阅读说明：本技术 一种柔韧性强的实心轮胎及制备方法 (Solid tire with strong flexibility and preparation method thereof ) 是由 朱秀祥 吴喜林 王化勇 于 2020-12-03 设计创作，主要内容包括：本发明公开了一种柔韧性强的实心轮胎及制备方法,其技术方案是：包括主料和辅料,所述主料包括天然橡胶,所述辅料包括促进剂、抗氧剂、氧化锌、硫磺、发泡剂、偶联剂、光亮剂、抗疲劳剂、硬脂酸、古马隆树脂、炭黑和耐磨剂,一种柔韧性强的实心轮胎及制备方法有益效果是：加入适宜比例的促进剂ZS、促进剂CZ和促进剂DM,使得轮胎具有很好的弹性和韧性,并且环保,在天然橡胶中加适宜比例的氧化锌,使得轮胎的热传导性能大大提升,在使用轮胎过程中降低了爆胎的几率；加入了适宜比例的硫磺,改善硫化性能；加入了适宜比例的抗疲劳剂和抗撕裂树脂,使得轮胎的抗老化性好,滚动阻力低,实心轮胎性能稳定性。(The invention discloses a solid tire with strong flexibility and a preparation method thereof, and the technical scheme is as follows: the solid tire with strong flexibility and the preparation method have the beneficial effects that the solid tire with strong flexibility comprises a main material and auxiliary materials, wherein the main material comprises natural rubber, and the auxiliary materials comprise an accelerant, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent: the accelerator ZS, the accelerator CZ and the accelerator DM are added in proper proportion, so that the tire has good elasticity and toughness and is environment-friendly, the zinc oxide is added in proper proportion in the natural rubber, the heat conduction performance of the tire is greatly improved, and the probability of tire burst is reduced in the process of using the tire; the proper proportion of sulfur is added to improve the vulcanization performance; the anti-fatigue agent and the anti-tear resin are added in a proper proportion, so that the tire has good aging resistance, low rolling resistance and stable performance of the solid tire.)

1. The solid tire with strong flexibility comprises main materials and auxiliary materials, and is characterized by being prepared from the following raw materials in parts by weight: the main materials (by weight portion) comprise natural rubber: 70-130 parts of butadiene rubber: 30-60 parts of an auxiliary material, wherein the auxiliary material comprises the following components in parts by weight: 0.4-0.7 parts of antioxidant: 0.2-0.5 parts of zinc oxide: 3-6 parts of sulfur: 0.7-1 part of foaming agent: 6-12 parts of coupling agent: 0.8-1.4 parts of brightener: 8-17 parts of an anti-fatigue agent: 3-12 parts of stearic acid: 3-7 parts of coumarone resin: 0.6-2.2 parts of carbon black: 4.5-7.5 parts of an anti-wear agent: 6.5 to 12.5 portions.

2. The solid tire with strong flexibility as claimed in claim 1, wherein the solid tire is prepared from the following raw materials in parts by weight:

natural rubber: 70 parts of butadiene rubber: 30 parts of accelerator: 0.4 part of antioxidant: 0.2 part of zinc oxide: 3-6 parts of sulfur: 0.7-1 part of foaming agent: 6-12 parts of coupling agent: 0.8 part of brightener: 8 parts of an anti-fatigue agent: 3 parts of stearic acid: 3 parts of coumarone resin: 0.6 part of carbon black: 4.5 parts of an anti-wear agent: 6.5 parts.

3. The solid tire with strong flexibility as claimed in claim 1, wherein the solid tire is prepared from the following raw materials in parts by weight:

natural rubber: 90 parts of butadiene rubber: 40 parts of accelerator: 0.5 part of antioxidant: 0.3 part of zinc oxide: 4 parts of sulfur: 0.8 part of foaming agent: 8 parts of coupling agent: 1 part of brightener: 11 parts of an anti-fatigue agent: 6 parts of stearic acid: 4 parts of coumarone resin: 1.2 parts of carbon black: 5.5 parts of an anti-wear agent: 8.5 parts.

