CN111499936A - Preparation method of corrugated protective layer of radial aircraft tire - Google Patents
Preparation method of corrugated protective layer of radial aircraft tire Download PDFInfo
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- CN111499936A CN111499936A CN202010559838.XA CN202010559838A CN111499936A CN 111499936 A CN111499936 A CN 111499936A CN 202010559838 A CN202010559838 A CN 202010559838A CN 111499936 A CN111499936 A CN 111499936A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a preparation method of a corrugated protection layer of a radial aircraft tire, belonging to the technical field of aircraft tires, and the technical scheme comprises that 108 aramid fiber cords are arranged side by side, glue is coated on the aramid fiber cords up and down, and the corrugated protection layer with the thickness of 2.3-3.5mm is obtained by calendering; the aramid cord is para-aramid fiber, and dip liquid treatment is carried out on the aramid cord, wherein the dip liquid comprises rubber and activating liquid, and the mass ratio of the rubber to the activating liquid is 100: 1-30; the activating liquid comprises at least one of isocyanate, resorcinol formaldehyde resin, bismaleimide triazine and epoxy resin. The invention is applied to the radial aircraft tire, solves the problem that the existing preparation method of the radial aircraft tire framework material is difficult to produce the corrugated protection layer meeting the high performance requirement of the radial aircraft tire, and has the characteristics that the preparation method is simple, and the produced aircraft tire corrugated protection layer can meet the performance requirements of large load and ultrahigh speed of the tire.
Description
Technical Field
The invention belongs to the technical field of aircraft tires, and particularly relates to a preparation method of a corrugated protective layer of a radial aircraft tire.
Background
The framework material is a main stressed component of the aviation tire and bears inflation pressure, load and various stresses generated during operation. The performance of the framework material is directly related to the overall performance of the aircraft tire, and the requirement of the aircraft tire on the carcass framework material is very strict. The radial aircraft tire body uses 5-6 layers of rubber-coated cords, and also adopts a method of winding a belt strip by aramid fiber and nylon composite cords as a tire body belt layer. In order to further improve the performance requirements of the aircraft tire on large load resistance, large acceleration and large impact deformation, a layer of tire body reinforcing material needs to be designed outside the annular cylindrical belt layer, so that firstly, the damage performance of the tire on foreign object puncture resistance and mechanical damage resistance can be improved, and meanwhile, the framework structure of the tire body layer of the aircraft tire can be improved, and the function of protecting the winding belt layer is achieved. The corrugated protection layer is a special component used on the aircraft tire, can obviously improve the puncture-proof characteristic of the aircraft tire, and improves the overall performance of the aircraft tire.
However, the existing preparation method of the framework material of the radial aircraft tire is difficult to produce the corrugated protection layer meeting the high-performance requirement of the radial aircraft tire, and the preparation method of the corrugated protection layer for improving the performance of the belt structure of the radial aircraft tire body has great significance in order to optimize the tire body structure of the radial aircraft tire and enhance the technical performances of impact resistance, overload resistance and high speed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem that the existing preparation method of the radial aircraft tire framework material is difficult to produce the corrugated protection layer meeting the high performance requirement of the radial aircraft tire, and provides the preparation method of the radial aircraft tire corrugated protection layer, which has the advantages that the preparation method is simple, and the produced aircraft tire corrugated protection layer can meet the performance requirements of large load and ultrahigh speed of the tire.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows:
the invention provides a preparation method of a corrugated protective layer of a radial aircraft tire, which comprises the following steps:
108 aramid cords are arranged side by side, the aramid cords are coated with glue from top to bottom, and the corrugated protective layer with the thickness of 2.3-3.5mm is obtained through calendering;
the aramid cord is para-aramid fiber, and is subjected to dipping liquid treatment, wherein the dipping liquid comprises rubber and activating liquid, and the mass ratio of the rubber to the activating liquid is 100: 1-30; the activating liquid comprises at least one of isocyanate, resorcinol formaldehyde resin, bismaleimide triazine and epoxy resin.
