CN210082833U

CN210082833U - Cord fabric of all-steel structure radial passenger vehicle tire body

Info

Publication number: CN210082833U
Application number: CN201920982371.2U
Authority: CN
Inventors: 王鹭飞; 王君; 董康; 刘文国; 韩丹; 陈亚婷; 徐伟; 刘杰
Original assignee: Qingdao Doublestar Tire Industry Co Ltd
Current assignee: Qingdao Doublestar Tire Industry Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-02-18
Anticipated expiration: 2029-06-26

Abstract

The utility model belongs to the technical field of automobile tire, especially, relate to a curtain cloth of all steel construction meridian passenger car tire matrix. The technical problems that the existing passenger car tire on the market is poor in controllability, strong in load resistance and large in rolling resistance, and the requirement of a steel wire tire car tire is met by a tire body cord fabric with high fatigue resistance and high strength are solved. The cord fabric is made of a cord fabric rubber-coated composition and a steel cord; the cord fabric rubber-coating composition comprises matrix rubber, a reinforcing agent, a vulcanization activator, an anti-aging agent, an accelerator, insoluble sulfur, adhesive resin, a methylene donor, cobalt salt and an anti-scorching agent; the steel cord is formed by weaving and twisting 8 outmost outer steel wires and 3 twisting inner steel wires. The utility model discloses the tire safe strength that the curtain cloth of the all steel construction meridian passenger car tire matrix made is showing and is promoting, and the cost of manufacture is low, and tire rolling resistance reduces, and hundred kilometers oil consumption reduce 2% -4%, do benefit to the low carbon environmental protection, and the travelling comfort promotes, and braking distance and noise level obtain improving.

Description

Cord fabric of all-steel structure radial passenger vehicle tire body

Technical Field

The utility model belongs to the technical field of automobile tire, especially, relate to a curtain cloth of all steel construction meridian passenger car tire matrix.

Background

The automobile industry is rapidly developed in the world, and automobile tires are important components of vehicles, and the quality and performance of the automobile tires directly affect the performance of the vehicles. The radial tire body ply is a carcass layer consisting of rubber-coated cord fabric and is a stressed framework layer of the tire. The radial ply tire is divided according to the carcass framework material, the carcass is a steel wire called an all-steel tire and is generally used for commercial heavy-duty tires; the carcass is a fibrous semi-steel tire, which is generally used for passenger tires.

The existing passenger tire in the market has poor controllability, strong load resistance and large rolling resistance, and an all-steel tire body cord fabric with higher fatigue resistance and strength is urgently needed to meet the requirements of all-steel radial passenger vehicle tires.

Disclosure of Invention

The utility model provides a curtain cloth of full steel construction meridian passenger car tire matrix has solved that the passenger car tire nature controlled on the existing market is poor, resistant to carry the nature strong, and rolling resistance is big, urgently needs the technological problem that the matrix curtain cloth that has higher fatigue resistance and intensity satisfies the demand of steel wire matrix sedan-chair tire.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a cord fabric of a radial ply passenger vehicle tire body with an all-steel structure is manufactured by a cord fabric rubber-coated composition and a steel cord;

the cord fabric coating rubber composition comprises the following components in parts by weight: 100 parts of matrix rubber, 45-60 parts of reinforcing agent, 8-10 parts of vulcanization activator, 1-3 parts of anti-aging agent, 1-1.5 parts of accelerator, 4-6 parts of insoluble sulfur, 1-2 parts of adhesive resin, 4-6 parts of methylene donor, 0.4-1.2 parts of cobalt salt and 0.1-0.4 part of anti-scorching agent;

the steel cord is formed by weaving and twisting 8 outmost outer steel wires and 3 twisting inner steel wires.

Furthermore, all the steel wires have the same diameter of 0.695-0.765 mm;

the lay length of the outer layer steel wire of the steel cord is 12.5 mm; the lay length of the inner layer steel wire of the steel cord is 6.3 mm.

Further, the outer layer steel wire and the inner layer steel wire of the steel cord are woven and twisted in the same direction S, and are formed in one step.

Further, the breaking force of the steel cord is more than or equal to 880N; the adhesive force between the steel cord and the rubber coating composition is more than or equal to 700N;

the copper plating weight of the steel cord is 3.0-7.0g/kg, and the copper content of the plating layer is 61.0-66.0%; the linear density of the steel cord is 1.95-2.26 g/m.

Further, said steel cord is suitable for use with NT, HT, ST, UT or MT grade steel filaments.

Further, the thickness of the tire body cord fabric calendering and rubber coating composition is 1.2mm-2.6mm, and the thickness tolerance of the rubber coating composition is +/-0.05 mm; the calendering density of the carcass ply is 48-108 pieces/dm.

