News Details
Plastic plasticizer PVC
2017-12-7 16:03:09
Plastic plasticizer PVC
In this paper, PVC plastic and PVC plastic plasticizer are introduced. With the development of industry, the application of PVC plastic plasticizer is more and more.
PVC plastics, chemical industry refers to compound PVC. English name polyvinylchlorid, English abbreviated PVC.
It has a yellowish semitransparent and glossy color. Transparency is better than polyethylene and polypropylene, and worse than polystyrene. With the amount of auxiliaries, it is divided into soft and rigid polyvinyl chloride, soft products are soft and tough, and feel sticky. Hardness of hard products is higher than that of low density polyethylene, but lower than polypropylene, so there will be whitening phenomenon at flexion. Common products: plate, pipe, shoe sole, toy, door and window, wire outer skin, stationery and so on. A polymer that uses a chlorine atom to replace a hydrogen atom in polyethylene.
PVC (polyvinyl chloride), the chemical and physical properties of rigid PVC, is one of the most widely used plastic materials. PVC material is a kind of non crystalline material. PVC materials are often used as stabilizers, lubricants, auxiliary processing agents, colorants, reinforcing agents, PVC plastic plasticizers, and other additives.
The PVC material is non combustible, high strength, excellent resistance to climate variability and geometric stability. PVC has strong resistance to oxidants, reducers and strong acids. However, it can be corroded by concentrated oxidizing acid, such as concentrated sulfuric acid and concentrated nitric acid, and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
The melting temperature of PVC is a very important process parameter in the process of processing. If this parameter is improper, the problem of material decomposition will be caused. The flow characteristic of PVC is rather poor, and its process range is very narrow. Especially for large molecular weight PVC materials, it is more difficult to process (usually lubricants are added to improve the flow characteristics). Therefore, PVC materials with small molecular weight are commonly used. The shrinkage rate of PVC is quite low, which is generally 0.2~0.6%.
Technological conditions of injection mould
Melting temperature: 185~205 C mold temperature: 20~50 C
Injection pressure: can be large to 1500bar pressure protection pressure: can be as large as 1000bar injection speed: in order to avoid material degradation, it is generally required to use a considerable rate of injection.
Runner and gate: all regular gates can be used. If the smaller parts are processed, it is best to use a tip gate or a latent gate; for the thicker parts, it is best to use a fan-shaped gate. The minimum diameter of the needle tip gate or the latent gate should be 1mm; the thickness of the fan-shaped gate should not be less than 1mm.
Typical use water supply pipeline, household pipe, house wall board, commercial machine shell, electronic product packaging, medical equipment, food packaging and so on.
The basic information of two octyl terephthalate (plasticizer DOTP)
Chinese Name: two octyl terephthalate
Synonyms: two Chinese terephthalate (2- ethylhexyl) ester; dioctyl terephthalate two; terephthalic acid two 1,4- benzene carboxylic acid isooctyl ester; two bis (2- ethylhexyl) ester; terephthalic acid two (2- ethylhexyl) ester; dioctyl terephthalate (DOTP); two double 2= ethylhexyl terephthalate; bis (2- ethylhexyl) terephthalic acid, plasticizer DOTP
English Name: Dioctyl terephthalate
English synonyms are: Di- (2-Ethylhexyl) Terephthalate; Di (2Ethylhexyl) Terephthalate; Kodaflexdotp; Terephthalicacid, Bis (2-Ethylhexyl) Ester; Bis;; ";"
CAS: 6422-86-2
Molecular formula: C24H38O4
Molecular weight: 390.56
EINECS: 229-176
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.
PVC can be divided into soft PVC and hard PVC. The hard PVC accounts for about 2/3 in the market, and the soft PVC accounts for 1/3. Soft PVC is usually used for floor, ceiling and leather surface. But soft PVC contains softeners (which is the difference between soft PVC and hard PVC). It is easy to become brittle and hard to preserve, so its application scope is limited. Hard PVC does not contain softener, so it has good flexibility, easy to form, not brittle, non-toxic and pollution-free, and has long preservation time, so it has great value in development and application. The following are referred to as PVC.
