News Details
PVC product plasticizer
2017-12-23 11:38:55
PVC product plasticizer
The factors that affect the extraction and migration of plasticizers lie in the relative molecular mass and molecular structure of the plasticizers of PVC products. The larger the relative molecular mass of PVC plasticizers, the larger the volume of the group contained in the molecules. The more diffusing they are in the plasticized PVC, the smaller the probability of reaching the surface, and the lower probability of being extracted and migrated.
In order to have good durability, the relative molecular weight of the plasticizer of PVC products is more than 350. The plasticizers with relative molecular mass of more than 1000 of polyester and benzoic acid esters, such as dibenzoic acid ester, have very good durability.
The higher the ambient temperature of PVC products, the more intense the Brown motion of molecules. The plasticizer molecules overcome the interaction force between plasticizer and PVC macromolecules, which makes it easier for plasticizer molecules to diffuse to the surface of products and further diffuse into the medium.
Plasticizer content. The higher the component content of the plasticizer in the general formula, the more plasticizer molecules in the plasticizing PVC and the more plasticizer molecules on the surface of the product. The more easily the plasticizer is captured by the contact medium, and is pumped out or migrated, and then the inner layer plasticizer is supplied by the high concentration to the low concentration surface.
At the same time, the more plasticizer in PVC, the greater the chance of collision and interaction between plasticizer molecules, which weakens the binding force of some plasticizer molecules to PVC macromolecules, making it easier to move and diffuse in PVC. Therefore, in a certain range, the increase of plasticizer content makes the plasticizer diffused more easily.
The extraction and migration of plasticizers is closely related to the properties of the plasticized material itself, and it is also inseparable from the medium in contact with the plasticizer. The physical and chemical properties of the liquid medium in contact with the plasticized PVC phase are the main factors affecting the extraction of plasticizers. The general plasticizer is easy to be pumped out by gasoline or oil solvent and is difficult to be pumped out of water. Under different medium and conditions, two octyl (DOP), plasticizer, phthalate (DOP) was extracted from PVC products.
As the polymer medium, as the plasticizer, the plasticizer is easy to migrate when the plasticizer is compatible with the plasticizer and has a strong polarity. The migration of DOP to the nitrocellulose and ABS resin is large, and the mobility of the rubber is not too large and the mobility of the polyethylene is small. The migration of DOP to different polymer materials in PVC.
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.
According to reports, the migration speed and time in the PVC film DOP, in the initial stage of migration rate, migration to the surface by the square root of plasticizer concentration and migration time is linear, with prolonged time after the migration rate decreased gradually, to a certain time (720h left and right), balance.
Benzyl sulfonate, petroleum ester, T a 5O.m 5O, English name phenyl alkylsulfonate. It is a light yellow transparent oil like liquid from Cj2 ~ C1I heavy liquid paraffin by sulfonylchloride reaction (conversion rate of 50%) and then with phenol. The average molecular weight is 390, the acid value <0.ImgKO} is relative density 1.03 ~ l, O7 (25 C), viscosity 100 ~ 130ep (20 C), soluble in most organic solvents and insoluble in water.
Low volatility. Can endow the products with excellent weather resistance, physical and mechanical properties and electrical insulation. It is suitable for artificial leather, film, wire and cable and so on. However, this product is prone to light emblem and yellowing by strong light. The cold resistance is less than DOP., so it is mostly used with phthalic acid esters, and the general dosage is 10 ~ 30phf.
Chlorinated paraffin, the English name chlorinated parafin, is obtained from chlorinated paraffin hydrocarbons. It has a structure similar to PVC. It is a kind of incremental plasticizer. Its volatility and flame retardancy are excellent electrical insulation. It can give products a certain gloss and tensile strength. It can be used as an auxiliary plasticizer for PVC resin to replace a part of the main plasticizer. The cost of jumping is reduced. Chlorinated paraffin wax is easily decomposed during processing. Releasing hydrogen chloride can accelerate the decomposition and degradation of PVC resin. Therefore, when using chlorinated paraffin, it is necessary to cooperate with suitable heat stabilizer to prevent its decomposition. In addition, chlorinated paraffin and I, the compatibility of VC is low. The product rate of poor cold resistance and long chong.
Poly A monomethyl styrene resin, English name poly - methy styrome resin. It is made from a monomethyl styrene, with excellent light and heat stability, chemical resistance and electrical properties. The task shift is small, a variety of products for PVC. The general rejection amount is lO% 20 0,6, the product can be improved. The electrical insulation characteristics of products and improve the appearance of smooth.
Two octyl terephthalate DOTP English name T) I - oetyl - terphthalate. It is the near colorless low viscosity concentrated body of terephthalic acid and 2 ethylhexyl alcohol in the presence of the catalyst. Acidity (o two reed formic acid) <0.01 0,6. 0.9835 relative density (20 C), the viscosity of 63ep (25 C), volume resistance of 39 * 1O n? Cm. l2% volatilization loss (weight 177 C x 24h), it has good electrical properties and cold resistance, less volatile plasticizing efficiency than IX). P high, suitable for PVC resin plasticizer, high insulation, for taking resistance, heat resistance and cold resistance and good softness can be mixed with any product. And the proportion of DOP. Because of the structural reasons. The heat resistance and durability are better than that of DIDP.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The factors that affect the extraction and migration of plasticizers lie in the relative molecular mass and molecular structure of the plasticizers of PVC products. The larger the relative molecular mass of PVC plasticizers, the larger the volume of the group contained in the molecules. The more diffusing they are in the plasticized PVC, the smaller the probability of reaching the surface, and the lower probability of being extracted and migrated.
