CN107632122A - A kind of slack time method of testing and its device - Google Patents
A kind of slack time method of testing and its device Download PDFInfo
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- CN107632122A CN107632122A CN201710986493.4A CN201710986493A CN107632122A CN 107632122 A CN107632122 A CN 107632122A CN 201710986493 A CN201710986493 A CN 201710986493A CN 107632122 A CN107632122 A CN 107632122A
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Abstract
The invention discloses a kind of slack time method of testing, for the slack time of test material melt or solution under the effect of different external environments, including obtains primary stress data；Obtain detected materials temperature data and extraneous fluctuation field intensity data；Rotary test bar, obtain reference test bar rotary speed, angle, time and stress data；From when record reference test bar rotates to maximum angle, material stress decays to time segment length during primary stress, obtains detected materials slack time；Present invention also offers a kind of slack time test device for realizing methods described, including drive mechanism, reference test bar, container, heater and wavegenerator, drive mechanism is rotated to an angle with certain speed driving reference test bar, it is arranged at the strain gauge collection stress data of one end, stress data and the variation relation of time under the effect of certain speed, temperature and vibration wave are obtained, produces slack time；The present invention being capable of slack time of the accurate measurement material under different external conditions.
Description
Technical field
The invention belongs to field of polymer material detection, and in particular to a kind of slack time method of testing and its device.
Background technology
The slack time of high polymer material and its solution is the key factor for influenceing its performance, and slack time is removed by material sheet
It is also closely related with ambient temperature, humidity, speed of action, additional physics field intensity and species etc. outside the performance of body determines.
Current existing rotational rheometer, the viscosity of material can be calculated by the change of testing of electric motors moment of torsion, still
The slack time of material can not accurately be obtained.Because the slack time of different materials differs very big, the relaxation of some materials
There are a few houres, several days, even decades time, and is directed to macromolecule melt and solution, and slack time of some materials may be from
The 10-10 seconds to a few minutes, so, just the sensitivity to test device and adaptability require very high, if using test electricity
The change of machine moment of torsion and the motor shaft anglec of rotation calculates slack time, then may be due to dimensional error of sapce or friction, used
The resistance errors such as property, so as to cause test data wrong, or even are tested less than data at all（Such as the feelings that slack time is short enough
Condition）.
In the prior art, the test of the slack time of high polymer material and its solution, particularly in some additional physical fields
Effect lower slack time, which tests, has certain difficulty, without a kind of equipment can accurate measurement slack time, to material
It can study, material processing plant and process technology scheme bring difficulty.
The content of the invention
In order to overcome prior art can not accurate measurement material slack time the problem of, the invention provides one kind relaxation
The method of testing of time.
Method of testing cardinal principle of the present invention is：
In certain air pressure（Height above sea level）, temperature, under humidity environment, a deformation is applied to material melt or solution（Displacement）, this
When material will produce a stress, and stress can be slowly relaxed, and when stress vanishing, the length of this period is then
Slack time of the material under the temperature, humidity environment.
In certain air pressure（Height above sea level）, temperature, under humidity environment, apply an additional physical field to material melt or solution
（Such as ultrasonic wave, electromagnetic wave or other vibration waves）, after stable, apply a deformation to material（Displacement）, at this moment material meeting
A stress is produced, then stress can slowly reply relaxation, and when stress vanishing, the length for recording this period is to be somebody's turn to do
Slack time of the material under the environment, the physics field action.
The present invention is achieved through the following technical solutions：
A kind of slack time method of testing is provided, for test material melt or solution in different external environments and physics field action
Under slack time, including：
One end is set to carry the reference test bar for the temperature stress sensor for being used to gather detected materials temperature data and stress data, will
The reference test bar is immersed in the container equipped with detected materials, and is completely attached to material, obtains primary stress data；
The reference test bar other end is provided with for driving reference test bar rotating drive mechanism；The set location in the drive mechanism
Sensor, the angle that direct collecting test bar rotates；
In the external container, the heater for controlling detected materials temperature and the wavegenerator for applying physical field are set；
Start heater and/or wavegenerator, the drive mechanism for being arranged at the reference test bar other end drives test with certain speed
Bar rotates to an angle, and is arranged at the strain gauge collection stress data of one end, obtains in certain speed, temperature and vibration
The lower stress data of ripple effect and the variation relation of time；
It is corresponding during to stress decay to primary stress when stress data numerical value corresponding when maximum angle is moved to
Period, produce slack time.
