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Wall scraping gypsum powder and its production process

A technology of gypsum powder and waste gypsum, which is applied in the field of wall scraping paint for interior and exterior walls, can solve the problems of unsatisfactory gelled film-forming substances, difficulty in promotion, and poor coagulation effect, and achieve good coagulation effect, enhanced physical and chemical properties, easy sanding effect

Inactive Publication Date: 2007-06-06
利文海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned literature discloses that the wall putty powder contains gypsum powder, the coagulation effect of the gypsum powder is poor without treatment, and some coagulated gelling film-forming substances are not ideal, and some have high costs, and it is difficult to popularize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Crush 1,000 kg of natural gypsum or chemical waste gypsum into particles below 80 mesh, then put it in a kiln, and calcinate at a temperature of 180-230°C for 4 hours, add 5-6 kg of water-retaining agent methylcellulose after firing , Adhesive modified corn starch 3-10 kg, retarder citric acid 2-5 kg, suspending agent kaolin 2-10 kg and calcium carbonate powder 500 kg, mix well, and grind into 300 mesh fine powder, then Get Scraping Gypsum Powder Products.

Embodiment 2

[0031] Crush 1,000 kg of natural gypsum or chemical waste gypsum into particles below 80 mesh, then put it in a kiln, and calcinate at 250-300°C for 3 hours, add water retaining agent carboxymethyl cellulose 2-5 kg, 2-5 kg ​​of binder polyvinyl alcohol, 3-7 kg of retarder sodium tripolyphosphate, 2-10 kg of suspending agent kaolin and 300 kg of calcium carbonate powder, mix well, and grind into 350 mesh fine powder, The wall scraping gypsum powder product can be obtained.

Embodiment 3

[0033] Crush 1,000 kg of natural gypsum or chemical waste gypsum into particles below 80 mesh, then put it in a kiln, and calcinate at 230-320°C for 3 hours, add water retaining agent carboxypropyl cellulose 2-5 kg, 3-10 kg of adhesive polyacrylate, 5-10 kg of retarder borax, 20-50 kg of suspending agent attapulgite and 600 kg of calcium carbonate powder, mix well and grind into 400-mesh fine powder , You can get the wall scraping gypsum powder product.

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PUM

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Abstract

The present invention provides one kind of wall scraping paint with gypsum as main material and its production process. The wall scraping paint is produced with natural gypsum or chemical gypsum, water retaining agent, adhesive, retarding agent, suspending agent and calcium carbonate powder. The production process includes crushing natural gypsum or chemical gypsum to fineness smaller than 80 mesh, calcining in a kiln at 180 -400 deg.c for 2-4, mixing with water retaining agent, adhesive, retarding agent, suspending agent and calcium carbonate powder, and milling into 250-600 mesh fine powder. The wall scraping paint is scraped to wall and has excellent anticracking capacity, high waterproof property, no pollution and other advantages.

Description

technical field [0001] The invention relates to a building coating, in particular to a scraping coating for interior and exterior walls with gypsum powder as the main raw material and a production method thereof. Background technique [0002] Traditional building wall scraping paint (putty) is mainly based on inorganic minerals such as double fly powder, talcum powder (SiO 2 MgO Fe 2 o 3 CaO), light calcium carbonate, etc. as the main raw materials, organic polymers such as polyvinyl alcohol or phenolic resin, polypropylene, polycarbonate, polyfluorine, unsaturated polyester resin as the film-forming substance, putty curing depends entirely on polymerization Thin film. Generally, building putty has low bonding strength and large shrinkage, and is generally only suitable for construction on relatively flat walls. If the thickness is too large, it is easy to crack, and there are low construction efficiency, slow drying, and long construction period. On-site preparation i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B14/28C04B24/38C04B24/28C04B22/16
CPCC04B28/142C04B28/14
Inventor 利文海黄怡斌熊文学郭庭民
Owner 利文海
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