CN103865211B - A kind of electric wire polyester-polyvinyl chloride composite plastic and preparation method thereof - Google Patents
A kind of electric wire polyester-polyvinyl chloride composite plastic and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of electric wire polyester-polyvinyl chloride composite plastic and preparation method thereof, it is characterized in that, the mass percent of its raw material is: modified poly ester is 1 ~ 10%, and auxiliary agent is 0.1 ~ 1%, blue Masterbatch is 0.1 ~ 5%, and modified polyvinyl chloride is surplus; By modified poly ester, auxiliary agent, blue Masterbatch, modified polyvinyl chloride mixes according to proportioning, and then melt pelletization can obtain polyester-polyvinyl chloride composite plastic.Technical process of the present invention is simple, is easy to large-scale production.
Description
[technical field]
The present invention relates to electric power field of material technology, specifically, is a kind of electric wire polyester-polyvinyl chloride composite plastic and preparation method thereof.
[background technology]
The insulation layer of plastic insulating power cable is plastics, and conventional plastics have polyvinyl chloride, polyethylene, crosslinked polyethylene.Plastic cable structure is simple, manufactures easy to process, lightweight, and laying installation is convenient, is not laid drop and limits.Therefore mesolow cable is made in widespread use, and has the trend replacing viscosity impregnation oils paper cable.Its disadvantage there is poplar bundles punch-through, which has limited it in more high-tension use.
China's economic growth continuously and healthily, for cable products provides the huge market space, the incentive that Chinese market is strong, makes the world all sight be focused on Chinese market, in the decades that reform and opening-up is short, the huge throughput that Chinese cable manufacturing industry is formed allows the world regard with special esteem.
In November, 2008, China is the crisis of reply world financial, and government decided drops into 4 trillion yuan promote domestic demands, wherein has about more than 40% for urban and rural power grids construction and upgrading.Whole nation wires and cables industry has had again the good market opportunity, and various places electric wire enterprise seizes the opportunity, and meets the construction and upgrading of new round urban and rural power grids.
Wires and cables industry is the second largest industry that China is only second to automobile industry, and range of product Service Efficiency and domestic market occupation rate are all more than 90%.Worldwide, the Chinese electric wire gross output value exceedes the U.S., becomes first electric wire producing country in the world.Along with Chinese wires and cables industry high speed development, creation of new enterprise quantity constantly rises, and industry overall technology level is largely increased.
Along with the continuous expansion of the industry sizes such as China electric power industry, data corresponding industry, urban track traffic industry, car industry and shipbuilding, also will increase rapidly the demand of electric wire, following electric wire industry also has huge development potentiality.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, a kind of electric wire polyester-polyvinyl chloride composite plastic and preparation method thereof is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of electric wire polyester-polyvinyl chloride composite plastic, it is characterized in that, the mass percent of its raw material is:
The massfraction of described modified poly ester is preferably 4 ~ 8%; The best is 6%.
Described auxiliary agent is SAG compatilizer, purchased from Nantong Zhi Sheng company.
Described blue Masterbatch is commercially available prod, purchased from Shanghai Chemical Co., Ltd. in midsummer.
The preparation method of described modified poly ester, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1: 1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) then under nitrogen protection, with surface-functionalized inorganic particle, terephthalic acid; ethylene glycol is raw material; carry out the first step esterification, and then in second step prepolymerization reaction process, add polyvalent alcohol carry out copolycondensation, then prepare modified poly ester through the whole polycondensation of the 3rd step.
In described the first step esterification, the molar ratio of raw material terephthalic acid and ethylene glycol is 1: 1.25 ~ 1.75, and inorganic particle addition is 3.0 ~ 6.5wt% of terephthalic acid massfraction.
Described the first step esterification is under nitrogen protection, inorganic particle first dispersion making beating in ethylene glycol solution, and then under pressure is 0.3 ~ 0.4MPa condition, polyprotonic acid and ethylene glycol carry out esterification, and temperature of reaction, at 220 ~ 250 DEG C, reacts 3 ~ 4h.
Described second step prepolymerization reaction, polyol starting material is sorbyl alcohol or tetramethylolmethane; In raw material, the mol ratio of terephthalic acid and polyvalent alcohol is 1: 0.002 ~ 0.008.
Described second step prepolymerization reaction, controls temperature of reaction at 260 ~ 280 DEG C, keeps 2 ~ 3h.
The whole polycondensation of the 3rd described step, control low vacuum in 60Pa, temperature of reaction is at 270 ~ 290 DEG C, and the reaction times is 2 ~ 4h.