Specifically, the angular dimension is determined by being actually needed, angle can by controlling the rotation of drive shaft to realize,
It can also be realized by gathering the anglec of rotation of drive mechanism, can also be by controlling driving time to realize.
Further, the stress data passes through data acquisition control system collection analysis, the data acquisition control system
System is connected with temperature stress sensor, wavegenerator, position sensor and the driving source respectively, to be measured for collection analysis
Material temperature, stress, wave field intensity data, velocity of rotation, rotational angle and time data.
Temperature stress sensor is directly installed on reference test bar bottom, directly and material, can be very accurate, quick
Ground collects the parameters such as the temperature of material, stress, eliminates the feelings such as data inaccuracy caused by scale error, friction etc.
Condition.
Further, following steps are specifically included：
The first step, primary stress data are obtained, reference test bar of the one end with temperature stress sensor is immersed in detected materials, institute
State temperature stress sensor to completely attach to detected materials, certain temperature is kept to detected materials until stable, temperature stress passes
Sensor gathers stress data, as primary stress data；
Second step, obtain detected materials temperature data and extraneous fluctuation field intensity data；
3rd step, driving reference test bar rotation, obtains reference test bar rotary speed, angle, time and stress data；
4th step, from the data collecting system records when reference test bar rotates to maximum angle automatically, material stress decays to just
Time segment length during beginning stress, as slack time.
Further, the drive mechanism includes driving source, gear one and gear two, and the gear one and gear two are nibbled
Close, the gear one is with driving source by driving axis connection, the gear two and the reference test bar other end key connection.
Present invention also offers a kind of slack time test device for realizing the Material Relaxation time test method, including
Drive mechanism, reference test bar, container, heater, wavegenerator and position sensor；
Described reference test bar one end is provided with temperature stress sensor, for gathering detected materials temperature data and stress data, separately
One end is connected with drive mechanism；
The drive mechanism includes driving source, gear one and gear two, and the gear one and gear two engage, and the gear one drives
Dynamic source is by driving axis connection, the gear two and the reference test bar other end key connection；The gear two and position sensor
Connection, the anglec of rotation of gear two can be controlled with instantaneous acquiring；The driving source includes driven by power, hydraulic-driven or internal combustion engine
Driving, preferably driven by power；
The heater is arranged at container outer wall, and the wavegenerator is arranged at container bottom.
Specifically, reference test bar upper end is directly rigidly connected with gear two, and position sensor can direct testing gears two
The anglec of rotation（That is the anglec of rotation of reference test bar）, the diameter of gear two is much larger than gear one, so reduces driving source rotator inertia
Influence to reference test bar rotation angle accuracy, so as to improve measuring accuracy.
Further, in addition to data acquisition control system, the data acquisition control system respectively should with the temperature
Force snesor, wavegenerator, driving source electrical connection, for collection analysis detected materials temperature, stress data, fluctuation field intensity
Data and speed, angle and the time data of driving source driving reference test bar rotation.
Further, the reference test bar sequentially passes through clamp nut, gear two and bearing and and temperature stress from top to bottom
Sensor threads are connected, and the clamp nut is threadedly coupled with reference test bar.
Specifically, the reference test bar inner hollow, for drawing the data wire and power line of the temperature stress sensor.
Further, the gear one is involute gear, can also be cycloid gear or wildhaber-novikov gear, is preferably gradually opened
Line gear.
Specifically, in order to preferably control the anglec of rotation of gear two, measuring accuracy is improved, the diameter of gear two is more than
The diameter of gear one.
Further, in addition to reductor, the reductor are arranged at connection power source with the drive shaft of gear one, using
In regulation reference test bar rotary speed.
The present invention has the beneficial effect that：
The present invention realizes the acquisition of detected materials stress data, realizes relaxation by installing temperature stress sensor on reference test bar
The test of time；Also by setting heater and wavegenerator, different temperatures, different fluctuation field intensities and friction speed are realized
Under the conditions of slack time test, can be material property research, material processing plant and process technology scheme provide method and
Data are supported.
Brief description of the drawings
Fig. 1 is slack time test device schematic diagram.
