Special material for manufacturing biodegradable antibacterial breathable membrane and preparation method thereof

Abstract

The invention discloses a special material for manufacturing a biodegradable antibacterial breathable membrane and a preparation method thereof. The preparation method comprises the following steps of: adopting a jet mill to crush and grade 35-50 parts of heavy calcium carbonate, drying till the water content is less than or equal to 0.3%, adding 0.5-3 parts of surface active agent and 0.5-2 partsof activating agent, and fully reacting at a temperature of 110-130 DEG C; then adding 0.5 part of rare-earth antibacterial agent, 0-0.5 part of antioxidant and 0.5-3 parts of processing additive, mixing uniformly, then discharging, using the jet mill for milling and grading, finally adding 45-60 parts of biodegradable material and using a dual-screw extruder to extrude and granulate. The specialmaterial and the preparation method disclosed by the invention have the beneficial effects that the special material for the antibacterial breathable membrane is prepared by adopting methods of two-time surface modification and two-time jet milling and grading and utilizing the biodegradable material, the prepared breathable membrane product has the characteristics of good dispersity and uniformpore-diameter distribution and the like, can be completely biodegraded after being discarded, and has the advantages that the petroleum resources can be saved and the environmental pollution can be reduced and the like.

Description

technical field [0001] The invention relates to a special material for manufacturing a biodegradable antibacterial breathable film and a preparation method thereof, belonging to the technical field of polymer / inorganic powder composite material processing. Background technique [0002] Breathable film, also known as waterproof and breathable microporous film, is a new material developed in the past ten years and is widely used in many fields such as hygiene materials, clothing, medical treatment, agriculture, and food packaging. It is characterized by breathability and impermeability, and its pore size is about 0.01-10 μm. It can only pass through water vapor molecules with a particle size of about 0.4nm, but cannot pass through raindrops or water droplets and other large-size substances. It is mainly used in medical hygiene and personal care Supplies, such as disposable diapers, women's sanitary napkins, etc. At present, the breathable film products on the market generally...

AI Technical Summary

Problems solved by technology

At present, the breathable film products on the market generally use polyolefin (PE) as the carrier, add ultra-fine fillers to extrude and cast, and obtain a plastic film after longitudinal stretching. Because it is not degradable, It will pollute the environment after being discarded, and is susceptible to bacterial infection during storage and use, resulting in secondary pollution