High-strength anti-decrepitation fireproof heat-insulating plate

Abstract

The invention discloses a high-strength anti-decrepitation fireproof heat-insulating plate which is applied to occasions of cable fireproof plugs, building fireproof partitions, fireproof doors, ventilation pipelines, and the like and belongs to the technical field of fireproof materials. The high-strength anti-decrepitation fireproof heat-insulating plate comprises the following raw materials: pearlite powder as a heat-insulating material, titanium pigment as a whitening agent, plastic short fibers as anti-decrepitation materials, magnesium oxychloride cement as a binder and 3-20 layers of alkali glass fiber cloth as a reinforcing material and comprises the following raw materials in percent by weight: 0.1-10 percent of plastic short fibers, 40-50 percent of magnesite (the content of MgO is larger than 80 percent), 35-40 percent of magnesium chloride aqueous solution with the concentration of 23 percent, 3-15 percent of perlite powder and 1-10 percent of titanium powder. By adopting the technical scheme, the high-strength anti-decrepitation fireproof heat-insulating plate has the advantages of strong strength, good anti-decrepitation performance, excellent fireproof performance and excellent high temperature resistance.

Description

【Technical field】 [0001] The invention relates to a fire-proof and heat-insulating board, in particular to a high-strength anti-burning and explosion-resistant fire-proof and heat-insulating board, which belongs to the technical field of fireproof materials. 【Background technique】 [0002] At present, it is widely used in cable fireproof sealing, building fireproof partition, fireproof door, ventilation duct, and some fireproof heat insulation boards used in steel structure fireproofing. Most of them use magnesium oxychloride cement as binder and medium-alkali glass fiber cloth as reinforcing material. production. This is because the fireproof heat insulation board containing magnesium oxychloride cement is non-combustible, the structure of magnesium oxychloride cement is stable at room temperature, and the acid and alkali resistance is good. The fireproof heat insulation board bonded by multi-layer medium-alkali glass fiber cloth and magnesium oxychloride cement is also ve...

AI Technical Summary

Problems solved by technology

This is because the fireproof heat insulation board containing magnesium oxychloride cement is non-combustible, the structure of magnesium oxychloride cement is stable at room temperature, and the acid and alkali resistance is good. The fireproof heat insulation board bonded by multi-layer medium-alkali glass fiber cloth and magnesium oxychloride cement is also very strong, but its disadvantages are: 1. Magnesium oxychloride cement has a large amount of crystal water, and its molecular structure is 5Mg ( Oh) 2 · MgCl 2 ·8H 2 O, can also be written as 5MgO MgCl 2 13H 2 O, so at high temperature or after encountering a flame, the crystallization water in the molecular structure will be separated to generate a large amount of high-pressure water vapor. Because the water vapor cannot escape, the fireproof and heat shield board will burst, and the flame will make it It completely loses its fireproof performance and heat insulation performance, and in severe cases, it will even injure people and equipment

2. Later, some technicians added a large amount of wood fibers in the process of making fireproof heat insulation boards. Because the wood fibers were carbonized after encountering flames, they could absorb water vapor, thus solving the problem of burning and explosion of fireproof heat insulation boards. However, due to the addition of A large number of wood fibers lead to a significant reduction in the strength of the fireproof heat insulation board, which has certain limitations in its use. The fireproof heat insulation board will also have product defects and scrapping problems during transportation and installation.

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