High-strength fiber cement composite board and preparation method thereof

Abstract

The invention provides a high-strength fiber cement composite board and a preparation method thereof. The method comprises the following steps: implanting quantum energy into natural water so as to change a water molecular structure and form quantum-state micro-molecular water; adding the cement and the water implanted with the quantum energy into a stirring tank, and uniformly stirring to mix into cement paste; adding plant fibers into a stirring mill, spraying the cement paste to the plant fibers in the stirring mill which is started at the same time according to a ratio, and performing grinding and stirring to form slurry; paving the stirred and ground slurry into a board blank with the upper part and the lower part clamped in glass fiber cloth, rolling and forming, and curing to obtainthe fiber cement composite board. According to the method, the strength of the fiber cement composite board is improved by changing the phase structure, specifically, under the condition that raw materials are not increased, the internal binding force is enhanced by changing the phase structure of the board, and the strength of the magnesium fiber cement composite board is improved.

Description

technical field [0001] The invention belongs to the field of building material engineering and relates to a method for increasing the strength of a cement composite board, in particular to a preparation method for improving the strength of a fiber cement composite board and a fiber cement composite board prepared by the method. In the method, the strength of the fiber cement composite board is improved by changing the phase structure, specifically including increasing the strength of the magnesia fiber cement composite board by changing the phase structure of the board and enhancing the internal bonding force without adding raw materials, In this way, high-performance and low-cost demolition-free formwork can be produced. Background technique [0002] At present, the domestic demand for prefabricated buildings continues to grow. Existing inorganic fiber composite cement boards include: Portland fiber cement pressure boards, calcium silicate boards, and magnesium cement plan...

AI Technical Summary

Problems solved by technology

[0005] 1) At present, the magnesium cement fiber composite board is mainly reinforced by glass mesh cloth. If the 20mm thick high-performance non-demolition-free formwork is produced, the amount of glass fiber cloth will be greatly increased, which will increase the cost; or add resin reinforcement, which will lose inorganic materials. nature, otherwise the strength is low;

[0006] 2) At present, the most advanced double-shaft double-roller mixer is used for mixing. During production, all materials are put into the mixer and mixed. This method belongs to parallel compounding. When adding crushed plant fibers and mixing together, unreacted Part of the blending agent solution is absorbed by the plant fibers, and the reaction is out of balance, resulting in a low probability of forming a strong crystal phase due to factors such as the late return of the magnesium oxychloride board, the blooming of the magnesium oxysulfide board, and the reduction in the strength of the basic magnesium sulfate board. Poor stability and other issues

The result of this stirring and mixing method is that the fiber is covered with a layer of slurry. When the board is under stress, the coated fiber is easy to slip and cannot bear the force at the same time as the base material, and the board is easy to crack.