CN204439494U - A kind of device of on-line measurement polymer melt rheological parameter - Google Patents
A kind of device of on-line measurement polymer melt rheological parameter Download PDFInfo
- Publication number
- CN204439494U CN204439494U CN201520009707.9U CN201520009707U CN204439494U CN 204439494 U CN204439494 U CN 204439494U CN 201520009707 U CN201520009707 U CN 201520009707U CN 204439494 U CN204439494 U CN 204439494U
- Authority
- CN
- China
- Prior art keywords
- storage compartment
- piston
- melt
- polymer melt
- extruder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of device of on-line measurement polymer melt rheological parameter, this device comprises temperature control equipment, has a storage compartment in it; The top of this storage compartment is provided with piston, and the below of storage compartment is disposed with multiple spaced capillary die from top to bottom; This storage compartment is by the fusion plastification section of Melt Pump connecting extruder, and polymer melt is incorporated in storage compartment from extruder fusion plastification section by Melt Pump, by the extruding of piston, the polymer melt in storage compartment is extruded successively from multiple capillary die.This device synchronously can carry out Bagley and Rabinowitsch and correct, the true shear viscosity of real-time measurement material, and Cogswell method can be utilized to measure the instantaneous stretching viscosity of melt, in addition, the capillary die by changing different size studies the wall slip phenomenon of melt.Measure relative to conventional offline, it truly can reflect the rheological behaviour of material in process equipment.
Description
Technical field
The utility model relates to polymer material molding manufacture field, particularly relates to a kind of device of on-line measurement polymer melt rheological parameter.
Background technology
The rheological property of polymkeric substance is the important technology index detecting end product quality, by carrying out scientific measurement to polymeric material rheological parameter, contributing to the rheological behaviour understanding polymkeric substance, thus obtaining excellent extrudate performance.Capillary rheometer is the instrument of at present the most ripe, the most widely used characterize polymers rheological property of development, and it can not only measure the shear viscosity of polymkeric substance, can also the extrusion of characterize polymers, and then the viscoelasticity behavior of Study Polymer Melts.But, although traditional off-line flow graph can measure various rheological data and provide necessary theoretical foundation to Polymer Processing, but its measurement result and actual processing environment still difference to some extent, actual process is instructed to there is larger otherness with it, therefore, the manufacturing of Real-Time Monitoring polymkeric substance is subject to people and payes attention to more and more widely, wherein, weighs the instrument of flow properties of polymer melts in process of manufacture at line rheometer and has wide prospect as a kind of.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides a kind of device of on-line measurement polymer melt rheological parameter; True reflection melt viscosity in production line process equipment can be directly used in and, with the Changing Pattern of shear rate, overcome the problem that in prior art, measurement result and actual processing environment bring because there is difference.
The utility model is achieved through the following technical solutions:
A device for on-line measurement polymer melt rheological parameter, this device comprises temperature control equipment 10, has a storage compartment 8 in the housing of temperature control equipment 10; The top of this storage compartment 8 is for being provided with the piston section of piston 9, and the below of storage compartment 8 is polymer melt extruding zone, is disposed with multiple spaced capillary die in extruding zone from top to bottom; Pressure transducer 4 is separately installed with in the porch of each capillary die 6; The fixed block 5 for fixed capillary mouth mould 6 is provided with in the end of temperature control equipment 10.
This storage compartment 8 is by the fusion plastification section of Melt Pump 3 connecting extruder, polymer melt is incorporated in storage compartment 8 from extruder fusion plastification section by Melt Pump 3, by the extruding of piston 9, the polymer melt in storage compartment 8 is extruded successively from multiple capillary die 6.
Described multiple capillary die 6 is 3 capillary dies that diameter is identical, major diameter is different.
The top body of rod of described piston 9 is ball screw 12, and the end of the top body of rod connects servomotor 14 by gear 15,13, when servomotor 14 rotates, upwards or downwards runs at the effect lower piston 9 of ball screw 12.The displacement speed sensor 11 for detecting piston 9 downstream rate is provided with at the hypomere of ball screw 12.
