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工艺与设备
PROCESS AND EQUIPMENTS

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Research on the optimization of PTFE-based composite material
coating process based on DOE

Du Zhongsi, Li Pan

（The 46th Research Institute of China Electronics Technology Group Corporation, Tianjin 300220, China）
Abstract: Polytetrafluoroethylene (PTFE)-based composite materials have found widespread application
in coating applications due to their exceptional chemical resistance, low friction coefficient, and excellent
thermal stability. However, optimizing coating process parameters is critical for enhancing coating thickness
uniformity, tensile strength, and elastic modulus. This study employed a design of experiments (DOE)
methodology to systematically investigate the effects of coating speed, curing temperature, and PTFE
content on coating performance. By establishing a mathematical model, the optimal combination of process
parameters was determined. Experimental results demonstrated that the optimized process parameters
significantly improved coating thickness uniformity and mechanical properties. After optimization, the coating
thickness uniformity (range) reached 0.050 mm ± 0.003 mm, tensile strength exceeded 9.0 MPa, and elastic
modulus exceeded 2800 MPa, providing a theoretical basis for the industrial application of PTFE-based
composite materials.
Key words: PTFE; composite materials; coating process; experimental design (DOE); tensile strength;
elastic modulus

（R-03）

年
2025 第 51 卷 ·37·