CN103575759A - Compression and dynamic thermal transmission characteristic measurement equipment for flexible material and measurement method - Google Patents
Compression and dynamic thermal transmission characteristic measurement equipment for flexible material and measurement method Download PDFInfo
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- CN103575759A CN103575759A CN201210275648.0A CN201210275648A CN103575759A CN 103575759 A CN103575759 A CN 103575759A CN 201210275648 A CN201210275648 A CN 201210275648A CN 103575759 A CN103575759 A CN 103575759A
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Abstract
The invention relates to the technical field of material characteristic measurement and discloses compression and dynamic thermal transmission characteristic measurement equipment for a flexible material and a measurement method. The measurement equipment comprises a base plate (1) for mounting all parts, a bracket (8), a horizontal upper test platform (2), a lower test platform (3), a stepping motor (6), a compression measurement module, a signal acquisition module and an analysis processing module, wherein the upper test platform (2) and the stepping motor (6) are arranged on the bracket (8); the compression measurement module is positioned below the lower test platform (3) and supports the lower test platform (3); the input end of the signal acquisition module is connected with the output ends of all sensors respectively; the output end of the signal acquisition module is connected with the input end of the analysis processing module. The measurement equipment can test the compression characteristic and the thermal transmission characteristic of the flexible material on the same instrument at the same time, so that a dynamic change of the thermal transmission performance of the flexible material in a compression process can be comprehensively evaluated.
Description
Technical field
The present invention relates to material behavior field of measuring technique, more particularly, relate to a kind of flexible material compression Dynamic Thermal transmission characteristic measuring equipment and method.
Background technology
The wet transmission of heat and the mechanical characteristic of textile material are the principal elements that determines the comfortableness of human dressing, raising life being required along with appearance and the people of a large amount of new function materials of progress of technology, the raising particularly Comfort of Garment During Wearing being required, more and more needs the heat transfer characteristic in different distortion situation to material to measure.
Famous scientist Kawabata pointed out on the basis of fiber, textile mechanics and objective examination's technology as far back as 1998, and realizing is the striving direction of 21 century to the optimal design of garment material quality and performance.A collection of novel fabric also has the feel (as peach face, Silk sensation) of certain specific type etc. in the gloss with good pliability, drapability and grace.Peach face, grabs pile fabrics, conventionally and show warm one side during skin contact; And real silk and silk-like fabric are also conventionally accompanied by nice and cool sensation except smooth sensation.So it is exactly that it has special heat transfer characteristic when material and skin contact that the appearance of these some novel fabrics has all brought a physical phenomenon.
As everyone knows, general physics is a kind of good insulation material with regard to disclosing static air.Material, being particularly applied in still air layer contained in its warming characteristic of material in textile garment field and fabric has close relationship.There is research to point out that down jackets are sitting on snowfield, if the warming characteristic of part in compression can drop to original 1/6., by its warming characteristic after soaking, only had original 1/20.Therefore the design of the heat preservation property of research material under pressurized condition to function clothes, particularly under extreme conditions the mankind's life condition has real meaning.For example the most basic physical parameter is material thickness, and standard thickness is all the material thickness under some given pressure.This parameter is in product design, particularly widespread use in insulated cold wear design in winter.Therefore these traditional methods can not meet all requirements that occur in actual application well as mentioned above.
The existing a lot of reports of measuring method of existing related materials mechanical property, the main Fabric Style testers such as KES or FAST that use carry out Fabric Style Mechanics Performance Testing to it, and measure the structural parameters such as fabric thickness, grammes per square metre, thickness and grammes per square metre ratio and thread count and analyze.Meanwhile, a lot of research has also proposed many new methods and the mechanical characteristic of material has been measured to improve the deficiency of KES or FAST.Chinese utility model patent for example, ZL00217564.9, has reported a kind of arrangement for measuring bending property of yarn, ZL92220556.6, has reported computer testing instrument for combined strong stretcher for multi-bunch raw silk.ZL200410066649 has introduced combination measurement method and the device that a kind of stretching for textile material, compression, bursting and thorn cut.
China textile industry standard FZ/T010546 has proposed a series of measuring method with regard to the style of fabric, relates to the compression of fabric, bending, the measurement of the multinomial Mechanics of Machinery characteristic such as skin-friction force.
