Polyurethane airless tire, and manufacturing method and application thereof

A manufacturing method and airless technology, which is applied in the field of tire manufacturing, can solve problems such as poor cushioning and shock absorption performance, complicated process, and small sinking, and achieve the effects of improving cushioning and shock absorption performance, low driving temperature, and reducing noise

Inactive Publication Date: 2013-05-15
GUILIN HIMAXER BESTRY TIRE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two main types of polyurethane tires. One is polyurethane tread / rubber carcass composite structure tires. The preparation of this composite tire includes three main steps: the preparation of rubber carcass, the surface treatment of carcass and the pouring of composite tires. The process is more complicated; the other is the polyurethane solid tire, which pours polyurethane directly on the metal rim. The manufacturing process of the solid tire is simple, but the tire has a small sinkage during driving, poor cushioning and shock absorption performance, high noise, and certain damage to the vehicle. damage

Method used

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  • Polyurethane airless tire, and manufacturing method and application thereof
  • Polyurethane airless tire, and manufacturing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A kind of manufacture method of polyurethane airless tire, comprises the following steps:

[0041] (1) Surface treatment of metal rims

[0042] Sandblast, degrease and degrease the surface of the metal rim. After cleaning, evenly spray the adhesive Chemlock 218, park at 30°C for 30 minutes, and then put it in an oven at 100°C for 1 hour, then it can be used for pouring;

[0043] (2) Preparation of polyurethane prepolymer

[0044] Weigh 100 parts by weight of polytetrahydrofuran diol with an average molecular weight of 1000, and 12 parts by weight (8%) of nano-silica, mix the two and disperse them at a high speed, then put them into a reactor, heat to 120 ± 10 ° C, and evacuate to The residual pressure is less than 500Pa, water is removed for 2 hours, the temperature is lowered to 65±5°C, 200 parts by weight of diphenylmethane diisocyanate is added, and the temperature is raised to 75±2°C to react for 2 hours. Then the reaction mixture is transferred to a short-path di...

Embodiment 2

[0054] A kind of manufacture method of polyurethane airless tire, comprises the following steps:

[0055] (1) Surface treatment of metal rims

[0056] Sandblast, degrease and degrease the surface of the metal rim, clean it and evenly spray the adhesive CILBOND 48C, park it at 25°C for 45 minutes, then put it in an oven at 100°C for 45 minutes, and then it can be used for pouring;

[0057] (2) Preparation of polyurethane prepolymer

[0058] Taking by weighing average molecular weight is 50 weight parts of polycaprolactone diols of 1000, average molecular weight is 50 weight parts of polycaprolactone diols of 2000, nanometer montmorillonite 6.9 weight parts (5%), the three are mixed and high-speed Put it into the reaction kettle after dispersion, heat to 120±10°C, evacuate until the residual pressure is less than 500Pa, remove moisture for 2 hours, cool down to 85±5°C, put 24 parts by weight of p-phenylene diisocyanate, and heat up to 95±2 °C, react for 2 hours to obtain a pol...

Embodiment 3

[0068] A kind of manufacture method of polyurethane airless tire, comprises the following steps:

[0069] (1) Surface treatment of metal rims

[0070] Sandblast, degrease and degrease the surface of the metal rim, clean it and evenly spray the adhesive Thixon422, park it at 20°C for 60 minutes, then put it in an oven at 100°C for 30 minutes, and then it can be used for pouring;

[0071] (2) Preparation of polyurethane prepolymer

[0072] Weigh 100 parts by weight of polyester diol with an average molecular weight of 1500, put it into a reaction kettle, heat it to 120±10°C, evacuate until the residual pressure is less than 500Pa, remove moisture for 2 hours, cool down to 65±5°C, and put it into 34 parts by weight of MDI-50 (diphenylmethane diisocyanate), heated up to 75±2°C, and reacted for 2 hours to obtain a polyurethane prepolymer, wherein the cyanate content was about 4.2%, and the percentage of free MDI-50 monomer was Mineral content is less than 0.5%.

[0073] (3) mate...

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Abstract

The invention belongs to the field of tire manufacturing, and discloses a polyurethane airless tire, and a manufacturing method and application thereof. The polyurethane airless tire provided by the invention is composed of a metal rim and a polyurethane layer directly poured on the metal rim; and the polyurethane layer is a hollow structure. The manufacturing method comprises steps of: metal rim surface treatment, preparation of a polyurethane prepolymer, material preparation and casting. The hollow polyurethane tire structure provided by the invention is conducive to heat dissipation of tire during running, and low running temperature of the tire can eliminate the quality problem of tire body blasting; and the hollow polyurethane structure greatly improves the damping performance of the tire, and reduces noise and damage on the vehicle parts. In addition, the invention has simple manufacturing process, only comprises two steps of metal rim treatment and tire casting, and decreases many processes in production of rubber tire and polyurethane / rubber composite structure tire. The invention overcomes the defects of complex process and weak damping performance of an existing similar product.

Description

technical field [0001] The invention belongs to the field of tire manufacturing, and in particular relates to a polyurethane airless tire and its manufacturing method and application. Background technique [0002] Polyurethane is a material with excellent comprehensive properties and has unique comprehensive properties: a wide range of hardness, strength and modulus, high elongation, a wide range of operating temperatures, and good oil resistance, low temperature resistance, and Ozone aging and other characteristics, and the leading wear resistance, commonly known as "wear-resistant rubber", its wear resistance is 2-10 times that of natural rubber, and the molding process and equipment are simple, it is an ideal tire tread material. At present, there are two main types of polyurethane tires. One is polyurethane tread / rubber carcass composite structure tires. The preparation of this composite tire includes three main steps: the preparation of rubber carcass, the surface treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C7/00B29C39/10B29C39/22B29C70/58C08L75/04C08G18/66C08G18/10
Inventor 邹明清易玉华欧阳伦炜谢雷
Owner GUILIN HIMAXER BESTRY TIRE TECH
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