CN103566862A - Chemical reactor with high shearing force - Google Patents
Chemical reactor with high shearing force Download PDFInfo
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- CN103566862A CN103566862A CN201310530259.2A CN201310530259A CN103566862A CN 103566862 A CN103566862 A CN 103566862A CN 201310530259 A CN201310530259 A CN 201310530259A CN 103566862 A CN103566862 A CN 103566862A
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Abstract
The invention relates to the field of high-molecular polymer reaction devices, and particularly relates to a chemical reactor with high shearing force. The chemical reactor comprises a rack, a material barrel and a screw rod, wherein the material barrel is horizontally fixed on the rack; the screw rod is arranged in the material barrel and is divided into a fusion section screw rod and a feeding section screw rod; a feed port is formed in the material barrel at which the feeding section screw rod is arranged; an opening of the material barrel at which the fusion section screw rod is arranged is connected with a connecting barrel; an inner cavity of the connecting barrel is circular arc-shaped; the connecting barrel is internally provided with a circular arc-shaped grinding rod; the grinding rod and the fusion section screw rod are fixedly connected; the outer surface of the grinding rod abuts against the surface of the inner cavity of the connecting barrel; one end, which is not connected with the material barrel, of the connecting barrel is connected with a high shearing barrel; the high shearing barrel is internally provided with a high shearing screw rod; the high shearing screw rod is connected with the grinding rod; one end, which is not connected with the connecting barrel, of the high shearing barrel is provided with a discharge port. The chemical reactor has the beneficial effects that the generated pressure field is more stable, the extrusion efficiency is higher, and the grafting ratio is also higher due to the adoption of a screw shearing method, thus hot melt adhesive products with high performance are prepared.
Description
Technical field
The present invention relates to high molecular polymer reaction unit field, relate in particular to a kind of strong shearing force chemical reactor.
Background technology
PUR, in certain temperature range, its physical state changes with temperature change, and chemical characteristic is constant, it is nonpoisonous and tasteless, belongs to environmental-protecting chemical product.Due to advantages such as its adhesive strength are large, and curing rate is fast, be widely used.In recent years, polyolefin hot-melt, as the staple product in adhesives industries field, showed good growth.In the international market, the market demand of global PUR is by stable the increasing along with the development of rubber industry.And the main production method of current most polyolefin hot-melt is the graft process that adopts peroxide initiation, twin-screw extrusion.Due to the difficulties in dispersion of peroxide,, cause the reasons such as the technique of chain rupture is wayward, cause the defects such as PUR often has stain, yellow point, smell is large, memory time is short, so the Graft Method of force-chemical reaction is more and more subject to people's attention.
Macromolecule force-chemical reaction device is the visual plant of preparing macromolecule product, and for many years, many experts and scholars utilize existing equipment aspect sharp chemical reaction, doing a large amount of work to high molecular polymer.In China, Xu of Sichuan University happy, Wang Qi etc., many scholars of Beijing University of Chemical Technology and South China Science & Engineering University are devoted to the research of macromolecule power chemistry, and macromolecule mechanochemical degradation and copolyreaction have been carried out deeply and the copolymer of a series of block and grafting has been synthesized in the discussion of system.Previously used equipment main still extruder, ball mill, ultrasonic radiation and high-speed stirred etc., mostly by means of existing process equipment, there is certain limitation, extruder is as a kind of plastic molding and processing equipment of special use, the blend for material and modification for material are very effective, but as the research of force-chemical reaction, the research of the effect aspect of the shear action that material is subject to and force-chemical reaction is all limited.Vibromill, by the vibration of steel ball and the collision between spheroid, can make macromolecular material be subject to instantaneous extruding and percussion, material is by contact-impact between spheroid in vibromill, be squeezed collision probability limited, and vibrate required chronicly, the impulsive force being subject to is also limited, more difficultly realize industrialization.
The patent of invention CN1130545A of the Wang Qi of molecular material engineering National Key Laboratory of Sichuan University etc., use the basic principle of macromolecule chemical reaction under effect of stress, deficiency for existing product equipment, use for reference design and the structure of Chinese traditional stone mill, manufactured and designed the pan type physico chemical reactor of the pulverizing, mixing and the force-chemical reaction that can be used for polymer and filler.This reactor, in the process of processing macro-molecular material, can provide larger extruding, shear action, makes material be subject to the multiple effect of stress of all directions and fragmentation produces more effective fragmentation and force-chemical reaction.Realize and adopt field of force technology preparation to there is specific function and high performance new material.In addition, the up-to-date serially connected mill screw extruder of CPJ75/135II of having succeeded in developing of Beijing University of Chemical Technology, the Mechanico-chemical reactor of its design principle and Sichuan University is similar, and difference is single large mill to change into a plurality of little mills, thereby obtain, better extrudes effect.Series disc-screw extruder is controlled mixing three elements by the means such as adjusting of shape, number and the abrasive disk space of mill, is mainly used in producing special high molecule alloy material and high material of filling.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly can provides larger shearing force, and shear pressure is stable, and extrusion efficiency is high, can solve the stain existing in PUR preparation, the strong shearing force chemical reactor of yellow some problem.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of strong shearing force chemical reactor, comprise frame, barrel, screw rod, described barrel is horizontally fixed in described frame, described screw rod is arranged in described barrel rotationally, described screw rod is divided into melt zone screw rod and feeding section screw rod, the residing barrel of described feeding section screw rod is provided with charging aperture, the port of the residing barrel of described melt zone screw rod connects connecting cylinder, the inner chamber of described connecting cylinder is circular-arc for what start to increase gradually to the other end from the link with barrel, in described connecting cylinder, be provided with circular-arc milling bar, described milling bar is fixedly connected with described melt zone screw rod, the surperficial butt of the outer surface of described milling bar and the inner chamber of described connecting cylinder, one end that described connecting cylinder does not connect barrel connects the strong cylinder of shearing, in described strong shearing cylinder, be provided with strong shear screw, described strong shear screw is connected with described milling bar, a described strong one end that does not connect connecting cylinder of shearing is provided with discharging opening.
The invention has the beneficial effects as follows: novel, structure is unique, and larger shear stress field can be provided, and uses a kind of novel grafting method, for the preparation of polyolefin hot-melt provides a kind of brand-new method, thereby solved stain, the yellow some problem existing in PUR preparation.The method that adopts screw thread to shear, the pressure field of generation is more stable, and extrusion efficiency is higher, and percent grafting is also higher, thereby prepares high performance PUR product.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described connecting cylinder is with the connected mode of described barrel and described strong shearing cylinder for being threaded, and described screw thread is reverse thread.
Further, described milling bar is that reverse thread is connected with the connected mode of described screw rod.
Further, described strong shear screw is that reverse thread is connected with the connected mode of described milling bar.
Adopt the beneficial effect of above-mentioned further scheme to be: be threaded and be convenient to dismounting, facilitate processing and manufacturing, and replacing and maintenance in later stage use.
Further, the spiral shell rib on described strong shear screw is the trapezoidal spiral shell rib of bull, and the lead angle of the trapezoidal spiral shell rib of described bull is 30 degree to 65 degree.
Further, the described strong inwall of shearing cylinder is provided with trapezoidal thread groove, and the lift angle of described trapezoidal thread groove is 30 degree to 65 degree.
Adopt the beneficial effect of above-mentioned further scheme to be: the setting of the trapezoidal spiral shell rib of bull and trapezoidal thread groove both can obtain higher extrusion efficiency, can keep higher shearing force field again.
Further, described barrel peripheral hardware having heaters.
Further, described barrel is provided with cooler outward.
Adopt the beneficial effect of above-mentioned further scheme to be: barrel arranges heater and cooler outward to adjust and to keep the temperature stabilization of complete machine each several part and suitable, thereby adjusts friction and the viscous force of materials inside, and then adjusts the stressed and motion state of material.
Accompanying drawing explanation
Fig. 1 is a kind of strong shearing force chemical reactor structural representation of the present invention;
Fig. 2 is the strong shear screw structural representation of a kind of strong shearing force chemical reactor of the present invention;
Fig. 3 is the milling bar structural representation of a kind of strong shearing force chemical reactor of the present invention;
Fig. 4 is the application schematic diagram of a kind of strong shearing force chemical reactor of the present invention.
In accompanying drawing, the list of parts of each label representative is as follows:
1, frame, 2, barrel, 3, screw rod, 3-1, feeding section screw rod, 3-2, melt zone screw rod, 4, charging aperture, 5, connecting cylinder, 6, milling bar, 7, the strong cylinder of shearing, 8, strong shear screw, 9, discharging opening, 10, left-hand thread, 11, the trapezoidal spiral shell rib of bull, 12, left-hand thread groove, 13, thrust bearing, 14, drive link, 15, bearing, 16, motor, 17, trapezoidal thread groove.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of strong shearing force chemical reactor of the present invention, comprise frame 1, barrel 2, screw rod 3, described barrel 2 is horizontally fixed in described frame 1, described screw rod 3 is arranged in described barrel 2 rotationally, described screw rod 3 is divided into melt zone screw rod 3-2 and feeding section screw rod 3-1, the residing barrel 2 of described feeding section screw rod 3-1 is provided with charging aperture 4, the port of the residing barrel 2 of described melt zone screw rod 3-2 connects connecting cylinder 5, the inner chamber of described connecting cylinder 5 is circular-arc for what start to increase gradually to the other end from the link with barrel 2, linkage section is made circular-arc to guarantee that the material of molten state can enter strong shearing section smoothly.In described connecting cylinder 5, be provided with circular-arc milling bar 6, described milling bar 6 is fixedly connected with described melt zone screw rod 3-2, the surface of internal cavity butt of the outer surface of described milling bar 6 and described connecting cylinder 5, one end that described connecting cylinder 5 does not connect barrel 2 connects the strong cylinder 7 of shearing, described connecting cylinder 5 and described barrel 2 and the described strong connected mode of shearing cylinder 7 are for being threaded, described screw thread is reverse thread (contrary with motor steering), there will not be the loosening phenomenon that is threaded when guaranteeing to move.In described strong shearing cylinder 7, be provided with strong shear screw 8, described strong shear screw 8 is connected with described milling bar 6, described milling bar 6 is that reverse thread 10 is connected with the connected mode of described screw rod 3 and described strong shear screw 8, and one end is provided with described strong shearing cylinder 7 one end that do not connect connecting cylinder 5 and is provided with discharging opening 9.
As described in Figure 2, spiral shell rib on described strong shear screw 8 is the trapezoidal spiral shell rib 11 of bull, the lead angle of the trapezoidal spiral shell rib of described bull is 30 degree to 65 degree, it is the connecting screw rod of left-hand thread 10 that one end of described strong shear screw 8 is provided with surface, strong shear screw 8 connects on the left-hand thread groove 12 of milling bar 6 by connecting screw rod, as described in Figure 3, thus be connected with milling bar 6.The described strong inwall of shearing cylinder is provided with trapezoidal thread groove, and the lift angle of described trapezoidal thread groove is 30 degree to 65 degree.
As described in Figure 4 for the application schematic diagram of a kind of strong shearing force chemical reactor of the present invention, feeding section screw rod 3-1 in apparatus of the present invention connects motor 16 by drive link 14, described motor 16 drives screw rod 3, milling bar 6 and strong shear screw 8 to rotate by drive link 14, and described drive link 14 relies on thrust bearing 13 and bearing 15 supportings.
Described barrel also can arrange heater and cooler outward, to adjust and to keep the temperature stabilization of complete machine each several part and suitable, thereby adjusts friction and the viscous force of materials inside, and then adjusts the stressed and motion state of material.
In the process of high molecular polymer, powerful extruding, shear action can be provided, make the molten state high molecular polymer being extruded be subject to the shear action of all directions and chain rupture phenomenon occurs.The in the situation that of adding again appropriate maleic anhydride polar materials in hot conditions with without peroxide initiator and active fracture free radical generation graft reaction, thereby realized the grafting of no initiator.In the grafting masterbatch of realizing, molecular weight distribution is narrower, further improves graft effect and improves percent grafting.Improve quality and the bond effect of PUR product.
The present invention is for polyolefinic grafting provides a kind of new thinking, is different from solution graft copolymerization, radiation grafting, the grafting of free radical high temperature, light initiation polymerization grafting and is different from again force-chemical reaction solid phase grafting technology.The chain rupture phenomenon of only utilizing strong shear to produce due to this grafting method, the in the situation that of adding appropriate maleic anhydride isopolarity group in hot conditions with without peroxide initiator and active fracture free radical generation graft reaction, thereby realized the grafting of no initiator, avoid occurring yellow point, stain in product, and can improve percent grafting.The strong shearing force that this device produces can preferentially realize the chain rupture to long-chain macromolecule, and therefore in grafting masterbatch in the cards, molecular weight distribution is narrower, and bond effect can more be optimized and produce uniformly to the grafting masterbatch of producing in PUR.
Advantage of the present invention is as follows:
1. strong shearing force chemical reactor is novel, structure is unique, and larger shear stress field can be provided, and uses a kind of novel grafting method, for the preparation of polyolefin hot-melt provides a kind of brand-new method, thereby solved stain, the yellow some problem existing in PUR preparation.
2. the method that adopts screw thread to shear, the pressure field of generation is more stable, and extrusion efficiency is higher, and percent grafting is also higher, thereby prepares high performance PUR product.
3. in extruding operation, change the gap of strong cutting out section screw rod and barrel, or the shearing force field that the trapezoidal thread groove shape that changes strong cutting out section screw rod all can change while extruding distributes, improved the adaptability of Mechanico-chemical reactor.
4. strong cutting out section and linkage section are all detachable, facilitate processing and manufacturing, and replacing and maintenance in later stage use.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. one kind strong shearing force chemical reactor, comprise frame, barrel, screw rod, described barrel is horizontally fixed in described frame, described screw rod is arranged in described barrel rotationally, described screw rod is divided into melt zone screw rod and feeding section screw rod, the residing barrel of described feeding section screw rod is provided with charging aperture, it is characterized in that, the port of the residing barrel of described melt zone screw rod connects connecting cylinder, the inner chamber of described connecting cylinder is circular-arc for what start to increase gradually to the other end from the link with barrel, in described connecting cylinder, be provided with circular-arc milling bar, described milling bar is fixedly connected with described melt zone screw rod, the surperficial butt of the outer surface of described milling bar and the inner chamber of described connecting cylinder, one end that described connecting cylinder does not connect barrel connects the strong cylinder of shearing, in described strong shearing cylinder, be provided with strong shear screw, described strong shear screw is connected with described milling bar, a described strong one end that does not connect connecting cylinder of shearing is provided with discharging opening.
2. a kind of strong shearing force chemical reactor according to claim 1, is characterized in that, described connecting cylinder is with the connected mode of described barrel and described strong shearing cylinder for being threaded, and described screw thread is reverse thread.
3. a kind of strong shearing force chemical reactor according to claim 1 and 2, is characterized in that, described milling bar is that reverse thread is connected with the connected mode of described screw rod.
4. a kind of strong shearing force chemical reactor according to claim 3, is characterized in that, described strong shear screw is that reverse thread is connected with the connected mode of described milling bar.
5. a kind of strong shearing force chemical reactor according to claim 1, is characterized in that, the spiral shell rib on described strong shear screw is the trapezoidal spiral shell rib of bull, and the lead angle of the trapezoidal spiral shell rib of described bull is 30 degree to 65 degree.
6. a kind of strong shearing force chemical reactor according to claim 1 or 5, is characterized in that, the described strong inwall of shearing cylinder is provided with trapezoidal thread groove, and the lift angle of described trapezoidal thread groove is 30 degree to 65 degree.
7. a kind of strong shearing force chemical reactor according to claim 1, is characterized in that, described barrel peripheral hardware having heaters.
8. according to a kind of strong shearing force chemical reactor described in claim 1 or 7, it is characterized in that, described barrel is provided with cooler outward.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310530259.2A CN103566862B (en) | 2013-11-01 | 2013-11-01 | A kind of Strong shear Mechanico-chemical reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310530259.2A CN103566862B (en) | 2013-11-01 | 2013-11-01 | A kind of Strong shear Mechanico-chemical reactor |
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| CN103566862A true CN103566862A (en) | 2014-02-12 |
| CN103566862B CN103566862B (en) | 2015-10-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807522A (en) * | 2017-03-22 | 2017-06-09 | 贵州大学 | A kind of environmentally friendly grinding device for building |
| CN108178738A (en) * | 2017-11-22 | 2018-06-19 | 凯莱英生命科学技术(天津)有限公司 | Metformin hydrochloride synthesis system and preparation method |
| CN113166018A (en) * | 2018-11-13 | 2021-07-23 | 巴斯夫欧洲公司 | Apparatus and method for preparing pseudoionone and hydroxy pseudoionone |
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| CN2485126Y (en) * | 2001-06-14 | 2002-04-10 | 徐凌秀 | Single screw-rod nanoscale plastic extruder |
| JP2009248422A (en) * | 2008-04-04 | 2009-10-29 | Teijin Chem Ltd | Molding method of aromatic polycarbonate resin molded product and molded product thereof |
| WO2012073969A1 (en) * | 2010-11-30 | 2012-06-07 | 三菱瓦斯化学株式会社 | Molded article having excellent fuel barrier properties |
| CN202572898U (en) * | 2012-04-04 | 2012-12-05 | 荆州龙海塑胶机械有限公司 | Special screw for injection molding machine for molding transparent plastic products |
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Patent Citations (5)
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| CN2461755Y (en) * | 2000-03-15 | 2001-11-28 | 马拉特·阿列克谢耶维奇·格里什科夫 | Screw |
| CN2485126Y (en) * | 2001-06-14 | 2002-04-10 | 徐凌秀 | Single screw-rod nanoscale plastic extruder |
| JP2009248422A (en) * | 2008-04-04 | 2009-10-29 | Teijin Chem Ltd | Molding method of aromatic polycarbonate resin molded product and molded product thereof |
| WO2012073969A1 (en) * | 2010-11-30 | 2012-06-07 | 三菱瓦斯化学株式会社 | Molded article having excellent fuel barrier properties |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106807522A (en) * | 2017-03-22 | 2017-06-09 | 贵州大学 | A kind of environmentally friendly grinding device for building |
| CN108178738A (en) * | 2017-11-22 | 2018-06-19 | 凯莱英生命科学技术(天津)有限公司 | Metformin hydrochloride synthesis system and preparation method |
| CN108178738B (en) * | 2017-11-22 | 2020-09-22 | 凯莱英生命科学技术(天津)有限公司 | Metformin hydrochloride synthesis system and preparation method |
| CN113166018A (en) * | 2018-11-13 | 2021-07-23 | 巴斯夫欧洲公司 | Apparatus and method for preparing pseudoionone and hydroxy pseudoionone |
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| CN103566862B (en) | 2015-10-07 |
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Effective date of registration: 20210210 Address after: 454950 600 meters northeast of baoanzhuang village, Dafeng Town, Taofeng Industrial Zone, Wuzhi County, Jiaozuo City, Henan Province Patentee after: Jiaozuo Yutong Plastic Technology Co.,Ltd. Address before: 030024 No. 79 West Main Street, Taiyuan, Shanxi, Yingze Patentee before: Taiyuan University of Technology |