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Polyurethane hard-foam composition and polyurethane hard-foam plastic prepared from same

A technology of polyurethane rigid foam and composition, which is applied in the field of flame retardant plastics, can solve the problems of irregular cell structure and large cell size of polyurethane rigid foam, and achieves small cell size, reduced cell size, and structural the effect of the rule

Active Publication Date: 2014-04-09
北京碧海云智新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a polyurethane rigid foam composition and a polyurethane rigid foam prepared therefrom, so as to solve the problem of irregular polyurethane foam cell structure and large cell size caused by additive flame retardants in the prior art. question

Method used

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  • Polyurethane hard-foam composition and polyurethane hard-foam plastic prepared from same
  • Polyurethane hard-foam composition and polyurethane hard-foam plastic prepared from same
  • Polyurethane hard-foam composition and polyurethane hard-foam plastic prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The polyurethane rigid foam composition is prepared and placed in a GMA-H100 polyurethane high-pressure foaming machine, and the outlet temperature is controlled at 15-20° C. for foaming to form a polyurethane rigid foam. Wherein, the component and proportioning of polyurethane rigid foam composition are as follows:

[0044] components

Embodiment 2

[0046] The polyurethane rigid foam composition is prepared and placed in a GMA-H100 polyurethane high-pressure foaming machine, and the outlet temperature is controlled at 15-20° C. for foaming to form a polyurethane rigid foam. Wherein, the component and proportioning of polyurethane rigid foam composition are as follows:

[0047] components

Embodiment 3

[0049] The polyurethane rigid foam composition is prepared and placed in a GMA-H100 polyurethane high-pressure foaming machine, and the outlet temperature is controlled at 15-20° C. for foaming to form a polyurethane rigid foam. Wherein, the component and proportioning of polyurethane rigid foam composition are as follows:

[0050] components

[0051] DMMP

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Abstract

The invention discloses a polyurethane hard-foam composition and a polyurethane hard-foam plastic prepared from the same. The polyurethane hard-foam composition comprises polyisocyanate, polyether glycol, polyester polyol I, additive flame retardant and foaming agent, wherein the polyester polyol I is flame-retardant polyester polyol. The flame-retardant polyester polyol is added in the polyurethane hard-foam composition, so that the consumption of the additive flame retardant can be reduced; and the plastification action of the additive flame retardant on the polyurethane hard-foam plastic can be reduced, the Van der Waals force among macromolecular chains of polyurethane can be increased, and the relative slippage among the macromolecular chains can be reduced, thereby reducing the sizes of foaming pores formed by the composition. Meanwhile, the Van der Waals force among the macromolecular chains is increased, so that the rigidity of the pore walls of the foaming pores in the polyurethane hard-foam plastic can be increased, thereby ensuring that the foaming pores are more regular in structure and the deformation degree of the foaming pores is weakened. The foaming pores are small in size and stable in structure, and can enhance the compression strength and creep property of the polyurethane hard-foam plastic.

Description

technical field [0001] The invention relates to the field of flame-retardant plastics, in particular to a rigid polyurethane foam composition and a rigid polyurethane foam prepared therefrom. Background technique [0002] Polyurethane rigid foam plastics are widely used in building insulation and transmission pipeline insulation industries because of their excellent mechanical properties, thermal insulation properties and waterproof properties. However, polyurethane rigid foam without flame retardant treatment is flammable, and its combustion oxygen index is less than 19. And polyurethane rigid foam will release harmful gases such as HCN and CO during the combustion process. This makes how to improve the flame retardancy of polyurethane rigid foam plastics has received extensive attention. [0003] At present, the method to improve the flame retardancy of polyurethane rigid foam plastics is mainly to use additive flame retardants in the composition. The most widely used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/50C08G18/48C08G18/42C08K5/5333C08K5/521C08J9/14C08J9/08C08G101/00
CPCC08G18/4018C08G18/4208C08G18/4804C08G18/4883C08G18/5024C08J9/08C08J9/144C08J2203/02C08J2203/142C08J2375/06C08J2375/08C08K5/521C08K5/5333C08G2110/0025
Inventor 任建鹏邸建军李依璇刘小平赖广森李金武
Owner 北京碧海云智新材料技术有限公司
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