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Polyurethane composite material

A composite material, polyurethane technology, applied in the field of polyurethane composite materials, can solve problems such as difficult to handle, toxicity, and uneconomical

Inactive Publication Date: 2017-12-08
COVESTRO POLYMERS CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual distillation process of the crude product of toluene diisocyanate, a large amount of high-boiling point distillation residues will be produced, which are toxic and difficult to handle. Discarding this residue is a serious problem for the TDI industry, which is not only uneconomical, but also will bring security problems

Method used

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  • Polyurethane composite material
  • Polyurethane composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0073] First prepare the mold, and then apply the mixture of the polyurethane reaction system and the rubber granules at a material temperature of 25° C. to the mold. The used isocyanate prepolymer is prepolymer A; the rubber particles are black EPDM rubber particles: the particle size is 1-3mm.

[0074] The above prepolymer A is reacted with the polyurethane reaction system mixed with rubber particles in the mold (about 60°C) to form a composite pad of polyurethane matrix material and rubber particles filled in the polyurethane matrix material, and the cured molded The rubber particle polyurethane composite mat is taken out from the mold to obtain the rubber particle polyurethane composite ballast mat of the present invention. The test mechanical properties are shown in Table 2.

[0075] Table 2: Formula and performance of rubber particle polyurethane composite ballast mat

[0076]

Embodiment 3

[0078] First prepare the mold, and then apply the mixture of the polyurethane reaction system and the rubber granules at a material temperature of 25° C. to the mold. The isocyanate prepolymer used is prepolymer B; the rubber particles are black EPDM rubber particles: particle size 1-3mm.

[0079] React the polyurethane reaction system mixed with rubber particles in the mold to form a composite pad of polyurethane matrix material and rubber particles filled in the polyurethane matrix material, and take out the rubber particle polyurethane composite pad after curing and molding from the mold to obtain rubber particles Polyurethane composite pad. The properties of the prepared rubber particle polyurethane composite pad are shown in Table 3.

[0080] Table 3: Formula and performance of rubber particle polyurethane composite ballast mat

[0081]

[0082] It can be seen from the performance data of Examples 1-3 that the rubber particle polyurethane composite ballast mat provid...

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Abstract

The invention provides a polyurethane composite material. The polyurethane composite material comprises a polyurethane matrix and elastic particles, wherein the elastic particles are coated in the polyurethane matrix, the polyurethane matrix is prepared from a polyurethane resin composition, the polyurethane resin composition comprises isocyanate component A), and the isocyanate component A) comprises an isocyanate prepolymer prepared from TDI residues.

Description

technical field [0001] The invention relates to a polyurethane composite material, comprising a polyurethane matrix and elastic particles, the elastic particles are coated in the polyurethane matrix, the polyurethane matrix is ​​prepared by a polyurethane resin composition, and the polyurethane resin composition includes an isocyanate component A), the isocyanate component A) comprises an isocyanate prepolymer prepared from residues of toluene diisocyanate. The polyurethane composite material provided by the invention has good physical and mechanical properties, and can be used in the fields of low-noise road surfaces, runways, ballast pads, road shoulder stones and the like. Background technique [0002] As the control of noise in countries around the world is becoming more and more stringent, it is usually necessary to set speed bumps and low-noise road surfaces near the exits and toll areas of expressways, as well as urban school areas or low-noise areas. In addition, tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/12C08L23/16C08L75/08
CPCC08G18/7614C08G18/12C08G18/4804C08G18/7607C08L23/16
Inventor 张晨曦
Owner COVESTRO POLYMERS CHINA CO LTD
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