CN108593708A - A kind of test device and evaluation method of fabric cooling function - Google Patents
A kind of test device and evaluation method of fabric cooling function Download PDFInfo
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- CN108593708A CN108593708A CN201810793360.XA CN201810793360A CN108593708A CN 108593708 A CN108593708 A CN 108593708A CN 201810793360 A CN201810793360 A CN 201810793360A CN 108593708 A CN108593708 A CN 108593708A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The present invention relates to a kind of test devices and evaluation method of textile fabric cooling function.Test device includes test environment climatic chamber, experimental bench, host and computer.Climatic chamber is made of refrigeration system, humidification system and heated for controlling temperature system；Experimental bench includes that test board, heating plate and surrounding protection heat-insulating shield, test board are equipped with temperature sensor；Host includes that built-in controllable silicon adjusts heater and data collecting system.The test method of fabric cooling function is mainly the test of fabric dry and wet state heating curve.The present invention can be with cooling functions such as the nice and cool performances of comprehensive characterization fabric, including heat transmission, moisture diffusion/evaporative heat loss and the decalescence of fabric.
Description
Technical field
The present invention relates to a kind of test device of fabric cooling function and the fabric based on the test device is felt nice and cool and is evaluated
Method belongs to textile inspection field.
Background technology
As the improvement of people's living standards, the seasonality of clothes, functionality and comfort are greatly paid close attention to.Winter
Clothes require heat generating and retention comfortable, and summer clothes will meet hydroscopic fast-drying, the nice and cool functional requirement to radiate.Fabric is good to lead
Heat, height lead the wet performances such as wet and phase-transition heat-storage that dissipate and both contribute to the good cooling function of fabric realization.The good thermal conductivity of fabric
Human body quantity of heat production can be made quickly outwardly to conduct；The rapid evaporation of moisture can take away a large amount of heat to reach after perspiring
The purpose of cooling；It directly adds during fibre spinning or phase-change material is embedded in fabric by way of final finishing, make it
Reach a certain temperature range in human body temperature and starts decalescence cooling.Rationally effectively cooling function detection method is evaluation fabric
The necessary means of cooling function contribute to the design and research and development of nice and cool fabric.However the evaluation for fabric cooling function at present
Not yet form unified detection method and standard.
Currently, the evaluation criterion (GBT 35263-2017, FTTS-FA-019) for fabric creeping chill has been established in China, it is main
To be the test that fabric contacts changes in temperature sense, under the conditions of defined experimental enviroment, sample and temperature are detected higher than the heat of sample
Plate contacts, and measures heat detection plate temperature and changes with time, and calculate its contact cool feeling coefficient (Q-max), thus characterizes sample
Instantaneous touch cool feeling performance, numerical value is bigger, and expression fabric cool feeling performance is better, and the smaller expression cool feeling performance of numerical value is poorer.It should
Test method mainly characterizes the moment maximum heat flow of fabric, closely related with the heat conductivility of fabric itself, is only applicable to people
There are when the apparent temperature difference, moment cool feeling when fabric dry state cannot react fabric in practical wearing process for body skin and fabric
Cooling function.
The heat conductivility of fabric usually tests (GB/T11048-2008, ISO11092 and ASTM F1868) with flat band method,
Can characterize the indexs such as the thermal resistance, dampness, thermal coefficient of fabric, the test method can only test fabric reach the hot property of stable state
Index has different with the practical dress of clothes, is only applicable to, to the rough description of the nice and cool performance of fabric dry state, to react and knit
The dynamic heat transfer performance of object.
The aqueous water transfer performance of fabric and the test method of Moisture absorbing ＆ quick drying property it is more (GB/T 21655.1-2008,
GB/T 21655.2-2009, AATCC79 etc.), such method mainly characterizes the saturating of the diffusion of moisture, transmission, wicking and fabric
Wet ability.Such method is primarily adapted for use in the evaluation of Humid Permeability of Fabrics performance.And moisture is during evaporation, diffusion or transmission
Radiating and cooling has cooling function.The moisture evaporation rate of fabric, diffusion rate, delivery rate etc. are faster, and nice and cool performance is got over
Good, such method is only applicable to carry out qualitative and a degree of quantitatively characterizing to the nice and cool performance of the hygrometric state of fabric, cannot be complete
React the cooling function of fabric.
The test of phase-changing and temperature-regulating type fabric cooling function tests phase transition function textile usually using differential scanning calorimetry
Temperature adjusting performance, the quality for temperature adjustment function of being felt nice and cool with the size of enthalpy characterization fabric.Enthalpy is bigger, and the nice and cool temperature adjustment function of fabric is got over
It is good；Enthalpy is smaller, and temperature adjustment function of feeling nice and cool is relatively poorer.This method can quantitative forecast phase-changing and temperature-regulating fabric temperature adjustment function, and
Cannot characterize textile garment practical wearing process cooling-down effect.
The Chinese invention patent of Patent No. ZL 200910273121.2 discloses a kind of fabric contact coldness test device
And the Chinese invention patent of test method, Patent No. ZL 201510574661.X discloses a kind of hot flow type fabric cool feeling survey
Examination equipment and test method are related to fabric creeping chill test method, and above-mentioned two patent characterizes fabric with moment maximum heat current density
Moment cool feeling.The Chinese invention patent of Patent No. ZL 201110096313.8 disclose a kind of textile hot-moisture retention test instrument,
The Chinese invention patent of Patent No. CN201610298557.7 discloses experiment test system and the side of a kind of protective garment thermal resistance
Method has invented thermal resistance and the test method of thermal coefficient, and above-mentioned two patent characterizes the conductivity of heat of fabric with thermal resistance and thermal coefficient
Energy.The above two classes method is only used for heat transfer cool feeling evaluation in the case of fabric dry state.And during the broiling summer or in thermal environment, human body
It can largely perspire, the important indicator for leading wet heat dissipation performance and nice and cool fabric evaluation of fabric.
The test of fabric cooling function is to evaluate the indispensable means of fabric cooling function, at present to the evaluation of fabric cooling function
Method is mainly fabric creeping chill (moment maximum heat flow/density) and two kinds of evaluation methods of thermal resistance, and the two methods are only applicable in
In the evaluation of fabric dry state heat transfer property, the instantaneous touch creeping chill and heat conductivility of fabric can be characterized.
Invention content
The object of the present invention is to provide a kind of based on fabric dry state, the test device and evaluation method of hygrometric state cooling function,
It can be used for the conducting heat of fabric, dissipate the cooling functions such as wet, phase transformation and carry out overall merit.
In order to achieve the above object, the technical solution of the present invention is to provide a kind of test device of fabric cooling function,
It is characterized in that：Including climatic chamber, experimental bench, host and computer, wherein：
Experimental bench is set in climatic chamber, and probe is additionally provided in climatic chamber, probe internally provided for detecting constant temperature perseverance
The temperature sensor one of wet the temperature inside the box and the humidity sensor for detecting humidity in climatic chamber by refrigeration system and add
Temperature in thermal control temperature system adjustment climatic chamber, by the humidity in humidification system regulating thermostatic constant humidity cabinet
Experimental bench includes test board, below the test board and be close to the heating plate of test board and be centered around test board and
Protection heat-insulating shield around heating plate, tested fabric are covered on test board, and temperature is equipped between test board and tested fabric and is passed
Sensor two；
Silicon-controlled adjusting heater and data collecting system are equipped in host, silicon-controlled adjusting heater is used for setting
Firm power heating plate, data collecting system be used for real-time collecting temperature sensor two temperature；
Temperature sensor one, humidity sensor, refrigeration system, heated for controlling temperature system, humidification system, silicon-controlled adjusting heating
Device, temperature sensor two are connect with computer.
There is provided a kind of characterizing methods of fabric cooling function, predominantly fabric liter for another technical solution of the present invention
The test of warm curve, including fabric dry state (standard environment balance or absolute dry condition) heating curve test and fabric hygrometric state (contain
A certain amount of moisture) heating curve test.The test of dry state heating curve can characterize the quality of fabric heat-conductive characteristic, same
Under kind test condition, fabric reaches the time t of same temperaturedFabric surface temperature is lower in longer or identical heating time,
Heat conductivility or phase-transition heat-storage performance are better.Hygrometric state heating curve can with the nice and cool performance of fabric after comprehensive characterization perspiring,
Heat transfer, scattered wet heat dissipation including fabric, phase transformation (moisture evaporation phase transformation and the phase transformation of phase transition function textile phase-change material) are inhaled
Heat, under test condition of the same race, fabric reaches the time t of same temperaturewLonger or identical heating time fabric surface temperature is got over
Low, the nice and cool performance of fabric is better after perspiring.The difference curve T of the real-time dry state temperature and real-time hygrometric state temperature of fabric
(t)=Td(t)-Tw(t) quick-drying of fabric can be characterized and dissipate wet cooling function, the peak value T of T (t) curvesmaxIt is worth bigger, fabric
Dissipate wet nice and cool performance it is better.
It is characterized in that, the characterizing method includes the following steps：
The first step：Fabric pretreatment to be measured
(a) dry state is tested：Tested fabric is placed on to the constant-temperature constant-humidity environment inner equilibrium 24 hours of standard atmosphere, makes to knit
Object reaches the wet balance of heat；(b) hygrometric state is tested：Test is tested the quality m after fabric drying, and tested fabric is then completely immersed in three
It is saturated to water absorption of fabrics in grade water, moisture is squeezed out the tested fabric after water suction to not dripping to by certain pressure with roller
State, then it is m+m1 that tested fabric is placed on to the quality for allowing moisture evaporation to diffuse to tested fabric under standard environment, even if
Water of the tested fabric uniformly containing m1 mass, m1 can be according to test fabric category settings；
Second step：Test equipment debugging preheating
It sets climatic chamber to standard environment humiture, or the warm and humid of climatic chamber is arranged according to experiment demand
Degree；By the temperature setting of test board to initial temperature；
Third walks：Sample test
Climatic chamber is opened, tested fabric is lain in a horizontal plane on test board, fabric is clamped rapidly, shuts perseverance
Constant temperature and humidity case heats test board with firm power by silicon-controlled adjusting heater, and acquires tested fabric and connect with test board
The data that contacting surface temperature changes over time, when temperature rises to setting test temperature, test terminates；
4th step：Data processing
(a) it does, hygrometric state heating data processing：The dry state recorded by data collecting system, wet web surface are stored respectively
Temperature-time data；Collected data per second are averaging processing：Wherein,To be knitted in the i periods
Object shows face average temperature value, TijFor the fabric surface temperature of i period jth seconds, j=1,2......10；Dry state, hygrometric state liter
Warm curve reaches the time t needed for a certain specific temperatured、twLonger, heating rate is slower, and cooling function is better；
(b) it does, hygrometric state temperature difference data processing：Calculate the temperature difference of each heating-up time section of dry state, hygrometric state, Ti=Tdi-Twi,
In, TiFor i moment dry state, wet web surface temperature difference, TdiFor i moment dry state fabric surface temperatures, TwiIt is knitted for i moment hygrometric states
Object surface temperature；Fabric dry and wet state maximum temperature difference TmaxBigger, quick-drying performance, hygrometric state cooling function are better.
Preferably, in the second step, to reduce the error of test equipment, before testing by the temperature of the test board
It is cooled to initial temperature after rising to test final temperature.
Compared with existing test equipment and test method, the advantage of the invention is that：
1) existing fabric cool feeling test equipment is compared, which increases adding to control heating plate for silicon-controlled adjusting heater
Thermal power, with the firm power of setting or constant speed increase and decrease power to tested fabric heating, simulation human body is continuous during the motion
The process of emitting heat quantity, can be with the dynamic process of the wet conduction of test fabric heat, diffusion.
