Sound-absorbing radiation protective paint and preparation method thereof

Abstract

The invention relates to a sound-absorbing radiation protective paint, which comprises the following components in percentage by weight: 30 to 38 percent of porous modified starch, 5.0 to 9.5 percent of styrene-acrylic latex emulsion, 33 to 41 percent of barite, 0.5 to 1 percent of iron oxide, 0.25 to 1 percent of sodium polycarboxylate dispersant, 0.01 to 1 percent of brightening agent, 1.0 to 6 percent of titanium white, 0.5 to 1 percent of defoamer, 0.01 to 1 percent of mildew preventive, 13 to 18 percent of water, 0.4 to 1 percent of ethylene glycol, 0.3 to 1 percent of film-forming auxiliary agent, 0.005 to 1 percent of anti-freeze agent, 0.5 to 1 percent of graphite, 1 to 3 percent of hydroxyethyl cellulose and 0.20 to 1 percent of thickening agent. A preparation method of the sound-absorbing radiation protective paint comprises the steps of: (a) premixing, namely stirring 1 / 2 water, the sodium polycarboxylate dispersant, 1 / 2 defoamer, the mildew preventive, the thickening agent, the hydroxyethyl cellulose and the brightening agent at low speed to form colloidal solution; (b) dispersing and grinding, namely adding the titanium white, the barite, the graphite and the iron oxide into the colloidal solution and stirring the solution at high speed to prepare uniform sizing agent; (c) paint mixing, namely adding crylic acid emulsion, the film-forming auxiliary agent and the anti-freeze agent into the sizing agent, uniformly stirring the sizing agent, then dividing the porous modified starch into 1 to 5 parts, and adding the porous modified starch by 1 to 5 times into the mixture for low-speed and uniformly stirring the mixture; and (d) packaging the resulting product.

Description

technical field [0001] The invention relates to a coating for construction, in particular to a sound-absorbing and anti-radiation coating and a manufacturing method thereof. Background technique [0002] People and government departments pay more and more attention to the harm of noise pollution to people's health and daily life, and the sound absorption function of buildings is gradually increasing in many building functions. Sound-absorbing materials can not only improve the indoor sound quality environment, but also play a very important role in noise control. There are many kinds of building sound-absorbing materials. At present, the most widely used ones in my country are gypsum decorative sound-absorbing panels, glass wool decorative sound-absorbing panels, rock (mineral) cotton decorative acoustic panels, perlite decorative acoustic panels, polystyrene Foam plastic decorative sound-absorbing panels, metal decorative sound-absorbing panels, micro-perforated structure s...

AI Technical Summary

Problems solved by technology

Foamed polystyrene particles, as mentioned above, will release poisonous gas in case of fire. This coating has potential safety hazards. Moreover, the technical solution does not screen the light perlite selected, and the sound absorption effect is not ideal.

Patent CN 101081955A (Application No. 200710028446.5) discloses a light-weight sound-absorbing coating and its preparation method. The coating provides sound-absorbing effect by adding open-cell expanded perlite, but due to the rough surface and open pores of open-cell expanded perlite, High water absorption, low strength, brittle, poor compressive resistance, and easy weathering. After being made into a coating or sound-absorbing material, it is prone to cracks, hollowing, etc.

The sound absorption effect is not ideal if the paint film is too thin or less than 1mm thick

[0004] In addition, as we all know, long-term or frequent exposure to electromagnetic radiation will seriously damage people's health.

In the early days, people usually used lead plates for protection against radiation, but lead is soft and poisonous, and it is easy to creep after a long time. The protection construction procedure is complicated and expensive.

Generally, rays have strong penetrating power, and they can pass through walls and ceilings of buildings with ordinary thickness. Although the radiation intensity has been weakened, it still poses a certain threat to human health. Thickening, this method not only wastes building materials, but also takes up more effective space; at present, lead plates, barium cement, and composite protective plates are mostly used for radiation at home and abroad, such as Japanese Patent No. 64-6433, CN92 1 06491.8, CN 86 1 00457.4, Protective coatings such as CN 88 1 05952.8 and filled anti-radiation materials such as CN 90 1 06378.9 are used for radiation protection; the bonding performance between barium cement and the protective body is poor, and it is easy to crack and fall off; the production process of the composite protective board is complicated, and the gap between the boards is leaking. The line is also difficult to handle; the existing anti-radiation coatings and filled anti-radiation materials all contain the toxic and harmful substances lead and its compounds, volatile organic compounds and free formaldehyde restricted by national standards; in addition, the filled anti-radiation materials are filled in the wall In the middle of the body, the complete structure of the wall is destroyed, and there are potential safety hazards in the building. During the construction and use, if there are cracks or holes in the filling, it cannot be found by people, which is a potential hazard.

Protective paint such as CN 1 5632 17A, is used for wall surface decoration effect is poor