If you are looking for a suitable PVC compound supplier, he needs you to provide an important parameter: density/specific gravity. Do you know what density means in PVC granules? How to calculate and judge the density of PVC pellets?
From the perspective of soft materials and hard materials, the density of soft materials is usually around 1.25-1.8, and the specific gravity of rigid PVC is above 1.36-2. From the perspective of product performance, low density usually means higher quality performance, and high density also corresponds to higher product weight. So why do some people choose PVC compounds with a high gravity? This is caused by the special requirements of some products. For example, some product application manufacturers require that the product must reach a certain weight to meet their use requirements. At this time, if the specific gravity of PVC particles is not increased, it cannot meet their requirements.
Weight is equal to relative density. Now it is generally density. The formula for density is: mass divided by volume. PVC compounds are a composite material, which is made of PVC resin + Caco3 + plasticizer + stabilizer + lubricant + Others
Each raw material has its own specific gravity, such as:
PVC resin 1.385g/cm3
Calcium powder density: 2.7g/cm3
Plasticizer: DOTP-0.981g/cm3, DOP-1.044g/cm3, different plasticizers have different densities
Stabilizer: 1.02-1.12g/cm3
With these parameters, we can calculate the specific gravity of the finished granules by different addition amounts.
In addition, different products require different specific gravity. If you are confused about how much density of PVC particles to use, you can leave us a message whatsapp/wechat: 008619353098766
如果你在寻找合适的PVC颗粒供应商，他需要你提供一个重要参数：比重。你知道比重在PVC颗粒中代表什么意思吗？ 如何计算和判断PVC颗粒的比重呢？
从软料和硬料的角度来分，通常软料的密度在1.25-1.8左右，硬料的比重1.36-2以上。从产品性能角度来看，通常是密度低其质量性能要高，密度高同样对应的是更高的产品重量。那么为什么还有人选择比重大的pvc颗粒呢?这是因为一些产品的特殊要求造成的，比如一些产品的应用厂家要求产品必须达到一定的重量才能符合其使用要求，这时如果不加大pvc颗粒料的比重是无法满足其要求
体重等于相对密度，现在一般来说是密度，密度的公式是：质量除以体积。Pvc颗粒是一种复合材料，它是由PVC树脂+钙粉+增塑剂+稳定剂+润滑剂+Others
每种原料都有自己的比重，比如：
PVC树脂1.385g/cm3
钙粉比重：2.7g/cm3
增塑剂：DOTP-0.981g/cm3, DOP-1.044g/cm3, 不同增塑剂密度不同
稳定剂：1.02-1.12g/cm3
有了这些参数，我们就可以通过不同添加量推算出成品颗粒的比重。
此外，不同制品要求的比重不同，如果你对于用多大密度的pvc颗粒感到困惑，可以给我们留言.