CN105842103A - Tobacco moisture retention performance test method - Google Patents
Tobacco moisture retention performance test method Download PDFInfo
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- CN105842103A CN105842103A CN201610160015.3A CN201610160015A CN105842103A CN 105842103 A CN105842103 A CN 105842103A CN 201610160015 A CN201610160015 A CN 201610160015A CN 105842103 A CN105842103 A CN 105842103A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
Abstract
The invention provides a tobacco moisture retention performance test method which comprises the steps of sample preprocessing, sample weight dynamic testing and data acquisition, dry base moisture rate calculation and moisture loss curve drawing, moisture ratio calculation and data fitting, and calculation of the moisture retention index and the average moisture loss rate or calculation of the average moisture loss rate at specific moisture ratio and the moisture retention index. The invention provides the tobacco moisture retention performance test and evaluation method which is used for solving the problems in the prior art that the tobacco shred moisture retention performance cannot be rapidly, simply, accurately and comprehensively tested and evaluated. Based on a fact that the tobacco physical moisture retention performance has relatively strong correlation with thermodynamics and kinetics indexes, the moisture retention evaluation method takes thermodynamic and kinetic indexes into account simultaneously, so that the tobacco physical moisture retention performance is more comprehensively and scientifically evaluated.
Description
Technical field
The present invention relates to Field of Tobacco, specifically disclose the method for testing of a kind of humid keeping performance of tobacco.
Background technology
The humid keeping performance of Medicated cigarette is in close relations with cigarette quality, and improving Medicated cigarette physics humid keeping performance is to improve Medicated cigarette sense organ to relax
One of important channel of appropriateness.During Medicated cigarette humectation is studied, the most quickly, easy, accurately to tobacco shred humid keeping performance
Carry out test and evaluation and become the problem needing solution badly.2008, Hu Jun et al. invented the side that tobacco moisture percentage is measured continuously
Method and device thereof, utilize this device can be continuously monitored tobacco moisture percentage, thus compares different humectant humid keeping performances
Difference.What Bao Jiang in 2009 et al. has invented tobacco moisture percentage test glove box, measures tobacco shred and initiates moisture content；At constant temperature and humidity
The glove box of environment is measured tobacco shred weight and change thereof；Measured value is carried out record, according to initial moisture content and example weight
Change release tobacco shred instant moisture content, form the data point of a series of tobacco shred instant moisture content relative time；Make tobacco shred
Instant moisture content time graph, according to slope and the contrast of the equilibrium moisture content in later stage of the early stage of this curve, compares Nicotiana tabacum L. and protects
Profit agent humectation effect nuance.2011, Wu Da et al. utilized dynamic water adsorption analysis systematic study tobacco shred at dry ring
The dynamic law of moisture loss in border, draw moisture in cut tobacco scatter and disappear early stage moisture content of drying base and the square root of time between deposit
At preferable linear dependence, by t tobacco shred moisture content of drying base MtValue is to t0.5Make rectilinear, from the slope of gained straight line
Obtain rate constants k value, and in this, as the foundation of test humid keeping performance of tobacco, can be used for investigating tobacco humectant performance and cigarette
Grass humectant screening etc..2013, Hu Jun et al. disclosed a kind of method evaluating humid keeping performance of tobacco, utilizes tobacco moisture percentage
Measurement apparatus is measured tobacco sample tobacco shred weight in constant environment and is gone forward side by side over time line nonlinearity matching, by kinetics
Index i.e. solves the average rate-of-loss of coolant value of wet (moisture absorption) as the foundation evaluating tobacco sample humid keeping performance.
Medicated cigarette physics humid keeping performance can be divided into two aspects of thermodynamics and kinetics.In Thermodynamic Criteria in sector application relatively
For being " equilibrium moisture content " widely, it is key factor and the basis affecting Medicated cigarette physics humid keeping performance, is Medicated cigarette dehydration
Endogenous cause of ill, reflects the inherent moisture holding capacity of Medicated cigarette.Dynamics index is mainly Medicated cigarette moisture loss speed or half-life, and it is thing
Reason humid keeping performance the most directly embodies.In dry area, if cigarette moisture declines too fast, quickly become dry, easily disappeared
Expense person causes the impression that humid keeping performance is not good enough.Therefore, investigate Nicotiana tabacum L. physics humid keeping performance and should take into account thermodynamics and kinetics simultaneously
Index.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that the new test side of a kind of humid keeping performance of tobacco
Method, overcomes in prior art the test and evaluation to humid keeping performance of tobacco can not take into account the defect of thermodynamics and kinetics.
