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Intrinsic flame-retardant rigid polyurethane foam plastic

A technology of rigid polyurethane and foam plastics, applied in the field of foam plastics, can solve the problems of large addition amount, poor resin compatibility, blooming, etc., achieve the effects of reducing addition amount, overcoming poor compatibility, and improving flame retardant performance

Inactive Publication Date: 2014-06-18
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of additive flame retardant methods will also bring some unavoidable problems: (1) In order to achieve the flame retardant effect, the addition amount is relatively large; (2) The compatibility with the polyurethane matrix resin is poor, and the additive will be damaged during long-term storage or use. Migrates to the surface of the material, causing a rubber-like "blooming" phenomenon

Method used

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  • Intrinsic flame-retardant rigid polyurethane foam plastic
  • Intrinsic flame-retardant rigid polyurethane foam plastic
  • Intrinsic flame-retardant rigid polyurethane foam plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is a comparative example without adding reactive phosphorus-containing flame retardant

[0038] Weigh 105g of sucrose polyether polyol, 3.5g of triethylenediamine, 2.5g of silicon-carbon bond type foam stabilizer, 2.5g of 2,4,6-tris(dimethylaminomethyl)phenol and 1.5g of water, and use high-speed Mix well under stirring to form material A, quickly add material B (150g PM-100 and 0.1g dibutyltin dilaurate), stir at room temperature at 2500r / min at high speed and mix well. 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

[0040] Weigh 90g of sucrose polyether polyol, 10g of DOPO-HB, 2.5g of triethylenediamine, 0.8g of silicon-carbon bond foam stabilizer, 0.8g of 2,4,6-tris(dimethylaminomethyl)phenol and 0.5 g of water, mix evenly under high-speed stirring to form material A, quickly add material B (135g PM-100 and 0.05g dibutyltin dilaurate), stir and mix evenly at room temperature at 2500r / min at high speed. 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 18.0 (GB / T2406.1-2008).

Embodiment 3

[0042] Weigh 80g of sucrose polyether polyol, 20g of DOPO-HB, 3.0g of triethylenediamine, 1.7g of silicon-carbon bond type foam stabilizer, 1.7g of 2,4,6-tris(dimethylaminomethyl)phenol and 1.0 g of water, mix evenly under high-speed stirring to form material A, quickly add material B (142g PM-100 and 0.08g dibutyltin dilaurate), and mix well under high-speed stirring at room temperature 2500r / 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 19.5 (GB / T2406.1-2008).

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Abstract

The invention discloses an intrinsic flame-retardant rigid polyurethane foam plastic which comprises the following components in parts by weight: 100-105 parts of polyether polyol and reaction type phosphorus-containing flame retardant, 2.5-3.5 parts of amine catalyst, 0.8-2.5 parts of tertiary amine catalyst, 0.8-2.5 parts of foam stabilizer, 0.5-1.5 parts of foaming agent, 135-150 parts of isocyanate and 0.05-0.1 part of organo-metallic catalyst, wherein the reaction type phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxy benzyl alcohol. According to the foam plastic disclosed by the invention, the frost jet phenomenon similar to rubber is avoided, flame-retardant element active monomers are introduced into a main chain and a side chain of polyurethane to modify polyurethane, so that the flame retardancy of the polyurethane is permanently improved under the condition that the performance of matrix resin is not remarkably influenced.

Description

technical field [0001] The invention belongs to the technical field of foam plastics, and in particular relates to an intrinsically flame-retardant rigid polyurethane foam plastic. Background technique [0002] Polyurethane (PU), as one of the six most important synthetic materials, is widely used in building energy saving, home appliances, transportation (automobiles, subways, high-speed rails, etc.), new energy and other industries. In recent years, a series of fire accidents have occurred in my country, which puts the flame retardant research of polyurethane rigid foam on the agenda. Therefore, how to further improve the flame retardant grade of rigid polyurethane foam without significantly affecting its performance has become an urgent problem to be solved. [0003] Chinese patent CN101962474A discloses a kind of environment-friendly high flame retardant rigid polyurethane foam, which uses polymer polyol, pentane, flame retardant, modified hollow microspheres and polyis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08J9/08C08G101/00
CPCC08G18/388C08G18/6666C08G2110/0025C08G2110/0083C08G18/165C08G18/1825C08G18/2063C08G18/246C08G18/3878C08G18/4883C08G18/6696C08J9/0014C08J9/0023C08J9/0028C08J9/0038C08J9/0052C08J9/0061C08J9/0095C08J2201/022C08J2205/10C08J2375/08C08J2483/12C08G18/18C08G18/242C08J9/125C08J2203/10C08J2483/00
Inventor 戴李宗谢聪罗伟昂曾碧榕许一婷刘新瑜何凯斌李奇李远源陈显明
Owner XIAMEN UNIV