CN113861577A - Production process capable of automatically repairing butyl rubber inner tube - Google Patents

Production process capable of automatically repairing butyl rubber inner tube Download PDF

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Publication number
CN113861577A
CN113861577A CN202111133764.4A CN202111133764A CN113861577A CN 113861577 A CN113861577 A CN 113861577A CN 202111133764 A CN202111133764 A CN 202111133764A CN 113861577 A CN113861577 A CN 113861577A
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CN
China
Prior art keywords
rubber
inner tube
butyl rubber
parts
carbon
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.)
Pending
Application number
CN202111133764.4A
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Chinese (zh)
Inventor
郝纯涛
张留军
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 Shunchi Rubber Product Co ltd
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Nantong Shunchi Rubber Product 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 Shunchi Rubber Product Co ltd filed Critical Nantong Shunchi Rubber Product Co ltd
Priority to CN202111133764.4A priority Critical patent/CN113861577A/en
Publication of CN113861577A publication Critical patent/CN113861577A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00Producing tubular articles
    • B29D23/24Endless tubes, e.g. inner tubes for pneumatic tyres
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc

Abstract

The invention discloses a production process capable of automatically repairing a butyl rubber inner tube, which comprises the following steps of: banburying, namely banburying the raw materials in a banbury mixer; s2: mixing, namely conveying the internally mixed polymer obtained in the S1 to a roller space with a narrow roller spacing in a belt mode; s3: filtering the glue; s4: finally, putting the master batch compound obtained in the step S3 into an internal mixer again, and adding 20-30 parts of carbon/nitrogen organic compound to fully mix and internally mix the master batch compound with the internal mixer; according to the invention, the carbon/nitrogen organic compound is added in the final refining process of the butyl rubber inner tube production process, and the system has an ionic interaction with bromine radicals to enable the sheared brominated butyl rubber to be self-healed, so that a completely cut sample can keep the original characteristics after the self-healing process is applied, the self-healing capability of the butyl rubber inner tube is improved, and the repairing speed is accelerated.