In order to realize object above and other purposes, the present invention is by including that techniques below scheme realizes:
The invention discloses a kind of humid keeping performance of tobacco method of testing, comprise the following steps:
1) sample pre-treatments: Nicotiana tabacum L. will be weighed and as sample and balance 48～72h；
2) example weight dynamic test and data acquisition: sample is placed in Medicated cigarette humectation test equipment, the temperature of equipment
With relative humidity set to presumptive test value, being continually changing of t weighs sample quality m in time, and records result；
3) moisture content of drying base calculates and dehydration curve plotting: according to the data of sample quality m t in time change, uses baking oven
Method obtains butt quality m of sampleDryAnd calculate moisture content of drying base q, draw sample moisture content of drying base q t change curve in time；Its
In,mtFor the quality of sample, m after baking time t in an ovenDryQuality after drying for sample；
4) moisture is than calculating and data matching: moisture during calculating acquisition t is than MR, whereinIts
In, qtFor the moisture content of drying base that t is corresponding, q0For initial moisture content of drying base, qeFor final moisture content of drying base；
5) data matching with specific moisture than lower corresponding time tMRCalculate: moisture corresponding for time t is compared MRtSubstitute into MR
=exp (-ktd) matching in equation, obtain constant k and d；And according to formulaCalculate specific moisture more right than lower
The time answered；
6) average percentage of water loss v or specific moisture than under average rate-of-loss of coolant vMR:
Wherein, k and d is constant, t0For initial time section, t is the t time
Section, q0Moisture content of drying base for initial time；qeFor final moisture content of drying base；
q0Moisture content of drying base for initial time；qeFor final moisture content of drying base, tMRFor
Reach the time period that moisture is more corresponding than MR；
7) calculating of humectation index M RI:OrOrWhereinFor
The t of several same sampleMRMeansigma methods,Q for several same sampleeMeansigma methods,V flat for several same sample
Average.
Preferably, step 1) in the temperature of balance be 20～25 DEG C, equilibrium humidity is 55～65%.
Preferably, step 1) in balance be to carry out in standard environment, standard environment is RH=60%, T=22 DEG C.
Preferably, step 2) described in Medicated cigarette humectation test equipment be dynamic water analyze system DVS, tobacco moisture percentage survey
Trial work casing or dynamic water analyze the one in climate box.
Preferably, step 2) in the temperature of equipment be 20～25 DEG C；Equipment humidity is 30～40%；The number of described data
At least 50.
Step 3) described in Oven Method be to use prior art is tested in tobacco business the baking oven that moisture content of drying base is conventional
Method is tested, and wherein, in Oven Method, oven temperature is 100 DEG C, and drying time is 2h.
Preferably, step 6) in tMRBe MR be the time corresponding to 0.367 or 0.5.
Preferably, described step 6) described in vMRBe MR be the average rate-of-loss of coolant corresponding to 0.367 or 0.5.
Preferably, step 7) in, described humectation indexOrOr It is average rate-of-loss of coolant corresponding when being 0.367 for MR,It it is average rate-of-loss of coolant corresponding when being 0.5 for MR.
The invention also discloses the method as described above purposes on test humid keeping performance of tobacco.
As it has been described above, humid keeping performance of tobacco method of testing of the present invention, have the advantages that
This humid keeping performance of tobacco test and evaluation method, it is achieved that reduce test period to greatest extent, decrease centre
Link and manual operation error, substantially increase automaticity, and have employed degree of fitting more preferable drying model PAGE equation
Carrying out data process, devise and can directly characterize the humectation index that Nicotiana tabacum L. physics humid keeping performance is good and bad, this index is taken into account simultaneously
Affect kinetic factor and the Thermodynamics of humid keeping performance, compare current industry with single index to evaluate humid keeping performance of tobacco
More science is with comprehensively, and this evaluation index is applicable to the test data of all kinds of humectation test equipment.The method is in current industry
Main flow humectation tests equipment such as: dynamic water analyzes system DVS, tobacco moisture percentage test glove box, dynamic water analysis weather
Casees etc. are the most applicable.Humectation index is the biggest, and humid keeping performance is the best.
