POM gravity material prices

POM is a surface smooth, shiny, hard and dense material, yellow or white, thin-walled portion translucent. Combustion characteristics are easy to burn, away from the fire continued to burn, the flame yellow top, blue bottom, dripping melted, there is a strong irritant smell of formaldehyde, fish stench. POM as a white powder, usually opaque, good color, the proportion of 1.41-1.43 g / cc, mold shrinkage 1.2-3.0% molding temperature 170-200 ℃, dry conditions 80-90 ℃ 2 hours. POM long-term heat resistance is not high, but short-term up to 160 ℃, which are short-term heat resistance than polyethylene POM POM copolymer high above 10 ℃, but the long-term heat rather than homo copolymer POM POM high around 10 ℃. Long-term use in the temperature range of -40 ℃ ~ 100 ℃. POM easy to decompose, the decomposition temperature of 240 degrees. Decomposition irritating and corrosive gases occur. Therefore, mold steel corrosion resistance should be selected material. Mechanical properties of POM strength, high stiffness, good elasticity, anti-friction wear resistance. Excellent mechanical properties, specific strength of up to 50.5MPa, specific stiffness up to 2650MPa, very close to the metal. Mechanical properties of POM with small changes in temperature, co-POM POM than homo change slightly larger. POM high impact strength, but the impact is less than conventional ABS and PC; POM notch sensitive, can drop as much as 90% of the notched impact strength. POM fatigue strength is very prominent, after 10 alternating loads, fatigue strength up to 35MPa, while PA and PC only 28MPa. POM and PA is similar to creep resistance, at 20 ℃, 21MPa, when 3000h only 2.3%, and little affected by temperature. POM friction coefficient of small, good wear resistance (POM> PA66> PA6> ABS> HPVC> PS> PC), the limit PV value is large, self-lubricating. POM products on time grinding, easy to produce a noise similar to screaming high loads. Electrical performance POM good electrical insulation, almost independent of temperature and humidity; dielectric constant and dielectric loss over a wide temperature, humidity and little change in the frequency range; excellent arc resistance, and in high temperature maintained. Dielectric strength and thickness of the POM is related to the thickness of 0.127mm is 82.7kV / mm, a thickness of 1.88mm when 23.6kV / mm. Environmental performance POM intolerance alkali and oxidant, acid and weak acid has a certain stability. POM good solvent resistance, resistance to hydrocarbons, alcohols, aldehydes, ethers, gasoline, lubricants and weak base, and maintain a considerable chemical stability at high temperatures. Water absorption, good dimensional stability. POM bad weather, long under ultraviolet light, the mechanical properties decreased surface chalking and cracking. Forming crystalline materials, narrow melting range, melting and solidification, melt temperature slightly lower than the melting temperature, crystallization. Liquidity medium. Absorption is small, without the drying process. Edit this paragraph modified POM POM ⒈ reinforcing main reinforcing material is glass fiber, carbon fiber or glass spheres, and glass fiber most commonly used, the enhanced mechanical properties can be increased by 2 to 3 times, heat distortion temperature was raised above 50 ℃. ⒉ high lubricating graphite was added in the POM POM, F4, molybdenum disulfide, lubricants and low molecular weight PE, can improve its lubricating properties. For example, adding 5 parts POM F4, can reduce the friction coefficient of 60%, wear resistance is increased 1-2 fold. Again, the addition of a liquid lubricant in the POM, can greatly improve the wear resistance and limit PV value. In order to improve the dispersion of the oil must be added carbon black, barium sulfate, aluminum hydroxide, ethylene-propylene rubber, oil-absorbing carrier. 5% oil POM frictional increase of 72%, the limit PV value of up to 3.9MPa · m / s (pure POM is 0.213MPa · m / s), DELRIN a thermoplastic resin, is also an important engineering plastics. Catalytic polymerization of trioxane and terminated in the system, but also by formaldehyde gas purification catalytic polymerization system, but Mainly ago. Available injection molding, extrusion, blow molding process. Mainly used as gears, cams, bearings, bushings, gaskets, valves, fluid pipes, handles, zippers, and other anti-corrosion container. Used in automotive, machinery, instruments, agricultural machinery, chemicals, construction and household goods and so on. The main chain consists of a single structural units of the polymer. Translucent to opaque white powder or pellets, the relative density of 1.42, a melting temperature of 175 ~ 179 ℃. Mechanical strength than the acetal copolymer of about 10% to 20%, slightly higher degree of crystallinity. But the high temperature aging and alkali resistance is poor, and the processing temperature range is narrow. Tensile strength 68.6 ~ 70.6MPa, flexural