4. The solid tire with strong flexibility as claimed in claim 1, wherein the solid tire is prepared from the following raw materials in parts by weight:

natural rubber: 110 parts of butadiene rubber: 50 parts of accelerator: 0.6 part of antioxidant: 0.4 part of zinc oxide: 5 parts of sulfur: 0.9 part of foaming agent: 10 parts of coupling agent: 1.2 parts of brightener: 14 parts of an anti-fatigue agent: 10 parts of stearic acid: 6 parts of coumarone resin: 1.8 parts of: 1.1 parts of carbon black: 6.5 parts of an anti-wear agent: 10.5 parts.

5. The solid tire with strong flexibility as claimed in claim 1, wherein the solid tire is prepared from the following raw materials in parts by weight:

natural rubber: 130 parts of butadiene rubber: 60 parts of accelerator: 0.7 part of antioxidant: 0.5 part of zinc oxide: 6 parts of sulfur: 1 part of foaming agent: 12 parts of coupling agent: 1.4 parts of brightener: 17 parts of an anti-fatigue agent: 12 parts and stearic acid: 3-7 parts of coumarone resin: 2.2 parts of carbon black: 7.5 parts of an anti-wear agent: 12.5 parts.

6. A solid tire having high flexibility according to claim 1, wherein: the coupling agent is set as SI-69 coupling agent, the anti-fatigue agent is set as anti-fatigue agent pl-600, and the antioxidant is set as 502 antioxidant.

7. A preparation method of a solid tire with strong flexibility is characterized by comprising the following steps: the method comprises the following steps:

s1, purchasing the main materials and auxiliary materials required in the formula, inspecting various purchased raw materials and auxiliary materials, and reserving the materials for later use after the inspection result meets the standard;

s2, placing natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent into an internal mixer according to the material ratio;

s3, cooling the mixture after the rubber mixing in the step S2, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection; cutting the mixture in the S4 into a required shape according to construction standards by using the big curtain cloth roll in the previous process to manufacture a semi-finished tire;

s4, assembling the semi-finished tire of S3 on a forming machine according to construction standards to form a qualified tire blank;

and S5, putting the blank in the S4 into a mould for co-crosslinking, and finishing the vulcanization process.

8. A solid tire having high flexibility according to claim 1, wherein: the accelerant is an accelerant ZS, an accelerant CZ and an accelerant DM in a weight ratio of 3: 1: 2, or a mixture thereof.

Technical Field

The invention relates to the technical field of solid tires, in particular to a solid tire with strong flexibility and a preparation method thereof.

Background

The solid tyre is a special automobile tyre, does not use cord as a framework and does not need to be inflated, so an inner tube or an air-tight layer is not needed, the solid tyre is only used for high-load vehicles or machines running at low speed or fixed-position machines, and is mainly suitable for special vehicles such as antiriot vehicles, cash trucks, anti-terrorist vehicles, engineering vehicles, forestry machines and the like, the radial tyre has high tread rigidity and small circumferential deformation, and harder rubber can be used as a tread material, so the wear resistance is good, the ground contact area of the tyre is larger, the unit ground contact pressure is small, the load distribution is uniform, the slippage on the road surface is small, the running mileage of the tyre is about 50 percent longer than that of an oblique tyre, and the fuel is saved. Because the number of layers of radial ply tire cord fabric is less and the interlayer friction is small, the rolling resistance is 25% -30% less than that of the bias ply tire, the dynamic property of the automobile can be improved, the fuel economy can be improved, the fuel saving rate can reach 6% -8% in actual use, the fuel saving effect is better along with the improvement of the automobile speed, the bearing capacity is large, the radial ply tire cord fabric is arranged in a radial direction, the cord fabric strength can be fully utilized, and the bearing capacity is improved by about 14% compared with the bias ply tire.

The traditional solid tire has the defects that the explosion-proof performance and the toughness are not strong enough, the tire is unsafe when running in high-temperature weather, nitrosodiphenylamine, nitrosomethylaniline and nitrosodibutylamine chemical substances are used as an anti-aging agent, the tire is not environment-friendly, the proportion of the materials of the traditional solid tire is unreasonable, the puncture-proof performance and the heat conductivity of the tire are poor, the proportion of zinc oxide and stearic acid is unreasonable, and the tire cannot have the hardening degree and the elasticity at the same time.

Therefore, it is necessary to invent a solid tire with strong flexibility and a preparation method thereof.

