应用化学2017，Vol.34Issue(4)：430-435,6.DOI:10.11944/j.issn.1000-0518.2017.04.160260
3-氨丙基三乙氧基硅烷对聚氨酯/Al-Sm2O3复合涂层自然老化性能的影响
Influence of 3-Aminopropyltriethoxysilane on Natural Aging Property of Polyurethane/Al-Sm2O3 Composite Coatings
摘要
Abstract
Polyurethane(PU)/Al-Sm2O3 composite coatings were modified by silane coupling agent 3-aminopropyltriethoxysilane(KH550).The variation of natural aging property before and after modification was systematically investigated from the perspectives of functional properties and mechanical properties.The results indicate that the stability of infrared emissivity of PU/Al-Sm2O3 composite coatings for natural aging is significantly enhanced after KH550 modification.The infrared emission of modified coatings is significantly lower than that of unmodified coatings under the same conditions.The dispersion of Sm2O3 particles on the coatings′ surface is more uniform after modified by KH550.The near-infrared light absorption intensity has increased, and this leads to a 1.06 μm near-infrared reflectivity of modified coatings, which is significantly lower than that of unmodified coatings.The coatings′ hardness has good stability for natural aging before and after modification.The hardness can maintain for 3 H.The adhesion strength and impact strength of the unmodified coatings are significantly affected by natural aging, but it can be significantly strengthened after KH550 modification to maintained at 1 grade and 50 kg·cm after natural aging for 4 months, respectively.关键词
复合涂层/红外发射率/近红外反射率/自然老化性能/力学性能Key words
composite coatings/infrared emissivity/near-infrared reflectivity/natural aging property/mechanical properties分类
化学化工引用本文复制引用
张伟钢,徐国跃,薛连海,陈亚西..3-氨丙基三乙氧基硅烷对聚氨酯/Al-Sm2O3复合涂层自然老化性能的影响[J].应用化学,2017,34(4):430-435,6.基金项目
国家自然科学基金资助项目(51173079) （51173079）
安徽省高校自然科学研究重点资助项目(KJ2016A535) （KJ2016A535）
滁州学院科研资助项目(2015PY02) （2015PY02）
滁州学院科研启动基金资助项目(2015qd15)Supported by the National Natural Science Foundation of China(No.40772033), University Natural Science Research Key Project of Anhui Province(No.KJ2016A535), Research Projects of Chuzhou University(No.2015PY02), Scientific Research Start Foundation Project of Chuzhou University(No.2015qd15) （2015qd15）
