What should be noted when selecting plastic additives
Plastic additives not only make polymers easier to process, but also largely compensate for the shortcomings of polymers themselves, such as improving product performance and extending service life. So it can be said without exaggeration that without the combination of processing aids, there would be no development of the plastic industry.
Whether the plastic additives are selected correctly directly affects the processing progress, product performance, and service life. When choosing additives, you need to consider the following four main issues:
1. Compatibility between additives and polymers
Compatibility refers to the ability of additives and polymers to mix well and evenly without phase separation and precipitation. Additives must exist stably in the product for a long time in order to play their due role, so additives with good compatibility with polymers should be selected as much as possible.
2. Adaptability of additives to processing conditions
The same polymer requires different plastic additives due to different processing methods.
3. Fully leverage the synergistic effect of assisting Jing
A type of plastic often uses multiple additives, which are located in the same system and often affect each other. If combined properly, they can have a synergistic effect when used, which is called “synergy”.
4. Restrictions on additives due to the use of the product
The selection of plastic additives is often limited by the purpose of the product, such as the fact that plastic products always come into contact with people, especially those used in food packaging and blood transfusion materials, which are closely related to human health.