1. The utility model provides a polyurethane high-speed tire that resistance to compression bearing capacity is strong which characterized in that: the polyurethane high-speed tire comprises the following components:

the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g.

2. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the cross-linking agent comprises 20-24% of ethylene-hydroxyethyl acrylate copolymer, 30-32% of polyethylene glycol 1000 and 44-50% of diethylene glycol.

3. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the catalyst is one or more of dibutyl tin dilaurate, stannous octoate and pentamethyl diethylenetriamine.

4. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the stabilizer comprises 26-32% of trisnonylphenyl phosphite, 35-40% of ammonium citrate and 28-39% of disodium ethylene diamine tetraacetate.

5. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the polyether polyol is polyoxypropylene polyol, and the molecular weight of the polyoxypropylene polyol is 8500-9000.

6. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the polyurethane high-speed tire also comprises 1-3 parts of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer and 0.5-2 parts of chloroplatinic acid-divinyl tetramethyl disiloxane complex.

7. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the polyurethane high-speed tire also comprises 3-6 parts of boron oxide.

8. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 1, wherein: the polyurethane high-speed tireFurther comprises (Mo, W) Si₂1-4 parts.

9. The high speed polyurethane tire with high compressive and load bearing capacity as claimed in claim 7, wherein: the particle size of the polyurethane boron oxide is 60-80 nm.

Background

The conventional rubber tire has many defects, such as short service life, poor wear resistance and poor compression weighing performance, and particularly a heavy-load high-speed tire often causes a tire burst phenomenon due to limited load bearing capacity.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the polyurethane high-speed tire with strong compression resistance and bearing capacity, which can improve the compression resistance and weighing capacity of the polyurethane tire. The technical scheme adopted by the invention is as follows:

a high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

the POE resin is a copolymer of ethylene and octene, wherein the comonomer is octene (C)₈H₁₆) The content of the polyolefinic.

The foaming agent has higher surface activity, can effectively reduce the surface tension of liquid, is arranged on the surface of a liquid film by two electronic layers to surround air to form bubbles, and then the bubbles form foam.

The polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the cross-linking agent comprises 20-24% of ethylene-hydroxyethyl acrylate copolymer, 30-32% of polyethylene glycol 1000 and 44-50% of diethylene glycol. The cross-linking agent is used for generating chemical bonds among linear molecules to enable the linear molecules to be mutually connected to form a net structure, so that the strength and elasticity of the rubber are improved.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the catalyst is one or more of dibutyl tin dilaurate, stannous octoate and pentamethyl diethylenetriamine.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the stabilizer comprises 26-32% of trisnonylphenyl phosphite, 35-40% of ammonium citrate and 28-39% of disodium ethylene diamine tetraacetate. The trisnonylphenyl phosphite, the ammonium citrate and the ethylene diamine tetraacetic acid are taken as stabilizing agents, and the stabilizing agents have good compatibility with the polyol and the isocyanate and coupling effect with the polyol, so that the polyurethane resin is uniformly plasticized in the processing process, the plasticizing temperature is low, and the impact resistance of the polyurethane tire is good.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the polyether polyol is polyoxypropylene polyol, and the molecular weight of the polyoxypropylene polyol is 8500-9000.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the polyurethane high-speed tire also comprises 1-3 parts of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer and 0.5-2 parts of chloroplatinic acid-divinyl tetramethyl disiloxane complex.

According to the scheme, the tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer is added, so that the wear resistance and weather resistance of the polyurethane tire are improved, the toughness in the polyurethane can be obviously improved, and the strength of the polyurethane tire in a severe environment for a long time is improved; the catalytic reaction of polyurethane is accelerated by adding chloroplatinic acid-divinyl tetramethyl disiloxane complex as a polyurethane catalyst.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the polyurethane high-speed tire also comprises 3-6 parts of boron oxide. After the boron oxide is combined with the tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer, the stress in the system can be reduced, the toughness of the polyurethane is improved, and the polyurethane has higher compressive load-bearing strength.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the polyurethane high-speed tire also comprises (Mo, W) Si₂1-4 parts. (Mo, W) Si₂The composite material has a synergistic effect, and after the composite material is combined with boron oxide, the toughness of polyurethane can be synergistically improved, and the internal stress of a system is reduced, so that the composite material has the highest bearing capacity and strength, and the wear resistance of a polyurethane tire is improved.

