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Water-soluble non-combustible ceramic anti-radiation coating and preparation method thereof

An anti-radiation coating and water-soluble technology, applied in fire-resistant coatings, reflective/signal coatings, coatings, etc., can solve problems such as cracking and peeling of the coating layer, and achieve strong pressure resistance, controllable quality, and low thermal seepage coefficient. Effect

Inactive Publication Date: 2012-07-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When active mineral powder and active silica fume are used as the base material of inorganic coatings, the hardening process requires a certain amount of humidity and age. If it is painted in a thin layer outdoors, the coating layer is prone to cracking due to dehydration before it is hydrated. Peeling and other phenomena

Method used

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  • Water-soluble non-combustible ceramic anti-radiation coating and preparation method thereof
  • Water-soluble non-combustible ceramic anti-radiation coating and preparation method thereof
  • Water-soluble non-combustible ceramic anti-radiation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Preparation of modified expandable graphite: Mix flake graphite, hydrogen peroxide and fuming nitric acid, and stir rapidly in an ice-water bath until the reaction is gentle. Acetic acid solution with a content ≥99.5% was stirred continuously, reacted for 60 minutes, washed with water, filtered with suction, and dried to obtain sulfur-free and ash-free modified expandable graphite with an expansion volume of 300-350ml / g, of which flake graphite, fuming nitric acid, The ratio of hydrogen peroxide and acetic acid is 5(g): 12(ml): 1(ml): 5(ml);

[0034] 2) Particle size control of each solid material: Grind mineral powder, silica fume, talc powder, mica powder, redispersible latex powder, hydroxyethyl methylcellulose, etc. until the particle size distribution is 10-40 μm, and the particles Smoother, less large grains and grains with sharp water chestnut;

[0035] 3) Preparation of water-soluble non-combustible ceramic anti-radiation coating: active material, inorganic fi...

Embodiment 2

[0039] 1) Preparation of modified expandable graphite: according to the mass ratio flake graphite: KMnO 4 =1:0.3 ratio to add KMnO to flake graphite 4 , stir well, add 70% HClO 3 solution, maintain a solid-to-liquid ratio of 1:4, keep at 35°C for 90 minutes with intermittent stirring, then wash with water, filter with suction, and dry to obtain modified expandable graphite with an expansion volume of 550ml / g;

[0040] 2) Particle size control of each solid material: grind mineral powder, silica fume, talc powder, mica powder, zinc-barium powder, redispersible latex powder, hydroxyethyl methylcellulose, etc. until the particle size distribution is within 10 ~40μm, the particles are smoother, and the large particles and particles with sharp water chestnuts are less;

[0041] 3) Preparation of water-soluble non-combustible ceramic anti-radiation coating: active material, inorganic filler, redispersible latex powder, hydroxyethyl methylcellulose, modified expandable graphite, wa...

Embodiment 3

[0043] 1) Preparation of modified expandable graphite: according to the mass ratio flake graphite: KMnO 4 =1:0.35 ratio to add KMnO to flake graphite 4 , stir well, add 70% HClO 3 solution, maintain a solid-to-liquid ratio of 1:4, keep at 35°C for 90 minutes with intermittent stirring, then wash with water, filter with suction, and dry to obtain modified expandable graphite with an expansion volume of 550ml / g;

[0044] 2) Particle size control of each solid material: grind mineral powder, silica fume, talc powder, mica powder, titanium dioxide powder, redispersible latex powder, hydroxyethyl methylcellulose, etc. until the particle size distribution is between 10 and 40μm, the particles are smoother, and there are fewer large particles and particles with sharp water chestnuts.

[0045] 3) Preparation of water-soluble non-combustible ceramic anti-radiation coating: active material, inorganic filler, redispersible latex powder, hydroxyethyl methylcellulose, modified expandable...

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Abstract

The invention relates to a water-soluble non-combustible ceramic anti-radiation coating and a preparation method thereof. The coating comprises an active material, an inorganic filler, a shrinkage reducing agent, a thickening agent, a flame retardant, a silicate binder, a reflection reinforcing agent and an aid in a mass ratio of (2-2.8):(0.5-1):0.40:(0.01-0.04):(0.4-0.8):2.13:(0.067-0.2):0.3. The coating is formed by fully mixing the components uniformly and can be used for painting or spraying, and a layer of modified fluoro-silicone emulsion is painted on the surface of the coating after the coating is surface-dried. The coating can be used as an exterior wall coating (base coat), and also can be used as a protective coating for the surfaces of an exterior wall thermal insulation plate, mortar, a sintered brick and a building enclosure structure; and the water-soluble ceramic coating has the characteristics of high durability, light weight, high strength, high efficiency, flame retardance, fire resistance, controllable quality, water resistance, alkali resistance, freezing and thawing resistance, cracking resistance, falling resistance and the like.

Description

technical field [0001] The invention relates to a water-soluble non-combustible ceramic anti-radiation coating and a preparation method thereof, which is mainly used as a protective coating for exterior wall materials, building materials and building enclosure structures. Background technique [0002] Most organic coatings add raw materials that are harmful to the human body and the environment during the production process. During the production, construction and use of coatings, a large amount of harmful waste water and waste gas will be discharged, causing serious pollution to the environment, and organic coatings are extremely flammable. , which causes the flame to spread rapidly during the combustion process, producing a large amount of flammable and toxic gases, which poses a huge safety hazard. For this reason, the development of low-pollution or non-pollution environmentally friendly coatings has received extensive attention. [0003] At present, the base materials ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/33C09D5/18C09D7/12C04B41/85
Inventor 黄健宋雪峰马保国蹇守卫赵子强殷海波段超群
Owner WUHAN UNIV OF TECH
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