Disclosure of Invention

Therefore, the solid tire with strong flexibility and the preparation method thereof provided by the invention have the advantages that the accelerator is used for replacing the traditional anti-aging agent, the mixture of zinc oxide and stearic acid with a proper proportion is added, so that the tire has high hardening degree, the foaming agent with a reasonable proportion is added, the tire has excellent flexibility, and the defects of the existing solid tire are overcome.

In order to achieve the above purpose, the invention provides the following technical scheme: a solid tyre with high flexibility comprises a main material and auxiliary materials, wherein the main material comprises natural rubber, and the auxiliary materials comprise an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent.

Preferably, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 70 parts of butadiene rubber: 30 parts of accelerator: 0.4 part of antioxidant: 0.2 part of zinc oxide: 3-6 parts of sulfur: 0.7-1 part of foaming agent: 6-12 parts of coupling agent: 0.8 part of brightener: 8 parts of anti-fatigue agent, 3 parts of stearic acid: 3 parts of coumarone resin: 0.6 part of carbon black: 4.5 parts of an anti-wear agent: 6.5 parts.

Preferably, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 90 parts of butadiene rubber: 40 parts of accelerator: 0.5 part of antioxidant: 0.3 part of zinc oxide: 4 parts of sulfur: 0.8 part of foaming agent: 8 parts of coupling agent: 1 part of brightener: 11 parts of anti-fatigue agent, 6 parts of stearic acid: 4 parts of coumarone resin: 1.2 parts of carbon black: 5.5 parts of an anti-wear agent: 8.5 parts.

Preferably, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 110 parts of butadiene rubber: 50 parts of accelerator: 0.6 part of antioxidant: 0.4 part of zinc oxide: 5 parts of sulfur: 0.9 part of foaming agent: 10 parts of coupling agent: 1.2 parts of brightener: 14 parts of an anti-fatigue agent: 10 parts of stearic acid: 6 parts of coumarone resin: 1.8 parts of: 1.1 parts of carbon black: 6.5 parts of an anti-wear agent: 10.5 parts.

Preferably, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 130 parts of butadiene rubber: 60 parts of accelerator: 0.7 part of antioxidant: 0.5 part of zinc oxide: 6 parts of sulfur: 1 part of foaming agent: 12 parts of coupling agent: 1.4 parts of brightener: 17 parts of an anti-fatigue agent: 12 parts and stearic acid: 3-7 parts of coumarone resin: 2.2 parts of carbon black: 7.5 parts of an anti-wear agent: 12.5 parts.

Preferably, the coupling agent is set as an SI-69 coupling agent, the anti-fatigue agent is set as an anti-fatigue agent pl-600, and the antioxidant is set as an antioxidant 502.

Preferably, the preparation method comprises the following specific steps:

s1, buying the main materials and auxiliary materials needed in the formula, checking the purchased raw materials and auxiliary materials, and keeping the check result for later use after the check result meets the standard;

s2, placing natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent into an internal mixer according to the material ratio;

s3, cooling the mixture after the rubber mixing in the step S2, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection; cutting the mixture in the S4 into a required shape according to construction standards by using the big curtain cloth roll in the previous process to manufacture a semi-finished tire;

s4, assembling the semi-finished tire of S3 on a forming machine according to construction standards to form a qualified tire blank;

and S5, putting the blank in the S4 into a mould for co-crosslinking, and finishing the vulcanization process until the finished tire is produced.

Preferably, the promoter is a promoter ZS, a promoter CZ and a promoter DM in a weight ratio of 3: 1: 2, or a mixture thereof.

The invention has the beneficial effects that:

the accelerator ZS, the accelerator CZ and the accelerator DM are added in proper proportion, so that the tire has good elasticity and toughness and is environment-friendly, the zinc oxide is added in proper proportion in the natural rubber, the heat conduction performance of the tire is greatly improved, and the probability of tire burst is reduced in the process of using the tire; the proper proportion of sulfur is added to improve the vulcanization performance; the anti-fatigue agent and the anti-tear resin are added in a proper proportion, so that the tire has good aging resistance, low rolling resistance and stable performance;

according to different proportions of natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and a wear-resisting agent, tires with different performances can be obtained, so that the toughness of the tires is greatly enhanced in terms of heat conductivity, puncture resistance and wear resistance, different formulas can be selected according to specific use sites of the tires, and the tires are higher in practicability and strong in function expansibility.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.

