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POM &lparFull-title&colon Polyformaldehyde&rpar&comma is a engineering plastics of non-side-chain&comma substantial density&comma higher crystalline and linear polymer&comma which is praised “CZPT Metal”&comma and has comprehensive excellent performances&comma this sort of as&colon put on-resistance&comma large hardness&comma anti-impregnant&comma good rigidity &lparTensile modulus of elasticity&rpar&comma chemical balance&comma isolation resistance and dimensional security&interval
POM has extensively used in Vehicle industries&comma electronic and electric powered goods&comma commodity&comma pipeline & fittings&comma exact equipment and so on&comma which can be as an alternative of the bronze&comma Zinc&comma tin and other metals&period
Besides POM-H&comma is typically copolymerized with ethylene oxide jointly&comma in order to keep away from the melting of POM material in the higher temperature&period POM-H has the much better performances than POM-C in its large crystalline&comma mechanical energy and rigidity&time period
And POM-C has the much better performances than POM-H in its low melting point&comma temperature stability&comma fluxion attribute and machining capacity&time period
Father more&comma POM-H&plusPTFE&comma which is manufactured from the Delrin POM Resin that maxed Teflon fiber symmetrically&comma has the lower co-successful of frication&comma great lubrication&comma use-resistance&comma non-creepage resistance&period
Material parameter table&colon
Residence | Item No&time period | Device | POM-C | POM-H | POM-H&plusPTFE | |
Mechanical Qualities | 1 | Density | g&solcm3 | 1&period41 | one&period43 | 1&period50 |
2 | Water absorption&lpar23ºC in air&rpar | &percnt | &period20 | &period20 | &period17 | |
3 | Tensile energy | MPa | 68 | 78 | fifty five | |
four | Tensile strain at crack | &percnt | 35 | 35 | 10 | |
five | Compressive stress&lparat two&percntnominal strain&rpar | MPa | 35 | 40 | 37 | |
six | Charpy effect energy &lparunnotched&rpar | KJ&solm2 | &geq150 | &geq200 | &geq30 | |
seven | Charpy impact toughness &lparnotched&rpar | KJ&solm2 | seven | ten | 3 | |
eight | Tensile modulus of elasticity | MPa | 3100 | 3600 | 3200 | |
9 | Ball indentation hardness | N&solmm2 | a hundred and forty | one hundred sixty | one hundred forty | |
ten | Rockwell hardness | – | M84 | M88 | M84 |