ACRYMID® 813
聚甲基丙烯酸甲酯-丙烯酸
ACRYMID 813 compound is an amorphous and heat-resistant thermoplastic molding compound based on polymethyl methacrylimide (PMMI).
Typical properties of ACRYMID® heat-resistant molding compounds are:
The special properties of ACRYMID 813 compound are:
Application:
Used for injection molding parts that involve a high degree of thermal stress.
密度 / 比重 | 1.21 |
| ASTM D792 |
熔流率(熔体流动速率) (260°C/3.8 kg) | 16 | g/10 min | ASTM D1238 |
收缩率 - 流动 | 8.0E-3 到 9.0E-3 | in/in | ASTM D955 |
吸水率 (平衡) | < 0.30 | % | ASTM D570 |
洛氏硬度 (M 级) | 97 |
| ASTM D785 |
拉伸模量 | 595000 | psi | ASTM D638 |
抗张强度 | 13100 | psi | ASTM D638 |
伸长率 |
|
| ASTM D638 |
屈服 | 2.0 到 4.0 | % |
|
断裂 | 2.0 到 4.0 | % |
|
弯曲模量 | 551000 | psi | ASTM D790 |
弯曲强度 | 19900 | psi | ASTM D790 |
悬壁梁缺口冲击强度 (73°F, 0.250 in) | 0.25 | ft·lb/in | ASTM D256 |
载荷下热变形温度 (264 psi, 退火, 0.250 in) | 252 | °F | ASTM D648 |
维卡软化温度 | 259 | °F | ASTM D1525 |
线形热膨胀系数 - 流动 (32 到 212°F) | 4.3E-5 | in/in/°F | ASTM D696 |
透射率 (126 mil) | 91.0 | % | ASTM D1003 |
雾度 (126 mil) | < 1.0 | % | ASTM D1003 |
黄度指数 (0.126 in) | < 1.0 | YI | ASTM D1925 |
干燥温度 | 239 | °F |
|
干燥时间 | 2.0 到 3.0 | hr |
|
料筒后部温度 | 482 到 536 | °F |
|
料筒中部温度 | 482 到 536 | °F |
|
料筒前部温度 | 482 到 536 | °F |
|
加工(熔体)温度 | 482 到 536 | °F |
|
模具温度 | 176 到 212 | °F |
|
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