Preferably, the aramid cord is formed by primary twisting and secondary twisting, and is formed by one-step forming through unidirectional S-direction twisting and one-step forming, so that the aramid cord with the diameter of 1.25-1.35mm is obtained.
Preferably, the aramid cord has an elongation at break of 3.5-6.5%, an elongation at 100N under constant load of 0.3-0.9%, a weight at constant length of 10930-11270 g/10000m, a coefficient of variation in breaking strength of not more than 5.0%, a breaking strength of not less than 1500N, a coefficient of variation in elongation at break of not more than 6.5%, a load at 1% constant elongation of not less than 150N, and a dry heat shrinkage of not more than 0.5%.
Preferably, the adhesive strength between the aramid cord and the coating rubber is more than or equal to 200N/10 mm.
Preferably, the coating comprises: 100 parts of matrix rubber, 40-50 parts of reinforcing agent, 5-7.5 parts of vulcanization activator, 2-4.5 parts of anti-aging agent, 1-1.8 parts of accelerator, 3-5 parts of insoluble sulfur, 1-2.5 parts of adhesive resin, 3-4.5 parts of methylene donor and 0.1-0.4 part of anti-scorching agent.
Preference is given toThe base rubber is standard smoked sheet rubber, the initial plastic value of the standard smoked sheet rubber is more than or equal to 40.0, the plastic retention index is more than or equal to 60.0, and the Mooney viscosity M L1+4 100℃83±10。
Preferably, the binder resin is 1.7 to 2.5 parts by weight, and the methylene donor is 3 to 4.5 parts by weight.
Preferably, the reinforcing agent is selected from carbon black, the vulcanization activator is selected from zinc oxide produced by an indirect method taking zinc ingots as raw materials, the anti-aging agent is selected from a mixture of p-phenylenediamine anti-aging agents and quinoline anti-aging agents, the accelerator is selected from N-tert-butyl-2-benzothiazole sulfonamide, the adhesive resin is selected from resorcinol formaldehyde resin, the methylene donor is selected from RA65, and the scorch retarder is selected from N-cyclohexyl thiophthalimide.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a preparation method of a corrugated protection layer of a radial aircraft tire, which has the characteristics of simple preparation method and capability of meeting the performance requirements of large load and ultrahigh speed of the tire by the produced corrugated protection layer of the aircraft tire.
Detailed Description
The technical solutions in the embodiments of the present invention will be fully described in detail below. It is obvious that the described embodiments are only some specific embodiments, not all embodiments, of the general technical solution of the present invention. All other embodiments, which can be derived by a person skilled in the art from the general idea of the invention, fall within the scope of protection of the invention.
The invention provides a preparation method of a corrugated protective layer of a radial aircraft tire, which comprises the following steps: 108 aramid cords are arranged side by side, the aramid cords are coated with glue from top to bottom, and the corrugated protective layer with the thickness of 2.3-3.5mm is obtained through calendering; the aramid cord is para-aramid fiber, and is subjected to dipping liquid treatment, wherein the dipping liquid comprises rubber and activating liquid, and the mass ratio of the rubber to the activating liquid is 100: 1-30; the activating liquid comprises at least one of isocyanate, resorcinol formaldehyde resin, bismaleimide triazine and epoxy resin. Further, the dipped aramid cord and the upper and lower coatings are pressed by a special calender to obtain the corrugated protective layer with the wave amplitude of 8-10mm and the wavelength of 28-32 mm. The technical scheme uses aramid fiber cords as main materials of the radial aircraft tire corrugated protective layer, and the materials have the performance characteristics of high tensile strength, higher tearing strength, low compression fatigue heat generation and higher stress at definite elongation. The material is used as a corrugated protective layer of the aviation radial tire, so that the quality problem of glue line separation or layer-to-layer separation of the corrugated protective layer can not occur at the position of the corrugated protective layer under the severe use conditions of high load and high speed of the aviation tire, and the tire is safe to use; furthermore, the para-aramid fiber (PPTA) has a linear molecular chain arrangement, which is totally called as: poly-p-phenylene terephthamide, a new kind of high-tech synthetic fibers, have super high strength, high modulus and high temperature resistant, acid and alkali resistant, fine performance such as light in weight, its intensity is greater than 25g/d, 5-6 times of steel wire, the modulus is 2-3 times of steel wire or glass fiber, the toughness is 2 times of steel wire, and the weight is about 1/5 of steel wire only, under 560 ℃ of temperature, do not decompose, do not melt, have good insulating property and ageing resistance, have very long life cycle. The production process requires three processes: polymerization, filament spinning, and tow spinning. The porosity among fibers of the dipped aramid cord is below 50, good adhesive force can be obtained, the cord does not need to be subjected to heat treatment, the cord has high thermal stability, is insoluble and non-combustible, can be subjected to oxidative degradation at the temperature of 400-430 ℃, has high melting point (500 ℃), high modulus, high strength and high strength at high temperature, and is an ideal framework material for radial aircraft tires.
