Can I melt Delrin?
Melt Quality Delrin® is stable in well maintained and properly set injection units and hot runner systems. If a small amount of melt degradation does occur, it will not lower molecular weight or cause brittleness (which is the case with almost all other polymers).
Is Delrin the same as acetal?
Delrin is a type of acetal homopolymer and therefore generally interchangeable with others of the same class. This means that Delrin still offers the same core benefits of general acetal plastics, such as: Excellent dimensional stability. Friction, fatigue, and abrasion resistance.
Is Delrin good for outdoors?
Delrin® 527UV is typically used for industrial applications exposed to the outdoors in such industries as electronics, communications, transportation, construction and marine.
Is Delrin harder than acetal?
Delrin does tend to have a slightly higher hardness than other acetal plastics. Chemical resistance. Acetal has a better resistance to the effects of hot water and strong caustic solutions when compared to Delrin.
Is Delrin hydrophobic?
Teflon is made of polytetrafluoroethylene. Whereas, Delrin is composed of polyoxymethylene. Teflon has dielectric properties and is used in electric circuits. On the flip side, Delrin is not hydrophobic and does not impact the environment negatively.
Is Delrin brittle or ductile?
Is Delrin Brittle? Because Delrin doesn’t use plasticizing for its toughness, it doesn’t become brittle at low temperatures.
How tough is Delrin?
Delrin plastic works as an excellent replacement for metal because of its high-tensile strength, low-friction and high-wear resistance, creep and warp resistance, and overall durability and toughness.
What is the melt temperature of Delrin?
The melt temperature is taken directly from the molten polymer (using a needle pyrometer) and should be checked periodically during a molding run to ensure that it does not exceed the recommended limits. The recommended melt temperature for standard grades of Delrin®is 215±5 °C (419±10 °F).
What is the melt viscosity of Delrin®acetal resins?
Delrin®acetal resins range in melt viscosity from the Delrin 900 family, the lowest in viscosity (or most fluid), to the Delrin®100 family, the highest (or most viscous). The viscosity of Delrin®does not decrease rapidly as melt temperature increases, in contrast to amorphous thermoplastic resins.
What are the properties of Delrin® acetal?
It is rigid, strong and has a low coefficient of friction against metals, other acetals and plastics. Its superior creep resistance makes acetal a good choice when dimensional stability is needed. Delrin® is a trade name of a homopolymer acetal. See the chart below for details of acetal’s material properties.
What is the optimum hold pressure for Delrin acetal resin?
Optimum hold pressures for Delrin®acetal resins lie in a range of 60–110 MPa (8.7–16.0 kpsi) to achieve a homogeneous crystallization. If higher or lower pressures are used in special conditions, they tend to lead to lower part performance.