Antibacterial gas-permeable membrane and preparation method thereof

Abstract

The invention discloses an antibacterial gas-permeable membrane and a preparation method thereof. The antibacterial gas-permeable membrane comprises the following raw materials in parts by weight: 62-72 parts of polyethylene, 13-17 parts of an ethylene-vinyl alcohol copolymer, 8-12 parts of polylactic acid, 5-7 parts of maleic anhydride grafted polyethylene, 3-4 parts of light calcium carbonate, 3-4 parts of heavy calcium carbonate, 2-3 parts of nano porous silicon dioxide, 1.5-2.5 parts of sepiolite powder, 1.3-1.6 parts of an antibacterial agent, 1.4-1.8 parts of a coupling agent, 2-4 partsof stearate, 1.2-1.4 parts of a surfactant and 2-3 parts of a dispersant. The antibacterial gas-permeable membrane is high in water vapor transmission rate, good in breathability, and high in static water pressure resistance, cannot leak liquid water during use, is low in powder falling weight, low in powder falling amount, high in antibacterial rate and good in antibacterial effect, can be completely degradedwithin 4-6 months in a composting state, and does not cause pollution to the environment,.

Description

technical field [0001] The invention relates to the field of film materials, in particular to an antibacterial breathable film and a preparation method thereof. Background technique [0002] A breathable film material used in the production of sanitary products such as diapers and sanitary napkins, as well as medical disposables such as medical protective clothing and sanitary nursing pads, is made of polyethylene or polypropylene by casting or blow molding. The sheet is then made by longitudinal stretching process. Polyethylene or polypropylene materials are products of petroleum refining, and after use, they are accumulated as solid waste in the environment and are difficult to degrade, so they have adverse effects on the environment. [0003] In addition, the breathable film materials currently used also have the following problems: [0004] 1. Since blown breathable membranes began to be introduced to the domestic market, a number of diaper manufacturers have reported ...

AI Technical Summary

Problems solved by technology

[0005] 2. No antibacterial properties, or poor antibacterial and antibacterial effects;

[0006] 3. The air permeability is poor, the water vapor transmission rate is low, and the water vapor transmission efficiency is low;

[0007] 4. Easy to leak liquid water;

[0008] 5. The mechanical properties of the product are poor, easy to damage, or the shelf life is short

[0009] That is, the existing breathable film has poor overall performance

Images