Description

Production process capable of automatically repairing butyl rubber inner tube
Technical Field
The invention relates to the field of preparation of rubber products, in particular to a production process capable of automatically repairing a butyl rubber inner tube.
Background
Butyl rubber is one of the synthetic rubbers, synthesized from isobutylene and a small amount of isoprene. The finished product is not easy to leak, is generally used for manufacturing tires, and has good chemical stability and thermal stability, and most prominently air tightness and water tightness. The permeability to air is only 1/7 of natural rubber and 1/5 of styrene-butadiene rubber, while the permeability to steam is 1/200 of natural rubber and 1/140 of styrene-butadiene rubber, so that the rubber is mainly used for manufacturing various rubber products such as various inner tubes, steam tubes, water tires, dam bottoms, gaskets and the like.
The butyl rubber inner tube has the advantages of long service life of the tire crown, low rolling resistance, tear resistance, heat resistance, weather resistance, self-oxidation resistance and excellent environment adverse resistance, meanwhile, the butyl rubber inner tube has good air tightness, heat resistance, elasticity, aging resistance and small permanent deformation, and the rubber self-closing performance of the butyl rubber inner tube is good and high air tightness.
The existing butyl rubber inner tube can deform and wear when being used for a long time, although rubber has certain self-repairing capability, the repairing capability is limited, the shape of the inner tube can be repaired in an auxiliary manner by means of related equipment, and the operation is complex, so that the production process capable of automatically repairing the butyl rubber inner tube is required to be provided.
Disclosure of Invention
The invention aims to provide a production process capable of automatically repairing a butyl rubber inner tube, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of a butyl rubber inner tube capable of being automatically repaired is disclosed, and S1: banburying, namely banburying raw materials: 100-120 parts of butyl powerful rubber, 10-20 parts of vulcanized resin and 5-10 parts of paraffin oil are placed into an internal mixer, the temperature of a rotor and a machine body of the internal mixer is set to be 90 ℃, two-stage internal mixing is carried out, the polymer needs to be filtered in the first-stage internal mixing, and 3-5 parts of zinc oxide and 3-5 parts of stearic acid are added into the second-stage internal mixing to be mixed with the polymer;
s2: mixing, conveying the banburying polymer obtained in S1 to a roller with a narrow roller spacing in a belt manner, adding an antioxidant, an improver and 20-40 parts of carbon black into the initial roller at 35-55 ℃, adding silicone oil after mixing the carbon black, gradually increasing the roller spacing, cooling the roller, and finally adding a vulcanizing agent;
s3: filtering rubber, namely putting the polymer obtained after mixing in the step S2 into a cold feed type rubber filter of which the model is 150 for filtering, filtering out foreign impurities, carbon black agglomerates and undispersed rubber particles, and fully cooling the material after filtering out the impurities;
s4: finally, the master batch compound obtained in the step S3 is put into an internal mixer again, 20-30 parts of carbon/nitrogen organic compound are added to be fully mixed and internally mixed with the master batch compound, the internal mixing time is controlled to be 60-80 minutes, and after the carbon/nitrogen organic compound is added, the system can have the ionic interaction with bromine groups to enable the cut brominated butyl rubber to be self-healed;
s5: extruding, namely selecting a hot feeding screw extruder to extrude the finally-refined rubber material, maintaining a certain accumulation rubber on a feeding roller during extruding, and adjusting the size of a feeding rubber sheet according to the size of an inner tube required by actual production, wherein the temperature of the feeding rubber sheet is constant at 80-90 ℃;
s6: an air valve is arranged, and the cooled rubber material is provided with the air valve on the extrusion line;
s7: jointing, namely jointing the rubber material by using a jointing machine;
s8: freezing and forming, namely performing quick cooling on the crown part at the butt joint, and mechanically stretching and shaping the green tire tube;
s9: vulcanizing and inflating, namely inflating the molded tire cylinder by introducing hot air or steam, and heating the tire inside, wherein the common inflation pressure is 7-8kg/cm 2;
s10: and (7) packaging and warehousing.
Preferably, the formula proportion 1 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 100
Cured resin / / 10
Paraffin oil / / 5
Zinc oxide / / 3
Stearic acid / / 3
Carbon black / / 20
Carbon/nitrogen organic compounds / / 20
Preferably, the formula ratio 2 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 110
Cured resin / / 15
Paraffin oil / / 8
Zinc oxide / / 4
Stearic acid / / 4
Carbon black / / 30
Carbon/nitrogen organic compounds / / 25
Preferably, the formula proportion 3 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 120
Cured resin / / 20
Paraffin oil / / 10
Zinc oxide / / 5
Stearic acid / / 5
Carbon black / / 40
Carbon/nitrogen organic compounds / / 30
Preferably, in the banburying process of S1, the discharge outlet temperature of the mixer needs to be set to 100 ℃ to eliminate the sticking during the discharge of rubber.
Preferably, the carbon/nitrogen organic compound added in the S4 refining process can convert the bromine function of the butyl rubber into ionic imidazole brominated groups to form a reversible ionic association compound with physical crosslinking capacity, and the reversibility of the ionic association promotes the healing process through temperature or stress induced rearrangement, so that a completely cut sample can keep the original characteristics after the self-healing process is applied.
The invention has the technical effects and advantages that: a production process of a butyl rubber inner tube capable of being automatically repaired is characterized in that a carbon/nitrogen organic compound is added in a final refining process of the production process of the butyl rubber inner tube, a system has an ionic interaction with bromine radicals, and the sheared brominated butyl rubber can be self-repaired.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a production process capable of automatically repairing a butyl rubber inner tube, which comprises the following steps of S1: banburying, namely banburying raw materials: 100-120 parts of butyl powerful rubber, 10-20 parts of vulcanized resin and 5-10 parts of paraffin oil are placed into an internal mixer, the temperature of a rotor and a machine body of the internal mixer is set to be 90 ℃, two-stage internal mixing is carried out, the polymer needs to be filtered in the first-stage internal mixing, and 3-5 parts of zinc oxide and 3-5 parts of stearic acid are added into the second-stage internal mixing to be mixed with the polymer;
s2: mixing, conveying the banburying polymer obtained in S1 to a roller with a narrow roller spacing in a belt manner, adding an antioxidant, an improver and 20-40 parts of carbon black into the initial roller at 35-55 ℃, adding silicone oil after mixing the carbon black, gradually increasing the roller spacing, cooling the roller, and finally adding a vulcanizing agent;
s3: filtering rubber, namely putting the polymer obtained after mixing in the step S2 into a cold feed type rubber filter of which the model is 150 for filtering, filtering out foreign impurities, carbon black agglomerates and undispersed rubber particles, and fully cooling the material after filtering out the impurities;
s4: finally, the master batch compound obtained in the step S3 is put into an internal mixer again, 20-30 parts of carbon/nitrogen organic compound are added to be fully mixed and internally mixed with the master batch compound, the internal mixing time is controlled to be 60-80 minutes, and after the carbon/nitrogen organic compound is added, the system can have the ionic interaction with bromine groups to enable the cut brominated butyl rubber to be self-healed;
