Antibacterial breathable plastic masterbatch and preparation method and application thereof

Abstract

The invention relates to antibacterial breathable plastic masterbatch and a preparation method thereof. The masterbatch includes, by weight, 15-25% of metallocene linear low-density polyethylene, 50-70 parts of low density polyethylene, 5-8 parts of isotactic polypropylene, 3-6 parts of a dimethylsiloxane-diphenyl siloxane block copolymer, 40-48 parts of inorganic micropowder, 2-5 parts of nanometer bamboo-fragrance charcoal micropowder, 0.2-0.4 part of polyphthalamide, 0.1-0.2 part of a silicate silver-loaded inorganic antibacterial agent, 0.5-2 parts of glyceryl trimyristate, 0.3-0.8 part ofstearyl alcohol, 0.1-0.5 part of oleamide, 0.5-1 part of an antioxidant, 1-1.5 parts of liquid paraffin and 1-2 parts of glycerol monostearate. The masterbatch has excellent mechanical properties, integrates antibacterial performance and breathability, and has environmentally friendly raw materials, low preparation energy consumption, low cost and high single output. A plastic film processed fromthe masterbatch is of extremely high application value in the fields of diapers, sanitary napkins, medical surgical gowns, and the like.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to an antibacterial breathable plastic masterbatch, a preparation method and application thereof. Background technique [0002] Highly air-permeable polyethylene cast film has the characteristics of large air permeability (and impermeable), soft texture, good mechanical properties, hygiene and environmental protection, and has been widely used in medical care products, hygiene products, daily products, food packaging, electronic Electrical packaging, mildew-proof building walls and other fields. The special resin used to produce highly air-permeable polyethylene cast film has strict requirements on the particle size and particle size distribution range of inorganic fillers in the production process, and has high requirements for the design of the formula system and the control of the processing process. Therefore, although Many units have carried out research and developm...

AI Technical Summary

Problems solved by technology

Antibacterial additive inorganic powder antibacterial masterbatch, because it is a pure powder, surface modification treatment must be carried out in the production process, the production process is complicated, and the dispersion degree of the powder in the breathable film substrate is low. When effective, the heavy metal content in the film is much higher than that of the film using reagent-type antibacterial additives, which is not conducive to environmental protection and cost control

[0004] Chinese patent 201511004117.8 discloses a special masterbatch for polyolefin breathable film, including 80%-85% of heavy calcium carbonate powder, 1%-2% of coupling agent, 1%-2% of PE wax, 5%-10% of linear low-density polyethylene resin, 6%-12% of low-density polyethylene resin. Although the invention reduces the cost of raw materials by greatly increasing the content of inorganic fillers, its ductility and tensile strength are also Weakened, easy to break the film surface during processing

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