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Organic polymer polyurethane elastomer and preparation method thereof

A technology of polyurethane elastomer and organic polymer, which is applied in the field of organic polymer polyurethane elastomer and its preparation, can solve problems such as falling blocks and degumming, achieve good impact absorption and damping, excellent oil resistance, eliminate noise and The effect of vibration

Inactive Publication Date: 2011-08-24
上海科华聚氨酯制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the dynamic working state of the polyurethane idler roller, a large shear force will be generated between the polyurethane elastomer and the roller core, and the polyurethane layer of the idler roller will sometimes have "degumming" and "blocking".

Method used

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  • Organic polymer polyurethane elastomer and preparation method thereof
  • Organic polymer polyurethane elastomer and preparation method thereof
  • Organic polymer polyurethane elastomer and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0022] The preparation method of the organic polymer polyurethane elastomer of the present invention comprises the following steps: 1) adding 40% to 65% of the oligomer polyol into a reaction kettle equipped with a thermometer, a stirrer, a cooling device and a nitrogen inlet, at 110 Dehydration and vacuuming at ~140°C for 1 hour, then cooling down to 65~75°C, adding 20%~38% toluene diisocyanic acid, stirring and reacting at 75±5°C for 1.5~2 hours, then vacuum degassing to obtain isocyanate pre Polymer; Wherein said oligomer polyol is optional in adipic acid polyester diol, polyoxypropylene diol;

[0023] 2) Add 6% to 13% of 3,3'-dichloro-4,4'-diphenylmethanediamine and 8% to 12% of compounding agent to the isocyanate prepolymer obtained in step 1, mix and stir evenly 1 to 2 minutes, vacuuming for 2 to 3 minutes to obtain a polyurethane polymer material; the compounding agent is a flame retardant or an antistatic agent or a combination of the two; the flame retardant is an add...

Embodiment 1

[0028] In this example, the organic polymer polyurethane elastomer consists of 53% adipic acid polyester diol, 24% toluene diisocyanate, 11% 3,3'-dichloro-4,4'-diphenylmethanediamine, tetra (2-Chloroethyl)-2.2-bis(chloromethyl)-1,3-propylene diphosphate 8%, quaternary ammonium salt cation and nonionic composite surfactant 4%.

[0029] Preparation steps: 1) Add 53% adipic acid polyester diol into a reaction kettle equipped with a thermometer, agitator, cooling device and nitrogen inlet, dehydrate and vacuumize at 110°C for 1 hour, then cool down to 65°C , adding 24% toluene diisocyanic acid and stirring at 75±5°C for 1.5h, then vacuum defoaming to obtain isocyanate prepolymer;

[0030] 2) Add 11% of 3,3'-dichloro-4,4'-diphenylmethanediamine and 8% of tetrakis(2-chloroethyl)-2.2-bis to the isocyanate prepolymer obtained in step 1 (Chloromethyl)-1,3-propylene diphosphate, 4% quaternary ammonium salt cationic and nonionic composite surfactant, mixed and stirred evenly for 1.5 min...

Embodiment 2

[0034] In this example, the organic polymer polyurethane elastomer is composed of 60% of adipic acid polyester diol, 26% of toluene diisocyanate, 6% of 3,3'-dichloro-4,4'-diphenylmethanediamine, 6% of tetra (2-Chloroethyl)-2.2-bis(chloromethyl)-1,3-propylene diphosphate 8%.

[0035] Preparation steps: 1) Add 60% adipic acid polyester diol into a reaction kettle equipped with a thermometer, agitator, cooling device and nitrogen inlet, dehydrate and vacuumize at 130°C for 1 hour, then cool down to 70°C , adding 26% of toluene diisocyanic acid, stirring and reacting at 75±5°C for 2 hours, and then vacuum degassing to obtain isocyanate prepolymer;

[0036]2) Add 6% of 3,3'-dichloro-4,4'-diphenylmethanediamine and 8% of tetrakis(2-chloroethyl)-2.2-diamine to the isocyanate prepolymer obtained in step 1 (Chloromethyl)-1,3-propylene diphosphate, mix and stir evenly for 1 minute, and vacuumize for 2 minutes to obtain polyurethane polymer materials;

[0037] 3) Pour the polyurethane ...

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Abstract

The invention relates to an organic polymer polyurethane elastomer and a preparation method thereof. The organic polymer polyurethane elastomer mainly comprises the following components in percentage by weight: 40-65% of low-polymer polybasic alcohol, 20-38% of toluene diisocyanate, 6-13% of 3,3'-dichloro-4,4'-diphenylmethane diamine and 8-12% of compounding ingredient. The low-polymer polybasic alcohol is one of adipic polyesterglycol and polyoxypropylene diol; and the accessory ingredient is a flame retardant, or an antistatic agent or the combination thereof. The organic polymer polyurethane elastomer has the advantages of high wear resistance and wide hardness range, the Shore hardness of the organic polymer polyurethane elastomer is A10-D80, and the organic polymer polyurethane elastomer with high hardness stills has a percentage of elongation of 400-800%, which is 2-3 times of natural rubber and synthetic rubber; and the organic polymer polyurethane elastomer also has the advantages of high load bearing capacity, favorable shock resistance and damping capacity, and excellent oil resistance, can not be easily damaged by throwing or knocking, and can effectively eliminate noise and vibration.

Description

technical field [0001] The invention relates to an organic polymer polyurethane elastomer and a preparation method thereof. Background technique [0002] As a kind of conveying equipment, belt conveyor is widely used in industries such as mines, ports, thermal power plants and building materials, and is one of the most widely used conveying equipment. Belt conveyors are widely used in industrial and mining enterprises, and idlers are an important part of belt conveyors. The role of the idler is to support the conveyor belt and the weight of the material. Therefore, the operation of the idler must be flexible and reliable, and reducing the friction between the conveyor belt and the idler and the accessories of the idler plays a key role in the life of the conveyor belt. It has many types and a large quantity, accounting for 35% of the total cost of a belt conveyor, and bears more than 70% of the resistance. The quality of the idler roller directly affects the normal operati...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/32C08L75/06C08L75/08C08K5/521B29C35/02
Inventor 张居华
Owner 上海科华聚氨酯制品有限公司
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