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Expansive type fireproof coating based on efficient synergist and preparation method thereof

A technology of fire retardant coatings and synergists, applied in fire retardant coatings, epoxy resin coatings, coatings, etc., can solve the problems of reducing the strength of steel structures, safety problems, etc., and achieve the effects of improving strength, low cost, and prolonging fire resistance time.

Inactive Publication Date: 2018-12-07
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire reduced the strength of the steel structure, posing serious safety concerns

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Content of each component:

[0022] Water-based epoxy emulsion (20%), ammonium polyphosphate (26%), melamine (12%), pentaerythritol (8%), rutile titanium dioxide (7%), zirconium nitride (3%), additives (2 %), water (22%).

[0023] Preparation:

[0024] Mix water, fire protection additives and fillers evenly, put them into a grinder with a rotation speed of 2000r / min and grind for 30 minutes, then add water-based epoxy emulsion and additives, stir in a mixer at a low speed for 30 minutes, sieve and discharge, and prepare Water-based intumescent fire retardant coating with high-efficiency synergist.

example 2

[0026] Water-based styrene-acrylic emulsion (20%), ammonium polyphosphate (24%), melamine (11%), pentaerythritol (9%), anatase titanium dioxide (8%), zirconia (2%), additives (2 %), water (24%).

[0027] Preparation:

[0028] Mix water, fire protection additives and fillers evenly, put them into a grinder with a rotation speed of 2000r / min and grind for 30 minutes, then add water-based styrene-acrylic emulsion and additives, stir in a mixer at a low speed for 30 minutes, sieve and discharge, and prepare Water-based intumescent fire retardant coating with high-efficiency synergist.

example 3

[0030] Water-based acrylic emulsion (20%), ammonium polyphosphate (22%), melamine (13%), pentaerythritol (7%), rutile titanium dioxide (6%), zirconium silicate (4%), additives (1%) ), water (27%).

[0031] Preparation:

[0032] Mix water, fire protection additives, and fillers evenly, put them into a grinder with a rotation speed of 2000r / min, and grind for 30 minutes, then add water-based acrylic emulsion and additives, stir in a mixer at a low speed for 30 minutes, and sieve the material to obtain High-efficiency synergist water-based intumescent fire retardant coating.

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Abstract

The invention relates to an expansive type fireproof coating based on an efficient synergist and a preparation method thereof and belongs to the field of functional coatings. The coating is characterized by being prepared by mixing and grinding the substances in a certain proportion: 20% of an aqueous film forming matrix, 22-26% of ammonium polyphosphate, 11-13% of melamine, 7-9% of pentaerythritol, 5-10% of titanium dioxide, 1-5% of a synergist, 1-3.5% of an auxiliary agent and 18.5-26.5% of water. The expansive type fireproof coating provided by the invention has the beneficial effects thatin the initial combustion period, the coating is foamed uniformly and compactly, and in the later period, a fireproof and heat-insulating coated carbon layer structure is formed. The fireproof time is67 min, and the coating is good in waterproof and weather-resistant properties, smooth in surface, simple in preparation process and flow and convenient to operate. The fireproof coating belongs to the field of aqueous coating and is an environment-friendly coating. The coating can be widely applied to the fields of wood structures, steel structures and the like.

Description

technical field [0001] The invention relates to the preparation of a fireproof coating, in particular to the preparation of an intumescent fireproof coating based on a high-efficiency synergist. Background technique [0002] Nowadays, the application of steel structure has been applied to various industries, but fire poses a serious threat to the safety of buildings and industrial facilities. The fire caused the strength of the steel structure to decrease, which brought serious safety problems. As a functional material on the surface of flammable substrates, fire retardant coatings can effectively reduce the flammability of the substrate to be coated, retard the rapid spread of fire, or improve the fire resistance limit of the coated material. Therefore, the existence of fire-resistant coatings is quite effective and meaningful. [0003] The expansion system of intumescent flame retardant coatings is mainly composed of ammonium phosphate (acid source), pentaerythritol (car...

Claims

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Application Information

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IPC IPC(8): C09D5/18C09D163/00C09D125/14C09D133/00C09D7/61C09D7/63
CPCC09D5/185C08K2003/2241C08K2003/2244C08K2003/323C09D7/61C09D7/63C09D125/14C09D133/00C09D163/00C08K13/02C08K3/32C08K5/34922C08K5/053C08K3/22C08K3/28C08K3/34
Inventor 李洪飞冯伟华张胜
Owner BEIJING UNIV OF CHEM TECH
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