An intumescent flame-retardant heat-insulating fireproof coating and its preparation method

Abstract

The invention relates to an intumescent flame-retardant heat-insulating fireproof coating and a preparation method thereof. It is formed by mixing component A, group B and auxiliary agents. Combustion agent, organic flame retardant, high temperature adhesive, combustion accelerant, water remover, smoke absorber, anti-aging agent, ultraviolet absorber; B component includes: curing agent, plasticizer, chain extender; auxiliary agent is : Thinner. The advantages of the present invention are: it is suitable for the protection of various materials indoors and outdoors, especially suitable for occasions with high fire resistance requirements, such as electric power, information, petrochemical industries, etc., and can delay the ignition of the object or reduce the burning speed of the protected substrate , when the surface temperature of the intumescent flame-retardant and heat-insulating fireproof coating exceeds 290 degrees, it can quickly release heat and expand to form a carbonaceous flocculent isolation layer to isolate the conduction of thermal effects.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant thermal insulation materials, and in particular relates to an intumescent flame-retardant thermal insulation fireproof coating with dibutylene rubber as a binder and a preparation method thereof. Background technique [0002] Fireproof coatings are widely used in many aspects such as construction, transportation, electrical appliances, military industry, chemical industry, textiles, ancient buildings and cultural relics protection. When a fire occurs, it can reduce the flammability of the surface of the coated material and retard the rapid spread of the fire. [0003] At present, fire retardant coatings in the market are divided into intumescent fire retardant coatings and non-intumescent fire retardant coatings. [0004] 1. Non-intumescent fireproof coatings are mainly composed of artificially synthesized non-combustible or non-combustible organic polymer resins (such as acrylic resins) ...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when a fire occurs, the intumescent fire retardant coating first prevents the spread of the fire, and then the coating expands to form a uniform and dense honeycomb or spongy carbon foam layer, which isolates the flame from the object and further prevents or Delay the fire and reduce the surface temperature of the material to achieve the purpose of fire prevention. However, due to the influence of the expansion rate and magnification of the coating, the heat conduction effect will be quickly reflected on the protected material, and the protection time is limited and cannot be obtained in a short time. In the case of rescue, the protected material can also burn or lose its structural function due to high temperature, causing secondary damage and making rescue difficult

[0006] At the same time, the fire retardant coatings on the market still have shortcomings such as short service life, insufficient weather resistance, and easy to fall off.

Images