News Details
PVC new plasticizer
2017-12-13 10:38:22
PVC new plasticizer
The direct chain alkyl, side chain alkyl and cyclic alkyl pyrrolidone containing 6-20 carbon are all new plasticizers of PVC. Shi Wancong's article pointed out that plasticizer PVC alkylpyrone can plasticate PVC calender and foam plastics with the new plasticizer of PVC. When using the optimized formula, the new plasticizer of PVC is better than the two phthalate two DINP plasticizer.
The main functions of plasticizer are as follows: 1., reduce the melting temperature and melt viscosity of polymer and reduce the molding temperature; 2., make polymer products have flexibility, elasticity and low temperature resistance. The mechanism of action of plasticizer.
The polarity of plasticizer and resin is different, and its mechanism is different.
The 1. volume effect of this effect is mainly for non polar plasticizers, its mode of action for the middle molecular chain is inserted into the resin, increase the distance between the molecules, thus weaken the force between the molecules, lower melt viscosity, increase the flexibility of polymer chains, such plasticizers added more, the volume effect the larger, and long chain structure increase volume effect of plasticizer ratio of plasticizer large ring structure.
2. this shielding effect is mainly directed against the polar plasticizer, its mode of action to increase the interaction between polar plasticizer and polar polymer instead of the polar attraction between polymer molecules, thus weaken the intermolecular forces, the plasticizing effect is called the shielding effect. Properties of plasticizers
The properties of plasticizers mainly include the following items: plasticizing efficiency, compatibility, cold resistance, durability, heat resistance, insulation, flame retardancy and hygiene.
Plasticizing efficiency is a relative concept of plasticizers' plasticizing capacity or plasticizing effect, and the plasticizing efficiency of different plasticizers is a relative concept. The plasticizing efficiency is generally evaluated by the amount of plasticized dosage that is required to change the quantitative flexible index. The less the plasticizer added, the higher the plasticizing efficiency. General molecular weight plasticizer
The plasticizer of high molecular weight has high plasticizing efficiency for PVC, but with the increase of the polarity of plasticizer, the degree of alkyl branching and the increase of aromatic ring structure decrease the plasticizing efficiency.
The order of plasticizing efficiency of commonly used plasticizers is: DBS>DBP>DOS>DOA>DOP>DIOP>M-50>TCP>PCl-50. Compatibility refers to the compatibility of plasticizers and polymers, and the compatibility of the same plasticizers to different polar polymers is different.
The order of the compatibility of plasticizers to PVC is DBS>DBP>DOP>DIOP>DNP>ED3>DOA>DOS> chlorinated paraffin.
Cold resistance refers to the low temperature resistance of plasticizers. Increased cold tolerance plasticizer and its structure, methylene (CH2) aliphatic acid ester cold two yuan as the main body of the best, is one of the most commonly used cold resistant plasticizer, and containing cyclic and branched plasticizer for polymer in low temperature and the cold resistance movement difficulties excellent.
Physical and chemical properties of two octyl terephthalate (plasticizer DOTP)
Appearance: transparent and colorless liquid
Boiling point: 400 degrees centigrade
Density: 0.984
Melting point: 30-34 degrees centigrade
Flash point: 238 degrees centigrade
Refractive index: 1.489-1.491
Flash point centigrade 210
Water is less than or equal to 0.03
Acid value is less than 0.1 mgKOH/g
The refractive index is greater than or equal to 1.4900 (20 C)
Color = (platinum cobalt) 30
The ester content% (chromatography) more than 99.5
Density (20 C) g/cm3 0.981-0.985
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 cold resistance sequence of the commonly used plasticizers is as follows:
DOS>DOZ>DOA>ED3>DBP>DOP>DIOP>DIDP>DNP>M-50>TCP.
Durability refers to the ability of plasticizers to exist in the plasticity of the plasticized products. Mainly including resistance to mobility, resistance to extractable and volatile and so on.
Migration of plasticizer resistant to migration includes two aspects: first, the exudation of plasticizer from the inside of the product to the outer surface; and the two is the transfer of plasticizer to its solid contact. The migration of plasticizers is related to their compatibility, and the poorer the compatibility, the greater the mobility. In addition, large molecular weight, chain or ring structure plasticizers have good mobility resistance.
The resistance to pumping refers to the tendency of the plasticizer to diffuse into the liquid medium that is in contact with it. The medium is mainly water, solvent, detergent and lubricating oil. In terms of oil resistance and solvent resistance, nonplasticizer with larger proportion of nonpolar alkyl has poor resistance to extraction, and its resistance to extraction is good. The resistance to water is contrary to the above. Polyester is a plasticizer with excellent resistance to extraction.
The tendency to spread from the surface of the product to the air when the volatile index plasticizer is heated. The volatility of plasticizers is related to their molecular weight, and the smaller the general molecular weight, the greater the volatility. From the point of view of molecular structure, the structure of straight chain alkyl is better than that of branched chain alkyl structure. The plasticizer containing ring and other large volume groups has good volatility resistance. The plasticizers, such as polyester, epoxy, DIOP, TCP and pentaerythritol, have good volatility.
