石墨烯改性数字雕刻用绿色涂料制备及性能比较研究

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中图分类号：TQ635 文献标志码：A文章编号：1001-5922（2025）06-0036-04

Preparation and performance comparison study of graphene modified green coatings for digital engraving

LIN Yao（Chengdu Neusoft University，Chengdu ，China）

Abstract：In order to improve the electromagnetic shielding performance of green coatings for digital engraving， graphene was used to modify the styrene-acrylic emulsion and the coatings prepared by graphene modified sty⁃ rene-acrylic emulsion were prepared. The structure，microstructure，thermal stability and electromagnetic shielding performance of the coatings before and after modification were compared and analyzed. The results show that the modified coating is barrier-free during the brushing process，does not deteriorate after three cycles of freeze-thaw re⁃ sistance，and has a water permeability of 0.28 mL，which meets the T/CNCIA 01004—2017“Waterborne Graphene Electromagnetic Shielding Architectural Coatings”standard. Both the original coating and the modified coating showed calcium carbonate diffraction peaks，and the modified coating showed a layer-by-layer stacking pattern with high crystallinity. The thermal stability of the original coating and the modified coating is equivalent. In the stable stage，the electromagnetic shielding effectiveness of the modified coating is 23.04 dB，and the electromagnetic shield⁃ ing effectiveness of the original coating is 3.88 dB. The electromagnetic shielding effectiveness of the modified coat⁃ ing is higher than that of the original coating. The modified coating does not change the thermal stability and conven⁃ tional properties of the original coating，but the electromagnetic shielding performance is significantly improved， which is suitable for application in digital engraving coatings with electromagnetic shielding requirements.

Key words：digital engraving；green coating；preparation；performance；application

随着近年来人们对环保意识和节能意识的逐渐提高，绿色数字雕刻涂料的无毒、高环保等特点受到了广泛关注[1]。（剩余4081字）