Further, the matrix rubber comprises 70-100 parts of natural rubber and 0-30 parts of styrene butadiene rubber; the natural rubber is SMR10/20 or STR 10/20; the styrene butadiene rubber is SBR1502 produced by a low-temperature emulsion polymerization process.

Further, the styrene butadiene rubber is used in an amount of 10 to 30 parts by weight;

the reinforcing agent is 48-54 parts by weight, the reinforcing agent is oil furnace process N326 carbon black, the nitrogen adsorption surface area of the oil furnace process N326 carbon black is 72-84 square meters per gram, and the absorption value of dibutyl terephthalate after compression is 62-74 ml/g.

Furthermore, the vulcanization activating agent is zinc oxide produced by taking zinc ingots as a raw material through an indirect method, and the specific surface area is 4-8 square meters per gram;

the anti-aging agent is used in an amount of 2-3 parts by weight, and is p-phenylenediamine anti-aging agent 6 PPD;

the accelerator is sulfonamide accelerator DZ;

the insoluble sulfur is HD OT-20.

Further, the dosage of the adhesive resin is 1.2-1.8 parts, and the adhesive resin is resorcinol formaldehyde resin;

the methylene donor is hexamethylol melamine hexa methyl ether, the HMMM content of the hexamethylol melamine hexa methyl ether is 65%, and the white carbon black content is 35%;

the cobalt salt is cobalt decanoate with the effective content of 20-21%;

the scorch retarder is N-cyclohexyl thiophthalimide.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the tire safe intensity that the curtain cloth of the all steel construction meridian passenger car tire matrix made is showing and is promoting, can further reduce the risk that the tire damaged after bumping in the driving, and anti striking performance has obvious enhancement.

2. Compare the tire that other fiber material made, the utility model discloses the cost of manufacture of the tire that the curtain cloth of the all steel construction meridian passenger car tire matrix made is low, and tire rolling resistance reduces, and hundred kilometers oil consumption reduce 2% -4%, do benefit to the low carbon environmental protection.

3. The utility model discloses the tire that the tire fabric of the all steel construction meridian passenger car tire matrix made is travelling comfort, control the performance promotion of in-process, and braking distance and noise water average are improved.

Drawings

Fig. 1 is a schematic structural diagram of a steel cord provided in an embodiment of the present invention;

1-inner layer steel wire and 2-outer layer steel wire.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "inner", etc. indicate orientations or positional relationships based on those shown in fig. 1-5, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a cord fabric of a radial passenger vehicle tire body with an all-steel structure, which is made of a cord fabric rubber-coated composition and a steel cord;

the rubber-coated cord fabric is produced by simultaneously calendering or extruding the rubber-coated composition and the steel cord, generally by calendering. The steel cord density is required to be arranged neatly and uniformly, the coating adhesive is well adhered to the steel cord, the coating adhesive is fully extruded in the gaps, part of the coating adhesive penetrates into the structure of the steel cord, the thickness of the adhesive sheets on the upper surface and the lower surface of the curtain cloth is uniform, and the surface of the coated curtain cloth is flat.

In an optional embodiment, the base rubber comprises 70-100 parts of natural rubber and 0-30 parts of styrene butadiene rubber; the natural rubber is SMR10/20 or STR 10/20; the styrene butadiene rubber is SBR1502 produced by a low-temperature emulsion polymerization process. The embodiment of the utility model provides an in adopt weight ratio, count with 100 parts base rubber, natural rubber's content is preferred more than 70 parts in the base rubber. When the content of the natural rubber is less than 70 parts, the tensile strength of the rubber coating is reduced, and the vulcanization speed is reduced.

The SBR1502 produced by the low-temperature emulsion polymerization process is preferably selected according to the content of the styrene-butadiene rubber in the embodiment of the utility model, the styrene content is 23.5 percent, the butadiene content is 76.5 percent, and the Mooney viscosity is 52 +/-5.

In an optional embodiment, the styrene butadiene rubber is used in an amount of 10 to 30 parts by weight; the content of the butadiene styrene rubber is preferably more than 10 parts, so that the rubber material has better reversion resistance, high temperature resistance and higher impact resistance and energy absorption.

