Fabrication, Characterization and Implementation of Thermo Resistive TiCu(N,O) Thin Films in a Polymer Injection Mold

Materials

Senentxu Lanceros-Mendez¹  Filipe Vaz²  Armando Ferreira²  Francisco Macedo²  Eva Oliveira²  JoãoPaulo Silva²  Jorge Laranjeira³ 

[1] BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain;Centro de Física, Universidade do Minho, 4710-057 Braga, Portugal;Moldit–Indústria de Moldes SA, Rua da Moura, Apartado 28, 3720-903 Loureiro, Portugal;

关键词: injection mold;    sensors;    temperature coefficient of resistance;    thermal properties;   

DOI  :  10.3390/ma13061423

来源: DOAJ

【 摘 要 】

This paper presents the development of metallic thermoresistive thin film, providing an innovative solution to dynamically control the temperature during the injection molding process of polymeric parts. The general idea was to tailor the signal response of the nitrogen- and oxygen-doped titanium-copper thin film (TiCu(N,O))-based transducers, in order to optimize their use in temperature sensor devices. The results reveal that the nitrogen or oxygen doping level has an evident effect on the thermoresistive response of TiCu(N,O) films. The temperature coefficient of resistance values reached 2.29 × 10⁻² °C⁻¹, which was almost six times higher than the traditional platinum-based sensors. In order to demonstrate the sensing capabilities of thin films, a proof-of-concept experiment was carried out, integrating the developed TiCu(N,O) films with the best response in an injection steel mold, connected to a data acquisition system. These novel sensor inserts proved to be sensitive to the temperature evolution during the injection process, directly in contact with the polymer melt in the mold, demonstrating their possible use in real operation devices where temperature profiles are a major parameter, such as the injection molding process of polymeric parts.

【 授权许可】

Unknown