What is the basic classification of plastic industry additives?
Plastic industry additives are roughly divided into:
(i) Functional additives. The characteristic of functional additives is that they have certain special functions and improve the performance of plastics to a certain extent.
(ii) Process additives. The characteristic of process additives is that they do not directly improve the performance of plastics, but improve the processability of plastics, thereby obtaining high-quality products. For example, internal lubricants, external lubricants, etc.
(1) What is an internal lubricant?
Internal lubricants are lubricants between the carbon chains of plastic molecules. They are used to improve the fluidity of plastic melts and improve processing performance. If internal lubricants are added, the fluidity of the melt will be improved and easy to process.
What is an external lubricant?
External lubricants are lubricants that reduce the sticky resistance between the plastic melt and the steel surface of the processing equipment. They make the plastic melt have good processing characteristics. For example, without external lubricants, it is impossible to make a film material with a smooth surface. With the help of external lubricants, a film material with high surface smoothness can be made with high tensile strength, high puncture resistance and high tear resistance.
(3) Plastic lubricants are both internal and external.
Baozhuan New Material Silicone Powder , which has both internal and external lubricants , not only improves the fluidity of the melt. And it can improve the surface gloss and smoothness of the product.
(III) What are the effects of process additives?
The efficiency of process additives can be roughly summarized as follows:
(1) Reduce power consumption during plastic processing. For example, after using Baozhuan new material additives, the fluidity in the production process can be increased, thereby reducing injection resistance, reducing the torque of the extrusion screw, and reducing the load on the machine, thereby saving electricity and extending the service life of the machine.
(2) Improve the mechanical strength, surface smoothness and surface brightness of plastic products. For example, Baozhuan new material additives can improve the plasticization efficiency of plastic melts, and therefore can correspondingly increase the longitudinal and transverse stretching of film materials. In addition, it can also improve the microscopic smoothness of the surface of film materials to improve the brightness and quality of the surface.
