CN208443691U - The rotary extrusion processing rheometer of polyalcohol pressure or/and shear rheology can be measured simultaneously - Google Patents
The rotary extrusion processing rheometer of polyalcohol pressure or/and shear rheology can be measured simultaneously Download PDFInfo
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- CN208443691U CN208443691U CN201820468248.4U CN201820468248U CN208443691U CN 208443691 U CN208443691 U CN 208443691U CN 201820468248 U CN201820468248 U CN 201820468248U CN 208443691 U CN208443691 U CN 208443691U
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Abstract
The utility model discloses the rotary extrusions that can measure polyalcohol pressure or/and shear rheology simultaneously to process rheometer, the processing rheometer includes sequentially connected melting extrusion mechanism, rotary extrusion rheology head, and sensor, drive sprocket, shaft coupling, motor and control mechanism for monitoring, the rotary extrusion rheology head are made of connecting pipe, shunting bracket, lower machine neck, nose piece, mouth mold, mouth mold drive sprocket, plug and plug driving mechanism.Some parameter values of above-mentioned rheometer can be formerly collected using the utility model, and rheological behaviour of polymer melt during rotary extrusion then is calculated using the formula of derivation.The utility model not only can measure rheological behaviour of the polymer under the different field of forces such as pressure flow, drag flow, the compound flowing of pressure/towing, carries out theoretical direction to actual processing process, can also prepare high-performance polymer micro-pipe.
Description
Technical field
The utility model belongs to polymeric rheology test and processing unit (plant) technical field, and in particular to a kind of to measure simultaneously
The rotary extrusion of polyalcohol pressure or/and shear rheology processes rheometer.
Background technique
Most polymer are all that machine-shaping rear is needed to can be used.But in different processing temperature fields, stress field
Under the action of, orientation texture, crystalline texture and the final article construction of polymer can change, to influence outside product
Sight and quality.Therefore, the complex condition of actual processing, the rheological behaviour of polymer, the formation of multi-level Multi-scale model and
Determine structure and mechanism study, is the key foundation problem in science that technical field of polymer processing needs to study always, and this problem
Solution be to need the scientific instrument of advanced design to cooperate progress.For the rheological behaviour of Study Polymer Melts, develop at present
A variety of rheometers are disclosed, the most commonly used is extrusion rheometers and rotary rheometer:
(1) high pressure capillary rheometer: high pressure capillary rheometer be by polymer under constant speed or constant pressure extrusion neck ring mold,
To pressure flow behavior of the Study Polymer Melts in round tube, and measure the shear viscosity (Couch of polymer under high-rate of shear
M.A., (16) Binding D.M., Polymer, 2000,41: 6323-6334.) flow measurement equipment.Capillary rheometer
Be develop at present Study Polymer Melts rheological behaviour the most mature extrusion rheometer, Unfortunately its measuring principle
It is to be based on the one-dimensional pressure flow of melt, cannot reflects the rheological behaviour of the complex condition polymer of actual processing, thus to poly-
The guidance for closing object processing is only limitted to single extrusion.
(2) plate rheometer: plate rheometer is to generate simple shear by parallel-plate rotary motion, makes polymer melt
Drag flow is generated between two blocks of parallel-plates, the torque that melt acts in fixed plate can be measured by sensor, then be passed through
The parameters such as radius, the revolving speed of plate calculate the rheological curve of melt.Though most-often used in plate rheometer and flow measurement
One of rotation rheology measuring instrument, the revolving speed of plate is controllable very slowly in addition, therefore is usually used in measuring under low shear rate
Polymer shearing and normal stress difference (Sui C.P., McKenna G.B., Rheologica Acta, 2007,46
(6), 877-888.), but since its measuring principle is also only to be limited based on the orientation θ drag flow the guidance of Polymer Processing
In single shearing behavior, plate is when driving melt rotation in addition, because melt is in open state, therefore when rotor speed increases
To it is very high when, melt edge can rupture, on measurement result influence it is very big.