Aspect the measurement of material heat transfer characteristic, there is especially many standards, for example:
● the mensuration > > of thermal resistance and dampness under GB/T 11048-2008 < < textile physiological comfort steady state conditions
● the heat conducting standard test method of ASTM D 1518-85 (Reapproved2003) textile material
● JIS L 1096-1999 general fabrics test method (attached explanation part)
● the measurement of heat-resisting and water-fast steam performance under ISO 11092:1993 textile physiological effect steady state conditions
Contrast the measuring method of traditional flexible material heat transfer characteristic, be all in a given temperature range by the measurement of the different physical parameters relevant to heat transmission (as, the temperature difference on two surfaces, maintain the power that certain surface temperature need to be inputted, heat flux etc.) heat transfer characteristic of material described.Common index has thermal resistance, thermal conductivity, warming rate etc.
But existing measuring method report is all to carry out under constant material thickness.Lack the apparatus and method that a kind of measurement of carrying out material heat transfer performance in material thickness variation process is also described out by the compressor mechanical characteristic of material in the lump.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of flexible material compression Dynamic Thermal transmission characteristic measuring equipment and measuring method.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of flexible material compression Dynamic Thermal transmission characteristic measuring equipment, comprise for chassis and the support of each parts are installed, described support is loaded on described chassis, also comprise that level installs for controlling temperature and measuring the upper test platform of heat flux and be positioned under described upper test platform for placing the lower test platform of sample, for the stepper motor that drives described upper test platform to be in vertical motion, be installed on described chassis for measuring the compression measurement module of pressure that material bears, signal acquisition module and for data analysis, the analysis and processing module that figure shows and index is calculated, described upper test platform and stepper motor are installed on described support, described compression measurement module is positioned at described lower test platform below and supports lower test platform, the input end of described signal acquisition module connects respectively the output terminal of each sensor, analysis and processing module input end described in described signal acquisition module output termination.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described upper test platform comprises temperature measurement module, heating module and is positioned at the heat flux sensor for detection of contactant body heat stream of described upper test platform bottom, and described upper temperature measurement module is positioned at below described heating module and in described heating module and connects; Described upper test platform lower surface has a groove, and described heat flux sensor is attached in described groove and keeps described upper test platform lower surface smooth.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described lower test platform comprises a lower temperature measurement module corresponding with described upper temperature measurement module.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described upper test platform and lower test platform side are equipped with for measuring the range sensor of thickness of sample.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described compression measurement module comprises three pressure transducers and spring, described pressure transducer upper surface is in same plane, described lower test platform is supported in described spring upper end, pressure transducer described in lower termination, and described lower test platform pressure is delivered on described pressure transducer.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described pressure transducer has S type structure.
In flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, described upper test platform lower surface is identical with described lower test platform upper surface area.
The present invention also provides the said equipment to measure the method for flexible material compression Dynamic Thermal transmission characteristic, comprises the following steps:
S1, open and adjust described flexible material compression Dynamic Thermal transmission characteristic measuring equipment, make it enter measurement standby condition;
S2, flexible material sample is measured, and the sensing data real-time rendering material heat flux gathering according to described signal acquisition module by described analysis and processing module in time with the curve of material thickness variation;
S3, according to resulting curve, calculate each compression Dynamic Thermal transmission characteristic index of flexible material sample.
In flexible material compression Dynamic Thermal transmission characteristic measuring method of the present invention, in described step S1, make described upper test platform rise to extreme higher position, described lower test platform is in natural balanced state, by described upper temperature measurement module and lower temperature measurement module, obtain the real time temperature of described upper test platform and lower test platform, start the heating module of described upper test platform, the finishing temperature value that described upper test platform is set is higher 2 ℃-20 ℃ than lower test platform temperature, motor speed is set simultaneously, system maximum pressure value, normal pressure value and tingling sensation critical pressure value.
In flexible material compression Dynamic Thermal transmission characteristic measuring method of the present invention, in described step S2, the flexible material sample level equally large with described lower test platform upper surface area is seated on described lower test platform, the described flexible material compression Dynamic Thermal transmission characteristic measuring equipment pressure that record is now caused by flexible material sample and described lower test platform own wt automatically, and as pressure initial value, when described upper test platform and the lower test platform temperature difference reach setting value, on described under the driving of described stepper motor, test platform moves downward, and compress being put in the flexible material of described lower test platform, when reaching range, described lower test platform will stop moving downward, or reach after the system maximum pressure value of setting, described upper test platform stops continuing to move downward, and keep current state certain hour, then with certain speed, at the uniform velocity upwards promote, in the process of motion with the certain frequency heat flux to flexible material sample continuously, material thickness, pressure, upper test platform and lower test platform temperature are measured.
In flexible material compression Dynamic Thermal transmission characteristic measuring method of the present invention, under the downward compression travel of described upper test platform, be limited to 80mm, its moving range is 0-80mm, its movement velocity is within the scope of 0-20cm/s; After the described platform of going to toilet stops moving downward, keep halted state 10s; The frequency that the heat flux of flexible material sample, material thickness, pressure, upper and lower test platform temperature are measured is 10HZ.
Implement flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and method, can in single job, obtain the heat transfer characteristic of material under different pressurized conditions, thereby save time in a large number and manpower.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 and Fig. 2 are the structural representations of flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention;
Fig. 3 is flexible material compression Dynamic Thermal transmission characteristic measuring equipment S type pressure sensor structure schematic diagram of the present invention;
Fig. 4 is flexible material compression Dynamic Thermal transmission characteristic measuring method overview flow chart of the present invention;
Fig. 5 is the structural representation of flexible material compression Dynamic Thermal transmission characteristic measuring equipment compression verification test subsystems of the present invention;
Fig. 6 is the structural representation that flexible material compression Dynamic Thermal transmission characteristic measuring equipment compression heat of the present invention is transmitted test subsystems;
Fig. 7 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method compression curve index definition;
Fig. 8 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method hot-fluid-time curve index definition;
Fig. 9 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method PSI curve index definition (PSI curve is the differential of hot-fluid time curve);
Flexible material compression Dynamic Thermal transmission characteristic measuring equipment and measuring method heat flux-thickness curve index definition of Figure 10 invention;
Pressure--the thickness curve of Figure 11 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the first embodiment specimen looped fabric;
Heat flux--the time curve of Figure 12 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the first embodiment specimen looped fabric;
Heat flux--the time diffusion PSI curve of Figure 13 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the first embodiment specimen looped fabric;
Heat flux--the thickness curve of Figure 14 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the first embodiment specimen looped fabric;
Pressure--the thickness curve of Figure 15 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the second embodiment specimen woven fabric;
Heat flux--the time curve of Figure 16 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the second embodiment specimen woven fabric;
Heat flux--the time diffusion PSI curve of Figure 17 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the second embodiment specimen woven fabric;
Heat flux--the thickness curve of Figure 18 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the second embodiment specimen woven fabric;
Pressure--the thickness curve of Figure 19 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 3rd embodiment specimen nonwoven fabrics;
The flexible material compression Dynamic Thermal transmission characteristic measuring equipment of Figure 20 invention and heat flux--the time curve of measuring method the 3rd embodiment specimen nonwoven fabrics;
Heat flux--the time diffusion PSI curve of Figure 21 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 3rd embodiment specimen nonwoven fabrics;
Heat flux--the thickness curve of Figure 22 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 3rd embodiment specimen nonwoven fabrics;
Pressure--the thickness curve of Figure 23 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 4th embodiment specimen sponge;
Heat flux--the time curve of Figure 24 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 4th embodiment specimen sponge;
Heat flux--the time diffusion PSI curve of Figure 25 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 4th embodiment specimen sponge;
Heat flux--the thickness curve of Figure 26 flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention and measuring method the 4th embodiment specimen sponge.
Embodiment
For by the sharpening more such as object of the present invention, technical scheme, below in conjunction with, structural representation, the invention will be further elaborated for systematic parameter, test operation step and test flow chart.
Fig. 1 and Fig. 2 are the structural representations of flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention, instrument critical piece of the present invention comprises domain 1 and support 8 and upper test platform 2 and lower test platform 3, go up test platform 2 with heating module 9 that can homogeneous heating simultaneously, and the control that is subject to accurate stepper motor 6 makes its controlled movement in the vertical direction, upper test platform 2 also has a heat flux sensor 11, can be for detecting in real time the heat flux of contact object.In test process by temperature measurement module 10 and lower temperature measurement module 12 guarantee that the temperature difference of upper and lower two temperature surfaces reaches a certain setting value, can between 2 ℃-20 ℃, set as required, conventionally take 10 ℃ as preferred value.The area of upper and lower two test platforms can be selected different sizes as required.Be preferably 10cm * 10cm, platform needs horizontal setting.The distance that upper test platform 2 and lower test platform are 3 is measured by a range sensor 7.Multiple existing displacement transducer can, with reference to also directly quoting, be preferably high-precision laser displacement sensor in the present invention.
