阅读说明：本技术 一种应用纳米材料制作的工程内胎及其生产方法 (Engineering inner tube made of nano material and production method thereof ) 是由 蒋延伟 何长军 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种应用纳米材料制作的工程内胎及其生产方法,该内胎包括如下组分：天然胶65--80份、丁苯胶20-35份、纳米氧化锌2.5-3.5份、纳米碳酸钙40-50份、炭黑15-22份、碳纳米管5-10份、硬脂酸1.7-2.5份、硫化促1.8-2.2份、促进剂1.2-1.8、防老剂2.5-3.5份、塑解剂0.2-0.3份、软化剂、12-18份、增粘剂4-7份。本发明的有益效果是,内胎的重量小,生产成本低廉。(The invention discloses an engineering inner tube made of nano materials and a production method thereof, wherein the inner tube comprises the following components: 65-80 parts of natural rubber, 20-35 parts of butadiene styrene rubber, 2.5-3.5 parts of nano zinc oxide, 40-50 parts of nano calcium carbonate, 15-22 parts of carbon black, 5-10 parts of carbon nano tube, 1.7-2.5 parts of stearic acid, 1.8-2.2 parts of vulcanization accelerator, 1.2-1.8 parts of accelerator, 2.5-3.5 parts of anti-aging agent, 0.2-0.3 part of peptizer, 12-18 parts of softener and 4-7 parts of tackifier. The invention has the advantages of small weight of the inner tube and low production cost.)

1. An engineering inner tube made of nano materials and a production method thereof are characterized in that the inner tube comprises the following components:

65-80 parts of natural rubber, 20-35 parts of butadiene styrene rubber, 2.5-3.5 parts of nano zinc oxide, 40-50 parts of nano calcium carbonate, 15-22 parts of carbon black, 5-10 parts of carbon nano tube, 1.7-2.5 parts of stearic acid, 1.8-2.2 parts of vulcanization accelerator, 1.2-1.8 parts of accelerator, 2.5-3.5 parts of anti-aging agent, 0.2-0.3 part of peptizer, 12-18 parts of softener and 4-7 parts of tackifier;

the manufacturing process flow of the inner tube is as follows:

step one, mixing by adopting an internal mixer, mixing the rubber material according to the mixing process specification, wherein the rubber discharge temperature of the rubber material at the first mixing section is 145-150 ℃, and the rubber discharge temperature of the vulcanizing agent at the second mixing section is 90-95 ℃.

Extruding the rubber compound into a tire tube according to the construction size by using an extruder;

step three, standing the extruded tyre cylinder for 1-24 hours, and jointing by using a jointing machine;

step four, standing the tire cylinder with the connected head for 4 hours, then molding by using a molding disc, and then vulcanizing by using a vulcanizing machine special for the inner tire to obtain a finished product;

and fifthly, checking physical properties of the finished inner tube to ensure that all properties of the finished inner tube meet standard requirements.

2. The inner tube made of nanomaterial and the manufacturing method thereof according to claim 1, wherein the inner tube comprises the following components: 70 parts of natural rubber, 30 parts of butadiene styrene rubber, 3 parts of nano zinc oxide, 45 parts of nano calcium carbonate, 15 parts of carbon black, 6 parts of carbon nano tubes, 1.9 parts of stearic acid, 1.9 parts of vulcanization accelerator, 1.8 parts of accelerator, 3.2 parts of anti-aging agent, 0.2 part of peptizer, 14 parts of softener and 5 parts of tackifier.

3. The inner tube made of nanomaterial and the manufacturing method thereof according to claim 1, wherein the inner tube comprises the following components: 80 parts of natural rubber, 20 parts of butadiene styrene rubber, 3 parts of nano zinc oxide, 50 parts of nano calcium carbonate, 15 parts of carbon black, 8 parts of carbon nano tube, 1.9 parts of stearic acid, 2 parts of vulcanization accelerator, 1.5 parts of accelerator, 3.4 parts of anti-aging agent, 0.25 part of peptizer, 12 parts of softener and 4 parts of tackifier.

4. The inner tube manufactured by the nano material and the manufacturing method thereof according to claim 1, wherein the nano calcium carbonate is manufactured by calcium carbonate ore with calcium carbonate content of more than 97.5% and magnesium oxide content of less than 0.6%.

5. The inner tube manufactured by using nano materials and the manufacturing method thereof according to claim 1, wherein the natural rubber is SCR L or SCR 5.

6. The inner tube manufactured by using nano materials and the manufacturing method thereof according to claim 1, wherein the styrene butadiene rubber is SBR 1500 or SBR 1502.

7. The inner tube manufactured by using nano materials and the manufacturing method thereof according to claim 1, wherein the carbon black is N220, and the resin is E1102.

8. The inner tube manufactured by using nano materials and the manufacturing method thereof according to claim 1, wherein the performance requirements of the finished inner tube include: the strength was 18.2MPa, the elongation was 645%, and the hardness was 53.

9. The inner tube made of nanomaterial and its manufacturing method according to claim 1, wherein 270L Banbury mixer is used as the Banbury mixer.

10. The inner tube manufactured by using nano materials and the manufacturing method thereof according to claim 1, wherein the extruder is an extruder with a diameter of 250.

Technical Field

The invention relates to the technical field of production of engineering inner tubes, in particular to an engineering inner tube made of nano materials and a production method thereof.

