A kind of gypsum board and preparation method thereof
By adjusting the proportion and combination of raw materials for paper-surface gypsum board cores and using low-temperature calcined building gypsum powder and other materials, the problems of gypsum board absorbing, softening and mold in humid environments are solved, and high water resistance and mildew resistance are improved.
Patent Information
- Application Number
- CN202411805059.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-04-04
AI Technical Summary
Drywall is prone to absorb water, soften and mold in humid environments, and the prior art is difficult to effectively solve these problems.
A paper-surface gypsum board is used, and its core materials include low-temperature calcined building gypsum powder, water, glass fiber, modified starch, foaming agent, hydrophobic agent, anti-mold agent, aqueous resin, crystal form adjuster, water reducing agent and coagulation accelerator. By adjusting the proportion and combination of these raw materials, the water resistance and anti-mold properties of the gypsum board are improved.
The high water resistance and mildew resistance of gypsum board are achieved, and the mildew resistance level reaches level 2 or below. The surface water absorption is less than 160g/㎡ in 2 hours, and the water absorption rate is less than 8%, effectively avoiding softening and mold problems caused by water absorption.