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Enhanced polyurethane microcellular elastomer composite material and preparation method thereof

A microporous elastomer and composite material technology, which is applied in the synthesis field of polyurethane microporous elastomer, can solve the problems of poor mechanical strength, limited field, poor hydrolysis resistance, etc., and achieve stable product quality, low production cost, and simple and easy process The effect of control

Inactive Publication Date: 2013-12-25
重庆杰博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyester polyurethane microcellular elastomer has high mechanical strength and good wear resistance, but poor hydrolysis resistance
The polyether polyurethane microcellular elastomer has outstanding hydrolysis resistance, excellent low temperature flexibility, and good processing performance, but its mechanical strength is poor, which greatly limits its application fields.

Method used

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  • Enhanced polyurethane microcellular elastomer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Preparation of polyol A component: 60 kg of polymer polyether polyol (graft copolymer of propylene oxide ethylene oxide copolyether, acrylonitrile and styrene, with a weight average molecular weight of 3500 and a functionality of 2. The grafting rate is 23wt.%) into the reaction kettle, heated and stirred at 70-80°C for 60 minutes to obtain a uniformly dispersed and stable colloidal liquid; then add 5 kg of polyether polyol I (polyoxypropylene Polyol, weight average molecular weight 2000, functionality 2) and 5 kg of 1,4-butanediol, 0.2 kg of blowing agent F-141b, 0.2 kg of foam stabilizer silicone oil, 0.2 kg of catalyst Dabco EG , fully stirred and mixed, cooled and sealed for later use;

[0024] 2) Preparation of prepolymer component B: add 0.1 kg of molecular sieve to 30 kg of polyether polyol II (polytetrahydrofuran polyol, weight average molecular weight of 1000, functionality of 2), and then mix with 35 kg of isocyanate (30 Kg of 4,4'-diphenylmethane diisocya...

Embodiment 2

[0027] The difference between Example 2 and Example 1 is that the inorganic nano-filler used in the preparation of the prepolymer B component is 0.5 kg of nano-titanium dioxide.

Embodiment 3

[0029] The difference between Example 3 and Example 1 is that the inorganic nano filler used in the preparation of the prepolymer B component is 2 kg of nano calcium carbonate.

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Abstract

The invention discloses an enhanced polyurethane microcellular elastomer composite material and a preparation method thereof. The material is a reaction product of a polyol A component and a prepolymer B component, wherein the polyol A component is a mixture of 60-95 weight parts of polymer polyether polyol, 5-40 weight parts of polyether polyol I and auxiliaries; the prepolymer B component is a prepolymer prepared through the reaction of 35-70 weight parts of isocyanate and 30-50 weight parts of polyether polyol II; 0.1-7.5 weight parts of inorganic nanometer filler is added in the polyether polyol II; the NCO content of the prepolymer is 17-30wt.%. The preparation method the material is casting moulding process. The preparation method disclosed by the invention has the advantages that the material cost is reduced while the mechanical property of polyether polyurethane microcellular elastomers is increased at the same time; the application area of the material is greatly broadened. The material disclosed by the invention can be used for shoe parts, shoe sole materials, load-bearing tyres, automotive shock-absorbing buffering materials, bridge buffering shock-absorbing materials and the like.

Description

technical field [0001] The invention relates to the technical field of synthesis of polyurethane microcellular elastomers, in particular to a reinforced polyurethane microcellular elastomer composite material and a preparation method thereof. Background technique [0002] Polyurethane microcellular elastomer refers to micro-foamed polyurethane materials with a density between 0.25 and 0.9g / cm3. It is easy to process and has many advantages such as light weight, good elasticity, wear resistance, folding resistance, and good oil resistance. Used as shoe parts, sole materials, load-bearing tires and automobile cushioning materials, it plays an important role in national economic life. 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 micr...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K3/22C08K3/36C08K3/26C08K3/34C08K7/06C08K7/00C08K9/04C08G18/66C08G18/63C08G18/48C08G18/10C08J9/14C08J9/10
Inventor 不公告发明人
Owner 重庆杰博科技有限公司
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