s5: extruding, namely selecting a hot feeding screw extruder to extrude the finally-refined rubber material, maintaining a certain accumulation rubber on a feeding roller during extruding, and adjusting the size of a feeding rubber sheet according to the size of an inner tube required by actual production, wherein the temperature of the feeding rubber sheet is constant at 80-90 ℃;
s6: an air valve is arranged, and the cooled rubber material is provided with the air valve on the extrusion line;
s7: jointing, namely jointing the rubber material by using a jointing machine;
s8: freezing and forming, namely performing quick cooling on the crown part at the butt joint, and mechanically stretching and shaping the green tire tube;
s9: vulcanizing and inflating, namely inflating the molded tire cylinder by introducing hot air or steam, and heating the tire inside, wherein the common inflation pressure is 7-8kg/cm 2;
s10: and (7) packaging and warehousing.
In the first embodiment, the formula proportion 1 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 100
Cured resin / / 10
Paraffin oil / / 5
Zinc oxide / / 3
Stearic acid / / 3
Carbon black / / 20
Carbon/nitrogen organic compounds / / 20
In the second embodiment, the formula ratio 2 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 110
Cured resin / / 15
Paraffin oil / / 8
Zinc oxide / / 4
Stearic acid / / 4
Carbon black / / 30
Carbon/blood pressure deviceNitrogen organic compound / / 25
In the third embodiment, the formula proportion 3 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight
Butyl reinforced rubber / / 120
Cured resin / / 20
Paraffin oil / / 10
Zinc oxide / / 5
Stearic acid / / 5
Carbon black / / 40
Carbon/nitrogen organic compounds / / 30
In the fourth embodiment, in the banburying process of S1, the temperature of the discharge port of the mixer needs to be set to 100 ℃ to eliminate the adhesion during rubber discharge, the carbon/nitrogen organic compound added in the S4 can convert the bromine function of the butyl rubber into ionic imidazole brominated groups to form a reversible ionic association compound with physical crosslinking capability, and the reversibility of the ionic association promotes the healing process through temperature or stress induced rearrangement, so that a completely cut sample can maintain its original characteristics after the self-healing process is applied.
In conclusion, the production process of the butyl rubber inner tube capable of automatically repairing provided by the invention has the advantages that the carbon/nitrogen organic compound is added in the final refining process of the production process of the butyl rubber inner tube, the system has an ionic interaction with bromine groups to enable the cut brominated butyl rubber to be self-healed, the bromine function of the butyl rubber is converted into ionic imidazole bromide groups to form reversible ionic association compounds with physical crosslinking capacity, the reversibility of ionic association promotes the healing process through temperature or stress induced rearrangement, so that a completely cut sample can keep the original characteristics after the self-healing process is applied, the self-repairing capacity of the butyl rubber inner tube is improved, and the repairing speed is accelerated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description of the specification.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A production process capable of automatically repairing a butyl rubber inner tube is characterized by comprising the following steps:
s1: banburying, namely banburying raw materials: 100-120 parts of butyl powerful rubber, 10-20 parts of vulcanized resin and 5-10 parts of paraffin oil are placed into an internal mixer, the temperature of a rotor and a machine body of the internal mixer is set to be 90 ℃, two-stage internal mixing is carried out, the polymer needs to be filtered in the first-stage internal mixing, and 3-5 parts of zinc oxide and 3-5 parts of stearic acid are added into the second-stage internal mixing to be mixed with the polymer;
s2: mixing, conveying the banburying polymer obtained in S1 to a roller with a narrow roller spacing in a belt manner, adding an antioxidant, an improver and 20-40 parts of carbon black into the initial roller at 35-55 ℃, adding silicone oil after mixing the carbon black, gradually increasing the roller spacing, cooling the roller, and finally adding a vulcanizing agent;
s3: filtering rubber, namely putting the polymer obtained after mixing in the step S2 into a cold feed type rubber filter of which the model is 150 for filtering, filtering out foreign impurities, carbon black agglomerates and undispersed rubber particles, and fully cooling the material after filtering out the impurities;
s4: finally, the master batch compound obtained in the step S3 is put into an internal mixer again, 20-30 parts of carbon/nitrogen organic compound are added to be fully mixed and internally mixed with the master batch compound, the internal mixing time is controlled to be 60-80 minutes, and after the carbon/nitrogen organic compound is added, the system can have the ionic interaction with bromine groups to enable the cut brominated butyl rubber to be self-healed;
s5: extruding, namely selecting a hot feeding screw extruder to extrude the finally-refined rubber material, maintaining a certain accumulation rubber on a feeding roller during extruding, and adjusting the size of a feeding rubber sheet according to the size of an inner tube required by actual production, wherein the temperature of the feeding rubber sheet is constant at 80-90 ℃;
s6: an air valve is arranged, and the cooled rubber material is provided with the air valve on the extrusion line;
s7: jointing, namely jointing the rubber material by using a jointing machine;
s8: freezing and forming, namely performing quick cooling on the crown part at the butt joint, and mechanically stretching and shaping the green tire tube;
s9: vulcanizing and inflating, namely inflating the molded tire cylinder by introducing hot air or steam, and heating the tire inside, wherein the common inflation pressure is 7-8kg/cm 2;
s10: and (7) packaging and warehousing.
2. The production process of the self-repairing butyl rubber inner tube as claimed in claim 1, wherein the formula ratio of the main raw materials of the butyl rubber inner tube is 1:
raw materials Variety of raw material Specific gravity of Parts by weight Butyl reinforced rubber / / 100 Cured resin / / 10 Paraffin oil / / 5 Zinc oxide / / 3 Stearic acid / / 3 Carbon black / / 20 Carbon/nitrogen organic compounds / / 20
3. The production process of the self-repairing butyl rubber inner tube as claimed in claim 1, wherein the formula ratio 2 of the main raw materials of the butyl rubber inner tube is as follows:
raw materials Variety of raw material Specific gravity of Parts by weight Butyl reinforced rubber / / 110 Cured resin / / 15 Paraffin oil / / 8 Zinc oxide / / 4 Stearic acid / / 4 Carbon black / / 30 Carbon/nitrogen organic compounds / / 25
4. The production process of the self-repairing butyl rubber inner tube as claimed in claim 1, wherein the formula ratio of the main raw materials of the butyl rubber inner tube is 3:
raw materials Variety of raw material Specific gravity of Parts by weight Butyl reinforced rubber / / 120 Cured resin / / 20 Paraffin oil / / 10 Zinc oxide / / 5 Stearic acid / / 5 Carbon black / / 40 Carbon/nitrogen organic compounds / / 30
5. The process of claim 1, wherein the discharge port of the mixer is set at 100 ℃ during the mixing process of S1 to eliminate the adhesion during rubber discharge.
6. The process according to claim 1, wherein the carbon/nitrogen organic compound added in the S4 is finally refined to convert the bromine function of the butyl rubber into ionic imidazole brominated groups to form a reversible ionic association compound with physical crosslinking capability, and the reversibility of the ionic association promotes the healing process through temperature or stress induced rearrangement, so that a completely cut sample can maintain the original characteristics after the self-healing process is applied.
CN202111133764.4A 2021-09-27 2021-09-27 Production process capable of automatically repairing butyl rubber inner tube Pending CN113861577A (en)

