CN-120966184-B - Tank road wheel natural rubber material and preparation method thereof

Abstract

The invention belongs to the field of rubber, and particularly relates to a natural rubber material for a tank road wheel and a preparation method thereof. The natural rubber material for the tank road wheels comprises natural rubber, zinc 10-undecylenate, aluminum acrylate, 4-vinyl-methyl benzoate, benzoyl peroxide, modified carbon black, modified chopped carbon fiber, stearic acid, an anti-aging agent, aluminum hydroxide, dibutyl phthalate and sulfur. The rubber material prepared by the invention has 58-60 Shore A degree hardness, tensile strength up to 37.54MPa, elongation at break and 300% stretching stress up to 547.26% and 9.65MPa, and excellent comprehensive performance, and has better application in materials such as tank bogie caterpillar tracks.

Inventors

• LI YUN
• DENG JIHUI
• TANG YAO
• CUI DAYONG
• ZHU YAOGUO
• CHEN HONG
• Zhao Xingcui
• ZHANG YING
• LIU BIN

Assignees

• 勐腊田野橡胶销售有限责任公司
• 云南田野橡胶集团有限公司

Dates

Publication Date

20260505

Application Date

20250915

Claims (5)

1. 1. The natural rubber material for the tank road wheels is characterized by comprising, by weight, 40-60 parts of natural rubber, 3-8 parts of 10-zinc undecylenate, 3-8 parts of aluminum acrylate, 5-10 parts of 4-vinyl-methyl benzoate, 0.3-2 parts of benzoyl peroxide, 20-35 parts of modified carbon black, 2-5 parts of modified chopped carbon fiber, 0.5-3 parts of stearic acid, 1-3 parts of an anti-aging agent, 4-10 parts of aluminum hydroxide, 1-3 parts of dibutyl phthalate and 0.2-1.8 parts of sulfur; Wherein the weight ratio of the zinc 10-undecylenate to the aluminum acrylate is 1:0.5-1.5; the preparation method of the modified carbon black comprises the steps of mixing the carbon black with concentrated nitric acid, heating and stirring for reflux reaction, filtering, washing to obtain a material, adding the material into a solution containing a silane coupling agent for heating reaction, filtering, washing and drying to obtain the modified carbon black; The preparation method of the modified chopped carbon fiber comprises the steps of soaking the chopped carbon fiber in an alkali solution, soaking in an acid solution, washing with water, heating with an aqueous solution of propenyl trimethoxy silane ethanol, filtering, and drying.
2. 2. The tank road wheel natural rubber material according to claim 1, wherein the weight ratio of carbon black to concentrated nitric acid is 1:10-50, and the reflux reaction temperature and time are 60-80 ℃ and 3-10 hours.
3. 3. The tank road wheel natural rubber material according to claim 1, wherein the weight ratio of the material to the solution containing the silane coupling agent is 1:10-50, the solvent in the solution containing the silane coupling agent is 20-40wt% of ethanol water solution, and the concentration of the silane coupling agent is 0.5-2.5wt%.
4. 4. A method for producing a tank road wheel natural rubber material according to any one of claims 1 to 3, comprising the steps of: (1) Adding natural rubber into an internal mixer, starting a rotor, heating, adding stearic acid and an anti-aging agent, mixing, adding modified carbon black, mixing, adding aluminum hydroxide and modified chopped carbon fiber, mixing, adding dibutyl phthalate, continuously mixing, discharging rubber, cooling, and standing to obtain a rubber compound; (2) Adding the rubber compound into an open mill, controlling the temperature, setting the roll gap, adding 10-zinc undecylenate, aluminum acrylate and 4-vinyl-methyl benzoate for mixing after mixing, adding benzoyl peroxide and sulfur for mixing, and adjusting the roll gap to obtain a film for later use; (3) Vulcanizing the rubber sheet in a plate vulcanizing machine, and cooling to obtain the tank road wheel natural rubber material.
5. 5. The process according to claim 4, wherein the temperature is controlled to not higher than 60 ℃ in (2).

