News Details
Polyvinyl chloride plastic plasticizer
2017-12-26 17:42:44
Polyvinyl chloride plastic plasticizer
PVC itself has a chlorine content of up to 58%, so it has self extinguishing property. Because of the addition of PVC plasticizer, its flame retardancy is significantly reduced. In order to achieve the purpose of flame retardancy, flame retardants are usually introduced into PVC plasticizer molecules. Phosphate ester, chlorine plasticizer (such as chlorinated paraffin) are traditional flame retardant plasticizer types, in recent years, four halogenated phthalate two formic acid ester and its compounds developed accordingly, as plasticizer, and in some applications such as the production of wire and cable sheath is flame retardant, and has achieved good the effect of.
The cold resistance reflects the low temperature performance of PVC plastic plasticizer. Generally, rich in cyclic structure and branched alkyl plasticizer with poor cold resistance, aliphatic carboxylic acid and vinegar with methylene as the main body has excellent cold resistance, because the operation of cyclic or branched structure under low temperature in the polymer molecules become difficult.
Wang Shuqing using stannous oxide catalyst for the synthesis of azelaic acid ester product is two, after the end of the reaction the filter removed, can save alkali washing steps, compared with the traditional production process, the method has simple production process, good product quality and low cost. In addition to producing a small amount of waste water, there is no three waste emissions, and the yield of the product can reach 98.72%.
Wang Chengyun of PVC food packaging film of plasticizer DEHA in cyclohexane in migration, determination of impact rate constant and the activation energy of migration process, the results show that the rate constants increase with increasing the initial concentration of PVC in the food packaging film of the soaking temperature rise and DEHA, the initial concentration of DEHA samples the larger, the migration activation energy required is large.
Through the study on the migration behavior of 5 kinds of phthalate containing two formic acid ester plasticizer PVC plastic samples in simulated human sweat soaking and simulated saliva soak in Yang Zuojun, found that these substances can migrate to the human body sweat and saliva from PVC plastic, and eventually entering the human body. Damage to the human body.
Toxicity has always been the focus of attention in the processing and application industry of plasticizer. It should be said that the acute toxicity of most plasticizer varieties is very low, and it is impossible to cause too much harm to the human body and the environment. However, for some volatile and water-soluble low molecular weight varieties, their chronic toxicity can not be ignored.
In addition, according to different PVC products, the following factors should be considered: the thermal stability of the plasticizer itself, colorless and odorless, non-toxic, mould resistant and termite, the processing property of the products is good, easy to demolde, and the price is suitable.
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.
With the development of economy and the progress of science and technology, plastic products are lightweight, composite, functional and environmental protection oriented development, development of plastic products for industrial plasticizer was put forward new and higher requirements, the special plasticizer is the focus of the research and development of new products.
Plasticizers, also known as plasticizers. It is a widely used polymer material additive in industry. The addition of this material in plastic processing can enhance the flexibility of plastic film and make it easy to process, and it can be used for industrial purposes legally.
The main role of PVC. The first is to reduce the melting temperature of PVC and the viscosity of the melt. The processing temperature is reduced, and the two is to give the PVC products soft, elastic and low temperature resistance. Plasticizers are divided into two kinds of plasticizers and external plasticizers according to their principle and mode of action.
A, internal plasticizer: the internal plasticizer is actually a part of the polymer. The general internal plasticizer is the second monomer introduced in the polymerization process of the polymer. Because of the second monomers in the molecular structure of the polymer, the polymer chains have lower isotacticity, not only reduces the crystallinity of polymer chain. For example, the vinyl chloride vinyl acetate copolymer is softer than the vinyl chloride homopolymer. However, the temperature range of the internal plasticizer is narrow, and it must be added in the polymerization process, so the internal plasticizer is used very little.
B, external plasticizer: external plasticizer is a low molecular weight compound or polymer. Adding it to polymer that needs plasticizing can increase polymer plasticity. Outside the plasticizer is a kind of solid high boiling point, difficult volatile liquid or low melting point, and most of them are esters of organic compounds.
Usually, they do not react with polymers. The interaction with polymers is mainly due to the swelling effect of increasing temperature (dry elastic gel absorbs liquids and makes their volume swell. However, the absorbed liquid is limited to the solvent which can be used with it, so the swelling of the gel is strictly selective to the liquid. In general, it can be divided into two types: infinite swelling and finite swelling. A solid solution is formed with the polymer. The external plasticizer has more comprehensive performance and convenient production and use, and is widely used.