Background

The inner tube is an important part of the tire, the carbon black reinforcing agent specially used for the traditional inner tube formula has high price, large heat generation in mixing and extrusion processes, poor self-adhesion of rubber materials, influence on the bonding strength of an inner tube connector and a valve opening, heavy weight, high cost and the like of the produced engineering inner tube, and the main reason for the problems is the limitation of the production process and raw materials; however, with the appearance of new raw materials in recent years, the possibility of improving the manufacturability and the physical and mechanical properties of the rubber material is created, so that what kind of nano material is to be applied and how to apply the nano material to improve the manufacturability and the physical and mechanical properties of the rubber material, the material cost is reduced, and the weight of the inner tube is reduced, which is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to solve the problems and designs an engineering inner tube made of nano materials and a production method thereof.

The technical scheme of the invention is that the engineering inner tube made of the nano material and the production method thereof comprise the following components:

65-80 parts of natural rubber, 20-35 parts of butadiene styrene rubber, 2.5-3.5 parts of nano zinc oxide, 40-50 parts of nano calcium carbonate, 15-22 parts of carbon black, 5-10 parts of carbon nano tube, 1.7-2.5 parts of stearic acid, 1.8-2.2 parts of vulcanization accelerator, 1.2-1.8 parts of accelerator, 2.5-3.5 parts of anti-aging agent, 0.2-0.3 part of peptizer, 12-18 parts of softener and 4-7 parts of tackifier;

the manufacturing process flow of the inner tube is as follows:

step one, mixing by adopting an internal mixer, mixing the rubber material according to the mixing process specification, wherein the rubber discharge temperature of the rubber material at the first mixing section is 145-150 ℃, and the rubber discharge temperature of the vulcanizing agent at the second mixing section is 90-95 ℃.

Extruding the rubber compound into a tire tube according to the construction size by using an extruder;

step three, standing the extruded tyre cylinder for 1-24 hours, and jointing by using a jointing machine;

step four, standing the tire cylinder with the connected head for 4 hours, then molding by using a molding disc, and then vulcanizing by using a vulcanizing machine special for the inner tire to obtain a finished product;

and fifthly, checking physical properties of the finished inner tube to ensure that all properties of the finished inner tube meet standard requirements.

The inner tube comprises the following components: 70 parts of natural rubber, 30 parts of butadiene styrene rubber, 3 parts of nano zinc oxide, 45 parts of nano calcium carbonate, 15 parts of carbon black, 6 parts of carbon nano tubes, 1.9 parts of stearic acid, 1.9 parts of vulcanization accelerator, 1.8 parts of accelerator, 3.2 parts of anti-aging agent, 0.2 part of peptizer, 14 parts of softener and 5 parts of tackifier.

The inner tube comprises the following components: 80 parts of natural rubber, 20 parts of butadiene styrene rubber, 3 parts of nano zinc oxide, 50 parts of nano calcium carbonate, 15 parts of carbon black, 8 parts of carbon nano tube, 1.9 parts of stearic acid, 2 parts of vulcanization accelerator, 1.5 parts of accelerator, 3.4 parts of anti-aging agent, 0.25 part of peptizer, 12 parts of softener and 4 parts of tackifier.

The nano calcium carbonate is made of calcium carbonate ore with calcium carbonate content of more than 97.5 percent and magnesium oxide content of less than 0.6 percent.

The model of the natural rubber is SCR L or SCR 5.

The styrene butadiene rubber is SBR 1500 or SBR 1502.

The carbon black is N220, and the resin is E1102.

The various performance requirements of the finished inner tube include: the strength was 18.2MPa, the elongation was 645%, and the hardness was 53.

The internal mixer is 270L.

The extruder was a 250 diameter extruder.

Advantageous effects

The engineering inner tube made of the nano material and the production method thereof, which are manufactured by the technical scheme of the invention, have the following advantages:

1. the engineering inner tube produced by the technical scheme not only improves the quality of the product, but also reduces the cost, and is beneficial to enhancing the market competitiveness of the product;

2. the engineering inner tube produced by the technical scheme can meet the requirements of customers on quality and product price, and the produced product has light weight and high physical property, is durable, saves cost and reduces the waste of social resources by successfully applying the nano material in the engineering inner tube;

3. the dosage of the nano zinc oxide in the technical scheme is 1.5 to 2 percent lower than that of the common active agent, the activity is high, the price of the material is basically the same as that of the common active agent, and the production cost is saved;

4. the technical scheme adopts the novel high-reinforcement nano calcium carbonate, improves the physical property and the process property of the sizing material, reduces the production weight of the inner tube, has the price of 1/3 carbon black, reduces the material cost of each kilogram of the sizing material by 0.5 yuan, and can save more than 500 yuan per year according to the calculation of the sizing material used by 1 million tons of engineering tires produced per year.

5. The technical scheme adopts the application of the carbon nano tube material to improve the physical property of the sizing material, improve the plasticity of the sizing material and facilitate the molding vulcanization;

6. according to the technical scheme, the high-reinforcement nano calcium carbonate and the nanotube material are utilized to improve the strength (0.6MPa) of the inner tube, increase the using amount of the reinforcement filler, reduce the heat generation (5-8 ℃) in the processing process of the rubber material, reduce the Mooney viscosity (3-5) of the rubber material, and effectively improve the air tightness of the inner tube by the high-reinforcement nano material, so that the guarantee is provided for the weight reduction of the inner tube, and the weight of the engineering inner tube is reduced by 20%;

7. after the technical scheme adopts the nano material, the weight of the engineering inner tube is reduced by 20 percent, so that the vulcanization and the demolding of the inner tube are easier, the labor intensity of an operator can be greatly reduced, and the production efficiency is correspondingly improved.

Drawings

FIG. 1 is a schematic process flow diagram of an engineering inner tube made of nano materials and a production method thereof according to the present invention;

figure 2 is a table comparing the performance data of the finished inner tube made of the common material and the finished inner tube made of the nano material.

Detailed Description

The invention is described in detail below with reference to the drawings,