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High performance nano polyurethane micropore elastomer composite material and preparation thereof

A technology of microcellular elastomer and composite material, applied in the field of polyurethane composite materials, can solve the problems of poor mechanical properties of polyether polyurethane microcellular elastomer, and achieve the effects of stable product quality, low production cost, and improved tensile strength

Active Publication Date: 2009-07-22
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-performance nano-polyurethane microcellular elastomer composite material and its preparation method to solve the problem of poor mechanical properties of polyether polyurethane microcellular elastomers at low cost and easy production and application

Method used

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  • High performance nano polyurethane micropore elastomer composite material and preparation thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Component A: 70 kg of polyoxypropylene polyol (weight-average molecular weight 4000, functionality 2, hereinafter referred to as polyether a1), organic montmorillonite modified with dodecyl bishydroxyethyl ammonium salt Add 1.4 kg of soil (hereinafter referred to as OMMT1) and 2.1 kg of organic montmorillonite modified by dioctadecylmethylammonium salt (hereinafter referred to as OMMT2) into the reaction kettle, and stir at a temperature of 140-160°C After 2 hours, when the organic montmorillonite is uniformly dispersed in the polyether a1, the temperature is lowered to 50-60°C. Then add 30 kilograms of polyoxypropylene polyols (the weight-average molecular weight is 6000, and the functionality is 3, hereinafter referred to as polyether a2), 1.67 kilograms of ethylene glycol, 10.2 kilograms of 1,4-butanediol, 0.5 kilograms of silicone oil, water 0.24 kg, 2.4 kg of F-141b, 2.6 kg of catalyst triethylenediamine / ethylene glycol solution (Dabco EG from Air Products, USA, he...

Embodiment 2

[0029] Component A: Add 68 kg of polyether a1 and 1.5 kg of OMMT1 into the reactor, stir for 2 hours at a temperature of 140-160°C, and cool down to 50-60°C after OMMT1 is uniformly dispersed in polyether a1. Then add 14 kilograms of polyether a2, 18 kilograms of polymer polyols (the graft copolymer of propylene oxide ethylene oxide copolyether and acrylonitrile, styrene, weight-average molecular weight is 6000, and functionality is 3, hereinafter referred to as Graft copolymer polyol a3), 1.55 kilograms of ethylene glycol, 9.42 kilograms of 1,4-butanediol, 0.3 kilograms of water, 1.94 kilograms of F-141b, 0.5 kilograms of silicone oil and 2.3 kilograms of catalyst Dabco EG, add in the reactor fully Stir, mix evenly, discharge, seal and store for later use;

[0030] Component B: Put 50 kg of 4,4-diphenylmethane diisocyanate (MDI), 35 kg of carbodiimide-modified MDI and 50 kg of polyether a1 in a reaction kettle at 70-80°C for reaction 2 After 1 hour, the temperature was lower...

Embodiment 3

[0033] Other is the same as embodiment 2, OMMT1 is 0.7 kilograms, and OMMT2 is 1.4 kilograms.

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Abstract

The invention discloses a high-performance nanometer polyurethane microcellular elastomer composite material and a preparation method thereof. Organic montmorillonite is added into polyether glycol I, heated and stirred, thus obtaining stably dispersed colloidal fluid; then polyether glycol II, an alcohols chain-extender, a foaming agent, a foam stabilizer and a catalyst are added, fully and evenly mixed, thus obtaining component A. B component is a performed polymer prepared by the reaction of the polyether glycol I, vulcabond or polyisocyanates at the temperature between 60 and 90 DEG C, with NCO percentage controlled between 17 and 26 percent by weight. The components A and B are mixed at high speed according to the weight mixture ratio that A:B equals to 0.5:1 to 3:1 by using a casting machine and at the temperature of 30-55 DEG C, and injected into a mould for injection moulding, consequently, the high-performance nanometer polyurethane microcellular elastomer composite material is obtained. With low cost, the invention improves a plurality of mechanical properties of a polyether polyurethane microcellular elastomer, such as the tensile strength, modulus and tear strength and the like, and broadens the application field of materials. The composite material can be used as shoe parts, bottom materials, bearing tires or shock absorption buffering materials, and the like. With a bi-component system and a casting moulding technology adopted simultaneously, the invention is simple and can be easily controlled, thus bringing convenience to production promotion.

Description

technical field [0001] The invention belongs to polyurethane composite materials, in particular to a high-performance nano polyurethane microporous elastomer composite material and a preparation method thereof. Background technique [0002] Polyurethane microcellular elastomer refers to the density between 0.25 ~ 0.9g / cm 3 Micro-foamed polyurethane material. It is easy to process, and has many advantages such as light weight, good elasticity, wear resistance, folding resistance, and good oil resistance. It can be used as shoe parts, sole materials, load-bearing tires, and automobile cushioning materials. It plays an important role in national economic life. important role. According to different raw materials, polyurethane microcellular elastomers can be divided into polyester type and polyether type. Polyester polyurethane microcellular elastomer has high mechanical strength and good wear resistance, but poor hydrolysis resistance. The polyether polyurethane microcellul...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K9/04C08G18/66C08G18/12C08G101/00
Inventor 周巧萍李善军袁水华陈本惠
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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