PVC塑料造粒机
纯净的聚氯乙烯，只是一种白色的粉未，也就是说它只是一种高分子树脂，不能用于直接加工产品；由于合成工艺路线的不同，这种树脂粉一般分为两类：一种是疏松型树脂，另一种是紧密型树脂。我们常用的聚氯乙烯胶料都是颗粒状的，它是多组份的塑料，除了前面讲的聚氯乙烯树脂粉以外，还必须加入增塑剂增加它的流动性，加入稳定剂提高它的热稳定性，加入润滑剂提高它的脱模性，以及填料，着色剂，偶联剂等；因为各组份的含量不同，就形成了各种机械性能差异很大的不同硬度的PVC颗粒；它一般用IP度数表示；PVC颗粒大体分为：软质PVC，硬质PVC。 外观 因PVC胶料所含的组份不同，它的外观差异很大。有的透明如玻璃，也有不透明的；有的非常柔软，耐折迭，有类橡胶弹性；也有硬质的，象ABS，机械性能优良，可以做工程材料。大部分的PVC有轻微毒性，但不致于一接触就能中毒；也有食品级的PVC胶颗粒。燃烧特征 PVC难燃，离火即灭；但燃烧时，火焰上端呈黄色，下端呈绿色（绿色是氯离子的特有色谱），冒白色烟雾（白色烟雾是HCL气体与水结合的产物）；燃烧时，胶料发软，同时，发出刺激性的气味。
PVC plastic granulator
Pure polyvinyl chloride is only a white powder, which means it is a polymer resin and cannot be used for direct processing of products.Due to the different synthetic process routes, this kind of tree powder is generally divided into two types: one is loose resin and the other is compact resin.We often use the PVC plastic material is granular, it is more plastic components, in addition to speak in front of the PVC tree powder, must also join plasticizer increase its liquidity, add stabilizer to improve its thermal stability, add lubricant to improve its release, as well as the packing, colorants, coupling agent, etc.;Because the content of each component is different, the PVC granules with different hardness are bbbbed.It is generally expressed by IP number;PVC particles are generally divided into: soft PVC, hard PVC.The appearance is very different due to the different components of PVC.Some are glassy and opaque;Some of them are very soft, folding, and rubber elastic;Also has the hard, elephant ABS, the mechanical property is good, can do the engineering material.Most PVC is mildly toxic, but can be toxic without contact;There are also food grade PVC glue particles.The burning characteristic PVC is difficult to ignite, and the fire is extinguished;But when it burns, the upper end of the flame is yellow, and the lower end is green (green is the characteristic color of chloride ion), and white smoke (white smoke is the product of the combination of HCL gas and water).When burned, the gel is soft, and at the same time, it emits a pungent odor, like hydrochloric acid.
