Tyre self-repairing agent

Abstract

The invention discloses a tyre self-repairing agent. The invention adopts the following technical scheme that: the tyre self-repairing agent consists of the following raw materials in part by weight: 3 to 7 parts of polyvinyl alcohol, 4 to 9 parts of copper sulfate, 4 to 12 parts of sodium nitrite, 2 to 5 parts of cellulose, 3 to 7 parts of gypsum powder, 1.5 to 4 parts of fine wood meal, 1 to 4 parts of organic bentonite, and 1.5 to 4 parts of water; and the tyre self-repairing agent is prepared by heating, stirring and mixing. The tyre self-repairing agent does not stick inner and outer tyres, has no corrosion or volatility, has good anti-freezing and explosion-proof properties, can prolong the service life of the tyres, and does not affect the dynamic balance when an automobile runs; and the preparation process is simple and low in cost, and can be widely popularized and applied.

Description

technical field [0001] The invention relates to a self-healing agent, in particular to a tire self-healing agent, which belongs to the technical field of chemical products. Background technique [0002] Tires are an indispensable and important part of transportation. Most of the tires used at this stage are pneumatic tires. Pneumatic tires have irreplaceable advantages in use, but they also have their own limitations: First, because pneumatic tires are made of rubber , it is easy to be punctured and deflated by sharp objects when driving. If this happens, it is often necessary to stop and remove the tire, and then replace the spare tire or repair the damaged inner tube. In this case, it will not only bring considerable inconvenience to the driver, especially This is especially the case when there is no tire repair equipment in remote areas. More importantly, when the car is running at high speed, it may cause serious safety accidents when the car is suddenly deflated. Second...

AI Technical Summary

Problems solved by technology

[0002] Tires are an indispensable and important part of transportation. Most of the tires used at this stage are pneumatic tires. Pneumatic tires have irreplaceable advantages in use, but they also have their own limitations: First, because pneumatic tires are made of rubber , it is easy to be punctured and deflated by sharp objects when driving. If this happens, it is often necessary to stop and remove the tire, and then replace the spare tire or repair the damaged inner tube. In this case, it will not only bring considerable inconvenience to the driver, especially This is especially the case when there is no tire repair equipment in remote areas. More importantly, when the car is running at high speed, it may cause serious safety accidents when the car is suddenly deflated. Second, the tire carcass will age after a certain period of use. Replacing tires will increase the operating cost of the car; third, when the car is running at high speed when the temperature is high, the gas in the carcass will expand under high temperature conditions, and when it expands to a certain extent, it will cause a tire blowout

This kind of self-repairing glue can play a certain role, but it also has irreparable defects: this kind of glue completely relies on its own strong viscosity to complete the repair action. When repairing the breach, it will bond the inner and outer tires of the tire and cannot be separated. This will cause the expensive outer tires to be unable to be reused, causing greater economic losses; the glue is also corrosive, which will block the valve; the glue also has strong volatility, and it evaporates into a gaseous state when heated and loses its repair ability; in addition The glue has poor antifreeze performance, and it will freeze when it is cold, which seriously affects the dynamic balance of the car when driving

After the successful development of this type of product, part of the problems have been better solved. However, because the research work is not thorough enough, there are still deficiencies in the use process: the first is that the material selection is not suitable, and the self-replenishing agent still uses a large amount of glue, It failed to fundamentally solve the problem of inner and outer tire bonding; second, the selection of the distribution ratio of each component cannot achieve the best effect, especially in the selection of the ratio of ethylene glycol antifreeze, which will lead to the antifreeze and self-replenishing effect of the car unsatisfactory

[0003] The tire self-sealing liquid that Chinese patent CN1070865 provides, by 13-20 parts of methyl cellulose sodium, 40-57 parts of methyl cellulose, 30-40 parts of gelatin, add 300,500,800 of 60-80 ℃ respectively Milliliter of hot water, stir to dissolve, then add 1000-1600 parts of glycerol and 1 / 3 of the total amount of 350-500 propylene glycol and mix evenly, finally collect each liquid and concentrate, add 20-80 parts The purpose of vulcanized rubber particles is 51-69 parts, which is the finished product after mixing; although its product has a certain bonding strength, its antifreeze performance is poor, and the price of raw materials is high, so it is not suitable for widespread promotion