Fireproof door core board and production process thereof

Abstract

The invention provides a fireproof door core board, and belongs to the technical field of fireproof doors. The fireproof door core board is prepared from the following raw materials of, in parts by weight, 80 parts-280 parts of cement, 0.2 part-8 parts of a foaming agent, 0.1 part-1 part of polypropylene fibers, 0 part-200 parts of an admixture, 140 parts-160 parts of water and 0 part-1 part of an early strength water reducing agent. The fireproof performance of the fireproof door core board reaches the standard, the environmental protection performance reaches the standard, the dry density value is not higher than 300 kg / m < 3 >, the tensile strength is not lower than 0.13 MPa, the drying shrinkage value is not higher than 0.5 mm / m, the water absorption rate (V / V) is 3%-5%, the carbonization coefficient and the softening coefficient are not lower than 0.9, and the fireproof door core board shows excellent use durability.

Description

technical field [0001] The invention belongs to the technical field of fire doors, and in particular relates to a fire door core board and a production process thereof. Background technique [0002] In modern buildings, fire doors are irreplaceable, and have irreplaceable significance for personnel escape. The fire door is to add fireproof material inside the door, so as to achieve the purpose of fire barrier. [0003] Conventional door core boards are mostly glass magnesium boards, and the formula of glass magnesium boards is mainly magnesium sulfate, magnesium chloride, magnesium oxide, and glass fiber. From the perspective of formula, there are many types of materials, and the chemical products are cementitious materials. The water effect is not good, the cost is high, and the products produced by these materials will be severely pulverized and cracked in the later stage, which has great quality hidden dangers. [0004] For this reason, the prior art provides an improve...

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Problems solved by technology

Based on the above analysis, the raw materials for the preparation of door core panels in the above-mentioned prior art are complex, the cost is relatively high, the market application is hindered, and there is room for further improvement in performance

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