吸波涂料是一种能够吸收和衰减入射电磁波的功能涂料,而水性吸波涂料更具有环保健康的特点。选择炭黑和羰基铁粉作为复合吸波剂,加入水性苯丙乳液中制备成本较低的复合吸波涂层。首先测试了炭黑和羰基铁粉的电磁参数,并计算得出成分为12%炭黑和70%羰基铁粉,厚度为2mm时吸波性能最佳,反射损耗优于-5dB的有效吸收频宽达到9.9GHz,反射损耗峰值达到-28.6dB。然后制备了含12%炭黑和70%羰基铁粉,厚度为2mm的苯丙吸波涂层,测试分析了苯丙吸波涂层的吸波性能以及涂料相关性能。
Wave-absorbing coating is a kind of functional coating that can absorb and attenuate incident electromagnetic waves,while waterborne wave-absorbing coating has more environmental protection and health characteristics.In this paper,carbon black and carbonyl iron powder were selected as composite absorbers,and a low-cost composite wave-absorbing coating was prepared by adding them to aqueous styrene acrylic emulsion.Firstly,the electromagnetic parameters of carbon black and carbonyl iron powder were tested.It was calculated that the optimal absorption performance was achieved with the composition of 12% carbon black and 70% carbonyl iron powder at a thickness of 2mm,the effective absorption bandwidth of reflection loss was better than -5dB and reached 9.9GHz,and the peak reflection loss reached -28.6dB.Then,a styrene-acrylate wave-absorbing coating containing 12% carbon black and 70% carbonyl iron powder with a thickness of 2mm was prepared,and the wave absorption performance of the composite coating and the related coating properties were investigated.
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基金资助
山西浙大新材料与化工研究院研发项目(2022SX-TD022和2021SX-TD008);山西省“1331工程”资助(晋政发〔2021〕3号);山西省自然科学研究面上项目(202103021224102);山西省重点研发项目(202102040201011)
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