pvc Features 1. amorphous material, moisture absorption, poor mobility, in order to improve mobility, prevent air bubbles, should advance to dry. 2. easy to decompose, especially at elevated temperatures in contact with steel, copper easier decomposition (decomposition temperature of 200 degrees). Forming small temperature range, the material temperature must be strictly controlled. 3. When using pvc pipe screw injection machine and straight nozzle product supply, the aperture should be large, to prevent stagnation dead material. 4. Die casting system should be thick, the gate should be large pvc pipe supply section, should be cooled mold, mold temperature 30-60 degrees pvc pipe supply direct, material temperature 160-190. pvc material processing a pigment in certain metal ions will lead to PVC resin thermal oxidative decomposition. Determination method pigmented polyethylene was heated to 180 ℃ when the change of hue. Since the pigment contained in the metal ions to promote accelerated decomposition of PVC, resulting in change of hue. Meanwhile, note that the same added lake red PVC can produce different color, such as those containing calcium, the color difference is small; manganese is large color difference, which is due to the manganese metal promoter PVC dehydrochlorination due. Sulfide-based colorant (such as cadmium red, yellow, etc.) used in PVC coloring, coloring agents may be due to the decomposition of hydrogen sulfide release. Such colorants should not be mixed with lead stabilizers in order to avoid generating the black lead sulfide. 2, PVC insulation on electrical influence pigment as cable materials like PVC and polyethylene pvc pipe fittings supply, you should consider the electrical properties of the colored. Especially for its own PVC insulation resistance than polyethylene is poor, so the impact is even greater pigment. Instructions, select its inorganic pigments coloring PVC electrical insulation is better than the organic pigment Qingdao pvc pipe Supply | pvc pipe Supply | Sea Widex Widex provided by Qingdao Rubber Material Co., Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal clients. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!