In a preferred embodiment, the aramid cord is formed by primary twisting and secondary twisting, and is formed in one step by adopting same-direction S-direction twisting and forming, so that the aramid cord with the diameter of 1.25-1.35mm is obtained. Specifically, the specification model of the aramid cord is 3360dtex/3, and the aramid cord is formed by twisting a first twist of 180-fold 210T/m and a second twist of 180-fold 210T/m.
In a preferred embodiment, the aramid cord has an elongation at break of 3.5-6.5%, an elongation at 100N under load of 0.3-0.9%, a weight at fixed length of 10930-11270 g/10000m, a coefficient of variation in breaking strength of 5.0% or less, a breaking strength of 1500N or more, a coefficient of variation in elongation at break of 6.5% or less, a load at 1% under load of 150N or more, and a dry heat shrinkage of 0.5% or less. The technical scheme further limits various performance indexes of the aramid cord, is favorable for ensuring the stable performance of the pressed corrugated protection layer, better plays the roles of simulating puncture, improving the stress distribution of the framework structure of the carcass layer of the aircraft tire and protecting the winding belted layer.
In a preferred embodiment, the adhesive strength of the aramid cord and the coating is more than or equal to 200N/10 mm. The adhesive strength is beneficial to ensuring the cohesiveness between the aramid cord and the coating rubber and ensuring the product quality.
In a preferred embodiment, the adhesive coating comprises: 100 parts of matrix rubber, 40-50 parts of reinforcing agent, 5-7.5 parts of vulcanization activator, 2-4.5 parts of anti-aging agent, 1-1.8 parts of accelerator, 3-5 parts of insoluble sulfur, 1-2.5 parts of adhesive resin, 3-4.5 parts of methylene donor and 0.1-0.4 part of anti-scorching agent. The technical scheme specifically defines a glue coating formula, and it is understood that the weight portion of the reinforcing agent can be any value within the ranges of 42, 44, 46 and 48, the weight portion of the vulcanization activator can be any value within the ranges of 5.5, 6, 6.5 and 7, the weight portion of the anti-aging agent can be any value within the ranges of 2.5, 3, 3.5 and 4, the weight portion of the accelerator can be any value within the ranges of 1.2, 1.4 and 1.6, the weight portion of the insoluble sulfur can be any value within the ranges of 3.5, 4 and 4.5, the weight portion of the binding resin can be any value within the ranges of 1.5 and 2, the weight portion of the methylene donor can be any value within the ranges of 3.5 and 4, and the weight portion of the anti-scorching agent can be any value within the ranges of 0.2 and 0.3.