Embodiment
With reference to embodiment, the present invention is further illustrated.Wherein, being given for example only property of accompanying drawing illustrates,
What is represented is only schematic diagram, rather than pictorial diagram, it is impossible to is interpreted as the limitation to this patent；In order to which the reality of the present invention is better described
Example is applied, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；To those skilled in the art
For, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Embodiment 1
As shown in figure 1, the present invention provides a kind of slack time test device for realizing Material Relaxation time test, including driving machine
Structure, reference test bar 5, container 10, heater 11 and wavegenerator 12.
Drive mechanism includes driving source 3, gear 1 and gear 4, and gear 1 and gear 4 engage, and gear 1 passes through with driving source 3
Drive shaft 2 connects, gear 4 and one end key connection of reference test bar 5；Gear 1 is involute gear, and it is straight that the diameter of gear 4 is more than gear 1
Footpath；Reductor is additionally provided between driving source 3 and gear 1, for adjusting the rotary speed of reference test bar 5.
Gear 4 is connected with position sensor 8, then position sensor 8 can will with the anglec of rotation of instantaneous acquiring gear 4
Data send control system to, so as to control the motion of driving source 3.
The other end of reference test bar 5 is provided with temperature stress sensor 14；Specifically, reference test bar 5 sequentially passes through pressure from top to bottom
Tight nut 7, gear 4 and bearing 9 are simultaneously threadedly coupled with temperature stress sensor 14, and clamp nut 7 is threadedly coupled with reference test bar 5；
The inner hollow of reference test bar 5, for drawing the data wire and power line of temperature stress sensor 14.
Heater 11 is arranged at the outer wall of container 10, and wavegenerator 12 is arranged at the bottom of container 10.
Slack time test device also includes data acquisition control system, data acquisition control system respectively with temperature stress
Sensor 14, wavegenerator 12, position sensor 8, driving source 3 electrically connect, for collection analysis detected materials temperature, initially
The speed and time data that stress data, the anglec of rotation, wave field intensity data and driving source driving reference test bar rotate.
The test of Material Relaxation time is realized by setting slack time test device, and concrete mode is as follows：
First, the melt of material 13 or solution are added into container 10, material is then immersed into end for the reference test bar 5 of strain gauge 14
In material 13, strain gauge 14 completely attaches to material 13, then keeps certain temperature to material 13 until stabilization, at this moment, is answered
Force snesor 14 can collect a stress data, and the data are automatically set as into primary stress；
Then, reference test bar 5 is rotated to an angle with certain speed, position sensor gathers the anglec of rotation of gear 4, then
Control driving source stops operating, and locking rotates.The automatic data collection stress data of strain gauge 14, while data acquisition control system
System starts timing, and using the time as abscissa, stress is ordinate, draws stress-time change collection of illustrative plates automatically, reference test bar 5 is with one
Fixed speed rises after rotating to an angle, and corresponding time segment length when reaching primary stress to stress data, is exactly the material
The slack time of material at such a temperature, under speed of action effect.
In test, the wave field for applying some strength to material 13 by starting wavegenerator 12, heater 11 is made
With and temperature, wave field can be ultrasonic wave or other physics fluctuation, realize detected materials at a temperature of certain, certain work
With the slack time under speed, under certain strength fluctuation field action.
, then can be with test material in different speed of actions by changing the rotary speed of reference test bar such as other parameters determination
Under slack time.
If changing material temperature, the slack time of material under different temperatures can be tested.
Obviously, above-described embodiment is only intended to clearly illustrate technical scheme example, and is not
Restriction to embodiments of the present invention.For those of ordinary skill in the field, on the basis of the above description also
It can make other changes in different forms.Any modification for being made within the spirit and principles of the invention, etc.
With replacement and improvement etc., should be included within the protection of the claims in the present invention.
Claims (10)
- A kind of 1. slack time method of testing, for test material melt or solution in the relaxation under different external environments act on Between, it is characterised in that including：One end is set to carry the reference test bar for the temperature stress sensor for being used to gather detected materials temperature data and stress data, will The reference test bar is immersed in the container equipped with detected materials, obtains primary stress data；The reference test bar other end is provided with for driving reference test bar rotating drive mechanism；In the external container, the heater for controlling detected materials temperature and the wavegenerator for applying physical field are set；Start heater and/or wavegenerator, the drive mechanism for being arranged at the reference test bar other end drives test with certain speed Bar rotates to an angle, and is arranged at the strain gauge collection stress data of one end, obtains in certain speed, temperature and vibration The lower stress data of ripple effect and the variation relation of time；It is corresponding during to stress decay to primary stress when stress data numerical value corresponding when maximum angle is moved to Period, produce slack time.