The essence of PVC is a vacuum plastic film, which is used for surface packaging of various panels. Therefore, it is also known as decorative film and adhesive film, which is applied to many industries, such as building materials, packaging, medicine and many other industries. The building materials industry accounted for the largest proportion, 60%, followed by the packaging industry, and a number of other small range of applications.
The combustion characteristics of PVC are refractory, fire extinguishing, yellow flame, white smoke, and the irritating smell of chlorine when the plastic is softened.
PVC resin is a kind of multi component plastic. Different additives can be added according to different uses. Therefore, as the composition is different, its products can exhibit different physical and mechanical properties, such as adding or not adding plasticizer, it can make soft and hard products.
Generally speaking, PVC products have the advantages of chemical stability, flame resistance, self extinguishing, abrasion resistance, noise elimination and shock absorption, high strength, good electrical insulation, low cost, wide material source and good tightness. Its disadvantage is that the thermal stability is poor, and it is susceptible to aging by light, heat and oxygen. PVC resin itself is non-toxic, if the use of non-toxic plasticizer, stabilizer and other auxiliary materials made of products, harmless to human and livestock. However, most of the plasticizers and stabilizers commonly used in PVC products are toxic. Therefore, they can not be used for food in addition to the products labeled with non-toxic formula.
Polyvinyl chloride resin is a thermoplastic that is an amorphous structure. Under UV light, PVC light blue or purple hard white fluorescence, fluorescence soft PVC issued blue or white. When the temperature is 20, the refractive index is 1.544, the specific gravity is 1.40, while the density of products with plasticizers and fillers is usually in the range of 1.15 ~ 2. The density of soft PVC foam is 0.08 to 0.48, and rigid foam is 0.03 ~ 0.08. The water absorption of PVC is not more than 0.5%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In this paper, PVC plastic and PVC plastic plasticizer are introduced. With the development of industry, the application of PVC plastic plasticizer is more and more.
PVC plastics, chemical industry refers to compound PVC. English name polyvinylchlorid, English abbreviated PVC.
It has a yellowish semitransparent and glossy color. Transparency is better than polyethylene and polypropylene, and worse than polystyrene. With the amount of auxiliaries, it is divided into soft and rigid polyvinyl chloride, soft products are soft and tough, and feel sticky. Hardness of hard products is higher than that of low density polyethylene, but lower than polypropylene, so there will be whitening phenomenon at flexion. Common products: plate, pipe, shoe sole, toy, door and window, wire outer skin, stationery and so on. A polymer that uses a chlorine atom to replace a hydrogen atom in polyethylene.
PVC (polyvinyl chloride), the chemical and physical properties of rigid PVC, is one of the most widely used plastic materials. PVC material is a kind of non crystalline material. PVC materials are often used as stabilizers, lubricants, auxiliary processing agents, colorants, reinforcing agents, PVC plastic plasticizers, and other additives.
The PVC material is non combustible, high strength, excellent resistance to climate variability and geometric stability. PVC has strong resistance to oxidants, reducers and strong acids. However, it can be corroded by concentrated oxidizing acid, such as concentrated sulfuric acid and concentrated nitric acid, and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
The melting temperature of PVC is a very important process parameter in the process of processing. If this parameter is improper, the problem of material decomposition will be caused. The flow characteristic of PVC is rather poor, and its process range is very narrow. Especially for large molecular weight PVC materials, it is more difficult to process (usually lubricants are added to improve the flow characteristics). Therefore, PVC materials with small molecular weight are commonly used. The shrinkage rate of PVC is quite low, which is generally 0.2~0.6%.