In an optional embodiment, the reinforcing agent is used in an amount of 48 to 54 parts by weight, the reinforcing agent is oil furnace process N326 carbon black, the nitrogen adsorption surface area of the oil furnace process N326 carbon black is 72 to 84 square meters per gram, and the dibutyl terephthalate absorption value after compression is 62 to 74 ml/g. The embodiment of the utility model provides an in adopt N326 carbon black, can promote rubber mechanical strength and ensure to roll dimensional stability, the optimum quantity is 48-54, and the carbon black quantity crosses lowly can cause rubber mechanical strength to descend, and the quantity can cause the high flexibility of resistant of rubber themogenesis and influence rubber too high too much. The embodiment of the utility model provides a preferred oil furnace method technology N326 carbon black that uses, its nitrogen gas adsorption surface area is 72-84 square meters per gram, the dibutyl terephthalate absorbed value after the compression is 62-74ml/g, this carbon black structure degree is low, the sizing material mobility of producing is good, the sizing material easily permeates the steel wire gap among the calendering process, promotes the steel wire adhesive force, and has higher tensile strength and elongation, ensures that the tire that uses this rubber coating preparation has higher resistance to loading and shock resistance.

In an optional embodiment, the vulcanization active agent is zinc oxide produced by an indirect method by taking a zinc ingot as a raw material, and the specific surface area is 4-8 square meters per gram; the embodiment of the utility model provides an in high zinc oxide content, can not cause the steel wire "lose zinc", do not influence the adhesive force of rubber and steel cord.

The anti-aging agent is used in an amount of 2-3 parts by weight, and is p-phenylenediamine anti-aging agent 6 PPD; the embodiment of the utility model provides an in the preferred 2-3 parts p-phenylenediamine anti-aging agent 6PPD (N- (1, 3-dimethyl) butyl-N' -phenyl p-phenylenediamine) of anti-aging agent, it has anti thermal oxidation, anti ozone, and fatigue resistance can be balanced, and the quantity promotes, and anti ozone, fatigue resistance promote, and the quantity reduces, and anti thermal oxidation aging performance promotes.

The accelerator is sulfonamide accelerator DZ; the embodiment of the utility model provides an it is preferred 1-1.5 parts delayed-type sulfenamide promoter DZ (N, N-2 dicyclohexyl-2, 2-dibenzothiazole sulfenamide), this anti-aging agent has better processing security, and scorching time is long, makes the sizing material have better mobility in the course of working, and the permeability of rubber to the steel wire is good, and the adhesive force is high.

The embodiment of the utility model provides an insoluble sulfur is HD OT-20. This model insolubility vulcanization heat is stable high, difficult blowout, can effectively guarantee to cover gluey in the course of working viscidity, the sulphur quantity is crossed lowly, can make to cover gluey and the inferior copper sulphide volume that the steel wire surface formed not enough, influence the steel wire adhesive force, the sulphur quantity is too high, can cause to cover gluey vulcanization back cross-linking density too high, and form more polysulfide bond, cross-linking density too high can influence the flexibility of covering gluey, polysulfide bond produces more serious vulcanization reversion easily in the tire vulcanization process, influence tire performance.

In an alternative embodiment, the adhesive resin is used in an amount of 1.2 to 1.8 parts, and the adhesive resin is resorcinol formaldehyde resin; the methylene donor is hexamethylol melamine hexa methyl ether, the HMMM content of the hexamethylol melamine hexa methyl ether is 65%, and the white carbon black content is 35%; the embodiment of the utility model provides an in resorcinol formaldehyde resin cooperation methylene gives the body 2.5-5 parts RA65(HMMM content 65%, white carbon black content 35%), and the two forms between-first bonding system, promotes the adhesive force of rubber and steel wire, and the too high creep resistance that can influence the sizing material of quantity, the quantity crosses lowly can lead to rubber and steel wire adhesive force to descend.

In the embodiment of the utility model, the cobalt salt is cobalt decanoate with the effective content of 20-21%; the cobalt salt is preferably 0.4-1.2 parts of cobalt decanoate with the effective content of 20-21%, the cobalt decanoate can promote the growth of cuprous sulfide, the dosage is too low, the adhesive force of the rubber coating and the steel wire is reduced, and the dosage is too high, so that the aging of the rubber coating on the steel wire is accelerated, and the service life of the tire is influenced.

The scorch retarder is N-cyclohexyl thiophthalimide. The embodiment of the utility model provides an in the scorch retarder be 0.1-0.4 CTP (N-cyclohexyl thiophthalimide), the quantity is too high, can delay sizing material vulcanization speed, reduces sizing material physical and mechanical properties, the quantity is low excessively, can influence the processing security of rubber coating.

In an alternative embodiment, all the wires have the same diameter, ranging from 0.695 to 0.765 mm;

In an alternative embodiment, the outer layer steel wires and the inner layer steel wires of the steel cord are woven and twisted in the same direction S and are formed in one step.

