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Nano modified urethane elastomer tyre material for tracked vehicle road wheel and moulding technique thereof

A polyurethane elastic and nano-modified technology, used in special tires, vehicle parts, tire parts and other directions, can solve the problems of low service life, poor elasticity, poor aging resistance, etc., achieve a wide range of hardness, improve heat aging resistance, etc. and hydrolysis resistance, good abrasion resistance

Active Publication Date: 2009-04-01
中国化工集团曙光橡胶工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main material of the domestic tracked vehicle load-bearing tire body is natural rubber, and the hardness of the external rubber carcass can only reach about 90 degrees Shore, and the elasticity is poor, the aging resistance is poor, and the service life is low, generally only reaching 4,000 degrees. kilometer

Method used

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Embodiment Construction

[0019] The present invention can be further understood through the specific examples of the present invention given below, but the present invention is not limited thereto.

[0020] Weigh 250Kg of polytetrahydrofuran diol, 750Kg of p-phthalene dihydrofuran diol, 40Kg of surface-modified inorganic nano-powder silicon dioxide or titanium dioxide, 30Kg of epoxy resin / phenolic resin, and 50Kg of methylene bis-o-chloroaniline , the organic surface modified inorganic nano-powder material silicon dioxide or titanium dioxide is dispersed in polytetrahydrofuran diol, and epoxy resin / phenolic resin is added at the same time, fully stirred and mixed, and the polytetrahydrofuran of pre-dispersed nano-powder and resin Nano-modified prepolymers were synthesized by reacting dihydric alcohols and diisocyanates in a vacuum reaction axe. The reaction temperature is 90-100°C, and the reaction time is 45 minutes. Finally, methylene bis-o-chloroaniline is added to the prepolymer, and after heating...

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PUM

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Abstract

The invention discloses a nanometer modified PU Elastomers tyre carcass material for the loading wheel of a caterpillar and is characterized in that a nanometer modified prepolymer is made from polytetrahydrofuran dihydric alcohol, PPDI, surface modified inorganic nano-powder silicon dioxide or titanium oxide and epoxide resin / phenolic resin and is then thermally cross-linked with methylene di-ortho-chloro aniline to form the nanometer modified PU Elastomers tyre carcass material. A finished loading wheel can be formed by pouring the tyre carcass material on a metallic wheel body. The invention has the advantages of reducing the internal dynamic heat generation of PU Elastomers by modification, improving the heat-proof aging and anti-hydrolysis performances of the tyre carcass of the loading wheel, giving full play to excellent performances such as high strength, good wear resistance, wide hardness range and the like, and endowing the loading wheel with superior property.

Description

Technical field: [0001] The invention relates to a carcass material of a road wheel of a crawler vehicle, in particular to a carcass material and a pouring process of a nano-modified polyurethane elastic body of a road wheel of a crawler vehicle. Background technique: [0002] The tracked vehicle road wheel is covered with a certain thickness of rubber on the metal wheel body, which plays the role of bearing, supporting, transmission, buffering, etc., and is an important part of the tracked vehicle. Tracked vehicle road wheels are used under harsh conditions, requiring high loads, cyclical stress and strain, and complex operating environments. The performance of road wheels directly affects the mobility, speed and durability of tracked vehicles. The external rubber carcass of the tracked vehicle road wheel must have excellent resistance to high temperature, low temperature, weather aging, ozone aging, flex fatigue resistance and excellent adhesion between the metal wheel bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K5/17C08G18/10B60C1/00C08K3/36C08L63/00C08L61/06
Inventor 王玉峰盛保信
Owner 中国化工集团曙光橡胶工业研究设计院有限公司
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