Temperature control equipment 10 housing corresponding to storage compartment 8 is provided with temperature sensor 7.
The housing of extruder is provided with fusion plastification section temperature sensor 1.
Extruder fusion plastification section connects Melt Pump 3 by pipeline, and this pipeline is provided with operation valve 2.
Adopt the method for said apparatus on-line measurement polymer melt rheological parameter as:
Step one, open temp control device 10, until the reading of temperature sensor 7 is identical with the reading of extruder fusion plastification section temperature sensor 1;
Step 2, opening controlling valve 2, the polymer melt in extruder fusion plastification section is introduced in storage compartment 8 by Melt Pump 3;
Step 3, unlatching servomotor 14, control piston 9 downstream rate, the melt in storage compartment 8 is extruded from capillary die 6 by piston 9;
Polymer-melt temperature data in the polymer-melt temperature data of step 4, the polymer melt pressure data of porch of each capillary die 6 utilizing computing machine to be collected by data collecting card, piston displacement speed data, extruder fusion plastification section and storage compartment 8 carry out processing and calculating, carry out Bagley and Rabinowitsch to correct simultaneously, obtain the rheological property parameter of polymer melt;
Step 5, database in the rheological property parameter of measurement and extruder to be contrasted, then feed back in extruder control system, carry out the adjustment of technological parameter.
In described step 3, control piston 9 downstream rate, measures piston 9 speed by displacement speed sensor 11, thus obtains the shear rate calculating capillary die 6 tube wall place, measured the Pressure Drop at capillary die two ends by pressure transducer 4, thus calculate the shear stress at capillary wall place.
The utility model, relative to prior art, has following advantage and effect:
1, adopt three capillary die on-line measurements, just can carry out Bagley rectification without the need to changing capillary die, three shear viscosity values can be measured simultaneously and average as final measured value to three values, reduce the impact of test error.
2, the instantaneous stretching viscosity of Cogswell technique study polymer melt can be utilized.
3, on-line equipment and extruder form closed-loop control system, can realize Automatic Control.
4, replaceable capillary die carries out polymer melt wall slip phenomenal research.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the close-up schematic view of capillary die.
Fig. 3 is polymer melt rheological parameter measurement frame figure;
In figure: V-piston speed; △ P-Pressure Drop; L/D-length-diameter ratio;
-apparent shear rate;
-true shear rate; τ
w-true shear stress; η
w-true shear viscosity;
-rate of extension; η
e-elongational viscosity; u
s-wall slip speed.
Embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figures 1 to 3.The device of the utility model on-line measurement polymer melt rheological parameter, this device comprises temperature control equipment 10, has a storage compartment 8 in the housing of temperature control equipment 10; The top of this storage compartment 8 is for being provided with the piston section of piston 9, and the below of storage compartment 8 is polymer melt extruding zone, is disposed with multiple spaced capillary die in extruding zone from top to bottom; Pressure transducer 4 is separately installed with in the porch of each capillary die 6;
This storage compartment 8 is by the fusion plastification section of Melt Pump 3 connecting extruder, polymer melt is incorporated in storage compartment 8 from extruder fusion plastification section by Melt Pump 3, by the extruding of piston 9, the polymer melt in storage compartment 8 is extruded successively from multiple capillary die 6.
Described multiple capillary die 6 is 3 capillary dies that diameter is identical, major diameter is different.
The top body of rod of described piston 9 is ball screw 12, and the end of the top body of rod connects servomotor 14 by gear 15,13, when servomotor 14 rotates, upwards or downwards runs at the effect lower piston 9 of ball screw 12.
The displacement speed sensor 11 for detecting piston 9 downstream rate is provided with at the hypomere of ball screw 12.
The fixed block 5 for fixed capillary mouth mould 6 is provided with in the end of temperature control equipment 10.
Temperature control equipment 10 housing corresponding to storage compartment 8 is provided with temperature sensor 7.
The housing of extruder is provided with fusion plastification section temperature sensor 1.
Extruder fusion plastification section connects Melt Pump 3 by pipeline, and this pipeline is provided with operation valve 2.
