Composite gypsum board and its manufacturing method
A technology of gypsum board and gypsum powder, which is applied in the field of composite gypsum board, and can solve the problems that the technical performance and improvement of gypsum board cannot be realized.
Active Publication Date: 2022-03-11
雪峰创新(北京)科技有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although these methods have improved some local properties of gypsum boards, they are also unable to significantly improve the key technical properties of gypsum boards (such as flexural resistance, pressure resistance, water resistance, freeze-thaw resistance, etc.)
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-5
[0067] The raw material formula of the composite gypsum board is shown in Table 1 below. The manufacturing method is to mix the raw materials uniformly according to the proportioning ratio, and adjust to the required water content and pH; the raw material system is wet-molded under constant pressure (40MPa) to obtain a semi-cured wet Blank; drying and shaping the obtained semi-cured wet blank. The specific drying molding temperature and time are shown in Table 1 below.
[0068] Table 1 embodiment 1-5 material proportion and reaction condition of composite gypsum board (unit of measurement: parts by weight)
[0069]
[0070] The composite gypsum boards of Examples 1-5 were tested, and the results are shown in Table 2 below.
[0071] The performance parameter of table 2 embodiment 1-5 composite gypsum board
[0072]
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Abstract
The present invention relates to composite gypsum boards and methods for their manufacture. Composite gypsum board, which is prepared with hemihydrate gypsum powder and modified melamine resin as main raw materials; the modified melamine resin is made of raw materials comprising the following parts by weight: 170 parts of melamine, 400 parts of formaldehyde solution, 3 parts methyl monoethanolamide cocoate, 20 parts polyvinyl alcohol, 80 parts ethanol, 30 parts diethanolamine. The composite gypsum board prepared by using hemihydrate gypsum powder and modified melamine resin as main raw materials can significantly improve the strength of the gypsum board.
Description
technical field [0001] The invention relates to a composite gypsum board, and also provides a manufacturing method of the composite gypsum board. Background technique [0002] Gypsum board is a widely used light-weight, fire-resistant and flame-retardant inorganic board for building interior decoration. Its flexural strength is usually about 4-8 MPa, and its water absorption rate can reach 15% in 5 minutes. It has poor water resistance and low strength. Therefore, gypsum board is usually used for interior decoration, which restricts the wider application of gypsum board, such as outdoor decoration, veneer and so on. [0003] In order to further improve the performance of gypsum boards, one method is to carry out surface finishing on the basis of conventional gypsum boards to manufacture veneered gypsum boards. This technology is mature and well applied, but it still does not fundamentally solve the water resistance and Performance requirements such as high strength. In add...
Claims
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IPC IPC(8): C04B28/14C04B111/20
CPCC04B28/144C04B2201/50C04B2111/27C04B2201/20C04B2111/20C04B11/26C04B11/262C04B11/00C04B24/125C04B24/008C04B24/026C04B22/062C04B22/122C04B14/44C04B24/14C04B24/42
Inventor 黄建陈玉放白国峰靳焘陈卫敏曹立久康健张成君张新河孙笃唐印兰光松王衍庆毛金元王富斌张秀秀王俊东
Owner 雪峰创新(北京)科技有限公司