Technological conditions of injection mould
Melting temperature: 185~205 C mold temperature: 20~50 C
Injection pressure: can be large to 1500bar pressure protection pressure: can be as large as 1000bar injection speed: in order to avoid material degradation, it is generally required to use a considerable rate of injection.
Runner and gate: all regular gates can be used. If the smaller parts are processed, it is best to use a tip gate or a latent gate; for the thicker parts, it is best to use a fan-shaped gate. The minimum diameter of the needle tip gate or the latent gate should be 1mm; the thickness of the fan-shaped gate should not be less than 1mm.
Typical use water supply pipeline, household pipe, house wall board, commercial machine shell, electronic product packaging, medical equipment, food packaging and so on.
The basic information of two octyl terephthalate (plasticizer DOTP)
Chinese Name: two octyl terephthalate
Synonyms: two Chinese terephthalate (2- ethylhexyl) ester; dioctyl terephthalate two; terephthalic acid two 1,4- benzene carboxylic acid isooctyl ester; two bis (2- ethylhexyl) ester; terephthalic acid two (2- ethylhexyl) ester; dioctyl terephthalate (DOTP); two double 2= ethylhexyl terephthalate; bis (2- ethylhexyl) terephthalic acid, plasticizer DOTP
English Name: Dioctyl terephthalate
English synonyms are: Di- (2-Ethylhexyl) Terephthalate; Di (2Ethylhexyl) Terephthalate; Kodaflexdotp; Terephthalicacid, Bis (2-Ethylhexyl) Ester; Bis;; ";"
CAS: 6422-86-2
Molecular formula: C24H38O4
Molecular weight: 390.56
EINECS: 229-176
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.
PVC can be divided into soft PVC and hard PVC. The hard PVC accounts for about 2/3 in the market, and the soft PVC accounts for 1/3. Soft PVC is usually used for floor, ceiling and leather surface. But soft PVC contains softeners (which is the difference between soft PVC and hard PVC). It is easy to become brittle and hard to preserve, so its application scope is limited. Hard PVC does not contain softener, so it has good flexibility, easy to form, not brittle, non-toxic and pollution-free, and has long preservation time, so it has great value in development and application. The following are referred to as PVC.
The essence of PVC is a vacuum plastic film, which is used for surface packaging of various panels. Therefore, it is also known as decorative film and adhesive film, which is applied to many industries, such as building materials, packaging, medicine and many other industries. The building materials industry accounted for the largest proportion, 60%, followed by the packaging industry, and a number of other small range of applications.
The combustion characteristics of PVC are refractory, fire extinguishing, yellow flame, white smoke, and the irritating smell of chlorine when the plastic is softened.
PVC resin is a kind of multi component plastic. Different additives can be added according to different uses. Therefore, as the composition is different, its products can exhibit different physical and mechanical properties, such as adding or not adding plasticizer, it can make soft and hard products.
Generally speaking, PVC products have the advantages of chemical stability, flame resistance, self extinguishing, abrasion resistance, noise elimination and shock absorption, high strength, good electrical insulation, low cost, wide material source and good tightness. Its disadvantage is that the thermal stability is poor, and it is susceptible to aging by light, heat and oxygen. PVC resin itself is non-toxic, if the use of non-toxic plasticizer, stabilizer and other auxiliary materials made of products, harmless to human and livestock. However, most of the plasticizers and stabilizers commonly used in PVC products are toxic. Therefore, they can not be used for food in addition to the products labeled with non-toxic formula.
Polyvinyl chloride resin is a thermoplastic that is an amorphous structure. Under UV light, PVC light blue or purple hard white fluorescence, fluorescence soft PVC issued blue or white. When the temperature is 20, the refractive index is 1.544, the specific gravity is 1.40, while the density of products with plasticizers and fillers is usually in the range of 1.15 ~ 2. The density of soft PVC foam is 0.08 to 0.48, and rigid foam is 0.03 ~ 0.08. The water absorption of PVC is not more than 0.5%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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