The insulation of the plasticizer is not as good as the PVC resin. With the increase of the plasticizer, the electrical insulation of PVC decreases. When the plasticizer is used in PVC insulation, it should be paid attention to its insulation. The insulating order of the commonly used plasticizers is: TCP>DNP>DOP>M-50>ED3>DOS>DBP>DOA.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The direct chain alkyl, side chain alkyl and cyclic alkyl pyrrolidone containing 6-20 carbon are all new plasticizers of PVC. Shi Wancong's article pointed out that plasticizer PVC alkylpyrone can plasticate PVC calender and foam plastics with the new plasticizer of PVC. When using the optimized formula, the new plasticizer of PVC is better than the two phthalate two DINP plasticizer.
The main functions of plasticizer are as follows: 1., reduce the melting temperature and melt viscosity of polymer and reduce the molding temperature; 2., make polymer products have flexibility, elasticity and low temperature resistance. The mechanism of action of plasticizer.
The polarity of plasticizer and resin is different, and its mechanism is different.
The 1. volume effect of this effect is mainly for non polar plasticizers, its mode of action for the middle molecular chain is inserted into the resin, increase the distance between the molecules, thus weaken the force between the molecules, lower melt viscosity, increase the flexibility of polymer chains, such plasticizers added more, the volume effect the larger, and long chain structure increase volume effect of plasticizer ratio of plasticizer large ring structure.
2. this shielding effect is mainly directed against the polar plasticizer, its mode of action to increase the interaction between polar plasticizer and polar polymer instead of the polar attraction between polymer molecules, thus weaken the intermolecular forces, the plasticizing effect is called the shielding effect. Properties of plasticizers
The properties of plasticizers mainly include the following items: plasticizing efficiency, compatibility, cold resistance, durability, heat resistance, insulation, flame retardancy and hygiene.
Plasticizing efficiency is a relative concept of plasticizers' plasticizing capacity or plasticizing effect, and the plasticizing efficiency of different plasticizers is a relative concept. The plasticizing efficiency is generally evaluated by the amount of plasticized dosage that is required to change the quantitative flexible index. The less the plasticizer added, the higher the plasticizing efficiency. General molecular weight plasticizer
The plasticizer of high molecular weight has high plasticizing efficiency for PVC, but with the increase of the polarity of plasticizer, the degree of alkyl branching and the increase of aromatic ring structure decrease the plasticizing efficiency.
The order of plasticizing efficiency of commonly used plasticizers is: DBS>DBP>DOS>DOA>DOP>DIOP>M-50>TCP>PCl-50. Compatibility refers to the compatibility of plasticizers and polymers, and the compatibility of the same plasticizers to different polar polymers is different.
The order of the compatibility of plasticizers to PVC is DBS>DBP>DOP>DIOP>DNP>ED3>DOA>DOS> chlorinated paraffin.
Cold resistance refers to the low temperature resistance of plasticizers. Increased cold tolerance plasticizer and its structure, methylene (CH2) aliphatic acid ester cold two yuan as the main body of the best, is one of the most commonly used cold resistant plasticizer, and containing cyclic and branched plasticizer for polymer in low temperature and the cold resistance movement difficulties excellent.
Physical and chemical properties of two octyl terephthalate (plasticizer DOTP)
Appearance: transparent and colorless liquid
Boiling point: 400 degrees centigrade
Density: 0.984
Melting point: 30-34 degrees centigrade
Flash point: 238 degrees centigrade
Refractive index: 1.489-1.491
Flash point centigrade 210
Water is less than or equal to 0.03
Acid value is less than 0.1 mgKOH/g
The refractive index is greater than or equal to 1.4900 (20 C)
Color = (platinum cobalt) 30
The ester content% (chromatography) more than 99.5
Density (20 C) g/cm3 0.981-0.985
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 cold resistance sequence of the commonly used plasticizers is as follows:
DOS>DOZ>DOA>ED3>DBP>DOP>DIOP>DIDP>DNP>M-50>TCP.
Durability refers to the ability of plasticizers to exist in the plasticity of the plasticized products. Mainly including resistance to mobility, resistance to extractable and volatile and so on.
Migration of plasticizer resistant to migration includes two aspects: first, the exudation of plasticizer from the inside of the product to the outer surface; and the two is the transfer of plasticizer to its solid contact. The migration of plasticizers is related to their compatibility, and the poorer the compatibility, the greater the mobility. In addition, large molecular weight, chain or ring structure plasticizers have good mobility resistance.
The resistance to pumping refers to the tendency of the plasticizer to diffuse into the liquid medium that is in contact with it. The medium is mainly water, solvent, detergent and lubricating oil. In terms of oil resistance and solvent resistance, nonplasticizer with larger proportion of nonpolar alkyl has poor resistance to extraction, and its resistance to extraction is good. The resistance to water is contrary to the above. Polyester is a plasticizer with excellent resistance to extraction.
The tendency to spread from the surface of the product to the air when the volatile index plasticizer is heated. The volatility of plasticizers is related to their molecular weight, and the smaller the general molecular weight, the greater the volatility. From the point of view of molecular structure, the structure of straight chain alkyl is better than that of branched chain alkyl structure. The plasticizer containing ring and other large volume groups has good volatility resistance. The plasticizers, such as polyester, epoxy, DIOP, TCP and pentaerythritol, have good volatility.
The insulation of the plasticizer is not as good as the PVC resin. With the increase of the plasticizer, the electrical insulation of PVC decreases. When the plasticizer is used in PVC insulation, it should be paid attention to its insulation. The insulating order of the commonly used plasticizers is: TCP>DNP>DOP>M-50>ED3>DOS>DBP>DOA.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian