Antistatic halogen-free flame retardation polypropylene sheet and making method thereof

Abstract

The invention discloses an antistatic halogen-free flame retardation polypropylene sheet. The sheet comprises an antistatic layer, a flame retardation layer, a pure polypropylene layer, a flame retardation layer and an antistatic layer, wherein the pure polypropylene layer is made of an extrusion grade pure polypropylene material. The flame retardation layer of the antistatic halogen-free flame retardation polypropylene sheet has a flame retardation performance by adding a phosphorus-nitrogen flame retardant; and the antistatic layer realizes an antistatic performance by coating a conductive polymer solution, so the antistatic halogen-free flame retardation polypropylene sheet has the advantages of high flame retardation and good antistatic performance, and can be widely used in the electron industry.

Description

technical field [0001] The invention belongs to the field of composite plastic sheets, and in particular relates to an antistatic halogen-free flame-retardant polypropylene sheet and a preparation method thereof. Background technique [0002] Halogen-containing polymers or flame-retardant mixtures combined with halogen-containing flame retardants have excellent flame-retardant properties and have been widely used as flame-retardant materials. However, when a fire occurs, such halogen-containing flame-retardant materials will produce a large amount of smoke and toxic and corrosive hydrogen halide gas, causing secondary hazards. Halogen-free flame retardant material is to add halogen-free flame retardant to the material, this material does not volatilize and does not produce corrosive gas when burned. Halogen-free flame retardants are mainly phosphorus compounds and metal hydroxides, and there are also silicon-based flame retardants and nitrogen-based flame retardants. These ...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN200810218610.3 discloses a halogen-free flame-retardant polypropylene composite insulating sheet, which adopts a three-layer composite structure. The flame retardant grade is gradually increased from HB, V-2, V-1 to V-0; the test standard of V-2 grade is: after two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds; burning things may fall

However, the flame retardant performance of this patent has been improved, and the improvement of antistatic performance is not mentioned; moreover, the flame retardant, an inorganic powder substance, is added to the three layers of the structure, which will lead to a decrease in the overall physical properties of the sheet.

[0005] The existing technology generally achieves antistatic and antistatic properties by adding inorganic conductive particles such as carbon black and graphene, so generally it can only be made into black, which has caused great limitations to its use

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