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Flame-retardant wear-resistant polyurethane wheel and preparation method thereof

A polyurethane and polyurethane prepolymer technology, which is applied in the field of polyurethane tires, can solve the problems of poor antistatic performance of polyurethane tires, gaps formed by pouring materials, deviations in hub groove grinding, etc., and achieve durable and reliable antistatic ability and heat resistance The effect of improving and improving the wear resistance

Inactive Publication Date: 2020-06-09
CHUZHOU YULIN POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. After the existing polyurethane tires are poured and formed, the tire surface does not have good flame retardancy, and the antistatic performance of polyurethane tires is poor, so it cannot provide antistatic protection for a long time;
[0006] 2. The existing polyurethane tires have poor cushioning performance and wear resistance during use, resulting in a low service life of polyurethane tires;
[0007] 3. During the pouring process of the existing polyurethane tires, due to the manual grinding on the outer circumference of the wheel hub, there are deviations in the grinding of the wheel hub grooves. Formation of gaps in the pouring material, affecting the pouring quality of polyurethane tires

Method used

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  • Flame-retardant wear-resistant polyurethane wheel and preparation method thereof
  • Flame-retardant wear-resistant polyurethane wheel and preparation method thereof
  • Flame-retardant wear-resistant polyurethane wheel and preparation method thereof

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Embodiment 1

[0037] see Figure 1~5 , a flame retardant and wear-resistant polyurethane wheel, comprising the following raw materials in parts by weight: 50 parts of polyether polyol, 20 parts of diphenylmethane diisocyanate, 1 part of foam stabilizer, 1 part of chain extender, 1 part of defoamer, 1 part of fuel, 1 part of glass fiber, 0.5 part of crosslinking agent, 3 parts of polyaniline modified bentonite, 10 parts of expandable graphite;

[0038] The preparation of the fire-resistant wear-resistant polyurethane wheel comprises the following steps:

[0039] Step 1: Add polyether polyol and diphenylmethane diisocyanate into the reactor, heat the reactor to 50-70°C through an electric heating mantle, replace the air in the reactor with nitrogen, and then add polyaniline into the reactor Modified bentonite, foam stabilizer, and chain extender, heat up to 80-90°C, stir at 200-300r / min for 25-35 minutes, after stirring, stand still, control the temperature in the reactor at 30-40°C, keep wa...

Embodiment 2

[0047] A flame-retardant and wear-resistant polyurethane wheel, comprising the following raw materials in parts by weight: 70 parts of polyether polyol, 30 parts of diphenylmethane diisocyanate, 2 parts of foam stabilizer, 2 parts of chain extender, 1.5 parts of defoamer, flame retardant 3 parts of agent, 5 parts of glass fiber, 0.5 part of crosslinking agent, 5 parts of polyaniline modified bentonite, 15 parts of expandable graphite;

[0048] The preparation of the fire-resistant wear-resistant polyurethane wheel comprises the following steps:

[0049] Step 1: Add polyether polyol and diphenylmethane diisocyanate into the reactor, heat the reactor to 50-70°C through an electric heating mantle, replace the air in the reactor with nitrogen, and then add polyaniline into the reactor Modified bentonite, foam stabilizer, and chain extender, heat up to 80-90°C, stir at 200-300r / min for 25-35 minutes, after stirring, stand still, control the temperature in the reactor at 30-40°C, ke...

Embodiment 3

[0057] A flame-retardant and wear-resistant polyurethane wheel, comprising the following raw materials in parts by weight: 60 parts of polyether polyol, 25 parts of diphenylmethane diisocyanate, 1.5 parts of foam stabilizer, 1.5 parts of chain extender, 1.25 parts of defoamer, flame retardant 2 parts of agent, 4 parts of glass fiber, 0.75 parts of crosslinking agent, 4 parts of polyaniline modified bentonite, 12.5 parts of expandable graphite;

[0058] The preparation of the fire-resistant wear-resistant polyurethane wheel comprises the following steps:

[0059] Step 1: Add polyether polyol and diphenylmethane diisocyanate into the reactor, heat the reactor to 50-70°C through an electric heating mantle, replace the air in the reactor with nitrogen, and then add polyaniline into the reactor Modified bentonite, foam stabilizer, and chain extender, heat up to 80-90°C, stir at 200-300r / min for 25-35 minutes, after stirring, stand still, control the temperature in the reactor at 30...

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Abstract

The invention discloses a flame-retardant wear-resistant polyurethane wheel and a preparation method thereof. The flame-retardant wear-resistant polyurethane wheel comprises the following raw materials in parts by weight: 50 to 70 parts of polyether polyol, 20 to 30 parts of diphenylmethane diisocyanate, 1 to 2 parts of a foam stabilizer, 1 to 2 parts of a chain extender, 1 to 1.5 parts of a defoaming agent, 1 to 3 parts of a flame retardant, 3 to 5 parts of glass fibers, 0.5 to 1 part of a cross-linking agent, 3 to 5 parts of polyaniline modified bentonite and 10 to 15 parts of expandable graphite. Polyether polyol and diphenylmethane diisocyanate are used as polyurethane tire base materials; the glass fibers and the flame retardant are added into a raw material reaction kettle; by addingthe flame-retardant material, the flame-retardant effect of a tire is greatly improved, so that the heat resistance of the tire during friction can be improved, and the flame-retardant wear-resistantpolyurethane tire has the tensile strength of more than or equal to 37 MPa, the elongation at break of more than or equal to 720%, the shore hardness of more than or equal to 1 A and the peel strength of more than or equal to 5 KN*m<-1>.

Description

technical field [0001] The invention belongs to the technical field of polyurethane tires, in particular to a flame-retardant and wear-resistant polyurethane wheel and a preparation method thereof. Background technique [0002] The rapid development of the vehicle industry has become a direct driving force for the improvement of tire structure, and the development of vehicle tires is also one of the necessary conditions for vehicle performance improvement. The wear resistance of the tire tread directly affects the service life of the tire, and the wear resistance It is directly related to the economy of tires. Obviously, wear resistance, rolling resistance and skid resistance, or grip, are the performances that the vehicle industry emphasizes on tire manufacturers at present. With the continuous improvement of vehicle performance and increasingly harsh service conditions of tires, tire manufacturers are required to It can continuously select new materials, change the tire s...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/28C08G18/12C08K13/06C08K9/08C08K3/34C08K3/04C08K7/14B24B5/44B24B41/06B24B41/02B24B47/22
CPCB24B5/44B24B41/02B24B41/06B24B47/22C08G18/12C08G18/2875C08G18/48C08G18/6666C08G18/7671C08K3/04C08K3/346C08K7/14C08K9/08C08K13/06
Inventor 史玉林史春晓
Owner CHUZHOU YULIN POLYURETHANE
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