Plastic films are closely linked to our daily lives and the development of scientific and information technology. Due to the varying environmental and operational conditions of film applications, there is a certain requirement for their temperature resistance. However, compared to traditional materials like metals, ceramics, and glass, films generally have lower overall thermal resistance, which significantly limits their use in high-temperature environments. Within plastic films, there is a significant difference in heat resistance among different types of plastics, with some having very low heat resistance and others higher. Generally, films with insulating materials that can operate at a long-term temperature of H-grade 180ºC or above are considered high-temperature-resistant. Traditionally, we define high-temperature-resistant films as those that can withstand temperatures above 200ºC.
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