CN104897513A - Textile evaporation testing method - Google Patents
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Abstract
The invention discloses a textile evaporation testing method. Artificially simulated sweat is adopted to carry out an evaporation (weight loss) test under normal atmosphere in a specially made test box; the influences of temperature and humidity differences on the sample evaporation test is prevented because the test is carried out under specified temperature and humidity conditions; the whole test is carried out in the closed test box, and cooperates with a culture dish, after a certain period of time, the culture dish, the artificial sweat and a tested sample are weighed, the culture dish and the sample do not need to be moved, only the readings of scales need to be read, consequently, the influence of wind speed on the sample evaporation test is eliminated, and a final test result is accurate and reliable, the operability is high, the steps are simplified and are easy to control, and the textile evaporation testing method is easy to popularize for use in labs, and can be effectively applied to the evaporation testing of textiles.
Description
Technical field
The present invention relates to physical detection field, particularly relate to a kind of textile evaporation detection method.
Background technology
People require more and more higher to the functional of garment material and comfortableness, and moisture absorption, quick-drying performance are more and more subject to the favor of consumers in general.Namely wish that fabric has water suction (wetting) property and quick-drying, the gas how to be distributed by human body, liquid sweat discharge clothes as early as possible, are one of keys improving snugness of fit.
Sweat is transmitted to free surrounding space through fabric two kinds of forms: one is that sweat directly moves to outer space by fabric or interfibrous gap or capillary diffusion; Two be the steam of sweat by the micropore of fiber in fabric or condense into water at fiber surface, be delivered to fabric face through the capillarity in gap between the micropore or fiber of fiber, then be evaporated to free surrounding space.It can thus be appreciated that its process is water suction-water conservation-evaporation.
Composition mainly water and a small amount of sodium chloride, urea, lactic acid, the fatty acid etc. of research display sweat; The present invention is with reference to [AATCC 15 colour fastness to perspiration] method of testing, and use the chemicals configuration synthetic perspirations such as sodium chloride, lactic acid, sodium hydrogen phosphate and L-Histidine salt, simulated sweat evaporates in textile;
Current mainly water evaporates (weightlessness) method of method of testing (GB/T 21655.1-2008 " textile absorbing fast-drying evaluation Part I individual event composite test method ") of textile quick-drying, by a certain size sample through damping, be placed on electronic balance (precision is 0.001g) and weigh, gauge water drops on sample or sample is immersed in water, when water spreads completely on sample, weigh immediately, then by its naturally smooth suspension, its weight change is measured after certain hour, try to achieve the rate of evaporation of moisture content, calculate sample at each mean value taking the water evaporation quantity in moment, in fact, human sweat's velocity of evaporation, not only depends on fabric itself, and go back and ambient temperature, the condition such as humidity and wind speed is closely relevant.
Existing method of testing shortcoming:
1, during test, fabric is placed on smooth desktop, fabric frivolous or sparse time, water permeation, on desktop, causes the discharge reduction that actual participation is evaporated, can accurately the moisture evaporation rate of reaction surface material;
2, fabric constantly hangs in weighing process, and air flows, and affects evaporation rate;
3, the moisture on fabric is easily stained with on balance on goods and services, misoperation, moisture can be caused to reduce, affect evaporation rate.
Based on this, be necessary for the problems referred to above, find a kind of more accurately textile evaporation reliably detection method newly.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of new test result accurately reliable, workable, step simplify be easy to control textile evaporation detection method.
Dalton, according to sinuous flow diffusion theory, considers wind speed, air themperature, humidity to the impact of evaporation capacity, proposes daltion model, and this model serves conclusive effect to the foundation that evaporation in modern age is theoretical.
E＝(e
1-e
2)·φ(W) (1)
In formula: E-water surface evaporation; e
1-water surface vapour pressure; e
2certain altitude place ,-ground vapour pressure; φ (W)-function of wind speed.(1) formula illustrates: vapour pressure difference reflects the moist gradient on the humidity of evaporation surface and certain altitude.The layer knot effect of Yin Wendu directly has influence on moist gradient, so (e again
1-e
2) concentrated expression is wet, the effect of temperature two key elements.φ (W) reflects the dynamic action of vortex and the power of water-vapor exchange.
Based on above-mentioned theory basis, inventor thinks the impact must considering wind speed, temperature, so again through test of many times, finally determines that adopting manual simulation's sweat to carry out (weightlessness) method of evaporating in test box under normal atmosphere, special tests.
