POM CELCON M15HP

Celcon? acetal copolymer grade M15HP is a creep resistant, high viscosity polymer
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 f
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 with a 2:1 compression ratio) c

Physical Properties	Metric	English	Comments
Specific Gravity	1.41g/cc	1.41g/cc	ASTM D792
Density	1.41g/cc	0.0509lb/in3	ISO 1183
Density of Compound	1.165g/cc	0.04209lb/in3
Moisture Absorption	0.200 %	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.750 %	0.750 %	ISO 62
Linear Mold Shrinkage, Flow	0.0230cm/cm	0.0230in/in	ISO 294-4
Linear Mold Shrinkage, Transverse	0.0190cm/cm	0.0190in/in	ISO 294-4
Melt Flow	1.50g/10 min	1.50g/10 min	ASTM D1238
	1.30g/10 min @Load 2.16 kg, Temperature 190 °C	1.30g/10 min @Load 4.76 lb, Temperature 374 °F	[cm3/10min]; ISO 1133

POM CELCON M15HP

特点

（1）POM加工前可不用干燥,最好在加工过程中进行预热(80℃左右),对产品尺寸的稳定性有好处.

（2） POM的加工温度很窄(0～215℃),在炮筒内停留时间稍长或温度超过220℃时就会分解,产生刺激性强的甲醛气体.

（3） POM料注塑时保压压力要较大(与注射压力相近),以减少压力降.螺杆转速不能过高,残量要少;

（4） POM产品收缩率较大,易产生缩水或变形.POM比热大,模温高(80～100℃),产品脱模时很烫,需防止烫伤手指.

（5） POM宜在“中压、中速、低料温、较高模温”的条件下成型加工,精密制品成型时需用控制模温

（6）具高机械强度和刚性

（7）最高的疲劳强度

（8）环境抵抗性、耐有机溶剂性佳

（9）耐反覆冲击性强,良好的电气性质,复原性良好,具自已润滑性、耐磨性良好,尺寸安定性优.

应用

.可代替大部分有色金属、汽车、机床、仪表内件、轴承、紧固件、齿轮、弹簧片、管道、运输带配件、电水煲、泵壳、沥水器、水龙头等.