Description

Tank road wheel natural rubber material and preparation method thereof Technical Field The invention belongs to the field of rubber, and particularly relates to a natural rubber material for a tank road wheel and a preparation method thereof. Background The tank bogie rubber is a key functional component in a tank running system, and is mainly used for buffering, damping and wear resistance between the bogie and a track as well as between the bogie and the ground, and the performance of the tank bogie rubber directly influences the running smoothness, the service life of the track and the battlefield adaptability of the tank. The road wheel rubber absorbs the impact force of jolt on the ground and the crawler belt transmission through self elastic deformation, so that vibration damage to a vehicle body and internal equipment is reduced, and meanwhile, the comfort of passengers is improved. The bogie wheel is in direct contact with the track chain links, the rubber layer can reduce the hard friction between metals, reduce the abrasion of the track and the bogie wheel, and prolong the service lives of the track and the bogie wheel. The elastic deformation of the rubber can adapt to complex terrains (such as mud, broken stone and slopes), so that stable support of the bogie wheel on the crawler belt is ensured, and the stability and operability of tank running are maintained. The invention patent with the publication number of CN114891280A discloses a super-strong tearing-resistant track rubber composition, which belongs to the technical field of super-strong tearing-resistant track rubber and comprises the following raw materials, by weight, 140-160 parts of water-method mixed functional group modified white carbon black natural rubber, 10-30 parts of reinforcing filler, 10-20 parts of silane coupling agent, 1-6 parts of plasticizer, 5-10 parts of active agent, 2-6 parts of anti-aging agent, 1-5 parts of vulcanizing agent, 2-5 parts of vulcanization accelerator and 0.1-0.5 part of scorch retarder. The invention patent with publication number of CN113896962A discloses a rubber material for shock-absorbing products of armored vehicles, wherein the rubber material comprises, by mass, 100 parts of raw rubber, 70 parts of NANCAR1043A, 30 parts of NANCAR1965, 5-8 parts of zinc oxide, 0.1-0.2 part of accelerator D, 0.4-0.6 part of accelerator DM, 1-3 parts of stearic acid, 2-4 parts of antioxidant NAPM, 25-35 parts of carbon black N339, 25-35 parts of carbon black N660, 10-13 parts of dibutyl phthalate, 1-2 parts of anti-cracking B10, 0.05 part of sulfur and 1-3 parts of accelerator TMTD. The invention increases the mechanical property of the rubber product and improves the service performance of the rubber product, solves the technical problem of corrosion and aging, and meets the performance requirements of modern tanks. The invention patent with publication number CN103756079B discloses a method for improving the performance of rubber coated track shoe rubber by compounding modified cerium oxide, wherein at least two modifiers are used for respectively modifying the cerium oxide, 0.1-10% of compounded modified cerium oxide is added by a mechanical blending method on the basis of keeping the original production formula and production flow of the rubber unchanged, and the performance, particularly the wear resistance and tear resistance of the rubber coated track shoe rubber are improved. The tensile strength and the tearing strength of the rubber obtained by the invention are respectively improved by 11 percent and 41 percent, the abrasion loss is reduced by 16 percent, and the rubber crawler belt is suitable for large-scale machinery such as tanks, boom cranes, agricultural harvesters and the like. The invention patent with publication number of CN101475713B discloses a rubber composition, in particular relates to a rubber composition for crawler equipment, which mainly comprises hydrogenated nitrile rubber and other auxiliary materials such as unsaturated carboxylic acid metal salt. The rubber composition has good physical and mechanical properties and thermal-oxidative aging resistance, is particularly suitable for crawler rubber blocks of crawler equipment, such as tanks, armored vehicles, crawler tractors, excavators and other crawler equipment, greatly reduces the impact between a metal crawler and the ground and the noise caused by the impact, and avoids the damage of the metal crawler to the road surface (particularly high-grade roads). The invention patent publication No. CN111484654B discloses a heat conductive rubber material and a rubber track. The preparation method of the rubber material comprises the steps of mixing a raw material composition, wherein the raw material composition comprises, by weight, 100 parts of a rubber raw material, 20-30 parts of first pretreated carbon fibers, 25-35 parts of second pretreated hexagonal boron nitride powder, 25-35 parts of third pretreated nano powder, wherein