Example 1:

the solid tire with strong flexibility comprises main materials and auxiliary materials, wherein the main materials comprise natural rubber and butadiene rubber, and the auxiliary materials comprise an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and a wear-resisting agent;

further, the feed additive is prepared from the following raw materials in parts by weight: natural rubber: 70 parts of butadiene rubber: 30 parts of accelerator: 0.4 part of antioxidant: 0.2 part of zinc oxide: 3-6 parts of sulfur: 0.7-1 part of foaming agent: 6-12 parts of coupling agent: 0.8 part of brightener: 8 parts of anti-fatigue agent, 3 parts of stearic acid: 3 parts of coumarone resin: 0.6 part of carbon black: 4.5 parts of an anti-wear agent: 6.5 parts;

further, the coupling agent is set as an SI-69 coupling agent, the anti-fatigue agent is set as an anti-fatigue agent pl-600, and the antioxidant is set as an antioxidant 502.

Further, the preparation method comprises the following specific steps:

s1, buying the main materials and auxiliary materials needed in the formula, checking the purchased raw materials and auxiliary materials, and keeping the check result for later use after the check result meets the standard;

s2, placing natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent into an internal mixer according to the material ratio;

s3, cooling the mixture after the rubber mixing in the step S2, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection; cutting the mixture in the S4 into a required shape according to construction standards by using the big curtain cloth roll in the previous process to manufacture a semi-finished tire;

s4, assembling the semi-finished tire of S3 on a forming machine according to construction standards to form a qualified tire blank;

and S5, putting the blank in the S4 into a mould for co-crosslinking, and finishing the vulcanization process.

Further, the promoter is a promoter ZS, a promoter CZ and a promoter DM in a weight ratio of 3: 1: 2, or a mixture thereof.

Example 2:

the solid tire with strong flexibility comprises main materials and auxiliary materials, wherein the main materials comprise natural rubber and butadiene rubber, and the auxiliary materials comprise an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and a wear-resisting agent;

further, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 90 parts of butadiene rubber: 40 parts of accelerator: 0.5 part of antioxidant: 0.3 part of zinc oxide: 4 parts of sulfur: 0.8 part of foaming agent: 8 parts of coupling agent: 1 part of brightener: 11 parts of anti-fatigue agent, 6 parts of stearic acid: 4 parts of coumarone resin: 1.2 parts of carbon black: 5.5 parts of an anti-wear agent: 8.5 parts;

further, the main material and the auxiliary material respectively comprise the following components in parts by mass: the coupling agent is set to be SI-69 coupling agent, the anti-fatigue agent is set to be anti-fatigue agent pl-600, the tear-resistant resin is set to be YG8020 tear-resistant resin, and the antioxidant is set to be 502 antioxidant.

Further, the processing method comprises the following specific steps:

s1, buying the main materials and auxiliary materials needed in the formula, checking the purchased raw materials and auxiliary materials, and putting into production only after the checking result meets the standard;

s2, placing the natural rubber into a crusher, and cutting the natural rubber into pieces, so that small particles of 3-6cm are cut off from the natural rubber;

s3, placing the small-particle natural rubber in the S2, zinc oxide, an accelerator, an antioxidant, sulfur, a foaming agent, a coupling agent, an anti-fatigue agent, stearic acid, tear-resistant resin, resorcinol resin, a coloring agent, carbon black, a wear-resistant agent part, zinc oxide, xylene and a brightening agent into an internal mixer to be mixed according to the material ratio;

s4, cooling the mixture after the rubber mixing in the step S3, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection;

s5, cutting the mixture in the S4 into a required shape by using the big cord roll in the previous process according to construction standards, and manufacturing a semi-finished tire;

s6, assembling the semi-finished tire on a forming machine according to the construction standard to form a qualified tire blank;

and S7, putting the blank in the S6 into a mould for co-crosslinking, and finishing the vulcanization process until the finished tire is produced.

Further, the accelerator is provided as a mixture of pentamethylene disulfide carbamate and polychlorinated triborate ester with equal weight.

