CN114571917A - High-performance composite rubber strip for self-sealing safety tire and production method thereof - Google Patents

High-performance composite rubber strip for self-sealing safety tire and production method thereof Download PDF

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Publication number
CN114571917A
CN114571917A CN202210301197.7A CN202210301197A CN114571917A CN 114571917 A CN114571917 A CN 114571917A CN 202210301197 A CN202210301197 A CN 202210301197A CN 114571917 A CN114571917 A CN 114571917A
Authority
CN
China
Prior art keywords
self
sealing
tire
supporting sheet
supporting
Prior art date
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.)
Withdrawn
Application number
CN202210301197.7A
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Chinese (zh)
Inventor
廖光标
郑巧莲
廖泽崧
廖祎怡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong Junbiao Self Sealing Safety Tire Technology Co ltd
Original Assignee
Nantong Junbiao Self Sealing Safety Tire Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nantong Junbiao Self Sealing Safety Tire Technology Co ltd filed Critical Nantong Junbiao Self Sealing Safety Tire Technology Co ltd
Priority to CN202210301197.7A priority Critical patent/CN114571917A/en
Publication of CN114571917A publication Critical patent/CN114571917A/en
Withdrawn legal-status Critical Current

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    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • 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
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C19/12—Puncture preventing arrangements
    • B60C19/127—Puncture preventing arrangements for inner tubes
    • 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
    • B29D2030/0695—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre the sealant being in the form of one wide strip, e.g. a patch

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

The invention relates to a high-performance composite rubber strip for a self-sealing safety tire, which comprises a self-sealing material layer and an elastic membrane arranged on the upper side of the self-sealing material layer, wherein the self-sealing material layer comprises a self-sealing filling material and a supporting sheet layer wrapped on one side, close to the elastic membrane, in the self-sealing filling material, the supporting sheet layer consists of a plurality of bowl-shaped supporting sheets, and the concave surfaces of the supporting sheets face to one side, far away from the elastic membrane; each supporting sheet is connected with the adjacent supporting sheet, and the connecting part is a weak point which is easy to break; the self-sealing rubber strip body is paved on the inner side of the tire to achieve the self-sealing effect of the tire; when the sharp part of the supporting sheet is pierced, the sharp part enters or slides into the depression of the supporting sheet, the supporting sheet bears the sharp part and enables the sharp part to jack the supporting sheet, and peripheral self-sealing filling materials are enabled to be close to the sharp part to form sealing.