Preferably, the polyurethane high-speed tire with strong compressive and load-bearing capacity is prepared by the following steps: the particle size of the polyurethane boron oxide is 60-80 nm. The particle size of the boron oxide should be limited, and the range is preferably 60-80nm, if the particle size is less than 60nm, the particle size is too small, which easily causes that the boron oxide cannot be well dispersed in a high polymer viscous system to form local agglomeration, so that the uniformity of finally obtained polyurethane is reduced; if the particle size is larger than 80nm, the particle size is larger, and the self weight is heavier, so that the particles are easy to deposit at the bottom in a viscous polymer system, the quantity of nano particles actually dispersed in the system is reduced, and the load-bearing performance and the wear-resisting performance of the polyurethane are influenced.

The invention has the advantages that: according to the polyurethane high-speed tire with strong compression resistance and bearing capacity, the tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer is added, so that the wear resistance and weather resistance of the polyurethane tire are improved, the toughness in the polyurethane can be obviously improved, and the strength of the polyurethane tire in a severe environment for a long time is improved; boron oxide and (Mo, W) Si₂The toughness and strength of the polyurethane are improved, so that the polyurethane has higher compression-resistant load-bearing strength.

Detailed Description

The present invention will be further described with reference to the following specific examples.

Example 1

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

60 parts of polyol; 5 parts of POE resin; 3 parts of a crosslinking agent; 1 part of sodium abietate; 2 parts of a catalyst; 10 parts of diphenylmethane diisocyanate; 2 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, the hydroxyl value is 360-400mgKOH/g, and the crosslinking agent comprises 20% of ethylene-hydroxyethyl acrylate copolymer, 30% of polyethylene glycol 1000 and 20% -40% of diethylene glycol; the catalyst is dibutyltin dilaurate, and the stabilizer comprises 26% of trisnonylphenyl phosphite, 35% of ammonium citrate and 39% of disodium ethylene diamine tetraacetate; the polyether polyol is polyoxypropylene polyol, and the molecular weight of the polyoxypropylene polyol is 8500-9000; 1 part of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer, 0.5 part of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 3-6 parts of boron oxide, (Mo, W) Si₂1 part, and the particle size of the boron oxide is 60-80 nm.

Example 2

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

70 parts of polyol; 7 parts of POE resin; 4 parts of a crosslinking agent; 1.2 parts of sodium abietate; 3 parts of a catalyst; 12 parts of diphenylmethane diisocyanate; 4 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g; the cross-linking agent comprises 22% of ethylene-hydroxyethyl acrylate copolymer, 31% of polyethylene glycol 1000 and 49% of diethylene glycol; the catalyst is stannous octoate, the stabilizer comprises 30% of trisnonylphenyl phosphite, 36% of ammonium citrate and 36% of disodium ethylene diamine tetraacetate, and the polyether polyol isPolyoxypropylene polyol having a molecular weight of 8500-9000, tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer 2 parts and chloroplatinic acid-divinyltetramethyldisiloxane Complex 1 part, boron oxide 4 parts, (Mo, W) Si₂3 parts of boron oxide with the grain diameter of 60-80 nm.

Example 3

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

90 parts of polyol; 10 parts of POE resin; 5 parts of a crosslinking agent; 1.5 parts of sodium abietate; 4 parts of a catalyst; 15 parts of diphenylmethane diisocyanate; 6 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g; the cross-linking agent comprises 24% of ethylene-hydroxyethyl acrylate copolymer, 32% of polyethylene glycol 1000 and 45% of diethylene glycol, the catalyst is pentamethyldiethylenetriamine, the stabilizing agent comprises 32% of trisnonylphenyl phosphite, 40% of ammonium citrate and 28% of ethylene diamine tetraacetic acid disodium, the polyether polyol is polyoxypropylene polyol, the molecular weight of the polyoxypropylene polyol is 8500-9000, 3 parts of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer and 2 parts of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 6 parts of boron oxide, and (Mo, W) Si₂4 parts of boron oxide with the grain diameter of 60-80 nm.

Comparative example 1

60 parts of polyol; 3 parts of a crosslinking agent; 1 part of sodium abietate; 2 parts of a catalyst; 10 parts of diphenylmethane diisocyanate; 2 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, the hydroxyl value is 360-400mgKOH/g, and the crosslinking agent comprises 20% of ethylene-hydroxyethyl acrylate copolymer, 30% of polyethylene glycol 1000 and 20% -40% of diethylene glycol; the catalyst is dibutyltin dilaurate, and the stabilizer comprises 26% of trisnonylphenyl phosphite, 35% of ammonium citrate and 39% of disodium ethylene diamine tetraacetate; the polyether polyol being a polyoxy-alkylene oxideThe molecular weight of the propylene polyol and the polyoxypropylene polyol is 8500-9000; 1 part of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer, 0.5 part of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 3-6 parts of boron oxide, (Mo, W) Si₂1 part, and the particle size of the boron oxide is 60-80 nm.

