer that is laid inwardly and connected to the reinforcing carcass, and an inwardly laid protective layer |
| CN103974823A (en) * | 2011-12-15 | 2014-08-06 | 倍耐力轮胎股份公司 | Method for controlling deposition of a layer of sealing polymeric material on a forming drum and process for producing self-sealing tyres for producing self-sealing tyres for vehicle wheels |
| CN105254965A (en) * | 2015-10-16 | 2016-01-20 | 赛轮金宇集团股份有限公司 | Inner liner compound with air permeation resistance and low cost and for pneumatic tire |
| CN105473320A (en) * | 2013-08-15 | 2016-04-06 | Vmi荷兰公司 | Drum for manufacturing belt and tread of a tire |
| CN106280043A (en) * | 2016-08-24 | 2017-01-04 | 山东新大陆橡胶科技股份有限公司 | Tire air-tight layer rubber composition and preparation method thereof |
| CN207565010U (en) * | 2017-12-07 | 2018-07-03 | 厦门洪海机械有限公司 | It is a kind of can reexpansion green tyres laminating drum |
| CN112208125A (en) * | 2020-09-29 | 2021-01-12 | 南通骏标自密封安全轮胎科技有限公司 | Processing technology of puncture-proof air-leakage-proof self-sealing rubber layer tire |
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| CN86100878A (en) * | 1985-01-22 | 1986-09-03 | 尤尼罗亚尔轮胎公司 | Self-styled cock wheel tire with tyre airtight layer steady arm |
| US4913209A (en) * | 1985-01-22 | 1990-04-03 | The Uniroyal Goodrich Tire Company | Sealant product, laminate thereof, and pneumatic tire constructed therewith |
| JP2010052181A (en) * | 2008-08-26 | 2010-03-11 | Sumitomo Rubber Ind Ltd | Method of manufacturing run flat tire and molding drum apparatus for it |
| FR2948606A1 (en) * | 2009-07-31 | 2011-02-04 | Michelin Soc Tech | Pneumatic tire comprises a self-sealing layer, an outer rubber tread, a reinforcing carcass, a gastight layer that is laid inwardly and connected to the reinforcing carcass, and an inwardly laid protective layer |
| CN103974823A (en) * | 2011-12-15 | 2014-08-06 | 倍耐力轮胎股份公司 | Method for controlling deposition of a layer of sealing polymeric material on a forming drum and process for producing self-sealing tyres for producing self-sealing tyres for vehicle wheels |
| CN105473320A (en) * | 2013-08-15 | 2016-04-06 | Vmi荷兰公司 | Drum for manufacturing belt and tread of a tire |
| CN105254965A (en) * | 2015-10-16 | 2016-01-20 | 赛轮金宇集团股份有限公司 | Inner liner compound with air permeation resistance and low cost and for pneumatic tire |
| CN106280043A (en) * | 2016-08-24 | 2017-01-04 | 山东新大陆橡胶科技股份有限公司 | Tire air-tight layer rubber composition and preparation method thereof |
| CN207565010U (en) * | 2017-12-07 | 2018-07-03 | 厦门洪海机械有限公司 | It is a kind of can reexpansion green tyres laminating drum |
| CN112208125A (en) * | 2020-09-29 | 2021-01-12 | 南通骏标自密封安全轮胎科技有限公司 | Processing technology of puncture-proof air-leakage-proof self-sealing rubber layer tire |
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