Description

High-performance composite rubber strip for self-sealing safety tire and production method thereof
Technical Field
The invention belongs to the technical field of self-sealing materials, and particularly relates to a high-performance composite rubber strip for a self-sealing safety tire and a production method thereof.
Background
The phenomena of tire burst, lateral movement, uncontrollable and the like caused by the punctured tire are one of the greatest violences of a plurality of car accidents and are large enemies of the service life of the tire (the tire of many brands is not recommended to be used continuously after being repaired for 1-2 times).
With the development of science and technology, the run-flat tire which can still be air-tight after being punctured comes into operation and is more and more applied, but the air-tight run-flat tire is not expensive, and the complex process and the higher production cost are one of the reasons for the high price of the air-tight run-flat tire. Generally, the rubber protective layer used for preventing the tire from being pricked and leaking at present basically adopts spraying equipment to uniformly spray rubber on the inner wall of the tire, the inner wall of the tire is cleaned and polished before the rubber is sprayed, a release agent on the inner surface layer of the tire is completely treated, the treatment is improper or the cleaning and polishing are not in place, and the phenomena of rubber falling, flanging, displacement and rubber accumulation can be generated during the running of the tire; the tire inner liner is damaged by over-polishing, and the tire is easy to slowly release air; the spraying process requires very good fluidity of the glue, which is difficult to achieve when designing high temperature resistant glue formulations. In addition, the rubber material also needs to have good high temperature resistance, and if the rubber material with poor high temperature resistance is applied to a tire product, the phenomena of rubber material softening and rubber material strength deterioration are easily generated when the temperature of the tire is increased in the use process, so that the self-sealing and leakage-proof effects of the tire are invalid. The increase of the temperature can also reduce the adhesive property of the rubber material, so that the rubber material can fall off, turn over, shift and accumulate, and greater potential safety hazard is brought to the driving. Therefore, the sizing material protective layer prepared by the spraying process is high in cost and still has certain limitation in function.
The invention patent with patent number 201611088936X, entitled "method for manufacturing self-sealing tire and tire" discloses a method for orderly cleaning the inner side surface of the tire by using laser radiation pulses, which has less damage to the inner side surface of the tire and can better solve the problem caused by physical polishing of the inner wall of the tire.
The utility model discloses a leak-proof tire with a sealant inner layer, a rubber particle layer and a self-sealing glue outer layer, wherein the rubber particle layer is arranged between the self-sealing glue inner layer and the self-sealing glue outer layer, and the utility model is named as a leak-proof tire with the patent number of 2016203129023; the rubber particles of the rubber particle layer are spherical rubber particles. When the tire crack is great, the crack can be filled rapidly to spherical rubber granule in the rubber granule layer under the effect of tire internal pressure, and also can flow into from sealing the outer layer thereupon, with rubber granule and crack department fully bonding, solid-state rubber granule has higher intensity, can effectively prevent tire gas leakage. The spherical rubber particles can enter the crack to block the crack when the crack of the tire is large, but in actual operation, the self-sealing effect of the spherical rubber particles cannot reach the level of self-sealing glue easily, and the spherical rubber particles have large fluidity, so that the phenomena of glue falling, flanging, displacement and glue accumulation are easily caused in long-term use.
Disclosure of Invention
The invention aims to provide a high-performance composite rubber strip for a self-sealing safety tire and a production method thereof, wherein the high-performance composite rubber strip is low in processing and using cost, convenient to maintain and replace and good in self-sealing effect.
In order to solve the technical problem, the invention discloses a high-performance composite rubber strip for a self-sealing safety tire, which comprises a self-sealing material layer and an elastic membrane arranged on the upper side of the self-sealing material layer, wherein the self-sealing material layer comprises a self-sealing filling material and a supporting sheet layer wrapped on one side, close to the elastic membrane, of the self-sealing filling material, the supporting sheet layer consists of a plurality of bowl-shaped supporting sheets, and the concave surfaces of the supporting sheets face to one side, far away from the elastic membrane; each supporting sheet is connected with the adjacent supporting sheet, and the connection part is a weak point easy to break; the self-sealing rubber strip body is used for being paved on the inner side of a tire to achieve the self-sealing effect of the tire.
Preferably, the supporting sheets are connected with the adjacent supporting sheets in a point shape, and gaps are formed between the adjacent supporting sheets.
Preferably, the supporting sheets are connected with the adjacent supporting sheets, and no gap is formed between the adjacent supporting sheets.
Preferably, the supporting sheet is a pre-shaping sheet which is rectangular and concave integrally.
Preferably, the blade is a rigid or semi-rigid material that is supportive and not easily punctured.
Preferably, the self-sealing filling material comprises the components: thermoplastic elastomer, synthetic rubber, plasticizing softener, tackifying resin, antioxidant, color masterbatch and reinforcing agent.
A preparation method of the self-sealing filling material comprises the following steps:
adding a plasticizing softener and an antioxidant into a reaction kettle, heating to 150-.
A production method of a high-performance composite rubber strip for a self-sealing safety tire comprises the following steps:
laying an elastic film on a plane, placing a supporting sheet layer with gaps between supporting sheets on the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, laying, and cooling and laying a release film for later use; when the support sheet layer is placed, the concave surface of the support sheet faces upwards.
A production method of a high-performance composite rubber strip for a self-sealing safety tire comprises the following steps:
spreading an elastic film on a plane, brushing glue, placing a gapless supporting sheet layer between supporting sheets on the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, spreading, and cooling and spreading a release film for later use; when the support sheet layer is placed, the concave surface of the support sheet faces upwards.
The high-performance composite rubber strip for the self-sealing safety tire and the production method thereof have the following advantages:
1. the supporting sheet can form armor type protection, when a small sharp part is punctured, the sharp part can enter or slide into a depression of the supporting sheet with high probability, the supporting sheet bears the sharp part, and the sharp part jacks up the supporting sheet.
