Gypsum plate with harmful substance eliminating function and preparation method thereof

A harmful substance and gypsum board technology, which is applied in the field of functional gypsum board and its preparation, can solve the problems of poor effect, limited amount of formaldehyde removal, high price, etc., and achieve the effect of simple production process, fast elimination of formaldehyde, and good elimination effect

Inactive Publication Date: 2008-07-09
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the products currently on the market and patented technology products have the problems of high price and poor effect. The elimination of formaldehyde in a certain period of time is limited, and the persistence of the effect is poor.
[0005] For example, the formaldehyde scavenger disclosed in the patent application literature with the publication number CN1404891A is expensive because of the use of hydrazide compounds; a formaldehyde scavenger is disclosed in the invention patent application literature with the publication number CN1526470A, and its effect is not very satisfactory. , the formaldehyde elimination rate is only 78%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of the preparation of the present invention for plasterboard with the function of eliminating harmful substances

[0037] 1) Prepare raw materials according to the following proportions by weight:

[0038] Distilled water 569kg

[0039] Phosphoric acid (concentration 85%) 80kg

[0040] Citric acid 20kg

[0041] Urea 240kg

[0042] Melamine 30kg

[0043] Ammonium chloride 20kg

[0044] Zirconium Carbonate 3kg

[0045] Polyvinyl alcohol (1799) 30kg

[0046] Acetyl ethyl acetate 0.6kg

[0047] Titanium dioxide 5kg

[0048] Tourmaline powder 5kg

[0049] 2) Add all the phosphoric acid, citric acid, urea and melamine in the above raw materials into the reactor filled with distilled water of 50% of the total amount of distilled water in sequence, stir evenly, heat up to 95°C, and react until the pH of the material=6.0- 6.5.

[0050] 3) Add the remaining distilled water and all the ammonium chloride, zirconium carbonate and polyvinyl alcohol, stir ev...

Embodiment 2

[0062] (1) Preparation of the preparation of the present invention for plasterboard with the function of eliminating harmful substances

[0063] 1) Prepare raw materials according to the following proportions by weight:

[0064] Deionized water 500kg

[0065] Formic acid (concentration 85%) 3kg

[0066] Gallic acid (concentration 92%) 18kg

[0067] Urea 150kg

[0068] Dicyandiamide 20kg

[0069] Ammonium phosphate 30kg

[0070] Zirconium Carbonate 2kg

[0071] Carboxymethylcellulose 4kg

[0072] Acetyl ethyl acetate 0.1kg

[0073] Titanium dioxide 30kg

[0074] Tourmaline powder 30kg

[0075] 2) All the formic acid, gallic acid, urea and dicyandiamide in the above raw materials are sequentially added to the reactor equipped with 50% deionized water in the total amount, stirred evenly, heated to 90° C., and reacted to the pH=6.0-6.5.

[0076] 3) Add the remaining deionized water and all the ammonium phosphate, zirconium carbonate and carboxymethyl cellulose, stir eve...

Embodiment 3

[0088] (1) Preparation of the preparation of the present invention for plasterboard with the function of eliminating harmful substances

[0089] 1) Prepare raw materials according to the following proportions by weight:

[0090] Water 650kg

[0091] Acetic acid (concentration 95%) 150kg

[0092] Formic acid (concentration 85%) 10kg

[0093] Urea 350kg

[0094] Dicyandiamide 30kg

[0095] Ammonium sulfate 40kg

[0096] Zirconium Carbonate 2kg

[0097] Polyacrylamide 6kg

[0098] Acetyl ethyl acetate 2.2kg

[0099] Titanium dioxide 17kg

[0100] Tourmaline 17kg

[0101] 2) Add all the acetic acid, formic acid, urea, and dicyandiamide in the above raw materials into the reactor filled with 50% water in sequence, stir evenly, heat up to 100°C, and react until the pH of the material=6.0 -6.5.

[0102] 3) Add the remaining water and all the ammonium sulfate, zirconium carbonate and polyacrylamide, stir evenly, lower the temperature to 50° C., and keep the temperature for ...

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Abstract

The invention provides a functionality gypsum plate for eliminating hazardous material and the preparing process thereof. The functionality gypsum plate of the invention comprises a functionality gypsum plate and a hazardous material elimination agent, wherein the hazardous material elimination agent comprises raw materials according to proportion by weight that dispersive medium is 500-650 parts, acids compound is 20-160 parts, polyamine compound is 100-400 parts, salt compound is 10-80 parts, waterborne resin is 1-60 parts, ethyl acetoacetate is 0.1-5 parts, titanium dioxide is 5-30 parts and tourmaline is 5-30 parts. The dispersive medium of the gypsum plate of the preparation employed by the invention is water not organic solvent, products obtained by synthesis reaction and resultant produced by reacting with hazardous materials of formaldehyde, benzene and the like are non-poisonous materials, secondary pollution can not be caused after usage, and the producing technique is simple and convenient in use.

Description

technical field [0001] The invention relates to a functional gypsum board and a preparation method thereof, in particular to a functional gypsum board capable of eliminating harmful substances and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, decoration, purchase of new furniture, and purchase of cars have become common things in people's lives. Coatings and various wood-based panels are often used in large quantities in decoration and furniture manufacturing. Coatings often contain benzene and other organic volatiles. Wood-based panels such as plywood, blockboard, medium-density fiberboard, and particle board are mostly made of formaldehyde-based adhesives, mainly urea-formaldehyde resin adhesives. There is a problem of formaldehyde release, and often become the main source of indoor air pollution. In addition, some other decorative materials, such as wall coverings and carpets, also use adhesives...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/04C04B26/28C04B24/12C04B22/06C04B14/04
Inventor 李建章周文瑞赵金平
Owner BEIJING FORESTRY UNIVERSITY
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