The present invention provides a kind of humid keeping performance of tobacco test and evaluation method, is used for solving that prior art lacks energy fast
Fast, easy, precisely, all sidedly tobacco shred humid keeping performance to be carried out test and evaluation problem.Physics humid keeping performance in view of Nicotiana tabacum L.
All there are stronger dependency, humectation evaluation methodology to take into account thermodynamics and kinetics index with thermodynamics, dynamics index simultaneously, from
And more fully and scientifically to Nicotiana tabacum L. physics humid keeping performance be evaluated.
Humid keeping performance of tobacco test and evaluation method disclosed in the present invention overcome many disadvantages of the prior art and
Creative.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of humid keeping performance of tobacco evaluation methodology of the present invention.
Fig. 2 is the moisture content of drying base time dependent dehydration curve chart in the embodiment of the present invention 1 method.
Fig. 3 is the moisture content of drying base time dependent dehydration curve chart of tobacco sample in embodiment 2 method in the present invention.
Fig. 4 is the moisture content of drying base time dependent dehydration curve chart of tobacco sample in the embodiment of the present invention 3 method.
Fig. 5 is the moisture content of drying base time dependent dehydration curve chart of tobacco sample in the embodiment of the present invention 4 method.
Detailed description of the invention
The present invention is expanded on further below in conjunction with embodiment.Should be understood that embodiment is merely to illustrate the present invention, and unrestricted
The scope of the present invention.
Refer to Fig. 1 to Fig. 5.It should be noted that the diagram provided in the present embodiment illustrates this most in a schematic way
The basic conception of invention, the most graphic in package count time only display with relevant assembly in the present invention rather than is implemented according to reality
Mesh, shape and size are drawn, and during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its
Assembly layout kenel is likely to increasingly complex.
As it is shown in figure 1, humid keeping performance of tobacco evaluation methodology of the present invention, comprise the following steps:
1) weigh a certain amount of tobacco sample to be positioned in the planchet of known quality；Wherein, the Functionality, quality and appealing design of tobacco sample
Electing 1.0000g～20.0000g as, and be preferably 22 DEG C ± 1 DEG C under standard environment, relative humidity is 60% ± 1% balance 48
～72h；
2) by the ambient temperature in humectation test equipment and relative humidity set to presumptive test value, change the most in time
Change quality m weighing tobacco samplet, time interval is preferably 0 second～300 seconds, and records each weighing result, is accurate to
0.0001g, obtains tobacco sample quality corresponding for time t, sample quality unit be the unit of g, t be min；
3) derive the delta data of sample quality m t in time in humectation test equipment, use Oven Method to record Nicotiana tabacum L. sample
Weight m of product, calculates moisture content of drying base q, moisture content of drying basemtFor the quality of t sample, mDry
Quality after drying for sample, obtains the moisture content of drying base data over time of sample and draws dehydration curve chart.Quality m
Unit be g, the unit of moisture content of drying base q is %, and the unit of time t is min；
4) according to step 3) moisture that records, it is calculated moisture ratio corresponding for time tWherein qtFor
The moisture content of drying base that time t is corresponding, q0For initial moisture content of drying base, qeFor final moisture content of drying base, unit is %；
5) carry out models fitting investigation by lot of experimental data, find that moisture more meets PAGE side than the relation with the time
Journey MR=exp (-ktd), data are fitted and try to achieve reach specify moisture than the corresponding timetMR
The biggest, the dehydration of tobacco sample is the slowest, tMRThe least, the dehydration of tobacco sample is the fastest；
6) by k, d, q0And qeValue substitutes intoOrIn, obtain spy
Fixing time or average rate-of-loss of coolant v of tobacco sample under dedicated half-life, v is the biggest, and the dehydration of tobacco sample is the fastest, and v is the least,
The dehydration of tobacco sample is the slowest；
7) by 5) the dynamics index t that obtainsMROr 6) average rate-of-loss of coolant v of dynamics index that obtains and Thermodynamic Criteria
qeIt is added after normalization respectively and obtains humectation index (MRI).Wherein, average rate-of-loss of coolant and humid keeping performance are negative correlation, therefore should
Adding negative sign before Xiang, humectation index is the biggest, and humid keeping performance is the best.