2. When a sharp object penetrates into a tire, one or more supporting sheets are jacked up (generally one) after the sharp part meets the supporting sheets, the jacked supporting sheets are forced to be broken and connected with other supporting sheets, the supporting sheets are jacked up to drive the elastic membrane to locally bulge, under the action of the material and the elastic membrane, the self-sealing material layer around the locally bulge is gathered to the bulge, namely the sharp part, more self-sealing material layer is gathered around the sharp part and below the supporting sheets, and under the pressure inside the tire, a gap between the sharp object and the tire is sealed to achieve the self-sealing effect; in addition, when the sharp object is longer, even if the sharp object punctures the adhesive tape, the adhesive tape can also play certain self-sealing effect.
3. After the sharp object is pulled out, the jacked supporting sheet is disconnected with other supporting sheets, so that the supporting sheet cannot reset, but is pushed downwards under the action of the elastic film and the internal pressure of the tire, so that the self-sealing filling material in the bulge rapidly fills a gap left after the sharp object is pulled out and forms a seal, the jacked supporting sheet can be covered above the gap to form further protection, and the self-sealing filling material is prevented from being excessively extruded into the gap by overlarge tire pressure.
4. Need not to use expensive glue spraying production line, only need to handle tire inside the back paste the adhesive tape can, manufacturing cost is lower.
5. The adhesive tape is removable, prolongs self sealss tire's life, when reducing use cost, also environmental protection more.
Drawings
Fig. 1 is a schematic structural view of a high-performance composite rubber strip for a self-sealing safety tire.
FIG. 2 is a schematic diagram of three kinds of blades.
The reference numbers in the figures are: 1-self-sealing material layer, 2-elastic film, 3-self-sealing filling material, 4-supporting sheet layer and 5-supporting sheet.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
As shown in fig. 1-2, a high-performance composite rubber strip for a self-sealing safety tire comprises a self-sealing material layer 1 and an elastic membrane 2 arranged on the upper side of the self-sealing material layer, wherein the self-sealing material layer comprises a self-sealing filling material 3 and a supporting sheet layer 4 wrapped on one side of the self-sealing filling material, which is close to the elastic membrane, the supporting sheet layer is composed of a plurality of bowl-shaped supporting sheets 5, and the concave surfaces of the supporting sheets face to the side far away from the elastic membrane; each supporting sheet is connected with the adjacent supporting sheet, and the connection position is a weak point easy to break, for example, the connection position can be made into a form similar to an easy-tearing line; the support layer has certain support property for the whole rubber strip, so that the rubber strip is not easy to have the phenomena of rubber material falling, flanging, displacement and rubber material accumulation; the self-sealing rubber strip body is used for being paved on the inner side of a tire to achieve the self-sealing effect of the tire. The elastic film can be made of an elastic material such as fabric or rubber which is resistant to aging and has certain elasticity. The thickness of the self-sealing material layer depends on different application requirements and is generally not less than 5 mm.
The supporting sheets are connected with the adjacent supporting sheets in a point shape, and gaps are formed between the adjacent supporting sheets.
The supporting sheet is a pre-shaping sheet which is rectangular and concave integrally. The supporting sheet can be designed into a shape similar to a square disposable packing box or a square soap box, and the side surface of the supporting sheet is vertically arranged or has a certain gradient/radian; the occupied area of a single supporting sheet is not more than 2cm2It is preferable.
The supporting sheet is a hard or semi-hard material which has supporting property and is not easy to puncture, so that the supporting sheet can effectively block a punctured sharp object; the supporting sheet can be made of metal, plastic with higher melting point (such as higher than 220 ℃), and the like.
The self-sealing filling material comprises the following components: the self-sealing filling material comprises the following components: thermoplastic elastomer, synthetic rubber, plasticizing softener, tackifying resin, antioxidant, color masterbatch and reinforcing agent.
A preparation method of the self-sealing filling material comprises the following steps:
adding a plasticizing softener and an antioxidant into a reaction kettle, heating to 150-. The high-temperature-resistant softening point of the self-sealing filling material formed by the self-sealing slurry prepared by the method is between 160 ℃ and 250 ℃, the glass transition temperature is between-30 ℃ and-60 ℃, and the self-sealing filling material has good self-adhesion, high elongation, good flexibility and high cohesive strength.
A production method of a high-performance composite rubber strip for a self-sealing safety tire comprises the following steps:
laying an elastic film on a plane, placing a supporting sheet layer with gaps between supporting sheets on the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, laying, and cooling and laying a release film for later use; when the supporting sheet layer is placed, the concave surface of the supporting sheet faces upwards. The self-sealing slurry enters the gap between the elastic membrane and the supporting sheet through the gap between the supporting sheets, so that the elastic membrane and the supporting sheet are adhered.
During production, the inner wall of the tire is cleaned firstly, then the inner wall of the tire is subjected to surface treatment in a slight polishing or laser mode, the release film on the adhesive tape is torn off, the adhesive tape is attached to the inner wall of the tire, and the adhesive tape is tightly attached to the tire by using a roller and the like through light pressure. The rubber strip is mainly paved at the bottom of the inner cavity of the tire, and the paving significance of the side surface of the inner cavity of the tire is not large.
The rubber strip is difficult to avoid aging after being used for a period of time, if the service life of the tire is still longer at the moment, the old rubber strip can be stripped off to replace the new rubber strip, the use cost is reduced, and the environment is more friendly.
The adhesive tape can be widely applied to full-series all-steel or semi-steel vacuum tires, including car tires, truck tires, passenger bus tires, special vehicle tires and motorcycle tires, and the thickness of the self-sealing material layer can be correspondingly changed aiming at the tires with different purposes and different strengths. It is worth explaining that the self-sealing device has a good self-sealing effect on small and point-shaped tire punctures, has a poor self-sealing effect on linear and planar severe tire punctures, and is recommended to be directly replaced when the severe tire punctures.
Example 2
Similar to example 1, the difference is that the supporting sheet is connected with the adjacent supporting sheet, and no gap is formed between the adjacent supporting sheets.
Correspondingly, the production method of the high-performance composite rubber strip for the self-sealing safety tire comprises the following steps:
spreading an elastic film on a plane, brushing glue, placing a supporting sheet layer without a gap between supporting sheets on the elastic film to bond the supporting sheet layer with the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, and cooling and spreading a release film for later use; when the support sheet layer is placed, the concave surface of the support sheet faces upwards.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.

