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Plasticization of PVC and plasticizer
by：CSSSLD
2021-01-23
Alkali type lead salt is not into lead oxide inorganic acid or organic acid salt of lead salt.
Lead oxide itself has very strong absorption ability of oxidation of hydrogen, as the main heat stabilizer.
Because of lead oxide with yellow, usually with a white base type instead of lead oxide lead salt heat stabilizers.
Alkali type lead salt heat stabilizers, decomposition of HCI is to capture the main function of PVC, thus inhibiting HCI for catalytic role - decomposition reaction
Injection molding processing factories.
the interaction force between molecules of thermoplastics, its size is related to the structure of the polymer. Intermolecular forces make polymer not only has certain mechanical strength, but also affect its processing and many other performance. Is the thermoplastic processing by heat increases the activity of the polymer molecules, weaken the intermolecular forces, make have plasticity. But for some strong polarity, molecular inter-atomic forces, has the heat-sensitive polymer, often considerable difficulties, PVC is. For this type of plastic, the plasticizing processing as needed, in order to improve the plasticity, at the same time improve the elasticity and flexibility.
zinc soap and cadmium metal soap, soap, such as highly active after the substitution of chlorine atoms or spread to catch HCI can generate highly reactive metal chlorides, and their presence to accelerate PVC removal HCI reaction. Therefore, must remove them, phosphite ester can have this effect. The varieties of heat stabilizer is various, and various compound with new heat stabilizer, and the classification of heat stabilizer is more complex, but from the perspective of using the PVC heat stabilizer points mainly thermal stability, auxiliary heat stabilizer and composite heat stabilizer.
in order to improve the plasticity of the plastic to increase its flexibility and added to the low volatile substances known as plasticizer in plastics. Is the main purpose of plasticizer weaken the forces between the polymer molecules, lower melting temperature and melt viscosity, improve the processing performance, using temperature range, to increase the flexibility of plastic products and various other necessary properties. Plasticizer is usually high boiling point, low volatile liquid, solid or low melting point. Of all the organic fertilizer, plasticizer production and consumption are first. Among them, the PVC plasticizer 80% of plasticizer production again More than 85%.
PVC macromolecule chain - irregular distribution of thermal decomposition of trigger sources Structure of allyl chloride and so on, due to the chlorine atoms and lively, when heated so easy removing hydrogen chloride, formation of conjugated polyene structure. At the initial stage of hydrogen chloride and conjugated polyene structure can further promote the thermal decomposition of PVC continue, forming a chain degradation reaction. PVC thermal decomposition and removal of hydrogen chloride reaction once you begin, will make further removing hydrogen chloride reaction becomes easier.
growth techniques can be traced back to ancient times, such as made pottery clay water, water is a plasticizer. Ancient people put the oil added to the asphalt as the sealing material for the ship, oil which have the effect of plasticizer. Industrial use of plasticizer is using camphor from 1868 added to the cellulose nitrate, creating the modern concept about plasticizer and plasticizing effect. But the rapid development of the plasticizer industry, thanks to the advent of PVC.
if you want to prevent or delay the decomposition of PVC, will eliminate the molecular chain of thermal decomposition of the source, such as PVC allyl chloride and double bond structure of the atom, and eliminate all the chain rupture had catalytic activity decomposition substance, such as injection molding processing PVC decomposition removal of hydrogen chloride, etc. Conjugated double bond was partition, chlorine atoms into chlorine atom, increase the stability of the molecular chain. Mercaptan organotin can also play a similar role.
more excellent articles: according to the use of the products material selection, click directly.
http://www。 csssld。 cn//html/2017/Info_1208/717。 HTML
changshu smoothly da plastic products factory website: http://www. csssld。 Cn /
more wonderful articles, immediately search: changshu da plastic products factory smoothly
the interaction force between molecules of thermoplastics, its size is related to the structure of the polymer. Intermolecular forces make polymer not only has certain mechanical strength, but also affect its processing and many other performance. Is the thermoplastic processing by heat increases the activity of the polymer molecules, weaken the intermolecular forces, make have plasticity. But for some strong polarity, molecular inter-atomic forces, has the heat-sensitive polymer, often considerable difficulties, PVC is. For this type of plastic, the plasticizing processing as needed, in order to improve the plasticity, at the same time improve the elasticity and flexibility.
zinc soap and cadmium metal soap, soap, such as highly active after the substitution of chlorine atoms or spread to catch HCI can generate highly reactive metal chlorides, and their presence to accelerate PVC removal HCI reaction. Therefore, must remove them, phosphite ester can have this effect. The varieties of heat stabilizer is various, and various compound with new heat stabilizer, and the classification of heat stabilizer is more complex, but from the perspective of using the PVC heat stabilizer points mainly thermal stability, auxiliary heat stabilizer and composite heat stabilizer.
in order to improve the plasticity of the plastic to increase its flexibility and added to the low volatile substances known as plasticizer in plastics. Is the main purpose of plasticizer weaken the forces between the polymer molecules, lower melting temperature and melt viscosity, improve the processing performance, using temperature range, to increase the flexibility of plastic products and various other necessary properties. Plasticizer is usually high boiling point, low volatile liquid, solid or low melting point. Of all the organic fertilizer, plasticizer production and consumption are first. Among them, the PVC plasticizer 80% of plasticizer production again More than 85%.
PVC macromolecule chain - irregular distribution of thermal decomposition of trigger sources Structure of allyl chloride and so on, due to the chlorine atoms and lively, when heated so easy removing hydrogen chloride, formation of conjugated polyene structure. At the initial stage of hydrogen chloride and conjugated polyene structure can further promote the thermal decomposition of PVC continue, forming a chain degradation reaction. PVC thermal decomposition and removal of hydrogen chloride reaction once you begin, will make further removing hydrogen chloride reaction becomes easier.
growth techniques can be traced back to ancient times, such as made pottery clay water, water is a plasticizer. Ancient people put the oil added to the asphalt as the sealing material for the ship, oil which have the effect of plasticizer. Industrial use of plasticizer is using camphor from 1868 added to the cellulose nitrate, creating the modern concept about plasticizer and plasticizing effect. But the rapid development of the plasticizer industry, thanks to the advent of PVC.
if you want to prevent or delay the decomposition of PVC, will eliminate the molecular chain of thermal decomposition of the source, such as PVC allyl chloride and double bond structure of the atom, and eliminate all the chain rupture had catalytic activity decomposition substance, such as injection molding processing PVC decomposition removal of hydrogen chloride, etc. Conjugated double bond was partition, chlorine atoms into chlorine atom, increase the stability of the molecular chain. Mercaptan organotin can also play a similar role.
more excellent articles: according to the use of the products material selection, click directly.
http://www。 csssld。 cn//html/2017/Info_1208/717。 HTML
changshu smoothly da plastic products factory website: http://www. csssld。 Cn /
more wonderful articles, immediately search: changshu da plastic products factory smoothly
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