The preparation method of described modified polyvinyl chloride, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1: 1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) raw rice husk stalk is carbonized, obtain the powdered rice hulls after carbonizing, then the powdered rice hulls after charing is dissolved in the vitriol oil, obtains the powdered rice hulls after acidifying;
Described charring process is the segmentation charing adopting quartz tube furnace to carry out coconut husk: rise to 150 DEG C with the temperature rise rate of 10 DEG C/min, coconut husk carbonizes 50min at 150 DEG C, then 300 DEG C are risen to the temperature rise rate of 10 DEG C/min, again at 300 DEG C of charing 50min, finally rise to 400 DEG C with the temperature rise rate of 5 DEG C/min, and carbonize process 2 ~ 3h at such a temperature; Ground at high energy ball mill by obtained product after charing, until finely powdered, namely obtain the powdered rice hulls after carbonizing, the particle diameter of powdered rice hulls is 0.01 ~ 2 μm; Adopt low-temperature carbonization, save cost on the one hand, keep the original function of rice husk in addition on the one hand, rice husk stalk effect can be played as the carrier of absorption, the temperature of charing is too high and long, will destroy original performance of rice husk stalk, Here it is low temperature and the slow feature carbonized.
(3) the surface-functionalized inorganic particle that step (1) obtains is joined step (2) and obtain the powdered rice hulls after acidifying, carry out ultrasonic disperse 40min; Carry out centrifugation after dispersion to carry out drying again and can obtain functionalized particles;
The mass ratio of the powdered rice hulls after the charing of described surface-functionalized inorganic particle and step (2) is 1: 9;
(4) step (3) being obtained functionalized particles joins in particulate polyvinyl chloride, carries out mixing and melt pelletization, obtains modified polyvinyl chloride, and wherein functionalized particles accounts for the massfraction of modified polyvinyl chloride is 0.2 ~ 0.6%.
A kind of electric wire polyester-polyvinyl chloride composite plastic, by modified poly ester, auxiliary agent, blue Masterbatch, modified polyvinyl chloride mixes according to proportioning, and then melt pelletization can obtain polyester-polyvinyl chloride composite plastic.
The present invention also provides another one technical scheme, i.e. a kind of elastic composite plastics for power domain.
For elastic composite plastics for power domain, it is characterized in that, the mass percent of its raw material is:
Described SBS is the segmented copolymer of vinylbenzene and divinyl.
Described PBT is writing a Chinese character in simplified form of polybutylene terephthalate.
The mass percent of described modified poly ester is 5%.
The mass percent of described SBS particle is 5%.
Wherein, the preparation method of described modified poly ester and the preparation method of modified polyvinyl chloride are with the preparation method of modified poly ester in electric wire polyester-polyvinyl chloride composite plastic and the preparation method of modified polyvinyl chloride.Elastic composite plastics for power domain simply increase a SBS component, suitably to increase the elasticity of plastics, are easy to processing and produce.
For a preparation method for the elastic composite plastics of power domain, various raw material mixing melt extrudes by it, can obtain elastic composite plastics.
Described SBS particle can be replaced by PBT particle, can obtain a kind of polyvinyl chloride multifunctional cable material of electric power.
For a modified polyvinyl chloride composite plastic for power domain, it is characterized in that, the mass percent of its raw material is:
Described SBS is the segmented copolymer of vinylbenzene and divinyl.
The mass percent of described modified poly ester is 2%.
The mass percent of described SBS particle is 5%.
Low-density polyethylene in the technical program can be replaced by PBT particle, can obtain a kind of polyvinyl chloride material containing nanoparticle of electric power.
Compared with prior art, positively effect of the present invention is:
The present invention is in the method by chemical graft copolymerization, polyester backbone is introduced uvioresistant function nano particle, realize polyester flame-retardant performance, adopt the method for in-situ polymerization modification simultaneously, surface modified granules and polymer raw is made to add in poly-unit, for the dispersion of physics nanoparticle, improve the homogeneity of fire-retardant particle in polymerization rear copolymer.
The present invention carries out the effect of chemical bond by the powdered rice hulls of amidized inorganic particle and acidifying, utilizes the adsorption of powdered rice hulls self simultaneously, makes the combination of inorganic particle and powdered rice hulls more tight, is conducive to the flame retardant efficiency slowly playing inorganic particle.
Technical process of the present invention is simple, is easy to large-scale production.
[embodiment]
The embodiment of a kind of electric wire polyester-polyvinyl chloride composite plastic of the present invention and preparation method thereof is below provided.