Claims (9)

1. A high-performance composite rubber strip for a self-sealing safety tire is characterized by comprising a self-sealing material layer and an elastic membrane arranged on the upper side of the self-sealing material layer, wherein the self-sealing material layer comprises a self-sealing filling material and a supporting sheet layer wrapped on one side, close to the elastic membrane, of the self-sealing filling material, the supporting sheet layer consists of a plurality of bowl-shaped supporting sheets, and the concave surfaces of the supporting sheets face to the side far away from the elastic membrane; each supporting sheet is connected with the adjacent supporting sheet, and the connection part is a weak point easy to break; the self-sealing rubber strip body is used for being paved on the inner side of the tire to achieve the self-sealing effect of the tire.
2. The high-performance composite rubber strip for the self-sealing safety tire as claimed in claim 1, wherein the supporting sheets are connected with the adjacent supporting sheets in a point shape, and gaps are formed between the adjacent supporting sheets.
3. The high performance composite strip for self-sealing run-flat tires according to claim 1, wherein the blade is connected to the adjacent blade, and there is no gap between the adjacent blades.
4. The high-performance composite rubber strip for the self-sealing safety tire according to claim 2 or 3, wherein the supporting sheet is a pre-shaped sheet which is rectangular and concave as a whole.
5. The high-performance composite strip for a self-sealing safety tire as claimed in claim 4, wherein the said blade is a rigid or semi-rigid material with support and resistance to puncture.
6. A high performance composite strip for self-sealing safety tires according to claim 1, characterized in that said self-sealing filling material comprises the components: thermoplastic elastomer, synthetic rubber, plasticizing softener, tackifying resin, antioxidant, color master batch and reinforcing agent.
7. The preparation method of the self-sealing filling material is characterized by comprising the following steps of:
adding a plasticizing softener and an antioxidant into a reaction kettle, heating to 150-.
8. A production method of a high-performance composite rubber strip for a self-sealing safety tire is characterized by comprising the following steps:
laying an elastic film on a plane, placing a supporting sheet layer with gaps between supporting sheets on the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, laying, and cooling and laying a release film for later use; when the support sheet layer is placed, the concave surface of the support sheet faces upwards.
9. A production method of a high-performance composite rubber strip for a self-sealing safety tire is characterized by comprising the following steps:
spreading an elastic film on a plane, brushing glue, placing a gapless supporting sheet layer between supporting sheets on the elastic film, pouring self-sealing slurry, automatically leveling or mechanically processing, spreading, and cooling and spreading a release film for later use; when the supporting sheet layer is placed, the concave surface of the supporting sheet faces upwards.
CN202210301197.7A 2022-03-26 2022-03-26 High-performance composite rubber strip for self-sealing safety tire and production method thereof Withdrawn CN114571917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210301197.7A CN114571917A (en) 2022-03-26 2022-03-26 High-performance composite rubber strip for self-sealing safety tire and production method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210301197.7A CN114571917A (en) 2022-03-26 2022-03-26 High-performance composite rubber strip for self-sealing safety tire and production method thereof

Publications (1)

Publication Number Publication Date
CN114571917A true CN114571917A (en) 2022-06-03

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Family Applications (1)

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CN202210301197.7A Withdrawn CN114571917A (en) 2022-03-26 2022-03-26 High-performance composite rubber strip for self-sealing safety tire and production method thereof

Country Status (1)

Country Link
CN (1) CN114571917A (en)

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Application publication date: 20220603