Now the plasticizers are generally said to be external plasticizers. The adjacent benzene two formic acid two ester (DOP) and dibutyl phthalate (DBP) are outside the plasticizer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
PVC itself has a chlorine content of up to 58%, so it has self extinguishing property. Because of the addition of PVC plasticizer, its flame retardancy is significantly reduced. In order to achieve the purpose of flame retardancy, flame retardants are usually introduced into PVC plasticizer molecules. Phosphate ester, chlorine plasticizer (such as chlorinated paraffin) are traditional flame retardant plasticizer types, in recent years, four halogenated phthalate two formic acid ester and its compounds developed accordingly, as plasticizer, and in some applications such as the production of wire and cable sheath is flame retardant, and has achieved good the effect of.
The cold resistance reflects the low temperature performance of PVC plastic plasticizer. Generally, rich in cyclic structure and branched alkyl plasticizer with poor cold resistance, aliphatic carboxylic acid and vinegar with methylene as the main body has excellent cold resistance, because the operation of cyclic or branched structure under low temperature in the polymer molecules become difficult.
Wang Shuqing using stannous oxide catalyst for the synthesis of azelaic acid ester product is two, after the end of the reaction the filter removed, can save alkali washing steps, compared with the traditional production process, the method has simple production process, good product quality and low cost. In addition to producing a small amount of waste water, there is no three waste emissions, and the yield of the product can reach 98.72%.
Wang Chengyun of PVC food packaging film of plasticizer DEHA in cyclohexane in migration, determination of impact rate constant and the activation energy of migration process, the results show that the rate constants increase with increasing the initial concentration of PVC in the food packaging film of the soaking temperature rise and DEHA, the initial concentration of DEHA samples the larger, the migration activation energy required is large.
Through the study on the migration behavior of 5 kinds of phthalate containing two formic acid ester plasticizer PVC plastic samples in simulated human sweat soaking and simulated saliva soak in Yang Zuojun, found that these substances can migrate to the human body sweat and saliva from PVC plastic, and eventually entering the human body. Damage to the human body.
Toxicity has always been the focus of attention in the processing and application industry of plasticizer. It should be said that the acute toxicity of most plasticizer varieties is very low, and it is impossible to cause too much harm to the human body and the environment. However, for some volatile and water-soluble low molecular weight varieties, their chronic toxicity can not be ignored.
In addition, according to different PVC products, the following factors should be considered: the thermal stability of the plasticizer itself, colorless and odorless, non-toxic, mould resistant and termite, the processing property of the products is good, easy to demolde, and the price is suitable.
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.
With the development of economy and the progress of science and technology, plastic products are lightweight, composite, functional and environmental protection oriented development, development of plastic products for industrial plasticizer was put forward new and higher requirements, the special plasticizer is the focus of the research and development of new products.
Plasticizers, also known as plasticizers. It is a widely used polymer material additive in industry. The addition of this material in plastic processing can enhance the flexibility of plastic film and make it easy to process, and it can be used for industrial purposes legally.
The main role of PVC. The first is to reduce the melting temperature of PVC and the viscosity of the melt. The processing temperature is reduced, and the two is to give the PVC products soft, elastic and low temperature resistance. Plasticizers are divided into two kinds of plasticizers and external plasticizers according to their principle and mode of action.
A, internal plasticizer: the internal plasticizer is actually a part of the polymer. The general internal plasticizer is the second monomer introduced in the polymerization process of the polymer. Because of the second monomers in the molecular structure of the polymer, the polymer chains have lower isotacticity, not only reduces the crystallinity of polymer chain. For example, the vinyl chloride vinyl acetate copolymer is softer than the vinyl chloride homopolymer. However, the temperature range of the internal plasticizer is narrow, and it must be added in the polymerization process, so the internal plasticizer is used very little.
B, external plasticizer: external plasticizer is a low molecular weight compound or polymer. Adding it to polymer that needs plasticizing can increase polymer plasticity. Outside the plasticizer is a kind of solid high boiling point, difficult volatile liquid or low melting point, and most of them are esters of organic compounds.
Usually, they do not react with polymers. The interaction with polymers is mainly due to the swelling effect of increasing temperature (dry elastic gel absorbs liquids and makes their volume swell. However, the absorbed liquid is limited to the solvent which can be used with it, so the swelling of the gel is strictly selective to the liquid. In general, it can be divided into two types: infinite swelling and finite swelling. A solid solution is formed with the polymer. The external plasticizer has more comprehensive performance and convenient production and use, and is widely used.
Now the plasticizers are generally said to be external plasticizers. The adjacent benzene two formic acid two ester (DOP) and dibutyl phthalate (DBP) are outside the plasticizer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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