Water-based intumescent fire-retardant coating for timber structure and preparation method of coating

Abstract

The invention discloses a water-based intumescent fire-retardant coating for a timber structure. The coating comprises a first component and a second component which are mixed in the ratio of (4-5):(1.2-1.5) in parts by weight, wherein the first component and the second component comprise components in parts by weight as follows: the first component comprises components in parts by weight as follows: a silicone-acrylate emulsion, a char-forming catalyst, a first component char-forming agent, a foaming agent, a pigment, a film-forming aid, a dispersing agent and an auxiliary material; the second component comprises components in parts by weight as follows: a composite emulsion, a second component char-forming agent, a flame retardant, a layered double hydroxide, filler, antimony trioxide, a film-forming agent, a thickening agent, an antifoaming agent and a curing agent. The coating has excellent physical and chemical properties, good fire retardance and a certain decoration property, is an efficient, environment-friendly and multifunctional fire-retardant coating and completely conforms to the development direction of the fire-retardant coating industry.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a wood structure water-based intumescent fireproof coating and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] The fire protection of wooden structures is essentially the fire protection of wooden structural components. From ancient times to the present, people have been researching and exploring ways to effectively protect wooden structures from fire. The main methods that have been used are clay veneer fire protection / lath plastering or steel wire plastering veneer fire protection, cement mortar or concrete fire protection, fire protection boards on wooden components, etc. Although measures such as fireproof board / cement mortar / concrete or plastering have played a certain role in the fire protection of wooden structures, their protective effect and applicability are not very ideal. The most widely used, mos...

AI Technical Summary

Problems solved by technology

[0003] At present, the base materials widely used in water-based intumescent fireproof coatings for wood structures are basically pure acrylic emulsion, styrene-acrylic emulsion, vinegar-acrylic emulsion, polyvinyl acetate emulsion, chlorine partial emulsion, etc., although these emulsions have better cold resistance as water-based fireproof coatings. It can be cured at room temperature, but its heat resistance is poor, it is easy to stick back at high temperature, it is easy to stick to dust, it is easy to become brittle at low temperature, and its air permeability is also poor.

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