Embodiment 1
A kind of electric wire polyester-polyvinyl chloride composite plastic, it is characterized in that, the mass percent of its raw material is:
Described auxiliary agent is SAG compatilizer, purchased from Nantong Zhi Sheng company.
Described blue Masterbatch is commercially available prod, purchased from Shanghai Chemical Co., Ltd. in midsummer.
The preparation method of described modified poly ester, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl leucoaurin TMOS, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1: 1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) then under nitrogen protection, with surface-functionalized inorganic particle, terephthalic acid; ethylene glycol is raw material; carry out the first step esterification, and then in second step prepolymerization reaction process, add polyvalent alcohol carry out copolycondensation, then prepare modified poly ester through the whole polycondensation of the 3rd step.
In described the first step esterification, the molar ratio of raw material terephthalic acid and ethylene glycol is 1: 1.35, and inorganic particle addition is the 3.5wt% of terephthalic acid massfraction.
Described the first step esterification is under nitrogen protection, inorganic particle first dispersion making beating in ethylene glycol solution, and then under pressure is 0.3 ~ 0.4MPa condition, polyprotonic acid and ethylene glycol carry out esterification, and temperature of reaction, at 220 ~ 250 DEG C, reacts 3 ~ 4h.
Described second step prepolymerization reaction, polyol starting material is sorbyl alcohol or tetramethylolmethane; In raw material, the mol ratio of terephthalic acid and polyvalent alcohol is 1: 0.003.
Described second step prepolymerization reaction, controls temperature of reaction at 260 ~ 280 DEG C, keeps 2 ~ 3h.
The whole polycondensation of the 3rd described step, control low vacuum in 60Pa, temperature of reaction is at 270 ~ 290 DEG C, and the reaction times is 2 ~ 4h.
The preparation method of described modified polyvinyl chloride, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1: 1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) raw rice husk stalk is carbonized, obtain the powdered rice hulls after carbonizing, then the powdered rice hulls after charing is dissolved in the vitriol oil, obtains the powdered rice hulls after acidifying;
Described charring process is the segmentation charing adopting quartz tube furnace to carry out coconut husk: rise to 150 DEG C with the temperature rise rate of 10 DEG C/min, coconut husk carbonizes 50min at 150 DEG C, then 300 DEG C are risen to the temperature rise rate of 10 DEG C/min, again at 300 DEG C of charing 50min, finally rise to 400 DEG C with the temperature rise rate of 5 DEG C/min, and carbonize process 2 ~ 3h at such a temperature; Ground at high energy ball mill by obtained product after charing, until finely powdered, namely obtain the powdered rice hulls after carbonizing, the particle diameter of powdered rice hulls is 0.01 ~ 2 μm; Adopt low-temperature carbonization, save cost on the one hand, keep the original function of rice husk in addition on the one hand, rice husk stalk effect can be played as the carrier of absorption, the temperature of charing is too high and long, will destroy original performance of rice husk stalk, Here it is low temperature and the slow feature carbonized.
(3) the surface-functionalized inorganic particle that step (1) obtains is joined step (2) and obtain the powdered rice hulls after acidifying, carry out ultrasonic disperse 40min; Carry out centrifugation after dispersion to carry out drying again and can obtain functionalized particles;
The mass ratio of the powdered rice hulls after the charing of described surface-functionalized inorganic particle and step (2) is 1: 9;
(4) step (3) being obtained functionalized particles joins in particulate polyvinyl chloride, carries out mixing and melt pelletization, obtains modified polyvinyl chloride, and wherein functionalized particles accounts for the massfraction of modified polyvinyl chloride is 0.2%.
A preparation method for electric wire polyester-polyvinyl chloride composite plastic, its concrete steps, by modified poly ester, auxiliary agent, blue Masterbatch, modified polyvinyl chloride mixes according to proportioning, and then melt pelletization can obtain polyester-polyvinyl chloride composite plastic.
Embodiment 2-10
A kind of electric wire polyester-polyvinyl chloride composite plastic, it is characterized in that, the mass percent of its raw material is, in table 1.
Table 1
| Modified poly ester % | Auxiliary agent % | Blue Masterbatch % | Modified polyvinyl chloride % | |
| Embodiment 1 | 1 | 0.1 | 0.3 | 98.6 |
| Embodiment 2 | 2 | 0.2 | 1 | 96.8 |
| Embodiment 3 | 3 | 0.3 | 1.5 | 95.2 |
| Embodiment 4 | 4 | 0.4 | 2 | 93.6 |
| Embodiment 5 | 5 | 0.5 | 2.5 | 92 |
| Embodiment 6 | 6 | 0.6 | 3 | 90.4 |
| Embodiment 7 | 7 | 0.7 | 3.5 | 88.8 |
| Embodiment 8 | 8 | 0.8 | 4 | 87.2 |
| Embodiment 9 | 9 | 0.9 | 4.5 | 85.6 |
| Embodiment 10 | 10 | 1 | 5 | 84 |
The preparation method of the modified poly ester of embodiment 2-5, with embodiment 1.
