Non-bittern swelling flame-proof polypropylene containing porous nickel phosphate and preparation method thereof

Abstract

The invention provides a halogen-free expanding flame-retarded polypropylene containing porous nickel phosphate and a preparing way for the polypropylene, which is characterized in that, the invention contains expanding fire retardant complexed by tetramethylolmethane: ammonium polyphosphate by mass 5.3 swung dash 8.2%:10.7 swung dash 16.3% or tetramethylolmethane: melamine ammonium polyphosphateby mass 5.3 swung dash 8.2%:10.7 swung dash 16.3%, also contains porous nickel phosphate. The total mass of each component is: polypropylene 75-80%, complexed expanding fire retardant 16-24.5%, porous nickel phosphate 0.5-4%, which is a porous structure in hole diameter 8-13. As containing porous nickel phosphate, the expanding fire retardant can greatly reduce the addition of the expanding fireretardant, and reduce the influence from the expanding fire retardant on the mechanical properties such as tensile and fracture strength, etc. of materials, improve obviously the fire resistance of polypropylene, solve the molten drop of polypropylene when it is burning; and the production and the use of the polypropylene are very convenient.

Description

Technical field: [0001] The invention belongs to the technical field of halogen-free intumescent flame-retardant polypropylene, in particular to polypropylene containing an intumescent flame retardant and porous nickel phosphate and a preparation method thereof. Background technique: [0002] According to "Modified Polypropylene New Materials" (edited by Zhao Min, Gao Jungang, etc., Chemical Press, September 2002), polypropylene itself is a flammable material, its oxygen index is only 17.0-18.0%, and the carbonization rate It is low and produces molten droplets when burning, so it is required to be flame-retardant modified in many applications. At present, the flame retardant of polypropylene is mainly used to add flame retardants at home and abroad. According to "Applied Surface Science" (Applied Surface Science, 120:14, 1997) and "Combustion Science" (J Fire Flam 2:97, 1971), the halogen-free additive flame retardant that has been used and can be used for flame retardant ...

AI Technical Summary

Problems solved by technology

[0003] Polypropylene treated with intumescent flame retardants or intumescent flame retardants and synergists such as zinc borate, zeolite, and organic montmorillonite has low-smoke, non-toxic and certain resistance to solvent droplets, but the flame-retardant effect It is still not ideal, and the drop resistance needs to be improved, and due to the large amount of flame retardant added, the mechanical properties of the material such as tensile strength and breaking strength will decrease

[0004] According to the "Journal of the American Chemical Society" (J.Am.Chem.Soc.125:1309, 2003), porous nickel phosphate is a kind of good molecular sieve material, containing NiO 6 Octahedron and PO 4 The tetrahedron forms a skeleton structure with a 24-membered ring channel structure with a pore diameter of It has good stability, and nickel itself is a good catalyst. At present, researchers mainly pay attention to its application prospects in adsorption, ion exchange, especially catalysis, but the research on porous nickel phosphate in flame retardancy has not been reported so far.

Images