Example 3:

the solid tire with strong flexibility comprises main materials and auxiliary materials, wherein the main materials comprise natural rubber and butadiene rubber, and the auxiliary materials comprise an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and a wear-resisting agent;

further, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 110 parts of butadiene rubber: 50 parts of accelerator: 0.6 part of antioxidant: 0.4 part of zinc oxide: 5 parts of sulfur: 0.9 part of foaming agent: 10 parts of coupling agent: 1.2 parts of brightener: 14 parts of an anti-fatigue agent: 10 parts of stearic acid: 6 parts of coumarone resin: 1.8 parts of: 1.1 parts of carbon black: 6.5 parts of an anti-wear agent: 10.5 parts;

further, the coupling agent is set as an SI-69 coupling agent, the anti-fatigue agent is set as an anti-fatigue agent pl-600, and the antioxidant is set as an antioxidant 502;

further, the preparation method comprises the following specific steps:

s1, buying the main materials and auxiliary materials needed in the formula, checking the purchased raw materials and auxiliary materials, and keeping the check result for later use after the check result meets the standard;

s2, placing natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent into an internal mixer according to the material ratio;

s3, cooling the mixture after the rubber mixing in the step S2, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection; cutting the mixture in the S4 into a required shape according to construction standards by using the big curtain cloth roll in the previous process to manufacture a semi-finished tire;

s4, assembling the semi-finished tire of S3 on a forming machine according to construction standards to form a qualified tire blank;

and S5, putting the blank in the S4 into a mould for co-crosslinking, and finishing the vulcanization process.

Further, the promoter is a promoter ZS, a promoter CZ and a promoter DM in a weight ratio of 3: 1: 2, or a mixture thereof.

Example 4:

the solid tire with strong flexibility comprises main materials and auxiliary materials, wherein the main materials comprise natural rubber and butadiene rubber, and the auxiliary materials comprise an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and a wear-resisting agent;

further, the feed additive is prepared from the following raw materials in parts by weight:

natural rubber: 130 parts of butadiene rubber: 60 parts of accelerator: 0.7 part of antioxidant: 0.5 part of zinc oxide: 6 parts of sulfur: 1 part of foaming agent: 12 parts of coupling agent: 1.4 parts of brightener: 17 parts of an anti-fatigue agent: 12 parts and stearic acid: 3-7 parts of coumarone resin: 2.2 parts of carbon black: 7.5 parts of an anti-wear agent: 12.5 parts;

further, the coupling agent is set as an SI-69 coupling agent, the anti-fatigue agent is set as an anti-fatigue agent pl-600, and the antioxidant is set as an antioxidant 502;

further, the preparation method comprises the following specific steps:

s1, buying the main materials and auxiliary materials needed in the formula, checking the purchased raw materials and auxiliary materials, and keeping the check result for later use after the check result meets the standard;

s2, placing natural rubber, butadiene rubber, an accelerator, an antioxidant, zinc oxide, sulfur, a foaming agent, a coupling agent, a brightening agent, an anti-fatigue agent, stearic acid, coumarone resin, carbon black and an abrasion-resistant agent into an internal mixer according to the material ratio;

s3, cooling the mixture after the rubber mixing in the step S2, inspecting after cooling, and allowing the mixture to flow into a semi-finished product manufacturing process after passing the inspection; cutting the mixture in the S4 into a required shape according to construction standards by using the big curtain cloth roll in the previous process to manufacture a semi-finished tire;

s4, assembling the semi-finished tire of S3 on a forming machine according to construction standards to form a qualified tire blank;

and S5, putting the blank in the S4 into a mould for co-crosslinking, and finishing the vulcanization process.

Further, the promoter is a promoter ZS, a promoter CZ and a promoter DM in a weight ratio of 3: 1: 2, or a mixture thereof.

The following data were obtained from experiments conducted on solid tires prepared in examples 1-4 above:

as can be seen from the above table, the solid tires obtained in examples 1 to 4 all showed better puncture resistance, thermal conductivity and wear resistance, except that the ratio of natural rubber, butadiene rubber, accelerator, antioxidant, zinc oxide, sulfur, foaming agent, coupling agent, brightener, anti-fatigue agent, stearic acid, coumarone resin, carbon black and wear-resistant agent was varied, the tire obtained in example 4 showed the best thermal conductivity, heat dissipation and anti-blowout effect, the tire obtained in example 1 showed the best wear resistance, the tire obtained in example 3 showed the best deformation in puncture resistance, and was most suitable for roads with sharp objects on the road surface, and the tire obtained in example 2 showed the best comprehensive deformation in puncture resistance, thermal conductivity and wear resistance.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.