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A kind of halogen-free phosphorus-containing flame-retardant rigid polyurethane foam and its preparation method

A technology of rigid polyurethane and foamed plastics, applied in the field of materials, can solve the problems of being unable to meet high-efficiency flame retardancy, environmental friendliness, etc., and achieve the effects of suppressing the generation of flammable gases, reducing dosage, and improving flame-retardant efficiency

Active Publication Date: 2016-08-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of traditional additive flame retardants can no longer meet the requirements of high efficiency flame retardancy, environmental friendliness, and good compatibility with the matrix.
At the same time, traditional halogen flame retardants have been restricted by increasingly stringent environmental protection and flame retardant laws and regulations, forcing researchers to seek alternatives to halogen flame retardants

Method used

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  • A kind of halogen-free phosphorus-containing flame-retardant rigid polyurethane foam and its preparation method
  • A kind of halogen-free phosphorus-containing flame-retardant rigid polyurethane foam and its preparation method
  • A kind of halogen-free phosphorus-containing flame-retardant rigid polyurethane foam and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 100g polyether polyol 4110, 1.2g tertiary amine catalyst and 0.03g dibutyltin dilaurate, 1.2g silicon-carbon bond smoothing agent, 1.2g2,4,6-tris(dimethylaminomethyl)phenol , 0.2g of water and 0.4g of cyclopentane were mixed evenly under high-speed stirring. Quickly add 120 g of polymethylene polyphenyl isocyanate, stir and mix evenly at room temperature at 2500 r / min. When the mixture is observed to be whitish, it is poured into a self-made mold to foam freely, after foaming, it is aged for 48 hours, and the rigid polyurethane foam is obtained after demoulding. Its oxygen index is 17.0 (GB / T2406.1-2008).

Embodiment 2

[0029] Take by weighing 90g polyether polyol 4110, 10g phosphorus-containing reactive flame retardant of the present invention, 2.2g tertiary amine catalyst and 0.07g dibutyltin dilaurate, 2.2g silicon-carbon bond smoothing agent, 2.2g2,4 , 6-tris(dimethylaminomethyl)phenol, 0.2g water and 0.4g cyclopentane were mixed uniformly under high-speed stirring. Quickly add 120 g of polymethylene polyphenyl isocyanate, stir and mix evenly at room temperature at 2500 r / min. When the mixture is observed to be whitish, it is poured into a self-made mold to foam freely, after foaming, it is aged for 48 hours, and the rigid polyurethane foam is obtained after demoulding. Its oxygen index is 19.0 (GB / T2406.1-2008).

Embodiment 3

[0031] Take by weighing 80g polyether polyol 4110, 20g phosphorus-containing reactive flame retardant of the present invention, 1.5g tertiary amine catalyst and 0.05g dibutyltin dilaurate, 1.5g silicon-carbon bond smoothing agent, 1.5g2,4 , 6-tris(dimethylaminomethyl)phenol, 0.2g water and 0.4g cyclopentane were mixed uniformly under high-speed stirring. Quickly add 120 g of polymethylene polyphenyl isocyanate, stir and mix evenly at room temperature at 2500 r / min. When the mixture is observed to be whitish, it is poured into a self-made mold to foam freely, after foaming, it is aged for 48 hours, and the rigid polyurethane foam is obtained after demoulding. Its oxygen index is 21.0 (GB / T2406.1-2008).

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Abstract

A halogen-free phosphorus-containing flame-retardant rigid polyurethane foam plastic and a preparation method therefor. The halogen-free phosphorus-containing flame-retardant rigid polyurethane foam plastic comprises a phosphorus-containing reactive flame retardant 9,10-dihydro-9-oxa-10-phospha-10-oxidized phenanthryl terephthalyl alcohol, the chemical structural formula thereof being (I). A series of flame-retardant rigid polyurethane foam plastics with different phosphorus contents can be prepared by changing the dosages of a flame retardant and a polyether polyol. The phosphorus-containing foam plastics can generate a phosphorus-rich coke layer with a better heat stability when decomposed, and the phosphorus-rich coke layer can inhibit the continuous combustion of the matrix resin and can also effectively inhibit the generation of a combustible gas.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a halogen-free phosphorus-containing flame-retardant rigid polyurethane foam and a preparation method thereof. Background technique [0002] As a polymer material, polyurethane is widely used in bonding, coating and other industries. However, the lack of flame retardant performance has become one of the bottleneck factors restricting the application of polyurethane. For example, in the field of civil engineering, automobiles, aircraft and other transportation fields, due to harsh service conditions, more stringent requirements are put forward for the flame retardant performance of polyurethane. Polyurethane flame retardant modification mainly focuses on additive flame retardant technology. Chinese patent CN1639245 discloses a flame retardant thermoplastic polyurethane composition containing melamine cyanurate as the only organic flame retardant additive, the TPU co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/32C08G18/48C08G101/00
CPCC08G18/388C08G18/6688C08G2110/0025C08G18/32
Inventor 戴李宗谢聪袁丛辉毛杰刘诚陈国荣许一婷罗伟昂曾碧榕常迎
Owner XIAMEN UNIV