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Flame retarding polyurethane foam and preparation method thereof

A polyurethane foam, flame retardant technology, applied in the field of polyurethane foam flame retardant, can solve the problem that the flame retardant formula is difficult to meet the requirements of the specification, and achieve the effect of improving the flame retardant performance

Inactive Publication Date: 2012-10-10
JIANGSU KETAI NEW HEAT INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional flame retardant formula of polyurethane "hard foam" (oxygen index below 25) is difficult to meet the requirements of the specification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Add 27g of dimethyl methyl phosphate to 540g of prepared white material (polyether 2300-6, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade), and mix well; (2) Add 54g of graphite to the mixture prepared in step 1), stir and mix evenly; (3) Add 733g of black material (BASF M20S, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade) to the mixture prepared in step 2) In the mixture, use a high-speed mixer to stir evenly, and then use a high-pressure foaming machine to pour it into 0.007326m 3 Mold foaming to produce flame retardant polyurethane foam.

Embodiment 2

[0021] (1) Add 37.8g of dimethyl methyl phosphate to 540g of prepared white material (polyether 2300-6, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade), and mix well; (2 ) Add 54g of graphite (Shijiazhuang Kepeng Flame Retardant Material Factory, industrial grade) to the mixture prepared in step 1), stir and mix evenly; (3) Add 746g of black material (BASF M20S, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade) added to the mixture prepared in step 2) and stirred evenly with a high-speed mixer, then injected into 0.007326m by a high-pressure foaming machine 3 Mold foaming to produce flame retardant polyurethane foam.

Embodiment 3

[0023] (1) Add 54g of dimethyl methyl phosphate to 540g of prepared white material (polyether 2300-6, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade), and mix well; (2) Add 54g of graphite to the mixture prepared in step 1), stir and mix evenly; (3) Add 765g of black material (BASF M20S, Shanghai BASF Polyurethane Specialty Products (China) Co., Ltd., industrial grade) to the mixture prepared in step 2) In the mixture, use a high-speed mixer to stir evenly, and then use a high-pressure foaming machine to pour it into 0.007326m 3 Mold foaming to produce flame retardant polyurethane foam.

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Abstract

The invention discloses a flame retarding polyurethane foam and a preparation method thereof. The flame retarding polyurethane foam comprises the following raw materials of premixed polyether polyol, diisocyanate and a composite flame retardant, wherein the weight ratio of the premixed polyether polyol to the diisocyanate is 1: (1-1.5), the usage amount of the composite flame retardant is 10%-20% of that of the premixed polyether polyol, the composite flame retardant comprises graphite and dimethyl phosphate, and the weight ratio of the graphite to the dimethyl phosphonate is (0.8-3):1. According to the flame retarding polyurethane foam and the preparation method thereof, the used graphite and the dimethyl methyl phosphonate are synergetic with each other, the graphite can be rapidly expanded into an efficient heat insulation oxygen barrier which is capable of preventing polyurethane from flaming, and the dimethyl methyl phosphonate is used for catalyzing dehydration and char formation of polyol to achieve the effect of retarding flame. To improve flame retarding performance of rigid polyurethane foams, compared with rigid polyurethane foam oxygen index generated during the usage of the graphite or the dimethyl methyl phosphonate, the rigid polyurethane foam oxygen index generated during the simultaneous usage of the graphite and the dimethyl methyl phosphonate can be increased by 5.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polyurethane foam, and in particular relates to a flame-retardant polyurethane foam and a preparation method thereof. Background technique [0002] Polyurethane foam contains combustible hydrocarbon segments, low density, and large specific surface area. Polyurethane without flame retardant treatment is combustible. It will burn and decompose in case of fire, producing a large amount of toxic smoke, which brings difficulties to fire fighting. In particular, polyurethane soft foam has a high opening rate and many combustible components. When burning, due to the high air circulation, oxygen is continuously supplied, and it is flammable and not easy to self-extinguish. Many application fields of polyurethane foam, such as building materials, mattresses, furniture, insulation materials, car seat cushions and interior materials, have flame retardant requirements. Foreign countries attach great...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K3/04C08K5/521C08G18/48C08G101/00
Inventor 曹晖贾佳张亮亮
Owner JIANGSU KETAI NEW HEAT INSULATION MATERIAL
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