| Name | Lustering agent for plastic |
| Synonyms | Lustering agent for plastic |
products called plastic brighteners on the market can be divided into 4 categories.
1. polyethylene wax-feature: polymer of low molecular weight wax and ethylene, melting point 101 degrees. The main use in plastics, as a lubricant, can improve the fluidity of the melt, but too much will be chromatography, so that the product is unqualified, especially wire.
2. high melting point wax-feature: low molecular weight synthetic wax has a melting point of about 110 degrees. it is mainly used in plastics as an external lubricant.
3. graft copolymer of polymer and wax-characteristics: molecular weight is relatively high, melting point can reach 210 degrees. The main use on plastics is to form a film on the surface of plastic products to improve the brightness and smoothness of the surface of plastic products.
4. imported plastic brightener (really imported, only granular) is characterized by relatively high molecular weight (about 17000) and melting point up to 160 degrees. The main use on plastics is to form a film on the surface of plastic products to improve the brightness and smoothness of the surface of plastic products.
According to the definition of plastic brightener in Japan's Industrial Products Management Regulations, plastic brightener products must have the following characteristics
1. the brightness is high and lasting, and cannot be easily erased. the surface is covered.
2, does not reduce the physical properties of plastic products and the performance of secondary processing.
3. It has excellent thermal stability and chemical stability, and does not decompose and volatilize during processing.
4. no corrosion of equipment and no pollution of products.
5. non-toxic.
from the definition of foreign plastic brighteners, there are only 3 or 4 types of products that can be called plastic brighteners in our market.
because they all have a more complex grafting process, and the use of free-based graft copolymerization, so in order to reduce costs they can only be processed into coarse powder or particles. For powder, powder with high grafting ratio will be finer (about 100 mesh). For the particles, the grafting ratio is high, and the particles will be more brittle.
As far as plastics are concerned, due to the different molecular structures of various plastics, it is difficult to have a plastic brightener that can be used in various plastics. The following suggestions are given for this purpose:
1. choose a plastic brightener suitable for your plastic raw materials.
2. plastic brightener lower than 25-35 degrees shall be selected according to the molding temperature.