CN204454969U - The synthesizer of high tensile film level PET polyester slice - Google Patents
The synthesizer of high tensile film level PET polyester slice Download PDFInfo
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- CN204454969U CN204454969U CN201520021563.9U CN201520021563U CN204454969U CN 204454969 U CN204454969 U CN 204454969U CN 201520021563 U CN201520021563 U CN 201520021563U CN 204454969 U CN204454969 U CN 204454969U
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Abstract
A kind of synthesizer of high tensile film level PET polyester slice, comprise the reaction kettle of the esterification, precondensation still and the whole polycondensation vessel that connect successively, it is characterized in that this synthesizer also comprises the first preparation mechanism, the second preparation mechanism and ethylene glycol steam vacuum system, this the first preparation mechanism has the first ethylene glycol opening for feed and Third monomer opening for feed, aforesaid second preparation mechanism has the second ethylene glycol opening for feed and additive opening for feed, and aforesaid ethylene glycol steam vacuum system is connected with precondensation still and whole polycondensation vessel respectively.Further, transferpump is provided with between the discharge end of described precondensation still and the feed end of whole polycondensation vessel.Compared with prior art, the utility model has the advantage of: by adding Third monomer, be optimized design to process unit, improve crystal property and the flexibility of PET molecule, the breaking tenacity of final product significantly improves simultaneously.
Description
Technical field
The utility model relates to a kind of synthesizer of PET polyester slice, belongs to Process Technology of Polymer equipment technical field.
Background technology
That produces, sells and uses both at home and abroad at present moulds volume product, is all for raw material manufactures flat filament, then braided packing article with acrylic resins (PP) or polyethylene (PE).Polyethylene terephthalate (PET) polyester is widely used in daily life, as Plastic Bottle, fiber product, film etc., closely bound up with the life of people, because the mechanical property of PET, uvioresistant performance, resistance to low temperature are all good than PP, PE, therefore utilizing PET to produce woven bag has obvious advantage than PP, PE.But PET material be applied to mould compile industry also rarely have report.
Because the intensity of PET is high, rigidity is strong, draw at PET in the process of stretching drawing and filament forming and there is embrittlement, poor toughness, easily rupture, the problems such as the flat filament of pull-out is uneven, insufficient strength, also do not utilize PET material to produce flat filament both at home and abroad and then are woven into the method for bag.
Utility model content
Technical problem to be solved in the utility model is the synthesizer providing a kind of tensile strength film level PET polyester slice for the above-mentioned state of the art.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of synthesizer of high tensile film level PET polyester slice, comprise the reaction kettle of the esterification connected successively, precondensation still and whole polycondensation vessel, it is characterized in that this synthesizer also comprises the first preparation mechanism, second preparation mechanism and ethylene glycol steam vacuum system, this the first preparation mechanism has the first ethylene glycol opening for feed and Third monomer opening for feed, aforesaid second preparation mechanism has the second ethylene glycol opening for feed and additive opening for feed, aforesaid ethylene glycol steam vacuum system is connected with precondensation still and whole polycondensation vessel respectively,
Described reaction kettle of the esterification is connected with monoethylene glycol backflow mechanism, PTA storage tank and slurry preparation tank, the opening for feed of this slurry preparation tank is connected aforesaid first preparation mechanism and the second preparation mechanism respectively by the first volume pump with the second volume pump, and aforesaid PTA storage tank is connected with reaction kettle of the esterification by a flow control valve.
As preferably, described ethylene glycol backflow mechanism comprises process tower, reflux exchanger and reflux pump, and the liquid feeding end of aforesaid reflux exchanger and inlet end are respectively with the outlet side of process tower with reflux to hold and be connected, and aforementioned reflux pump is then connected with the outlet end of process tower.
Further, the first described preparation mechanism comprises interconnective two the first preparing tanks, and the second described preparation mechanism comprises interconnective two the second preparing tanks.
As preferably, described ethylene glycol steam vacuum mechanism comprises
Three grades of steam mechanisms, comprise the first injector, first-stage condenser, second injector, secondary condenser three grades of injectors and the three grades of condensers that connect successively;
First condenser, one end is connected with precondensation still, and the other end is connected with aforesaid second injector;
Second condenser, one end is connected with whole polycondensation vessel, and the other end is connected with aforesaid first injector;
Vaporizer, is connected with aforesaid first injector, second injector and three grades of injectors respectively;
Vacuum pump, is connected with aforesaid three grades of condensers; And
Ethylene glycol receiving tank, liquid feeding end is connected with aforesaid first-stage condenser, secondary condenser and three grades of condensers respectively.
Further, transferpump is provided with between the discharge end of described precondensation still and the feed end of whole polycondensation vessel.
