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What is the role of lead sulfate , dibasic

2013-11-02 by wsdchemical

Appearance white powder, no obvious mechanical impurities of lead , Pb% 51.5 ± 1.5 Fineness ( 150 mesh pass ),% ≥ 99.5 Application Features : 1. Thermally stable high performance , both excellent lubrication , water resistance and electrical insulation ; 2 with three salts, two salt and used to improve the process flow ; 3 This product is suitable for rigid PVC , soft goods (such as : wires, cables, CD , etc. ) . Storage and transportation: It should be stored in dry air , moisture, sun , fire , prevent sulfide exposure . Packing: PP woven bag lined with plastic bags. Net weight 20kg. Effect of calcium dibasic lead phosphate as a co- blowing agent commonly used chemical blowing agent , such as AC, high thermal decomposition temperature , decomposition violent phenomenon is easy to produce foam combination , and the decomposition temperature is too high , it will result in degradation of wood burning , so Some co-blowing agents to be added , triggered by the activation of the blowing agent to help the decomposition of it , reducing its thermal decomposition temperature , the decomposition temperature compatible with PVC extrusion temperature ( can be reduced to 160 ℃ ~ 170 ℃). The co-blowing agents are used , tribasic lead sulfate , dibasic lead phosphate , calcium stearate , zinc stearate and so on . AC foaming agent and co-blowing agents used in a proportion of 1/ 1 to 3.

keywords:    pvc-additive