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A kind of polyurethane material, its preparation method and its application

A polyurethane material, polyurethane technology, applied in roads, pavements, buildings, etc., can solve problems such as poor wear resistance and low strength of the bottom layer of the runway

Active Publication Date: 2019-10-15
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bottom layer of polyether polyurethane runway has low strength and poor wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Preparation of polyurethane pellets:

[0065] Take 100 parts of carbon dioxide copolymer polyol, add it into the reaction kettle, heat to 60°C, stir at 500r / min, add 40 parts of diphenylmethane diisocyanate, 0.1 part of stannous octoate, gradually raise the temperature to 85°C and react for 2 hours , to obtain pellet prepolymer;

[0066] Take 100 parts of the pellet prepolymer and cool it down to 60°C, then add 8 parts of the dehydrated chain extender 1,4-butanediol into the reaction kettle, stir at high speed for 5 minutes, and quickly pour it into the preheated mold , cured in an oven at 80°C for 12h, then aged at 100°C for 12h, and placed at room temperature for 24h, then crushed, adding 20 parts of active calcium carbonate to the extruder to make new environmentally friendly polyurethane pellets.

[0067] Environmentally friendly polyurethane adhesive:

[0068] Take 100 parts of carbon dioxide copolymer polyol, add it to the reaction kettle, heat to 55°C, stir at ...

Embodiment 2

[0075] Preparation of polyurethane pellets:

[0076] Take 100 parts of carbon dioxide copolymer polyol, add it to the reaction kettle, heat to 60°C, stir at 500r / min, add 50 parts of diphenylmethane diisocyanate, 0.1 part of stannous octoate, gradually raise the temperature to 85°C and react for 2.5 hours , to obtain pellet prepolymer;

[0077]Take 100 parts of the pellet prepolymer and cool it down to 60°C, then add 8 parts of the dehydrated chain extender 1,4-butanediol into the reaction kettle, stir at high speed for 5 minutes, and quickly pour it into the preheated mold , cured in an oven at 80°C for 12h, then aged at 100°C for 12h, and placed at room temperature for 24h, then crushed, adding 20 parts of active calcium carbonate to the extruder to make new environmentally friendly polyurethane pellets.

[0078] Preparation of polyurethane adhesive:

[0079] Take 100 parts of carbon dioxide copolymer polyol, add it to the reaction kettle, heat to 55°C, stir at 500r / min, a...

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PUM

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Abstract

The invention provides a polyurethane material and a preparation method and application thereof. The polyurethane material comprises the following ingredients in parts by weight: 100 parts of polyurethane granules and 10-25 parts of polyurethane adhesive, wherein the polyurethane granules are prepared from the following ingredients: 100 parts of carbon dioxide copolymer polyalcohol, 20-50 parts of diisocyanate, 0.1-10 parts of chain extending cross-linker and 0.01-1 part of organo-metallic catalyst; the polyurethane adhesive is prepared from the following ingredients: 100 parts of carbon dioxide copolymer polyalcohol, 10-40 parts of diisocyanate and 0.01-0.4 part of organo-metallic catalyst. The polyurethane material provided by the invention comprises the polyurethane granules which comprise the carbon dioxide copolymer polyalcohol, and a prepared polyurethane track base coat has excellent wear resistance, adhesion property and excellent tensile strength under the synergistic action of the carbon dioxide copolymer polyalcohol and the other ingredients.

Description

technical field [0001] The invention relates to the technical field of floor covering materials, in particular to a polyurethane material, its preparation method and its application. Background technique [0002] Track and field tracks, basketball courts, volleyball courts, badminton courts, and tennis courts in modern sports fields, as well as kindergartens, hospitals, and primary and secondary schools, all have requirements for paving materials that are flexible, safe, non-slip, and wear-resistant. Traditional flooring materials are mostly made of polyurethane, polyvinyl chloride, neoprene, etc. These materials have excellent properties, especially excellent cushioning properties, and have been widely used. [0003] However, the traditional materials widely used above also have some disadvantages. For example, polyvinyl chloride itself has poor thermal stability, and its performance gradually decreases during use. At the same time, it will slowly decompose and release harm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08G18/66C08G18/44C08G18/10C08G18/32E01C13/06
Inventor 丁鹄岚刘保华冼文琪程梦萍
Owner GUANGDONG UNIV OF TECH