CN2217463Y

CN2217463Y - Dynamic chemical reactor

Info

Publication number: CN2217463Y
Application number: CN 95242817
Authority: CN
Inventors: 徐僖; 王琪
Original assignee: Sichuan Union University
Current assignee: Sichuan Union University
Priority date: 1995-03-06
Filing date: 1995-03-06
Publication date: 1996-01-17
Anticipated expiration: 2005-03-06

Abstract

The utility model discloses a chemical reactor, which is characterized in that a fixing grinding disc (2) is fixed on a casing body, and a rotary grinding disc (3) is fixed on the rotary shaft of a frame (11); the grinding disc (3) can be driven by the rotary shaft on a transmission device (12) driven by a motor (10) to be rotated. During the course of processing high molecular materials, the reactor can provide strong extrusion and shearing actions, and thus, the materials can be broken by receiving a plurality of stress actions such as vertical stress, circumferential stress, shearing stress, and other stresses; compared with available processing apparatuses, the breaking and force chemical reactions which are more effective can be generated; the moving course, the reaction mechanism, the changing of configuration and structures, and the new paths of materials performance changing and processing of the high-molecular material in the new mechanochemical reactor can be searched; making new materials with special functions and high performances by adopting force field technology can be realized.

Description

Mechanico-chemical reactor

The utility model belongs to polymer force-chemical reaction and process equipment field.

The research of macromolecule power chemistry provides new method and approach for the modification and the preparation of macromolecular material.For many years, the various countries scholar utilizes existing process equipment such as extruder, vibromill, ultrasound wave irradiation and high-speed stirred etc. doing a large amount of work aspect the force-chemical reaction of polymeric solid, solution and melt.Kunio Arisawa etc. has studied the degraded K.Arisawa of polystyrene (PS) melt in extrusion, R.S.Porter, and J.PolymerSci.Vol.14 P879-896 (1970) H.TaKahashi has studied in ultra-high shear field (10 ⁴-10 ⁷s ^-1) under, the effect of dissolving each other of styrene one acrylonitrile copolymer (SAN)/Merlon (PC), H.Takahashi et al, J.Appl.The later stages fifties such as Polym.Sci.36 1821 (1980) Chinese scholar Xu happy begin to be devoted to the research of macromolecule power chemistry, the mechanochemical degradation of Polymer Solution and copolyreaction have been carried out deeply and the discussion of system has been synthesized block/graft copolymer that the general chemical method of a series of usefulness is difficult to synthesize with high-speed stirred and ultrasound wave irradiation method.These copolymers respectively have its particular performances, can be used for the bulking agent of some incompatible polymer system, the chemical agent of gathering in the oil field, fluid drag-reduction agent, metal cold working lubricant and novel synthetic fibers.The academic meeting proceedings of Chinese Academy of Sciences's macromolecule 1961 Science Presses such as Xu's happy, Ye Shen, KeqiangChen, Qi Wang, Huili and Xi Xu, J.Macromol.sci.Chem.A23 (12), 1415 (1986), Xi Xu Qi Wang andHui Lin li, J.Macromol.Sci.Chem.A23 (12), 1433 (1986).

Macromolecular solid muscle power chemical aspect, S.Murakami etc. have studied the polymerisation that the active particle that produces by the inorganic compound of milling causes ethene and propylene monomer, S.Mura-kami et al, J.Appl.Polym.Sci.29,29 (1984), the pure mechanochemical degradation dynamics of studying polyvinyl chloride (PVC)/Merlon (PC) copolymer of a specified duration of gold, gold is pure for a long time, material 24 (382) 91 (1985) C.V.Oprea etc. have studied by vibromill and freezing method and have made PVC and benzidine and p-phenylenediamine (PPD) reaction, improved the heat endurance of PVC, C.V.Oprea et al, Revue Roum-aine de Chemie29 (8), 683 (1984).The method of usefulness vibromills such as Xu's happy has been studied the copolyreaction of PVC and methacrylaldehyde, to improve the heat endurance of PVC, dielectricity and goods hardness etc., Xu's happy, the academic meeting proceedings of Chinese Academy of Sciences's macromolecule 1961 Science Presses such as Zhang Suying.

These achievements in research, abundant and developed macromolecule power chemistry, but device therefor mainly still is extruder, ball mill, ultrasound wave irradiation and high-speed stirred etc., mostly by means of existing process equipment, certain limitation is arranged, and extruder is as a kind of plastic molding and processing equipment of special use, and is very effective for the blend and the modification of material, but as the research of power chemistry, the shear action that material is subjected to and the effect of force-chemical reaction all are limited.Vibromill, by the vibration of steel ball and the collision between spheroid, can make macromolecular material be subjected to instantaneous extruding and percussion, material is by contact-impact between the spheroid in the vibromill, and the probability of the collision that is squeezed is limited, and the vibration required time is very long, tens hours at least, up to a hundred hours at most, the impulsive force that is subjected to was also limited, difficult realization industrialization.Ultrasound wave irradiation and high-speed stirred etc. also are the power chemical research that carries out polymer solution or emulsion by existing equipment, are of limited application.