The preparation method of the modified poly ester of embodiment 6, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1: 1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) then under nitrogen protection, with surface-functionalized inorganic particle, terephthalic acid; ethylene glycol is raw material; carry out the first step esterification, and then in second step prepolymerization reaction process, add polyvalent alcohol carry out copolycondensation, then prepare modified poly ester through the whole polycondensation of the 3rd step.
In described the first step esterification, the molar ratio of raw material terephthalic acid and ethylene glycol is 1: 1.6, and inorganic particle addition is the 6wt% of terephthalic acid massfraction.
Described the first step esterification is under nitrogen protection, inorganic particle first dispersion making beating in ethylene glycol solution, and then under pressure is 0.3 ~ 0.4MPa condition, polyprotonic acid and ethylene glycol carry out esterification, and temperature of reaction, at 220 ~ 250 DEG C, reacts 3 ~ 4h.
Described second step prepolymerization reaction, polyol starting material is sorbyl alcohol or tetramethylolmethane; In raw material, the mol ratio of terephthalic acid and polyvalent alcohol is 1: 0.006.
Described second step prepolymerization reaction, controls temperature of reaction at 260 ~ 280 DEG C, keeps 2 ~ 3h.
The whole polycondensation of the 3rd described step, control low vacuum in 60Pa, temperature of reaction is at 270 ~ 290 DEG C, and the reaction times is 2 ~ 4h.
The preparation method of the modified poly ester of embodiment 7-10, with embodiment 6.
The preparation method of the modified polyvinyl chloride of embodiment 2-5, with embodiment 1.
The preparation method of the modified polyvinyl chloride of embodiment 6, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
(2) raw rice husk stalk is carbonized, obtain the powdered rice hulls after carbonizing, then the powdered rice hulls after charing is dissolved in the vitriol oil, obtains the powdered rice hulls after acidifying;
Described charring process is the segmentation charing adopting quartz tube furnace to carry out coconut husk: rise to 150 DEG C with the temperature rise rate of 10 DEG C/min, coconut husk carbonizes 50min at 150 DEG C, then 300 DEG C are risen to the temperature rise rate of 10 DEG C/min, again at 300 DEG C of charing 50min, finally rise to 400 DEG C with the temperature rise rate of 5 DEG C/min, and carbonize process 2 ~ 3h at such a temperature; Ground at high energy ball mill by obtained product after charing, until finely powdered, namely obtain the powdered rice hulls after carbonizing, the particle diameter of powdered rice hulls is 0.01 ~ 2 μm; Adopt low-temperature carbonization, save cost on the one hand, keep the original function of rice husk in addition on the one hand, rice husk stalk effect can be played as the carrier of absorption, the temperature of charing is too high and long, will destroy original performance of rice husk stalk, Here it is low temperature and the slow feature carbonized.
(3) the surface-functionalized inorganic particle that step (1) obtains is joined step (2) and obtain the powdered rice hulls after acidifying, carry out ultrasonic disperse 40min; Carry out centrifugation after dispersion to carry out drying again and can obtain functionalized particles;
The mass ratio of the powdered rice hulls after the charing of described surface-functionalized inorganic particle and step (2) is 1: 9;
(4) step (3) being obtained functionalized particles joins in particulate polyvinyl chloride, carries out mixing and melt pelletization, obtains modified polyvinyl chloride, and wherein functionalized particles accounts for the massfraction of modified polyvinyl chloride is 0.5%.
The preparation method of the modified poly ester of embodiment 7-10, with embodiment 6.
The preparation method of a kind of electric wire polyester-polyvinyl chloride composite plastic of embodiment 2-10, with embodiment 1.Embodiment 11
For elastic composite plastics for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
The SBS particle of the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride multifunctional cable material of electric power.
Embodiment 12
For elastic composite plastics for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
The SBS particle of the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride multifunctional cable material of electric power.
Embodiment 13
For elastic composite plastics for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
The SBS particle of the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride multifunctional cable material of electric power.
Embodiment 14
For a modified polyvinyl chloride composite plastic for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
Low-density polyethylene in the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride material containing nanoparticle of electric power.
