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FAQ
- PVC what chemicals do you need for plastic surface treatment?
- The commonly used techniques: solvent cleaning (skim), corona treatment, short wavelength ultraviolet radiation treatment, sandpaper treatment, sandblasting processing, plasma etching, chemical etching, heat treatment etc..
- I made of plastic raw materials accessories containing benzene, how to remove the teacher, please enlighten!
- Benzene is generally not used as a plastic processing aid, even if mixed with a little, the plastic molding process in the high temperature also make it has long been volatile.
- What kinds of plastic properties can be divided into thermal properties?
- Classification of plastics (100 million nylon)There are many kinds of plastics. There are many kinds of classification methods. They are usually divided into two categories: thermoplastic and thermosetting plastics according to the change of their properties after heating.
- What are the raw materials of foam plastics and how do they come out?
- More bisphenol A epoxy resin, epoxy value of 0.51 ~ 0.22mol/100g. When the viscosity is 25 degrees centigrade, it is 20Pa / S; the viscosity is 130 s at 1Pa.
- Characteristics and uses of CA plastics
- Because of its characteristics and quality of different varieties are different, generally use as general plastics, in addition to avoid the use of related in food packaging, medical devices and health fields, the other is used. For example, car interior and exterior shell, household appliances and other daily necessities, mainly low price.
- Dissolve in 0.3 of the LDPE plastic raw materials what?
- The molecular structure of the conventional LLDPE is characterized by its linear backbone, with only a few or no long branched chains, but contains some short branched chains. Without long branched chains, the crystallinity of polymers is higher.In general, LLDPE resins are characterized by density and melt index. The density is determined by the concentration of comonomer in the polymer chain. The comonomer concentration determines the short branch chain in the polymer. The length of the short branched chain depends on the type of comonomer. The higher the concentration of comonomer, the lower the density of the resin. In addition, the melt index is a reflection of the average molecular weight of the resin, mainly determined by the reaction temperature (solution method) and the addition of chain transfer agents (gas phase method). The average molecular weight is independent of the molecular weight distribution, and the latter is mainly influenced by the type of catalyst.
- How many kinds of raw materials are produced by wrapping plastic film?
- Plastic film raw materials are: PVC, polyethylene, polypropylene, polystyrene and other resins.Commonly used to bundle packaging is LLDPE stretch wrap film, applicable to a variety of logistics packaging, packaging industry bundled! I can see it in Ming Bao. Yes, please!
- What is the material of plastic flat screen?
- Plastic flat net (also known as plastic breeding net) is plastic material in the extruder heating melting through the extrusion into a special rotating head is provided with a plurality of holes inside and outside of the die, the molten plastic flowing through the die pore forming two shares melt silk, because of head rotation, two shares converge to a continuous filament thus, the formation of network, after cooling into the net.
