Perlite fireproof thermal baffle and preparation method thereof

Abstract

The invention provides a perlite fireproof thermal baffle and a preparation method thereof. The preparation method comprises the following steps: mixing 25-50 parts by weight of expanded perlite, 10-30 parts by weight of inorganic fiber, 5-30 parts by weight of adsorbent, 0-10 parts by weight of additive, 2-8 parts by weight of starch, 1-3 parts by weight of filter aid and water to obtain a slurry; and draining the slurry, carrying out compression molding and drying to obtain the perlite fireproof thermal baffle. Compared with the prior art, by using starch as a binder, the addition amount of the starch and the volume density can be regulated to manufacture perlite fireproof thermal baffles with different strengths, thereby enhancing the pressure resistance. The thermal baffle is free of alkali metal ions; and when the thermal baffle is used as a fire door core board, no phenomenon of moisture absorption can occur. Meanwhile, the optimal combination of the inorganic fiber and adsorbent ensures no phenomenon of floating of the expanded perlite in water, so that the perlite can be uniformly distributed in the board, thereby ensuring the smooth and non-cracking surface of the wet blank in the transport process.

Description

technical field [0001] The invention belongs to the technical field of fireproof and thermal insulation materials, and in particular relates to a perlite fireproof heat insulation board and a preparation method thereof. Background technique [0002] Building energy conservation is the main content of implementing the national environmental protection and energy conservation policies, and is an important part of implementing the sustainable development of the national economy. Under the guidance of a series of national energy-saving policies, regulations, standards and mandatory provisions, the energy-saving work of residential construction in my country has been deepened, and energy-saving standards have been continuously improved. Some traditional building insulation materials are no longer suitable for future development. [0003] Energy-saving materials commonly used in building external insulation can be divided into organic insulation materials and inorganic insulation ...

AI Technical Summary

Problems solved by technology

However, when it is used as a fire door core board, multiple splicing is required, the overall performance is poor, and the production efficiency is low, and the perlite board cannot be embossed during use as a fire door core board

[0005] The Chinese patent with the publication number CN102808463A discloses a method for processing light-weight perlite boards for fireproofing and heat preservation. It uses perlite, fireproofing glue, curing agent, water repellent and desiccant to mix semi-dry materials into molds for compression molding, but the production The produced perlite board is brittle and cannot be embossed when used as a fire door core board, and the size can only be determined according to the mold during the production process, resulting in low production efficiency

[0006] The Chinese patent with the publication number CN101718122A discloses a filament glass fiber reinforced hydrophobic perlite heat insulation board and its manufacturing method. The introduction of continuous fiber glass yarn during the molding process can ensure the integrity of the wet blank during the transmission process. There is no fracture phenomenon, but the actual operation process is difficult, and it cannot be guaranteed that the glass fiber yarn is evenly distributed inside the perlite board during the actual operation process

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