This paper delves into the importance of film prepative methods and how to prepare standard films that meet the requirements in Coating testing. By analyzing the content of four aspects of film performance testing, the key steps and requirements of film prepative are discussed, including the selection and processing of baseplate, and the methods and conditions of film prepative. In addition, different film prepative instruments are introduced, and how they improve the uniformity and stability of film prepative.
Film performance testing plays a vital role in the Coating industry. A great Coating product needs to perform well in every aspect, from basic physical performance to durability, and needs to undergo rigorous testing. However, ensuring the accuracy of the test results first requires a standard film that meets the requirements. This article will delve into the key points of film prepative methods and how to create a solid foundation for film performance testing.
Four aspects of film performance testing
In film performance testing, we usually focus on four main aspects that help us comprehensively evaluate the mass and performance of a film:
Detection of basic physical properties: This includes apparent and Optical inspection properties, mechanical properties and application performance. Appearance, Color and Gloss of the film are involved in the apparent and Optical inspection properties. Mechanical properties relate to the hardness, bending performance and tensile performance of the film. Application performance includes film recoating, sanding, etc.
Detection of physical change resistance performance: This aspect of the test mainly involves the resistance of the film to physical factors such as light, heat, sound, and electricity. For example, test the stability of the film at high temperatures and its resistance to ultraviolet light.
Detection of chemical resistance: This mainly includes checking the resistance performance and anti-corrosion performance of the film against various chemicals. These tests can ensure the stability of the film in the face of chemical substances.
Durability testing: These tests are mainly performed on films coated on substrates to evaluate their long-term performance and durability. This aspect of the test can help us understand the performance of the film in different environment conditions.
The importance of preparatory films
In order to ensure the accuracy and Reliability of film detection, it is essential to prepare standard films that meet the requirements. These standard films should truly reflect the essence of the film, even if there are defects. However, the preparation of standard films is not an easy task, and the following key points need to be noted:
Baseplate selection and processing: The material of the baseplate should be selected according to the product standard, and the surface preparation should meet the requirements. The mass of the baseplate directly affects the performance of the film.
Preparative methods and conditions: Coating viscosity, prepative method, Environmental temperature and Humidity, drying conditions and time must strictly comply with the specified requirements. These factors can affect the uniformity and mass of the film.
Preparative instruments: Different film prepative instruments can be used for different prepative methods. Common prepative instruments include swirl/spin lacquer coaters, scrapers, slot stick scrapers, etc. These instruments can improve the uniformity and stability of film prepatives.
Film prepative method and instrument
In the film prepative process, we can use different methods and instruments to achieve the prepative of standard films:
Swirl/spin lacquer: The swirl/spin lacquer is usually composed of a speed-regulating motor, a time-limited switch, a template holder, and a disc lacquer container that collects excess reagents. This method enables uniform film prepative.
Scraper: Scraper or Lacquer Film Applicator can achieve uniform film prepative by manual or automatic means. Automatic Lacquer Film Applicator can eliminate human operation errors and ensure film conformity.
Slot coating Bar: This scraper has special scraping grooves for more precise control of film thickness and uniformity. Slot bar scraper is often used for demanding film prepatives.
The film prepative method is a key link in Coating detection, which directly affects the accuracy and Reliability of film performance detection. The standard film that the prepative meets the requirements requires careful selection of baseplate, strict control of the prepative conditions, and the use of appropriate prepative instruments. Only through the correct prepative method can a reliable foundation be provided for film performance detection to ensure that the mass and performance of Coating products meet the standard requirements. In the future Coating industry, we should pay more attention to the importance of film prepative, and continuously improve the prepative methods and technologies to improve the mass and sustainability of film.
