描述
防堵塞PBT塑料颗粒
规格
1。树脂PBT塑料材料
2。高冲击PBT
3。耐磨性好
防堵塞PBT塑料颗粒
产品细节
防堵塞PBT塑料颗粒
PBT成型性能
PBT的吸湿性很小，但在高温下水分很敏感。成型和加工时，PBT分子会降解，颜色会变深，表面会产生污渍，所以应该干燥
PBT焊剂具有良好的流动性，容易形成薄壁复杂产品，但应注意模具溢出和喷嘴流涎
PBT有一个明显的熔点，当温度上升到熔点以上时，流动性会突然增加，尤其要注意
PBT成型加工范围窄，冷却结晶快，流动性好，特别适合快速注射
较大的收缩率及其收缩范围为5）PBT，不同方向的收缩率差异比其他塑料更明显
6）PBT对缺口和锐角的反应比较敏感，在这些位置容易出现应力集中，因此承载力大大降低，受力或冲击时容易发生断裂，因此在塑料件的设计中应注意这一点，所有拐角，尤其是内拐角，应尽可能采用圆弧过渡
纯PBT的伸长率可达到200%，因此，具有小凹陷的产品可从模具中强制脱模。然而，填充玻璃纤维或填料后，伸长率大大降低，如果产品中存在凹陷，则无法进行强制脱模
PBT模具短而厚，圆形流道最好。一般改性和未改性PBT均可用于普通流道，而玻璃纤维增强PBT可采用热流道成型
9）点浇口和潜在浇口较大，可降低PBT焊剂的表观粘度，有利于成型，常用作浇口，浇口直径应大大提高
10）浇口最好与型芯腔或型芯对齐，这样可以避免注射，并在模腔中流动时将焊剂降至最低。否则，产品容易出现表面缺陷和性能退化
是一家专业的防堵塞pbt塑料颗粒制造商，您可以从我们工厂以优惠的价格订购高质量的防堵塞pbt塑料颗粒
是一家专业的防堵塞pbt塑料颗粒制造商，您可以从我们工厂以优惠的价格订购高质量的防堵塞pbt塑料颗粒
Anti-block PBT Plastic Pellets
Specifications
1.Resin-PBT plastic materail
2.High Impact PBT
3.good abrasion resistance.
Anti-block PBT Plastic Pellets
Product Details
Anti-block PBT Plastic pellets
PBT Molding Properties
The hygroscopicity of the 1)PBT is small, but the moisture is sensitive at high temperature. When forming and processing, the PBT molecules will be degraded, the color will become deeper, and the surface will produce stains, so it should be dried.
2)PBT the flux has excellent fluidity, it is easy to form thin-walled and complex products, but attention should be paid to mold overflow and nozzle salivation.
3)PBT there is a clear melting point, when the temperature rises above the melting point, the fluidity will suddenly increase, especially attention should be paid.
4)PBT molding processing range is narrow, cooling crystallization is fast, coupled with good fluidity, especially suitable for rapid injection.
A large shrinkage rate and its shrinkage range are 5)PBT, and the shrinkage rate difference in different directions is more obvious than that in other plastics.
6)PBT is sensitive to the reaction of notch and sharp angle, the stress concentration is easy to appear in these positions, so the bearing capacity is greatly reduced, and the fracture is easy to occur when the force or impact, so we should pay attention to this in the design of plastic parts, and all corners, especially the internal corners, should adopt arc transition as far as possible.
The elongation of
7) pure PBT can reach 200%, so the product with small depression can be forced demoulding from the mold. However, after filling with glass fiber or filler, the elongation decreases greatly, and if there is a depression in the product, the forced demoulding can not be carried out.
8)PBT die is short and thick, and the round runner is the best. The general modified and unmodified PBT can be used in the ordinary channel, but the glass fiber reinforced PBT can be formed by hot runner.
9) point gate and latent gate is large, which can reduce the apparent viscosity of PBT flux, is beneficial to molding, and is often used as gate, and the diameter of gate should be greatly improved.
10) The gate is preferably aligned with the core cavity or core, so that the injection can be avoided and the flux is minimized when flowing in the mold cavity. Otherwise, the product is prone to surface defects and deterioration of performance.
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