Plastic molds Manufacturers

In the current manufacturing industry, CNC machining is a very important processing method, and many companies and manufacturers are using this method for processing. Mainly because CNC machining takes less time and has high precision. Compared with traditional machining, it can save more time. It can complete parts or products with higher precision and more complex structure. Auto parts processing

Barrel temperature: The temperature that needs to be controlled during the injection molding process includes barrel temperature, nozzle temperature and mold temperature. The temperature of the first two passes mainly affects the plasticization and activity of the plastic, while the latter temperature mainly affects the activity and cooling of the plastic. Each kind of plastic has a different activity temperature, the uniform plastic, because of the source or grade difference, its activity temperature and differentiation temperature are different, this is because of the equilibrium molecular weight and molecular weight dispersion difference, the plasticization process of the plastic in the injection machine of the different example is also different, so the temperature of the selected barrel is not similar.

The brightness of the matrix resin itself has a great influence on the brightness of PP products. In order to improve the brightness of PP injection molding processing, a small amount of polyacrylate resin with excellent compatibility can be added.

PPSU is a slightly amber linear polymer. In addition to strong polar solvents, concentrated nitric acid and sulfuric acid, it is stable to general acids, alkalis, salts, alcohols, and aliphatic hydrocarbons. Partly soluble in ester ketones and aromatic hydrocarbons, soluble in halocarbons and DM. Good rigidity and toughness, temperature resistance, heat oxidation resistance, excellent creep resistance, corrosion resistance of inorganic acids, alkalis, salt solutions, ion radiation resistance, non-toxic, good insulation and self-extinguishing, easy to mold and process.

If the temperature is too high, the low molecular weight substances in the nucleating agent will be dissected and volatilized, which reduces the active ingredients in the nucleating agent, reduces the improvement effect of brightness, and the higher temperature will destroy some crystal nuclei of PP Huaxia, reduce the middle of heterogeneous nucleation, so that the modification effect is low; If the temperature is too low, the evacuation of the nucleating agent is not good, and the brightness effect is poor. Therefore, selecting a suitable molding temperature is particularly difficult to improve clarity.

The code name (UR) is made by the polymerization of polyester (or polyether) and diisocyanamide lipid compounds. Its chemical structure is more complex than that of general elastic polymers. In addition to the recurring carbamate groups, the molecular chain often contains groups such as ester groups, ether groups, and aromatic groups.