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METHOD FOR PREPARING BIOCOMPATIBLE FLUOROPOLYMERIC COVER IN ARTICLE MADE OF NITINOL

机译：制备镍钛诺生物相容性氟聚合物覆盖物的方法

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摘要

FIELD: medicine, chemistry of polymers, chemical technology.;SUBSTANCE: invention describes a method for preparing biocompatible fluoropolymeric covers on articles made of nitinol. Method involves preliminary preparing an article surface in aqueous electrolyte of the following composition, g/l: NaAlO₂, 10-20; Na₂CO₃, 15-20; Na₃PO₄, 20-25 in anode regimen at the forming voltage alternating from 0 to 180-200 V at the rate 0.2-0.3 V/s for 10-20 min and then in the bipolar regimen at the constant anode forming voltage in the range 180-200 V and density of cathode component of current 1.0-1.5 A/cm² for 5-10 min, and applying highly-dispersed low-molecular polytetrafluoroethylene on a prepared surface by mechanical rubbing and heating the applied cover at temperature 100-120^°C for 50-70 min. Proposed method provides preparing biocompatible fluoropolymeric covers on articles of a random form made of nitinol wherein these covers show high homogeneity and smoothness and preventing simultaneously release of nickel ions on surface based on decreasing porosity.;EFFECT: improved preparing method, improved and valuable properties of covers.;2 cl, 4 dwg, 2 ex

机译：领域：药物，聚合物化学，化学技术;发明领域：本发明描述了一种在镍钛诺制成的制品上制备生物相容性氟聚合物覆盖物的方法。该方法包括在具有以下组成g / l的水性电解质中初步制备制品表面：NaAlO _{2 ，10-20; Na _{2 CO _{3 ，15-20; Na _{3 PO _{4 ，在20至25的阳极方案中，形成电压从0至180-200 V交替变化，速率为0.2-0.3 V / s，持续10-20分钟，然后在双极模式下，在恒定的阳极形成电压（范围为180-200 V）和阴极组件的密度为电流1.0-1.5 A / cm ^{2 的条件下保持5-10分钟，机械摩擦并在100-120℃的温度下加热施加的覆盖层50-70分钟，在制备的表面上分散低分子量的聚四氟乙烯。提出的方法提供了在由镍钛诺制成的无规形式的制品上制备生物相容性氟聚合物覆盖物的方法，其中这些覆盖物显示出高的均质性和光滑度，并且由于孔隙率的降低而防止了镍离子在表面上的同时释放。盖;; 2 cl，4 dwg，2 ex}}}}}}

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公开/公告号RU2316357C1

专利类型
公开/公告日2008-02-10

原文格式PDF
申请/专利权人 INSTITUT KHIMII DALNEVOSTOCHNOGO OTDELENIJA ROSSIJSKOJ AKADEMII NAUK (STATUS GOSUDARSTVENNOGO UCHREZHDENIJA) (INSTITUT KHIMII DVO RAN);
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申请/专利号RU20060131389
发明设计人 SINEBRJUKHOV SERGEJ LEONIDOVICH;TSVETNIKOV ALEKSANDR KONSTANTINOVICH;KHRISANFOVA OLGA ALEKSEEVNA;GNEDENKOV SERGEJ VASILEVICH;PUZ ARTEM VIKTOROVICH;GNEDENKOV ANDREJ SERGEEVICH;
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申请日2006-08-31
分类号A61L27/34;C25D11/26;
国家 RU
入库时间 2022-08-21 19:50:51

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