As one of WDF\u2019s key products, PK material has attracted increasing attention due to its unique molecular structure and excellent overall performance. Perhaps many people still do not have an in-depth understanding of PK. Therefore, let us get to know this material again \u2014 a material combining \u201cgreen environmental protection\u201d and \u201cinnovative potential\u201d.<\/p>\n\n\n\n
Understanding PK \u2014 Composition and Structure of PK<\/strong><\/p>\n\n\n\n PK (Polyketone) is a polymer produced through the terpolymerization of carbon monoxide, ethylene, and propylene. It is a green and environmentally friendly material with diverse performance characteristics, featuring a main chain composed only of C-C bonds.<\/p>\n\n\n\n Understanding PK \u2014 Basic Properties of PK Material<\/strong><\/p>\n\n\n\n The specific gravity of PK material is: 12% lower than POM, 6% lower than PBT.Its molecular structure determines its excellent toughness and impact resistance. Under different conditions, its mechanical strength changes little, and its performance stability is superior to other conventional engineering plastics.<\/p>\n\n\n\n PK Characteristics \u2014 Excellent Hydrolysis Resistance<\/strong><\/strong><\/p>\n\n\n\n Hydrolysis refers to the degradation phenomenon that occurs when materials come into contact with water or water vapor, which usually leads to a decrease in material strength, rigidity, and durability. Compared with traditional plastics, PK material demonstrates stronger resistance to water absorption and hydrolysis.Compared with nylon, PK is less sensitive to humidity and is suitable for components exposed to water.<\/p>\n\n\n\n PK Characteristics \u2014 Wear Resistance & Low Noise<\/strong><\/strong><\/p>\n\n\n\n PK features outstanding wear resistance, with wear performance up to 14 times that of POM.<\/p>\n\n\n\n It also provides long-term dimensional stability, and its strength is less affected by humidity.These advantages enable PK to be used in applications such as pulleys, gears, and bearing bushings. Compared with traditional materials such as POM and nylon, PK is more suitable for solving issues including wear debris generation, gear tooth breakage, and noise reduction.<\/p>\n\n\n\n Wear \/ Noise Test<\/strong><\/strong><\/p>\n\n\n\n PK vs. POM: Comparison of Low Wear and Low Noise Performance<\/p>\n\n\n\n Ring-on-ring test: (100 rpm, 66 N)<\/p>\n\n\n\n Cooling Fan Engineering Specification \u2014 Noise Test<\/strong><\/p>\n\n\n\n Compared with PA66+GF\/MF, PK+GF demonstrates lower noise levels (5 dB difference).<\/p>\n\n\n\n Due to its relatively low glass transition temperature (approximately 10\u00b0C), PK provides excellent vibration damping performance under different rotation speeds.<\/p>\n\n\n\n Theoretically, materials with low Tg, high mass, and low stiffness have higher damping effects.<\/p>\n\n\n\n PK Characteristics \u2014 High Impact Resistance<\/strong><\/strong><\/p>\n\n\n\n Under low-temperature conditions, PK material demonstrates excellent impact strength compared with PBT material.<\/p>\n\n\n\n Sample photos after impact testing at -30\u2103:<\/p>\n\n\n\n PK Characteristics \u2014 Excellent Chemical Resistance<\/strong><\/strong><\/p>\n\n\n\n Polyketone is one of the plastics with excellent chemical resistance and can effectively resist the attack of various chemicals.<\/p>\n\n\n\n Its main chain consists of C-C segments, enabling it to maintain excellent stability when exposed to chemicals such as acids, alkalis, salts, and solvents (except strong acids and strong alkalis).<\/p>\n\n\n\n Its chemical resistance is comparable to PPS, providing higher safety and durability in complex chemical environments.<\/p>\n\n\n\n After immersion in 38% H<\/strong>2<\/sub><\/strong>SO<\/strong>4<\/sub><\/strong> for 24 hours:<\/strong><\/strong><\/p>\n\n\n\n The PA66 GF30 sample strip (left) shows degradation, while the PK GF30 sample strip (right) remains unchanged.<\/p>\n\n\n\n PK Characteristics \u2014 Excellent Barrier Performance<\/strong><\/strong><\/p>\n\n\n\n PK can effectively block water, oxygen, and organic substances, demonstrating excellent barrier and sealing performance.<\/p>\n\n\n\n Its barrier effect is comparable to EVOH.<\/p>\n\n\n\n PK Characteristics \u2014 Low VOCs<\/strong><\/strong><\/p>\n\n\n\n Due to PK\u2019s unique production process and environmentally friendly formulation, very few small molecules are generated or released.<\/p>\n\n\n\n It does not contain pentachlorophenol* and meets low VOC standards required by various automotive manufacturers worldwide.<\/p>\n\n\n\n Meanwhile, thanks to its low odor characteristics, PK can easily pass odor tests such as VDA 270.<\/p>\n\n\n\n It is suitable for automotive interior applications and provides a safer and more environmentally friendly solution compared with materials such as POM and ABS.<\/p>\n\n\n\n PK Characteristics \u2014 Excellent Dimensional Stability<\/strong><\/strong><\/p>\n\n\n\n PK shows minimal dimensional changes after moisture absorption or water absorption\uff1a<\/p>\n\n\n\n PK Characteristics \u2014 Low Carbon & Environmental Protection<\/strong><\/p>\n\n\n\n Most environmentally demanding applications are related to water-contact fields\uff1b<\/p>\n\n\n\n OM cannot be used in some applications due to formaldehyde emission concerns.<\/p>\n\n\n\n PA applications may be limited due to dimensional stability and hydrolysis stability issues.