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A kind of organosilicon-modified phytate-coupled ammonium polyphosphate and fire-retardant coating prepared therefrom

A technology of ammonium polyphosphate and fireproof coatings, applied in fireproof coatings, coatings, etc., which can solve the problems of unremarkable fireproof performance of fireproof coatings, unfavorable industrial production, and high price of synergists, so as to prolong stability and storage time, improve Charcoal effect, good barrier effect

Active Publication Date: 2022-07-12
HANGZHOU JLS FLAME RETARDANTS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China CN108455548A (application date May 15, 2018) discloses a preparation method of low-acid value, low-viscosity crystalline type II ammonium polyphosphate. After being applied in fire-resistant coatings, the storage viscosity change rate of the coatings drops from 67% to 20-30%, but the viscosity change is still large
The above-mentioned intumescent fireproof coatings all achieve the purpose of improving the fire resistance of steel structures by adding one or more synergists, but the price of these synergists is high, which is not conducive to industrial production, and it is not conducive to the improvement of the fire resistance of fireproof coatings. Not significant, while ignoring its impact on the overall viscosity, storage period and other issues

Method used

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  • A kind of organosilicon-modified phytate-coupled ammonium polyphosphate and fire-retardant coating prepared therefrom
  • A kind of organosilicon-modified phytate-coupled ammonium polyphosphate and fire-retardant coating prepared therefrom
  • A kind of organosilicon-modified phytate-coupled ammonium polyphosphate and fire-retardant coating prepared therefrom

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 0.5wt% of KH560 (γ-glycidyl ether oxypropyltrimethoxysilane) was added to the ammonium polyphosphate, stirred at high speed for 15s and mixed evenly, then added 1.5wt% of nickel phytate, and continued to stir at high speed for 20s to obtain resistance. The first product of the fuel; after taking it out, put it into a high-temperature electronic oven, and react at 140 ° C for 2 hours. After the reaction, it was taken out and pulverized to obtain PA-APP sample A, white powder with D50 of 12um.

Embodiment 2

[0036] Add 0.5wt% of KH560 (γ-glycidyl ether oxypropyltrimethoxysilane) to ammonium polyphosphate, stir at high speed for 10s and mix well, then add 4.0wt% of zinc phytate, and continue to stir at high speed for 25s to obtain resistance. The first product of the fuel; after taking it out, put it into a high-temperature electronic oven, and react at 100 ° C for 2.5 hours. After the reaction, it was taken out and pulverized to obtain PA-APP sample B, white powder with D50 of 20um.

Embodiment 3

[0038]2.5wt% of KH-1770 ((3,4 epoxycyclohexyl)-ethyltriethoxysilane) was added to ammonium polyphosphate, stirred at a high speed for 40s to mix well, then 1.0wt% of zinc phytate was added, After continuing high-speed stirring for 10s, the first product of the flame retardant was obtained; after taking it out, it was put into a high-temperature electronic oven and reacted at 200° C. for 0.5 hour. After the reaction, it was taken out and pulverized to obtain PA-APP sample C, white powder with D50 of 16um.

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Abstract

The invention discloses an organosilicon-modified phytate-coupling ammonium polyphosphate and a fireproof coating prepared therefrom. An epoxy silane coupling agent and a phytic acid metal salt are respectively added to the ammonium polyphosphate in proportion to mix uniformly. , modified reaction at high temperature for a period of time, pulverized to obtain phytate-coupled ammonium polyphosphate with high phosphorus content and good fluidity. Storage time, the fire resistance time measured under the fire resistance limit test can reach up to 120min, the carbon layer after combustion is dense and continuous, the bonding force with the bottom plate is good, and it does not fall off, and its performance is better than that of the existing commercially available APP. coating.

Description

technical field [0001] The invention relates to the field of fireproof coatings, in particular to an organosilicon-modified phytate-coupled ammonium polyphosphate and a fireproof coating prepared therefrom. Background technique [0002] Steel structure buildings have the characteristics of short construction time, large span and modular design, and have unique advantages in the field of industrial and civil buildings. However, once a fire occurs, the strength of the steel structure will decrease significantly with the increase of temperature. For example, when the temperature rises from 250 to 500 ℃, the mechanical strength of the steel structure decreases to 50% of the original value, and when the temperature is above 750 ℃ It is reduced by 90%, which causes the steel structure building to lose its bearing capacity and collapse under high temperature, which brings great difficulties to rescue and escape. Therefore, to improve the fire resistance of steel structure building...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K9/04C08K3/32C09D133/04C09D5/18C09D7/61C09D7/63
Inventor 徐玲裘雪阳朱峰林世超
Owner HANGZHOU JLS FLAME RETARDANTS CHEM
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