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This is the free Material Data Center Datasheet of VANDAR® 4612R - PBT-GF7 - Celanese

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加工/物理特性 - 机械性能 - 热性能 - 电性能 - 其它性能 - 函数
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材料文字说明
Vandar 4612R is a high impact polyester alloy containing 7% glass. It possesses excellent impact properties as well as toughness and moldability. Dimensional stability, chemical resistance, and low moisture absorption are other key features.

Flammability at thickness h (0.85 mm)HB-
加工/物理特性价值单位Test Standard
ISO数据
熔体体积流动速度, MVR 8.5 cm³/10min ISO 1133
温度 250 °C -
载荷 5 kg -
模塑收缩率, 平行 0.7 % ISO 294-4, 2577
模塑收缩率, 垂直 1.3 % ISO 294-4, 2577
机械性能价值单位Test Standard
ISO数据
拉伸模量 2800 MPa ISO 527
屈服应力 50 MPa ISO 527
屈服伸长率 4 % ISO 527
名义断裂伸长率 6 % ISO 527
无缺口简支梁冲击强度, +23°C 60 kJ/m² ISO 179/1eU
简支梁冲击强度, -30°C 50 kJ/m² ISO 179/1eU
简支梁缺口冲击强度, +23°C 14 kJ/m² ISO 179/1eA
简支梁缺口冲击强度, -30°C 5 kJ/m² ISO 179/1eA
热性能价值单位Test Standard
ISO数据
熔融温度, 10°C/min 225 °C ISO 11357-1/-3
玻璃化转变温度, 10°C/min 60 °C ISO 11357-1/-2
热变形温度, 1.80 MPa 92 °C ISO 75-1/-2
热变形温度, 0.45 MPa 200 °C ISO 75-1/-2
维卡软化温度, B 170 °C ISO 306
线性热膨胀系数, 平行 40 E-6/K ISO 11359-1/-2
线性热膨胀系数, 垂直 138 E-6/K ISO 11359-1/-2
厚度为h时的燃烧性 HB class IEC 60695-11-10
测试用试样的厚度 0.8 mm -
电性能价值单位Test Standard
ISO数据
相对介电常数., 100Hz 4.3 - IEC 62631-2-1
相对介电常数., 1MHz 3.8 - IEC 62631-2-1
介质损耗因子, 100Hz 60 E-4 IEC 62631-2-1
介质损耗因子, 1MHz 290 E-4 IEC 62631-2-1
体积电阻率 1E12 Ohm*m IEC 62631-3-1
表面电阻率 1E14 Ohm IEC 62631-3-2
介电强度 26 kV/mm IEC 60243-1
其它性能价值单位Test Standard
吸水性 0.45 % 类似ISO 62
吸湿性 0.2 % 类似ISO 62
密度 1300 kg/m³ ISO 1183
函数
动态剪切模量－温度 , VANDAR® 4612R, PBT-GF7, Celanese
应力－应变. , VANDAR® 4612R, PBT-GF7, Celanese
正割模量－应变. , VANDAR® 4612R, PBT-GF7, Celanese
典型数据
加工方法
注塑
供货形式
粒料
添加剂
润滑剂
特殊性能
高冲击韧性的/经抗冲改性的
耐化学试剂
通用耐化学性
地区供应
北美, 欧洲, 亚太, 中南美洲, 中东/非洲
其他信息
注塑成型
To avoid hydrolytic degradation during processing, Vandar resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-30°F (-34°C) at 250°F (121°C) for 4 hours.
Rear Temperature 450-480(230-250) deg F (deg C)
Center Temperature 460-490(235-255) deg F (deg C)
Front Temperature 470-500(240-260) deg F (deg C)
Nozzle Temperature 470-510(240-265) deg F (deg C)
Melt Temperature 470-510(240-265) deg F (deg C)
Mold Temperature 100-200(40-95 deg F (deg C)
Back Pressure 0-50 psi
Screw Speed Moderate
Injection Speed Fast

Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided, in particular for flame retardant grades. Up to 25% clean and dry regrind may be used.
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