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POM 270M 低分子量,高流动

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 M270™
 
CELCON® M270™ CA33378 WHITE 800043
CELCON® M270™ CA33589 WHITE WETLOOK 9234
CELCON® M270™ CA33776 WHITE
CELCON® M270™ CB32979 ALMOND 923068
CELCON® M270™ CB33905 IVORY
CELCON® M270™ CB34627 BISCUIT 966296
CELCON® M270™ CC33727 GRAY
CELCON® M270™ CC33931 GRAY
CELCON® M270™ CC33993 GRAY
CELCON® M270™ CC34380 GRAY
CELCON® M270™ CC34424 SILVR CALYPSO 9663
CELCON® M270™ CC34670 DOLPHIN 967000
CELCON® M270™ CD3068 BLACK
CELCON® M270™ CF2001 NATURAL
CELCON® M270™ CG33556 BLUE
CELCON® M270™ CG34002 BLUE
CELCON® M270™ CG34689 BLUE WILLOW 966867
CELCON® M270™ CG3690 BLUE
CELCON® M270™ CL33401 YELLOW
CELCON® M270™ CL43504 YELLOW
CELCON® M270™ CL7860 YELLOW
CELCON® M270™ CR33558 PINK
CELCON® M270™ CS3067 RED
 
CELCON 270M™ | POM | Unfilled
 
Description
Celcon® acetal copolymer grade M270™ is a lower molecular weight, high - flow grade designed for superior moldability in multi-cavity, intricate or hard to fill molds applications.
 
Chemical abbreviation according to ISO 1043-1: POM
 
Please also see Hostaform® C 27021.
 
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.
 
ISO Data Mechanical properties Value Unit Test Standard
Phys Density 1410 kg/m³ ISO 1183
Melt volume rate (MVR) 23 cm³/10min ISO 1133
MVR test temperature 190 ISO 1133
MVR test load 2.16 kg ISO 1133
Mold shrinkage - parallel 1.7 % ISO 294-4
Mold shrinkage - normal 1.6 % ISO 294-4
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) 2800 MPa ISO 527-2/1A
Tensile stress at yield (50mm/min) 67 MPa ISO 527-2/1A
Tensile strain at yield (50mm/min) 8 % ISO 527-2/1A
Tensile creep modulus (1h) 2300 MPa ISO 899-1
Tensile creep modulus (1000h) 1300 MPa ISO 899-1
Flexural modulus (23℃) 2750 MPa ISO 178
Charpy impact strength @ 23℃ 116 kJ/m² ISO 179/1eU
Charpy impact strength @ -30℃ 108 kJ/m² ISO 179/1eU
Charpy notched impact strength @ 23℃ 5.2 kJ/m² ISO 179/1eA
Notched impact strength (Izod) @ 23℃ 5.4 kJ/m² ISO 180/1A
Therm Thermal properties Value Unit Test Standard
Melting temperature (10℃/min) 166 ISO 11357-1,-2,-3
DTUL @ 1.8 MPa 103 ISO 75-1/-2
DTUL @ 0.45 MPa 156 ISO 75-1/-2
Coeff.of linear therm. expansion (parallel) 1.1 E-4/℃ ISO 11359-2
Coeff.of linear therm. expansion (normal) 1.2 E-4/℃ ISO 11359-2
SpecProd Test specimen production Value Unit Test Standard
Processing conditions acc. ISO 9988-2 - Internal
Rheo Rheological Calculation properties Value Unit Test Standard
Density of melt 1200 kg/m³ Internal
Thermal conductivity of melt 0.155 W/(m K) Internal
Specific heat capacity of melt 2210 J/(kg K) Internal
Ejection temperature 165 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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