Halogen-free fire-retardant foam and preparation method thereof
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A foam and flame retardant technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of low environmental protection factor, air pollution, human injury, etc., and achieve the effect of reducing surface energy, reducing combustibility, and flame retardancy excellent effect
Inactive Publication Date: 2019-03-19
青岛世林新海绵有限公司
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[0004] In the prior art, you can refer to the Chinese invention patent application document with the application publication number CN107856373A, which discloses a multi-layer conductive foam with flame retardant properties, including a foam body and a conductive cloth, and the conductive cloth is wrapped in the foam body The outer surface of the foam body includes a first conductive adhesive layer, a foam layer, a metal layer, and a second conductive adhesive layer that are sequentially arranged from bottom to top. The foam layer includes a multi-layer split foam layer. There is a reinforcing layer between the body foam layers, and the outer side of the conductive cloth is provided with a heat-insulating layer and a flame-retardant layer in sequence from the inside to the outside; However, due to the use of halogen-containing flame-retardant coatings, when the conductive foam in this case burns, it is easy to produce a large amount of toxic smoke. After the human body inhales it, the personnel will cause harm to the human body, and the air pollution is serious. Environmental protection low coefficient
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preparation example 1
[0037] Preparation example 1: Modified aluminum hydroxide is prepared by the following method: dry aluminum hydroxide at 100°C for 1 hour, then put it in a mixer and stir at 2000 rpm; For the silane coupling agent of 1:0.02, the silane coupling agent dissolved in toluene is evenly sprayed on the aluminum hydroxide being stirred, stirred at 200 rpm for 10 minutes, and then stirred at 2000 rpm for 10 minutes Minutes, take out and dry;
[0038] Wherein the silane coupling agent refers to vinyltriethoxysilane.
preparation example 2
[0039] Preparation example 2: Modified aluminum hydroxide is prepared by the following method: dry aluminum hydroxide at 105°C for 1.2 hours, then put it in a mixer and stir at 2300 rpm; For the silane coupling agent of 1:0.02, spray the silane coupling agent dissolved in toluene evenly on the stirring aluminum hydroxide, stir at 230 rpm for 15 minutes, and then stir at 2300 rpm for 15 minutes , take out to dry.
[0040] Wherein the silane coupling agent refers to vinyltriethoxysilane.
preparation example 3
[0041] Preparation example 3: Modified aluminum hydroxide is prepared by the following method: dry aluminum hydroxide at 110°C for 1.5 hours, then put it in a mixer and stir at 2500 rpm; For the silane coupling agent of 1:0.02, the silane coupling agent dissolved in toluene is evenly sprayed on the aluminum hydroxide being stirred, stirred at 250 rpm for 20 minutes, and then stirred at 2500 rpm for 20 minutes minutes, remove to dry.
[0042] Wherein the silane coupling agent refers to vinyltriethoxysilane.
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Abstract
The invention discloses a halogen-free fire-retardant foam and relates to the technical field of foam material preparation. According to the technical scheme, the halogen-free fire-retardant foam is characterized by including, by weight part, 52-62 parts of toluene diisocyanate, 45-55 parts of polypropylene glycol, 45-55 parts of polyether polyol, 4.1-5.1 parts of water, 0.1-0.2 part of polyurethane catalyst, 0.1-0.5 part of organo-tin catalyst, 0.8-1.6 parts of foam stabilizer, 6-10 parts of auxiliary foaming agent and 8-12 parts of halogen-free fire-retardant agent. The halogen-free fire-retardant foam solves the problem that foams are inflammable, high in smokiness and prone to producing toxic and hazardous gas during combustion; the halogen-free fire-retardant agent can improve the fire resistance of the halogen-free fire-retardant foam and ensure that the halogen-free fire-retardant foam can be low in smokiness and free from toxic and hazardous gas during combustion.
Description
technical field [0001] The invention relates to the technical field of foam material preparation, more specifically, it relates to a halogen-free flame-retardant foam and a preparation method thereof. Background technique [0002] Foam is divided into PU foam, anti-static foam, conductive foam, EPE, anti-static EPE, PORON, CR, EVA, bridging PE, SBR, EPDM, etc. A series of features such as reliability. [0003] In the prior art, you can refer to the Chinese invention patent document with the authorized announcement number CN103772778B, which discloses a mildew-resistant and antistatic CR foam and its preparation method, including the following components in parts by weight: neoprene rubber 50 ~70 parts, silicon powder 4~8 parts, sepiolite 3~6 parts, dicumyl peroxide 4~7 parts, nano zinc oxide 3~6 parts, plasticizer A7~11 parts, foaming agent 4 parts ~8 parts, 1~3 parts of anti-aging agent, 2~5 parts of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, 0.5~2 parts...
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