For realizing above-mentioned technical purpose, concrete technical scheme is as follows:
A kind of textile evaporation detection method, adopts evaporation (weightlessness) method, comprises following steps:
I, sample pretreatment
Accurate clip 3 pieces of square samples along direction, oblique angle, guarantee 3 pieces of samples not containing identical warp thread and weft yarn, then under stationary temperature and humidity, carry out damping to the sample got; For obtaining the most rational effect, as preferably, the length of side of square sample is 15cm, the sample got temperature be 21 ± 1 DEG C, humidity be the normal atmosphere of 65 ± 2% under damping 4 hours;
II, sweat preparation
In distilled water, add sodium chloride, lactic acid, sodium hydrogen phosphate and L-Histidine salt, use glass bar to stir and make to dissolve completely, obtained synthetic perspiration; Preferred sweat compound method, for add 10g sodium chloride, 1g lactic acid, 1g sodium hydrogen phosphate and 0.25g L-Histidine salt in 1L distilled water, uses glass bar to stir and makes to dissolve completely, uses PH to measure the pH value of solution, guarantees that pH value is 4.3 ± 0.2;
III, evaporation test
Adopt and test in the test box of sealing, keep test environment temperature, moisture constant in test box, and put into electronic scales in test box, double dish put by electronic scales; Described test box is determine special after inventor's test of many times, and preferred size is long 600mm wide 460mm height 210mm, and preferably keeps that test environment temperature in test box is 21 ± 1 DEG C, humidity is 65 ± 2%, and the preferred diameter of described double dish is 25cm;
Be placed in the middle of the double dish of test box inside by the test sample of step I process, in test box, the weight of precise double dish+sample, counts A, then shifts out sample;
Use transfer pipet, draw a certain amount of synthetic perspiration and be placed into double dish middle, as preferably, the synthetic perspiration's volume using pipette, extract is 1ml; Then be placed in double dish by test sample, guarantee sweat wetting test sample centre, guarantee first to touch synthetic perspiration with the one side of human contact, in the inherent test box of 5s, the weight of precise double dish+synthetic perspiration+sample, counts B;
At interval of a period of time, read in the weight of the double dish+synthetic perspiration+sample in test box, count Cx;
Test the rate of evaporation of sample when bringing following formulae discovery different time respectively into by the result of the Cx of repetitive measurement, get their mean value as final test sample rate of evaporation.
Rate of evaporation=100 ╳ (B-C)/(B-A) %
Through test of many times, find that the time interval chosen at interval of a period of time is 15min, get two times result continuously and can ensure accuracy in detection, therefore preferably concrete obtaining value method is after 15min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
1, after 30min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
2, be then with people's formula to calculate.
Because test sample is after repeatedly home washings, the performance of moisture absorption, quick-drying can change, production technology and Final finishing mode very large to moisture absorption, quick-drying performance impact, therefore the present invention test sample comprise test former state and washing sample, washing sample in described step I first with reference to the textile of washed 25 times of the washing procedure of AATCC 135, concrete mode of washing is: machine-washing, water temperature 40 DEG C, drying mode: low temperature roller is dried.
The advantage of this detection method is:
1, test under the temperature of specifying, damp condition, just avoid the impact that temperature and humidity difference is tested sample evaporation.
2, whole test completes in airtight test box, and coordinate double dish, weigh the weight of double dish, synthetic perspiration and test sample after 15min and 30min, do not need mobile double dish and sample, only need the registration reading balance, so just wind speed is got rid of the impact that sample evaporation is tested.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
A kind of textile evaporation detection method, adopts evaporation (weightlessness) method, comprises following steps:
I, sample pretreatment
Along direction, oblique angle, accurate clip 3 pieces of length of sides are the square sample of 15cm, guarantee 3 pieces of samples not containing identical warp thread and weft yarn; The sample got temperature be 21 ± 1 DEG C, humidity be the normal atmosphere of 65 ± 2% under damping 4 hours;
II, sweat preparation
In 1L distilled water, add 10g sodium chloride, 1g lactic acid, 1g sodium hydrogen phosphate and 0.25g L-Histidine salt, use glass bar to stir and make to dissolve completely, use PH to measure the pH value of solution, guarantee that pH value is 4.3 ± 0.2;
III, evaporation test
Adopt and test in the test box of sealing, keep that test environment temperature in test box is 21 ± 1 DEG C, humidity is 65 ± 2%,
Be placed in the middle of the double dish being placed on test box inside that diameter is 25cm by the test sample of step I process, in test box, the weight of precise double dish+sample, counts A, then shifts out sample;
Use transfer pipet, draw 1ml synthetic perspiration and be placed into double dish middle, test sample is placed in double dish, guarantee sweat wetting test sample centre, guarantee first to touch synthetic perspiration with the one side of human contact, in the inherent test box of 5s, the weight of precise double dish+synthetic perspiration+sample, counts B;
After 15min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
1;
After 30min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
2;
With the C measured
1, C
2the rate of evaporation of result test sample when bringing following formulae discovery different time respectively into, get their mean value as final test sample rate of evaporation.Rate of evaporation=100 ╳ (B-C)/(B-A) %
One piece of grey polyester fabric, under rate of evaporation test and data are shown in:
The sample chosen in described step I is test former state and washing sample, and washing sample is first with reference to the textile of washed 25 times of the washing procedure of AATCC135, and concrete mode of washing is: machine-washing, water temperature 40 DEG C, drying mode: low temperature roller is dried.