OrOr
This humid keeping performance of tobacco method of testing utilizes the humectation test equipment research tobacco shred that can arrange temperature and relative humidity
The dynamic law of moisture loss in dry environment, result shows that the moisture in moisture in cut tobacco dispersion process is than the pass with the time
System meets PAGE equation, is fitted obtaining corresponding parameter by data with the equation, calculates the average mistake under dedicated half-life
Water speed is as evaluation index, and final moisture content of drying base is as another evaluation index, by two indices normalization and be added
To humectation index.This method is suitable for all kinds of humectation test equipment, the most scientific and reasonable compared to tradition evaluation methodology result.
The specific embodiment of above-mentioned humid keeping performance of tobacco method of testing is as follows.
Embodiment 1
1) preparation of samples: weigh 12g tobacco sample respectively and be placed in the planchet of known quality, the title of tobacco sample and
Sequence number is as shown in table 1；
Table 1 tobacco sample title table
| Sequence number | Tobacco sample title |
| 1 | Cut tobacco 1 |
| 2 | Cut tobacco 2 |
| 3 | Cut tobacco 3 |
| 4 | Swollen silk 1 |
| 5 | Swollen silk 2 |
| 6 | Swollen silk 3 |
| 7 | Stem 1 |
| 8 | Stem 2 |
| 9 | Stem 3 |
2) tobacco sample balances 48 hours in standard environment；Described standard environment is RH=60%, T=22 DEG C；
3) moisture content of drying base dynamic test: preset dynamic water and analyze in climate box the temperature of air ambient with relative
Humidity 22 DEG C and 40% respectively, and set every 20s sample quality of record, quality is accurate to 0.0001g；It is sequentially placed into 9
Bring into operation after tobacco sample, run and be automatically stopped to 15h, obtain tobacco sample quality m corresponding for time tt；Oven Method obtains
To moisture content of drying base q corresponding for sample time tt, the moisture content of drying base q of tobacco sampletHomologous thread such as Fig. 2 institute with time t
Show；
4) data calculate: calculate the moisture ratio in each moment and carry out PAGE equation MR=exp (-ktd) matching, try to achieve k,
The value of d, substitutes into PAGE Equation for Calculating each sample at the time t corresponding to MR=0.3670.367, and do according to the final of each sample
Base moisture content, calculates 9 sample water proportions by subtraction respectively and is down to the time needed for 0.367 and the meansigma methods of final moisture content of drying base,
Substitute intoIt is calculated the humectation index of each sample.
Table 23 grows tobacco sample average rate-of-loss of coolant, final moisture content of drying base and humectation index
Shown by table 2 data, cut tobacco, swollen silk and stem under RH=40% dry environment corresponding to MR=0.367 time
Between be respectively 94.17min, 66.09min and 63.63min (3 Duplicate Samples are averaged, lower with).Cut tobacco, swollen silk and stem are
Whole moisture content of drying base difference 8.95%, 8.82% and 9.93%.Finally being calculated respective humectation index cut tobacco is 2.23, swollen
Silk is 1.84, and stem is 1.93, and the relative standard deviation between Duplicate Samples is less.Therefore, the humid keeping performance of cut tobacco is best, secondly
For stem and swollen silk.
Embodiment 2
1) preparation of samples: weigh 1g tobacco shred blank control sample respectively and the different humectant of interpolation obtains tobacco sample and is placed in
Knowing in the planchet of quality and test one by one, title and the sequence number of tobacco sample are as shown in table 3；
Table 3 tobacco sample title table
| Sequence number | Tobacco sample title |
| 1 | Tobacco shred blank |
| 2 | Tobacco shred+humectant 1 |
| 3 | Tobacco shred+humectant 2 |
| 4 | Tobacco shred+humectant 3 |
2) tobacco sample balances 48 hours in standard environment；Described standard environment is RH=60%, T=22 DEG C.
3) moisture content of drying base dynamic test: set dynamic water tester (DVS) temperature and relative humidity respectively 22 DEG C and
30%, do not have 1min to record a sample quality, quality is accurate to 0.000001g, is automatically stopped entrance and dries journey after running 15h
Sequence, obtains tobacco sample quality m corresponding for time ttAnd final mass i.e. butt weight mDry；Butt corresponding for calculating time t contains
Water rate qt, the moisture content of drying base q of tobacco sampletWith the homologous thread of time t as shown in Figure 3；
4) data calculate: calculate the moisture ratio in each moment and carry out PAGE equation MR=exp (-ktd) matching, try to achieve k, d
Value, substitutes into PAGE Equation for Calculating each sample at the time t corresponding to MR=0.3670.367, byObtain
Moisture is down to the average rate-of-loss of coolant during 0.367 than by 1, and according to the final moisture content of drying base of each sample, calculates 4 respectively
Meansigma methods v of sample average rate-of-loss of coolant and the meansigma methods of final moisture content of drying baseSubstitute intoCalculate
Obtain the humectation index of each sample.
44 kinds of tobacco sample v of table0.367, final moisture content of drying base and humectation index
Being shown by table 4 data, the humid keeping performance of tobacco shred is all had castering action, 3 kinds of humectants all to have at low humidity by humectant
Environment slows down rate-of-loss of coolant, and improves the effect of final moisture content of drying base, the wherein humectation best results of humectant 2.
Embodiment 3
1) preparation of samples: weigh 10g stem blank sample respectively and with the addition of the stem sample of humectant and be placed in known
In the planchet of quality, title and the sequence number of tobacco sample are as shown in table 5；；
Table 5 tobacco sample title table
| Sequence number | Tobacco sample title |
| 1 | Stem blank |
| 2 | Stem+humectant 1 |
| 3 | Stem+humectant 2 |
| 4 | Stem+humectant 3 |
2) tobacco sample balances 48 hours in standard environment；
3) moisture content of drying base dynamic test: preset the temperature of climate box air ambient and relative humidity respectively 22 DEG C and
40%, and set every 20s sample quality of record, quality is accurate to 0.0001g；Start after being sequentially placed into 4 tobacco samples
Run, run and be automatically stopped to 48h, obtain tobacco sample quality m corresponding for time tt；Oven Method obtains sample time t pair
The moisture content of drying base q answeredt, the moisture content of drying base q of tobacco sampletWith the homologous thread of time t as shown in Figure 4；
4) data calculate: calculate the moisture ratio in each moment and carry out PAGE equation MR=exp (-ktd) matching, try to achieve k,
The value of d, substitutes into PAGE Equation for Calculating each sample at the time t corresponding to MR=0.50.5, byObtain
Moisture is down to the average rate-of-loss of coolant during 0.5 than by 1, and according to the final moisture content of drying base of each sample, calculates 4 samples respectively
The meansigma methods of the average rate-of-loss of coolant of productAnd the meansigma methods of final moisture content of drying baseSubstitute intoCalculate
Humectation index to each sample.
64 kinds of stem sample v of table0.5, final moisture content of drying base and humectation index
Table 6 data show, the humid keeping performance of stem is all had castering action, 3 kinds of humectants all to have at low humidity ring by humectant
Slowing down the effect of rate-of-loss of coolant in border, wherein humectant 1 and humectant 2 have an effect improving moisture content of drying base, and humectant 3
Humectation most pronounced effects.
Embodiment 4
1) preparation of samples: take 16 finished cigarettes and tear tobacco shred (a～j) open and tile afterwards in the planchet being placed in known quality；
2) tobacco sample balances 48 hours in standard environment；
3) moisture content of drying base dynamic test: preset the temperature of climate box air ambient and relative humidity respectively 22 DEG C and
40%, and set every 20s sample quality of record, quality is accurate to 0.0001g；Start after being sequentially placed into 10 tobacco samples
Run, run and be automatically stopped to 48h, obtain tobacco sample quality m corresponding for time tt；Oven Method obtains sample time t pair
The moisture content of drying base q answeredt, the moisture content of drying base q of tobacco sampletWith the homologous thread of time t as shown in Figure 5；
4) data calculate: calculate the moisture ratio in each moment and carry out PAGE equation MR=exp (-ktd) matching, try to achieve k,
The value of d, by k, d, q0, qeValue substitute intoIn, the average dehydration speed of 90min before calculating sample
Rate v, and according to the final moisture content of drying base of each sample, the meansigma methods of the average rate-of-loss of coolant of 90min before 10 samples of calculating respectivelyAnd the meansigma methods of final moisture content of drying baseSubstitute intoThe humectation being calculated each sample refers to
Number.
7 10 kinds of cigarette rags sample v of table90min, final moisture content of drying base and humectation index go
By table 7 data, the humectation index of 10 cigarette rags samples is ranked up from high to low, its humid keeping performance
Have excellent to bad for d, j, c, g, h, f, b, a, i, e.