In order to obtain the characteristic that in flexible material pressurized process, pressure changes, lower test platform 3 is installed on an elastic support, and the pressure that produces is dispersed and transmits on three special pressure transducers 5.The weight that the pressure of measured material cuts spring 4 and lower test platform 3 and sample by the stressed sum by these three sensors obtains.Using three pressure transducers 5 is because three points can form a plane, and use resilient connection can eliminate upper and lower two test platforms in mechanical erection process, measures the error that face is not parallel or sample placement is out-of-level caused.Because the area of measuring table is certain, therefore, force value can convert easily pressure values to and express.In order to obtain high-precision pressure sensing, the pressure transducer 5 of particular design has the structure of S type, as shown in Figure 3, adopts foil gauge measuring technique to obtain the deflection causing due to pressurized.Existing foil gauge measuring technique can make reference and quote at this.
Systematic parameter:
1. preset the travel line speed 1mm/s of motor, optional scope 0-10mm/s;
2. the optional scope 0-80mm of distance 50mm that default sample traction platform lower wall is pressed down;
3. default motor dish on default sample traction platform presses to the residence time 10s after predeterminable range (50mm), optional scope 0-600s;
4. spring 4 maximum deformation quantities can reach 60mm, maximal work load 150N;
5. laser ranging displacement sensor measurement range scope is 0-25mm, and precision can reach 10 μ m;
6. two square copper coins up and down of test traction platform optional scope 8cm*8cm-12cm*12cm of area separately, first-selected 10cm*10cm, the optional 1-3cm of copper plate thickness, first-selected 2cm;
7. test specimens is of a size of 10cm*10cm.
Test operation step: (see figure 4)
S1. open system power supply, opens computer testing software interface;
S2. if desired calibration enters system calibration menu, and pick up calibration parameter is set, motor travelling speed, and test depression distance, the parameters such as the motor residence time, otherwise enter step S3;
S3. click interface and start testing button, system hummer sends " dripping " two sound prompting tests to start, now motor will reset, the upper dish of the traction of motor automatic traction test afterwards platform, according to setting speed uniform descent, the sample being clamped by upper and lower two dishes, along with upper dish declines, carries out in real time data acquisition at whole descending motion process Computer, and shows curve;
S4. when lower wall arrives predeterminable range rear motor, stop 10s, lower wall at the uniform velocity rises to initial position afterwards, and whole data acquisition is complete;
S5. according to fetched data, the automatic parameter of computing machine, after completing, system hummer sends " dripping " two sound prompting tests to be finished;
S6. return to step S1, test next time.
The structural representation of compression verification test subsystems in flexible material compression Dynamic Thermal transmission characteristic measuring equipment of the present invention as shown in Figure 5, Fig. 6 is the structural representation that flexible material compression Dynamic Thermal transmission characteristic measuring equipment compression verification heat of the present invention is transmitted test subsystems, the flexible material sample level equally large with lower test platform 3 upper surface area is seated on lower test platform 3, the flexible material compression Dynamic Thermal transmission characteristic measuring equipment pressure that record is now caused by flexible material sample and lower test platform 3 own wts automatically, and as pressure initial value, when upper test platform 2 reaches setting value with lower test platform 3 temperature difference, on under the driving of stepper motor 6, test platform 2 moves downward, and compress being put in the flexible material of lower test platform 3, when reaching range, lower test platform 3 will stop moving downward, or reach after the system maximum pressure value of setting, upper test platform 2 stops continuing to move downward, and keep current state certain hour, then with certain speed, at the uniform velocity upwards promote, in the process of motion with the certain frequency heat flux to flexible material sample continuously, material thickness, pressure, upper test platform 2 and lower test platform 3 temperature are measured.
