Preparation method of fireproof door filling material
A technology for filling materials and fire doors, which is applied in the field of fire protection to prevent the spread of heat and flames, suppress the generation of open flames, and reduce the concentration
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[0020] In an embodiment of the present invention, a method for preparing a fire door filling material comprises the following components by weight: intumescent flame retardant 0.2-0.6, hexabromocyclododecane 10-30, cosolvent 2-9, Zinc borate 15-25, color masterbatch 0.1-3, hydroxide 20-40, antimony trioxide 1-10, flame retardant polyether 15-20, coupling agent 0.05-0.5, expandable graphite 10-20, wood Powder 8-15, titanium dioxide 5-10, foam sheet 5-10, polyamide PA 50-70, carbon forming agent 15-20, borax 12-18, molybdenum trioxide 1-5.
[0021] The intumescent flame retardant is APP.
[0022] The expandable graphite coating is applied once or multiple times in the mold and then dried and demolded before being formed.
[0023] The char-forming agent is one or more of pentaerythritol, glycerol, and ethylene glycol; the stabilizer is one or more of barium stearate, lead stearate, and calcium stearate.
[0024] The auxiliary solvent is bis(2-ethylhexyl) phthalate or bis(2-prop...
Embodiment 1
[0030] Embodiment 1: the preparation of flame-retardant polyether
[0031]A 1.5-meter-high, cylindrical airtight reaction vessel, an arc generator is installed in the reaction vessel, and a microwave generator is arranged at a height of 1.2m on the wall of the reactor. Before the reaction started, the container was filled with nitrogen and carbon dioxide (volume ratio 50:1) after vacuuming, so that the pressure in the container was 80MPa.
[0032] The catalyst is a mixture of 0.6 parts by mass of methanol, 0.5 parts by mass of silicone oil, 0.3 parts by mass of sodium silicate, and 0.1 parts by mass of sodium bicarbonate.
[0033] Rare earth bromide, butylene oxide, catalyst, and polytetrafluoroethylene with mass parts of 1, 0.5, 1.5, and 1.5, respectively, under the reaction conditions of temperature of 560°C, pressure of 75MPa, voltage of 15,000 volts, and microwave frequency of 200GHz, Obtained after 2 hours of reaction.
Embodiment 2
[0034] Embodiment 2: the preparation of flame-retardant polyether
[0035] Equipment and pressure control are the same as in Example 1.
[0036] The catalyst is a mixture of 0.7 parts by mass of methanol, 0.6 parts by mass of silicone oil, 0.5 parts by mass of sodium silicate, and 0.2 parts by mass of sodium bicarbonate.
[0037] The mass parts of cerium bromide, butylene oxide, catalyst, and polytetrafluoroethylene are 1, 0.5, 2.0, and 1.5 respectively. Obtained after 3 hours of reaction.
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