Not only need to measure polymer melt specific in view of a kind of more practical Polymer Processing flow measurement device
Under the conditions of rheological parameter, and its parameter value measured also needs to accurately reflect stream of the polymer in actual machining process as far as possible
Become characteristic, to be likely to carry out theoretical direction to the actual processing process of polymer.And polymer is in molding process,
When it is acted on by the three-dimensional compound force field in the axial compressive force flowing field of force and circumferential towing shearing force field, it is clear that above-mentioned to be based on
The rheometer of single model foundation such as high pressure capillary rheometer and plate rheometer are pole to the actual processing guidance of polymer
It is limited.
Summary of the invention
The purpose of this utility model be in view of the deficiencies of the prior art, provide it is a kind of can measure simultaneously polyalcohol pressure or/
Process rheometer with the rotary extrusion of shear rheology, i.e., the processing rheometer can measure simultaneously polymer in complex pressure or/and
Rheological parameter under compound force field and temperature field is sheared, theory is provided refers to for the preparation process of polymer especially polymer pipe
It leads, additionally it is possible to prepare high-performance polymer micro-pipe under using pressure or/and shearing compound force field and temperature field.
It a kind of rotary extrusion that can measure polyalcohol pressure or/and shear rheology simultaneously is provided processes rheometer to reach
Purpose, the utility model use following technical scheme.
A kind of rotary extrusion processing rheometer that can measure polyalcohol pressure or/and shear rheology simultaneously, the processing rheology
Instrument includes sequentially connected melting extrusion mechanism, rotary extrusion rheology head and sensor, drive sprocket, shaft coupling, motor
With control mechanism for monitoring, it is characterised in that the rotary extrusion rheology head is by connecting pipe, shunts bracket, lower machine neck, machine
Head, mouth mold, mouth mold drive sprocket, plug and plug driving mechanism are constituted, and connecting pipe, shunting bracket and nose piece pass through company
Fitting is successively linked together, and lower machine neck is located in the cavity shunted between bracket and nose piece, and mouth mold activity is fixed on nose piece
In the cavity of rear end, and it is connected with the mouth mold drive sprocket outside handpiece body end face, plug is located in lower machine neck, handpiece body and mouth mold
In channel, one end is connected with the plug driving mechanism being located in shunting bracket, and sensor is divided into pressure sensor and torque passes
Sensor, pressure sensor are placed in the ladder hole of handpiece body side, torque sensor be mounted on drive sprocket and motor it
Between shaft coupling on, the two with control measuring mechanism be connected.
Wherein for the cross sectional shape of the connecting pipe in " convex " shape, left and right ends is ring flange, and is squeezed with melting
Melt feed-throughs are provided in the middle part of the connected left disk of mechanism out, the feed-throughs second half section is in horn mouth open cavity, with shunting
The back taper protrusion of bracket one end matches.
Wherein the shunting bracket frame body leading portion is back taper protrusion, is had on the frame body of middle section one along the bottom of back taper protrusion
While what is extended outward to form matches the ring flange of connection, the frame body side between two ring flange disks with connecting pipe and nose piece
It is downwardly extending a cylinder, back segment frame body outer diameter is less than middle section frame body outer diameter and the ladder hole internal diameter with lower machine throat end
Match；Back taper convex outer surface is provided with arc " recessed " slot melt material runner, between every two arc " recessed " slot melt material runner
There is the muscle of a protrusion；In shunting bracket frame body, back segment be horizontally opened with a ladder blind hole, below the middle section frame body for shunting bracket
Cylinder in be provided with ladder hole, the ladder hole is vertical with the cecum of ladder blind hole to be communicated, and other end end is with holes by one
Cover plate for sealing；Be located at upside protrusion muscle middle section frame body on be also provided with a venthole, the venthole also with ladder blind hole
Cecum communicates.
