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A kind of environmentally friendly structural water-based intumescent fireproof coating and preparation method thereof
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A kind of fire-resistant coating, environment-friendly technology, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of high cost, no application value, etc., achieve low cost, excellent fire-proof effect, and improve the effect of fire-proof performance
Active Publication Date: 2022-05-10
WUHAN INSTITUTE OF TECHNOLOGY
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In patent CN112745703A, graphene and sepiolitepowder are simultaneously applied to fireproof coatings. In patent CN112708316A, modified carbon nanotubes and sepiolite powder are simultaneously applied to fireproof coatings. Due to the high cost of graphene and modified carbon nanotubes, Does not have practical application value
In patent CN109535889A, siliconcarbide, sepiolite, and titanium dioxide are washed with a mixed acid composed of concentrated sulfuric acid and concentrated nitric acid. Although the fire resistance can be improved to a certain extent, it will be accompanied by the generation of a large amount of waste
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[0053] 1) Weigh the raw materials according to the above proportioning requirements;
[0054] 2) Grind the weighed MFAPP, expandable graphite, ascorbic acid, hydroxyethyl cellulose, and sepiolite powder until there are no particles, then add water to fully grind and mix evenly; then add defoamer and dispersant, and continue to grind fully;
[0055] 3) Finally, the acrylate core-shell emulsion and n-octanol are added and thoroughly ground and mixed to obtain the fireproof coating.
Embodiment 2
[0057] A water-based expansion type fireproof coating, its preparation method is roughly the same as that of Example 1, the difference is that each component and its mass percentage are: acrylate core-shell emulsion 20%, MFAPP 32%, expandable graphite 24%, Ascorbic acid 5%, sepiolite powder 5%, hydroxyethyl cellulose 0.5%, dispersant 0.5%, defoamer 0.5%, n-octanol 0.5%, water 12%.
Embodiment 3
[0059] A water-based expansion type fireproof coating, its preparation method is roughly the same as that of Example 1, the difference is that each component and its mass percentage are: acrylate core-shell emulsion 20%, MFAPP 32%, expandable graphite 24%, Ascorbic acid 6.5%, sepiolite powder 3.5%, hydroxyethyl cellulose 0.5%, dispersant 0.5%, defoamer 0.5%, n-octanol 0.5%, water 12%.
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technical field [0001] The invention belongs to the technical field of fireproof coatings, and in particular relates to an environmentally friendlystructural water-based expansion fireproof coating and a preparation method thereof. Background technique [0002] Structural fire-resistant coatings belong to a class of heat-insulating coatings that are coated on the surface of structural components and can protect structural components when a fire occurs or in a high-temperature environment similar to a fire scene; It is heat-insulating fire retardant coating and intumescent fire retardant coating. [0003] Intumescent fireproof coatings are usually composed of ammoniumpolyphosphate, pentaerythritol, and melamine as the acid source (dehydrating agent), carbon source (char forming agent), and gas source (foaming agent) as the main body, supplemented by resin as the main body. The adhesive is composed of pigments, fillers and additives as auxiliary materials according to the a...
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