In an optional embodiment, the breaking force of the steel cord is more than or equal to 880N; the adhesive force between the steel cord and the rubber coating composition is more than or equal to 700N;

In an alternative embodiment, the steel cord is suitable for use with NT, HT, ST, UT or MT grade steel wire.

In an optional embodiment, the thickness of the carcass ply rolling and rubber coating composition is 1.2mm-2.6mm, and the thickness tolerance of the rubber coating composition is +/-0.05 mm; the calendering density of the carcass ply is 48-108 pieces/dm.

The utility model discloses used steel cord of curtain cloth of all steel construction meridian passenger car tire matrix is that the fatigue resistance can be excellent and can improve the matrix cord of glue permeability, adopts less monofilament and cord thread diameter, can guarantee to make curtain cloth calendering thickness thinner under the prerequisite of the same glue thickness that attaches, and the sizing material quantity is more economized, satisfies tire lightweight requirement to can reduce rolling resistance, and less monofilament and cord thread diameter can obtain higher tire fatigue performance; the steel wire model is 3+8 × 0.175 ST.

In order to more clearly and specifically describe the cord fabric of the all-steel radial passenger vehicle tire carcass provided by the embodiments of the present invention, the following description will be made with reference to specific embodiments.

Example 1

The cord fabric of the tire body of the all-steel radial passenger vehicle tire provided by the embodiment is made of a cord fabric rubber coating composition and a steel cord;

the cord fabric coating rubber composition comprises the following components in parts by weight: 100 parts of matrix rubber, 45 parts of reinforcing agent, 8 parts of vulcanization activator, 1 part of anti-aging agent, 1 part of accelerator, 4 parts of insoluble sulfur, 1 part of adhesive resin, 4 parts of methylene donor, 0.4 part of cobalt salt and 0.1 part of anti-scorching agent;

The base rubber comprises 70 parts of natural rubber and 30 parts of styrene butadiene rubber; the natural rubber is SMR 10/20; the styrene butadiene rubber is SBR1502 produced by a low-temperature emulsion polymerization process.

The reinforcing agent is oil furnace process N326 carbon black, the nitrogen adsorption surface area of the oil furnace process N326 carbon black is 72-84 square meters per gram, and the absorption value of the compressed dibutyl terephthalate is 62-74 ml/g.

The vulcanization activating agent is zinc oxide produced by an indirect method by taking zinc ingots as raw materials, and the specific surface area is 4-8 square meters per gram;

the antioxidant is p-phenylenediamine antioxidant 6 PPD;

the accelerator is sulfonamide accelerator DZ;

the insoluble sulfur is HD OT-20.

The adhesive resin is resorcinol formaldehyde resin;

the cobalt salt is cobalt decanoate with the effective content of 20-21%;

the scorch retarder is N-cyclohexyl thiophthalimide.

All the steel wires have the same diameter of 0.695-0.765 mm;

The outer layer steel wire and the inner layer steel wire of the steel cord are woven and twisted in the same direction S, and are formed in one step.

The breaking force of the steel cord is more than or equal to 880N; the adhesive force between the steel cord and the rubber coating composition is more than or equal to 700N;

The steel cord is suitable for NT, HT, ST, UT or MT grade steel wires.

The thickness of the tire body cord fabric calendering and rubber coating composition is 1.2mm-2.6mm, and the thickness tolerance of the rubber coating composition is +/-0.05 mm; the calendering density of the carcass ply is 48-108 pieces/dm.

Claims

1. The utility model provides a curtain cloth of all steel construction meridian passenger car tire casing which characterized in that: the cord fabric is made of a cord fabric rubber-coated composition and a steel cord;

2. A cord for an all-steel radial passenger tire carcass according to claim 1, characterized in that: all the steel wires have the same diameter of 0.695-0.765 mm;

3. A cord for an all-steel radial passenger tire carcass according to claim 1, characterized in that: the outer layer steel wire and the inner layer steel wire of the steel cord are woven and twisted in the same direction S, and are formed in one step.

4. A cord for an all-steel radial passenger tire carcass according to claim 1, characterized in that: the breaking force of the steel cord is more than or equal to 880N; the adhesive force between the steel cord and the rubber coating composition is more than or equal to 700N;

5. A cord for an all-steel radial passenger tire carcass according to claim 1, characterized in that: the steel cord is suitable for NT, HT, ST, UT or MT grade steel wires.

6. A cord for an all-steel radial passenger tire carcass according to claim 1, characterized in that: the thickness of the tire body cord fabric calendering and rubber coating composition is 1.2mm-2.6mm, and the thickness tolerance of the rubber coating composition is +/-0.05 mm; the calendering density of the carcass ply is 48-108 pieces/dm.