Flame retardant polypropylene composition for salivating method sheet materials and manufacture method thereof

Abstract

The invention discloses a flame retardant polypropylene composition for salivating method sheet materials. The flame retardant polypropylene composition is characterized by consisting of the following ingredients in parts by mass: 100 mass parts of polypropylene, 30 to 50 mass parts of phosphoric flame retardant copolymers, 5 to 8 mass parts of additive flame retardants, 5 to 8 mass parts of tougheners, 1 to 5 mass parts of flame retardant synergistic agents and 0.1 to 1 mass part of antioxidants. A preparation method of the flame retardant polypropylene composition comprises the steps that: the phosphoric flame retardant copolymers are prepared; all ingredients of the composition are put into a mixing machine to be uniformly mixed, then, the melt extrusion is carried out by an extruding machine, in addition, the melt temperature is controlled to be 160 to 200 DEG C, the bar pulling and the grain cutting are carried out, and the flame retardant polypropylene composition for the salivating method sheet materials is prepared. The flame retardant polypropylene composition has good compatibility with polypropylene base bodies, the influence on the mechanical performance and the thermal performance of the material is small, and the flame retardant performance and the tearing resistance performance of the polypropylene material are particularly improved. The flame retardant polypropylene composition can be widely applied to the insulation manufacture in the fields of electronic appliances, office electric appliances, vehicles, instrument apparatuses and the like.

Description

technical field [0001] The invention belongs to macromolecular materials, and relates to a flame-retardant polypropylene composition for a salivation method sheet and a manufacturing method thereof. The flame retardant polypropylene composition of the invention can be widely used in the manufacture of insulating materials in the fields of electronic appliances, office appliances, vehicles, instruments and the like, which require high flame retardancy. Background technique [0002] Polypropylene (PP) is a semi-crystalline material with a density of 0.90 g / cm 3 ~0.91g / cm 3 , is the lightest kind of general-purpose plastics, has good mechanical and electrical properties and high-frequency insulation, hardly absorbs water, is not affected by humidity, and does not interact with most chemicals. The biggest disadvantage is that The tear performance is poor, and the modified polypropylene can be widely used in the automobile industry, home appliance industry, plastic pipe industr...

AI Technical Summary

Problems solved by technology

[0002] Polypropylene (PP) is a semi-crystalline material with a density of 0.90 g / cm 3 ~0.91g / cm 3 , is the lightest kind of general-purpose plastics, has good mechanical and electrical properties and high-frequency insulation, hardly absorbs water, is not affected by humidity, and does not interact with most chemicals. The biggest disadvantage is that Poor tearing performance, the modified polypropylene can be widely used in the automobile industry, home appliance industry, plastic pipe industry, mechanical equipment parts, etc.

Due to the defects of polypropylene materials, it is still difficult to meet certain application fields with high requirements for flame retardancy and tear performance. Therefore, research on various flame-retardant modifications of polypropylene is in the ascendant.

[0003] At present, my country uses new phosphate compounds as electron donors to get rid of aromatic esters, aliphatic esters, and ether compound electron donors covered by foreign patents. By adjusting the structure of phosphate compounds, the copolymerization performance of the catalyst and polypropylene Alloy chain structure, particle physical stacking structure, aggregate structure, rigidity and toughness, and a complete set of polypropylene alloy preparation technology and process with independent intellectual property rights have been established, which have been widely used in industrially produced products in flame-retardant polypropylene materials , commonly used halogen flame retardants (chlorinated or brominated flame retardants, such as tetrabromobisphenol A, decabromodiphenyl ether, brominated polystyrene, pentabromotoluene and hexabromocyclododecane, etc.) as external additions However, the use of such flame retardants has defects such as environmental pollution, low flame retardancy and poor tear strength of polypropylene sheets, and cannot meet the relevant directives issued by developed countries and regions such as the European Union (such as RoHS That is, "Instructions on the Restriction of Certain Hazardous Substances in Electrical and Electronic Equipment", REACH ("Regulations on Registration, Evaluation Authorization and Restriction of Chemicals", etc.) requirements for environmental protection technical barriers

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