In a preferred embodiment, the base rubber is standard smoked sheet rubber, the initial plasticity value of the standard smoked sheet rubber is more than or equal to 40.0, the plasticity retention index is more than or equal to 60.0, and the Mooney viscosity M L1+4 100℃83 +/-10. The technical scheme provides a preferable scheme of the matrix rubber, the content of the standard tobacco flake rubber in the matrix rubber is preferably 100 parts based on 100 parts of the matrix rubber, wherein the standard tobacco flake rubber is preferably Thailand standard No. 1 tobacco flake rubber, and the reason is that the reinforced corrugation is ensuredThe adhesive strength between the rubber material in the protective layer and the aramid cord thread improves the puncture resistance and improves the stress distribution.
In a preferred embodiment, the binder resin is 1.7 to 2.5 parts by weight, and the methylene donor is 3 to 4.5 parts by weight.
In a preferred embodiment, the reinforcing agent is selected from carbon black, the vulcanization activator is selected from zinc oxide produced by an indirect method using zinc ingot as a raw material, the anti-aging agent is selected from a mixture of p-phenylenediamine anti-aging agents and quinoline anti-aging agents, the accelerator is selected from N-tertiary butyl-2-benzothiazole sulfonamide, the adhesive resin is selected from resorcinol formaldehyde resin, the methylene donor is selected from RA65, and the scorch retarder is selected from N-cyclohexyl thiophthalimide. In order to maintain the strength and elongation performance of the rubber compound, carbon black is used as a reinforcing agent, and the adhesive resin preferably adopts resorcinol formaldehyde resin and methylene donor RA65(HMMM content is 65% and white carbon black content is 35%) which form an m-methyl adhesive system to improve the adhesive force between the rubber and the cord. The scorch retarder is preferably CTP (N-cyclohexyl thiophthalimide), which is beneficial to improving the processing safety of the coating.
In order to more clearly and specifically describe the method for preparing a corrugated protective layer for a radial aircraft tire provided by the embodiment of the invention, the following description is provided with reference to specific embodiments.
Example 1
The corrugated protective layer provided by the embodiment is made of aramid cords which are coated with glue from top to bottom, wherein the aramid cords are para-aramid fibers;
mixing 100g of rubber, 15g of isocyanate and resorcinol-formaldehyde resin to obtain a dipping solution, and dipping the para-aramid fiber; and (3) obtaining impregnated para-aramid fibers, arranging 110 para-aramid fibers side by side, keeping the distance between every two adjacent para-aramid fibers at 3mm, coating glue on the para-aramid fibers from top to bottom, and performing calendaring treatment to obtain the corrugated protective layer with the thickness of 3 mm.
Example 2
The preparation method of the corrugated protective layer is the same as that of example 1, except that 100g of modified rubber, 15g of isocyanate and resorcinol-formaldehyde resin are mixed to obtain an impregnation solution;
108 para-aramid fibers are arranged side by side, the distance between every two adjacent para-aramid fibers is kept to be 2.65mm, the para-aramid fibers are coated with glue from top to bottom and are subjected to calendaring treatment, and the corrugated protective layer with the thickness of 2.3mm is obtained.
Example 3
The preparation method of the corrugated protective layer is the same as that of example 1, except that 100g of modified rubber, 1g of isocyanate and resorcinol-formaldehyde resin are mixed to obtain an impregnation solution;
and (3) arranging 120 para-aramid fibers side by side, keeping the distance between every two adjacent para-aramid fibers at 3.6mm, coating glue on the para-aramid fibers from top to bottom, and performing calendaring treatment to obtain the corrugated protective layer with the thickness of 3.5 mm.
Example 4
The corrugated protective layer was prepared in the same manner as in example 1, except that 100g of the modified rubber was mixed with 30g of isocyanate and resorcinol-formaldehyde resin to obtain an impregnation solution.
Example 5
The preparation method of the corrugated protection layer is the same as that of the embodiment 1, and the difference is that the breaking elongation of the aramid cord is further limited to be 5%, the 100N constant load elongation is 0.7%, the constant length weight is 11000g/10000m, the breaking strength variation coefficient is less than or equal to 5.0%, the breaking strength is greater than or equal to 1500N, the breaking elongation variation coefficient is less than or equal to 6.5%, the 1% constant extension load is greater than or equal to 150N, the dry heat shrinkage rate is less than or equal to 0.5%, and the adhesive strength between the aramid cord and the coating rubber is greater than or equal to 200N/10 mm.
