PBT美国杜邦LW9320

产品详情

PBT美国杜邦LW9320

杜邦进口PBT LW9320 BK851钓具卷线器

杜邦进口PBT LW9330低翘曲 

杜邦进口PBT LW9420 NC010工程热塑材料

工程塑料PBT S600

塑胶原料PBT S650FR阻燃

进口增强PBT SK602 高刚性 

进口高强度PBT SK603 

进口高硬度PBTSK608

原装柜货PBT SK609 NC010

进口阻燃PBT SK641FR 原厂原包

进口高性能PBT SK642FR 用于家用电器

杜邦PBT SK643FR国际品牌

盖德网PBT SK645FR*店

INJECTION MOLDING PROCESS FOR REINFORCED PBT: Dry Treatment: this material is easily hydrolyzed at high temperatures, so dry treatment before processing is important. The recommended air drying conditions are 120 degrees, 6 to 8 hours, or 150 degrees, 2 to 4 hours. Humidity must be less than 0.03% . If drying with hygroscopic dryer, the recommended conditions for 150 degrees, 2.5 hours, melting temperature: 225 ~ 275 degrees, the recommended temperature: 250 degrees. MOLD TEMPERATURE: 40 ~ 60 degrees for unreinforced materials. The cooling cavity of the mould should be well designed to reduce the bending of the plastic parts. The heat must be lost quickly and evenly. It is suggested that the diameter of cooling cavity should be 12mm. The selection of the temperature of the cylinder is very important for PBT, such as low temperature, poor plasticization, products will cause material shortage, depression, uneven shrinkage and matte phenomenon. But the temperature is too high, can cause the nozzle to salivate seriously, overflow the edge, the color turns dark, even degrades. In general, the barrel temperature is controlled at 240 ~ 280 °C, and the glass reinforced PBT is controlled at 230 ~ 260 °C. The nozzle temperature should be controlled at 5 ~ 10 degrees lower than the front of the barrel temperature. * * * * Pressure: PBT Melt has low viscosity and good fluidity. Medium * * * Pressure can be used, generally 60-9OMPa / glass fiber reinforced PBT is 80-1OOMPa, usually * * Pressure increases with the thickness of plastic parts, but do not exceed 1OOMPa, otherwise it will make demoulding difficult. * * * Speed: * * * Speed should be used as quickly as possible (as PBT solidifies quickly) . Runner and gate: Circular Runner is recommended to increase pressure transfer (empirical formula: runner diameter plastic part thickness + 1.5 mm) . Various types of gates can be used. Hot runner may also be used, but care must be taken to prevent leakage and degradation of the material. The gate diameter should be between 0.8 and 1.0 * T, where t is the thickness of the plastic part. If it is a submerged gate, it is recommended that the diameter of the switch is 0.75 mm and the cover is 0.75 mm. The picture tube and the lampshade are chemical resistant, heat resistant and easy to use, water resistant and stable, easy to warp the product, and the connector can be used in high humidity environment after being reinforced, pOLYBUTYLENE terephthalate (PBT) has good fluidity, the changes of door and window parts, resistance to friction and electric hair dryer, body panel 0.2% , PBT and PBT as a result, reinforced PBT processing method: drying 105 °C ~ 120 °c 4 ~ 8 hours. Dry material used in half an hour Sol 220 °C ~ 270 °C retention time less than 7 minutes * * Pressure 300 ~ 700kg / CM2 screw speed 60 ~ 100RPM mold temperature 30 °C ~ 80 °C back pressure 3 ~ 10kg / CM2 why energy performance, e clock Shell, poor hydrolysis resistance, in C, electronic and electrical industry, such as television transport machinery parts, forming machinability and only take a few seconds, to large parts also toughness, mainly used for PBT, wiring board, size stability, weather resistance, with motor housing, all kinds of secondary processing molding insulation, good Molding Properties Modified PBT,