Wherein the lower machine neck is outer shaped like a tubular cone, is inside provided with ladder hole.
Wherein the handpiece body is a cylinder, is ring flange with one end end for being connected of bracket is shunted, before cylinder, middle section
Interior be provided with along axial direction is cylindrical in shape funnel shaped open cavity, is vertically provided with one on the cylinder of funnel cavity bottle neck starting point side
Ladder hole；It is provided with column open cavity along axial direction in the cylinder of ladder hole back segment, which has the cone of a protrusion,
Bore the extension that intracorporal axially extending bore is funnel-shaped chamber bottle neck.
It is in inverse-T-shaped cylinder that wherein the mouth mold, which is a shape, interior to be provided with "T"-shaped ladder hole along axial direction, and by boring
Degree bearing and nut activity are fixed in the column open cavity of handpiece body.
Wherein the mouth mold drive sprocket is connected by chain with drive sprocket, shaft coupling and motor.
Wherein the plug is a smooth surface stick, sub-support activity fixed section and active section, and support activity fixed section is by being located at
The bearing movable supporting shunted in the stepped cavity that bracket and lower machine neck are formed is fixed, and active section cantilever is made to be located at handpiece body funnel
In nozzle and the ladder hole of mouth mold, active section is made of conical section and flat segments, and the length ratio of conical section and flat segments is at least
11:1, and fixed section and active section joint are provided with an annular groove；An axial venthole is also provided with along plug.
Wherein the plug driving mechanism is made of plug drive rod, gear with curved teeth and bearing, and plug drive rod sequentially passes through
The ladder hole and through-hole outer cover plate for shunting cylinder below the frame body of bracket middle section, by the bearing activity branch being located in the ladder hole
Support is fixed, and is located at upper end in the cavity for shunting bracket middle section, and lower end is located below outside cylinder, with plug drive chain
Wheel is connected；Gear with curved teeth is two, and one is mounted on the end for shunting the installation fixed section of the plug in the cavity of bracket middle section,
Another engages the upper end for being mounted on and shunting plug drive rod one end in the cavity of bracket middle section.
Wherein the plug drive sprocket is connected by chain with drive sprocket, shaft coupling and motor.
Further, the melt feed-throughs and plug are on same center line.
Further, arc " recessed " the slot melt material runner is three, and feed end width is greater than discharge end width.
Since the utility model rheometer measures polyalcohol pressure or/and shear rheology behavior at the same time, can also pass through
The equipment such as cooler bin, dragger and coiler are set after rotary extrusion rheology head, extrudate is made to be shaped to polymer micro-pipe,
It can kill two birds with one stone in this way.
Polyalcohol pressure or/and shear rheology behavior are specifically measured using the utility model, and steps are as follows:
1) the above-mentioned rotary extrusion processing rheometer setting that can measure polyalcohol pressure or/and shear rheology simultaneously is collected
Pressure sensor and torsional forces sensor transmissions are to pressure power value ⊿ P, the plug torque force value M2, mouth mold torque for controlling measuring mechanism
Force value M1；
2) axial strain rate γ is calculated by following equationrz:
Axial strain power σ is calculated by following equationrz:
Hoop strain rate γ is calculated by following equationrθ:
Hoop strain power σ is calculated by following equationγθ:
Wherein,
Ro: molding runners outer radius；
Ri: molding runners inside radius,
R: the radius value of any position in molding runners (between Ri and Ro)；
L: molding runners length；
Q: squeezing out flow, by the quality determination for measuring certain time extruded material；
Ω 1: mouth mold revolving speed；
Ω 2: plug revolving speed；
3) assume that power rate index is 1, obtain closing adaptability to changes σ, shear rate γ and shear viscosity η
It is the rheological parameter under the compound position of complex pressure/shearing that last gained, which closes adaptability to changes σ and closes shear rate γ,
It can be that rheological behaviour and structure formation of the polymer under complex pressure or/and shearing compound force field provide research base with differentiation
Plinth and actual processing guidance.
