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Halogen-free nitrogen-phosphorus-containing macromolecular intumescent flame retardant and preparation method thereof

An intumescent flame retardant and macromolecular technology, which is applied in the field of flame retardant production, can solve the problem of unreasonable formula composition and production process of halogen-free flame retardants, poor stability and durability of flame retardants, and unsuitable for use In order to achieve the effect of enhancing synergistic effect, good flame retardant effect and improving dispersibility

Pending Publication Date: 2020-12-29
向红建
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the formula composition and production process of halogen-free flame retardants are unreasonable, resulting in poor stability and flame-retardant

Method used

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  • Halogen-free nitrogen-phosphorus-containing macromolecular intumescent flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]A halogen-free nitrogen-phosphorus macromolecular intumescent flame retardant, which is made of the following parts by weight of raw materials: 40 parts of polyphosphoric acid, 20 parts of pentaerythritol, 18 parts of melamine, 6 parts of titanium dioxide, silicon 3 parts of greystone powder, 5 parts of aluminum hydroxide, 2 parts of hydrotalcite, 4 parts of sodium hexametaphosphate, 2 parts of potassium diphenylsulfone sulfonate, 3 parts of m-phenylene tetra(xylyl) bisphosphate, polycarbonate 6 parts of ester, 2 parts of 2,5-diaminoadipate tetramethylene phosphoric acid, 2 parts of silicon phosphate.

[0027]The preparation method of the flame retardant includes the following steps:

[0028](1) Add polyphosphoric acid into the reaction kettle, add pentaerythritol while stirring after heating up, and then raise the temperature again after stirring evenly, and get the reaction material for use after heat preservation reaction;

[0029](2) Add melamine to the mixer, then add the prepared...

Embodiment 2

[0035]A halogen-free nitrogen-phosphorus macromolecular intumescent flame retardant, which is made of the following parts by weight of raw materials: 42 parts of polyphosphoric acid, 24 parts of pentaerythritol, 20 parts of melamine, 8 parts of titanium dioxide, and silicon 4 parts of graystone powder, 6 parts of aluminum hydroxide, 3 parts of hydrotalcite, 5 parts of sodium hexametaphosphate, 3 parts of potassium diphenylsulfone sulfonate, 4 parts of m-phenylene tetra(xylyl) bisphosphate, polycarbonate 7 parts of ester, 3 parts of 2,5-diaminoadipate tetramethylene phosphoric acid, 3 parts of silicon phosphate.

[0036]The preparation method of the flame retardant includes the following steps:

[0037](1) Add polyphosphoric acid into the reaction kettle, add pentaerythritol while stirring after heating up, and then raise the temperature again after stirring uniformly, and get reaction materials for use after heat preservation reaction;

[0038](2) Add melamine to the mixer, then add the prep...

Embodiment 3

[0044]A halogen-free nitrogen-phosphorus macromolecular intumescent flame retardant, the flame retardant is made of the following parts by weight of raw materials: 45 parts of polyphosphoric acid, 25 parts of pentaerythritol, 22 parts of melamine, 8 parts of titanium dioxide, silicon 5 parts of greystone powder, 7 parts of aluminum hydroxide, 4 parts of hydrotalcite, 6 parts of sodium hexametaphosphate, 4 parts of potassium diphenylsulfone sulfonate, 5 parts of m-phenylene tetra(xylyl) bisphosphate, polycarbonate 8 parts of ester, 4 parts of 2,5-diaminoadipate tetramethylene phosphoric acid, 4 parts of silicon phosphate.

[0045]The preparation method of the flame retardant includes the following steps:

[0046](1) Add polyphosphoric acid into the reaction kettle, add pentaerythritol while stirring after heating up, and then raise the temperature again after stirring uniformly, and get reaction materials for use after heat preservation reaction;

[0047](2) Add melamine to the mixer, then ad...

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Abstract

The invention provides a halogen-free nitrogen and phosphorus-containing macromolecular intumescent flame retardant and a preparation method thereof, and relates to the technical field of flame retardant production. The flame retardant is prepared from the following raw materials in parts by weight: 40-45 parts of polyphosphoric acid, 20-25 parts of pentaerythritol, 18-22 parts of melamine, 6-8 parts of titanium dioxide, 3-5 parts of wollastonite powder, 5-7 parts of aluminum hydroxide, 2-4 parts of hydrotalcite, 4-6 parts of sodium hexametaphosphate, 2-4 parts of diphenyl sulfone potassium sulfonate, 3-5 parts of m-phenylene tetra(xylyl) diphosphate, 6-8 parts of polycarbonate and 2-4 parts of 2,5-diaminoadipic acid tetramethylene phosphoric acid and 2-4 parts of silicon phosphate. The defects of the prior art are overcome, the synergistic effect of nitrogen and phosphorus is effectively enhanced, the flame retardant does not contain halogen or heavy metals, is non-toxic and non-corrosive, does not generate dense smoke or expand and foam when meeting fire during firing, thereby effectively prolonging the fire endurance, and has the advantages of excellent overall performance, favorable flame retardancy, high stability, favorable dispersity and suitability for popularization.

Description

Technical field[0001]The invention relates to the technical field of flame retardant production, in particular to a halogen-free nitrogen-phosphorus macromolecular intumescent flame retardant and a preparation method thereof.Background technique[0002]Flame retardants, that is, functional additives that impart flame retardancy to flammable polymers. There are many types of flame retardants, which are divided into additive flame retardants and reactive flame retardants according to the method of use. Among them, the additive flame retardant is added to polymers such as fireproof coatings by mechanical mixing to make the polymers flame retardant. At present, additive flame retardants mainly include organic flame retardants and inorganic flame retardants, halogen flame retardants (organic chloride and organic bromide) and non-halogen. Because halogen flame retardants produce toxic substances during use, they not only endanger the environment but also endanger people's health. Therefore,...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/02C08K5/521C08K5/3492C08K3/34C08K5/42C08K5/523C08K5/5317
CPCC08K13/02C08K5/521C08K5/34922C08K3/34C08K5/42C08K5/523C08K5/5317C08K2201/014C08L69/00
Inventor 向红建
Owner 向红建