Preparations of UV-curable Hydrophobic PU Resins for Steel Corrosion Control and Water-repellent Textile Applications
碩士 === 淡江大學 === 化學學系碩士班 === 99 === This research has been developed a series of hydrophobic UV curable polymeric materials for steel corrosion control as well as water-repellency applications. Steel corrosion control coat: A phosphate-containing UV-curable coating system is obtained by blending epox...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/16442675271304614664 |
| Summary: | 碩士 === 淡江大學 === 化學學系碩士班 === 99 === This research has been developed a series of hydrophobic UV curable polymeric materials for steel corrosion control as well as water-repellency applications.
Steel corrosion control coat: A phosphate-containing UV-curable coating system is obtained by blending epoxy (UV EPOXY-POH) and UV-curing siloxane (TMSPMA) in various ratios as a steel base coat; In addition, a hydrophobic group (fluorine-, long chain hydrocarbons or polydimethylsiloxane) -containing UV-curing PU prepolymer has been applied on top of steel primer as a top coat after UV-curing. The primer coat provides the tough (4H pencil hardness) with excellent adhesion (cross-cut passes 4B) surface and the top coat has been providing hydrophobic and dense protective surface coating. Furthermore, these steel anti-corrosion coatings have been standing for more than 148 hours salt spray test.
Water-repellent Textile treatment: A mixture with various ratios of these hydrophobic groups-containing UV-curing PU prepolymers has been prepared for water-repellent textile treatment. A PET textile has been treated with these hydrophobic PU prepolymer by dipping process and then cured by UV-radiation. A water-repellent PET textile has resulted and that demonstrated by its contact angle reaches to 140o on treated textile surface. And its contact angle has been remained after 20 water washing cycles (AATCC method). Due to UV-curing process creates IPN (interpenetrating networks of hydrophobic PU) within textile fibers that enhancing the washing durability.
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