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Polyurethane foam with flame-retardant function and preparation method thereof

A polyurethane foam and functional technology, applied in the field of flame retardant foam materials, can solve the problems of reduced flame retardant durability, general flame retardant performance, large addition amount, etc., and achieve the effects of high flame retardant efficiency, low cost and simple operation.

Inactive Publication Date: 2020-09-04
徐毓敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chlorinated paraffin is a chlorinated derivative of paraffin. It has the advantages of low volatility, flame retardancy, good barrier property, and low price. It can be used as additives such as plasticizers and flame retardants. However, the additive flame retardant The addition amount is relatively large, the flame retardant performance is average, and the additive flame retardant easily migrates out of the polymer network with time, reducing the durability of flame retardant

Method used

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  • Polyurethane foam with flame-retardant function and preparation method thereof
  • Polyurethane foam with flame-retardant function and preparation method thereof
  • Polyurethane foam with flame-retardant function and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Preparation of carboxyl-containing chlorinated paraffin 42: Dissolve 20 g of chlorinated paraffin 42 in 210 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 28 g of potassium carbonate, and react at 55° C. for 30 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol, and the product was vacuum-dried at 100° C. for 5 h to obtain carboxyl-containing chlorinated paraffin 42.

[0036] (2) Preparation of chlorinated paraffin 42 containing acid chloride: add 70mol carboxyl-containing chlorinated paraffin 42 to the reaction kettle, add 85mol phosphorus trichloride dropwise, stir and heat up to 50°C, react for 6h, cool to room temperature, and stand to separate Layer to obtain chlorinated paraffin 42 containing acid chloride.

[0037] (3) Preparation of isocyanurate-modified chlorinated paraffin 42: add 100mol tris(2-hydroxyethyl)isocyanurate and an appropriate amount of acid...

Embodiment 2

[0041] (1) Preparation of carboxyl-containing chlorinated paraffin 52: Dissolve 20 g of chlorinated paraffin 52 in 220 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 29 g of potassium carbonate, and react at 80° C. for 10 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol. The product was vacuum-dried at 100° C. for 5 h to obtain carboxyl-containing chlorinated paraffin 52.

[0042] (2) Preparation of chlorinated paraffin 52 containing acid chloride: add 70mol carboxyl-containing chlorinated paraffin 52 to the reaction kettle, add dropwise 85mol phosphorus trichloride, stir and heat up to 70°C, react for 4h, cool to room temperature, let stand to separate layer to obtain the chlorinated paraffin 52 containing the acid chloride.

[0043](3) Preparation of isocyanurate-modified chlorinated paraffin 52: add 100mol tris(2-hydroxyethyl)isocyanurate and an appropriate amount of a...

Embodiment 3

[0047] (1) Preparation of carboxyl-containing chlorinated paraffin 70: Dissolve 20 g of chlorinated paraffin 52 in 200 mL of acetone, stir to dissolve, add 20 g of p-hydroxybenzoic acid and 25 g of potassium carbonate, and react at 70° C. for 24 h under nitrogen protection. After the reaction, the pH was adjusted to 3.0 with hydrochloric acid, and then extracted with ethanol, and the product was vacuum-dried at 100°C for 5 hours to obtain carboxyl-containing chlorinated paraffin 70.

[0048] (2) Preparation of chlorinated paraffin 70 containing acid chloride: add 70mol of carboxyl-containing chlorinated paraffin 52 to the reaction kettle, add 85mol of phosphorus trichloride dropwise, stir and heat up to 60°C, react for 5h, cool to room temperature, and stand to separate layer to obtain chlorinated paraffin 70 containing acid chloride.

[0049] (3) Preparation of isocyanurate-modified chlorinated paraffin 70: add 100mol tris (2-hydroxyethyl) isocyanurate and an appropriate amou...

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Abstract

The invention discloses polyurethane foam with a flame retardant function. The polyurethane foam material is formed by curing polyol with a flame-retardant function. The preparation method of the polyol comprises the following steps: reacting chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin; acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin; then carrying out esterification reaction with tris (2-hydroxyethyl) isocyanurate to obtain isocyanurate modified hydroxyl-containing chlorinated paraffin and then reacting with tetrabromophthalic anhydride to obtain monobasic acid; and carrying out esterification reaction on the monobasic acid and tetrabromobisphenol A epoxy resin to preparethe polyol with the flame-retardant function; the preparation method has the advantages that the operation is simple, the raw material source is wide, the reaction condition is mild, the industrial production is met, and the preparation method can be used for preparing the flame-retardant polyurethane foam material.

Description

technical field [0001] The invention relates to a polyurethane foam with flame-retardant function and a preparation method thereof, belonging to the field of flame-retardant foam materials. Background technique [0002] Polyurethane foam is a low-density microporous urethane polymer material produced by the reaction of polyester or polyether polyols with isocyanate. It has light weight, low water absorption, good heat insulation, strong weather resistance, and low thermal conductivity. As well as good mechanical properties and chemical corrosion resistance, and has strong bond strength with various materials, it is widely used as thermal insulation materials for petrochemical pipelines, refrigeration equipment, transportation equipment and buildings. However, polyurethane foam without flame retardant treatment, because of its structure containing hydrocarbon groups, ether bonds, ester groups and other groups, makes polyurethane easy to burn and poses hazards to human life an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/58C08G18/42C08G59/16C08J9/14C08J9/08C08L75/06
CPCC08G18/4045C08G18/42C08G18/582C08G18/584C08G59/1477C08J9/08C08J9/144C08J2203/02C08J2203/142C08J2203/184C08J2375/06
Inventor 徐毓敏
Owner 徐毓敏
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