Preparation and characterization of PU/PDA/PPy/Ag flexible film for electric heating

IF 1.9 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Surface Innovations Pub Date : 2024-09-26 DOI:10.1680/jsuin.24.00011

Peijun Huang, Binjie Xin

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引用次数: 1

Abstract

In order to construct a more perfect and uniform conductive network, we use polyurethane (PU) as the substrate, polydopamine (PDA) and polypyrrole (PPy) as the intermediate layer, and silver (Ag) as the outer layer, and combine magnetron sputtering with the three-step method of film scraping, surface grafting, and in situ polymerization, to prepare the PU/PDA/PPy/Ag composite film. The effects of different sputtering times on the properties of PU/PDA/PPy/Ag electrically heated composite films were investigated. Based on the results, the PU/PDA/PPy/Ag composite film exhibits superior electrical conductivity compared with the original PU/PDA/PPy composite film. Optimal electrical and thermal conductivity is achieved with a sputtering time of 120 s. When a voltage of 5 V is applied, the peak temperature of the PU/PDA/PPy/Ag composite film reaches 112°C, which is 31°C higher than that of the PU/PDA/PPy composite film, which only reaches 81°C under the same voltage. At the same time, the mechanical properties of the composite film were significantly improved, with a fracture strength of 6.9 MPa, which has a good potential for application and development value.

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PU/PDA/PPy/Ag电加热柔性薄膜的制备与表征

为了构建更加完善均匀的导电网络，我们以聚氨酯（PU）为衬底，聚多巴胺（PDA）和聚吡啶（PPy）为中间层，银（Ag）为外层，结合磁控溅射，采用刮膜、表面接枝、原位聚合三步法制备PU/PDA/PPy/Ag复合薄膜。研究了不同溅射时间对PU/PDA/PPy/Ag电加热复合薄膜性能的影响。结果表明，PU/PDA/PPy/Ag复合膜的导电性优于PU/PDA/PPy复合膜。溅射时间为120s时，实现了最佳的电导率和导热性。当外加电压为5 V时，PU/PDA/PPy/Ag复合膜的峰值温度达到112℃，比相同电压下PU/PDA/PPy复合膜的峰值温度仅达到81℃高出31℃。同时，复合膜的力学性能得到显著改善，断裂强度达到6.9 MPa，具有良好的应用开发潜力。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.