Embodiment 15
For a modified polyvinyl chloride composite plastic for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
Low-density polyethylene in the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride material containing nanoparticle of electric power.
Embodiment 16
For a modified polyvinyl chloride composite plastic for power domain, it is characterized in that, the mass percent of its raw material is:
The preparation method of modified poly ester is with embodiment 1;
The preparation method of modified polyvinyl chloride is with embodiment 1.
Low-density polyethylene in the present embodiment can be replaced by PBT particle, can obtain a kind of polyvinyl chloride material containing nanoparticle of electric power.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (4)
1. electric wire polyester-polyvinyl chloride composite plastic, is characterized in that, the mass percent of its raw material is:
Modified poly ester 1 ~ 10%
Auxiliary agent 0.1 ~ 1%
Blue Masterbatch 0.1 ~ 5%
Modified polyvinyl chloride surplus
The concrete steps of the preparation method of described modified polyvinyl chloride are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1:1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) raw rice husk stalk is carbonized, obtain the powdered rice hulls after carbonizing, then the powdered rice hulls after charing is dissolved in the vitriol oil, obtains the powdered rice hulls after acidifying;
(3) the surface-functionalized inorganic particle that step (1) obtains is joined step (2) and obtain the powdered rice hulls after acidifying, carry out ultrasonic disperse 40min; Carry out centrifugation after dispersion to carry out drying again and can obtain functionalized particles;
(4) step (3) being obtained functionalized particles joins in particulate polyvinyl chloride, carries out mixing and melt pelletization, obtains modified polyvinyl chloride, and wherein functionalized particles accounts for the massfraction of modified polyvinyl chloride is 0.2 ~ 0.6%;
The mass ratio of the powdered rice hulls after the charing of described surface-functionalized inorganic particle and step (2) is 1:9;
The preparation method of described modified poly ester, its concrete steps are:
(1) dispersed inorganic particles under alcohol is solvent condition, described alcoholic solution is ethanol, methyl alcohol or aqueous isopropanol; Then in the basic conditions, add aminopropyl trimethoxy silane, after reaction, carry out centrifugation, vacuum-drying is carried out to solid and prepares surface-functionalized inorganic particle;
Described inorganic particle concentration in alcoholic solution is 5 ~ 35kg/m
3, it is 8.5 ~ 9.5 that system pH controls, and temperature of reaction is 60 ~ 75 DEG C, and the reaction times is 150 ~ 240min;
Described inorganic particle is nano-indium stannum oxide and nano indium oxide antimony, and the mass ratio of the two is 1:1; Median size is 10 ~ 50nm, adopts ultrasonic disperse 40min in alcoholic solution dispersion process;
(2) then under nitrogen protection, with surface-functionalized inorganic particle, terephthalic acid, ethylene glycol is raw material, carry out the first step esterification, and then in second step prepolymerization reaction process, add polyvalent alcohol carry out copolycondensation, then prepare modified poly ester through the whole polycondensation of the 3rd step;
In described the first step esterification, the molar ratio of raw material terephthalic acid and ethylene glycol is 1:1.25 ~ 1.75, and inorganic particle addition is 3.0 ~ 6.5% of terephthalic acid massfraction;
Described the first step esterification is under nitrogen protection, inorganic particle first dispersion making beating in ethylene glycol solution, and then under pressure is 0.3 ~ 0.4MPa condition, polyprotonic acid and ethylene glycol carry out esterification, and temperature of reaction, at 220 ~ 250 DEG C, reacts 3 ~ 4h;
Described second step prepolymerization reaction, polyol starting material is sorbyl alcohol or tetramethylolmethane; In raw material, the mol ratio of terephthalic acid and polyvalent alcohol is 1:0.002 ~ 0.008;
Described second step prepolymerization reaction, controls temperature of reaction at 260 ~ 280 DEG C, keeps 2 ~ 3h;
The whole polycondensation of the 3rd described step, control low vacuum in 60Pa, temperature of reaction is at 270 ~ 290 DEG C, and the reaction times is 2 ~ 4h.
2. a kind of electric wire polyester-polyvinyl chloride composite plastic as claimed in claim 1, is characterized in that, the massfraction of described modified poly ester is 4 ~ 8%.
3. a kind of electric wire polyester-polyvinyl chloride composite plastic as claimed in claim 1, it is characterized in that, described auxiliary agent is SAG compatilizer, purchased from Nantong Zhi Sheng company.
4. a kind of electric wire polyester-polyvinyl chloride composite plastic as claimed in claim 1, it is characterized in that, described blue Masterbatch is commercially available prod, purchased from Shanghai Chemical Co., Ltd. in midsummer.
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