泰科纳 CELCON POM MC90 含矿物填料,抗撞击良好
工程塑料中的超级英雄--POM,PBT,PPS,LCP,COC
塑料大致分为热固性树脂与热塑性树脂两大类。热塑性树脂可再细分为通用塑料与工程塑料。工程塑料一般是指热塑性树脂中具有100℃以上耐热性的树脂。而耐热性更高，在150℃以上的高温下也能够长时间使用的工程塑料被称为“超级工程塑料”。热塑性树脂有很多种类，大致可分为结晶性树脂与非晶性树脂。如果以耐热性为主轴，则可以下图所示的金字塔型表示。
CELCON®MC90 CA44051 WHITE
CELCON®MC90 CD3501 BLACK
CELCON®MC90 CF3500 NATURAL
CELCONMC90 | POM | Mineral Reinforced
Description
Celcon®acetal copolymer grade MC90 is a mineral reinforced grade offeringlow warp, improved dimensional stability, improved stiffness,improved practical impact and retention of other base resinproperties with good moldability.
Chemicalabbreviation according to ISO 1043-1: POM
Moldingcompound ISO 9988- POM-K, M-GNR, 03-002, M
OtherProcessing
InjectionMolding
Standardreciprocating screw injection molding machines with a highcompression screw (minimum 3:1 and preferably 4:1) and low backpressure (0.35 Mpa/50 PSI) are favored. Using a low compressionscrew (I.E. general purpose 2:1 compression ratio) can result inunmelted particles and poor melt homogeneity. Using a high backpressure to make up for a low compression ratio may lead toexcessive shear heating and deterioration of thematerial.
MeltTemperature: Preferred range 182-199℃ (360-390℉).Melt temperature should never exceed 230℃ (450℉).
MoldSurface Temperature: Preferred range 82-93℃ (180-200℉)especially with wall thickness less than 1.5 mm (0.060 in.). Mayrequire 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.) mayuse a cold mold surface down to 25℃ (80℉).In general, mold surface temperatures lower than82℃ (180℉)may hinder weld line formation and produce a hazy surface or asurface with flow lines, pits and other included defects that canhinder part performance.
ISOData | Mechanicalproperties | Value | Unit | TestStandard |
Phys | Density | 1480 | kg/m³ | ISO1183 |
Moldshrinkage - parallel | 1.9 | % | ISO294-4 | |
Moldshrinkage - normal | 1.6 | |||
Waterabsorption (23℃-sat) | 0.75 | ISO62 | ||
Humidityabsorption (23℃/50%RH) | 0.2 | |||
Mech | Mechanicalproperties | Value | Unit | TestStandard |
Tensilemodulus (1mm/min) | 3000 | MPa | ISO527-2/1A | |
Tensilestress at yield (50mm/min) | 57 | |||
Tensilestrain at yield (50mm/min) | 8 | |||
Flexuralmodulus (23℃) | 2850 | ISO178 | ||
Charpynotched impact strength @ 23℃ | 6.8 | kJ/m² | ISO179/1eA | |
Charpynotched impact strength @ -30℃ | 5.5 | |||
Notchedimpact strength (Izod) @ 23℃ | 6.3 | ISO180/1A | ||
Therm | Thermalproperties | |||
Meltingtemperature (10℃/min) | 165 | ℃ | ISO11357-1,-2,-3 | |
DTUL@ 1.8 MPa | 97 | ISO75-1/-2 | ||
DTUL@ 0.45 MPa | 152 | |||
Coeff.oflinear therm. expansion (parallel) | 1 | E-4/℃ | ISO11359-2 | |
Coeff.oflinear therm. expansion (normal) | 1.2 | |||
SpecProd | Testspecimen production | |||
Processingconditions acc. ISO | 9988-2 | - | Internal |
Processing
PreDrying
Dryingtime (h):3
Dryingtemperature (℃):80- 100
泰科纳 pom CELCON ,POM MC90,含矿物填料pom,抗撞击pom良好,pom是什么塑料
