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  • Additives that must be added to medical PVC

    The decomposition temperature of pure polyvinyl chloride (PVC) resin is very close to the plasticization temperature. When heated to 130C~140C, it will decompose and release hydrogen chloride (HCl) gas, which has great effects on the material itself and the environment. influences. In actual use, pure polyvinyl chloride resin is rarely used to process produc...
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  • What are the additives in pvc

    For example: thermal stability, plasticizers, lubricants, fillers, pigments, UV absorbers, etc. function, mechanism of action, material propertiesPVC (Polyvinyl Chloride) Chemical and Physical Properties Rigid PVC is one of the most widely used plastic materials. PVC material is a non-crystalline material. In actual use, PVC materials often add stabilizers, ...
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  • What are the functions of PE wax in PVC?

    PE wax has a very long non-polar carbon chain with a very strong polar center. The part of the structure that is compatible with the plastic in polarity plays the role of internal lubrication, and the part that is incompatible with the plastic in polarity plays the role of external lubrication and demoulding.An important application of PE wax is in PVC proce...
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  • PVC commonly used additives

    Additives are indispensable raw materials in the production of PVC plastics, which are determined by the inherent characteristics of PVC resin. PVC additives are divided into two categories:  (1) Process additives are necessary for plastic molding processing. For example, stabilizers and lubricants in the production of hard pvc plastics, without them, they c...
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  • PVC heat stabilizer mechanism

    PVC products decompose significantly at 100~150℃. Ultraviolet light, mechanical force, oxygen, ozone, hydrogen chloride, and some active metal salts and metal oxides will greatly accelerate the decomposition of PVC. Thermal oxidative aging of PVC is more complicated. In reality, we add an appropriate amount of PVC heat stabilizer in the production process of...
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  • Stability mechanism of PVC calcium zinc stabilizer

    Causes of PVC degradation1) Thermal oxidation decomposition;2) Increase the cross-linking of large free radicals in the absence of oxygen;3) The influence of stereoregularity on degradation;4) Light degradation;5) Oxidative removal of HCl;6) Radiation degradation;7) Molecular chain scission caused by critical stress introduced during processing;8) The influe...
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  • PVC heat stabilizer

    Main heat stabilizerPVC stabilizers mainly include lead salts, fatty acid metal salts, and organic tins.1. Lead salts include all lead salts except lead soap, most of which contain lead salts of lead monoxide (PbO). Lead salt stabilizers are the most commonly used and most effective stabilizers for PVC, but they are not suitable for transparent products; lea...
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  • Why does PVC need a heat stabilizer?

    PVC is one of the most produced plastic products in the world. PVC is a white powder with an amorphous structure with a small degree of branching and poor stability to light and heat. Due to the extremely poor processing stability of PVC, the melting process is as high as 160C, and PVC decomposes when the temperature reaches 140C, so PVC resin must be proces...
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  • PVC non-toxic stabilizer introduction

    PVC heat stabilizer is a class that can prevent or reduce the degradation or cross-linking of polymers due to heat during processing and use. Additives to extend the service life of composite materials. Commonly used PVC stabilizers can be classified into bases, fatty acid soaps, organotin compounds, composite heat stabilizers and pure organic compounds acco...
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  • Non-toxic PVC stabilizer

    1. IntroductionBecause of its poor thermal stability, PVC will degrade when the temperature is higher than 110 ℃, the color will turn yellow, and the mechanical properties will decrease. Therefore, it is necessary to add heat stabilizers during its processing. The traditional non-toxic composite stabilizers are mainly Compound stabilizer of calcium stearate ...
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  • Safety issues of PVC heat stabilizer

    People pay more and more attention to the safety of PVC composite stabilizers. The safety of PVC composite stabilizers should be considered from three aspects, one is the safety of the raw material processor, the second is the safety of the user, and the third is the safety of the waste to the environment. The safety protection of the processor can be solved...
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  • PVC heat stabilizer

    The application range of PVC heat stabilizer is still expanding, which shows the great potential of its development. The company will spare no effort to tap its potential and let it create more benefits for everyone. PVC heat stabilizer is produced by adopting internationally advanced technology and control and testing equipment. It is a heat stabilizer whic...
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