strength 96.04MPa, compressive strength 123.48MPa, impact strength (notched) 69.4J / m; heat distortion temperature (1.82MPa) 124 ℃, long-term use temperature of 90 ℃; permittivity (106Hz) 3.7, a volume resistivity of 1 × 1015Ω · cm Specifications: Material T0.5-100 * 600 * 1200mm bar ∮3-300 * 1000mm color: black, white Origin: USA DELRIN Delrin plastic particles with high temperature extrusion through an extruder out after extrusion port corresponding mold plates of different thicknesses. This material is a high melting point, high-crystalline engineering thermoplastics. Operating temperature from minus 60 degrees to 100 degrees. Because of its high strength and very smooth surface with excellent sliding properties and wear resistance. Basically no tension. It has high thermal stability and chemical stability. Characteristics: high mechanical strength, rigidity, high hardness; excellent elasticity; good creep resistance; high even at low temperatures, impact strength; very good dimensional stability; sliding performance, wear; excellent mechanical properties; Physiology inertia, suitable for contact with food. Application: roller bearings, bearing rings, architectural hardware pieces, cog, pump casing, screws, fine processing and garment industry components. Specifications: Plate (white / black): thick x width x length = (2 ~ 100) * 610 * 1200mm Bar (white / black): RD (3-250) * 1000 mm. The company mainly operating in Taiwan, Switzerland, Germany , Korea, Japan and other well-known imported, premium brand of engineering plastics, including: engineering plastics: PAI (TORLON), PEEK (polyether ether ketone), PPS, polyetherimide PEI (ULTEM), PES, polyether polysulfone PSU, poly ** POM, polyvinylidene fluoride PVDF, polytetrafluoroethylene PTFE, polycarbonate PC, PET, PBT, PET-P, UPE, HDPE, MC-NYLON, PA6, PMMA, PVC, ABS, PP, PE and other sheet / bar. Anti-static material: South Korea anti-static acrylic panels, anti-static PVC plate, beige anti-static POM board POM black conductive plate, the Japanese anti-static nylon plate, anti-static electricity board as a whole. Insulating materials: wood imported electricity, domestic, wood, epoxy board (FR-4), synthetic stone, UNILATE, Delrin AF, urea plate (urine cccccccc prime resin plate), and other OM board .POM rods POM tube (POM plate rod ): English name Polyoxymethylene, commonly known as the race plate race bar. POM plastic particles with high-temperature extrusion through an extruder, after extrusion port corresponding mold plates of different thicknesses. Is a high melting point, high-crystalline engineering thermoplastics. Good features POM plate has, very suitable for automatic lathe machining, particularly suitable for the manufacture of precision parts. POM plate is a no no side chain, high-density, high-crystalline linear polymer with excellent overall performance. POM plate is a surface smooth, shiny, hard and dense material, yellow or white, long-term use in the -40- 100 ° C temperature range. Its wear resistance and self-lubricating plastic is superior than most, and good oil, peroxide-resistant performance. Very acid, alkali and impatience impatience moonlight ultraviolet radiation. POM is a crystalline plastic, melting point significantly, once they reach the melting point, melt viscosity decreased rapidly. When the temperature exceeds a certain limit or the melt heated for too long, it will cause decomposition. POM has good overall performance in thermoplastics is the hardest, it is one of the mechanical properties of the plastic material closest varieties of metal, its tensile strength, flexural strength, fatigue resistance, abrasion resistance and electrical properties are very good, long-term use between -40 degrees - 100 degrees. POM-C / H (black and white): copolymer and POM POM represent all things, POM copolymer low melting point, thermal stability, chemical resistance, flow properties, hydrolysis resistance, alkali resistance and thermal oxidation demotion, POM superior workability. POM homopolymer with high crystallinity, creep out, lower coefficient of thermal expansion, wear resistance, mechanical strength, stiffness, heat distortion temperature of geometric acetal copolymer good. (POM semi-finished products currently on the market commonly used POM-C copolymer) high main characteristics of POM plate mechanical strength, stiffness, high hardness, excellent elasticity, slip resistance and abrasion resistance, good creep resistance, even at low temperatures, high impact strength, very good dimensional stability, excellent mechanical properties, physical inertia, suitable for contact with food. You can not use common epoxy adhesive glue AB. POM board applications: POM is widely used in the manufacture of sliding rotating machinery, precision parts, gears, bearings. Use industry throughout the automotive, electronics, clothing, medical, machinery, sports equipment and other fields. POM board Size: 0.5mm-100mm * 510 / 610mm * 1000 / 2000mm