The utility model compared with prior art, has the advantages that
1. making to polymerize since rheometer provided by the utility model can apply pressure and/or drag to polymer melt
Object can generate the three-dimensional compound flowing of pressure/towing, and also can adjust makes it generate the flowing of single pressure or towing, thus
Different rheological behaviours of the polymer under the different field of forces such as pressure flow, drag flow, the compound flowing of pressure/towing can be measured,
Polymer Melts in Complex is processed in the breakthrough that can not only realize flow measurement under the conditions of complicated processing of Polymer Processing rheometry
With direct effective theory directive significance, support can also be provided for the single rheology behavioral study of polymer.
2. the molding runners as designed by rheometer provided by the utility model are closed system, thus even in core
Stick and mouth mold, which rotate in same direction, to be formed by under higher rotation speed, and existing plate rheometer will not occur and polymerize at a high rotational speed
The problem of edge break occurs for object melt, influences test result.
3. the buffering splicing section design due to rheometer provided by the utility model in plug has annular groove or screw thread etc.
Structure, thus the shearing force to melt material can be improved, increase the test scope of shear rate.
4. since rheometer provided by the utility model is directed to the right-angle type feeding manner of existing rotary extrusion processing unit (plant),
Easily polymer tube wall is made the problem of became uneven occur, feed system is designed to through type form, is made through melt extruder
The material of extrusion directly can enter rotary extrusion rheology head along logistics runner, thus obtain the even tube wall degree of final finished
To promotion.
5. due to the utility model newly-designed rheometer can on-line measurement polymer melt in rotary extrusion process
In pressure and the key parameters such as torque on the basis of, also there is the formula voluntarily derived, thus it is molten to directly obtain polymer
Rheological behaviour of body during rotary extrusion, realizes from process equipment to process equipment and the important breakthrough of scientific instrument.
6. can also prepare high-performance polymer since the utility model is while realizing to Polymer Processing flow measurement
Microtubular, thus increase the practicability of rheometer.
Detailed description of the invention
Fig. 1 is the rotary extrusion processing provided by the utility model that can measure polyalcohol pressure or/and shear rheology simultaneously
The structure connection relationship diagram of rheometer.
Fig. 2 is the rotary extrusion processing provided by the utility model that can measure polyalcohol pressure or/and shear rheology simultaneously
The schematic cross-sectional view of rotary extrusion rheology head in rheometer.
Fig. 3 is the rotary extrusion processing provided by the utility model that can measure polyalcohol pressure or/and shear rheology simultaneously
The schematic cross-sectional view of bracket is shunted in rheometer rotary extrusion rheology head.
Fig. 4 is the left view structural representation of Fig. 3.
Fig. 5 is the rotary extrusion processing provided by the utility model that can measure polyalcohol pressure or/and shear rheology simultaneously
The schematic cross-sectional view of plug in rheometer rotary extrusion rheology head.
Specific embodiment
Embodiment is provided with reference to the accompanying drawing and the utility model is described in further detail.It is worth noting that provide
Embodiment should not be understood as the limitation to scope of protection of the utility model, and person skilled in art is according to the present utility model interior
Appearance still should belong to scope of protection of the utility model to some nonessential modifications and adaptations that the utility model is made.
Embodiment 1
The present embodiment is the implementation that can measure the rotary extrusion processing rheometer of polyalcohol pressure or/and shear rheology simultaneously
Example.