2) existing fabric cool feeling function evaluation methods are compared, test fabric dry state and hygrometric state heat conduction dissipate the test method simultaneously
Hot property, can be with heat transmission, moisture diffusion/evaporative heat loss and the phase transformation of the nice and cool performance of comprehensive characterization fabric, including fabric
The cooling functions such as heat absorption.
3) difference curve T (t)=T of the real-time dry state temperature and real-time hygrometric state temperature of fabricd(t)-Tw(t) it can characterize
The quick-drying of fabric and scattered wet cooling effect, the peak value T of T (t) curvesmaxValue is bigger, and the scattered wet nice and cool performance of fabric is better.
4) test operation is simple and convenient, can save a large amount of fabrics synthesis and feel nice and cool that (thermal resistance, moment connect for the tests of performance evaluations
Touch cool feeling, moisture evaporation rate etc.) time.
Description of the drawings
Fig. 1 is the structural schematic diagram of the fabric surface temperature test device of test method of the present invention；
Fig. 2 is the embodiment of the present invention test fabric sample dry state heating curve figure；
Fig. 3 is the embodiment of the present invention test fabric sample hygrometric state heating curve figure；
Fig. 4 is the embodiment of the present invention dry and wet state difference curve figure；
Description of symbols：1- climatic chambers；2- experimental benches；3- hosts；4- computers；5- refrigeration systems；6- humidification systems；
7- heated for controlling temperature systems；8- pops one's head in；9- test boards；10- heating plates；11- protects heat-insulating shield；12- temperature sensors；13- fabrics
Folder；14- is tested fabric；The silicon-controlled adjusting heaters of 15-；16- data collecting systems.
Specific implementation mode
In order to make the present invention more obvious and understandable, hereby with a preferred embodiment, and attached drawing is coordinated to elaborate.
As shown in Figure 1, a kind of test device of fabric cooling function provided by the invention includes climatic chamber 1, experiment
Platform 2, host 3 and computer 4, wherein：
Experimental bench 2 is set in climatic chamber 1, and probe 8 is additionally provided in climatic chamber 1, and probe 8 is built-in for detecting perseverance
The temperature sensor one of temperature and the humidity sensor for detecting humidity in climatic chamber 1 in constant temperature and humidity case 1 are by refrigeration
Temperature in system 5 and 7 regulating thermostatic constant humidity cabinet 1 of heated for controlling temperature system, by the humidity in 6 regulating thermostatic constant humidity cabinet 1 of humidification system
Experimental bench 2 includes test board 9, positioned at the lower section of test board 9 and is close to the heating plate 10 of test board 9 and is centered around survey
Protection heat-insulating shield 11 around test plate (panel) 9 and heating plate 10, tested fabric 14 are covered on test board 9, test board 9 and tested fabric
Temperature sensor 2 12 is equipped between 14；
Silicon-controlled adjusting heater 15 and data collecting system 16 are equipped in host 3, silicon-controlled adjusting heater 15 is used
In with the firm power heating plate 10 of setting, data collecting system 16 is used for the temperature of real-time collecting temperature sensor 2 12
Degree；
Temperature sensor one, humidity sensor, refrigeration system 5, heated for controlling temperature system 7, humidification system 6, silicon-controlled adjusting
Heater 15, temperature sensor 2 12 are connect with computer 4.
The test method of fabric cooling function includes the following steps：
1. test prepares
Tested fabric 14 pre-processes.(a) dry state is tested：Tested fabric 14 is placed on standard atmosphere (relative humidity (65
± 1) %, temperature (20 ± 1) DEG C) thermostatic constant wet chamber balances 24 hours, and so that tested fabric 14 is reached the wet balance of heat；(b) hygrometric state is surveyed
Examination：Fabric to be measured, is then completely immersed in tertiary effluent to water absorption of fabrics and is saturated, use sieve by the quality m after the tested drying of fabric 14
Moisture is squeezed out the fabric after water suction to state of not dripping by certain pressure by drawing, and fabric is then placed on standard environment
Under to allow moisture evaporation to diffuse to fabric quality be m+10g, even if tested fabric 14 uniformly contains 10g water.
