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What is the role of lead sulfate, dibasic

2013-11-02 by wsdchemical

dibasic lead phosphite 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 stearate 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

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