The polymer rotary extrusion processing rheometer with flow measurement function that the present embodiment provides includes being sequentially connected
Melting extrusion mechanism, rotary extrusion rheology head and sensor, drive sprocket, shaft coupling, motor, control mechanism for monitoring,
The equipment such as cooler bin, dragger and coiler, as shown in Figure 1.Wherein rotary extrusion rheology head is by connecting pipe 1, shunts
Bracket 3, lower machine neck 12, nose piece 15, mouth mold 17, mouth mold drive sprocket 20, plug 21 and plug driving mechanism are constituted, connecting tube
Part 1 shunts bracket 3 and nose piece 15 and is successively linked together by connector such as bolt 11 uniformly distributed thereon with being threadedly engaged.Under
Machine neck 12 is located in the cavity shunted between bracket 3 and nose piece 15, and 17 activity of mouth mold is fixed on the cavity of 15 rear end of handpiece body
It is interior, and be connected with the mouth mold drive sprocket 20 outside 15 end face of handpiece body, plug 21 is located at lower machine neck 12, handpiece body 15 and mouth mold 17
In internal channel, one end is connected with the plug driving mechanism being located in shunting bracket 3, and sensor is divided into pressure sensor and torque
Sensor, pressure sensor are placed in the ladder hole 16 of 15 side of handpiece body, torque sensor be mounted on drive sprocket and
On shaft coupling between motor, the two is connected with control mechanism for monitoring, and the equipment such as cooler bin, dragger and coiler successively connect
It connects and is located at outside mouth mold 17.
The cross sectional shape of the connecting pipe 1 is in " convex " shape, and left and right ends is ring flange, and and melt extruder
Melt feed-throughs 2 are provided in the middle part of the connected left disk of structure, the melt feed-throughs 2 and plug 21 are located on same center line,
2 second half section of feed-throughs is in horn mouth open cavity, to match with the tapered protrusion for shunting 3 one end of bracket, as shown in Figure 2.
The 3 frame body leading portion of shunting bracket is back taper protrusion, is had on the frame body of middle section one along the bottom edge of back taper protrusion
What is extended outward to form matches the ring flange of connection with connecting pipe and nose piece, one side of frame body between two ring flange disks to
Under extend to form a cylinder 4, back segment frame body outer diameter is less than middle section frame body outer diameter and the ladder hole internal diameter with lower machine throat end
Match.Back taper convex outer surface is provided with arc " recessed " slot melt material runner 5, the present embodiment arc " recessed " slot melt material runner
It is three, which is extended down to always middle section frame body end, and feed end width is greater than discharge end width.Every two arc
It is separated between shape " recessed " slot melt material runner 5 by the muscle 6 of a protrusion.In shunting 3 frame body of bracket, back segment water
It is opened flat a ladder blind hole 7, the chamber of cecum side is as the Transmission Room where the gear with curved teeth 25 engaged in plug driving mechanism.
It is provided with ladder hole 8 in the cylinder 4 extended to form below the frame body of middle section, the ladder hole 8 phase vertical with the cecum of ladder blind hole 7
Logical, other end end is sealed by a cover board 9 with holes.In addition it is logical one to be also provided on the middle section frame body of muscle for being located at upside protrusion
Stomata 10, the venthole 10 are also communicated with the cecum of ladder blind hole 7, so that the gas with pressure being passed through is able to enter plug 21
Middle opened axial venthole 23 reaches in the micro-pipe at 17 end of outlet mold, on the one hand can play freshly extruded tubing cooling make
With on the other hand can preventing freshly extruded tubing from melt occurs and collapse.As in Figure 2-4.
The lower machine neck 12 is outer to be inside provided with ladder hole shaped like a tubular cone, shunts the back segment frame body of bracket and is somebody's turn to do
After ladder hole matching connects, a pair of bearings 13 and partition ring 14 are inside laid, sees Fig. 2.
