Flame-retardant plastic woven bag and preparation process thereof

Abstract

The invention discloses a flame-retardant plastic woven bag. The flame-retardant plastic woven bag is prepared from the raw materials in parts by weight: 70 to 90 parts of polypropylene resin particles, 20 to 25 parts of polytetrafluoroethylene particles, 20 to 25 parts of flame-retardant master batch, 10 to 15 parts of nano calcium carbonate, 4 to 5 parts of dimethicone, 3 to 4 parts of couplingagent, 0.5 to 1 part of antioxidant, and 0.5 to 1 part of nano CrB6H6 clusters. The invention also discloses a preparation process of the plastic woven bag. The preparation process comprises the stepsof mixing, drying, extruding, forming a film, drawing wires, reeling, weaving, forming a bag and the like. The flame-retardant plastic woven bag of the invention adopts the polypropylene resin as a base material to be mixed with the polytetrafluoroethylene and the flame-retardant master batch, so that the plastic woven bag has excellent flame-retardant performance, the flame-retardant performanceconforms to the standard of the coal industry, the plastic woven bag can be widely used for packaging a chemical product, ores, chemical fertilizer, cement and food, and can also store flammable substances and combustibles; and the preparation process of the invention is simple, and by reasonably controlling the parameters such as temperature, time, shrinkage ratio and the like, the woven bag ishigh in tensile strength and good in falling performance.

Description

technical field [0001] The invention belongs to the technical field of plastic woven bags, and in particular relates to a flame-retardant plastic woven bag and a preparation process thereof. Background technique [0002] Most of the plastic woven bags on the market today are made of polypropylene (PP), which has been the fastest-growing major thermoplastic, especially in fiber and filament, film extrusion, and injection molding processing. Polypropylene's excellent flow properties and wide range of flow rates, combined with other unique polymer properties, give it excellent processability. The lower flow rate can meet the processing requirements of extruded tape, tape filament and monofilament, etc., and can also make the finished product have tensile strength and low elongation, while maintaining sufficient transverse integrity, so that the winding machine guide device The splitting and dusting conditions are kept to a minimum. Main features: non-toxic, tasteless, low den...

AI Technical Summary

Problems solved by technology

[0003] Ordinary polypropylene woven bag raw materials are blended with polypropylene base material and inorganic fillers such as calcium carbonate. Due to the poor compatibility between polypropylene base material and inorganic fillers, the amount of inorganic fillers is less, resulting in The softening temperature of the raw material is low, so it can only be used for material packaging below 100°C

The flame-retardant plastic woven bags currently on the market are basically anti-aging types, that is, to prevent the plastic from continuing to produce thermal oxygen aging at high temperatures, thereby prolonging the service life of plastic products, but it cannot improve the temperature resistance of woven bags.