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中文摘要: 采用乳液法结合等离子体涂层制备聚苯乙烯（PS）-聚乙烯醇（PVA）-辉光放电聚合物（GDP）多层塑料空心微球。通过测量不同充气平衡时间和平衡温度下球内气体的总量研究了氖气对塑料球的气体渗透系数。研究表明，当充氖温度为60、70、80、90 ℃时，微球充气平衡的时间分别为70~100 h、50~90 h、30~60 h，20~40 h。室温（25 ℃）时氖气对塑料球的渗透系数为0.5×10-19~2.0×10-19 mol/(m·s·Pa)，对于直径300 μm，PVA壁厚2 μm的微球，充Ne后的保气半寿命约3～12 d。当外压为4 MPa，平衡温度为80 ℃时，球内可充氖2.6~3.2 MPa。
Abstract:The hollow plastic capsules, which composed of polystyrene (PS), polyvinyl alcohol (PVA) and glow discharge polymer (GDP), are prepared by emulsion and low pressure plasma coating. The neon permeability through the capsules is investigated by detecting gas quantity inside the capsule under diffe-rent equilibrium temperature and time. Results show that the equilibrium time is 70-100 h at 60 ℃, while 50-90 h at 70 ℃, 30-60 h at 80 ℃ and 20-40 h at 90 ℃. The neon permeability of hollow plastic capsules is 0.5×10-19-2.0×10-19mol/(m·s·Pa) at room temperature(25 ℃), which corresponds the half life for neon retention to be about 3-12 d with the diameter of 300 μm and the PVA wall thickness of 2 μm. The capsules can be gain with inner neon pressure 2.6-3.2 MPa under the condition of outer pre-ssure 4 MPa at the fill temperature 80 ℃.
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张占文,刘梅芳,李婧,陈素芬,刘一杨,李波.氖气在聚乙烯醇多层塑料球壳内的渗透性能[J].功能高分子学报,2014,27(2):.
ZHANG Zhan-wen,LIU Mei-fang,LI Jing,CHEN Su-fen,LIU Yi-yang,LI Bo.Neon Permeation in Polyvinyl Alcohol Multilayer Plastic Capsules[J].Journal of Functional Polymers,2014,27(2):.
张占文,刘梅芳,李婧,陈素芬,刘一杨,李波.氖气在聚乙烯醇多层塑料球壳内的渗透性能[J].功能高分子学报,2014,27(2):.
ZHANG Zhan-wen,LIU Mei-fang,LI Jing,CHEN Su-fen,LIU Yi-yang,LI Bo.Neon Permeation in Polyvinyl Alcohol Multilayer Plastic Capsules[J].Journal of Functional Polymers,2014,27(2):.