The handpiece body 15 is a cylinder, is ring flange with one end end that is connected of bracket 3 is shunted, before cylinder, middle section
Interior be provided with along axial direction is cylindrical in shape funnel shaped open cavity, and the matching of lower machine neck 12 is placed in the cavity, and lower machine neck 12 with should
There are gap between cavity inner wall, using as the melt material runner being connected on after shunting 3 frame body of bracket.In funnel cavity bottle neck
A ladder hole 16 is vertically provided on the cylinder of starting point side, it is interior to dispose pressure sensor；The column of 16 back segment of ladder hole
It is provided with column open cavity along axial direction in body, which has the cone of a protrusion, and boring intracorporal axially extending bore is infundibulate
The extension of cavity bottle neck.The taper of the inner wall of funnel-shaped chamber bottle neck and its extension and 21 active section of plug passed through
Front half section matching, and between there are gap, using as being connected on the melt material runner after lower machine neck 12.See Fig. 2.
The mouth mold 17 is that a shape is in inverse-T-shaped cylinder, interior to be provided with "T"-shaped ladder hole along axial direction, and by taper
Bearing 18 and 19 activity of nut are fixed in the column open cavity of handpiece body 15, and the taper of mouth mold 17 and 21 active section of plug
Second half section and flat segments matching, and between there are gap, using as being connected on the melt material runner after handpiece body 15.See Fig. 2.
The mouth mold drive sprocket 20 is connected by chain with drive sprocket, shaft coupling and motor.
The plug 21 is a smooth surface stick, sub-support activity fixed section and active section, and support activity fixed section is divided by being located at
13 movable supporting of bearing in stepped cavity that stream bracket 3 and lower machine neck 12 are formed is fixed, and active section cantilever is made to be located at handpiece body
In 15 funnel nozzles and the ladder hole of mouth mold 17, active section is made of conical section and flat segments, the length of conical section and flat segments
Than being at least 11:1, and the present embodiment support activity fixed section and active section joint are provided with an annular groove 22.In addition, along core
Stick 21 is also provided with an axial venthole 23.See Fig. 2 and Fig. 5.
The plug driving mechanism is made of plug drive rod 24, gear with curved teeth 25 and bearing 26, and plug drive rod 24 is successively
Across the ladder hole 8 and through-hole outer cover plate 9 for shunting cylinder 4 below 3 middle section frame body of bracket, by the axis being located in the ladder hole
It holds 26 movable supportings to fix, is located at upper end in the cecum cavity for shunting 3 middle section of bracket, and lower end is located below cylinder 4
Outside, to be connected with plug drive sprocket 27；Gear with curved teeth 25 is two, and one is mounted in shunting 3 middle section cavity of bracket
On the end of 21 support activity fixed section of plug, another engages the core for being mounted on and shunting in 3 middle section cavity of bracket
The upper end of 24 one end of stick drive rod.See Fig. 2.
The plug drive sprocket is connected by chain with drive sprocket, shaft coupling and motor.See Fig. 2.
Embodiment 2
The present embodiment is specific measurement polyalcohol pressure/shear rheology behavior embodiment.
The polymer that the present embodiment uses is atactic copolymerized polypropene (PPR), trade mark RP200, and manufacturer is South Korea three
Star chemical industry squeezes out the relevant parameter of processing rheometer: Ro=0.003m, Ri=0.002m, r=Ro=0.003m, L=
0.074m；The condition that set and test obtains are as follows: 230 DEG C of temperature；Pressure value Δ P=1.05MPa；Mouth mold revolving speed Ω 1=
10rpm=1.04rad/s；Plug revolving speed Ω 2=0；When Q=1.66*10-8m3/s, it is calculated by the following formula to obtain:
Axial shearing stress:
Axial shear rate:
Circumferential shear stress:
Circumferential shear rate:
Close shear stress:
Close shear rate:
Melt viscosity:
The PPR micro-pipe outer diameter about 3mm prepared under the conditions of only pressure flow, wall thickness about 0.5mm, circumferential torsional strength are
16MPa, torsion modulus 383.5MPa.
Embodiment 3
The present embodiment is specific measurement polyalcohol pressure/shear rheology behavior embodiment.
