Inorganic polymer modification insoluble halogen-free flame retardant and preparation method and application thereof

Abstract

The invention discloses an inorganic polymer modification insoluble halogen-free flame retardant, discloses a preparation method of the inorganic polymer modification insoluble halogen-free flame retardant and application in the field of superfine fiber synthetic leather and textile polyurethane coatings, and belongs to the technical field of fire retardants. The inorganic polymer modification insoluble halogen-free flame retardant is a body crosslinked product formed by water-soluble ammonium polyphosphate with the polymerization degree of 20-1000 and inorganic polymer of the polymerization metal salt through a chemical reaction according to the weight ratio being 100:50-100, the solubility in water at the temperature of 25 DEG C is smaller than 0.01 g / 100 ml, and the inorganic polymer modification insoluble halogen-free flame retardant has the advantage of being insoluble, and can meet the requirement of the flame retardant type synthetic leather processing technology. The inorganic polymer modification insoluble halogen-free flame retardant is applied to superthin fiber synthetic leather and textile polyurethane coatings, can be used for preparing the superfine fiber synthetic leather or textiles with the efficient fire resistance, and has the advantages of being small in additive amount, not affecting the characteristics of textiles and the like.

Description

technical field

[0001] The invention relates to a halogen-free flame retardant, in particular to an insoluble halogen-free flame retardant modified by an inorganic polymer, and to a preparation method of the flame retardant, as well as to the superfine fiber synthetic leather, textile polyurethane coating field applications. The invention belongs to the technical field of flame retardants. Background technique

[0002] Flame retardant is a special chemical additive used to improve the combustion performance of flammable and combustible materials. It is divided into: halogen, phosphorus, halogen-phosphorus, nitrogen, silicon, aluminum-magnesium, etc. According to the chemical structure, it is divided into inorganic flame retardants, organic flame retardants, polymer flame retardants, etc., and according to the relationship between flame retardants and flame retardant materials, it is divided into additive flame retardants and reactive flame retardants. Brominated flame reta...

Examples

Embodiment 1

[0021] 100g of water-soluble ammonium polyphosphate with a degree of polymerization of 20 was dissolved in 25°C to prepare a 30% aqueous solution, and 75g of polyaluminum sulfate was dissolved in 25°C water to prepare a 30% aqueous solution; the two solutions were mixed and kept at 25°C After stirring and reacting for 30 minutes, filter the resulting white precipitate, rinse the filter cake twice with clean water at room temperature and dry it in a blast drying oven at 100°C for 3 hours to obtain a white powder insoluble inorganic polymer halogen-free flame retardant The yield is 95%; the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.11g / 100ml.

Embodiment 2

[0023] 100g of water-soluble ammonium polyphosphate with a degree of polymerization of 1000 is dissolved in water at 80°C to make a 30% aqueous solution, and 50g of white polyaluminum chloride is dissolved in water at 80°C to make a 50% solution; mix the two solutions , keep stirring and reacting at 80°C for 20min, filter the resulting white precipitate, wash the filter cake twice with clean water at room temperature and dry it in a blast drying oven at 100°C for 3 hours to obtain a white powdery insoluble inorganic polymer Halogen-free flame retardant; the yield is 93%, the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.11g / 100ml.

Embodiment 3

[0025]100g of water-soluble ammonium polyphosphate with a degree of polymerization of 20 was dissolved in water at 50°C to make a 50% aqueous solution, and 100g of polyferric chloride was dissolved in water at 50°C to make a 30% solution; the two solutions were mixed and kept at 50 After stirring and reacting at ℃ for 40 minutes, the resulting tan precipitate was filtered, the filter cake was washed twice with clean water at room temperature and dried in a blast drying oven at 120 ℃ for 2 hours to obtain a tan powdery insoluble inorganic polymer Halogen flame retardant; the yield is 97%, the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.10g / 100ml. Example 4

technical field

[0001] The invention relates to a halogen-free flame retardant, in particular to an insoluble halogen-free flame retardant modified by an inorganic polymer, and to a preparation method of the flame retardant, as well as to the superfine fiber synthetic leather, textile polyurethane coating field applications. The invention belongs to the technical field of flame retardants. Background technique

[0002] Flame retardant is a special chemical additive used to improve the combustion performance of flammable and combustible materials. It is divided into: halogen, phosphorus, halogen-phosphorus, nitrogen, silicon, aluminum-magnesium, etc. According to the chemical structure, it is divided into inorganic flame retardants, organic flame retardants, polymer flame retardants, etc., and according to the relationship between flame retardants and flame retardant materials, it is divided into additive flame retardants and reactive flame retardants. Brominated flame reta...

Examples

Embodiment 1

[0021] 100g of water-soluble ammonium polyphosphate with a degree of polymerization of 20 was dissolved in 25°C to prepare a 30% aqueous solution, and 75g of polyaluminum sulfate was dissolved in 25°C water to prepare a 30% aqueous solution; the two solutions were mixed and kept at 25°C After stirring and reacting for 30 minutes, filter the resulting white precipitate, rinse the filter cake twice with clean water at room temperature and dry it in a blast drying oven at 100°C for 3 hours to obtain a white powder insoluble inorganic polymer halogen-free flame retardant The yield is 95%; the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.11g / 100ml.

Embodiment 2

[0023] 100g of water-soluble ammonium polyphosphate with a degree of polymerization of 1000 is dissolved in water at 80°C to make a 30% aqueous solution, and 50g of white polyaluminum chloride is dissolved in water at 80°C to make a 50% solution; mix the two solutions , keep stirring and reacting at 80°C for 20min, filter the resulting white precipitate, wash the filter cake twice with clean water at room temperature and dry it in a blast drying oven at 100°C for 3 hours to obtain a white powdery insoluble inorganic polymer Halogen-free flame retardant; the yield is 93%, the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.11g / 100ml.

Embodiment 3

[0025]100g of water-soluble ammonium polyphosphate with a degree of polymerization of 20 was dissolved in water at 50°C to make a 50% aqueous solution, and 100g of polyferric chloride was dissolved in water at 50°C to make a 30% solution; the two solutions were mixed and kept at 50 After stirring and reacting at ℃ for 40 minutes, the resulting tan precipitate was filtered, the filter cake was washed twice with clean water at room temperature and dried in a blast drying oven at 120 ℃ for 2 hours to obtain a tan powdery insoluble inorganic polymer Halogen flame retardant; the yield is 97%, the solubility in water at 25°C is less than 0.01g / 100ml, and the weight loss rate after boiling in hot water at 100°C for 2 hours is less than 0.10g / 100ml. Example 4

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