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Aluminum phosphate gum-based halogen-free high-expansion type flame-retardant heat-insulating fireproof coating material preparation method

An aluminum phosphate gel-based, fire-resistant coating technology, applied in fire-resistant coatings, coatings, etc., can solve the problems of poor fluidity, few reports of all-inorganic fire-resistant coatings, low interface bond strength, etc., and achieve low thermal conductivity. , good interface bonding effect, excellent flame retardant and heat insulation effect

Active Publication Date: 2019-12-20
王明超 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most expandable coatings are organic or organic / inorganic composite, and there are few reports on all inorganic fire-resistant coatings with high foam expansion
At the same time, most of the all-inorganic fireproof coatings use water as the matrix solution, so there are disadvantages such as poor fluidity and low interface bonding strength.

Method used

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  • Aluminum phosphate gum-based halogen-free high-expansion type flame-retardant heat-insulating fireproof coating material preparation method
  • Aluminum phosphate gum-based halogen-free high-expansion type flame-retardant heat-insulating fireproof coating material preparation method
  • Aluminum phosphate gum-based halogen-free high-expansion type flame-retardant heat-insulating fireproof coating material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 (aluminum phosphate gum-based halogen-free high-expansion flame-retardant heat-insulating fireproof coating suitable for metal materials)

[0025] The preparation method of the aluminum phosphate rubber-based halogen-free high-expansion flame-retardant heat-insulating fireproof coating provided in this example includes the following steps in order:

[0026] (1) Mix ammonium polyphosphate, sodium borate, potassium nitrate, mullite powder, α-alumina, and vermiculite powder according to the mass ratio of 3.5:1:2.5:6:2:0.45, and then put them into a planetary ball mill, Ball mill for 5 hours at a speed of 250r / min to obtain aggregates with fine particle size and uniform mixing;

[0027] (2) Dilute the concentrated phosphoric acid of 85% concentration with water into dilute phosphoric acid of 60% concentration, then put it into a water bath with stirring and heat it to 85°C for subsequent use;

[0028] (3) Slowly add the aluminum hydroxide powder to the dilute pho...

Embodiment 2

[0030] Example 2 (aluminum phosphate gum-based halogen-free high-expansion flame-retardant heat-insulating fireproof coating suitable for wood products)

[0031] (1) Mix ammonium polyphosphate, sodium borate, potassium nitrate, mullite powder, α-alumina, and vermiculite powder according to the mass ratio of 5:0.7:2:7:1:0.1, and then put them into a planetary ball mill, Ball mill for 5 hours at a speed of 250r / min to obtain aggregates with fine particle size and uniform mixing;

[0032] (2) Dilute the concentrated phosphoric acid of 85% concentration with water into dilute phosphoric acid of 60% concentration, then put it into a water bath with stirring and heat it to 85°C for subsequent use;

[0033] (3) Slowly add aluminum hydroxide powder to the dilute phosphoric acid prepared in the above step (2) while stirring, to prevent caking and cause fluidity to drop, wherein the molar ratio of aluminum and phosphorus is 0.75:1, thus preparing A white aluminum phosphate latex liquid...

Embodiment 3

[0035] Example 3 (aluminum phosphate gum-based halogen-free high-expansion flame-retardant heat-insulating fireproof coating suitable for organic products)

[0036] (1) Mix ammonium polyphosphate, sodium borate, potassium nitrate, mullite powder, α-alumina, and vermiculite powder according to the mass ratio of 7:1.3:1.5:6:3:0.1, and then put them into a planetary ball mill, Ball mill for 5 hours at a speed of 250r / min to obtain aggregates with fine particle size and uniform mixing;

[0037] (2) Dilute the concentrated phosphoric acid of 85% concentration with water into dilute phosphoric acid of 60% concentration, then put it into a water bath with stirring and heat it to 80°C for subsequent use;

[0038] (3) Slowly add aluminum hydroxide powder to the dilute phosphoric acid prepared in the above step (2) while stirring, in order to prevent agglomeration from causing a decrease in fluidity, wherein the molar ratio of aluminum to phosphorus is 1:1, thus preparing A white alumi...

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Abstract

The invention discloses an aluminum phosphate gum-based halogen-free high-expansion type flame-retardant heat-insulating fireproof coating material preparation method, which comprises: pre-preparing aggregate from ammonium polyphosphate, sodium borate, potassium nitrate, mullite powder, alpha-aluminum oxide and vermiculite powder, mixing a latex liquid as a matrix and the aggregate to prepare a fireproof coating material, and carrying out other steps, wherein the latex liquid is generated by a reaction of aluminum hydroxide and phosphoric acid. According to the invention, the coating materialhas a good interface bonding effect, can be wetted and adhered to various materials, is firmly bonded with a protected matrix after being burned, is suitable for various materials such as metal materials, glass fiber reinforced plastics, wooden products and the like, and has high foaming expansibility after meeting fire, wherein the thickness of 1.5 mm can be expanded to 11 mm after the coating material meets fire, the expansion rate reaches up to 633%, and holes with different sizes and sponge-like layers are formed in the coating material; and the fireproof coating material can insulate andreduce the flame (900-1100 DEG C) of a butane spraying gun to not higher than 130 DEG C within 20 min, and to not higher than 90 DEG C within 10 min.

Description

technical field [0001] The invention belongs to the technical field of preparation of fireproof coatings, in particular to an aluminum phosphate gum-based halogen-free high-expansion flame retardant that is purely inorganic, environmentally friendly, non-toxic and tasteless, has strong versatility, high expansibility, and excellent flame-retardant and heat-insulating effects Preparation method of heat-insulating fireproof coating. Background technique [0002] Fire retardant coating is a non-combustible or flame-retardant substance that is coated on the surface of combustible substrates to effectively prevent the substrate from burning or retard its combustion spread by reducing the thermal conductivity or increasing the thermal resistance. According to the classification of ingredients, fire retardant coatings can be divided into oil-based organic type, all-inorganic type and organic / inorganic composite type coatings. Among them, all-inorganic coatings have the advantages ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/18
CPCC09D1/00C09D5/18
Inventor 王明超罗星娜冯钊杰刘正宏
Owner 王明超
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