Requirement according to measuring can drive servomotor 14 carry out the decline rate of regulating piston 9 thus make shear rate within the scope required; Polymer melt flows through three capillary dies with the different length-diameter ratio of diameter simultaneously can carry out Bagley and Rabinowitsch correction fast, thus obtains the true shear viscosity of polymer melt; The instantaneous stretching viscosity of Cogswell technique study polymer melt can be utilized; Capillary die can be replaced by the mouth mould of the identical length-diameter ratio of different-diameter according to the needs of research, verify whether polymer melt extrusion exists wall slip phenomenon according to Mooney theory.
This device forms closed-loop control system by computing machine and extruder, utilize the parameters such as data collecting card collection, displacement, speed, pressure, temperature, undertaken processing by the data of computing machine to collection and calculate, database in calculated value and extruder is contrasted, then feed back in extruder control system, carry out the adjustment of correlation parameter, make process be in optimum machining state.
The method of on-line measurement polymer melt rheological parameter realizes by following steps:
Step one, open temp control device 10, until the reading of temperature sensor 7 is identical with the reading of extruder fusion plastification section temperature sensor 1;
Step 2, opening controlling valve 2, the polymer melt in extruder fusion plastification section is introduced in storage compartment 8 by Melt Pump 3;
Step 3, unlatching servomotor 14, control piston 9 downstream rate, the melt in storage compartment 8 is extruded from capillary die 6 by piston 9;
Polymer-melt temperature data in the polymer-melt temperature data of step 4, the polymer melt pressure data of porch of each capillary die 6 utilizing computing machine to be collected by data collecting card, piston displacement speed data, extruder fusion plastification section and storage compartment 8 carry out processing and calculating, carry out Bagley and Rabinowitsch to correct simultaneously, obtain the rheological property parameter of polymer melt;
Step 5, database in the rheological property parameter of measurement and extruder to be contrasted, then feed back in extruder control system, carry out the adjustment of technological parameter.
In described step 3, control piston 9 downstream rate, measures piston 9 speed by displacement speed sensor 11, thus obtains the shear rate calculating capillary die 6 tube wall place, measured the Pressure Drop at capillary die two ends by pressure transducer 4, thus calculate the shear stress at capillary wall place.
As mentioned above, just the utility model can be realized preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (8)
1. a device for on-line measurement polymer melt rheological parameter, is characterized in that: this device comprises temperature control equipment (10), has a storage compartment (8) in the housing of temperature control equipment (10); The top of this storage compartment (8) is for being provided with the piston section of piston (9), and the below of storage compartment (8) is polymer melt extruding zone, is disposed with multiple spaced capillary die in extruding zone from top to bottom; Pressure transducer (4) is separately installed with in the porch of each capillary die (6);
This storage compartment (8) is by the fusion plastification section of Melt Pump (3) connecting extruder, polymer melt is incorporated in storage compartment (8) from extruder fusion plastification section by Melt Pump (3), by the extruding of piston (9), the polymer melt in storage compartment (8) is extruded successively from multiple capillary die (6).
2. device according to claim 1, is characterized in that: described multiple capillary die (6) is 3 capillary dies that diameter is identical, major diameter is different.
3. device according to claim 1 and 2, it is characterized in that: the top body of rod of described piston (9) is ball screw (12), the end of the top body of rod connects servomotor (14) by gear (15,13), when servomotor (14) rotates, upwards or downwards run at the effect lower piston (9) of ball screw (12).
4. device according to claim 3, is characterized in that: be provided with the displacement speed sensor (11) for detecting piston (9) downstream rate at the hypomere of ball screw (12).
5. device according to claim 3, is characterized in that: be provided with the fixed block (5) for fixed capillary mouth mould (6) in the end of temperature control equipment (10).
6. device according to claim 3, is characterized in that: on temperature control equipment (10) housing corresponding to storage compartment (8), be provided with temperature sensor (7).
7. device according to claim 3, is characterized in that: on the housing of extruder, be provided with fusion plastification section temperature sensor (1).
