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PA66塑胶原料
the impact resistance also join synthetic rubber, such as EPDM and the SBR, etc. PA66 viscosity is low, the liquidity is very good (but not as PA6). PA66 for many solvent has good solubility, but to acid and some other chlorinating agent resistance is weak. With super impact resistance, toughness and resistance to negative 60 degrees low temperature, suitable for roller, body, sled shoes and engineering parts, silent gear, etc. Injection mold process conditions
Drying process: if processing former material is sealed, then there is no need to dry. However, if the storage vessel is opened, it is recommended that in 85 c hot air drying process. If the humidity is more than 0.2%, but also the need for 105 c, 12 hours of vacuum drying.
Melting temperature: 260 ~ 290 c. For glass additive products for 275 ~ 280 c. Melting temperature should avoid to higher than 300 c. Mold temperature: it is recommended that 80 c. Mold temperature will influence the degree of crystallinity, degree of crystallinity will affect the product’s physical characteristics. For thin wall plastic parts, if you use less than 40 c mold temperature, the plastic parts of the degree of crystallinity will changes with a time, in order to keep the stability of the geometry of the plastic parts, the need for annealing treatment.
Injection pressure: usually in 750 ~ 1250 bar, depends on the material and product design.
Runner and gate: because of PA66 the coagulation time is very short, so gate position is very important. Gate aperture not less than 0.5 * t (here t for plastic parts thickness). If you use hot runner, gate size should compare with conventional runner small a few, because of hot runner can help prevent premature solidification materials. If you use submarine gate, gate of the minimum diameter should be 0.75 mm.
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产品名称：美国杜邦A66 101L Zytel |
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