The test box used is of a size of long 600mm wide 460mm height 210mm.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. a textile evaporation detection method, is characterized in that, adopts evaporation method, comprises following steps:
I, sample pretreatment
Accurate clip 3 pieces of square samples along direction, oblique angle, guarantee 3 pieces of samples not containing identical warp thread and weft yarn, then under stationary temperature and humidity, carry out damping to the sample got;
II, sweat preparation
In distilled water, add sodium chloride, lactic acid, sodium hydrogen phosphate and L-Histidine salt, use glass bar to stir and make to dissolve completely, obtained synthetic perspiration;
III, evaporation test
Adopt and test in the test box of sealing, keep test environment temperature, moisture constant in test box, and put into electronic scales in test box, double dish put by electronic scales;
Be placed on by the test sample of step I process in the middle of the double dish being positioned over test box inside, in test box, the weight of precise double dish+sample, counts A, then shifts out sample;
Use transfer pipet, draw a certain amount of synthetic perspiration and be placed into double dish middle, then test sample is placed in double dish, guarantee sweat wetting test sample centre, guarantee first to touch synthetic perspiration with the one side of human contact, in the inherent test box of 5s, the weight of precise double dish+synthetic perspiration+sample, counts B;
At interval of a period of time, read in the weight of the double dish+synthetic perspiration+sample in test box, count Cx;
Test the rate of evaporation of sample when bringing following formulae discovery different time respectively into by the result of the Cx of repetitive measurement, get their mean value as final test sample rate of evaporation.
Rate of evaporation=100 ╳ (B-C)/(B-A) %.
2. textile evaporation detection method according to claim 1, it is characterized in that, in described step I, the length of side of square sample is 15cm.
3. textile evaporation detection method according to claim 1, it is characterized in that, in described step I, sample damping temperature is 21 ± 1 DEG C, and humidity is 65 ± 2%, and environment is standard atmospheric pressure, and the damping time is 4 hours.
4. textile evaporation detection method according to claim 1, it is characterized in that, the sample chosen in described step I is test former state and washing sample, washing sample is first with reference to the textile of washed 25 times of the washing procedure of AATCC 135, concrete mode of washing is: machine-washing, water temperature 40 DEG C, drying mode: low temperature roller is dried.
5. textile evaporation detection method according to claim 1, it is characterized in that, in described step II, the concrete method for making of sweat is: in 1L distilled water, add 10g sodium chloride, 1g lactic acid, 1g sodium hydrogen phosphate and 0.25g L-Histidine salt, use glass bar to stir to make to dissolve completely, use PH to measure the pH value of solution, guarantee that pH value is 4.3 ± 0.2.
6. the textile evaporation detection method according to right 1, it is characterized in that, the test box used in described step III is of a size of long 600mm, wide 460mm, high 210mm.
7. the textile evaporation detection method according to right 1, it is characterized in that, in described step III, in test box, test environment temperature is 21 ± 1 DEG C, humidity is 65 ± 2%.
8. the textile evaporation detection method according to right 1, it is characterized in that, the diameter of the double dish used in described step III is 25cm.
9. the textile evaporation detection method according to right 1, it is characterized in that, the synthetic perspiration's volume using pipette, extract in described step III is 1ml.
10. the textile evaporation detection method according to right 1, it is characterized in that, be 15min at interval of the time interval of a period of time in described step III, get two times result continuously, namely, after 15min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
1, after 30min, read in the weight of the double dish+synthetic perspiration+sample in test box, count C
2.
