描述
Pbt+25%gf Fr V0聚对苯二甲酸丁二醇酯耐热原材料Pbt颗粒。树脂PBT塑料材料
2。高冲击PBT
3。耐磨性好
Pbt+25%gf Fr V0聚对苯二甲酸丁二醇酯耐热原料Pbt颗粒
产品详细信息
pbt+25%gf fr v0聚对苯二甲酸丁二醇酯耐热原料pbt颗粒
1）气缸温度。例如，如果温度过低，塑化不良，产品就会缺料、下垂、收缩不均、无光泽。但温度过高，会导致喷嘴严重流涎，溢出边缘，颜色变深，甚至退化。通常，钢瓶温度控制在240~280℃，玻璃纤维增强PBT温度控制在230~260℃。喷嘴温度应控制在气缸前部以下5~10℃
3）注射压力。PBT熔体粘度低，流动性好，可采用中等注射压力，一般为60~90MPa，玻璃纤维增强PBT为80/100。通常注射压力随塑性厚度的增加而增加，但不得超过100 MPa，否则会使脱模困难
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Pbt+25%gf Fr V0 Polybutylene Terephthalate Heat- Resistant Raw Material Pbt Pellet
Specifications
1.Resin-PBT plastic materail
2.High Impact PBT
3.good abrasion resistance.
Pbt+25%gf Fr V0 Polybutylene Terephthalate Heat- Resistant Raw Material Pbt Pellet
Product Details
pbt+25%gf fr v0 polybutylene terephthalate heat- resistant raw material pbt pellet
PBT Main Injection Molding Conditions
1) cylinder temperature. For example, if the temperature is too low and the plasticizing is bad, the product will be short of material, sag, uneven shrinkage and no gloss. But the temperature is too high, will cause the nozzle salivate seriously, overflow edge, the color becomes deeper, even degrades. Usually, the cylinder temperature is controlled at 240~280℃, and the glass fiber reinforced PBT is controlled at 230~260℃. The nozzle temperature should be controlled at 5~10℃ below the front section of the cylinder.
2) mold temperature. The mold temperature is directly related to the dimensional stability, warping deformation, forming period and crystallinity of the product. The PBT is easy to crystallize, even at room temperature, so the mold temperature does not need to be too high, usually 40~60℃, and glass fiber reinforced PBT mold temperature is slightly higher, usually 6080℃.
3) injection pressure. PBT melt viscosity is low, fluidity is good, medium injection pressure can be used, generally 60~90 MPa, glass fiber reinforced PBT is 80/100. Usually the injection pressure increases with the increase of plastic thickness, but not more than 100 MPa, otherwise it will make demoulding difficult.
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