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Polyurethane elastomer and product and preparation method thereof

A technology of polyurethane elastomer and polyurethane elasticity, which is applied in the field of polyurethane preparation and application, can solve the problems that the strength and wear resistance of polyurethane elastomer cannot be guaranteed, and achieve the effects of good fire resistance, good controllability and long service life

Inactive Publication Date: 2017-06-13
苏州高夫高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention obtains an environmentally friendly polyurethane elastomer with good flame retardancy by adding a halogen-free flame retardant, but it cannot guarantee that the polyurethane elastomer provided has good strength and wear resistance

Method used

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  • Polyurethane elastomer and product and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] A polyurethane elastomer consisting of the following raw materials: polypropylene oxide polyol with a number average molecular weight of 3000, diphenylmethane diisocyanate, triethylenediamine, 1,4-butanediol and triphenylphosphite , the specific preparation process steps are:

[0033] S1: Synthesis of prepolymer: Put polypropylene oxide polyol and diphenylmethane diisocyanate into the reactor according to the weight ratio of 1:0.25, mix and stir, control the reaction temperature at 80-110°C, and add triethylenediamine , wherein the weight of triethylenediamine is 0.02% of the polypropylene oxide polyol, and the reaction generates a low-molecular-weight prepolymer terminated by isocyanate group;

[0034] S2: Final reaction: Mix 1,4-butanediol and triphenyl phosphite at a ratio of 1:4, and then add the mixture to the reactor to make the mixture and the isocyanate group-terminated low-molecular prepolymer at 90-120 The reaction is continued in an environment of ℃, and the...

Embodiment 2

[0039] A polyurethane elastomer consisting of the following raw materials: polyethylene oxide propylene oxide polyol with a number average molecular weight of 5000, dimethyl toluene diisocyanate, triethylene diamine, 1,4-butanediol and halogen-containing Phosphite flame retardant, the halogen-containing phosphite flame retardant is trichlorophenyl phosphite, and the specific preparation process steps are:

[0040] S1: Synthesis of prepolymer: Put polyethylene oxide propylene oxide polyol and dimethyltoluene diisocyanate into the reactor according to the weight ratio of 1:0.23, mix and stir, control the reaction temperature at 80-110°C, and add Sanya Ethylenediamine, wherein the weight of triethylenediamine is 0.02% of the polypropylene oxide polyol, reacts to generate a prepolymer terminated with a hydroxate group;

[0041] S2: Final reaction: Mix 1,4-butanediol and trichlorophenyl phosphite according to the ratio of 0.18:1, and then add the mixture to the reactor to make the ...

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Abstract

The invention belongs to the technical fields of preparation and application of polyurethane, and provides a polyurethane elastomer and a product and a preparation method thereof. The polyurethane elastomer comprises the following raw materials: polyether polyol, diisocyanate, a catalyst, a low molecular diol chain extender and a flame retardant, wherein the weight ratio of the polyether polyol to the diisocyanate is 1 to (0.3-1.0), the amount of the catalyst is 0.01-0.1% of the weight of the polyether polyol, the amount of the low molecular diol is 0.5-2.0% of the weight of the polyether polyol, and the amount of the flame retardant is 5-10% of the weight of the polyether polyol. The polyurethane elastomer provided by the invention not only has good abrasive resistance and rebound resilience, but also has good fire protecting performance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane preparation and application, and in particular relates to a polyurethane elastomer, its products and a preparation method. Background technique [0002] Polyurethane elastic shock absorber is a polymer material between rubber and plastic. There are various raw materials and formulas for making polyurethane elastic shock absorbing pads, and they are often made into shock absorbing pads for use in various fields. It is usually required that fireproof polyurethane elastomers used in the field of transportation and construction have appropriate hardness, good wear resistance and high resilience; usually the external conditions encountered by polyurethane elastomers during use are dynamic, that is, polyurethane elasticity improves It needs to bear the effect of external force, so the material is required to have low internal heat generation, so as to reduce the gap and damage inside the material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/10C08K5/526C08K5/3492
CPCC08G18/48C08G18/10C08G18/4837C08K5/34922C08K5/526C08G18/3206
Inventor 潘开飞李相哲
Owner 苏州高夫高分子材料有限公司