Fireproof door core plate and fireproof timber door

Abstract

The invention discloses a fireproof door core plate and a fireproof timber door. The fireproof door core plate is prepared from the following raw materials in parts by weight: 10-20 parts of chitosan, 5-15 parts of magnesium-aluminum spinel, 15-25 parts of modified quartz powder, 4-8 parts of sepiolite, 3-7 parts of ammonium metavanadate, 2-4 parts of zirconium tetrafluoride, 4-8 parts of sodium borohydride, 2-6 parts of polyvinyl chloride, 5-15 parts of andalusite powder, 10-20 parts of nano-silica, 4-6 parts of hydroquinone, 3-5 parts of polyvinyl acetate, 2-4 parts of decabromodiphenyl ether, 15-25 parts of polypropylene fiber, 5-7 parts of starch sodium octenylsuccinate, 8-12 parts of mica powder, 1-5 parts of a fireproof aid, 1-5 parts of an anti-cracking agent, 1-3 parts of a water reducer and 1-3 parts of a water repellent. A preparation method of the fireproof door core plate comprises the steps of uniformly crushing the raw materials, and carrying out smelting and formation, so as to obtain the fireproof door core plate. The fireproof door core plate is located between a fireproof timber door panel and a backboard. The fireproof door core plate is low in production cost, light in mass and high in strength, has excellent flame retardance and thermal insulation property and sound insulation property. A preparation process of the fireproof timber door prepared from the fireproof door core plate is simple, and the large-scale production can be realized.

Description

technical field [0001] The invention belongs to the field of wooden door manufacturing, and in particular relates to a fireproof door core board and a fireproof wooden door. Background technique [0002] The fire door core board is a key raw material in the fire door structure. The performance of the fire door depends on the performance and quality of the door core board to a large extent. But so far, the relevant domestic standards for fire door core panels are still blank, and manufacturers only follow the descriptions of fire door filling materials in "Fire Door GB12955-2008", except that the materials must meet the requirements of flammability and non-combustibility (A1 grade ) and smoke toxicity AQ1 two mandatory conditions, materials need to meet environmental protection requirements, use of degradable materials, there are no clear regulations on more materials and physical and chemical indicators, process indicators, which makes the door panel manufacturers in the pro...

AI Technical Summary

Problems solved by technology

However, the quality problems that have appeared on the magnesite foam door core board for a long time are mainly concentrated in the following aspects: (1) brine and moisture return, rusting the door board; (2) board body pulverization, mudification, strength attenuation; ( 3) Strong water absorption, serious glue consumption, resulting in increased glue costs, and even door panel degumming and hollowing; (4) Poor fire resistance, high loss rate of core material quality, resulting in fire door inspection failing to meet the fire resistance time limit requirements