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Polyurethane microporous elastomer with characteristics of rubber and preparation method thereof

A microporous elastomer, polyurethane technology, used in applications, shoe soles, clothing, etc., can solve the problems of poor low temperature resistance, hydrolysis resistance, low temperature electrical insulation, hydrolysis resistance, and oil resistance that cannot be compared with rubber. , to achieve the effect of low production cost, simple and easy-to-control process, and stable product quality

Active Publication Date: 2011-07-06
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with traditional shoe sole materials such as rubber, a disadvantage of polyurethane microcellular elastomers is that they are poor in hydrolysis resistance, low temperature resistance, oil resistance, chemical resistance, and electrical insulation.
When traditional polyurethane raw materials are used to produce shoe soles, the hydrolysis resistance and oil resistance cannot be compared with rubber at all; for example, in the environment of minus 40 ℃, polyurethane soles will break, and the low temperature resistance of rubber soles is inferior to a series of problems.

Method used

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  • Polyurethane microporous elastomer with characteristics of rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Prepare A component, weigh respectively: 66.67 kilograms of polyester polyol A1, 33.33 kilograms of polyester polyol A2, 3 kilograms of chain extender ethylene glycol, foam stabilizer DC193 (the U.S., produced by Air Products Company, commercially available) 0.4 kg, 0.4 kg of water and 1.3 kg of catalyst triethylenediamine. Put the weighed raw materials in a reaction kettle at 20-50°C, mix them well for 2-4 hours, discharge them, and keep them sealed.

[0041] Prepare component B, weighing: 56.55 kg of diphenylmethane diisocyanate, 2.85 kg of carbodiimide modified polyisocyanate, 24.45 kg of polyester polyol B1, 3.64 kg of polyester polyol B2, 12.47 kg of polyester polyol B3 kg, 2.50 grams of side reaction inhibitor phosphoric acid. Put the weighed raw materials in the reaction kettle, react at 60-80°C for 2-3 hours, remove air bubbles in a vacuum, lower the temperature to 40-45°C, control the free-NCO content to 17-19% by weight, and discharge , sealed and preserved;...

Embodiment 2

[0044] Prepare component A, weigh respectively: polyester polyol A1 60 kg, polyester polyol A2 30 kg, butylated hydroxyl polyol A3 10 kg, chain extender ethylene glycol 3 kg, foam stabilizer DC193 (U.S., air Product company production, commercially available) 0.4 kilograms, water 0.4 kilograms and catalyst triethylenediamine 1.3 kilograms. Put the weighed raw materials in a reaction kettle at 20-50°C, mix them well for 2-4 hours, discharge them, and keep them sealed.

[0045] B component is the same as example 1

Embodiment 3

[0047] Prepare A component, weigh respectively: 46.67 kilograms of polyester polyol A1, 23.33 kilograms of polyester polyol A2, 30 kilograms of butylated hydroxyl polyol A3, 3 kilograms of chain extender ethylene glycol, foam stabilizer DC193 (U.S., air Product company production, commercially available) 0.4 kilograms, water 0.4 kilograms and catalyst triethylenediamine 1.3 kilograms. Put the weighed raw materials in a reaction kettle at 20-50°C, mix them well for 2-4 hours, discharge them, and keep them sealed.

[0048] B component is the same as example 1

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Abstract

The invention discloses a polyurethane microporous elastomer with characteristics of rubber and a preparation method thereof. The preparation method comprises the following steps: heating and mixing polyester polyol A1, polyester polyol A2, polyester polyol A3, a chain extender, tertiary amine or organic metal catalyst, an organosilicon foam stabilizer and a foaming agent in a reaction kettle to obtain a component A; mixing diisocyanate, polyester polyol B1, polyester polyol B2, polyester polyol B3 and a side reaction inhibitor in a reaction kettle to react, thereby obtaining a component B; and thoroughly mixing the components A and B, and reacting to obtain the polyurethane microporous elastomer. The polyurethane microporous elastomer with characteristics of rubber is suitable to be used as a sole material, and has the advantages of excellent processability, mechanical properties, hydrolysis resistance and low-temperature resistance. The prepared sole is light and comfortable; and meanwhile, a double-component system and a cast molding technique which are used are simple and easy to control, thereby enhancing the competitive power of the traditional sole materials, such as polyurethane microporous elastomer materials, rubber and the like.

Description

technical field [0001] The invention belongs to the field of polymer material manufacture, and in particular relates to a polyurethane microporous elastomer with rubber characteristics for making shoe soles and a preparation method. Background technique [0002] Polyurethane is a new type of polymer material with excellent performance. It has the dual advantages of plastic and rubber. It is the fifth largest plastic after polyethylene, polyvinyl chloride, polypropylene and polystyrene. It is widely used in synthetic fibers and shoemaking. Industry, automobile industry, building materials and other fields, polyurethane elastomers entered the field of shoe sole materials in the late 1960s, and began to impact the market of traditional rubber and plastic shoe sole materials. In the 1970s, Germany developed polyurethane two-component liquid reaction molding technology (RIM technology), which made the processing and molding of polyurethane soles easy, and the polyurethane industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/14C08G18/78C08G18/72C08G18/69C08G18/66C08G18/44C08G18/42C08G18/12A43B13/04C08G101/00
Inventor 赵叶宝温文宪段伟东刘旭薛晓金帅丰平
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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