Test equipment debugging preheating.Setting 1 humiture of climatic chamber be standard environment humiture ((65 ± 1) %RH,
(20 ± 1) DEG C), 9 temperature of test board is 25 DEG C；To reduce the error of test equipment, 9 temperature of test board is risen into survey before testing
Cooling is preheated to 25 DEG C after examination final temperature.
2. test
After the completion of test equipment preheating, climatic chamber 1 is opened, tested fabric 14 is lain in a horizontal plane on test board 9, it is fast
Tested fabric 14 is clamped in speed, shuts climatic chamber 1.
Test equipment heat button is opened, test board 9 is heated with firm power, and acquires and is tested fabric 14 and test board
The data that 9 contact surface temperature change over time, when temperature rises to setting test temperature, test terminates.
3. data processing
Dry, hygrometric state heating data processing：
Dry state, the wet web surface temperature-time data recorded by data collecting system 16 are stored respectively.
Collected data per second are averaging processing：Wherein,For fabric surface in the i periods
Average temperature value, TijFor the fabric surface temperature of i period jth seconds, j=1,2......10；Dry state, hygrometric state heating curve arrive
Up to the time t needed for a certain specific temperatured、twLonger, heating rate is slower, and cooling function is better.
Dry, hygrometric state temperature difference data processing：
Calculate the temperature difference of each heating-up time section of dry state, hygrometric state, Ti=Tdi-Twi, wherein TiFor i moment dry state, wet web
Surface temperature difference, TdiFor i moment dry state fabric surface temperatures, TwiFor i moment wet web surface temperatures；Fabric dry and wet state is most
Big temperature difference TmaxBigger, quick-drying performance, hygrometric state cooling function are better.
Three pieces of fabrics are done respectively with the above test method, the test of hygrometric state heating rate, wherein hygrometric state test fabric
Aqueous 10g.T the time required to observation fabric is warming up to 40 DEG C from 25 DEG C of dry and wet statesdAnd tw, find out dry and wet state temperature difference maximum of Tmax,
The cooling function of overall merit fabric.
Following table is the real time temperature and dry and wet temp difference data every 30s in three kinds of fabric dry states, hygrometric state temperature-rise period：
The embodiment of the present invention described in detail above.It should be appreciated that the present embodiment is merely to illustrate the present invention and does not have to
In limiting the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art can be with
The present invention is made various changes or modifications, such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
Claims (3)
1. a kind of test device of fabric cooling function, it is characterised in that：Including climatic chamber (1), experimental bench (2), host
(3) and computer (4), wherein：
Experimental bench (2) is set in climatic chamber (1), and probe (8) is additionally provided in climatic chamber (1), and probe (8) is built-in to be used for
Detect the temperature sensor one of climatic chamber (1) interior temperature and the humidity sensor for detecting climatic chamber (1) interior humidity
Device is adjusted by the temperature in refrigeration system (5) and heated for controlling temperature system (7) regulating thermostatic constant humidity cabinet (1) by humidification system (6)
Humidity in climatic chamber (1)；
Experimental bench (2) includes test board (9), is located at below test board (9) and is close to the heating plate (10) of test board (9) and encloses
The protection heat-insulating shield (11) being wound on around test board (9) and heating plate (10), tested fabric (14) are covered on test board (9),
Temperature sensor two (12) is equipped between test board (9) and tested fabric (14)；
Silicon-controlled adjusting heater (15) and data collecting system (16), silicon-controlled adjusting heater are equipped in host (3)
(15) it is used for the firm power heating plate (10) of setting, data collecting system (16) is used for real-time collecting temperature sensor
The temperature of two (12)；
Temperature sensor one, humidity sensor, refrigeration system (5), heated for controlling temperature system (7), humidification system (6), thyristor regulating
Section heater (15), temperature sensor two (12) are connect with computer (4).
