졸-겔 법을 통한 수분산형 폴리우레탄 합성 및 가교밀도 개선에 따른 성능 연구
The Effect of Improved Crosslink Density on the Properties of Waterborne Polyurethanes Using Sol-Gel Process
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Water-based systems are dominating the coating market because of worldwide VOCs regulations. Research is focusing especially on waterborne polyurethane (WPU) because of its unique mechanicaland chemical properties. However, commercial WPU consists of linear thermoplastic polymers withpolar groups on the main chain, which do not perform as well as solvent-borne PU in a two-packsystem. In this study, APTES were used as a chain crosslink agent to overcome commercial WPU’slimited performance. WPUs synthesized by using a sol-gel process were evaluated with FT-IR, particleanalysis, TGA, tensile tests, pull-off tests, SEM, and EIS. The results showed that WPUs with addedAPTES had better thermal stability, mechanical properties, and water resistance than did WPUs withoutadded APTES. Consequently, the sol-gel process increased the crosslink density of WPUs and modifiedthe WPU’s own properties.
Abstract
Water-based systems are dominating the coating market because of worldwide VOCs regulations. Research is focusing especially on waterborne polyurethane (WPU) because of its unique mechanicaland chemical properties. However, commercial WPU consists of linear thermoplastic polymers withpolar groups on the main chain, which do not perform as well as solvent-borne PU in a two-packsystem. In this study, APTES were used as a chain crosslink agent to overcome commercial WPU’slimited performance. WPUs synthesized by using a sol-gel process were evaluated with FT-IR, particleanalysis, TGA, tensile tests, pull-off tests, SEM, and EIS. The results showed that WPUs with addedAPTES had better thermal stability, mechanical properties, and water resistance than did WPUs withoutadded APTES. Consequently, the sol-gel process increased the crosslink density of WPUs and modifiedthe WPU’s own properties.
참고문헌 (16)
- H. Sardon, , Polymer, 51, pp.5051~ (2010)
- D. Dieterich, , Prog. Org. Coat, 9, pp.281~ (1981)
- H. sardon, , Prog. Org. Coat, 77, pp.1436~ (2013)
- D. K. Chattopadhyay, , Prog. Polym. Sci, 32, pp.352~ (2007)
- J. E. Gray, , J. Alloy. Compd, 336, pp.88~ (2002)
- X.-Y. Ma, , Polym. Degrad. Stabil, 94, pp.1103~ (2009)
- J. Huybrechts, , Prog. Org. Coat, 38, pp.67~ (2000)
- "Anti-Corrosion Coating Market – Global Trends Forecasts to 2019", ~
- B. Müller, "Coatings compendia", pp.1~ (2006)
- J. D. Wright, "Sol-gel Materials- Chemistry and Applications" (2001), Gordon and Breach Science
- S. J. Peng, , Prog. Org. Coat, 86, pp.1~ (2015)
- J. Y. Lim, , J. Power Sources, 301, pp.18~ (2016)
- S. Subramani, , Polym. Advan. Technol, 18, pp.601~ (2007)
- Y. Xia, , Macromol. Rapid Comm, 32, pp.1331~ (2011)
- L. lei, , Chem. Eng. J, 253, pp.518~ (2016)
- A. Santamaria-Echart, , Colloid. Surface. A, 482, pp.554~ (2015)