Example 6
The preparation method of the corrugated protective layer is the same as that in example 1, except that the adhesive coating formula is further defined as follows: 100 parts of standard smoked sheet rubber, 45 parts of carbon black, 6 parts of zinc oxide produced by an indirect method by taking zinc ingots as a raw material, 3 parts of a mixture of p-phenylenediamine antioxidants and quinoline antioxidants, 1.5 parts of N-tert-butyl-2-benzothiazole sulfonamide, 2 parts of resorcinol formaldehyde resin, 4 parts of RA65 and 0.2 part of N-cyclohexyl thiophthalimide.
Example 7
The preparation method of the corrugated protection layer is the same as that of the embodiment 1, and is different in that the breaking elongation of the aramid cord is further limited to be 5%, the 100N constant load elongation is 0.7%, the constant length weight is 11000g/10000m, the breaking strength variation coefficient is less than or equal to 5.0%, the breaking strength is more than or equal to 1500N, the breaking elongation variation coefficient is less than or equal to 6.5%, the 1% constant extension load is more than or equal to 150N, the dry heat shrinkage rate is less than or equal to 0.5%, and the adhesive strength of the aramid cord and the coating adhesive is more than or equal to 200N/10 mm; the coating formula is limited as follows: 100 parts of standard smoked sheet rubber, 45 parts of carbon black, 6 parts of zinc oxide produced by an indirect method by taking zinc ingots as a raw material, 3 parts of a mixture of p-phenylenediamine antioxidants and quinoline antioxidants, 1.5 parts of N-tert-butyl-2-benzothiazole sulfonamide, 2 parts of resorcinol formaldehyde resin, 4 parts of RA65 and 0.2 part of N-cyclohexyl thiophthalimide.
Performance testing
Performance testing of the corrugated protective layers of examples 1-7
1. Adhesive property of aramid cord and rubber compound
According to the aircraft tire trial-manufactured in the embodiment, the adhesive force between the aramid cord and the rubber is improved from 140-150N/piece to 240-250N/piece, and the puncture resistance and the overall strength of the corrugated protective layer are improved.
2. Hydraulic bursting test
The aircraft tire trial-manufactured according to the embodiment has the actually measured burst pressure 4650kPa which is nearly 5 times of the standard internal pressure 950kPa of the aircraft tire, and meets the performance requirement that the burst pressure is more than 4 times of the standard internal pressure.
3. Pressure blanket test Performance
The aviation tire trial-manufactured according to the embodiment has the advantages that the tire pressure detection trace is more uniform and the pressure average value is more stable through the finished tire pressure trace and static load performance tests.
Claims (8)
1. A preparation method of a corrugated protective layer of a radial aircraft tire is characterized by comprising the following steps:
108 aramid cords are arranged side by side, the aramid cords are coated with glue from top to bottom, and the corrugated protective layer with the thickness of 2.3-3.5mm is obtained through calendering;
the aramid cord is para-aramid fiber, and is subjected to dipping liquid treatment, wherein the dipping liquid comprises rubber and activating liquid, and the mass ratio of the rubber to the activating liquid is 100: 1-30; the activating liquid comprises at least one of isocyanate, resorcinol formaldehyde resin, bismaleimide triazine and epoxy resin.
2. The preparation method of the corrugated protection layer according to claim 1, wherein the aramid cord is formed by primary twisting and secondary twisting, and is formed in one step by using the S-direction twisting in the same direction to obtain the aramid cord with the diameter of 1.25-1.35 mm.
