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Prepn of polyether-type polyurethane as shoe sole material

A polyether polyurethane and shoe sole material technology, applied in shoe soles, footwear, clothing and other directions, can solve the problems of weakened tensile strength, complex process, difficult processing, etc., and achieve improved mechanical properties, simple processing technology, and environment-friendly. Effect

Inactive Publication Date: 2005-02-16
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former has better mechanical properties, but its low-temperature performance is poor, and it is easy to hydrolyze (the ester bond in the sole is combined with the moisture in the air to hydrolyze, the relative molecular weight is reduced, and the molecular rearrangement weakens the tensile strength, and the flexural properties become worse, causing cracks in the soles) and biodegradation (polyester polyurethane soles have extremely poor antibacterial properties, and can be degraded by mold in an environment with a certain humidity and cannot be used), difficult processing, and complicated processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Preparation of low unsaturation polyether polyol (I):

[0038]60g of polyoxypropylene triol (molecular weight is 700) starter and double metal cyanide complex catalyst (see the invention patent " double metal cyanide compound catalyst" applied by Kang Maoqing and Wang Xinkui in a 1 liter reactor with stirring) Its preparation method and application, the application number is 00122073.X) 0.0065g (catalyst content 25ppm in the final polyol).The mixture is stirred and heated to 105 ℃, vacuumize nitrogen bubble replacement to remove the trace amount in this initiator Water and oxygen in the reactor. When the reactor is filled with nitrogen to normal pressure, propylene oxide 15 is pre-cast to enter the "induction period" of the catalyst, and the pressure of the reactor is 3.0kg / cm 2 . Then pay attention to observe the pressure of the reactor. Catalyst activation is indicated when there is an accelerated pressure drop in the reactor - the end of the "induction period". ...

Embodiment 2

[0047] 1, low unsaturation polyether polyol (I) preparation, with embodiment 1.

[0048] 2. Preparation of high activity and low unsaturation polyether polyol (III)

[0049] 40g polyoxypropylene triol (molecular weight is 700) initiator and double metal cyanide complex catalyst (see the invention patent " double metal cyanide compound catalyst of Kang Maoqing, Wang Xinkui application) in 1 liter of band stirring reactor Its preparation method and application, the application number is 00122073.X) 0.0110g (catalyst content 25ppm in the final polyol).The mixture is stirred and heated to 110 ℃, vacuumize nitrogen bubble replacement to remove the trace amount in this initiator Water and oxygen in the reactor. When the reactor is filled with nitrogen to normal pressure, propylene oxide 18 is pre-cast to enter the "induction period" of the catalyst, and the pressure of the reactor is 3.2kg / cm 2 . Then pay attention to observe the pressure of the reactor. Catalyst activation is in...

Embodiment 3

[0056] 1, low unsaturation polyether polyol (I) preparation, with embodiment 1.

[0057] 2. Preparation of polyether polyol (II) with high activity and low degree of unsaturation. With embodiment 1.

[0058] 3. Preparation of polyether polyol (III) with high activity and low degree of unsaturation. With embodiment 2.

[0059] 4. Preparation of polyol mixture (component A)

[0060] 80 parts of high activity and low unsaturation polyether polyol (II), 10 parts of high activity and low unsaturation polyether polyol (III), 10 parts of polymer polyether polyol POP9328 (OHV=42-44mgKOH / g, solid content 28-30%, f=3, primary hydroxyl content 70-75%), 11 parts of 1,4-butanediol, 0.4 part of water, 1.8 parts of 33% (weight) triethylenediamine Dipropylene glycol solution, 0.5 parts of organosiloxane-polyether copolymer foam stabilizer (Dabco DC 3042 / 3043) from American Gas Chemical Company are fully mixed in the container for 2.0 hours, and the temperature is kept at 60-65 ° C. After...

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Abstract

the present invention is preparation process of polyether-type polyurethane as shoe sole material. Polyether polyol with high activity and low unsaturation degree is synthesized with water as foaming agent and bimetal cyanide as catalyst; and isocyanate capped modified semi-prepolymer is prepared with small molecule modifier containing active hydrogen. The modified semi-prepolymer and the Polyether polyol are further produced into the porous polyurethane elastomer through mixing, casting, foaming and demolding. The material has high tensile strength, tearing strength, elongation and permanent deformation performance, and rather high low temperature embrtittlement and bending performance, and can meet the requirement as shoe material.

Description

Technical field: [0001] The invention belongs to a preparation method of a polyurethane elastomer, in particular to a preparation technology of a polyether type polyurethane microporous elastomer shoe sole material. Background technique: [0002] As a new multifunctional polymer material, polyurethane is a high-tech, high-performance, and high-value-added product. It occupies an important position in the material industry and has developed into one of the world's six major synthetic materials. In many polyurethane branch fields (foam, elastomer, coating, adhesive, fiber, etc.), microcellular polyurethane elastomer is a new type of material between foam and elastomer, which has good mechanical properties of elastomer and foam. Comfortable, compared with ordinary rubber, it has the mechanical properties of high strength, good toughness, light weight, stable compression stress transmission, excellent oil resistance and fatigue resistance. The most prominent feature is that it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A43B13/04C08G18/48
Inventor 亢茂青殷宁冯月兰赵雨花王军威张清运瞿波王心葵
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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