As shown in Figure 7, be the pressure-dependent performance graph of thickness of typical material.In whole measuring process, comprise two stages: the first stage is compression stage, in this process, along with the thickness of the continuous increase material of pressure, constantly reduce to cause thus the continuous variation of material heat transfer characteristic; Subordinate phase is recovery stage.Upper measuring table upwards promotes with a constant speed.Movement velocity is controlled within the scope of 0-10mm/s, preferred movement speed 1mm/s.Now material is because himself elastic characteristic has the trend of recovering former state, and thus still to lower measuring table build-up of pressure.Therefore according to the relation between pressure in process and material thickness, can obtain following material compression property:
(1). thickness: material is at compression and thickness under different pressure in rejuvenation.The one-tenth-value thickness 1/10 under certain some special pressure conditions particularly;
D: the thickness of sample (mm);
P: the pressure (gf/cm that sample bears
2);
D
0: at pressure, be 0---5gf/cm
2time, the thickness of sample (mm), preferably 0.5gf/cm
2;
Ds: the normal pressure (gf/cm of sample
2), the selected testing standard with reference to ASTM D1777-96 (2011)-textile material thickness of pressure;
Dm: the maximum pressure (gf/cm of sample
2) time sample thickness (mm); The selected classification with sample of maximum pressure is relevant.Before measurement starts, by default, the scope that arranges of this instrument is at 50gf/cm
2-500gf/cm
2, preferred 70gf/cm
2;
(2). work done during compression: pressure is increased to maximal value gradually in upper measuring table decline process, measuring table is exerted pressure and is caused material thickness to change and work (gf*mm) material, that is: material pressure and fabric thickness reduce area under the curve that variable quantity surrounds;
(3). resilience merit: at pressure, from maximal value, be gradually reduced to zero process, go up in the process of measuring table rising, material pressure and area under the curve that fabric thickness surrounds (gf*mm);
(4). rebound degree: the ratio of resilience merit and work done during compression;
(5). linear rate: the ratio of work done during compression and linear change power demand;
(6). maximum compression modulus: be increased to gradually in maximal value process at pressure, material pressure and fabric thickness surround rate of curve maximal value (gf/mm);
(7). development of maximum resilient modulus: from maximal value to being gradually reduced to zero process, material pressure and fabric thickness surround rate of curve maximal value (gf/mm), at pressure;
As shown in Figure 8, for passing through the hot-fluid of material and the relation of time in typical compression and Recovery Process.Time point t1, contacts material for upper measuring table rigidly connects, and therefore producing type of thermal communication crosses material.Because the temperature of measured material is that standard laboratory environment temperature (normally 20 ℃) is the same with the temperature of lower measuring table.The temperature difference is larger, so the numerical value of hot-fluid just increases with speed faster, and reaches in the short period of time maximum heat flow valuve.Research also shows this characteristic and the daily contact of people cold and hot feel to have very large associated.As time goes on material is because self temperature of heat absorption will promote, so heat flux will reduce and reach the dynamic equilibrium point t2 of heat absorption and heat radiation.Complete after measurement, t3 is that upper measuring table starts the time point rising, and along with the lifting of upper measuring table, the hot-fluid of leaving away of high temperature source can lower fast.Performance graph, can obtain following material heat transfer characteristic thus.
(8). maximum heat flow: the heat flux maximal value (w/m that passes material in test process
2), in Fig. 8
(9). the duration of thermal conditioning (s),
T
duration＝t
2-t
1
(10). material thermal conditioning ability (w/m
2):
The mean value of hot-fluid during Qes equilibrium state (from t2 to t3, in Fig. 8)
(11). relative thermal conditioning index:
D|
tthickness for t moment material
On basis discussed above, after the hot-fluid time curve differential shown in Fig. 8, obtain PSI curve, i.e. the physiological change intensity curve of temperature, as shown in Figure 9.Along with the rate of change of hot-fluid, obtain the physiological sensation change intensity PSI in compression process
downwith the physiological sensation change intensity PSI in Recovery Process
up.
(12). the physiological sensation change intensity (w*s/m of temperature in compression process
2), i.e. PSI
down
(13). the physiological sensation change intensity (w*s/m of temperature in Recovery Process
2), i.e. PSI
up
Can also obtain the curve of hot-fluid and material thickness variation in compression and rejuvenation, as shown in figure 10 simultaneously.Can obtain thus the heat transfer characteristic of material in difference compression situation.
(14). the thermal resistance (m under material original depth
2* ℃/w):
Δ T|
tthe temperature difference on the t moment upper and lower two surfaces of material in test process,
(15). (w*mm/ (m of the initial thermal conductivity coefficient under material original depth
2* ℃))
(16). the thermal resistance (m of material under maximum compression degree
2* ℃/w):
(17). the coefficient of heat conductivity (w*mm/ (m of material under maximum compression degree
2* ℃):
(18). the material thermal resistance (m under compression process Plays thickness
2* ℃/w):
(19). the coefficient of heat conductivity (w*mm/ (m under compression process Plays thickness
2* ℃)):
(20). the material thermal resistance (m under Recovery Process Plays thickness
2* ℃/w):
(21). the coefficient of heat conductivity (w*mm/ (m under Recovery Process Plays thickness
2* ℃)):
Below in conjunction with preferred embodiment and accompanying drawing, describe the present invention in detail.
The sample of take in the present invention traction platform (lower test platform 3) is basis, under the driving of stepper motor 6, upper test platform 2 stays for some time the sample that also compresses gradually lower wall with certain speed (as 1mm/s) uniform descent as 10s to maximum pressure, does afterwards at the uniform velocity upward movement until upper test platform 2 departs from samples and gets back to initial position.In whole motion process, the temperature that this testing tool Real-time Obtaining is relevant, mechanics and displacement signal, and the working time of automatic production record.After being completed, according to obtained data, calculate each index that can reflect tested selected sample thermal behavior and compression performance.
In order to evaluate the compression property of flexible material, heat transfer characteristic, and Dynamic Thermal transmission characteristic in compression process, below chosen respectively the looped fabric of thicker sponge, intermediate gauge, general woven fabric and thinner nonwoven fabrics the sample of totally four kinds of different materials test.
Embodiment 1:
A looped fabric specimen is laid in to the lower wall of sample traction platform, opens computer testing software interface hit testing and start, system hummer sends " dripping " two sound prompting tests to start.Now go up test platform 2 and start heating, until meet the upper and lower two dish temperature difference, reach 10 ℃, stepper motor 6 makes upper dish with the speed uniform descent of 1mm/s the drive link by being connected with leading screw, computing machine starts Real-time Obtaining and records upper lower burrs temperature, hot-fluid, the physical signalling such as pressure and pressure, and showing with curve form, until meet maximum pressure that the suffered pressure of sample reaches setting as 70.3gf/cm
2, motor stops operating and keeps 10s.Motor reversal drives dish at the uniform velocity to rise to and touch upper limit position switch motor and stop operating with the speed of 1mm/s afterwards, and now system hummer sends " dripping " two sound prompting tests and finishes.Test result curve is as shown in accompanying drawing 11-14.
Test index is as shown in the table
Embodiment 2:
A woven fabric specimen is laid in to the lower wall of sample traction platform, opens computer testing software interface hit testing and start, system hummer sends " dripping " two sound prompting tests to start.Now upper dish starts heating, until meet the upper and lower two dish temperature difference, reach 10 ℃, stepper motor 6 makes upper dish with the speed uniform descent of 1mm/s the drive link by being connected with leading screw, computing machine starts Real-time Obtaining and records upper lower burrs temperature, hot-fluid, the physical signallings such as pressure and pressure, and show with curve form, until meet maximum pressure that the suffered pressure of sample reaches setting as 70.3gf/cm2, motor stops operating and keeps 10s.Motor reversal drives dish at the uniform velocity to rise to and touch upper limit position switch motor and stop operating with the speed of 1mm/s afterwards, and now system hummer sends " dripping " two sound prompting tests and finishes.Test result is shown as accompanying drawing 15-18.
Test index is as shown in the table
Embodiment 3:
A nonwoven fabrics specimen is laid in to the lower wall of sample traction platform, opens computer testing software interface hit testing and start, system hummer sends " dripping " two sound prompting tests to start.Now upper dish starts heating, until meet the upper and lower two dish temperature difference, reach 10 ℃, stepper motor 6 makes upper dish with the speed uniform descent of 1mm/s the drive link by being connected with leading screw, computing machine starts Real-time Obtaining and records upper lower burrs temperature, hot-fluid, the physical signallings such as pressure and pressure, and show with curve form, until meet maximum pressure that the suffered pressure of sample reaches setting as 70.3gf/cm2, motor stops operating and keeps 10s.Motor reversal drives dish at the uniform velocity to rise to and touch upper limit position switch motor and stop operating with the speed of 1mm/s afterwards, and now system hummer sends " dripping " two sound prompting tests and finishes.Test result is as accompanying drawing 19-22
Test index is as shown in the table
Embodiment 4:
A sponge specimen is laid in to the lower wall of sample traction platform, opens computer testing software interface hit testing and start, system hummer sends " dripping " two sound prompting tests to start.Now upper dish starts heating, until meet the upper and lower two dish temperature difference, reach 10 ℃, stepper motor 6 makes upper dish with the speed uniform descent of 1mm/s the drive link by being connected with leading screw, computing machine starts Real-time Obtaining and records upper lower burrs temperature, hot-fluid, the physical signallings such as pressure and pressure, and show with curve form, until meet maximum pressure that the suffered pressure of sample reaches setting as 70.3gf/cm2, motor stops operating and keeps 10s.Motor reversal drives dish at the uniform velocity to rise to and touch upper limit position switch motor and stop operating with the speed of 1mm/s afterwards, and now system hummer sends " dripping " two sound prompting tests and finishes.Test result is shown as accompanying drawing 23-26.
Test index is as shown in the table
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (11)
1. a flexible material compresses Dynamic Thermal transmission characteristic measuring equipment, it is characterized in that, comprise chassis (1) and support (8) for each parts are installed, described support (8) is loaded on described chassis (1), also comprise that level installs for controlling temperature and measuring the upper test platform (2) of heat flux and be positioned under described upper test platform (2) for placing the lower test platform (3) of sample, be used for the stepper motor (6) that drives described upper test platform (2) to be in vertical motion, be installed on described chassis (1) upper for measuring the compression measurement module of pressure that material bears, signal acquisition module and for data analysis, the analysis and processing module that figure shows and index is calculated, described upper test platform (2) and stepper motor (6) are installed on described support (8), described compression measurement module is positioned at described lower test platform (3) below and supports lower test platform (3), the input end of described signal acquisition module connects respectively the output terminal of each sensor, analysis and processing module input end described in described signal acquisition module output termination.
2. flexible material according to claim 1 compresses Dynamic Thermal transmission characteristic measuring equipment, it is characterized in that, described upper test platform (2) comprises temperature measurement module (10), heating module (9) and is positioned at the heat flux sensor (11) for detection of contactant body heat stream of described upper test platform (2) bottom, and described upper temperature measurement module (10) is positioned at described heating module (9) below and is connected with described heating module (9); Described upper test platform (2) lower surface has a groove, and described heat flux sensor (11) is attached in described groove and keeps described upper test platform (2) lower surface smooth.
3. flexible material compression Dynamic Thermal transmission characteristic measuring equipment according to claim 1, is characterized in that, described lower test platform (3) comprises a lower temperature measurement module (12) corresponding with described upper temperature measurement module (10).
4. flexible material according to claim 1 compression Dynamic Thermal transmission characteristic measuring equipment, is characterized in that, test platform (2) is equipped with the range sensor (7) for measuring thickness of sample with lower test platform (3) side on described.
5. flexible material according to claim 1 compresses Dynamic Thermal transmission characteristic measuring equipment, it is characterized in that, described compression measurement module comprises three pressure transducers (5) and spring (4), described pressure transducer (5) upper surface is in same plane, described lower test platform (3) is supported in described spring (4) upper end, pressure transducer (5) described in lower termination, and described lower test platform (3) pressure is delivered on described pressure transducer (5).
6. flexible material compression Dynamic Thermal transmission characteristic measuring equipment according to claim 5, is characterized in that, described pressure transducer (5) has S type structure.
7. flexible material compression Dynamic Thermal transmission characteristic measuring equipment according to claim 1, is characterized in that, described upper test platform (2) lower surface is identical with described lower test platform (3) upper surface area.
8. right to use requires a flexible material compression Dynamic Thermal transmission characteristic measuring method for flexible material compression Dynamic Thermal transmission characteristic measuring equipment described in 1, it is characterized in that, comprises the following steps:
S1, open and adjust described flexible material compression Dynamic Thermal transmission characteristic measuring equipment, make it enter measurement standby condition;
S2, flexible material sample is measured, and the sensing data real-time rendering material heat flux gathering according to described signal acquisition module by described analysis and processing module in time with the curve of material thickness variation;
S3, according to resulting curve, calculate each compression Dynamic Thermal transmission characteristic index of flexible material sample.
9. flexible material according to claim 8 compresses Dynamic Thermal transmission characteristic measuring method, it is characterized in that, in described step S1, make described upper test platform (2) rise to extreme higher position, described lower test platform (3) is in natural balanced state, by described upper temperature measurement module (10) and lower temperature measurement module (12), obtain the real time temperature of described upper test platform (2) and lower test platform (3), start the heating module (9) of described upper test platform (2), the finishing temperature value that described upper test platform (2) is set is higher 2 ℃-20 ℃ than lower test platform (3) temperature, motor speed is set simultaneously, system maximum pressure value, normal pressure value and tingling sensation critical pressure value.
10. flexible material according to claim 8 compresses Dynamic Thermal transmission characteristic measuring method, it is characterized in that, in described step S2, the flexible material sample level equally large with described lower test platform (3) upper surface area is seated on described lower test platform (3), the described flexible material compression Dynamic Thermal transmission characteristic measuring equipment pressure that record is now caused by flexible material sample and described lower test platform (3) own wt automatically, and as pressure initial value, when described upper test platform (2) and lower test platform (3) temperature difference reach setting value, under the driving of described stepper motor (6), described upper test platform (2) moves downward, and compress being put in the flexible material of described lower test platform (3), when reaching range, described lower test platform (3) will stop moving downward, or reach after the system maximum pressure value of setting, described upper test platform (2) stops continuing to move downward, and keep current state certain hour, then with certain speed, at the uniform velocity upwards promote, in the process of motion with the certain frequency heat flux to flexible material sample continuously, material thickness, pressure, upper test platform (2) and lower test platform (3) temperature are measured.
