Can the physical characteristics of plastic injection molding machines after the thermoplastic molding their secondary processing into thermoplastics and thermosetting plastics, this process is suitable only for injection molding machines available for secondary processing of thermoplastics, such non-crystalline plastic separator crystallinity categories. Highly crystalline plastic mechanical strength, heat resistance, but poor transparency, a plastic such as polyethylene, polypropylene, polybutene-1, poly-4-methylpentene-1, polyoxymethylene, polyamide, polyester, polyvinylidene chloride, fluorine plastic, chlorinated polyether. Non-crystalline plastic mechanical strength is poor crystalline plastic, but the heat resistance and transparency, this kind of plastic polyvinyl chloride, polystyrene, ABS, PMMA, polycarbonate, polyphenylene oxide, polysulfone and the like.
Different types of plastic, although having some similarities, but personality differences, be sure to do the proper selection of products or aids simulation time can produce compliant products. The temperature of the distillation column by gasoline gasoline temperature adjustment control back flow display by the rotameter. Light diesel gasoline distillation bottoms.
Injection molding machine thermoforming mold thermoplastic molding plaster molds and tin mold needs. Only the transition plaster mold is a mold, the final mold is manufactured of tin.
Because gypsum hemihydrate and water after water into gypsum (CaSOO), gypsum plaster water solubility than half a much lower solubility, gypsum constantly condense, and hemihydrate gypsum continues to dissolve, eventually all turned into gypsum, in the process of change, all the excess water to evaporate. Because the condensation was gypsum volume increased by 1%, so with plaster made of male and female mold, the inner and outer surface smooth, easy to crack tin mold.
Tin melting point of 231.85 ℃, ordinary tin ingots in the crucible of iron melts very easily, and most of thermoformed plastic optimum molding temperature of 120 ~ 220 ℃, so the male and female molds made of tin with a qualified majority of the heat molded plastic processing, for polysilicate, nylon, oriented polyester, polysulfone plastic, optimum molding temperature exceeds 231 ℃, is available, lead, tin, antimony alloy (80% lead, 10% tin, antimony 10% ) made mold forming. Consider shrinkage plastic injection molding machine, the design of the die size to be bigger, so that the final size made accurate parts.
Colored plastic injection molding machine in order to make plastic products with a desired color can be added organic dyes or inorganic pigments in plastics, the former mostly with good miscible resin suitable for transparent products manufactured; the latter in the resin dispersion very good, the system is suitable for transparent products.
Commonly used organic dyes are: 1) azo dyes (including insoluble and poorly soluble), such as aniline yellow, light yellow, golden red C, Li Rubine; 2) phthalocyanine pigments such as sodium Costello Blue Mongolia , Mona Los Tello green.
Commonly used inorganic pigments are: 1) class chrome yellow, the color with the mixture in an amount depending, PbCrO higher the content of the deeper the color, there are lemon yellow, orange chrome yellow and red chrome molybdenum; 2) cadmium pigments cadmium yellow, cadmium red, cadmium selenide; 3) iron oxide red iron oxide, iron oxide yellow, iron oxide black; 4) class titanium dioxide, barium titanium white, titanium white calcium; 5) carbon black. Above dyes and pigments are easy to buy.
The method of plastic mixed colors, with red, yellow and blue as the primary color, with a group called the secondary color hue to another color, other colors redistributed between the secondary colors called tertiary colors.
China plastic pipe injection molding machine process
Alina
