News Details
Polyvinyl chloride plasticizer
2017-12-12 11:14:16
Polyvinyl chloride plasticizer
The intermolecular force exists among the large molecules of thermoplastic polyvinyl chloride. The size of the force depends mainly on the properties of the functional groups in the molecular chain. Polymers with strong polar groups have good mechanical properties because of their strong intermolecular gravitation. If the polarity of polymer group is weak or non-polar base, their molecular chain attraction is very small, so it is easy to process. In order to make polymer with strong polar group easy to form, it is necessary to weaken its intermolecular force. The method can be achieved by increasing the temperature or adding PVC plasticizer.
PVC resin is unstable at high temperature, especially high viscosity polyvinyl chloride (PVC). PVC plasticizers need to be added to achieve the purpose of easy forming.
PVC plasticizer is an organic compound with a certain polarity, temperature is mixed with the polymer, and the polymer molecular thermal motion becomes more intense, so the force chain weakened, in the distance between the expansion of small molecular plasticizer into the polymer chain, polar groups such plasticizer polar groups and polymer molecular interactions instead of polymer polar molecule interactions, the polymer swelling, PVC plasticizer in the non-polar part of the polymer molecular polarity based shielding. And increased the intermolecular distance weakens the intermolecular force van Edward the role of the molecular chain, easy to move, thereby reducing the melting temperature of the polymer, allowing easy molding.
The polymer is the main component in the powder (granular) plastic, which is bonded to a variety of additives and gives the main physical and mechanical properties of the products. Commonly used thermoplastic plastics are polyvinyl chloride, polyethylene, polypropylene, polystyrene, ABS, polycarbonate, polyurethane, nylon, polyformaldehyde and so on. Different polymers have different properties and uses, as far as the same polymer is concerned, because the different properties of the synthetic methods are different. The resins synthesized by the same synthetic method have different properties and uses because of their different grades.
The relative molecular mass and distribution of polymer have great influence on product properties and ingredients. The particle structure and size of resin affect the interaction of plasticizers and solvents.
Two octyl terephthalate (plasticizer DOTP) information:
Shipping port: Shanghai port
Price quotation validity: 15 days
Entry time: 15 days (inspection declaration)
Export authority: the company's right to import and export
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
The relative molecular mass of the resin determines the physical and mechanical properties of the product. The greater the molecular weight, the higher the strength of the product, but the lower the fluidity, the higher the burden and the processing temperature. With the increase of the molecular weight of the polymer, the swelling and plasticizing speed of the polymer decreases, which brings difficulties to the proportioning. Although the relative molecular weight is low, it is beneficial to the proportioning and molding, but the properties of the products are poor. Therefore, the appropriate molecular weight should be selected according to the use of the product and the molding method.
The distribution of relative molecular mass also affects the properties of the products. With the widening of the relative molecular mass distribution, the mechanical properties and thermal properties of the products are reduced. The relative molecular mass distribution also affects the widening of the ingredients and processing process, due to the relative molecular mass distribution is different, have different sensitivity to temperature of plasticizer or other liquid additives show different swelling and absorption ability, which will show different behavior in mixing and molding process.
For example, in the batching process, when the low molecular weight fraction has been fully plasticized, the high molecular weight fraction may still be raw material, which will cause uneven plasticization and affect the mixture with other components, such as stabilizers and coloring agents, and ultimately affect the quality of products. To increase the proportioning temperature, although it is beneficial to the plasticizing of high molecular weight, the low molecular weight grade may be degraded because of overheating.Therefore, the relative molecular mass distribution of the polymer is usually required to be properly distributed.
The particle structure of resin absorption of plasticizer influence, where surface, irregular porous particles, namely loose PVC resin, easy absorption of plasticizer, ingredients need low temperature and short time. The opposite particles are dense. The structure rules. Solid particles, that is, compact PVC resin, are not easy to absorb plasticizers and require higher temperatures and longer periods of time.
