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Plasticizers of PVC plastic soft products
2017-12-12 11:14:11
Plasticizers of PVC plastic soft products
PVC plastic softening plasticizer is usually an ester of high boiling point liquid or low melting point solid. The effect of PVC plastic soft product plasticizer is to reduce the melt viscosity and melting temperature of the polymer, increase the plasticity and fluidity, and make the products flexible. The above effect is called plasticization.
The softening point, vitrification temperature, brittleness, hardness, tensile strength and modulus of elasticity of the PVC plastic soft plasticized plasticizer were decreased, while the cold resistance, flexibility and elongation increased. A large number of plasticizers are required to be added to the soft products produced by PVC plastics.
The general ideal plasticizer should have the following conditions:
(1) better compatibility with resin
(2) high plasticizing efficiency
(3) the effect of plasticization is persistent and the volatility is low
(4) better light and thermal stability
(5) good physical and mechanical properties
The compatibility of plasticizers and resins. It can be divided into two major categories: plasticizers and auxiliary plasticizers. The main plasticizer has good compatibility with the polymer and can be used alone.
The compatibility between auxiliary plasticizer and resin is poor. Generally, it can not be used alone. It is easy to seep out with a slightly larger volume and can only be used together with main plasticizers, so as to reduce costs or give some special properties to products.
Application performance classification. Heat-resistant plasticizers, such as dipentaerythritol ester, benzoic acid ester and so on. Cold resistant plasticizers, such as two octyl sebacic acid, adipic acid two Octyl and so on. Light - resistant and hot plasticizers, such as epoxy soybean oil, epoxy eighteen acid octyl, etc. Flame-retardant plasticizers, such as phosphoric acid vinegar and chlorinated plasticizer.
Nontoxic plasticizers, such as phthalic acid esters, epoxy soybean oil, and so on. Mould Resistant plasticizers, such as phosphates.
Classification by chemical structure according to the characteristics of chemical structure is the most common classification method at present.
(1) phthalic acid esters (phthalic acid esters) are the most widely used plasticizers, usually used as main plasticizers. For example, adjacent benzene two formic acid two ester and dibutyl phthalate belong to this kind of plasticizer.
Phosphates, such plasticizers, have good compatibility with PVC: resin, with flame retardancy and sterilizability, large migration, poor oil resistance and heat resistance, most of which are toxic plasticizers. It is mainly phosphoric acid three octanoic acid, phosphoric acid three benzyl ester, trimethyl phosphate and so on.
Two octyl terephthalate (plasticizer DOTP) raw materials are generally synthesized from the process route of terephthalic acid or two methyl terephthalate as raw material.
Safety data for export goods of two octyl terephthalate (plasticizer DOTP)
CAS No.:6422-86-2
State of the goods: export by general goods.
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 aliphatic dicarboxylic acid ester, alkyl cyclohexyl, Fang Ji, n 4, 7, 8 integer. This kind of plasticizer is poor in compatibility with PVC resin, and is also poor in resistance to extraction and resistance to mobility, but it has excellent low temperature properties and is mainly used as a cold resistant plasticizer. The main varieties are two octyl sebacate, two butyl sebacate, two octyl adipic acid, and two octyl diacid, and so on.
(4) epoxy plasticizers such plasticizers not only have plasticizing effect in PVC resin, but also play a stabilizing role, because molecules contain epoxy groups (HCl) which can be released from PVC degradation.
Such plasticizers are generally used as auxiliary plasticizers, which can be divided into two categories, one is epoxy glycerides, and its compatibility with resins is poor, because of its low volatility and small mobility. Oil and heat resistance are good, non-toxic and fast developing. The main varieties are epoxidized soybean oil. The second type is epoxy fatty acid monoesters. It has good low temperature resistance and large mobility. The octyl ester of epoxy stearate is widely used.
Others are epoxy four hydrogen phthalate two formic acid esters: their structure is due to the two structures of benzene, two formic acid and epoxy, so it has both comprehensive properties of o-benzoic acid two ester and epoxy compound. The properties of epoxy four - H - phthalic - two - formic acid two octyl ester are comprehensive. It can be used as the main plasticizer.
Chlorinated plasticizers mainly include chlorinated paraffin, chlorinated fatty acid ester, alkyl sulfonate benzyl chloride and chlorinated biphenyl. The compatibility of PVC resin is poor, which is determined by two factors, one is the number of carbon atoms on the chain, and the two is the amount of chlorine. The increase of chlorine content can increase the compatibility with PVC, but the higher the chlorine content, the less the number of carbon atoms on the chain and the increase of the volatility.
When the chlorine content is constant, the increase of the carbon chain length reduces the volatility and reduces the compatibility with PVC. The chlorine content of chlorinated paraffin is usually 35% ~ 70%. As an auxiliary plasticizer of PVC, the content of chlorine is 50%, and the carbon chain is suitable for 15 carbon atoms. The products with high chlorine content are mainly made of flame retardant, and the main varieties are chlorinated hydrocarbon -50, five chloride stearate methyl ester and so on.