2. a kind of characterizing method of fabric cooling function, which is characterized in that include the following steps：
The first step：Fabric pretreatment to be measured
(a) dry state is tested：Tested fabric (14) is placed on to the constant-temperature constant-humidity environment inner equilibrium 24 hours of standard atmosphere, makes to knit
Object reaches the wet balance of heat；(b) hygrometric state is tested：Test is tested the quality m after fabric (14) drying, then that tested fabric (14) is complete
Complete immerse in tertiary effluent is saturated to water absorption of fabrics, with roller by the tested fabric (14) after water suction by certain pressure by moisture
It squeezes out to state of not dripping, then tested fabric (14) is placed under standard environment, moisture evaporation is allowed to diffuse to tested fabric
(14) quality is m+m1, even if tested water of the fabric (14) uniformly containing m1 mass, m1 can be set according to test fabric classification
It is fixed.
Second step：Test equipment debugging preheating
Set climatic chamber (1) to standard environment humiture, or according to the warm and humid of experiment demand setting climatic chamber (1)
Degree；By the temperature setting of test board (9) to initial temperature；
Third walks：Sample test
Climatic chamber (1) is opened, tested fabric (14) is lain in a horizontal plane on test board (9), fabric is pressed from both sides (13) folder rapidly
It holds, shuts climatic chamber (1), test board (9) are heated with firm power by silicon-controlled adjusting heater (15), and adopts
Collection is tested the data that fabric (14) is changed over time with test board (9) contact surface temperature and is surveyed when temperature rises to setting test temperature
Examination terminates；
4th step：Data processing
(a) it does, hygrometric state heating data processing：The dry state recorded by data collecting system (16), wet web surface are stored respectively
Temperature-time data；Collected data per second are averaging processing：Wherein,To be knitted in the i periods
Object shows face average temperature value, TijFor the fabric surface temperature of i period jth seconds, j=1,2......10；Dry state, hygrometric state liter
Warm curve reaches the time t needed for a certain specific temperatured、twLonger, heating rate is slower, and cooling function is better；
(b) it does, hygrometric state temperature difference data processing：Calculate the temperature difference of each heating-up time section of dry state, hygrometric state, Ti=Tdi-Twi, wherein Ti
For i moment dry state, wet web surface temperature difference, TdiFor i moment dry state fabric surface temperatures, TwiFor i moment wet web tables
Face temperature；Fabric dry and wet state maximum temperature difference TmaxBigger, quick-drying performance, hygrometric state cooling function are better.
3. a kind of characterizing method of fabric cooling function as claimed in claim 2, which is characterized in that in the second step,
To reduce the error of test equipment, it is cooled to just after the temperature of the test board (9) is risen to test final temperature before testing
Beginning temperature.
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| CN109632563A (en) * | 2019-01-09 | 2019-04-16 | 东华大学 | A kind of floatation type textile dissipates wet rate test device and method |
| CN113533417A (en) * | 2020-04-20 | 2021-10-22 | 广西壮族自治区建筑科学研究设计院 | Device and method for testing heat preservation effect of reflective heat insulation coating heat preservation daub composite heat preservation system |
| CN114994119A (en) * | 2022-08-03 | 2022-09-02 | 苏州中纺联检验技术服务有限公司 | Equipment and method for testing instantaneous contact cool feeling performance of textile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113533417A (en) * | 2020-04-20 | 2021-10-22 | 广西壮族自治区建筑科学研究设计院 | Device and method for testing heat preservation effect of reflective heat insulation coating heat preservation daub composite heat preservation system |
| CN114994119A (en) * | 2022-08-03 | 2022-09-02 | 苏州中纺联检验技术服务有限公司 | Equipment and method for testing instantaneous contact cool feeling performance of textile |
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