Halogen-free flame retardant hydrolysis-resistant polypropylene resin and processing technology of manufacturing film by utilizing same

Abstract

The invention discloses a halogen-free flame retardant hydrolysis-resistant polypropylene resin. Polypropylene resin, a fire retardant and an antioxidant are mixed into the polypropylene resin which is high-viscosity co-polypropylene, the fire retardant is a compounded system of tris cyanurate and tripolycyanamide, the antioxidant is a hindered phenol or phosphite ester antioxidant, and the specific gravities of the polypropylene resin, fire retardant and antioxidant components are 89.5%, 10% and 0.5% respectively; and halogen-free flame retardant hydrolysis-resistant polypropylene resin which is uniformly mixed is added into a co-rotating twin-screw extruder and then added into a three-roller calendered sheet extrusion moulding machine, so that the polypropylene film is obtained. The halogen-free flame retardant hydrolysis-resistant polypropylene resin and the manufactured film produce less pollution, the processability of a three-roller calendaring and moulding process is guaranteed, the UL-94V-0 flame retardant grade can be achieved by a film product with the thickness of more than 0.3mm, the water resistance is good, and good high-voltage breakdown resistance, folding resistance and transparency of polypropylene are maintained.

Description

technical field [0001] The invention relates to the field of a high-voltage breakdown-proof and flame-retardant insulating film used for making electronic appliances, in particular to a halogen-free flame-retardant and hydrolysis-resistant polypropylene resin and a processing technology for making it into a film. Background technique [0002] Polypropylene is widely used in household appliances, building components, interior decoration materials, and automotive parts due to its excellent processability, chemical resistance, and mechanical strength. However, polypropylene itself is extremely flammable. Improvement, many occasions require that polypropylene must be flame retardant, so a lot of research has been carried out, by adding various organic and inorganic flame retardants to polypropylene to achieve the purpose of flame retardancy. [0003] Flame-retardant polypropylene film has good folding resistance and high-voltage breakdown resistance, so it is widely used in the ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a halogen-free flame-retardant and hydrolysis-resistant polypropylene resin and the processing technology for making it into a film; to solve the proble