In order to have good durability, the relative molecular weight of the plasticizer of PVC products is more than 350. The plasticizers with relative molecular mass of more than 1000 of polyester and benzoic acid esters, such as dibenzoic acid ester, have very good durability.
The higher the ambient temperature of PVC products, the more intense the Brown motion of molecules. The plasticizer molecules overcome the interaction force between plasticizer and PVC macromolecules, which makes it easier for plasticizer molecules to diffuse to the surface of products and further diffuse into the medium.
Plasticizer content. The higher the component content of the plasticizer in the general formula, the more plasticizer molecules in the plasticizing PVC and the more plasticizer molecules on the surface of the product. The more easily the plasticizer is captured by the contact medium, and is pumped out or migrated, and then the inner layer plasticizer is supplied by the high concentration to the low concentration surface.
At the same time, the more plasticizer in PVC, the greater the chance of collision and interaction between plasticizer molecules, which weakens the binding force of some plasticizer molecules to PVC macromolecules, making it easier to move and diffuse in PVC. Therefore, in a certain range, the increase of plasticizer content makes the plasticizer diffused more easily.
The extraction and migration of plasticizers is closely related to the properties of the plasticized material itself, and it is also inseparable from the medium in contact with the plasticizer. The physical and chemical properties of the liquid medium in contact with the plasticized PVC phase are the main factors affecting the extraction of plasticizers. The general plasticizer is easy to be pumped out by gasoline or oil solvent and is difficult to be pumped out of water. Under different medium and conditions, two octyl (DOP), plasticizer, phthalate (DOP) was extracted from PVC products.
As the polymer medium, as the plasticizer, the plasticizer is easy to migrate when the plasticizer is compatible with the plasticizer and has a strong polarity. The migration of DOP to the nitrocellulose and ABS resin is large, and the mobility of the rubber is not too large and the mobility of the polyethylene is small. The migration of DOP to different polymer materials in PVC.
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.
According to reports, the migration speed and time in the PVC film DOP, in the initial stage of migration rate, migration to the surface by the square root of plasticizer concentration and migration time is linear, with prolonged time after the migration rate decreased gradually, to a certain time (720h left and right), balance.
Benzyl sulfonate, petroleum ester, T a 5O.m 5O, English name phenyl alkylsulfonate. It is a light yellow transparent oil like liquid from Cj2 ~ C1I heavy liquid paraffin by sulfonylchloride reaction (conversion rate of 50%) and then with phenol. The average molecular weight is 390, the acid value <0.ImgKO} is relative density 1.03 ~ l, O7 (25 C), viscosity 100 ~ 130ep (20 C), soluble in most organic solvents and insoluble in water.
Low volatility. Can endow the products with excellent weather resistance, physical and mechanical properties and electrical insulation. It is suitable for artificial leather, film, wire and cable and so on. However, this product is prone to light emblem and yellowing by strong light. The cold resistance is less than DOP., so it is mostly used with phthalic acid esters, and the general dosage is 10 ~ 30phf.
Chlorinated paraffin, the English name chlorinated parafin, is obtained from chlorinated paraffin hydrocarbons. It has a structure similar to PVC. It is a kind of incremental plasticizer. Its volatility and flame retardancy are excellent electrical insulation. It can give products a certain gloss and tensile strength. It can be used as an auxiliary plasticizer for PVC resin to replace a part of the main plasticizer. The cost of jumping is reduced. Chlorinated paraffin wax is easily decomposed during processing. Releasing hydrogen chloride can accelerate the decomposition and degradation of PVC resin. Therefore, when using chlorinated paraffin, it is necessary to cooperate with suitable heat stabilizer to prevent its decomposition. In addition, chlorinated paraffin and I, the compatibility of VC is low. The product rate of poor cold resistance and long chong.
Poly A monomethyl styrene resin, English name poly - methy styrome resin. It is made from a monomethyl styrene, with excellent light and heat stability, chemical resistance and electrical properties. The task shift is small, a variety of products for PVC. The general rejection amount is lO% 20 0,6, the product can be improved. The electrical insulation characteristics of products and improve the appearance of smooth.
Two octyl terephthalate DOTP English name T) I - oetyl - terphthalate. It is the near colorless low viscosity concentrated body of terephthalic acid and 2 ethylhexyl alcohol in the presence of the catalyst. Acidity (o two reed formic acid) <0.01 0,6. 0.9835 relative density (20 C), the viscosity of 63ep (25 C), volume resistance of 39 * 1O n? Cm. l2% volatilization loss (weight 177 C x 24h), it has good electrical properties and cold resistance, less volatile plasticizing efficiency than IX). P high, suitable for PVC resin plasticizer, high insulation, for taking resistance, heat resistance and cold resistance and good softness can be mixed with any product. And the proportion of DOP. Because of the structural reasons. The heat resistance and durability are better than that of DIDP.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian