旭化成POM 4520

旭化成POM 4520---Automotive industry, electrical / electronic, household goods, industrial applications
Note: copolymer, with good flow rate, medium viscosity

产品用途： 汽车工业，电气/电子，家居用品，工业应用

备注说明： 共聚物，具有良好的流量，中等粘度

4520 physical property table
Basic performance rating unit test method
Melt flow rate
9g/10minASTM D1238
(190℃/2.16kg)9g/10minISO 1133
Water absorption (24 hr) 0.2% ASTM D570
Test method of physical performance rating unit
Specific gravity 1.41 g / cm ASTM D792, ISO 1183
Molding shrinkage
(Flow)1.6-2%ASTM D955,ISO 294-4
(Across Flow)1.6-2%ISO 294-4
Rockwell hardness ASTM d785
(M-Scale)80
(R-Scale)115
Mechanical properties - rating units - Test methods
Tensile modulus 2800 MPa ISO 527-2
Yield tensile stress 66 MPa ISO 527-2
Tensile stress 61 MPa ASTM D638
elongation at break 
60%ASTM D638
55%ISO 527-2
Bending modulus 2600 MPa ASTM D790
Bending strength: 88 MPa ASTM D790
Taber abrasion resistance (1000 cycles) 14 mg ASTM d1044
Charpy Notch Impact Strength (23 ℃) 7 kJ / M ISO 179 / 1ea
Izod notched impact strength: 59 J / M ASTM D256
Thermal performance rating unit test method
Hot deformation temperature
(0.45MPa,unannealed)158℃ASTM D648
(0.45MPa,unannealed)156℃ISO 75-2/B
(1.8MPa,unannealed)110℃ASTM D648
(1.8MPa,unannealed)100℃ISO 75-2/A
Linear thermal expansion coefficient of flow direction: 0.0001 cm / cm / ℃ ASTM e831
Flame retardant grade HB UL 94

随着汽车的轻量化，汽车工业对POM的需求量逐年增加。
改性POM可制成汽车的油箱盖、汽油注入口、燃油泵壳、车用暖风扇、散热器旋塞、方向盘指示器开关、速度表齿轮及数字轮、流量阀、汽车保险杠零件、刮水器零件、车窗升降装置、汽车门把手、特殊轴承等部件。
改性POM主要用于各种转速和负荷的齿轮和轴承，各种泵的结构件、外壳和叶轮、传送带链片、推土机轴瓦、火车轴瓦头、电动工具零件、密封垫圈、掀按式紧固件等。