The main effect of the size uniformity of resin blend, the same quality of resin particle size, particle number and total area decreased, when mixed with additives, contact less prone to uneven mixing phenomenon, at the same time mixing, plasticizing large particles is not easy to complete, thus affecting the performance of the product. But too small particles caused by dust, volume measurement difficulties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The intermolecular force exists among the large molecules of thermoplastic polyvinyl chloride. The size of the force depends mainly on the properties of the functional groups in the molecular chain. Polymers with strong polar groups have good mechanical properties because of their strong intermolecular gravitation. If the polarity of polymer group is weak or non-polar base, their molecular chain attraction is very small, so it is easy to process. In order to make polymer with strong polar group easy to form, it is necessary to weaken its intermolecular force. The method can be achieved by increasing the temperature or adding PVC plasticizer.
PVC resin is unstable at high temperature, especially high viscosity polyvinyl chloride (PVC). PVC plasticizers need to be added to achieve the purpose of easy forming.
PVC plasticizer is an organic compound with a certain polarity, temperature is mixed with the polymer, and the polymer molecular thermal motion becomes more intense, so the force chain weakened, in the distance between the expansion of small molecular plasticizer into the polymer chain, polar groups such plasticizer polar groups and polymer molecular interactions instead of polymer polar molecule interactions, the polymer swelling, PVC plasticizer in the non-polar part of the polymer molecular polarity based shielding. And increased the intermolecular distance weakens the intermolecular force van Edward the role of the molecular chain, easy to move, thereby reducing the melting temperature of the polymer, allowing easy molding.
The polymer is the main component in the powder (granular) plastic, which is bonded to a variety of additives and gives the main physical and mechanical properties of the products. Commonly used thermoplastic plastics are polyvinyl chloride, polyethylene, polypropylene, polystyrene, ABS, polycarbonate, polyurethane, nylon, polyformaldehyde and so on. Different polymers have different properties and uses, as far as the same polymer is concerned, because the different properties of the synthetic methods are different. The resins synthesized by the same synthetic method have different properties and uses because of their different grades.
The relative molecular mass and distribution of polymer have great influence on product properties and ingredients. The particle structure and size of resin affect the interaction of plasticizers and solvents.
Two octyl terephthalate (plasticizer DOTP) information:
Shipping port: Shanghai port
Price quotation validity: 15 days
Entry time: 15 days (inspection declaration)
Export authority: the company's right to import and export
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
The relative molecular mass of the resin determines the physical and mechanical properties of the product. The greater the molecular weight, the higher the strength of the product, but the lower the fluidity, the higher the burden and the processing temperature. With the increase of the molecular weight of the polymer, the swelling and plasticizing speed of the polymer decreases, which brings difficulties to the proportioning. Although the relative molecular weight is low, it is beneficial to the proportioning and molding, but the properties of the products are poor. Therefore, the appropriate molecular weight should be selected according to the use of the product and the molding method.
The distribution of relative molecular mass also affects the properties of the products. With the widening of the relative molecular mass distribution, the mechanical properties and thermal properties of the products are reduced. The relative molecular mass distribution also affects the widening of the ingredients and processing process, due to the relative molecular mass distribution is different, have different sensitivity to temperature of plasticizer or other liquid additives show different swelling and absorption ability, which will show different behavior in mixing and molding process.
For example, in the batching process, when the low molecular weight fraction has been fully plasticized, the high molecular weight fraction may still be raw material, which will cause uneven plasticization and affect the mixture with other components, such as stabilizers and coloring agents, and ultimately affect the quality of products. To increase the proportioning temperature, although it is beneficial to the plasticizing of high molecular weight, the low molecular weight grade may be degraded because of overheating.Therefore, the relative molecular mass distribution of the polymer is usually required to be properly distributed.
The particle structure of resin absorption of plasticizer influence, where surface, irregular porous particles, namely loose PVC resin, easy absorption of plasticizer, ingredients need low temperature and short time. The opposite particles are dense. The structure rules. Solid particles, that is, compact PVC resin, are not easy to absorb plasticizers and require higher temperatures and longer periods of time.
The main effect of the size uniformity of resin blend, the same quality of resin particle size, particle number and total area decreased, when mixed with additives, contact less prone to uneven mixing phenomenon, at the same time mixing, plasticizing large particles is not easy to complete, thus affecting the performance of the product. But too small particles caused by dust, volume measurement difficulties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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