The polyester by diacids and diols polymerization and the relative molecular mass of 1000 ~ 8000. Such plasticizers have low plasticizing efficiency, but have low volatility, small mobility, and oil and solvent extraction. Such as decanediol propanediol polyester, adipic acid propylene glycol polyester and so on belong to such plasticizer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
PVC plastic softening plasticizer is usually an ester of high boiling point liquid or low melting point solid. The effect of PVC plastic soft product plasticizer is to reduce the melt viscosity and melting temperature of the polymer, increase the plasticity and fluidity, and make the products flexible. The above effect is called plasticization.
The softening point, vitrification temperature, brittleness, hardness, tensile strength and modulus of elasticity of the PVC plastic soft plasticized plasticizer were decreased, while the cold resistance, flexibility and elongation increased. A large number of plasticizers are required to be added to the soft products produced by PVC plastics.
The general ideal plasticizer should have the following conditions:
(1) better compatibility with resin
(2) high plasticizing efficiency
(3) the effect of plasticization is persistent and the volatility is low
(4) better light and thermal stability
(5) good physical and mechanical properties
The compatibility of plasticizers and resins. It can be divided into two major categories: plasticizers and auxiliary plasticizers. The main plasticizer has good compatibility with the polymer and can be used alone.
The compatibility between auxiliary plasticizer and resin is poor. Generally, it can not be used alone. It is easy to seep out with a slightly larger volume and can only be used together with main plasticizers, so as to reduce costs or give some special properties to products.
Application performance classification. Heat-resistant plasticizers, such as dipentaerythritol ester, benzoic acid ester and so on. Cold resistant plasticizers, such as two octyl sebacic acid, adipic acid two Octyl and so on. Light - resistant and hot plasticizers, such as epoxy soybean oil, epoxy eighteen acid octyl, etc. Flame-retardant plasticizers, such as phosphoric acid vinegar and chlorinated plasticizer.
Nontoxic plasticizers, such as phthalic acid esters, epoxy soybean oil, and so on. Mould Resistant plasticizers, such as phosphates.
Classification by chemical structure according to the characteristics of chemical structure is the most common classification method at present.
(1) phthalic acid esters (phthalic acid esters) are the most widely used plasticizers, usually used as main plasticizers. For example, adjacent benzene two formic acid two ester and dibutyl phthalate belong to this kind of plasticizer.
Phosphates, such plasticizers, have good compatibility with PVC: resin, with flame retardancy and sterilizability, large migration, poor oil resistance and heat resistance, most of which are toxic plasticizers. It is mainly phosphoric acid three octanoic acid, phosphoric acid three benzyl ester, trimethyl phosphate and so on.
Two octyl terephthalate (plasticizer DOTP) raw materials are generally synthesized from the process route of terephthalic acid or two methyl terephthalate as raw material.
Safety data for export goods of two octyl terephthalate (plasticizer DOTP)
CAS No.:6422-86-2
State of the goods: export by general goods.
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 aliphatic dicarboxylic acid ester, alkyl cyclohexyl, Fang Ji, n 4, 7, 8 integer. This kind of plasticizer is poor in compatibility with PVC resin, and is also poor in resistance to extraction and resistance to mobility, but it has excellent low temperature properties and is mainly used as a cold resistant plasticizer. The main varieties are two octyl sebacate, two butyl sebacate, two octyl adipic acid, and two octyl diacid, and so on.
(4) epoxy plasticizers such plasticizers not only have plasticizing effect in PVC resin, but also play a stabilizing role, because molecules contain epoxy groups (HCl) which can be released from PVC degradation.
Such plasticizers are generally used as auxiliary plasticizers, which can be divided into two categories, one is epoxy glycerides, and its compatibility with resins is poor, because of its low volatility and small mobility. Oil and heat resistance are good, non-toxic and fast developing. The main varieties are epoxidized soybean oil. The second type is epoxy fatty acid monoesters. It has good low temperature resistance and large mobility. The octyl ester of epoxy stearate is widely used.
Others are epoxy four hydrogen phthalate two formic acid esters: their structure is due to the two structures of benzene, two formic acid and epoxy, so it has both comprehensive properties of o-benzoic acid two ester and epoxy compound. The properties of epoxy four - H - phthalic - two - formic acid two octyl ester are comprehensive. It can be used as the main plasticizer.
Chlorinated plasticizers mainly include chlorinated paraffin, chlorinated fatty acid ester, alkyl sulfonate benzyl chloride and chlorinated biphenyl. The compatibility of PVC resin is poor, which is determined by two factors, one is the number of carbon atoms on the chain, and the two is the amount of chlorine. The increase of chlorine content can increase the compatibility with PVC, but the higher the chlorine content, the less the number of carbon atoms on the chain and the increase of the volatility.
When the chlorine content is constant, the increase of the carbon chain length reduces the volatility and reduces the compatibility with PVC. The chlorine content of chlorinated paraffin is usually 35% ~ 70%. As an auxiliary plasticizer of PVC, the content of chlorine is 50%, and the carbon chain is suitable for 15 carbon atoms. The products with high chlorine content are mainly made of flame retardant, and the main varieties are chlorinated hydrocarbon -50, five chloride stearate methyl ester and so on.
The polyester by diacids and diols polymerization and the relative molecular mass of 1000 ~ 8000. Such plasticizers have low plasticizing efficiency, but have low volatility, small mobility, and oil and solvent extraction. Such as decanediol propanediol polyester, adipic acid propylene glycol polyester and so on belong to such plasticizer.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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