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Synthesis of phosphorus flame retardant and flame retardant BDP PPO / HIPS Alloy

Author: ZengZhi
Tutor: GaoShanJun
School: Wuhan University of Technology
Course: Materials Science
Keywords: Bisphenol A bis (diphenyl phosphate ) Polyphenylene oxide / high impact polystyrene alloy Flame retardant Melamine cyanurate Modified kaolin
CLC: TQ314.248
Type: Master's thesis
Year: 2011
Downloads: 284
Quote: 2
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Abstract

Polyphenylene oxide (PPO) is the U.S. General Electric Company (GE) in the mid 1960s, the development of thermoplastic resins, belonging to five common engineering plastics. As has excellent physical and mechanical properties, heat resistance and electrical insulation polyphenylene ether, there is a high viscosity, poor mobility, more sensitive to the gap and other defects, generally need to be modified. Usually a modified polyphenylene ether is a polyphenylene ether and polystyrene in particular, high impact polystyrene blend. Polyphenylene ether flame retardant properties, self-extinguishing, but high-impact polystyrene is flammable materials, the two are combined so that the material is flame retardant significantly reduced, and therefore it must be added to the appropriate flame retardants flame retardant meet the requirements. There are currently used halogenated flame retardants and phosphorus-based flame retardants. Halogen flame in the combustion process generates a lot of smoke and corrosive gases, and even produce highly toxic substances two ah Britain, the European Union some countries have enacted laws prohibiting the use of such flame retardants. Phosphate used as a flame retardant polymer has a long history, with the continuous development of flame retardant research, phosphate ester flame retardants have come from a single class to polyphosphate transition. Especially two-phosphate oligomer, a symmetrical structure, relatively high molecular weight, and high phosphorus content, its plasticity, flame resistance, thermal stability better than ordinary phosphate. Such flame good compatibility with the polymer, so it has been widely used. Bisphenol A bis (diphenyl phosphate) (BDP) is double phosphate flame retardant oligomers an outstanding representative of the product has been produced abroad, while the domestic is still in the development stage, there is no industrial products. Firstly, environmental protection and efficient synthesis of phosphorus-based flame retardant bisphenol A bis (diphenyl phosphate) (BDP). To find the most suitable synthetic route and reaction conditions, and improved methods and post-treatment processes to improve energy efficiency and raw material utilization so as to industrial production scale preparation. After the BDP Add to PPO / HIPS alloy to improve the flame retardancy showed that BDP flame retardant efficiency of the alloy good mechanical properties of the material loss is small and can improve processing performance alloys; subsequently used nitrogen-based and The other inorganic flame retardants cheaper price on the PPO / HIPS alloy retardant study found that these two non-halogen flame retardant efficiency of materials and the general impact properties of the material greater impact negative performance materials processing can not be neglected. In order to improve the way the above two flame retardant efficiency, and finally using a complex way with fire-retardant, inorganic nitrogen-based flame retardants and phosphorus-based flame retardants with mixed use, experimental results show that the use of complex impedance ways to make the flame burning efficiency greatly improved, but compared to simply using phosphorus flame retardants material also has a cost advantage. More important is the use of phosphorus flame retardant compound and a way to reduce nitrogen-based and inorganic flame retardants on the mechanical properties and processing performance loss. Considering the optimal way for the modified kaolin retardant compound BDP.

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CLC: > Industrial Technology > Chemical Industry > Molecular compound Industries ( polymer industry ) > Raw materials and auxiliary materials > Synthetic polymer compound > Additives > Flame retardants
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