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Cited By (13)
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| CN106918530A (en) * | 2017-03-06 | 2017-07-04 | 厦门安踏体育用品有限公司 | A kind of method for detecting fabric moisture evaporation speed |
| CN106970018A (en) * | 2017-03-29 | 2017-07-21 | 江西联创宏声万安电子有限公司 | The method of testing and device of the anti-sweat performance of wearable electronic |
| CN107340200A (en) * | 2017-03-06 | 2017-11-10 | 厦门安踏体育用品有限公司 | A kind of method for detecting fabric water imbibition |
| CN107655779A (en) * | 2017-08-23 | 2018-02-02 | 中国科学院上海硅酸盐研究所 | Salt crystalline stress measuring instrument |
| CN107843547A (en) * | 2017-12-22 | 2018-03-27 | 鲁丰织染有限公司 | The method for detecting textile formaldehyde aging |
| CN108226439A (en) * | 2017-12-22 | 2018-06-29 | 苏州瑞奇丽新材料有限公司 | A kind of synthetic perspiration and preparation method thereof |
| CN109187523A (en) * | 2018-09-03 | 2019-01-11 | 必维申优质量技术服务江苏有限公司 | Textile chlorinated water resist novel detection method |
| 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 |
| CN112255135A (en) * | 2020-09-30 | 2021-01-22 | 华中科技大学 | Device and method for testing liquid film evaporation power |
| CN114112777A (en) * | 2021-12-13 | 2022-03-01 | 必维申优质量技术服务江苏有限公司 | Method for detecting moisture absorption and sweat releasing performance of textile |
| CN116183467A (en) * | 2023-05-04 | 2023-05-30 | 苏州太湖雪丝绸股份有限公司 | Textile comprehensive detection rating system and rating method thereof |
| CN116183434A (en) * | 2023-05-05 | 2023-05-30 | 苏州市纤维检验院 | Automatic weighing method for water evaporation rate |
| US11788918B2 (en) | 2020-06-18 | 2023-10-17 | Trevillyan Labs, Llc | Fluid detection fabric |
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| CN107340200A (en) * | 2017-03-06 | 2017-11-10 | 厦门安踏体育用品有限公司 | A kind of method for detecting fabric water imbibition |
| CN106918530A (en) * | 2017-03-06 | 2017-07-04 | 厦门安踏体育用品有限公司 | A kind of method for detecting fabric moisture evaporation speed |
| CN106970018A (en) * | 2017-03-29 | 2017-07-21 | 江西联创宏声万安电子有限公司 | The method of testing and device of the anti-sweat performance of wearable electronic |
| CN107655779A (en) * | 2017-08-23 | 2018-02-02 | 中国科学院上海硅酸盐研究所 | Salt crystalline stress measuring instrument |
| CN107843547A (en) * | 2017-12-22 | 2018-03-27 | 鲁丰织染有限公司 | The method for detecting textile formaldehyde aging |
| CN108226439A (en) * | 2017-12-22 | 2018-06-29 | 苏州瑞奇丽新材料有限公司 | A kind of synthetic perspiration and preparation method thereof |
| CN109187523A (en) * | 2018-09-03 | 2019-01-11 | 必维申优质量技术服务江苏有限公司 | Textile chlorinated water resist novel detection method |
| 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 |
| CN109632563B (en) * | 2019-01-09 | 2021-11-19 | 东华大学 | Floating type textile moisture dissipation rate testing device and method |
| US11788918B2 (en) | 2020-06-18 | 2023-10-17 | Trevillyan Labs, Llc | Fluid detection fabric |
| CN112255135A (en) * | 2020-09-30 | 2021-01-22 | 华中科技大学 | Device and method for testing liquid film evaporation power |
| CN114112777A (en) * | 2021-12-13 | 2022-03-01 | 必维申优质量技术服务江苏有限公司 | Method for detecting moisture absorption and sweat releasing performance of textile |
| CN116183467A (en) * | 2023-05-04 | 2023-05-30 | 苏州太湖雪丝绸股份有限公司 | Textile comprehensive detection rating system and rating method thereof |
| CN116183467B (en) * | 2023-05-04 | 2023-06-27 | 苏州太湖雪丝绸股份有限公司 | Textile comprehensive detection rating system and rating method thereof |
| CN116183434A (en) * | 2023-05-05 | 2023-05-30 | 苏州市纤维检验院 | Automatic weighing method for water evaporation rate |
| CN116183434B (en) * | 2023-05-05 | 2023-08-08 | 苏州市纤维检验院 | Automatic weighing method for water evaporation rate |
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