| ZHAO Yun-lin,ZHANG Wei-gang.Effects of Sericite and Silane Coupling Agent KH550 on Saline Water Resistance of Polyurethane/Al-Sm2O3 Composite Coatings[J],46(5):94-98 |
| Effects of Sericite and Silane Coupling Agent KH550 on Saline Water Resistance of Polyurethane/Al-Sm2O3 Composite Coatings |
| Received:December 19, 2016 Revised:May 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.05.016 |
| KeyWord:composite coatings sericite silane coupling agent infrared emissivity near-infrared reflectivity mechanical properties |
| Author | Institution |
| ZHAO Yun-lin |
Chuzhou University, Chuzhou , China |
| ZHANG Wei-gang |
Chuzhou University, Chuzhou , China |
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| Abstract: |
| The work aims to improve saline water resistance of polyurethane(PU)/Al-Sm2O3 composite coatings. PU/Al- Sm2O3 composite coatings were modified with sericite and silane coupling agent KH550, and varying patterns of microstructure, infrared emissivity, near-infrared reflectivity and mechanical properties of the coatings before and after modification were systematically investigated, then the causes were analyzed and discussed. Compared with the unmodified coatings, microstructure of the modified sericite and KH550 coatings was almost unchanged after corrosion, and the modified coatings had lower near-infrared reflectivity of 1.06 μm and better mechanical properties under the same corrosion conditions of saline water. Hardness, adhesion strength and impact strength of the modified coatings were maintained at 3H, grade 1 and 50 kgcm 10 days after saline water corrosion. Sericite and KH550 modification can improve the stability of low near-infrared reflection property and mechanical properties of PU/Al-Sm2O3 composite coatings to saline water corrosion. |
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