Halogen-free fire-retardant foam and preparation method thereof

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...

AI Technical Summary

Problems solved by technology

[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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