3. The preparation method of the corrugated protection layer according to claim 2, wherein the aramid cord has an elongation at break of 3.5 to 6.5%, an elongation at 100N at constant load of 0.3 to 0.9%, a weight at constant length of 10930g to 11270g/10000m, a coefficient of variation in breaking strength of 5.0% or less, a breaking strength of 1500N or more, a coefficient of variation in elongation at break of 6.5% or less, a load at 1% at constant elongation of 150N or more, and a dry heat shrinkage of 0.5% or less.
4. The method for preparing the corrugated protection layer according to claim 1, wherein the adhesive strength between the aramid cord and the coating rubber is not less than 200N/10 mm.
5. The method for preparing the corrugated protective layer according to claim 1, wherein the coating comprises: 100 parts of matrix rubber, 40-50 parts of reinforcing agent, 5-7.5 parts of vulcanization activator, 2-4.5 parts of anti-aging agent, 1-1.8 parts of accelerator, 3-5 parts of insoluble sulfur, 1-2.5 parts of adhesive resin, 3-4.5 parts of methylene donor and 0.1-0.4 part of anti-scorching agent.
6. The method for preparing the corrugated protective layer according to claim 5, wherein the base rubber is a standard smoked sheet rubber, the initial plasticity value of the standard smoked sheet rubber is not less than 40.0, the plasticity retention index is not less than 60.0, and the Mooney viscosity M L1+4 100℃83±10。
7. The method for producing a corrugated protective layer according to claim 5, wherein the binder resin is 1.7 to 2.5 parts by weight, and the methylene donor is 3 to 4.5 parts by weight.
8. The method for producing a corrugated protective layer according to claim 7, wherein the reinforcing agent is selected from carbon black, the vulcanization activator is selected from zinc oxide produced by an indirect method using zinc ingot as a raw material, the antioxidant is selected from a mixture of p-phenylenediamine-based antioxidants and quinoline-based antioxidants, the accelerator is selected from N-tert-butyl-2-benzothiazolesulfenamide, the binder resin is selected from resorcinol-formaldehyde resin, the methylene donor is selected from RA65, and the scorch retarder is selected from N-cyclohexylthiophthalimide.
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| CN202010559838.XA CN111499936B (en) | 2020-06-18 | 2020-06-18 | Preparation method of corrugated protective layer of radial aircraft tire |
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| CN202010559838.XA CN111499936B (en) | 2020-06-18 | 2020-06-18 | Preparation method of corrugated protective layer of radial aircraft tire |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956450A (en) * | 2017-04-21 | 2017-07-18 | 中国化工集团曙光橡胶工业研究设计院有限公司 | The kiss-coating sizing material of radial aviation tire belt cord is made of aramid line |
| CN109071891A (en) * | 2016-05-12 | 2018-12-21 | 株式会社普利司通 | For the tire adhesive mixing material of enhancing casing ply |
| CN109153237A (en) * | 2016-05-10 | 2019-01-04 | 株式会社普利司通 | The belt with metal casing ply for tire |
| CN110329008A (en) * | 2019-06-26 | 2019-10-15 | 青岛双星轮胎工业有限公司 | A kind of cord of full-steel radial ply tyres for passenger cars carcass |
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2020
- 2020-06-18 CN CN202010559838.XA patent/CN111499936B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109153237A (en) * | 2016-05-10 | 2019-01-04 | 株式会社普利司通 | The belt with metal casing ply for tire |
| CN109071891A (en) * | 2016-05-12 | 2018-12-21 | 株式会社普利司通 | For the tire adhesive mixing material of enhancing casing ply |
| CN106956450A (en) * | 2017-04-21 | 2017-07-18 | 中国化工集团曙光橡胶工业研究设计院有限公司 | The kiss-coating sizing material of radial aviation tire belt cord is made of aramid line |
| CN110329008A (en) * | 2019-06-26 | 2019-10-15 | 青岛双星轮胎工业有限公司 | A kind of cord of full-steel radial ply tyres for passenger cars carcass |
Non-Patent Citations (1)
| Title |
|---|
| W.C.韦克: "《橡胶的织物增强》", 31 January 1988, 化学工业出版社 * |
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