8. device according to claim 3, is characterized in that: extruder fusion plastification section connects Melt Pump (3) by pipeline, and this pipeline is provided with operation valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009707.9U CN204439494U (en) | 2015-01-04 | 2015-01-04 | A kind of device of on-line measurement polymer melt rheological parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009707.9U CN204439494U (en) | 2015-01-04 | 2015-01-04 | A kind of device of on-line measurement polymer melt rheological parameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204439494U true CN204439494U (en) | 2015-07-01 |
Family
ID=53607347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520009707.9U Active CN204439494U (en) | 2015-01-04 | 2015-01-04 | A kind of device of on-line measurement polymer melt rheological parameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204439494U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568663A (en) * | 2015-01-04 | 2015-04-29 | 华南理工大学 | Device and method for online measuring polymer melt rheological parameter |
| CN105547920A (en) * | 2015-12-10 | 2016-05-04 | 北京理工大学 | Right-angle type mould used for torque rheological testing |
| CN106769670A (en) * | 2017-02-27 | 2017-05-31 | 华南理工大学 | A kind of disk draft flowing deformation method of testing and device |
-
2015
- 2015-01-04 CN CN201520009707.9U patent/CN204439494U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568663A (en) * | 2015-01-04 | 2015-04-29 | 华南理工大学 | Device and method for online measuring polymer melt rheological parameter |
| CN105547920A (en) * | 2015-12-10 | 2016-05-04 | 北京理工大学 | Right-angle type mould used for torque rheological testing |
| CN105547920B (en) * | 2015-12-10 | 2018-12-07 | 北京理工大学 | Torque rheology test perpendicular type mold |
| CN106769670A (en) * | 2017-02-27 | 2017-05-31 | 华南理工大学 | A kind of disk draft flowing deformation method of testing and device |
| CN106769670B (en) * | 2017-02-27 | 2023-04-07 | 华南理工大学 | Disc stretching rheological test method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104568663A (en) | Device and method for online measuring polymer melt rheological parameter | |
| CN100480673C (en) | On-line type polymer double-capillary extrusion rheometer | |
| CN106124362B (en) | A kind of ultrasound plasticizing capillary rheometer and viscosity determining procedure | |
| CN204439494U (en) | A kind of device of on-line measurement polymer melt rheological parameter | |
| US20060138690A1 (en) | Method for producing profiles made of thermoplastic material | |
| CN109501185A (en) | Injection molding process on-line monitoring method | |
| CN101430267B (en) | Test method and apparatus for rheological behavior of polymer composite material | |
| US8518309B2 (en) | Measuring device and measuring method for an injection molding machine for ascertaining a batch-specific characteristic number | |
| CN101556233B (en) | Device and method for measuring unique real viscosity of generalized Newtonian fluid | |
| CN207696840U (en) | A kind of on-line automatic control device of thermoplasticity prepreg | |
| Klozinski et al. | Comparison of off-line, on-line and in-line measuring techniques used for determining the rheological characteristics of polyethylene composites with calcium carbonate | |
| CN105675443B (en) | A kind of thin material cylinder capillary rheometer | |
| CN103822851A (en) | Double-charging barrel capillary pipe rheometer | |
| CN101898412B (en) | Extrusion control device of weight-loss type measuring control system | |
| CN100335884C (en) | Method and apparatus for rheometry, and its application to control of polymer manufactupe | |
| CN102323186B (en) | Method for measuring fluid shear stress in capillary and device | |
| CN102854093B (en) | Method for measuring rheological properties of sensitive medicine material | |
| CN107520259B (en) | A kind of cold rolling new steel grade resistance of deformation coefficient rapid correction method | |
| CN107322905A (en) | A kind of film thickness monitoring method self-positioning based on bolt | |
| CN203705302U (en) | Double-charging barrel capillary rheometer | |
| WO2022001094A1 (en) | Method for guaranteeing fiber content stability in fiber-containing product | |
| HU229126B1 (en) | Test device formesuring rheological characteristic of polymer molding | |
| WO2004005008A1 (en) | Polymer processability evaluation through on-line image processing | |
| Konaganti et al. | Transient swell of a high density polyethylene using adjustable gap slit die | |
| CN114407314B (en) | Micro injection mold with in-mold rheological online measurement function and measurement and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |