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

A technology of biodegradable material and breathable film, applied in the field of polymer/inorganic powder composite material processing, can solve the problems of environmental pollution, secondary pollution, easy to be infected by bacteria, etc., achieve good biocompatibility, reduce environmental pollution, etc. Pollution, the effect of good antibacterial effect

Inactive Publication Date: 2019-04-09
池州市锐强新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Choose 50 parts of superfine heavy calcium carbonate, choose aluminate coupling agent as surface modifier, titanate coupling agent 0.5 parts each, activator choose stearic acid 1 part, rare earth antibacterial agent choose rare earth metal lanthanum and hydroxyl 1 part of rare earth metal complex formed by quinoline and Schiff base, 0.5 parts of antioxidant 1010, 1.5 parts of zinc stearate as processing aid, 40 parts of polylactic acid and polyethylene glycol for biodegradable materials Alcohol 5 parts. Wherein, the antioxidant can be selected from hindered phenolic antioxidants and phosphorous acid antioxidants and mixed with one or more. Choose from antioxidants such as Oxygen 1010, Antioxidant 1076 and Antioxidant 245.

[0031] (1) Grinding and grading heavy calcium carbonate with a jet mill to obtain unmodified ultrafine heavy calcium carbonate powder with a particle size distribution range of D50<3 μm, D95<8 μm, and D100<10 μm;

[0032] (2) drying the unmodified ...

Embodiment 2

[0039] Select 35 parts of superfine heavy calcium carbonate, 0.5 parts of phosphate coupling agent as surface modifier, 2 parts of epoxy soybean oil as activator, and 2 parts of rare earth antibacterial agent as rare earth metal yttrium, picolinic acid and o-phenanthroline 0.5 part of rare earth metal complex, 2 parts of calcium stearate as processing aid, 50 parts of polylactic acid and 8 parts of polycaprolactone as biodegradable material, and 2 parts of tributyl citrate as compatibilizer.

[0040] (1) Grinding and grading heavy calcium carbonate with a jet mill to obtain unmodified ultrafine heavy calcium carbonate powder with a particle size distribution range of D50<3 μm, D95<8 μm, and D100<10 μm;

[0041] (2) drying the unmodified superfine ground calcium carbonate powder to a moisture content of ≤0.3%, and placing 35 parts of the dried unmodified superfine ground calcium carbonate powder in a high-speed mixer;

[0042] (3) Add 0.5 parts of phosphate coupling agent, mix ...

Embodiment 3

[0048]Select 40 parts of superfine heavy calcium carbonate, 3 parts of borate coupling agent as surface modifier, 0.5 part of monoglyceride stearate as activator, rare earth antibacterial agent as rare earth metal yttrium and o-phenanthroline, nitric acid 0.5 parts of rare earth metal complexes formed by root ions, 0.5 parts of antioxidant 1076 (commonly available antioxidants in the market include antioxidant 168, antioxidant 1010, antioxidant 1076 and antioxidant 245), 3 parts of calcium stearate were selected as processing aids, 42 parts of polylactic acid and 8 parts of polybutylene succinate were selected as biodegradable materials, and 2.5 parts of tributyl phosphite were selected as compatibilizer.

[0049] (1) Grinding and grading heavy calcium carbonate with a jet mill to obtain unmodified ultrafine heavy calcium carbonate powder with a particle size distribution range of D50<3 μm, D95<8 μm, and D100<10 μm;

[0050] (2) Dry the unmodified superfine ground calcium carb...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L71/02C08L91/00C08L5/08C08K13/06C08K9/04C08K3/26C08K5/3437C08K5/29C08K5/134C08K5/526C08K5/098C08K5/11C08K5/524C08K5/20C08J5/18
CPCC08J5/18C08J2367/04C08J2405/08C08J2467/02C08J2467/04C08J2471/02C08J2491/00C08K5/098C08K5/11C08K5/1345C08K5/20C08K5/29C08K5/3437C08K5/524C08K5/526C08K9/04C08K13/06C08K2003/265C08K2201/003C08K2201/014
Inventor 蔡梦军王建强
Owner 池州市锐强新材料有限公司
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