Supply the United States DuPont extrusion injection molding grade the POM 16-2 

 Product Description 
 U.S. DuPont of POM 16-2: The melt flow rate of 4 g/10min, (190 the ° C/2.16kg), flexural modulus (stiffness) of 2500 Mpa, with the notched impact resistance of 70 J / M, the hardness of 114 R, the thermal deformation temperature of 100 degrees. Ultrasonic weldability, mechanical properties and good stability, good wear resistance, hardness, good chemical stability, creep resistance, high strength, low coefficient of friction, good electrical properties, resistance to fatigue, injection and extrusion molding. Suitable for electrical and electronic equipment, a variety of accessories, plumbing equipment, gear and valve components, automotive interior parts, rollers, bearings, pipe, sheet, conveyor, pump components, rubbing equipment and so on. 

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 Polyacetal resin 
 Polyoxymethylene (POM) scientific name polyethylene oxide, formaldehyde, also known as the Race Steel, Special Steel. POM surface smooth, shiny, hard and dense material, the color was a pale yellow or white, absorbent small, long-term use in the range of -40 degrees to 100 degrees. Its wear resistance and lubricity than the vast majority of engineering materials excellent, good oil resistance, peroxidase performance, acid and the intolerance UV radiation, the POM electrical insulation better, almost independent of temperature and humidity. 

 POM into the POM (POM-H) and acetal copolymer (POM-K). POM density, crystallinity, melting point, but the poor thermal stability, narrow processing temperature (10 degrees), the stability of pH slightly worse; acetal copolymer density, crystallinity, low melting point, but the good thermal stability not easily broken down, the processing temperature (50 degrees). 

 POM characteristics and uses: (1) the low coefficient of friction and good geometric stability, especially for the production of gears and bearings; (2) good resistance to high temperature, can be used to pipe fittings (pipe valves, pump housing) , lawn equipment, etc.; (3) The tough, flexible, low-temperature creep resistance; (4) high crystallinity lead to a very high shrinkage (1.2-3.0%); (5) the melting point is obvious once it reaches the melting point, melt viscosity rapidly decreased. 

 POM process conditions (for reference only, the actual situation of the specific grades may be): dried (1): If the raw materials storage in a dry environment, do not require drying treatment, drying conditions of 80-90 ° C, 2 hours. (2) POM melting point is 190-230 degrees, copolymer formaldehyde melting point is 190-210 degrees. (3) mold temperature of 80 - 105 degrees in order to reduce mold shrinkage can choose a higher mold temperature. Injection pressure of (4) :700-1200bar. (5) injection speed: moderate or high injection speed.