Novel composite perlite board for fire prevention and heat insulation and manufacturing method thereof

Abstract

The invention relates to a novel composite perlite board for fire prevention and heat insulation and a manufacturing method thereof. The main components comprise perlite, sodium silicate solution, water repellent agent, aluminium hydroxide, calcium carbonate, aedelforsite, phosphoric acid, magnesium oxide, white carbon black aqueous solution; according to parts by weight, 100 parts of perlite are taken as a benchmark and the component comprises: 50-70 parts of sodium silicate solution, 3-5 parts of water repellent agent, 5-11 parts of aluminium hydroxide, 3-6 parts of calcium carbonate, 7-12 parts of aedelforsite, 4-7 parts of phosphoric acid, 4-8 parts of magnesium oxide, 1-3 parts of white carbon black and 100-160 parts of water. The technology provided in the invention can effectively solves the defects that in the market fireproof door core scatters or deforms and twists in case of burning by mass fire; meanwhile, the material manufactured by the technology has excellent fireproofing and heat-insulating capabilities, the composite perlite board with a thickness of 42mm alone can meet the requirements of GB 12955-2008 on fire prevention and heat insulation; meanwhile, the fireproof door core is also provided with advantages such as low cost, adjustable density, relatively good intensity and toughness, high production efficiency, certain waterproof capacity and the like.

Description

technical field [0001] The invention relates to a formula of a novel composite perlite plate and a preparation method thereof. It is a new type of fire-proof and heat-insulating material, which has both excellent mechanical strength and good thermal insulation and sound insulation capabilities. It is mainly used for fire door cores, and can also be used in buildings where fire protection and heat insulation are required. technical background [0002] Due to the increasing degree of urbanization in our country and the gradual increase of urban population density, the buildings are built higher and higher, so the pressure on fire protection is very high. Without reliable fire protection products and strict regulatory measures, fires in tall buildings and even skyscrapers can have devastating consequences. Fire doors have been installed in fire exits for a long time, which has played a role in protecting the safety of personnel and property. Fire doors are mainly composed of...

AI Technical Summary

Problems solved by technology

[0003] Before 2009, aluminum silicate fibers were mostly used as fireproof and heat insulation materials for fireproof door core materials. Aluminum silicate fibers released toxic smoke during the fire prevention process. Fire Fighting Work of Firefighters

[0005] At present, the main fire door core materials on the market are mainly porous air-entrained magnesium oxide / magnesium chloride board (referred to as porous air-entrained magnesium oxychloride board) and perlite board. Their advantages and disadvantages are as follows: porous air-entrained magnesium oxychloride board has strength Higher, smooth surface, excellent aging resistance, easy to bond with the door leaf, etc., the formation of 5.1.8 phase between magnesium oxide and magnesium chloride is the main reason for the high strength

But it also has the following disadvantages: (1) Production is greatly affected by seasons

When the temperature is low and the humidity is high, it takes a long time to form the 5.1.8 phase; when the temperature is high, the curing is too fast, the heat generation is large, and heat dissipation is difficult, resulting in poor performance

So the quality is not easy to control

(2) Ordinary magnesium oxide / magnesium chloride boards will start to decompose at a low temperature of 230°C, destroying the 5.1.8 phase, resulting in collapse when the flame burns, so it is difficult to ensure fire protection and heat insulation reliability

(3) Thick plates must be used to meet the requirements of Class A doors

But the disadvantages are: (1) The strength is poor, and it can be broken with a little force by hand.

(2) Shrinkage and deformation are very serious when burning

[0007] From the above survey and analysis, it can be seen that the fire door core materials currently on the market mainly have the characteristics of unreliable burning in a large fire (collapse or distortion), poor fireproof and heat insulation (A1.50 (Class A) fire doors must use at least 50 mm thick fire door core) etc.

It cannot play an effective protective role in fire, so it is necessary to develop fire-proof and heat-insulating materials with better performance

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