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Preparation method and application of organosilicone flame-retardant fireproof coating

A technology for fire-retardant coatings and silicones, applied in fire-resistant coatings, coatings, etc., can solve the problems of easy aging, easy combustion, poor fire safety, etc., and achieve the effect of simple preparation method and good bonding performance.

Inactive Publication Date: 2016-11-09
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor fire safety, easy aging and easy burning of flammable materials such as building exterior wall insulation materials, the present invention proposes a preparation method and application of an organic silicon flame retardant coating. Solvent-free low-viscosity silicone coating that can be cured quickly at room temperature, not only can achieve flame-retardant and fire-resistant effects on flammable materials, but also has good deformation resistance and bonding performance

Method used

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  • Preparation method and application of organosilicone flame-retardant fireproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 20g of MQ resin, add 20g of hydrogen-containing silicone oil, stir well and evenly under mechanical stirring, and use it as component A; add 48g of vinyl silicone resin, add 20g of platinum complex containing 40ppm, stir fully and evenly under mechanical stirring, and use it as component B; After mixing Group A and B with equal mass for 5 minutes, a silicone flame retardant coating was obtained. Dip or spray it on flammable materials such as epoxy resin, and leave it at room temperature to cure for 120 minutes to obtain a silicone flame retardant coating modified epoxy resin sample. The combustion comparison results show that the uncoated epoxy resin sample burns rapidly, accompanied by the burning material dripping in the molten droplet state and a large amount of harmful smoke. In comparison, the epoxy resin splines modified with silicone flame retardant coatings still maintain the basic shape of the foam within 30s, and after burning for 10s, they can be self-ext...

Embodiment 2

[0024] Add 20g of vinyl silicone resin, 15g of hydrogen-containing silicone oil, 7g of phenyl silicone oil and 3g of nano-silica filler, stir well and evenly under mechanical stirring, and use it as component A; add 40g of vinyl silicone resin, add 100ppm platinum complex Mix 50g of the material, fully and evenly with mechanical stirring, as component B; after mixing components AB and equal mass for 5 minutes, a silicone flame retardant coating is obtained. Spray or apply it to flammable materials such as polyurethane foam, and leave it at room temperature for 90 minutes to cure, and then the surface-modified polyurethane foam material of the silicone flame-retardant coating is prepared.

[0025] The combustion comparison test results are as follows: figure 1 As shown, the polyurethane (PU) foam is easy to ignite, and a large amount of harmful smoke will be generated during the combustion process, and the combustion will be basically completed within 10s. Under the same size ...

Embodiment 3

[0027] Add 15g of hydrogen-containing silicone resin, 15g of silane KH550, 5g of silicone rubber and 15g of layered silicate, stir well and evenly under mechanical stirring, and use it as component A; add 45g of vinyl silicone resin, add 50ppm of platinum complex 50g, fully homogenized by mechanical stirring, as component B; after mixing components AB and equal mass for 5 minutes, a silicone flame retardant coating was obtained. Spray it on the surface of flammable materials such as EPS, and leave it at room temperature for 15 minutes to cure, and then the prepared silicone flame retardant coating surface modifies the EPS material. The results of the combustion comparison test show that: EPS materials are easy to ignite and produce a large amount of toxic gases; however, EPS materials modified with silicone flame-retardant coatings cannot be ignited. According to UL test standards, they have reached the V0 flame-retardant standard.

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Abstract

The invention relates to the technical field of fireproof coatings; for solving the problems that a building exterior wall thermal insulation material and other flammable materials have poor fireproof safety and are easy to age and burn, the invention provides a preparation method and application of an organosilicone flame-retardant fireproof coating. The organosilicone flame-retardant fireproof coating is prepared from the following components in parts by weight: 40-70 parts of organosilicone resin, 20-40 parts of an auxiliary agent, 0-15 parts of a flame-retardant filler, and 4*10<-4>-50*10<-4> parts of a catalyst. The organosilicone resin as a substrate is used for preparing the solvent-free type low-viscosity organosilicone coating which can be rapidly cured at room temperature, flame-retardant fireproof effects on combustible materials can be realized, and besides, the coating has the better ability to resist deformation and better adhesive property.

Description

technical field [0001] The invention relates to the technical field of fire retardant coatings, in particular to a preparation method and application of a solvent-free room temperature curing organic silicon flame retardant coating. Background technique [0002] At present, building exterior wall insulation materials are the main materials for thermal insulation and have been widely used. The organic insulation materials used mainly include polystyrene board (EPS), extruded board (XPS) and polyurethane (PU). The biggest advantages are light weight, heat preservation and good heat insulation. But the biggest drawback is poor fire safety, easy to aging, easy to burn. For example, the fire in the CCTV building was caused by the use of non-flame-retardant organic insulation materials. When these materials cause large-scale fires, they will produce more smoke and toxic gases due to incomplete combustion and pyrolysis. In fire accidents, most people are suffocated to death by in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D183/05C09D183/04C09D7/12C09D5/18
CPCC09D183/04C08K2201/011C08L2201/02C08L2205/025C08L2205/03C08L2205/035C09D5/18C09D7/61C09D7/70C08L83/04C08K3/36C08K7/00C08K3/34C08K5/544C08K3/346C08K5/5419C08K5/5435
Inventor 汤龙程吴谦裴勇兵赵丽吴连斌陈利民蒋剑雄邱化玉
Owner HANGZHOU NORMAL UNIVERSITY
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