The polymer that the present embodiment uses is atactic copolymerized polypropene (PPR), trade mark RP200, and manufacturer is South Korea three
Star chemical industry squeezes out the relevant parameter of processing rheometer: Ro=0.003m, Ri=0.002m, r=Ro=0.003m, L=
0.074m；The condition that set and test obtains are as follows: 230 DEG C of temperature；Pressure value Δ P=3.78MPa；Mouth mold is revolved in the same direction with plug
Turn, plug revolving speed Ω1=40rpm=4.18rad/s, plug torque are M1=0.14NM；Mouth mold revolving speed Ω2=40rpm=
4.18rad/s, mouth mold torque M2=0.12NM；Q=2.18*10-8m3When/s, it is calculated by the following formula to obtain:
Axial shearing stress:
Axial shear rate:
Circumferential shear stress:
Circumferential shear rate:
Close shear stress:
Close shear rate:
Melt viscosity:
PPR micro-pipe outer diameter about 3mm, the wall thickness about 0.5mm prepared under the conditions of pressure/shearing compound flowing, circumferential direction torsion
Intensity is 18.5MPa, torsion modulus 457.8MPa.
Claims (9)
1. a kind of rotary extrusion processing rheometer that can measure polyalcohol pressure or/and shear rheology simultaneously, the processing rheometer
Including sequentially connected melting extrusion mechanism, rotary extrusion rheology head and sensor, drive sprocket, shaft coupling, motor and
Control mechanism for monitoring, it is characterised in that the rotary extrusion rheology head is by connecting pipe (1), shunts bracket (3), lower machine neck
(12), handpiece body (15), mouth mold (17), mouth mold drive sprocket (20), plug (21) and plug driving mechanism are constituted, connecting pipe
(1), bracket (3) and handpiece body (15) is shunted successively to be linked together by connector, lower machine neck (12) be located at shunting bracket (3) and
In cavity between handpiece body (15), mouth mold (17) activity is fixed in the cavity of handpiece body (15) rear end, and and handpiece body
(15) the mouth mold drive sprocket (20) outside end face is connected, and plug (21) is located at lower machine neck (12), handpiece body (15) and mouth mold (17)
In internal channel, one end is connected with the plug driving mechanism being located in shunting bracket (3), and sensor is divided into pressure sensor and torsion
Square sensor, pressure sensor are placed in second ladder hole (16) of handpiece body (15) side, and torque sensor is mounted on
On shaft coupling between drive sprocket and motor, the two is connected with control mechanism for monitoring.
2. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that for the cross sectional shape of the connecting pipe (1) in " convex " shape is fallen, left and right ends is ring flange, and with it is molten
Melt and be provided with melt feed-throughs (2) in the middle part of the connected left disk of extrusion mechanism, feed-throughs (2) second half section is open in horn mouth
Chamber, to be matched with the back taper protrusion for shunting bracket (3) one end.
3. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that shunting bracket (3) the frame body leading portion is back taper protrusion, is had on the frame body of middle section one along back taper protrusion
The ring flange that connection is matched with connecting pipe and nose piece that extends outward to form of bottom edge, the frame body between two ring flange disks
Side is downwardly extending a cylinder (4), and back segment frame body outer diameter is less than middle section frame body outer diameter and the rank with lower machine neck (12) front end
Terraced through-hole internal diameter matching；Back taper convex outer surface is provided with arc " recessed " slot melt material runner (5), and every two arcs " recessed " slot is molten
There is the muscle (6) of a protrusion between body material flow path (5)；Shunt bracket (3) frame body in, back segment be horizontally opened with a ladder blind hole
(7), it shunts in the cylinder (4) below the middle section frame body of bracket (3) and is provided with the first ladder hole (8), first ladder hole (8)
Vertical with the cecum of ladder blind hole (7) to communicate, other end end is sealed by a cover board (9) with holes；It is being located at upside protrusion
The first venthole (10) are also provided on the middle section frame body of muscle (6), first venthole (10) the also cecum phase with ladder blind hole (7)
It is logical.
4. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that the lower machine neck (12) is inside provided with ladder hole outside shaped like a tubular cone.
5. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that the handpiece body (15) is a cylinder, is ring flange, column with one end end that bracket (3) are connected is shunted
It before body, is provided in middle section along axial direction and is cylindrical in shape funnel shaped open cavity, on the cylinder of funnel cavity bottle neck starting point side
Vertically it is provided with the second ladder hole (16)；It is provided with column open cavity along axial direction in the cylinder of the second ladder hole (16) back segment,
The cavity bottom has the cone of a protrusion, bores the extension that intracorporal axially extending bore is funnel-shaped chamber bottle neck.
6. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that the mouth mold (17) is that a shape is in inverse-T-shaped cylinder, interior to be provided with "T"-shaped ladder hole along axial direction, and
It is fixed in the column open cavity of handpiece body by second bearing (18) and nut (19) activity.
7. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that the plug (21) be a smooth surface stick, sub-support activity fixed section and active section, support activity fixed section by
First bearing (13) movable supporting in the stepped cavity for shunting bracket (3) and the formation of lower machine neck (12) is fixed, and work is made
The second ladder hole (16) that section cantilever is located at handpiece body (15) funnel nozzle and mouth mold (17) is interior, and active section is by conical section and straight
Section is constituted, and the length of conical section and flat segments is than being at least 11:1, and support activity fixed section and active section joint are provided with one
Annular groove (22)；Axial second venthole (23) is also provided with along plug (21).
8. the rotary extrusion processing rheology according to claim 1 that polyalcohol pressure or/and shear rheology can be measured simultaneously
Instrument, it is characterised in that the plug driving mechanism is made of plug drive rod (24), gear with curved teeth (25) and 3rd bearing (26), core
Stick drive rod (24) sequentially passes through the ladder hole and through-hole outer cover plate (9) for shunting cylinder (4) below the frame body of bracket (3) middle section,
It is fixed by 3rd bearing (26) movable supporting being located in the ladder hole, upper end is made to be located at the sky for shunting bracket (3) middle section
It is intracavitary, and lower end is located below cylinder (4) outside, to be connected with plug drive sprocket (27)；Gear with curved teeth (25) is two, one
It is mounted on the end for shunting plug (21) support activity fixed section in the cavity of bracket (3) middle section, another is nibbled with it
Conjunction is mounted on the upper end for shunting plug drive rod (24) one end in the cavity of bracket (3) middle section.
9. the rotation of polyalcohol pressure or/and shear rheology can be measured described in any one of -8 simultaneously according to claim 1
Squeeze out processing rheometer, it is characterised in that the rheometer also after rotary extrusion rheology head be provided with cooler bin, dragger and
Coiler makes extrudate may be molded to polymer micro-pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709828A (en) * | 2018-03-30 | 2018-10-26 | 四川大学 | The rotary extrusion processing rheometer and flow measurement method of polyalcohol pressure/shear rheology can be measured simultaneously |
| CN114585493A (en) * | 2019-10-15 | 2022-06-03 | 株式会社日本制钢所 | Forming machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709828A (en) * | 2018-03-30 | 2018-10-26 | 四川大学 | The rotary extrusion processing rheometer and flow measurement method of polyalcohol pressure/shear rheology can be measured simultaneously |
| WO2019184403A1 (en) * | 2018-03-30 | 2019-10-03 | 四川大学 | Rotating extrusion rheometer and rheology measurement method capable of simultaneously measuring polymer pressure/shearing rheology |
| CN108709828B (en) * | 2018-03-30 | 2023-09-29 | 四川大学 | Rotary extrusion processing rheometer capable of simultaneously measuring polymer pressure and/or shear rheology and rheometry method |
| CN114585493A (en) * | 2019-10-15 | 2022-06-03 | 株式会社日本制钢所 | Forming machine |
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