- 2. Material Relaxation time test method according to claim 1, it is characterised in that the stress data passes through data Acquisition control system collection analysis, the data acquisition control system respectively with the temperature stress sensor, wavegenerator, Position sensor and driving source electrical connection, for collection analysis detected materials temperature, primary stress data, wave field intensity data With speed, angle and the time data of driving source driving reference test bar rotation.
- 3. Material Relaxation time test method according to claim 2, it is characterised in that specifically include following steps：S1. primary stress data are obtained, reference test bar of the one end with temperature stress sensor are immersed in detected materials, the temperature Spend strain gauge to completely attach to detected materials, certain temperature is kept to detected materials until stable, temperature stress sensor Gather stress data, as primary stress data；S2. detected materials temperature data and extraneous fluctuation field intensity data are obtained；S3. reference test bar rotation is driven, obtains reference test bar rotary speed, angle, time and stress data；S4. from the data collecting system records when reference test bar rotates to maximum angle automatically, material stress, which decays to, initially should Time segment length during power, produces slack time.
- 4. Material Relaxation time test method according to claim 1, it is characterised in that the drive mechanism includes driving Source, gear one and gear two, the gear one and gear two engage, and the driving source of gear one is described by driving axis connection Gear two and the reference test bar other end key connection.
- 5. one kind realizes the slack time test device of Material Relaxation time test method described in any one of claim 1 ~ 4, It is characterised in that it includes drive mechanism, reference test bar, container, heater, wavegenerator and position sensor；Described reference test bar one end is provided with temperature stress sensor, and the other end is connected with drive mechanism；The drive mechanism includes driving source, gear one and gear two, and the gear one and gear two engage, and the gear one drives Dynamic source is by driving axis connection, the gear two and the reference test bar other end key connection；The gear two passes with the position Sensor connects；The heater is arranged at container outer wall, and the wavegenerator is arranged at container bottom；Also include data acquisition control system, the data acquisition control system respectively with the temperature stress sensor, fluctuation Generator, position sensor, driving source electrical connection, for collection analysis detected materials temperature, primary stress data, fluctuation field strength Degrees of data and speed, angle and the time data of driving source driving reference test bar rotation.
- 6. slack time test device according to claim 5, it is characterised in that the reference test bar is worn successively from top to bottom Cross clamp nut, gear two and bearing and be connected with temperature stress sensor threads, the clamp nut connects with reference test bar screw thread Connect.
- 7. slack time test device according to claim 5, it is characterised in that the reference test bar inner hollow, be used for Draw the data wire and power line of the temperature stress sensor.
- 8. slack time test device according to claim 5, it is characterised in that the gear one be involute gear, Can also be cycloid gear or wildhaber-novikov gear.
- 9. slack time test device according to claim 5, it is characterised in that the diameter of gear two is more than gear one Diameter.
- 10. slack time test device according to claim 5, it is characterised in that also including reductor, the reductor It is arranged in the drive shaft of connection power source and gear one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986493.4A CN107632122A (en) | 2017-10-20 | 2017-10-20 | A kind of slack time method of testing and its device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986493.4A CN107632122A (en) | 2017-10-20 | 2017-10-20 | A kind of slack time method of testing and its device |
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| Publication Number | Publication Date |
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| CN107632122A true CN107632122A (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710986493.4A Withdrawn CN107632122A (en) | 2017-10-20 | 2017-10-20 | A kind of slack time method of testing and its device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827779A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the compression stress relaxation test device and test method of rubber material |
| CN108827780A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the tensile stress relaxation test device and test method of rubber material |
-
2017
- 2017-10-20 CN CN201710986493.4A patent/CN107632122A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827779A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the compression stress relaxation test device and test method of rubber material |
| CN108827780A (en) * | 2018-09-12 | 2018-11-16 | 中国工程物理研究院核物理与化学研究所 | A kind of the tensile stress relaxation test device and test method of rubber material |
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Application publication date: 20180126 |