CN1194218C - Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system - Google Patents
Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system Download PDFInfo
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- CN1194218C CN1194218C CNB031296157A CN03129615A CN1194218C CN 1194218 C CN1194218 C CN 1194218C CN B031296157 A CNB031296157 A CN B031296157A CN 03129615 A CN03129615 A CN 03129615A CN 1194218 C CN1194218 C CN 1194218C
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- mould
- ultrasonic wave
- time observation
- temperature
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- 238000002356 laser light scattering Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 239000011229 interlayer Substances 0.000 claims description 7
- 238000001374 small-angle light scattering Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 229920002521 macromolecule Polymers 0.000 abstract 1
- 230000000877 morphologic effect Effects 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a laser scattering real-time observation system with a seam current and a small angle in an ultrasonic wave vibration field, which comprises a mould of which the outside is wound with a heating coil, the lower part is provided with a seam flow passage, and the upper part is provided with a material containing cavity. The outer side surface of the bottom of the material containing cavity is provided with a temperature sensor, a displacement sensor is arranged on a plunger rod in the containing cavity, the upper part and the lower part which are vertical to the long edge of the seam flow passage are respectively connected with an ultrasonic wave generator and a laser device, a photoelectric detector is connected with an amplifier, the heating coil and the temperature sensor are connected with a temperature control system, and the amplifier, the temperature control system, and the displacement sensor are respectively connected with a microcomputer processing system. Compared with a single external field, the present invention can generate the cooperated effect with the combination of various external fields, and can effectively accelerate the relaxation process of a macromolecule material structure, namely that the present invention is beneficial to the stabilization of a material structure and performance. The real-time observation of a polymer morphological structure can be achieved on the foundation that a flat plate current model is simulated, and then the relation between a polymer condensed-state structure and the external field is established.
Description
Technical field
The present invention relates to by means of the chemistry of measuring material or physical property is tested or the system of analysis of material, relate in particular to a kind of ultrasonic vibration field slit stream low angle laser light scattering real-time monitored system.
Background technology
At this a kind of emerging forming polymer job operation of Melt Vibrating Molding Technology, Chinese scholars has been carried out a large amount of intensive research work, and has obtained many pleasurable achievements in recent years.In order to study the influence of oscillator field to polymer morphology, some patented technologies are added in low-frequency mechanical vibrations on the depression bar as the vibration capillary rheometer, pass to melt by depression bar, study the influence of vibration to the melt rheological property energy.This class patent can reflect the relation of vibration and melt viscosity, but can not reflect the influence of vibration to the melt morphosis.And there is decay in the vibration that is added in the depression bar direction in this class patent, and the long more decay of depression bar is serious more, and quality of fit is high more between depression bar and barrel wall, and loss is also big more.As carrying out other sign to the melt of extruding, need sample preparation again in addition, this makes the thermal history of melt change, and causes measured result not have authenticity and real-time.
Summary of the invention
The object of the present invention is to provide a kind of ultrasonic vibration field slit stream low angle laser light scattering real-time monitored system, on slit stream extrusion device basis, add the ultrasonic vibration field, and link to each other with the low angle laser light scattering device, realize the Real Time Observation of macromolecular material structural change under the vibration condition.
In order to achieve the above object, the technical solution used in the present invention is as follows:
It comprises: be around with the heater coil bottom and have slit conduit, top has the mould of dress material cavity volume, mould is by left mould, interlayer and right mould assemble, the thickness of interlayer and the consistency of thickness of slit conduit, dress material cavity volume bottom outside face is equipped with temperature sensor, in the dress material cavity volume plunger rod is housed, the pressurizing control system that is equipped with displacement transducer is equipped with in the plunger rod top, with the long limit of mould slit conduit perpendicular on, following position, ultrasonic generator and laser instrument are housed respectively, laser instrument is corresponding with photodetector, photodetector connects amplifier, heater coil and temperature sensor connect temperature-controlling system, amplifier, temperature-controlling system, displacement transducer is connected with microprocessor system respectively.
Utilize ultrasound wave to realize the dither of polymer melt, consider that simultaneously existing research about oscillator field focuses mostly in round runner situation, so the present invention adopts slit conduit to simulate dull and stereotyped flow model in the hope of exploring a kind of new field of force mode and making every effort to realize and the similar macromolecular material forming processing technology of slit stream.For variation effective, the Real Time Observation polymer morphology, the low angle laser light scattering device of ultrasonic vibration slit extrusion device with the advanced person is connected, by measuring intensity variations, reflect the variation of polymer architecture.
The present invention compares with background technology, the useful effect that has is: it is compared with single outfield, the combination results in multiple outfield (temperature field, the field of force, ultrasonic wave field etc.) is worked in coordination with field effect, can effectively quicken the macromolecular material STRUCTURAL RELAXATION, promptly helps material structure and performance and reaches stable.On the basis of the dull and stereotyped flow model of simulation, realized the Real Time Observation of polymer morphology structure, set up the relation between polymkeric substance condensed state structure and the outfield.Simultaneously, the dither field is that the useful of the research contents in macromolecular condensed state physics and related discipline field replenished, and has enriched the Polymer Processing theory, and has established theoretical foundation for the formation of new method for processing forming.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention;
Fig. 2 is the vertical view of Fig. 1 of the present invention.
