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Preparation method of polyurethane elastomer for anti-puncture and anti-explosion of tires

A polyurethane elastomer and anti-pricking technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as inconvenient use and complexity, and achieve the advantages of easy use, adjustable softness and hardness, good toughness and tensile properties Effect

Active Publication Date: 2021-08-06
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of this liner requires a more complicated mold, and the entire curing time also takes more than 4 hours, which is inconvenient to use

Method used

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  • Preparation method of polyurethane elastomer for anti-puncture and anti-explosion of tires
  • Preparation method of polyurethane elastomer for anti-puncture and anti-explosion of tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of component A: Take an appropriate amount of polyether polyol INOVOL C230 and heat it to 100°C, vacuum dehydrate for two hours, then cool down to below 70°C, add an appropriate amount of isocyanate (MDI-50), and heat up to 80°C to react for two Hour, obtain prepolymer, prepare INOVOL C240A by the same method, INOVOL F330N prepolymer, INOVOL C230, INOVOL C240A, the NCO content of INOVOL F330N prepolymer is respectively 4.6%, 2.7%, 2.8%. Take 20 grams of INOVOL C230 and INOVOLC240A prepolymers respectively, take 7 grams of INOVOL F330N prepolymers, mix and add 2.5 grams of MDI-50, stir evenly to obtain component A, seal and store for later use.

[0029] (2) Preparation of component B: take 1.8 g of ethylene glycol and 0.2 g of catalyst dibutyltin dilaurate, and mix them uniformly to obtain component B.

[0030] (3) Mix and stir components A and B prepared above, spray on the inner side of the tire casing, and place it in the drying room at 80°C for 10 min...

Embodiment 2

[0032] (1) Preparation of component A: Take an appropriate amount of polyether polyol INOVOL C230 and heat it to 100°C for vacuum dehydration for two hours, then cool down to below 70°C and add an appropriate amount of isocyanate (MDI-50 accounts for 90%, PM200 accounts for 10%), Raise the temperature to 80°C and react for two hours to obtain a prepolymer. The same method is used to prepare INOVOL C240A, INOVOL F330N prepolymer, INOVOLC230, INOVOL C240A, and the NCO content of INOVOL F330N prepolymer is 4.6%, 2.7%, and 2.8%, respectively. Take 20 grams of INOVOL C230 and INOVOL C240A prepolymers respectively, take 7 grams of INOVOL F330N prepolymers, mix and add 2.5 grams of MDI-50, stir well to get A component, seal and store for later use.

[0033] (2) Preparation of component B: take 1.95 g of propylene glycol and 0.22 g of catalyst dibutyltin dilaurate, and mix them uniformly to obtain component B.

[0034] (3) After mixing and stirring components A and B prepared above, a...

Embodiment 3

[0036] (1) Preparation of component A: Take an appropriate amount of polyether polyol INOVOL C220 and heat it to 100°C for vacuum dehydration for two hours, then lower the temperature to below 70°C, add an appropriate amount of isocyanate (MDI-50), and heat up to 80°C for two hours , Obtain prepolymer, prepare INOVOL C240A by the same method, INOVOL F330N prepolymer, INOVOL C220, INOVOL C240A, the NCO content of INOVOL F330N prepolymer is respectively 3.4%, 2.7%, 2.8%. Take 20 grams of INOVOL C230 and INOVOLC240A prepolymers respectively, take 7 grams of INOVOL F330N prepolymers, mix and add 2.5 grams of MDI-50, stir evenly to obtain component A, seal and store for later use.

[0037] (2) Preparation of component B: take 1.8 g of ethylene glycol and 0.2 g of catalyst dibutyltin dilaurate, and mix them uniformly to obtain component B.

[0038] (3) Mix and stir components A and B prepared above, spray on the inner side of the tire casing, and place it in the drying room at 80°C ...

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Abstract

The invention belongs to the technical field of preparation of functional polymer materials, and in particular relates to a preparation method of a polyurethane elastomer used for anti-puncture and anti-explosion of tires. The method comprises the following steps: 1) reacting polyether polyol with isocyanate to prepare an NCO-terminated prepolymer; 2) adding isocyanate to the prepolymer and stirring evenly to obtain component A; 3) adding Catalyst, uniformly dispersed to obtain component B; 4) When using, mix component A and component B uniformly, spray or smear to shape, heat to 80-100°C to cure, and then obtain polyurethane for anti-puncture and explosion protection of tires Elastomer; wherein, the polyether polyols are three or four of INOVOL C220, INOVOL C230, INOVOL C240A or INOVOL F330N. The preparation method of the invention is simple, can be applied to the anti-puncture and anti-explosion of tires, is convenient to use, and does not need expensive and complicated moulds.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional polymer materials, and in particular relates to a preparation method of a polyurethane elastomer used for anti-puncture and anti-explosion of tires. Background technique [0002] At present, most of the car tires are installed with ordinary rubber tires, but pneumatic tires have a disadvantage, that is, they are afraid of air leakage and puncture. Tires are very important to the safety of cars. Once a tire bursts or is punctured, it will leak air quickly, which will easily lead to traffic accidents, especially when the car is running at high speed. Once the tire leaks, it will deform and shrink, the car will lose its balance and turn to one side, and the driver cannot control the direction and brake. Therefore, it is of great significance for the safe driving of automobiles to maintain the normal tire pressure of automobile tires and do a good job in anti-puncture and explosion-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/32C09D175/08
CPCC08G18/12C08G18/4804C08G18/6674C09D175/08C08G18/3206
Inventor 徐军张士虎孙兆任李剑锋公维英
Owner SHANDONG INOV NEW MATERIALS CO LTD