| Characteristics and uses of PVC auxiliaries commonly used? |
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| PVC materials are widely used, with good processing performance, low manufacturing cost, corrosion resistance, insulation and other good characteristics, widely used in the world production and application. PVC resin is easy to decompose, poor fluidity, low impact strength, poor weatherability, so it is necessary to add various kinds of PVC additives in the process to improve its performance. Such as lubricants, heat stabilizers, impact modifiers, processing aids and so on. The functions of PVC additives are: 1. Promote melting and increase elasticity: promote material melting, improve surface gloss, promote die swelling (prevent pull-down lengthening) 2. increase lubricity: improve mold release, prevent bonding, delay melting and reduce torque. Commonly used PVC additives are Sassafras wax polyethylene wax microcrystalline wax, oxidized polyethylene wax, oxidized polyethylene wax and so on. Sasol wax has better electrical properties than paraffin wax, higher melting point and hardness, narrower distillates, and can replace Brazilian palm wax in gloss. It can be used as internal and external lubricants for various plastics, and can be used to produce Duroxone wax and develop more extensive uses. Polyethylene wax has low viscosity, high softening point, good hardness and other properties, non-toxic, good thermal stability, low volatility at high temperature, dispersion of pigments, both excellent external lubricity, and strong internal lubrication, can improve the efficiency of plastic processing, good moisture resistance at room temperature, chemical resistance. Strong and excellent electrical properties can improve the appearance of finished products. It can be widely used in the manufacture of masterbatch, granulation, plastic steel, PVC pipe, hot melt adhesive, rubber, shoe polish, leather brightener, cable insulation, floor wax, plastic profiles, ink, injection molding and other products. The microcrystalline wax has good oil absorption property, can form stable and uniform paste with various solvents and waxes, and has emulsifying property. It can be used as processing aids such as shoe oil, automobile wax, polishing wax, floor wax, polishing wax, polishing wax, Chinese medicine pills, protective agent, candle, wax toys, dental materials and cosmetics. Oxidized polyethylene wax has low viscosity, high softening point, good hardness and other special properties, non-toxic, good thermal stability, low volatility at high temperature, excellent dispersion of fillers and pigments, both excellent external lubrication, strong internal lubrication, but also has coupling effect, can improve the efficiency of plastic processing production. It can be used as dispersant, lubricant, brightener and coupling agent for pigments or fillers such as concentrated masterbatch, polypropylene masterbatch, additive masterbatch and filling masterbatch. |
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