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POM M50 中粘度,韧性良好

添加时间:2013-05-31  信息来源:http://www.simibc.com/  作者:苏州希普能塑料
泰科纳POM M50
 
CELCON® M50 CC34873 GRANITE
CELCON® M50 CD32228SP33 BLACK
CELCON® M50 CF2001 NATURAL
CELCON® M50 CG34793 BLUE
CELCON® M50 CG34874 BLUE
 
CELCON M50 | POM | Unfilled
 
Description
Celcon® M50 is a extrusion and injection molding grade with an intermediate viscosity for good processability with higher toughness than general purpose grades.
 
Chemical abbreviation according to ISO 1043-1: POM
 
Other Processing
Injection Molding
Standard reciprocating screw injection molding machines with a high compression screw (minimum 3:1 and preferably 4:1) and low back pressure (0.35 Mpa/50 PSI) are favored. Using a low compression screw (I.E. general purpose 2:1 compression ratio) can result in unmelted particles and poor melt homogeneity. Using a high back pressure to make up for a low compression ratio may lead to excessive shear heating and deterioration of the material.
 
Melt Temperature: Preferred range 182-199℃ (360-390℉). Melt temperature should never exceed 230℃ (450℉).
 
Mold Surface Temperature: Preferred range 82-93℃ (180-200℉) especially with wall thickness less than 1.5 mm (0.060 in.). May require mold temperature as high as 120℃ (250℉) to reproduce mold surface or to assure minimal molded in stress. Wall thickness greater than 3mm (1/8 in.) may use a cooler (65℃/150℉) mold surface temperature and wall thickness over 6mm (1/4 in.) may use a cold mold surface down to 25℃ (80℉). In general, mold surface temperatures lower than 82℃ (180℉) may hinder weld line formation and produce a hazy surface or a surface with flow lines, pits and other included defects that can hinder part performance.
 
Film Extrusion
Standard extruders with a length to diameter ratio of at least 20:1 are recommended. The screw should be a high compression ratio of at least 3:1 and preferably 4:1 to assure good melting and melt homogeneity. The design should be approximately 35% each for feed and metering sections with the remaining 30% as the transition zone.
 
Melt temperature:160-220℃ (320-430℉)
 
Blow Molding
Consult product information services.
Calandering
Consult product information services.
Compression Molding
Consult product information services.
 
ISO Data Mechanical properties Value Unit Test Standard
Phys Density 1410 kg/m³ ISO 1183
Melt volume rate (MVR) 4.3 cm³/10min ISO 1133
MVR test temperature 190 ISO 1133
MVR test load 2.16 kg ISO 1133
Water absorption (23℃-sat) 0.75 % ISO 62
Humidity absorption (23℃/50%RH) 0.2 % ISO 62
Mech Mechanical properties Value Unit Test Standard
Tensile modulus (1mm/min) 2500 MPa ISO 527-2/1A
Tensile stress at yield (50mm/min) 63 MPa ISO 527-2/1A
Tensile strain at yield (50mm/min) 12 % ISO 527-2/1A
Flexural modulus (23℃) 2400 MPa ISO 178
Charpy notched impact strength @ 23℃ 8.5 kJ/m² ISO 179/1eA
Notched impact strength (Izod) @ 23℃ 7.5 kJ/m² ISO 180/1A
Therm Thermal properties Value Unit Test Standard
Melting temperature (10℃/min) 165 ISO 11357-1,-2,-3
DTUL @ 1.8 MPa 97 ISO 75-1/-2
Coeff.of linear therm. expansion (parallel) 1 E-4/℃ ISO 11359-2
Coeff.of linear therm. expansion (normal) 1 E-4/℃ ISO 11359-2
SpecProd Test specimen production Value Unit Test Standard
Processing conditions acc. ISO 9988-2 - Internal
 
Processing
Pre Drying
Drying is not normally required. If material has come in contact with moisture through improper storage or handling or through regrind use, drying may be necessary to prevent splay and odor problems.
 
Drying time (h):3
Drying temperature (℃):80 - 100
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