A kind of methyl octabromoether flame retardant polystyrene composite material and preparation method thereof

Abstract

The invention discloses a methyl octabromoether flame-retardant polystyrene composite material and a preparation method thereof. The methyl octabromoether flame-retardant polystyrene composite material comprises, in parts by weight: polystyrene 70‑ 90 parts, 1‑10 parts of methyl octabromoether, 0.2‑5 parts of brominated flame retardant synergist, 1‑10 parts of phosphorus nitrogen flame retardant, 1‑10 parts of lubricating and dispersing agent, 1‑20 parts of filler. The invention also discloses a preparation method thereof. After the components are uniformly stirred, they are extruded through an extruder, and the temperature of the extruder is 170-210°C. In the present invention, methyl octabromoether is used to replace the commonly used polystyrene flame retardant hexabromocyclododecane, and phosphorus nitrogen flame retardants are added as a synergistic effect, so that the prepared polystyrene composite material has excellent flame retardancy In addition to flame performance, it has excellent mechanical properties, with tensile strength of 31.2-34.6MPa, bending strength of 42.3-47.0MPa, and limiting oxygen index of 30-39%.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a methyl octabromo ether flame-retardant polystyrene composite material and a preparation method thereof. Background technique [0002] Polystyrene PS is a general-purpose thermoplastic resin, which is widely used in building insulation and other fields because of its low price and easy processing. At present, the most widely used polystyrene resins are expandable polystyrene EPS and extruded polystyrene foam XPS. Due to their excellent thermal insulation performance, low price, simple and easy-to-implement molding equipment, expanded polystyrene materials It is widely used in the fields of building exterior wall insulation and so on. However, because polystyrene is entirely composed of carbon and hydrogen elements, it is extremely flammable in nature, and its limiting oxygen index is only 18%, which is a flammable material. In addition, the amount of smoke is large when burnin...

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Problems solved by technology

[0006] CN109180881A prepares polystyrene flame retardant material by free radical polymer method. This method has complex process and cannot complete the processing and molding of flame retardant polystyrene composite material on the extruder. The process is complex and not easy to popularize, so it is not suitable for downstream production Manufacturer processing application

Magnesium hydroxide and decabromodiphenyl ether are used to prepare low-smoke flame-retardant polystyrene, and decabromodiphenyl ether is a non-environmentally friendly flame retardant. On February 9, 2017, the European Union published regulations (EU) in the official gazette In 2017 / 227, the flame retardant - decabromodiphenyl ether (DecaBDE) was officially added to REACH Regulation (EC) No 1907 / 2006 Appendix XVII, becoming a controlled substance in Article 67 of REACH Appendix XVII, and its application has been greatly limited

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