Special halogen-free flame-retardant synergistic masterbatch for modification of polycarbonate resin and preparation method of halogen-free flame-retardant synergistic masterbatch

Abstract

The invention relates to the technical field of modification and processing of plastics, in particular to special halogen-free flame-retardant synergistic masterbatch for modification of polycarbonateresin and a preparation method of the halogen-free flame-retardant synergistic masterbatch. Multiple-compounded coated potassium aluminum 3-benzenesulfonylbenzenesulfonate is adopted as an inorganicflame retardant, and the halogen-free flame-retardant synergistic masterbatch comprises the compositions: in percent by mass, 10.0-15.0% of multiple-compounded coated potassium aluminum 3-benzenesulfonylbenzenesulfonate, 75.0-80.0% of methyl methacrylate-butadiene-styrene terpolymer (MBS), 3.0-5.0% of polyphenylmethylsiloxane, 2.0-3.0% of organic phosphate, 2.0-3.0% of styrene-acrylonitrile copolymer-coated polytetrafluoroethylene and 0.3-0.5% of a lubricant. When the prepared functional masterbatch is compared with traditional flame-retardant functional masterbatch, the heat resistance and thermal stability of potassium aluminum 3-benzenesulfonylbenzenesulfonate are improved significantly, benzenesulfonic acid functional groups for development of flame retardancy of potassium aluminum 3-benzenesulfonylbenzenesulfonate is protected effectively, and potassium aluminum 3-benzenesulfonylbenzenesulfonate is adaptive to a high processing temperature of polycarbonate resin, so that the flameretardant effect of potassium aluminum 3-benzenesulfonylbenzenesulfonate on the polycarbonate resin is improved more effectively.

Description

technical field [0001] The invention relates to the technical field of plastic modification processing, in particular to a special halogen-free flame retardant synergistic functional masterbatch for polycarbonate resin modification and a preparation method thereof. Background technique [0002] As an important engineering plastic, polycarbonate is widely used in industrial and consumer electronics, automobile and rail vehicle interior decoration and other fields. However, applications in these fields often require polycarbonate parts and components to have high flame retardancy to make them fire safe. The flame retardant modification of polycarbonate can be realized by adding a flame retardant and melt blending through a twin-screw extruder. Flame retardants can prevent plastics from being ignited and inhibit flame propagation, which can effectively improve the combustion resistance of plastics. According to the classification of flame retardant elements, flame retardants ...

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Problems solved by technology

[0004] The purpose of the invention is to: 3 –Potassium aluminum benzenesulfonylbenzenesulfonate has application defects such as poor high temperature thermal stability, weak interface adhesion, large loss of flame retardancy, low fluidity, and poor dispersion in the application process of halogen-free flame-retardant polycarbonate resin modification , and its thermal degradation due to powder friction in the process of twin-screw direct blending and extrusion, resulting in flame retardant performance and physical and mechanical decline, the present invention proposes a wall with flame retardant synergy and dense material Material pair 3 – Potassium aluminum benzenesulfonylbenzenesulfonate is coated with multiple composites, and then it is mixed with the corresponding flame retardant synergist and auxiliary agent at low temperature to prepare a halogen-free flame retardant for the modification of polycarbonate resin. Fuel efficiency functional masterbatch

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