News Details
Polyvinyl chloride plastic (PVC) plasticizer
2017-12-14 11:29:22
Polyvinyl chloride plastic (PVC) plasticizer is a substance added to polymer polymerization system to increase their plasticity, flexibility, or expansibility. Its main role is to weaken the secondary bonds between polymer molecules, namely Fan Dehua force, thereby increasing the polymer chain mobility, reduces the crystallinity of the polymer chains, which increased the plastic polymer, mainly for polymer hardness, modulus, transformation temperature and brittleness temperature decreased, and to improve the elongation, flexibility and flexibility. A typical example is the most commonly used production of phthalic acid esters in our production.
When producing PVC plastics, if you add more polyvinyl chloride plastics (PVC) plasticizer, you can get soft PVC plastics. If you do not add or add PVC plastics (PVC) plasticizer (<10%), you will get rigid PVC plastics.
However, the plasticizer is more than that, besides there are many other types, such as two yuan, phosphate ester, aliphatic epoxides, polyol ester, chlorine containing compound, polyester, petroleum ester, benzene ester, citric acid, on the basis of the current domestic and foreign studies of new products by plastic the agent or the new synthesis technology to make up for what we now use plastic deficiencies and the lack of agent, including the plasticizer and its own defects in the synthesis of defects of environment, which is worth further research and discussion.
Since the PVC itself is a hard material, adding plasticizer, can make the plastic product has soft, easy bending, folding, good elasticity properties and easy shaping, and therefore more viscous PE film is preferred. In addition, women often use perfume, nail polish and other cosmetics. The two benzoic acid esters are used as fixing agents to keep the smell of perfume, or make the nail polish film smoother.
Due to the addition of a large number of plasticizers, the fresh-keeping film is not bound to the polymer by chemical bonds, so it is easy to be released to the environment by the external environmental factors, such as temperature, time and pH value. Even when it is not heated with food, the plasticizer has the opportunity to exudate to food, especially when the contact food is fish meat with non-polar oil on the surface. It is easier to "dissolve" plasticizer.
The total production capacity of plasticizers in the world has reached 6 million 400 thousand tons, and there are more than 500 industrial varieties. The total sales of plasticizers accounted for 60% of the plastic additives.
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.
Since then, with the rapid development of the plastics industry, there have been better polyester plasticizers, epoxy plasticizers, low temperature plasticizers and high energy plasticizers for rocket propellants, explosives and munitions.
Now, one of the important fine chemical product variety, mass production of plasticizer industry has been in the form of the adjacent benzene two formic acid ester based, its varieties and production are listed in the first plastic additives.
PVC resin is a polar non crystalline polymer, density: 1.380 g/cm3, glass transition temperature: 87 degrees C, so the thermal stability is poor, not easy to process. Can not be used directly, must be modified mixing, adding related additives and filler can be used. It is determined that the properties and requirements of the prepared PVC materials are different because of the different kinds and fractions of the additive and filler. We usually call it a PVC formula, which is strictly a PVC modified formula, and PVC is only modified to use. This class is often classified as polymer modified material.
The modification of materials is mainly centered on the high performance of general plastics, the transformation of single component materials to multi component materials and composites, and the research on the functionalization, optimization of performance and price of materials. The modified methods mainly include chemical modification, filling modification, reinforced modification, blending modification and nano composite modification. The basic principle of modification is to give the material a function or improve some performance by adding additives.
It is a simple and effective modification method to introduce heterogeneous polymer phase polymer blend in PVC phase mixing, and has accumulated experience in actual production. In general, when two or more than two different polymers are melted, a mixture with the properties of these polymers can be prepared.
In order to improve the mobility and impact properties of rigid polyvinyl chloride, acrylonitrile butadiene styrene (ABS) is commonly used at present, which mainly improves the impact strength. Methyl Methacrylate Butadiene Styrene (MBS), except for weather resistance, the other properties are almost ideal, especially the impact strength. With a small amount added, it can be greatly improved. Chlorinated polyethylene (CPE) can improve the impact strength. If the amount of 20% is added, the impact strength can be very high. Ethylene vinyl acetate (EVA) can improve the impact strength.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
When producing PVC plastics, if you add more polyvinyl chloride plastics (PVC) plasticizer, you can get soft PVC plastics. If you do not add or add PVC plastics (PVC) plasticizer (<10%), you will get rigid PVC plastics.
However, the plasticizer is more than that, besides there are many other types, such as two yuan, phosphate ester, aliphatic epoxides, polyol ester, chlorine containing compound, polyester, petroleum ester, benzene ester, citric acid, on the basis of the current domestic and foreign studies of new products by plastic the agent or the new synthesis technology to make up for what we now use plastic deficiencies and the lack of agent, including the plasticizer and its own defects in the synthesis of defects of environment, which is worth further research and discussion.
Since the PVC itself is a hard material, adding plasticizer, can make the plastic product has soft, easy bending, folding, good elasticity properties and easy shaping, and therefore more viscous PE film is preferred. In addition, women often use perfume, nail polish and other cosmetics. The two benzoic acid esters are used as fixing agents to keep the smell of perfume, or make the nail polish film smoother.
Due to the addition of a large number of plasticizers, the fresh-keeping film is not bound to the polymer by chemical bonds, so it is easy to be released to the environment by the external environmental factors, such as temperature, time and pH value. Even when it is not heated with food, the plasticizer has the opportunity to exudate to food, especially when the contact food is fish meat with non-polar oil on the surface. It is easier to "dissolve" plasticizer.
The total production capacity of plasticizers in the world has reached 6 million 400 thousand tons, and there are more than 500 industrial varieties. The total sales of plasticizers accounted for 60% of the plastic additives.
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.
Since then, with the rapid development of the plastics industry, there have been better polyester plasticizers, epoxy plasticizers, low temperature plasticizers and high energy plasticizers for rocket propellants, explosives and munitions.
Now, one of the important fine chemical product variety, mass production of plasticizer industry has been in the form of the adjacent benzene two formic acid ester based, its varieties and production are listed in the first plastic additives.
PVC resin is a polar non crystalline polymer, density: 1.380 g/cm3, glass transition temperature: 87 degrees C, so the thermal stability is poor, not easy to process. Can not be used directly, must be modified mixing, adding related additives and filler can be used. It is determined that the properties and requirements of the prepared PVC materials are different because of the different kinds and fractions of the additive and filler. We usually call it a PVC formula, which is strictly a PVC modified formula, and PVC is only modified to use. This class is often classified as polymer modified material.
The modification of materials is mainly centered on the high performance of general plastics, the transformation of single component materials to multi component materials and composites, and the research on the functionalization, optimization of performance and price of materials. The modified methods mainly include chemical modification, filling modification, reinforced modification, blending modification and nano composite modification. The basic principle of modification is to give the material a function or improve some performance by adding additives.
It is a simple and effective modification method to introduce heterogeneous polymer phase polymer blend in PVC phase mixing, and has accumulated experience in actual production. In general, when two or more than two different polymers are melted, a mixture with the properties of these polymers can be prepared.
In order to improve the mobility and impact properties of rigid polyvinyl chloride, acrylonitrile butadiene styrene (ABS) is commonly used at present, which mainly improves the impact strength. Methyl Methacrylate Butadiene Styrene (MBS), except for weather resistance, the other properties are almost ideal, especially the impact strength. With a small amount added, it can be greatly improved. Chlorinated polyethylene (CPE) can improve the impact strength. If the amount of 20% is added, the impact strength can be very high. Ethylene vinyl acetate (EVA) can improve the impact strength.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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