Preparation process of shell powder coating

A preparation process, a technology of shell powder, which is applied in the field of coatings and can solve problems such as insufficient environmental protection

Inactive Publication Date: 2018-05-29
广东狮力德建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing shell powder on the market has the following disadvantages: the calcination temperature exceeds 850°C, and the chitin contained in the shell has been decomposed; the addition of organic synthetic rubber powder brings in organic volatiles such as formaldehyde, which is not environmentally friendly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation process of shell powder paint, comprising the following steps: (1) selection of shell raw materials: according to the size of the shell aperture, select offshore, mid-sea, and deep-sea shells and mix them according to the weight ratio of 1:1:0.5; (2) the acidity of the shells Washing: add the above-mentioned shells to 2% HCl solution and soak for 5 hours, and then wash them with water; (3) Alkaline washing of shells: Add the pickled shells to 2% NaOH solution and soak for 5 hours, then Wash with clear water and dry; (4) Calcination of shells: Put the dried shells into the calciner, control the calcining temperature at 300°C, and the calcining time is 8 hours; since the melting point of chitin is greater than 300°C, by reducing Calcination temperature, more chitin in the shells is retained; (5) Crushing of shells: put the calcined shells into a pulverizer for pulverization, and the pulverization fineness is less than 55 microns; (6) Pulverize the pulverized ...

Embodiment 2

[0017] A preparation process for shell powder coatings, comprising the following steps: (1) selection of shell raw materials: according to the size of shell pores, select offshore, mid-sea, and deep-sea shells and mix them according to the weight ratio of 3:3:2; (2) the acidity of the shells Washing: Add the above shells to 10% HCl solution and soak for 30 hours, then wash them with water; (3) Alkaline washing of shells: Add the pickled shells to 10% NaOH solution and soak for 30 hours, then Wash with clear water and dry; (4) Calcination of shells: put the dried shells into the calciner, control the calcining temperature at 350°C, and the calcining time is 8 hours; since the melting point of chitin is greater than 300°C, by reducing Calcination temperature, more chitin in the shells is retained; (5) Crushing of shells: put the calcined shells into a pulverizer for pulverization, and the pulverization fineness is less than 55 microns; (6) Pulverize the pulverized shells , put i...

Embodiment 3

[0019] A preparation process of shell powder paint, comprising the following steps: (1) selection of shell raw materials: according to the size of the shell aperture, select offshore, mid-sea, and deep-sea shells and mix them according to the weight ratio of 2:2:1; pickling of shells: Add the above shells to 5% HCl solution and soak for 24 hours, and then wash them with water; (3) Alkaline washing of shells: add the pickled shells to 5% NaOH solution and soak them for 24 hours, and then wash them with water (4) Calcination of shells: put the dried shells into the calciner, the calcining temperature is controlled at 315°C, and the calcining time is 8 hours; since the melting point of chitin is greater than 300°C, by reducing the calcining temperature, Keep more chitin in shells; (5) Grinding of shells: Put the calcined shells into the pulverizer for crushing, and the crushing fineness is less than 55 microns; (6) Put the crushed shell powder into dry powder Mixer, and add gluti...

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Abstract

The invention discloses a preparation process of shell powder coating. The preparation process of the shell powder coating comprises the following steps: selecting shell raw materials; (2) acid-washing the shells; (3) alkali-washing the shells; (4) calcining the shells: putting the aired shells into a calcining furnace, wherein the calcining temperature is controlled to 300 to 350 DEG C and the calcining time is 8 hours; (5) pulverizing the shells; (6) putting the pulverized shell powder into a dry powder stirring machine, adding sticky rice glue powder and stirring for 30 minutes to obtain the shell powder coating; (7) packaging the shell powder coating, to obtain a finished product. Offshore, middle sea and deep sea shells are selected as the raw materials, and more chitin in the shellscan be retained; the purely natural sticky rice pure glue powder is added, so that the shell powder coating is green.

Description

technical field [0001] The invention relates to a paint, in particular to a preparation process of shell powder paint. Background technique [0002] Shell powder is the powder of crushed shells, 95% of which is mainly composed of calcium carbonate, and a small amount of amino acids and polysaccharides. It can be used as a high-grade material for food, cosmetics and interior decoration. It is widely used in livestock and poultry feed and food calcium source additives, jewelry processing, desiccant, etc. Shell powder bio-coating is an emerging home decoration interior wall coating in recent years. It is one of the new applications of shell powder. Natural environmental protection is its most important advantage. The existing shell powder on the market has the following disadvantages: the calcination temperature exceeds 850°C, at which time the chitin contained in the shell has been decomposed; the addition of organic synthetic rubber powder brings in organic volatiles such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28C04B20/02C04B20/04
CPCC04B20/023C04B20/04C04B26/285C04B2111/00482C04B14/28
Inventor 叶晓娟
Owner 广东狮力德建材有限公司
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