Decalescence intumescent flame-retardant fireproof waterborne coating and preparation method thereof

Abstract

The invention provides decalescence intumescent flame-retardant fireproof waterborne coating. The decalescence intumescent flame-retardant fireproof waterborne coating is prepared from the following components in parts by weight: 35 to 75 parts of polyethylene glycol phase-change self-crosslinked acrylate film forming emulsion, 5 to 25 parts of galactose intumescent flame-retardant system, 5 to 35 parts of expandable filler, 2 to 4 parts of wetting agent, 1 to 3 parts of thickening agent and 5 to 15 parts of water. The coating can inhibit flame at medium and low temperature by decalescence and realizes heat-insulating protection of an internal material by a high-temperature expandable charcoal layer; the decalescence intumescent flame-retardant fireproof waterborne coating has high phase change heat absorption amount and remarkable cooling fireproof effect. The invention also discloses a preparation method of the coating. The preparation method comprises the following steps: putting water into a stirrer; sequentially adding the thickening agent and the wetting agent in a stirring process, and uniformly mixing; adding the galactose intumescent flame-retardant system and the expandable filler, and mixing and dispersing to be uniform; then adding the polyethylene glycol phase-change self-crosslinked acrylate film forming emulsion in the stirring process, adjusting a pH value of the system, shearing, dispersing, sieving and discharging. The method is simple in process and low in cost.

Description

technical field [0001] The invention relates to the technical field of functional coatings, in particular to a phase-change heat-absorbing expansion type flame-retardant and fire-resistant water-based coating and a preparation method thereof. Background technique [0002] Flame retardant and fire prevention are important issues related to the safety of people's lives and property. Among various disasters, fire is one of the main disasters that most frequently and commonly threaten public safety and social development. According to statistics from the Fire Department of the Ministry of Public Security, in 2015, a total of 338,000 fires were reported across the country, resulting in 1,742 deaths, 1,112 injuries, and direct property losses of 3.95 billion yuan. On May 25, 2015, a particularly serious fire accident occurred in Kangyuan Senior Apartment, Lushan County, Pingdingshan City, Henan Province, resulting in 39 deaths and 6 injuries. The fire area was 745.8 square meters...

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Problems solved by technology

[0013] Although the above research work has achieved some gratifying results, the existing intumescent flame retardant coatings cannot suppress the rapid rise in temperature in the medium and low temperature range, and the fire prevention efficiency is not high, and the existing phase change coatings have no flame retardant and fire prevention effects. Low temperature phase change heat absorption, high temperature expansion carbon layer heat insulation protection phase change heat absorption expansion flame retardant coating is very necessary

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