Cross-linked type insoluble halogen-free flame retardant and preparation method and application thereof

A flame retardant, cross-linked technology, used in the field of halogen-free flame retardants, cross-linked insoluble halogen-free flame retardants

Active Publication Date: 2016-01-06
烟台蓝海博隆超纤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the flame retardant synthetic leather manufacturing industry, flame retardants are required to have high flame retardant efficiency and are

Method used

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  • Cross-linked type insoluble halogen-free flame retardant and preparation method and application thereof
  • Cross-linked type insoluble halogen-free flame retardant and preparation method and application thereof
  • Cross-linked type insoluble halogen-free flame retardant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Add 216g (0.4mol) 75% solid content tetrakis(hydroxymethyl)phosphorus sulfate aqueous solution, 78g (1.3mol) urea, 25.2g (0.2mol) melamine, 2.2g hexamethylenetetramine into a flask with a removable mouth Stir 110g of water and heat to 60°C. After reacting for 60 minutes, add 4.4g of aminopropyltriethoxysiloxane. After heating to 95°C for 10 minutes, the viscosity of the reactant gradually increases and gradually becomes lighter from milky white. After stirring and reacting for 2 minutes, a viscous transparent substance is formed, and the viscosity increases rapidly to form a transparent brittle gel. The gel was taken out and dried in a blast drying box at 120°C for 4 hours. The dried white lumps were taken out and crushed and ground in a grinder to over 300 meshes to obtain a cross-linked insoluble halogen-free flame retardant.

Example Embodiment

[0023] Example 2

[0024] Add 216g (0.4mol) 75% solid content tetramethylol phosphate aqueous solution, 60g (1mol) urea, 37.8g (0.45mol) dicyandiamide, and 12.6g (0.1mol) melamine into a flask with a removable mouth. , 4g hexamethylenetetramine and 160g water, stir and heat up to 70°C, after 40min reaction, add 6g aminopropyltrimethoxysiloxane, heat up to 95°C and react for 10min, the viscosity of the reactant gradually increases. The milky white gradually fades, and after stirring and reacting for 2 minutes, a viscous transparent substance is formed, and the viscosity increases rapidly to form a transparent brittle gel. The gel was taken out and dried in a blast drying box at 120°C for 4 hours. The dried white lumps were taken out and crushed and ground in a grinder to over 300 meshes to obtain a cross-linked insoluble halogen-free flame retardant.

Example Embodiment

[0025] Example 3

[0026] Add 216g of 75% solid content tetramethylol phosphate aqueous solution, 60g of urea, 50.4g of melamine, 6.48g of hexamethylenetetramine and 216g of water into a flask with a removable mouth, stir and heat to 70℃, and react for 60min Then, 10.8g of aminopropyltrimethoxysiloxane was added, and the reaction was heated to 95°C for 15 minutes. The viscosity of the reactant gradually increased and gradually faded from milky white. After the reaction was continued for 2 minutes, a viscous transparent substance was formed, and the viscosity increased rapidly. Large formation of transparent brittle gel. The gel was taken out and dried in a blast drying oven at 100°C for 6 hours. The dried white lumps were taken out and crushed and ground to a size of 300 mesh or more in a grinder to obtain a cross-linked insoluble halogen-free flame retardant.

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Abstract

The invention discloses a cross-linked type insoluble halogen-free flame retardant and a preparation method and application thereof, and belongs to the technical field of flame retardants. The flame retardant is a cross-linked polymer formed when a methylol group of tetrakis hydroxymethyl phosphonium sulfate, difunctional amine compounds with amido groups and trifunctional melamine react under the effect of a catalyst hexamethylenetetramine, wherein the phosphorus content is larger than or equal to 10%, the nitrogen content is larger than or equal to 25%, the decomposition temperature is larger than or equal to 300 DEG C, solubility in water at the temperature of 25 DEG C is smaller than 0.01 g per 100 ml, the weight loss rate is smaller than 0.05 g per 100 ml after hot water at the temperature of 100 DEG C is boiled for 2 hours, and the flame retardant is not dissolved in conventional solvent such as ethyl alcohol, acetone, methylbenzene, petroleum ether and ethyl acetate at a temperature within the boiling point range. The flame retardant is used for superfine fiber synthetic leather and textile polyurethane coatings; the horizontal burning rate of the flame retardant is far lower than the flame retardance requirement of superfine fiber synthetic leather in the industry for the horizontal burning rate of smaller than 10 cm/min.

Description

technical field [0001] The invention relates to a halogen-free flame retardant, in particular to a cross-linked insoluble halogen-free flame retardant, a preparation method of the flame retardant, and its application in the fields of superfine fiber synthetic leather and textile polyurethane coating . The invention belongs to the technical field of flame retardants. Background technique [0002] Flame retardants are indispensable additives in the processing and production of polymer products, textiles, building materials and other products. Since the research on flame retardants in the middle of last century, halogen flame retardants mainly containing bromine have been widely used because of their high flame retardant efficiency and low price. Since 1986, the toxicity and environmental issues of polybrominated diphenyl ether flame retardants have been debated in the field of flame retardants. Restriction and banning of halogen flame retardants have become an international ...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08L75/04C08L79/04D06N3/14
Inventor 卢丽燕
Owner 烟台蓝海博隆超纤新材料有限公司
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