Compared with prior art, the utility model has the advantage of: by adding Third monomer, design is optimized to process unit simultaneously, improve crystal property and the flexibility of PET molecule, make PET in the course of processing, slow down crystallization rate, low molecular degree of crystallinity is fallen, flexible increase, be conducive to traction and stretch, the breaking tenacity of final product significantly improves.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Figure 1, the synthesizer of the high tensile film level PET polyester slice in the present embodiment comprises reaction kettle of the esterification 1, precondensation still 2 and the whole polycondensation vessel 3, first connected successively and prepares mechanism, the second preparation mechanism and ethylene glycol steam vacuum system, first preparation mechanism has the first ethylene glycol opening for feed and Third monomer opening for feed, second preparation mechanism has the second ethylene glycol opening for feed and catalyst feeds, and ethylene glycol steam vacuum system is connected with precondensation still 2 and whole polycondensation vessel 3 respectively; Be provided with transferpump 95, PTA storage tank 7 between the discharge end of precondensation still 2 and the feed end of whole polycondensation vessel 3 to be connected with reaction kettle of the esterification 1 by a flow control valve 71.
Reaction kettle of the esterification 1 is connected with monoethylene glycol backflow mechanism, PTA storage tank 7 and slurry preparation tank, and the opening for feed of this slurry preparation tank 10 is connected the first preparation mechanism and the second preparation mechanism respectively by the first volume pump 92 with the second volume pump 91.
Ethylene glycol backflow mechanism comprises process tower 11, reflux exchanger 12 and reflux pump 94, and the liquid feeding end of reflux exchanger 12 is connected with refluxing to hold with the outlet side of process tower 11 respectively with inlet end, and reflux pump 94 is connected with the outlet end of process tower 11.
First preparation mechanism comprises interconnective two the first preparing tanks 51, second preparation mechanisms and comprises interconnective two the second preparing tanks 61.
Ethylene glycol steam vacuum mechanism comprises three grades of steam mechanisms, the first condenser 81, second condenser 82, vaporizer 47, vacuum pump 96 and ethylene glycol receiving tank 4, three grades of steam mechanisms and comprises the first injector 41, first-stage condenser 42, second injector 43, secondary condenser 44, three grades of injectors 45 and the three grades of condensers 46 that connect successively; First condenser 81 one end is connected with precondensation still 2, the other end is connected with second injector 43, second condenser 82 one end is connected with whole polycondensation vessel 3, the other end is connected with first injector 41, vaporizer 47 is connected with first injector 41, second injector 43 and three grades of injectors 45 respectively, vacuum pump 96 is connected with three grades of condensers 46, and ethylene glycol receiving tank 4 liquid feeding end is connected with first-stage condenser 42, secondary condenser 44 and three grades of condensers 46 respectively.
Use embodiment 1, take pure terephthalic acid (PTA) 15KG, ethylene glycol (EG) 6.44KG, glycol ether 0.22Kg (addition 2%), antimony glycol 6.08g, first be modulated into slurry, then PTA slurry is utilized in pump continus convergence to esterification groove carry out first stage esterification.With the air in nitrogen replacement esterification groove, replace conjunction, the rotating speed of agitator is 60rpm, frequency 50HZ, be heated to more than 190 DEG C and carry out esterification, esterification reaction temperature is between 240 ~ 245 DEG C, esterification pressures is between 0.2 ~ 0.25MPa (relative pressure), reaction time of esterification 3 hours, material temperature when esterification completes about 250 DEG C, when esterification completes, esterification yield is higher than 95%.The ethylene glycol formed in esterification reaction process and water etc., enter distillation tower via vaporizing tube and be separated.Esterification groove is back to again from the ethylene glycol of distillation tower bottom collection.By the monomer that above-mentioned esterification is made, be delivered to polycondensation groove and carry out polycondensation; The monomer that this esterification completes first carries out vacuum prepolymerization reaction, and reaction pressure drops to 200Pa (absolute pressure) gradually by normal pressure, and temperature of reaction is 265 ~ 275 DEG C, and the reaction times is 1 hour; Follow-uply under the environment of high vacuum, carry out whole polycondensation, reaction pressure is lower than 130Pa (absolute pressure), temperature of reaction progressively raises from 275 DEG C, the viscosity of polymkeric substance also progressively improves, when under the torsion that agitator remains identical, turn down the frequency of agitator, rotating speed drops to about 25rpm, polymeric last temperature is 282 DEG C, and the reaction times is 78 minutes; Polymer is cut into non-crystalline state ground sections through discharging chilling, dries made ground sections, and PET drawing wire machine carries out traction and stretches, carry out every detection, it is the results detailed in Table shown in 1.
Use embodiment 2, as the practice of embodiment 1, but add the glycol ether of 3%, when polymeric temperature reaches 280.0 DEG C, polymer is cut into the former grain of non-crystalline state through discharging chilling, made ground sections is dried, PET drawing wire machine carries out traction and stretches, carry out every detection, it is the results detailed in Table shown in 1.
