研究目的
To investigate whether the method of vacuum plasma deposition of SiOx barrier nanocoatings on a polyethylene terephthalate (PET) foil can be used to increase the resistance of foils from other polymers against the permeation of organic solvents and other toxic liquids.
研究成果
The study demonstrated that plasma deposition in vacuum can form barrier nanopowders from SiOx on polymer matrices, with the HMDSO method being more appropriate for influencing SiOx nanocoating thickness and quality. Essential requirements for forming applicable barrier materials include depositing SiOx on low swellable polymeric foils and laminating immediately to prevent mechanical damage. Future research should focus on improving the fixation of barrier nanocoatings on the polymer matrix and their resistance to mechanical stress.
研究不足
The study highlights the rapid destruction of most barrier layers due to swelling of the carrier polymer when exposed to liquid test chemicals, indicating a limitation in the protective properties enhancement. The stiffness and imprecision of materials like CERAMIS? limit their utility in anti-gas protection applications.
1：Experimental Design and Method Selection:
The study involved the preparation of SiOx barrier nanocoatings on selected polymer matrices using vacuum plasma deposition methods (PA-PVD and PECVD).
2：Sample Selection and Data Sources:
Polymeric foils from polyethylenevinyl acetate (PEVA), polypropylene (PP), and polyethylene terephthalate (PET) were used as substrates.
3：List of Experimental Equipment and Materials:
Equipment included a vacuum apparatus for barrier nanocoatings preparation, scanning electron microscope (SEM) for microstructure evaluation, and SorpTest device for testing barrier materials resistance. Materials included SiO powder, HMDSO, melamine, parylene C, and test chemicals like sulphur mustard (HD) and 1,6-dichlorohexane (DCH).
4：Experimental Procedures and Operational Workflow:
The process involved plasma surface activation, PVD, PA-PVD, and PECVD processes under specific conditions to deposit SiOx and other barrier layers on polymeric matrices.
5：Data Analysis Methods:
The protective properties were evaluated using SEM for microstructure analysis and SorpTest for permeation resistance.
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