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Waterproof and dampproof gypsum board and preparation method thereof

A gypsum board and moisture-resistant technology, used in the field of waterproof and moisture-resistant gypsum board and its preparation, can solve the problems of poor waterproof and moisture-proof performance, reduced impact toughness, low reliability, etc., and achieve excellent waterproof and moisture-resistant, and impact toughness is unchanged. , the effect of prolonging the service life

Inactive Publication Date: 2017-11-24
HEFEI OUSHIJIA ELECTRICAL & MECHANICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of these types of gypsum boards is their poor waterproof and moisture-proof performance. Therefore, this kind of gypsum boards will loosen and fall off after being used for a period of time in moisture and humid indoor environments, resulting in lower mechanical strength and reduced impact toughness. Damage to the original shape not only affects the indoor beautification environment, but also causes hidden dangers to people's personal safety. It has the disadvantages of low reliability, poor safety and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A waterproof and moisture-resistant gypsum board, the following raw materials are prepared for use: 70kg of calcined desulfurized gypsum, 20kg of Faku clay, 20kg of turbidite powder, 10kg of polyimide fiber, 10kg of sodium bentonite, 6kg of silicone resin polyether emulsion, dimethyl 4kg of sulfoxide, 2kg of methyl pentachlorostearate, 15kg of starch binder, 1kg of waterproofing agent, 1kg of activator, 1kg of foaming agent and 1kg of water reducing agent;

[0023] Wherein, the above-mentioned starch binder is made from the following ingredients: 25kg of cornstarch, 40kg of water, 8kg of acrylic acid, 3kg of dodecanethiol, 3kg of sodium benzoate, 1kg of sodium tetraborate and 10kg of diatomaceous earth; it is made through the following steps: Mix cornstarch, water, acrylic acid and dodecanethiol, then heat to 75°C for gelatinization; place the gelatinized product in a 60Co-γ-ray radiation field for radiation graft polymerization, and receive a dose of 0.5KGy; Add sodium...

Embodiment 2

[0032] A waterproof and moisture-resistant gypsum board, the following raw materials are prepared for use: 80kg of calcined desulfurized gypsum, 25kg of Faku clay, 25kg of turbidite powder, 15kg of polyimide fiber, 15kg of sodium bentonite, 8kg of silicone resin polyether emulsion, dimethyl 6kg of sulfoxide, 4kg of methyl pentachlorostearate, 20kg of starch binder, 3kg of waterproofing agent, 2kg of activator, 3kg of foaming agent and 2kg of water reducing agent;

[0033] Wherein, the above-mentioned starch binder is made from the following ingredients: 25kg of cornstarch, 40kg of water, 8kg of acrylic acid, 3kg of dodecanethiol, 3kg of sodium benzoate, 1kg of sodium tetraborate and 10kg of diatomaceous earth; it is made through the following steps: Mix cornstarch, water, acrylic acid and dodecanethiol, and then heat to 80°C for gelatinization; place the gelatinized product in a 60Co-γ-ray radiation field for radiation graft polymerization, and receive a dose of 1.0KGy; Add so...

Embodiment 3

[0042] A waterproof and moisture-resistant gypsum board, the following raw materials are prepared for use: 90 kg of calcined desulfurized gypsum, 30 kg of Faku clay, 30 kg of turbidite powder, 20 kg of polyimide fiber, 20 kg of sodium bentonite, 10 kg of silicone resin polyether emulsion, dimethyl 8kg of sulfoxide, 6kg of methyl pentachlorostearate, 25kg of starch binder, 5kg of waterproofing agent, 3kg of activator, 5kg of foaming agent and 3kg of water reducer;

[0043] Wherein, the above-mentioned starch binder is made from the following ingredients: 25kg of cornstarch, 40kg of water, 8kg of acrylic acid, 3kg of dodecanethiol, 3kg of sodium benzoate, 1kg of sodium tetraborate and 10kg of diatomaceous earth; it is made through the following steps: Mix cornstarch, water, acrylic acid and dodecanethiol, and then heat to 85°C for gelatinization; place the gelatinized product in a 60Co-γ-ray radiation field for radiation graft polymerization, and receive a dose of 1.5KGy; Add so...

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Abstract

The invention discloses a waterproof and dampproof gypsum board and a preparation method thereof, and relates to the technical field of novel building materials. The gypsum board is prepared from the following raw materials in parts by weight: calcined desulphurization gypsum, Faku clay, laumontite powder, polyimide fiber, sodium bentonite, silicone polyether emulsion, dimethyl sulfoxide, methyl chlorostearate, a starch adhesive, a waterproofing agent, an activator, a foaming agent and a water reducer. The preparation method of the waterproof and dampproof gypsum board comprises the steps: adding water into the raw materials stage by stage, uniformly mixing and aging the raw materials, and performing pouring, preforming and drying operation, thus obtaining the waterproof and dampproof gypsum board. By improvement and optimization of the production raw materials and the process, a finished product board is high in waterproof and dampproof property, so that reduction of the mechanical strength of the board and deterioration of an indoor environment can be prevented; the service life of the gypsum board is prolonged; and the gypsum board is higher in reliability and safety and suitable for being popularized and applied.

Description

technical field [0001] The invention relates to the technical field of new building materials, in particular to a waterproof and moisture-resistant gypsum board and a preparation method thereof. Background technique [0002] Gypsum board is a material made of building gypsum as the main raw material. It is a building material with light weight, thinner thickness, convenient processing, sound insulation, heat insulation and fire resistance. It is one of the new lightweight panels that are currently being developed. Gypsum boards have been widely used in interior partition walls, wall cladding panels (replacing plastering layers), ceilings, sound-absorbing panels, ground floor panels and various Decorative panels, etc. At present, the gypsum boards on the market mainly include paper gypsum boards, decorative gypsum boards, and gypsum hollow strips. The biggest disadvantage of these types of gypsum boards is their poor waterproof and moisture-proof performance. Therefore, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/27
CPCC04B28/144C04B2111/00293C04B2111/27C04B14/10C04B14/047C04B16/0691C04B14/104C04B24/42C04B24/16C04B24/005C04B24/38C04B22/14C04B14/04C04B24/00C04B24/18C04B2103/65C04B22/142C04B22/068C04B24/2641C04B22/0046
Inventor 孔令翠
Owner HEFEI OUSHIJIA ELECTRICAL & MECHANICAL EQUIP CO LTD
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