<\/p>\n\n\n\n PK can be used in food-contact and medical applications and meets toxicity and biocompatibility certification requirements.<\/p>\n\n\n\n Its excellent barrier properties can effectively extend food shelf life during storage.<\/p>\n\n\n\n Its extremely low VOC emissions provide enhanced safety.<\/p>\n\n\n\n Polyketone is an environmentally friendly engineering plastic suitable for water-contact, food-contact, and medical-related applications. It has obtained relevant food-contact certification reports.<\/p>\n\n\n\n Based on years of research and development of PK formulations, WDF has developed more than 100 grades, including:<\/p>\n\n\n\n WDF has established its proprietary brand INNOKETONE\u00ae and obtained third-party certifications including:<\/p>\n\n\n\n Application Examples<\/strong>\u2014\u2014<\/strong>INNOKETONE<\/strong>\u00ae<\/sup><\/strong> PK<\/strong><\/p>\n\n\n\n If you look closely, PK materials can be found in structural components across various industries, including home appliances, new energy, electric vehicles, intelligent robots, packaging, kitchenware, medical applications, and more.<\/p>\n\n\n\n PK has already been playing an important role around us, quietly helping create a more convenient and comfortable living environment.<\/p>\n\n\n\n Meanwhile, with continuous technological development, PK demonstrates many advantages compared with traditional materials and has become a new material choice, such as:<\/p>\n\n\n\n 1<\/strong> <\/strong>Automotive Applications<\/strong><\/p>\n\n\n\n Advantages:<\/strong><\/strong><\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Electronic water valves<\/p>\n\n\n\n \u00b7 Integrated flow plates<\/p>\n\n\n\n \u00b7 Connectors<\/p>\n\n\n\n \u00b7 High-voltage battery connection plates<\/p>\n\n\n\n 2<\/strong> <\/strong>Wear-Resistant Components<\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Heat resistance<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Gears<\/p>\n\n\n\n \u00b7 Bearing bushings<\/p>\n\n\n\n \u00b7 Helmet protective components<\/p>\n\n\n\n \u00b7 Rod centralizers<\/p>\n\n\n\n 3<\/strong> <\/strong>Food Contact Applications<\/strong><\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Safety and environmental protection<\/p>\n\n\n\n \u00b7 Heat resistance<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Hydrolysis resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Food conveyor belts<\/p>\n\n\n\n \u00b7 Pipe fittings<\/p>\n\n\n\n \u00b7 Coffee machine components<\/p>\n\n\n\n \u00b7 Cutting boards<\/p>\n\n\n\n 4<\/strong> <\/strong>Toy Applications<\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Safety and environmental protection<\/p>\n\n\n\n \u00b7 Heat resistance<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Toy frames<\/p>\n\n\n\n \u00b7 Wear-resistant toy components<\/p>\n\n\n\n 5<\/strong> <\/strong>Packaging Applications<\/strong><\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Safety and environmental protection<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Hydrolysis resistance<\/p>\n\n\n\n \u00b7 Barrier performance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Cosmetic packaging<\/p>\n\n\n\n \u00b7 Pumps<\/p>\n\n\n\n 6<\/strong> <\/strong>Water Contact Applications<\/strong><\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Safety and environmental protection<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Hydrolysis resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Water purifier components<\/p>\n\n\n\n \u00b7 Water meters<\/p>\n\n\n\n 7<\/strong> <\/strong>Cleaning Appliance Applications<\/strong><\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Heat resistance<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Hydrolysis resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Floor cleaning machine components<\/p>\n\n\n\n \u00b7 Robot vacuum cleaner components<\/p>\n\n\n\n 8<\/strong> <\/strong>Pipe Applications<\/strong><\/strong><\/p>\n\n\n\n Advantages<\/strong>\uff1a<\/strong><\/p>\n\n\n\n \u00b7 Impact resistance<\/p>\n\n\n\n \u00b7 Wear resistance<\/p>\n\n\n\n \u00b7 Heat resistance<\/p>\n\n\n\n \u00b7 Chemical resistance<\/p>\n\n\n\n \u00b7 Hydrolysis resistance<\/p>\n\n\n\n \u00b7 Elastic recovery<\/p>\n\n\n\n Applications:<\/strong><\/p>\n\n\n\n \u00b7 Oil & gas pipelines<\/p>\n\n\n\n \u00b7 New energy cooling pipes<\/p>\n\n\n\n From structure to performance, from daily life to engineering applications, INNOKETONE\u00ae PK material is demonstrating unlimited possibilities through its excellent characteristics. WDF continues to explore improved-performance and lower-carbon modification solutions, enabling materials to meet functional requirements while better supporting sustainable development. In the future, WDF will continue to drive innovation, explore the potential of PK materials in more green application fields, and work together with partners to create a sustainable future. <\/p>",
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"rendered": " Many people may not yet have an in-depth understanding of PK material itself. As one of WDF\u2019s key products, let us take this opportunity to explore and gain a deeper understanding of the unique characteristics of PK. A New-Generation Green Engineering Material As one of WDF\u2019s key products, PK material has attracted increasing attention due […]<\/p>",
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