11. flexible material compression Dynamic Thermal transmission characteristic measuring methods according to claim 10, it is characterized in that, described upper test platform (2) is limited to 80mm under compression travel downwards, and its moving range is 0-80mm, and its movement velocity is within the scope of 0-20cm/s; After the described platform of going to toilet stops moving downward, keep halted state 10s; The frequency that the heat flux of flexible material sample, material thickness, pressure, upper and lower test platform (3) temperature are measured is 10HZ.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444417A (en) * | 2018-03-20 | 2018-08-24 | 中国电子科技集团公司第三十八研究所 | A kind of acquisition methods of multilayer plain cloth thickness reduction |
| CN113432576A (en) * | 2021-06-17 | 2021-09-24 | 哈尔滨工业大学 | Titanium alloy thin-wall component differential temperature forming resilience testing device and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6116777A (en) * | 1996-09-10 | 2000-09-12 | Pause; Barbara Hildegard | Procedure and device for the measurement of thermophysical characteristics of textiles and other plate-like materials |
| CN1614417A (en) * | 2004-10-27 | 2005-05-11 | 东华大学 | Multifunctional measuring method and device for flexible material bending fatigue |
| JP2006118996A (en) * | 2004-10-21 | 2006-05-11 | Marutani Shiko Kk | Concrete tester and concrete testing method using it |
| JP2007093509A (en) * | 2005-09-30 | 2007-04-12 | National Institute Of Advanced Industrial & Technology | Thermal physical property measurement method and device |
| CN201016946Y (en) * | 2007-03-07 | 2008-02-06 | 华为技术有限公司 | Heat conductive material parameter testing device |
| CN101169401A (en) * | 2006-10-27 | 2008-04-30 | 香港理工大学 | Measuring apparatus for fabric dynamic heat and moisture transmission characteristic |
| CN101251502A (en) * | 2008-04-09 | 2008-08-27 | 东华大学 | Apparatus and method for measuring textile heat conduction, thermal diffusivity and volumetric heat capacity |
| CN101699275A (en) * | 2009-10-30 | 2010-04-28 | 东华大学 | Device and method for detecting heat conducting property of high bulky easily-deformable material |
| CN202075252U (en) * | 2011-04-27 | 2011-12-14 | 绍兴文理学院 | Thermo-technical test device composed of data collection board card external control power supply and heater |
| CN202110153U (en) * | 2011-06-24 | 2012-01-11 | 河南省建筑科学研究院有限公司 | Heat insulating wall heat transmission coefficient detecting system in heat insulation experiment of building walls |
-
2012
- 2012-08-03 CN CN201210275648.0A patent/CN103575759B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6116777A (en) * | 1996-09-10 | 2000-09-12 | Pause; Barbara Hildegard | Procedure and device for the measurement of thermophysical characteristics of textiles and other plate-like materials |
| JP2006118996A (en) * | 2004-10-21 | 2006-05-11 | Marutani Shiko Kk | Concrete tester and concrete testing method using it |
| CN1614417A (en) * | 2004-10-27 | 2005-05-11 | 东华大学 | Multifunctional measuring method and device for flexible material bending fatigue |
| JP2007093509A (en) * | 2005-09-30 | 2007-04-12 | National Institute Of Advanced Industrial & Technology | Thermal physical property measurement method and device |
| CN101169401A (en) * | 2006-10-27 | 2008-04-30 | 香港理工大学 | Measuring apparatus for fabric dynamic heat and moisture transmission characteristic |
| CN201016946Y (en) * | 2007-03-07 | 2008-02-06 | 华为技术有限公司 | Heat conductive material parameter testing device |
| CN101251502A (en) * | 2008-04-09 | 2008-08-27 | 东华大学 | Apparatus and method for measuring textile heat conduction, thermal diffusivity and volumetric heat capacity |
| CN101699275A (en) * | 2009-10-30 | 2010-04-28 | 东华大学 | Device and method for detecting heat conducting property of high bulky easily-deformable material |
| CN202075252U (en) * | 2011-04-27 | 2011-12-14 | 绍兴文理学院 | Thermo-technical test device composed of data collection board card external control power supply and heater |
| CN202110153U (en) * | 2011-06-24 | 2012-01-11 | 河南省建筑科学研究院有限公司 | Heat insulating wall heat transmission coefficient detecting system in heat insulation experiment of building walls |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444417A (en) * | 2018-03-20 | 2018-08-24 | 中国电子科技集团公司第三十八研究所 | A kind of acquisition methods of multilayer plain cloth thickness reduction |
| CN113432576A (en) * | 2021-06-17 | 2021-09-24 | 哈尔滨工业大学 | Titanium alloy thin-wall component differential temperature forming resilience testing device and method |
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|---|---|
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