Atomic Energy Council-institute of Nuclear Energy Research

Institute of Nuclear Energy Research, Atomic Energy Council

Mien-Win Wu

Chi-Fong Ai

Tien-Hsiang Hsueh

Cheng-Chang Hsieh

Disclosed is an atmospheric-pressure double-plasma graft polymerization apparatus. The apparatus includes a workbench, an initial roller of a roll-to-roll device, an atmospheric-pressure plasma activation device, a peroxide formation device, a coating and grafting device, a drying device, a graft polymerization and curing device, a curing device and a final roller of a roll-to-roll device. The devices are sequentially provided on the workbench.

Apparatus for double-plasma graft polymerization at atmospheric pressure

The present invention fabricates a hydrophobic and oleophobic polymer fabric through two stages of modification using atmospheric plasmas. The modified fabric has a rough surface and a fluorocarbon functional group having the lowest surface free energy. The fabric has a grafted fluorocarbon monomer layer to enhance the graft efficiency of the fluorocarbon functional groups and its wash fastness. The atmospheric plasmas can be mass produced and less expensively. Hence, the present invention can rapidly modify surfaces of polymeric materials with low cost and good environment protection.

Structure and its method for hydrophobic and oleophobic modification of polymeric materials with atmospheric plasmas

A method of fabricating hydrophobic and oleophobic polymer fabric through two stages of modification using atmospheric plasmas including (a) moving a substrate into an atmospheric plasma area, generating an atmospheric filamentary discharge plasma with a first plasma working gas to obtain a first rough surface of said substrate, (b) exposing plasma treated substrate to air to obtain highly active peroxide on said first rough surface of said substrate, (c) immersing said substrate in a solution of fluorocarbon compound and processing a first stage of graft of a fluorocarbon monomer or oligomer on said substrate to obtain a grafted fluorocarbon monomer or oligomer layer on said first rough surface of said substrate, (d) processing a second stage of graft a fluorocarbon functional group to said grafted fluorocarbon monomer or oligomer layer by generating a carbon tetrafluoride plasma from a second plasma working gas and irradiating said carbon tetrafluoride plasma on said grafted fluorocarbon monomer or oligomer layer; and (e) curing and drying said substrate.

Method for hydrophobic and oleophobic modification of polymeric materials with atmospheric plasmas

An atmospheric pressure plasma reactor includes a high-voltage electrode, a common grounded electrode, a bias electrode and at least one dielectric layer. The high-voltage electrode is connected to a high-voltage power supply. The common grounded electrode is used with the high-voltage electrode to discharge and therefore produce planar atmospheric plasma from reactive gas. The bias electrode is used to generate bias for attracting the ions of the planar atmospheric pressure plasma. The dielectric layer is used to suppress undesirable arc discharge during the discharging.

Growing community of inventors

Taoyuan County, Taiwan

Mien-Win Wu