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High-strength water-resistant type desulfurized gypsum board and preparation method thereof
The invention discloses a high-strength water-resistant type desulfurized gypsum board and a manufacturing technique, and belongs to the technical field of gypsum board. The high-strength water-resistant type desulfurized gypsum board solves the problem that the desulfurized gypsum board manufactured with the existing technology is non-dense in microstructure, bad in tenacity and bad in water resistance. The main components of the desulfurized gypsum board mainly comprises desulfurized gypsum, swelling agent, phenolic resin, propylene carbonate, silane coupling agent and polymer emulsion and water of which solid content is 0-10%. The parepartion method of the desulfurized gypsum board comprises the steps that the desulfurized gypsum is modified through the phenolic resin firstly, and then thermo-compression formation is conducted on the modified desulfurized gypsum dry powder for 1 min to 5 min in the state that the pressure ranges from 5 MPa to 20 MPa, and the temperature ranges from 90 DEG C to 200 DEG C; finally, the molded desulfurized gypsum board is soaked into the polymer emulsion for 10 min to 120 min, and the soaking temperature ranges from 25 DEG C to 70 DEG C. The desulfurized gypsum board is excellent in compressive strength, in breaking strength and in water-resistant performance.
High-strength water-resistant type desulfurized gypsum board and preparation method thereof
The invention discloses a high-strength water-resistant type desulfurized gypsum board and a manufacturing technique, and belongs to the technical field of gypsum board. The high-strength water-resistant type desulfurized gypsum board solves the problem that the desulfurized gypsum board manufactured with the existing technology is non-dense in microstructure, bad in tenacity and bad in water resistance. The main components of the desulfurized gypsum board mainly comprises desulfurized gypsum, swelling agent, phenolic resin, propylene carbonate, silane coupling agent and polymer emulsion and water of which solid content is 0-10%. The parepartion method of the desulfurized gypsum board comprises the steps that the desulfurized gypsum is modified through the phenolic resin firstly, and then thermo-compression formation is conducted on the modified desulfurized gypsum dry powder for 1 min to 5 min in the state that the pressure ranges from 5 MPa to 20 MPa, and the temperature ranges from 90 DEG C to 200 DEG C; finally, the molded desulfurized gypsum board is soaked into the polymer emulsion for 10 min to 120 min, and the soaking temperature ranges from 25 DEG C to 70 DEG C. The desulfurized gypsum board is excellent in compressive strength, in breaking strength and in water-resistant performance.
High-strength water-resistant type desulfurized gypsum board and preparation method thereof
WU QISHENG (author) / ZHU ZHEYU (author)
2015-09-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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