Method for preparing fast-foamed door core

Abstract

The invention relates to a method for preparing a fast-foamed door core, which comprises the following steps: mixing 30-40 parts of polyvinyl alcohol with 100-140 parts of water so as to obtain glue; putting the glue in a high-speed shearing machine, adding 100-120 parts of sulphate aluminium cement and 2-3 parts of a heptaminol corrosion inhibitor, and carrying out high-speed shearing and stirring under the conditions that the shearing speed is 6000-8000 RPM and the shearing time is 5-10 min; transferring the obtained object to a high-speed stirrer, and adding 8-12 parts of white cement, 3-6 parts of hydroxypropyl methyl cellulose, 1-1.3 parts of a nonorganic aluminum salt water-proofing agent, 0.5-1.5 parts of aluminium-magnesium silicate, 1.5-1.9 parts of RTV organic silica gel and 0.5-2 parts of a high-alumina cement foaming agent, and stirring the obtained mixture for 10-15 min at a stirring speed of 1000-1500 r / min; and finally, adding 3-5 parts of PVA short threads, stirring the obtained object for 5-10 min at a stirring speed of 800-1000 r / min, discharging the obtained product to a mold in which 10 dm3 wire cages are fully pilled uprightly and foursquarely, standing the obtained product in the mold until the obtained product is molded by curing, taking out the obtained object, and drying the obtained object until the moisture content is 12%.

Description

technical field [0001] The invention relates to a fast foaming door core and a preparation method thereof. Background technique [0002] The traditional halogen foam door core has poor fireproof performance, easy to catch fire, return halogen, easy to carbonize and deform at high temperature, and release harmful gas during high temperature heating, which seriously affects its service life, safety performance and stability. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a fast foaming door core with light weight, high strength, excellent fire resistance, no harmful gas when heated at high temperature, stable performance, safe use and long service life and a preparation method thereof. [0004] The technical solution adopted in the present invention is: a fast foaming door core, characterized in that it includes: 30-40 parts of polyvinyl alcohol, 100-120 parts of sulfoaluminate cement, and amino ...

AI Technical Summary

Problems solved by technology

[0002] The traditional halogen foam door core has poor fireproof performance, easy to catch fire, return to halogen, easy to carbonize and deform at high temperature, and release harmful gas during high temperature heating, which seriously affects its service life, safety performance and stability