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A silicon-nitrogen-phosphorus high-efficiency halogen-free flame retardant for fire-resistant flame-retardant coatings and its preparation method and application

A technology of fire-resistant and flame-retardant coatings and flame retardants, which is applied in the direction of fire-resistant coatings, rubber derivative coatings, polyurea/polyurethane coatings, etc., and can solve the problems of deteriorating mechanical properties of polymer materials, low flame-retardant efficiency, and large additions , to achieve good synergistic flame retardant effect, high flame retardant efficiency, and enhanced compatibility

Active Publication Date: 2020-11-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogenated flame retardants in practical applications decompose to generate hydrogen halides during combustion to eliminate active free radicals generated by the combustion reaction of polymer materials. The shortcomings of dense smoke, toxic and corrosive gases, and the existing disadvantages have promoted the research and development of halogen-free flame retardants, such as phosphorus-based, nitrogen-based and silicon-based halogen-free flame retardants
[0003] Most of the traditional halogen-free flame retardants have the disadvantages of low flame retardant efficiency, large addition amount, and deterioration of the mechanical properties of polymer materials due to low compatibility.

Method used

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  • A silicon-nitrogen-phosphorus high-efficiency halogen-free flame retardant for fire-resistant flame-retardant coatings and its preparation method and application
  • A silicon-nitrogen-phosphorus high-efficiency halogen-free flame retardant for fire-resistant flame-retardant coatings and its preparation method and application
  • A silicon-nitrogen-phosphorus high-efficiency halogen-free flame retardant for fire-resistant flame-retardant coatings and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Silicon Nitrogen Phosphorus Efficient Halogen Free Flame Retardant

[0030] Step 1, KH560, triglycidyl isocyanurate and aminoimidazole are added into the reaction vessel, stirred and mixed evenly;

[0031] Step 2: Slowly add mono-isooctyl phosphate dropwise, keep the temperature below 40°C, and after the dropwise addition, raise the temperature to 65°C for 4 hours of reaction.

[0032] Wherein, the mass ratio of KH560, triglycidyl isocyanurate, aminoimidazole and monoisooctyl phosphate in the reaction is 4.5:1.5:0.6:1.1.

Embodiment 2

[0033] Example 2 Silicon Nitrogen Phosphorus Efficient Halogen Free Flame Retardant

[0034] Step 1, KH560 and triglycidyl isocyanurate are added to the reaction vessel, stirred and mixed evenly;

[0035] Step 2: Slowly add diisooctanoate phosphate dropwise, keeping the temperature below 40°C. After the dropwise addition, raise the temperature to 70°C for 3.5 hours.

[0036] The mass ratio of KH560, triglycidyl isocyanurate and diisocaprylic acid phosphate in the reaction is 2.0:1.5:0.3.

Embodiment 3

[0037] Example 3 Silicon Nitrogen Phosphorus Efficient Halogen Free Flame Retardant

[0038] Step 1, adding polyphosphoric acid and isopropanol into the reaction vessel, stirring and mixing evenly;

[0039] Step 2: Slowly add the mixture of KH560, aminoimidazole and triglycidyl isocyanurate dropwise, keep the temperature below 40°C, and then raise the temperature to 80°C for 3 hours after the dropwise addition.

[0040] The mass ratio of KH560, aminoimidazole, triglycidyl isocyanurate, polyphosphoric acid and isopropanol in the reaction is 0.8:0.3:2.6:0.4:0.5.

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Abstract

The invention relates to a silicon, nitrogen and phosphorus efficient halogen-free flame retardant, a preparation method thereof and an application of the flame retardant, and further discloses a fireproof flame-retardant coating and a preparation method thereof. The preparation method includes the steps: adding epoxy siloxane, triglycidyl isocyanurate and aminoimidazole into a reaction container,and uniformly mixing raw materials; slowly dripping phosphoric acid, and heating mixture to reach the temperature of 60-70 DEG C to perform reaction for 3-5 hours to prepare the silicon, nitrogen andphosphorus efficient halogen-free flame retardant. The self-made flame retardant is applied to preparation of the fireproof flame-retardant coating. A structure of a design molecule of the efficientflame retardant integrates an acid source, a carbon source and an air source, formation of carbon can be facilitated in combustion, a compact silicon carbon layer is formed, secondary combustion caused by melt dripping of high-molecular materials in combustion is prevented, better flame resistance is provided for the high-molecular materials, water resistance and weather resistance of the coatingcannot be affected, high flame retardant efficiency can be formed in combustion, and the environments cannot be polluted as the flame retardant is free from halogen.

Description

technical field [0001] The invention relates to a silicon-nitrogen-phosphorus high-efficiency halogen-free flame retardant for fire-proof and flame-retardant coatings, a preparation method and application thereof, and belongs to the technical field of flame-retardant polymer materials. Background technique [0002] Flame retardants are substances that increase the flame resistance of polymer materials, and are divided into additive flame retardants and reactive flame retardants according to the method of use. Additive flame retardants are mainly divided into halogen flame retardants and halogen-free flame retardants. Halogenated flame retardants in practical applications decompose to generate hydrogen halides during combustion to eliminate active free radicals generated by the combustion reaction of polymer materials. The shortcomings of dense smoke, toxic and corrosive gases, and the existing disadvantages have promoted the research and development of halogen-free flame re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/18C09D133/04C09D175/04C09D125/14C09D115/02
Inventor 袁立新沈彬
Owner SOUTHEAST UNIV
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