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Microporous polyether urethane elastomer composite material and preparation method thereof

A technology of polyether polyurethane and microcellular elastomer, which is applied in the field of materials, can solve the problem that the elongation at break does not decrease, the elongation at break will not increase, and the comprehensive mechanical properties of polyurethane microcellular elastomer composite materials are not particularly ideal, etc. problems, to achieve the effect of improving the degree of phase separation, excellent mechanical properties, and strengthening the force

Active Publication Date: 2013-08-28
JIANGSU HUADA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, although the patented method can increase the tensile modulus of the elastomer, it can only maintain the elongation at break without decreasing the elongation at break
Therefore, the comprehensive mechanical properties of the polyurethane microcellular elastomer composite material obtained by the patented method are still not particularly ideal.

Method used

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  • Microporous polyether urethane elastomer composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] This example provides a polyether polyurethane microcellular elastomer composite material, the preparation method of which is as follows:

[0036] (1) Preparation of polyol A component: Add 50kg of polyoxypropylene diol (number average molecular weight 8000) and 0.5kg of nano-graphene into the reaction kettle, stir at 90-110°C for 2 hours, and obtain uniformly dispersed nano-graphite ethylene-polyoxypropylene glycol solution, lower the temperature to 90°C, add polytetrahydrofuran polyol (number-average molecular weight 3000-3500, functionality 2.3-2.8) 30kg, polyether polyol III 20kg, ethylene glycol 3.5kg, 1 , 4-butanediol 7kg, H 2 0.4kg, 0.5kg of silicone oil and 2.5kg of organic amine catalysts are fully stirred and discharged, sealed and preserved for subsequent use;

[0037] (2) Preparation of prepolymer component B: 40kg of MDI, 10kg of liquefied MDI-100LL (purchased from Ningbo Wanhua) and 32.24kg of polyoxypropylene glycol (number average molecular weight 3000)...

Embodiment 2

[0040] This example provides a polyether polyurethane microcellular elastomer composite material, the preparation method of which is as follows:

[0041] (1) Preparation of polyol A component: Add 55kg of polyoxypropylene diol (number average molecular weight 6000) and 1.2kg of nano-graphene into the reaction kettle, stir at 90-110°C for 2 hours, and obtain uniformly dispersed nano-graphite Alkene-polyoxypropylene glycol solution, cooling. Add 15kg polytetrahydrofuran polyol (number-average molecular weight 4000, functionality 2.3-2.8), 30kg polymer polyether polyol III, ethylene glycol 4kg, 1,4-butanediol 8kg, H 2 O0.4kg, HCFC-141b0.8kg, 0.5kg of silicone oil and 3kg of amine catalysts, fully stirred evenly and discharged, sealed and stored for later use;

[0042] (2) Preparation of prepolymer component B: 40kg of MDI, 10kg of liquefied MDI-100LL (purchased from Ningbo Wanhua) and 40.24kg of polyoxypropylene glycol (number average molecular weight 4000) were placed in a reac...

Embodiment 3

[0045] This example provides a polyether polyurethane microcellular elastomer composite material, the preparation method of which is as follows:

[0046] (1) Preparation of polyol A component: Add 60kg of polyoxypropylene diol (number-average molecular weight 4000) and 1.9kg of nano-graphene into the reaction kettle, stir at 90-110°C for 2 hours, and obtain uniformly dispersed nano-graphite Alkene-polyoxypropylene glycol solution, cooling. Add 15kg of polyoxypropylene oxide ethylene copolyether polyol (number-average molecular weight 4000, functionality 2-3), polyether polyol III 25kg, ethylene glycol 1.5kg, 1,4-butanediol 10kg, H 2 O0.4kg, HCFC-141b1.6kg, 0.5kg of silicone oil, 2.8kg of amine catalyst, 0.8kg of organic tin catalyst, fully stirred and evenly discharged, sealed and stored for later use;

[0047] (2) Preparation of component B of the prepolymer: 35kg of MDI, 15kg of liquefied MDI-100LL (purchased from Ningbo Wanhua) and 23.51kg of polyoxypropylene glycol (numbe...

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Abstract

The invention relates to a microporous polyether urethane elastomer composite material and a preparation method thereof. The composite material is formed by the prepolymerization reaction of a polyhydric alcohol component A and a prepolymer component B, wherein the polyhydric alcohol component A comprises the following raw materials in the formula: 20 to 90 parts of polyoxytrimethyl-ene polyhydric alcohol, 5 to 50 parts of polyether polyol II, 5 to 50 parts of polymer polyether polyol, 2 to 30 parts of chain extender, 0.5 to 2 parts of nanometer graphene, 0.2 to 4 parts of foaming agent, 0.2 to 2 parts of foam homogenizing agent and 0.2 to 4 parts of catalyst; and the prepolymer component B comprises the following raw materials in the formula: 30 to 60 parts of diisocyanate, 4 to 20 parts of polyisocyanate modified by carbodiimide and 20 to 60 parts of polyoxytrimethyl-ene polyhydric alcohol. The polyether polyol II is formed by one or two of polyoxytrimethyl-ene epoxyethane copolyether polyol or / and polyethylene tetrahydrofuran polyol. The composite material provided by the invention is excellent in comprehensive mechanical property, antibacterial property and definite flame resistance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a polyether polyurethane microporous elastomer composite material and a preparation method thereof. Background technique [0002] Polyurethane microcellular elastomer has the advantages of simple processing and molding, light weight, good elasticity, wear resistance, folding resistance, and good oil resistance because it combines the excellent properties of rubber and plastics. Its status is becoming more and more important, especially in shoe sole materials, load-bearing tires and automobile cushioning materials, etc., which have a wide range of applications. According to different raw materials, polyurethane microcellular elastomers used for shoe soles and solid core tires can be divided into two types: polyester type and polyether type. Polyester polyurethane microcellular elastomer has good physical and mechanical properties, but its hydrolysis resistance and low tempera...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/63C08G18/48C08G18/32C08G18/10C08J9/14C08G101/00
Inventor 高瑞芳訾少宝蒋大庆王树勇刘少勇
Owner JIANGSU HUADA NEW MATERIAL CO LTD
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