In 1938, DuPont from the United States made a major breakthrough by synthesizing polytetrafluoroethylene (PTFE) resin and introducing the famous "Teflon" non-stick coating. This process involved dispersing PTFE particles in a solvent and then sintering them at high temperatures between 360-380°C to form a durable film. Teflon can operate effectively over a wide temperature range, from -195°C to -250°C, and it exhibits exceptional chemical resistance, making it ideal for use in non-stick coatings such as cookware linings and reactor linings. By the 1960s, Elf Atochem launched the "Kynar500" brand of polyvinylidene fluoride (PVDF), which became widely used in fluorocarbon coatings. PVDF offered excellent weather, water, and stain resistance, especially for exterior building applications. However, because PVDF is not soluble in common solvents, it required high-temperature baking—between 230-250°C—to form a solid film. As a result, it was mainly applied to materials like aluminum panels and color steel sheets that could withstand such heat, limiting its broader usage in other substrates. In 1982, Asahi Glass developed a new type of fluorocarbon resin known as fluoroolefin-vinyl ether copolymer (FEVE). This resin introduced functional groups that allowed it to dissolve in common solvents at room temperature and cure without needing high heat. This innovation significantly expanded the application of fluorocarbon coatings, enabling their use on materials like PVC profiles, steel structures, glass, ceramics, and even large metal plates that couldn't be baked. FEVE-based coatings brought greater flexibility and versatility to the industry. During the mid-to-late 1990s, water-based fluorocarbon emulsion resins were successfully introduced. These coatings matched or even exceeded the performance of traditional solvent-based versions in terms of weather resistance, pollution resistance, and chemical resistance. Additionally, they were environmentally friendly, helping companies meet strict European and American environmental regulations. Their ease of application and lower cost made them a popular choice, leading to their rapid adoption in architectural coatings. As technology continues to evolve, new developments in fluorocarbon coatings are emerging. Researchers are working on advanced products such as hydrophilic self-cleaning coatings, fire-retardant coatings, wear-resistant and lubricating coatings, fluorescent and electrothermal coatings, powder coatings, waterborne wood coatings, and nano-coatings. These innovations aim to address specific needs across various industries, from construction to automotive and beyond. Today, there are more than 20 fluororesin manufacturers worldwide, spread across over ten countries. By 2000, global production capacity reached about 100,000 tons, and by 2005, it had grown to between 120,000 and 140,000 tons. Major players include DuPont, ICI, Atochem, Asahi Glass, and Daikin, with annual capacities ranging from 3,000 to 20,000 tons. Domestically, companies like Shanghai San Aifu and Changshu Zhongyi have also emerged, contributing to the growth of the industry in China. Compared to international markets, foreign fluorocarbon coating industries are more established, with mature technologies, well-developed standards, and extensive application experience. Companies like PPG, Daikin, and Asahi Glass are considered leaders in the field. In contrast, the domestic industry started later but has seen rapid development. Over the past decade, Chinese companies have not only adopted existing technologies like Teflon and PVDF but have also successfully promoted FEVE-based room-temperature curing coatings and water-based eco-friendly solutions. One example of a successful domestic company is Shanghai Hengfeng Fluorocarbon Materials Co., Ltd., which offers both solvent-based FC-S series and water-based FC-W series fluorocarbon coatings. These products reflect the growing capabilities and technological advancements within the Chinese market, positioning it as a key player in the global fluorocarbon coating industry. Fire Pump Set,Electric Fire Pump Set,Dual Fire Pump Set,Vertical Turbine Fire Pump Set Shanxi Skysea Pump Lndustry Co.,Ltd. , https://www.skyseatianhai.com
Development of fluorocarbon coating industry at home and abroad
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