PPS 6565A6日本宝理---Precauti*** for setting molding conditi***:
(1) Barrel temperature
When the barrel temperature under the hopper is excessively reduced, the friction between barrel and screw will tend to increase.
If there is no problem with fluidity, a small drop in temperature will help reduce retention discoloration. Especially for non black molding products, the best setting is 300-320 ℃.
(2) Mold temperature
The die temperature has a great influence on the properties.
From the appearance, dimensional stability, heat resistance and creep resistance, the mold temperature should be higher than 130 ℃ but not lower than 120 ℃.
(3) Injection pressure
Generally, the injection pressure of 30-100mpa is preferred. In order to reduce flash, low pressure forming is recommended.
(4) Injection rate
In order to obtain good appearance, high speed injection should be carried out. However, high speed injection is easy to cause warpage and scorch, so as long as the appearance is good, there is no need to overuse high speed injection.
(5) Back pressure
In order to keep the measurement stable, it is suggested to set the back pressure at 2 ~ 5MPa. When the measurement is unstable, the back pressure can be slightly increased to 8-10mpa.
(6) Screw speed
Generally 40-100rpm is suitable. The rotation speed should not exceed 200 rpm, otherwise it will cause glass fiber cutting and resin heating.
(7) Retention in barrel
(1) Barrel temperature
When the barrel temperature under the hopper is excessively reduced, the friction between barrel and screw will tend to increase.
If there is no problem with fluidity, a small drop in temperature will help reduce retention discoloration. Especially for non black molding products, the best setting is 300-320 ℃.
(2) Mold temperature
The die temperature has a great influence on the properties.
From the appearance, dimensional stability, heat resistance and creep resistance, the mold temperature should be higher than 130 ℃ but not lower than 120 ℃.
(3) Injection pressure
Generally, the injection pressure of 30-100mpa is preferred. In order to reduce flash, low pressure forming is recommended.
(4) Injection rate
In order to obtain good appearance, high speed injection should be carried out. However, high speed injection is easy to cause warpage and scorch, so as long as the appearance is good, there is no need to overuse high speed injection.
(5) Back pressure
In order to keep the measurement stable, it is suggested to set the back pressure at 2 ~ 5MPa. When the measurement is unstable, the back pressure can be slightly increased to 8-10mpa.
(6) Screw speed
Generally 40-100rpm is suitable. The rotation speed should not exceed 200 rpm, otherwise it will cause glass fiber cutting and resin heating.
(7) Retention in barrel
Even if durafide remains in the barrel for a long time, its viscosity will not increase significantly. Therefore, the use of hot runner is effective.
PPS 6565A6日本宝理---物理性能 额定值 单位制 测试方法
密度 1.96 g/cm³ ISO 1183
吸水率 (23°C, 24 hr) 0.010 % ISO 62
机械性能 额定值 单位制 测试方法
拉伸应力 125 MPa ISO 527-2
拉伸应变 (断裂) 1.0 % ISO 527-2
弯曲模量 18200 MPa ISO 178
弯曲应力 165 MPa ISO 178
冲击性能 额定值 单位制 测试方法
简支梁缺口冲击强度 4.5 kJ/m² ISO 179/1eA
热性能 额定值 单位制 测试方法
热变形温度 (1.8 MPa, 未退火) 275 °C ISO 75-2/A
线形热膨胀系数
流动 1.0E-5 cm/cm/°C
横向 3.0E-5 cm/cm/°C