Comparative example 2

60 parts of polyol; 5 parts of POE resin; 3 parts of a crosslinking agent; 1 part of sodium abietate; 2 parts of a catalyst; 10 parts of diphenylmethane diisocyanate; 2 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, the hydroxyl value is 360-400mgKOH/g, and the crosslinking agent comprises 20% of ethylene-hydroxyethyl acrylate copolymer, 30% of polyethylene glycol 1000 and 20% -40% of diethylene glycol; the catalyst is dibutyl tin dilaurate, and the stabilizer comprises 26% of trisnonylphenyl phosphite and 74% of ammonium citrate; the polyether polyol is polyoxypropylene polyol, and the molecular weight of the polyoxypropylene polyol is 8500-9000; 1 part of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer, 0.5 part of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 3-6 parts of boron oxide, (Mo, W) Si₂1 part, and the particle size of the boron oxide is 60-80 nm.

Comparative example 3

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

70 parts of polyol; 7 parts of POE resin; 4 parts of a crosslinking agent; 1.2 parts of sodium abietate; 3 parts of a catalyst; 12 parts of diphenylmethane diisocyanate; 4 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g; the cross-linking agent comprises 22% of ethylene-hydroxyethyl acrylate copolymer, 31% of polyethylene glycol 1000 and 49% of diethylene glycol; the catalyst is stannous octoate, the stabilizer comprises 30% of trisnonylphenyl phosphite, 36% of ammonium citrate and 36% of ethylene diamine tetraacetic acid, and the polyether polyol is polyoxypropylene polyol which is polyoxypropyleneThe molecular weight of the polyhydric alcohol is 8500-9000, 1 part of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 4 parts of boron oxide, and (Mo, W) Si₂3 parts of boron oxide with the grain diameter of 60-80 nm.

Comparative example 4

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

70 parts of polyol; 7 parts of POE resin; 4 parts of a crosslinking agent; 1.2 parts of sodium abietate; 3 parts of a catalyst; 12 parts of diphenylmethane diisocyanate; 4 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g; the cross-linking agent comprises 22% of ethylene-hydroxyethyl acrylate copolymer, 31% of polyethylene glycol 1000 and 49% of diethylene glycol; the catalyst is stannous octoate, the stabilizer comprises 30% of trisnonylphenyl phosphite, 36% of ammonium citrate and 36% of ethylene diamine tetraacetic acid disodium, the polyether polyol is polyoxypropylene polyol, the molecular weight of the polyoxypropylene polyol is 8500-9000, 2 parts of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer and 1 part of chloroplatinic acid-divinyltetramethyldisiloxane complex, and the (Mo, W) Si is₂And 3 parts.

Comparative example 5

A high-speed polyurethane tire with high compression and load bearing capacity is disclosed, wherein: the polyurethane high-speed tire comprises the following components:

90 parts of polyol; 10 parts of POE resin; 5 parts of a crosslinking agent; 1.5 parts of sodium abietate; 4 parts of a catalyst; 15 parts of diphenylmethane diisocyanate; 6 parts of a stabilizer; the polyol comprises polyester polyol and polyether polyol, the molecular weight of the polyester polyol is 3200-3600, the polyester polyol is obtained by condensing glutaric acid and trimethylolpropane, and the hydroxyl value is 360-400 mgKOH/g; the cross-linking agent comprises 24% of ethylene-hydroxyethyl acrylate copolymer, 32% of polyethylene glycol 1000 and 45% of diethylene glycol, the catalyst is pentamethyl diethylenetriamine, the stabilizing agent comprises 32% of trisnonylphenyl phosphite, 40% of ammonium citrate and 28% of ethylene diamine tetraacetic acid disodium, the polyether polyol is polyoxypropylene polyol, the molecular weight of the polyoxypropylene polyol is 8500-9000, 3 parts of tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer and 2 parts of chloroplatinic acid-divinyl tetramethyl disiloxane complex, 6 parts of boron oxide, and the particle size of the boron oxide is 60-80 nm.

The results of the performance tests of examples 1-3 and comparative examples 1-5 are listed below:

TABLE 1

As can be seen from Table 1, in comparative example 1, POE resin is not added, and the strength and hardness of the polyurethane tire are lower; comparative example 2 disodium edetate was not added to reduce the load bearing properties of the polyurethane; comparative example 3 no tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer was added, which has an effect on both the hardness and wear resistance; comparative examples 4 and 5 did not add boron oxide and (Mo, W) Si₂Has an influence on strength, hardness and wear properties.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.