Nano-composite foam rope and preparation method thereof

Abstract

The invention discloses a nano-composite foam rope and a preparation method thereof. The nano-composite foam rope comprises the following raw materials by weight: 65% to 80% of nano-modified polypropylene, 5% to 11% of natural fiber, 2.5% to 6% of methyl propyl naphthyl phosphate, 4% to 10% of trimethyl oxalate acetate, 2% to 6% of a compound stabilizer, 0.2% to 0.7% of magnesium oxalate, 1% to 3%of a defoaming agent and 0.8% to 1.6% of an antioxidant. A surfactant is used for surface treatment of alkali-free glass powder to obtain modified alkali-free glass superfine powder, the modified alkali-free glass superfine powder is used for nano-modified filling of polypropylene to obtain nano-modified polypropylene, the rigidity is improved, toughness and dimensional stability are high, thermal expansion rate is low, melt strength of the nano-modified polypropylene is increased by 5-7 times, the nano-modified polypropylene has good low temperature toughness, and can withstand impact of lowtemperature of-30 DEG C; the preparation method is simple, the work efficiency is improved, the filled nano-filler is comparable with 5-time-filled ordinary packing in rigidity, cost is greatly reduced, and the prepared nano-composite foam rope has high strength, good toughness and long service life.

Description

Technical field [0001] The invention relates to the field of ropes, in particular to a nano composite foamed rope and a preparation method. Background technique [0002] Foam rope is a kind of plastic rope, the main component is polypropylene, which is a kind of thermoplastic resin made by polymerization of propylene. Compared with other thermoplastic resins, polypropylene has low density, high melting point, wide source and price. Low, excellent mechanical properties, good chemical stability and other characteristics, has become an indispensable basic raw material for packaging, light industry, construction, electronics, electrical appliances and automobiles. However, the molecular chain of ordinary polypropylene has a linear structure and the molecular weight distribution is relatively narrow, which leads to the disadvantages of low rigidity, poor heat resistance, large shrinkage, and low melt strength. In thermoforming processing, when the temperature is higher than the meltin...

AI Technical Summary

Problems solved by technology

However, the molecular chain of ordinary polypropylene is a linear structure, and the molecular weight distribution is relatively narrow, which leads to the disadvantages of low rigidity, poor heat resistance, large shrinkage, and low melt strength of polypropylene. In thermoforming processing, when the temperature is higher than the melting point After that, the melt strength and viscosity drop sharply, resulting in uneven wall thickness of the product during thermoforming, edge bending, shrinkage, and cell collapse during extrusion, foaming, etc. during extrusion, coating, and calendering. Applications of propylene in thermoforming, foaming, extrusion coating, blow molding, etc.

[0003] In order to overcome these problems, inorganic fillers are usually added, but conventional filler modification usually requires a large amount of addition, which often affects the molding and processing performance of the product, and also reduces the toughness of the material, and significantly increases the density of polypropylene. Thereby increasing the weight of product parts, and material recycling is difficult, which is not conducive to energy saving and environmental protection requirements