张伟钢,吴佳佳.石墨烯改性聚氨酯/Sm2O3复合涂层的近红外吸收与耐温性能[J].表面技术,2018,47(1):39-44.
ZHANG Wei-gang,WU Jia-jia.Near-infrared Absorption and Heat Resistance of Graphene Modified Polyurethane/Sm2O3 Composite Coating[J].Surface Technology,2018,47(1):39-44 |
| 石墨烯改性聚氨酯/Sm2O3复合涂层的近红外吸收与耐温性能 |
| Near-infrared Absorption and Heat Resistance of Graphene Modified Polyurethane/Sm2O3 Composite Coating |
| 投稿时间：2017-07-16 修订日期：2018-01-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.01.007 |
| 中文关键词: 复合涂层 石墨烯 近红外吸收 耐温性能 力学性能 |
| 英文关键词:composite coating graphene near-infrared absorption heat resistance mechanical properties |
| 基金项目:安徽省高校自然科学研究重点项目（KJ2016A535）；滁州学院科研项目（2015PY02）；滁州学院科研启动基金项目（2015qd15）；滁州学院绿色化工与核心技术创新平台项目 |
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| 中文摘要: |
| 目的 提高聚氨酯（PU）/Sm2O3复合涂层的近红外吸收与耐温性能。方法 以Sm2O3为颜料、PU为黏合剂、石墨烯为改性剂，采用喷涂法制备得到了石墨烯改性PU/Sm2O3复合涂层。从近红外反射率、外观、微结构及力学性能等方面，系统研究了石墨烯改性对涂层近红外吸收及耐温性能的影响规律。结果 石墨烯改性可明显降低PU/Sm2O3复合涂层对1.06 µm近红外光的反射率，当石墨烯添加量为8%（占Sm2O3质量的百分比）时，可使涂层对1.06 μm近红外光的反射率从改性前的60.4%降低为17.3%，大大提升了涂层对1.06 µm激光的隐身效能。石墨烯改性可使涂层的耐温性能有所增强，改性涂层因热处理而颜色加深的现象有所改善。同时改性涂层相比未改性涂层可保持更加稳定和优越的力学性能，改性涂层经不同温度热处理后的硬度、附着力和耐冲击强度可分别保持在3H、1级和50 kg•cm。结论 石墨烯改性可明显提高PU/Sm2O3复合涂层的近红外吸收性能，并可在一定程度上提高涂层的耐温性能，从而使涂层可较好地满足实际工程应用要求。 |
| 英文摘要: |
| The work aims to improve near-infrared absorption and heat resistance of polyurethane (PU)/Sm2O3 composite coating. With Sm2O3, PU and graphene as pigment, adhesive and modifier, respectively, graphene modified PU/ Sm2O3 composite coatings were prepared in spraying method. Rule of influence of graphene modification on the near-infrared absorption and heat resistance of the coatings was systematically investigated from the perspectives of near-infrared reflectivity, appearance, microstructure, mechanical properties, etc. Graphene modification could significantly reduce reflectivity of PU/ Sm2O3 composite coatings to 1.06 µm near-infrared light. When addition amount of graphene was 8 wt%, the near-infrared reflectivity of the coatings to 1.06 µm near-infrared light could significantly reduce from 60.4% to 17.3%, which greatly enhanced stealth efficacy of the coatings to 1.06 µm laser. The graphene modification could improve heat resistance of the coating, color burn due to heat treatment was improved for the modified coating. Meanwhile, the modified coatings could maintain more stable and superior mechanical properties than the unmodified coating. Hardness, adhesion and impact strength of the modified coatings subject to heat treatment at different temperature could be maintained at 3H, grade 1 and 50 kg•cm, respectively. The near-infrared absorption property of PU/Sm2O3 composite coatings can be significantly improved by graphene modification, and heat resistance of the coatings can be improved to a certain extent, hence the coatings can better meet the requirements of practical engineering application. |
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