Glass fiber and magnesium cement board with excellent water resistance

Abstract

The invention discloses a glass fiber and magnesium cement board with excellent water resistance, which is composed of the following raw materials in parts by weight: 83-102 parts of light burned magnesia powder, 45-52 parts of anhydrous magnesium sulfate, 31-38 parts of magnesium chloride hexahydrate, 5-10 parts of styrene-butadiene latex, 3-8 parts of bamboo fiber, 5-10 parts of sawdust, 4-7 parts of fly ash, 7-11 parts of glass beads 4-8 parts of graphite powder, 5-10 parts of perlite, 10-16 parts of diatomaceous earth ore powder and a proper amount of pure water. The invention solves the defects of the glass fiber and magnesium cement board such as slightly poor waterproofing performance, moisture absorption and halogen return, cracking deformation, insufficient strength and the like,increases the flexibility and durability of the plate, and can keep the strength, crystal form and quality of the plate unchanged in the state of being soaked in water, thereby improving the water resistance and strength, and has good popularization prospect.

Description

technical field [0001] The invention relates to the technical field of decorative materials, in particular to a glass magnesium plate with excellent water resistance. Background technique [0002] Glass magnesium plate (commonly known as magnesium oxide plate) is a ternary system of magnesium oxide, magnesium chloride, and water, which is made by configuring and adding modifiers. It is a magnesium cementitious material with stable performance. It is a new type of non-combustible decorative material compounded with lightweight materials as fillers for reinforcing materials. Due to its excellent performance, it can be widely used as building materials such as wall panels, ceiling panels, fireproof panels, waterproof panels, etc. It can replace wooden plywood to make wall skirts, window panels, door panels, furniture and other interior decoration appliances, and can also be used as a blend according to needs. Paint, clear water paint, and can be processed into various types of...

AI Technical Summary

Problems solved by technology

However, poor water resistance is a defect that hinders the development of glass magnesium board. Due to the structural characteristics of hydration products, the board is easy to return to halogen, warp and deform when used in a humid environment, which limits the scope of use and service life of glass magnesium board.

Poor water resistance is manifested in: the strength of general magnesium oxychloride cement products is reduced by 70%-80% after soaking in water for 28 days