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Application Number Priority Date Filing Date Title
CN202111133764.4A CN113861577A (en) 2021-09-27 2021-09-27 Production process capable of automatically repairing butyl rubber inner tube

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Publication Number Publication Date
CN113861577A true CN113861577A (en) 2021-12-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114874512A (en) * 2022-06-14 2022-08-09 江苏顺隆轮胎有限公司 High-elasticity self-repairing inner tube material and preparation method thereof
CN114874512B (en) * 2022-06-14 2024-05-17 迪美威(江苏)运动器材有限公司 High-elasticity self-repairing inner tube material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0359087A (en) * 1989-07-28 1991-03-14 C I Kasei Co Ltd Tacky, water-swelling material for stopping water
CN107057136A (en) * 2017-05-26 2017-08-18 成都微熵科技有限公司 A kind of anti-skidding unvulcanized rubber material of self-healing property and preparation method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0359087A (en) * 1989-07-28 1991-03-14 C I Kasei Co Ltd Tacky, water-swelling material for stopping water
CN107057136A (en) * 2017-05-26 2017-08-18 成都微熵科技有限公司 A kind of anti-skidding unvulcanized rubber material of self-healing property and preparation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114874512A (en) * 2022-06-14 2022-08-09 江苏顺隆轮胎有限公司 High-elasticity self-repairing inner tube material and preparation method thereof
CN114874512B (en) * 2022-06-14 2024-05-17 迪美威(江苏)运动器材有限公司 High-elasticity self-repairing inner tube material and preparation method thereof

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Application publication date: 20211231