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Polyurethane elastomer composite material and preparation method thereof

A technology of polyurethane elastomer and composite material, applied in the field of polyurethane elastomer, can solve problems such as failure to maintain hardness and mechanical properties, dust pollution hazards, etc., to reduce environmental pollution and operator injury, improve wear resistance, friction coefficient reduced effect

Pending Publication Date: 2022-07-29
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, this modified high wear-resistant polyurethane elastomer will use nano-scale inorganic raw materials such as meteorological silica in the preparation process, which will cause dust pollution hazards, and after adding fillers, the hardness and hardness of the original material cannot be maintained. mechanical properties

Method used

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  • Polyurethane elastomer composite material and preparation method thereof
  • Polyurethane elastomer composite material and preparation method thereof
  • Polyurethane elastomer composite material and preparation method thereof

Examples

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preparation example Construction

[0059] The invention provides a preparation method of a polyurethane elastomer composite material, comprising the following steps:

[0060] 1) Disperse and mix the polyol and the graphite derivative to obtain a graphite-doped polyol, and then in a protective atmosphere, perform a prepolymerization reaction of the graphite-doped polyol obtained in the above steps and a diisocyanate to obtain a graphite-doped polyol. prepolymer;

[0061] After the antimony compound and the above-mentioned prepolymer are blended and stirred uniformly, fibers are added and stirred uniformly to obtain a composite prepolymer;

[0062] 2) under stirring conditions, adding chain extender and crosslinking agent to the above-mentioned composite prepolymer, and after stirring and mixing, a mixture is obtained;

[0063] 3) Pour the mixture obtained in the above steps into a mold, and polymerize and solidify to obtain a polyurethane elastomer composite material.

[0064] In the present invention, the pol...

Embodiment 1

[0106] Disperse and mix 100g PCL-1000 and 10g graphite to obtain a graphite-doped polyol, and then in a protective atmosphere, the graphite-doped polyol obtained in the above steps and 45g TDI at 60 ° C, after 2h, after a prepolymerization reaction, to obtain a prepolymer doped with graphite;

[0107] After 10g of antimony trioxide and the above-mentioned prepolymer are blended and stirred uniformly, 10g of glass fiber is added and stirred at a high speed to obtain a composite prepolymer;

[0108] Under the condition of high-speed stirring, quickly add 40g MOCA and 10g glycerol to the above composite prepolymer, and stir and mix at high speed;

[0109] The mixture obtained in the above steps was poured into a 120° C. 2 mm mold, cured and formed by polymerization reaction, and vulcanized at 100° C. for 16 hours to obtain a polyurethane elastomer composite material. The performance was tested after 7 days at room temperature.

Embodiment 2

[0111] Disperse and mix 100g PCL-2000 and 7g graphene to obtain a graphite-doped polyol, and then in a protective atmosphere, the graphite-doped polyol obtained in the above steps and 43.6g MDI are prepolymerized at 70 ° C for 5 h. Then, a prepolymer doped with graphene is obtained;

[0112] After 16g of antimony trioxide and the above-mentioned prepolymer are mixed and stirred uniformly, 20g of carbon fiber is added and stirred at a high speed to obtain a composite prepolymer;

[0113] Under the condition of high-speed stirring, 32g E-300 and 3g carbodiimide are rapidly added to the above composite prepolymer, and the mixture is stirred and mixed at high speed;

[0114] The mixture obtained in the above steps was poured into a 130° C. 2 mm mold, cured and formed by polymerization reaction, and vulcanized at 105° C. for 16 hours to obtain a polyurethane elastomer composite material. The performance was tested after 7 days at room temperature.

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Abstract

The invention provides a polyurethane elastomer material and a preparation method thereof. The material is prepared from the following raw materials in parts by mass: 100 parts by weight of polyhydric alcohol, 10 to 70 parts by weight of diisocyanate, 0 to 50 parts by weight of chain extender, 0 to 25 parts by weight of cross-linking agent, 10 to 20 parts by weight of antimony compound, 0 to 25 parts by weight of graphite derivative and 0 to 35 parts by weight of fiber, and is a polyurethane elastomer material with specific composition and structure. The specific antimony compound, the graphite and the fiber are matched for use, so that the frictional wear performance of the polyurethane elastomer material is remarkably improved. According to the high-wear-resistance polyurethane elastomer prepared by the technology, the wear resistance of the polyurethane elastomer is further improved while the mechanical properties of high hardness, high elasticity and the like are maintained. The technology is simple in preparation process and environmentally friendly, and the material can be widely applied to manufacturing and production of bearing liners, shock pads, sealing pieces and the like.

Description

[0001] This application claims to be submitted to the China Patent Office on February 24, 2022, the application number is 202210176683.0, and the title of the invention is "a high wear-resistant polyurethane elastomer product and its preparation method" The priority of the Chinese patent application, the entire content of which is passed Reference is incorporated in the present application. technical field [0002] The invention belongs to the technical field of polyurethane elastomers, and relates to a polyurethane elastomer composite material and a preparation method thereof, in particular to a high wear-resistant polyurethane elastomer composite material and a preparation method thereof. Background technique [0003] Polyurethane is an important functional polymer material with a wide range of applications. The long polymer chain of polyurethane is basically linear, and a partial cross-linked structure is formed by a chain extender and a cross-linking agent. The urethane...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/44C08G18/42C08G18/32C08K3/04C08K3/22C08K7/00C08K7/06C08K7/12C08K7/14C08L67/00
CPCC08G18/6637C08G18/4277C08G18/10C08G18/6651C08G18/44C08G18/4854C08G18/6685C08G18/6681C08G18/4825C08K7/14C08K3/04C08K3/042C08K3/2279C08K7/06C08K7/12C08K7/00C08K3/041C08L67/00C08G18/3243C08G18/3206C08G18/3868
Inventor 王世伟徐铁宁孙中梁李伟战思琪丁文贺
Owner CHANGCHUN UNIV OF TECH
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