Embodiment
As Fig. 1, shown in Figure 2, it comprises: be around with the heater coil bottom and have slit conduit 3, top has the mould 6 of dress material cavity volume 2, mould 6 is by left mould 7, interlayer 8 and right mould 9 assemble, the consistency of thickness of the thickness of interlayer 8 and slit conduit 3, dress material cavity volume 2 bottom outside faces are equipped with temperature sensor 5, in the dress material cavity volume 2 plunger rod 1 is housed, the pressurizing control system A that is equipped with displacement transducer 4 is equipped with in plunger rod 1 top, with the long limits of mould 6 slit conduits 3 perpendicular on, following position, ultrasonic generator B and laser instrument C are housed respectively, laser instrument C is corresponding with photodetector D, photodetector D meets amplifier E, heater coil and temperature sensor meet temperature-controlling system F, amplifier E, temperature-controlling system F, displacement transducer 4 is connected with microprocessor system G respectively.
The course of work of the present invention is as follows:
A is a pressurizing control system, is connected with plunger rod 1, and when pressurization, plunger rod 1 moves down, and its decline displacement can be measured by the displacement transducer 4 that is connected on the pressurizing control system A.F is a temperature control system, is connected with temperature sensor 5, can heat up, the control of cooling or constant temperature.B is a ultrasonic generator, is made up of ultrasonic generator and luffing bar, closely is connected by screw between luffing bar and mould.C is a laser instrument, and its emitted laser is radiated on the polymer melt through quartzy form, is received by photodetector D through the scattered light of polymer melt, and signal sends microprocessor system G to and carries out data analysis after amplifier E amplifies.The displacement signal measured of the temperature signal measured of temperature control system F and displacement transducer 4 all sends microprocessor system G to and analyzes in addition.
Wherein pressurizing control system A adopts the lever pressurization, slit conduit is to be assembled by three parts, vertical view as shown in Figure 2, just the characteristics of this assembling if with intermediate course with the alternative scattering experiment that just can carry out the different-thickness sample of the interlayer of other thickness, can assemble owing to mould in addition, therefore also the batten of available compression molding experimentizes, even can carry out the experiment of film.The ultrasonic generator frequency is 20KHz, and power is that 100W is adjustable, also can change the ultrasonic generator of different frequency and power as required.Temperature control system F mainly is made up of intelligent temperature control instrument and temperature sensor and high power heater coil, measures temperature value and can send the microcomputer recording processing to.The laser that laser instrument C produces impinges upon on the sample by quartzy form, when the sample phase morphology changes, the scattered light light intensity can change, this variation can be received by photodetector D, after amplifier E amplifies, send microprocessor system G to and handle, therefore can realize the Real Time Observation of sample form.The displacement signal of displacement transducer reception also can send microprocessor system G in addition, may obtain to vibrate the influence to melt flow, thereby obtains the information about viscosity.
During experiment, by temperature control system F design temperature program, plunger rod 1 is taken out after arriving assigned temperature, put into material, again plunger rod 1 is put back to, leave standstill a few minutes to treat the material fusion according to requirement of experiment.Open laser instrument C, regulate light path.Open microprocessor system G.With the fused materials compacting, pressurizing control system A is connected with plunger rod 1 earlier, the pressure size is controlled by pressurizing control system A again.Pressurization back material is extruded by slit conduit 3, changes evenly as the material diffuse light is strong, and changing then as the material phase, the scattered light light intensity changes.Displacement, temperature and light intensity value over time can be by microprocessor system G recording processing.In observing the experiment of ultrasound wave, can set at experimental arrangement and open ultrasonic generator constantly the influence of melt form.This experiment can also compare experiment with blank assay.
Claims (1)
1. a ultrasonic vibration field slit flows low angle laser light scattering real-time monitored system, it is characterized in that it comprises: be around with the heater coil bottom and have slit conduit (3), top has the mould (6) of dress material cavity volume (2), mould (6) is by left mould (7), interlayer (8) and right mould (9) assemble, the consistency of thickness of the thickness of interlayer (8) and slit conduit (3), dress material cavity volume (2) bottom outside face is equipped with temperature sensor (5), in the dress material cavity volume (2) plunger rod (1) is housed, the pressurizing control system (A) that is equipped with displacement transducer (4) is equipped with in plunger rod (1) top, with the long limit of mould (6) slit conduit (3) perpendicular on, following position, ultrasonic generator (B) and laser instrument (C) are housed respectively, laser instrument (C) is corresponding with photodetector (D), photodetector (D) connects amplifier (E), heater coil and temperature sensor (5) connect temperature-controlling system (F), amplifier (E), temperature-controlling system (F), displacement transducer (4) is connected with microprocessor system (G) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031296157A CN1194218C (en) | 2003-06-28 | 2003-06-28 | Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031296157A CN1194218C (en) | 2003-06-28 | 2003-06-28 | Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1475793A CN1475793A (en) | 2004-02-18 |
| CN1194218C true CN1194218C (en) | 2005-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031296157A Expired - Fee Related CN1194218C (en) | 2003-06-28 | 2003-06-28 | Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system |
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| CN (1) | CN1194218C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261266B (en) * | 2008-04-11 | 2011-05-11 | 中南大学 | Test device for accomplishing polymer melting plasticization using superaudio vibration |
| CN101788474B (en) * | 2010-02-10 | 2011-11-23 | 哈尔滨工业大学 | Method for quantitatively testing threshold value of photo-induced light scattering exposure energy density of photorefractive materials |
| CN103163066B (en) * | 2013-02-19 | 2015-09-30 | 中山大学 | A kind of liquid machine loss analysis instrument |
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2003
- 2003-06-28 CN CNB031296157A patent/CN1194218C/en not_active Expired - Fee Related
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| CN1475793A (en) | 2004-02-18 |
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