The purpose of this utility model is to use for reference the ingenious design of Chinese traditional stone mill and the characteristics of unique texture at the deficiencies in the prior art, design and made the pulverizing that can be used for polymer and filler voluntarily, the novel Mechanico-chemical reactor of millstones shape of mixing and force-chemical reaction, this reactor is in the process of processing macro-molecular material, powerful extruding can be provided, shear action, material is subjected to vertically, hoop, the effect of multiple stress such as shearing and fragmentation, produce existing more effective pulverizing of process equipment and force-chemical reaction, can explore the motion process of macromolecular material in new Mechanico-chemical reactor, reaction mechanism, the new way of the variation of morphosis and material modification and processing.Realize adopting field of force technology preparation to have specific function and high performance new material.

The Mechanico-chemical reactor that the utility model provides as shown in Figure 1 and Figure 2.

Fig. 1 is the pan type physico chemical reactor structural representation:

1 loading hopper, 2 fixing mills, 3 rotary grinding disks, 4 feeding spiro rods, 5 handles, 6 medium inlets, 7 defeated material flexible pipes, 8 discharging openings, 9 inert gas entrances, 10 motors, 11 supports, 12 transmission devices.

Fig. 2 is fixing mill structural representation.

Fig. 3 is the rotary grinding disk structural representation.

13 connecting holes, 14 charging apertures, 15 deflector chutes.

Mechanico-chemical reactor is fixed on the housing by fixing mill 2, and rotary grinding disk 3 is fixed on In the rotating shaft on the frame 11, by rotating shaft band movable grinding disc on motor 10 drive transmissions 12 3 rotate, and the pressure between flour milling can be regulated by handle 5, and whole system is closed, entrance 6 can lead to cooling or heat medium adjusting temperature, and discharging opening 8 sides can be led to inert gas shielding, thing Material enters stressed reaction in the mill from loading hopper 1 continuously through feeding spiro rod 4, and reactant is from conveying Flexible pipe 7 is to discharging opening 8 dischargings.

The fixedly mill 2 of Mechanico-chemical reactor and rotary grinding disk 3 are by the antifriction metal (AFM) manufacturing and through table The inserted flour milling engagement of face specially treated has connecting hole 13 in the flour milling, charging aperture 14, Deflector chute 15, flour milling are provided with some roll flute grooves, and the inclination angle between the roll flute groove is 5～25 °, roll flute groove rib is wide to be 0.1～2.0 millimeter.

Mechanico-chemical reactor can be, and vertical, horizontal and series, parallel and their combining form are that polymer force-chemical reaction and processing method have been opened up new way.

The application comparative example of Mechanico-chemical reactor is provided with reference to the accompanying drawings:

The comparative example 1:

Polyethylene (PE) vibrates 24 hours in vibromill, the material no change, and in the utility model reactor, less than 20 minutes, material was broken levigate, through once milling (from being fed to discharging less than 1 minute), material is just broken broken.

The comparative example 2:

Brittle polymer polypropylene (PP), pellet, particle diameter 0.6～0.9mm in vibromill, vibrates 24 hours, only has seldom partly to be pulverized, and in the utility model reactor, mills 15 times (about 18 minutes), and particle mean size is reduced to 1.73 μ m.

Embodiment 3:

Polystyrene, particle diameter 3.0～4.6mm, mean molecule quantity M _n=1.06 * 10 ⁵, M _w=3.05 * 10 ⁵Mill (about 17 minutes) after 15 times, average grain diameter is 1.53 μ m, and mean molecule quantity drops to M _n=0.74 * 10 ⁵, M _w=2.82 * 10 ⁵

The utlity model has following advantage:

1, Mechanico-chemical reactor is novel, and is ingenious, and the structure uniqueness can provide powerful squeezing Pressure, shearing and circumference stress effect.

2, the movement locus of material in reactor is a helix, and the reactor radius is little, But material from be fed to discharging the path of process very big, be conducive to pulverizing and the reaction of material.

3, the reaction time weak point is with Chinese characteristics, and the industrial applications prospect is arranged very much.

4, fragility and toughness polymer all there are good pulverizing and degradation.

5, can be used as polymer-polymer, polymer-monomer, the polyalcohol-filling material system is carried out the reactor of combined polymerization under the stress effect.

Claims

1; a kind of Mechanico-chemical reactor; it is characterized in that this Mechanico-chemical reactor is fixed on the housing by fixing mill (2); rotary grinding disk (3) is fixed in the rotating shaft on the support (11); go up rotating shaft by motor (10) drive transmission (12) and drive mill (3) rotation; flour milling spacing or pressure are regulated by handle (5); whole system is closed; inlet (6) can lead to cooling or heat medium is regulated temperature; discharging opening (8) side can be led to inert gas shielding; material enters stressed reaction in the mill from loading hopper (1) continuously through feeding spiro rod (4), and reactant expects that from defeated flexible pipe (7) is to discharging opening (8) discharging.

2, according to the described Mechanico-chemical reactor of claim 1, it is characterized in that the fixedly mill (2) of this Mechanico-chemical reactor and rotary grinding disk (3) are by the antifriction metal (AFM) manufacturing and through the inserted flour milling engagement of surperficial specially treated, connecting hole (13) is arranged in the flour milling, charging aperture (14), guide groove (15), flour milling is provided with some roll flute grooves, and the inclination angle between the roll flute groove is 5-25 °, and roll flute groove rib is wide to be 0.1～2.0 millimeter.