Use embodiment 3, as the practice of embodiment 1, but glycol ether is changed into the PEG-200 of 0.5%, when polymeric temperature reaches 280.0 DEG C, polymer is cut into the former grain of non-crystalline state through discharging chilling, made ground sections is dried, PET drawing wire machine carries out traction and stretches, carry out every detection, it is the results detailed in Table shown in 1.
Use embodiment 4, the ground sections made by embodiment 2 is carried out thickening 8h in solid-phase tack producing rotary drum, the outer temperature of rotary drum is set to 220 DEG C, and prepared section is carried out traction and stretched on PET drawing wire machine, and carry out every detection, it is the results detailed in Table shown in 1.
Use embodiment 5, the ground sections made by embodiment 2 is carried out thickening 10h in solid-phase tack producing rotary drum, the outer temperature of rotary drum is set to 220 DEG C, and prepared section is carried out traction and stretched on PET drawing wire machine, and carry out every detection, it is the results detailed in Table shown in 1.
Result
Through the use embodiment 1 ~ 5 shown in comparison sheet 1, can obtain drawing a conclusion:
Use the PET polyester slice of embodiment 1 to 3, viscosity about 0.61, draw the single wire fracture intensity of the preparation that stretches at about 230MPa, use the PET polyester slice of embodiment 4 to 5, viscosity promote, institute draw stretching prepare single wire fracture intensity at more than 410MPa.The viscosity of section raises, and the breaking tenacity of monofilament promotes obviously.
Add appropriate flexible unit, improve the limiting viscosity of PET section, PET monofilament can reach the requirement of PP monofilament.
The performance of table 1PET monofilament
Claims (5)
1. the synthesizer of a high tensile film level PET polyester slice, comprise the reaction kettle of the esterification, precondensation still and the whole polycondensation vessel that connect successively, it is characterized in that this synthesizer also comprises the first preparation mechanism, the second preparation mechanism and ethylene glycol steam vacuum system, this the first preparation mechanism has the first ethylene glycol opening for feed and Third monomer opening for feed, aforesaid second preparation mechanism has the second ethylene glycol opening for feed and additive opening for feed, and aforesaid ethylene glycol steam vacuum system is connected with precondensation still and whole polycondensation vessel respectively;
Described reaction kettle of the esterification is connected with monoethylene glycol backflow mechanism, PTA storage tank and slurry preparation tank, the opening for feed of this slurry preparation tank is connected aforesaid first preparation mechanism and the second preparation mechanism respectively by the first volume pump with the second volume pump, and aforesaid PTA storage tank is connected with reaction kettle of the esterification by a flow control valve.
2. the synthesizer of high tensile film level PET polyester slice according to claim 1, it is characterized in that described ethylene glycol backflow mechanism comprises process tower, reflux exchanger and reflux pump, the liquid feeding end of aforesaid reflux exchanger is connected with refluxing to hold with the outlet side of process tower respectively with inlet end, and aforementioned reflux pump is then connected with the outlet end of process tower.
3. the synthesizer of high tensile film level PET polyester slice according to claim 1, it is characterized in that the first described preparation mechanism comprises interconnective two the first preparing tanks, the second described preparation mechanism comprises interconnective two the second preparing tanks.
4. the synthesizer of high tensile film level PET polyester slice according to claim 1, is characterized in that described ethylene glycol steam vacuum mechanism comprises
Three grades of steam mechanisms, comprise the first injector, first-stage condenser, second injector, secondary condenser three grades of injectors and the three grades of condensers that connect successively;
First condenser, one end is connected with precondensation still, and the other end is connected with aforesaid second injector;
Second condenser, one end is connected with whole polycondensation vessel, and the other end is connected with aforesaid first injector;
Vaporizer, is connected with aforesaid first injector, second injector and three grades of injectors respectively;
Vacuum pump, is connected with aforesaid three grades of condensers; And
Ethylene glycol receiving tank, liquid feeding end is connected with aforesaid first-stage condenser, secondary condenser and three grades of condensers respectively.
5. the synthesizer of high tensile film level PET polyester slice according to claim 1, is characterized in that being provided with transferpump between the discharge end of described precondensation still and the feed end of whole polycondensation vessel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520021563.9U CN204454969U (en) | 2015-01-13 | 2015-01-13 | The synthesizer of high tensile film level PET polyester slice |
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| CN201520021563.9U CN204454969U (en) | 2015-01-13 | 2015-01-13 | The synthesizer of high tensile film level PET polyester slice |
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| CN204454969U true CN204454969U (en) | 2015-07-08 |
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Address after: 314415 Zhejiang province Haining city Jianshan District Road No. 15 Wen Patentee after: Wankai new materials Co., Ltd Address before: 314415 Zhejiang province Haining city Jianshan District Road No. 15 Wen Patentee before: ZHEJIANG WANKAI NEW MATERIALS Co.,Ltd. |