Magnesium cement fireproof board having excellent water-resistance and preparation thereof

A technology of fireproof board and magnesium cement, applied in the field of magnesium cement fireproof board, can solve the problems such as the inherent problems of magnesium oxychloride cement and increase the cost that cannot be fundamentally solved, and achieve excellent non-combustibility, no warping deformation, and low thermal expansion coefficient. Effect

Inactive Publication Date: 2008-08-27
李锦富
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The addition of additives increases the cost and solves some problems, but it cannot fundamentally solve the inherent problems of magnesium oxychloride cement, because the system of magnesium oxychloride cement has not changed

Method used

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  • Magnesium cement fireproof board having excellent water-resistance and preparation thereof

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Effect test

Embodiment 1

[0024] Embodiment 1: taking weight as a unit, pour 80 parts of magnesium sulfate and 1 part of tartaric acid into a blender, add quantitative water, stir, adjust the Pomi degree of magnesium sulfate and tartaric acid to be 26, add 85% light magnesium oxide 150 parts, 20 parts of perlite, 120 parts of heavy filler (heavy calcium carbonate), 22 parts of light filler (sawdust). Stir for 5 minutes, then discharge the material, and shape it on the fireproof board production line with double-layer 2-piece fiber mesh cloth. After it reaches a certain strength, it can be demoulded and cut.

Embodiment 2

[0025] Embodiment 2: taking weight as a unit, pour 80 parts of magnesium sulfate and 1 part of tartaric acid into a blender, add quantitative water, stir, adjust the Pomi degree of magnesium sulfate and tartaric acid to be 26, add 85% light magnesium oxide 150 parts, 12 parts perlite, 120 parts heavy calcium carbonate, 22 parts sawdust. Stir for 5 minutes, then discharge the material, and shape it on the fireproof board production line with double-layer 2 pieces of fiber mesh cloth. After it reaches a certain strength, it can be demolded and cut to produce magnesium cement fireproof board with excellent water resistance. plate. The product is detected by the test block, the flexural strength is >10mpa, the compressive strength is >25mpa, the softening coefficient is >0.9, the flame resistance is A grade, and there is no phenomenon of frosting and halogen return.

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Abstract

The invention reltes to a fireproof board, belonging to the technical field of building material, decorative material, traffic facility, fireproof product, abrasive, abrasive tool and wood furniture. According to the formula of the invention, a preparation method comprises adding 80 portions of magnesium sulfate and 1 portion of tartaric acid into a mixer, adding water of suitable amount, mixing and adjusting the Baume degree of the magnesium sulfate and tartaric acid to 26, adding 150 portions of 85% light magnesium oxide, 12 portions of perlite, 120 portions of heavy calcium carbonate and 22 portions of sawdust, mixing for 5min, emptying, shaping the materials on a fireproof board product line provided with two layers of dual fiber net bags, removing mould and cutting when the product reaches a suitable strength, to obtain the magnesium cement fireproof board with better water resistance. The inventive fireproof board has low thermal expansion factor, non warping deformation, softening factor higher than 0.9, non recurrent halogen, non frost mist, better freezing resistance and non combustibility.

Description

technical field [0001] The invention belongs to inorganic glass fiber reinforced plastics, and relates to materials used in the fields of building materials, decorative materials, transportation facilities, refractory products, abrasive abrasives, wood substitute furniture, etc., and particularly relates to a new material: a magnesium cement fireproof board with excellent water resistance. technical background [0002] Magnesium cement is a special kind of cement, which was invented by the Frenchman Sorrell in 1867, so it is also called cement by Sorrell. And because most of it is formed by the condensation of magnesium chloride and magnesium oxide, it is also called magnesium oxychloride cement. At the same time, it uses magnesium oxide as the main component, and people are used to calling them magnesium cement. Later, people used glass fiber to strengthen magnesium cement to make inorganic composite material, which is called inorganic glass fiber reinforced plastic. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B9/04C04B14/18
CPCC04B28/30C04B2111/27C04B2111/28C04B2111/29
Inventor 李锦富
Owner 李锦富
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