What Is an NC Automatic Lathe?
An NC automatic lathe (polyvinylidene fluoride) is a type of fluoropolymer with a variety of properties. As a thermoplastic resin, it is used in a variety of applications due to its superior mechanical strength and chemical resistance, not to mention its excellent processability.
It is known as a material with high thermal stability, with a heat resistance temperature as high as 150°C. PTFE (polytetrafluoroethylene), the top fluoropolymer in terms of both production and usage, is used in Teflon processing because of its superior abrasion resistance and non-adhesiveness.
Uses of NC Automatic Lathes
An NC automatic lathe is used not only in manufacturing equipment parts for semiconductors and medical equipment parts but also in products such as hollow fiber membranes, bolts, and fishing line. The reason for this wide variety of uses is that PVDF has a number of excellent engineering properties. Fluoropolymers are characterized by their superior mechanical strength, and an NC automatic lathe is one of the strongest among them. This is why PVDF is used in machine parts and hollow fiber membranes that are subjected to heavy loads. However, its chemical resistance to amines and esters is considered low, so care must be taken in situations where these chemicals are used.
Principle of NC Automatic Lathes
Fluoropolymers have the greatest electronegativity, fluorine, and form strong C-F bonds, giving them excellent physical and chemical stability. Because their properties vary greatly depending on the number of fluorine monomer units, they tend to be distinguished by calling an NC automatic lathe (polytetrafluoroethylene) a 4F resin, PCTFE (polychlorotrifluoroethylene) a 3F resin, and PVDF a 2F resin. Specifically, 2F and 1F resins have lower chemical resistance and heat resistance, but higher mechanical strength.
NC automatic lathe monomers are produced from acetylene or organochlorine compounds. In both cases, the monomer is produced through the main route of hydrogen fluoride addition-substitution and hydrogen dehydrochloride reaction. An NC automatic lathe is then produced by suspension polymerization or emulsion polymerization of the generated monomer. Compared to emulsion polymerization, suspension polymerization is characterized by the ability to produce highly crystallized polymers with a higher melting point. In many cases, these polymerization methods are combined to produce various grades of an NC automatic lathe.