In sum, humid keeping performance of tobacco evaluation methodology of the present invention, combined by index big to thermodynamics and dynamics two
Close to consider to devise and can directly characterize the humectation index that humid keeping performance is good and bad, science and directly perceived, applied widely.
The above, only presently preferred embodiments of the present invention, not any formal and substantial to present invention restriction,
It should be pointed out that, for those skilled in the art, on the premise of without departing from the inventive method, also can make
Some improvement and supplement, these improve and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, make when available disclosed above technology contents a little more
The equivalent variations moved, modify and develop, is the Equivalent embodiments of the present invention；Meanwhile, all substantial technological pair according to the present invention
The change of any equivalent variations that above-described embodiment is made, modify and develop, all still fall within the scope of technical scheme
In.
Claims (8)
1. a humid keeping performance of tobacco method of testing, comprises the following steps:
1) sample pre-treatments: Nicotiana tabacum L. will be weighed and as sample and balance 48～72h；
2) example weight dynamic test and data acquisition: sample is placed in Medicated cigarette humectation test equipment, the temperature of equipment and phase
To humidity set to presumptive test value, being continually changing of t weighs sample quality m in time, and records result；
3) moisture content of drying base calculates and dehydration curve plotting: according to the data of sample quality m t in time change, uses Oven Method
Obtain butt quality m of sampleDryAnd calculating moisture content of drying base q, the dehydration drawing sample moisture content of drying base q t in time change is bent
Line；Wherein,Mt is the quality of sample, m after baking time t in an ovenDryAfter drying for sample
Quality；
4) moisture is than calculating: moisture during calculating acquisition t is than MR, whereinWherein, qtFor t pair
The moisture content of drying base answered, q0For initial moisture content of drying base, qeFor final moisture content of drying base；
5) data matching with specific moisture than lower corresponding time tMRCalculating: moisture corresponding for time t is substituted into MR=than MR
exp(-ktd) matching in equation, obtain constant k and d, and according to formulaCalculate specific moisture than lower correspondence
Time；
6) average percentage of water loss v or specific moisture than under average rate-of-loss of coolant vMR:
Wherein, k and d is constant, t0For initial time section, t is the t time period, q0
Moisture content of drying base for initial time；qeFor final moisture content of drying base；
q0Moisture content of drying base for initial time；qeFor final moisture content of drying base, tMRFor reaching
The time period that moisture is more corresponding than MR；
7) calculating of humectation index M RI:OrOrWhereinFor several phases
T with sampleMRMeansigma methods,Q for several same sampleeMeansigma methods,Meansigma methods for the v of several same sample.
2. as claimed in claim 1 method, it is characterised in that: step 1) in the temperature of balance be 20～25 DEG C, equilibrium humidity is
55～65%.
3. as claimed in claim 1 method, it is characterised in that: step 2) described in Medicated cigarette humectation test equipment be that dynamic water is divided
Analysis system DVS, tobacco moisture percentage test glove box or dynamic water analyze the one in climate box.
4. as claimed in claim 1 method, it is characterised in that: step 2) in the temperature of equipment be 20～25 DEG C；Equipment humidity is
30～40%；The number of described data is at least 50.
5. as claimed in claim 1 method, it is characterised in that: step 6) in tMRBe MR be corresponding to 0.367 or 0.5 time
Between.
6. as claimed in claim 1 method, it is characterised in that: described step 6) described in vMRBe MR be corresponding to 0.367 or 0.5
Average rate-of-loss of coolant.
7. method as claimed in claim 1, it is characterised in that: step 7) in, described humectation indexOrOr It is average rate-of-loss of coolant corresponding when being 0.367 for MR,Be MR be 0.5
Time corresponding average rate-of-loss of coolant.
8. the purposes on test humid keeping performance of tobacco of the method as described in as arbitrary in claim 1～7.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107490658A (en) * | 2017-09-11 | 2017-12-19 | 云南中烟工业有限责任公司 | A kind of evaluation method of cigarette humid keeping performance |
| CN111189974A (en) * | 2020-01-07 | 2020-05-22 | 云南中烟工业有限责任公司 | Method for evaluating moisture-proof and moisture-retaining performance of package |
| CN111474290A (en) * | 2020-04-29 | 2020-07-31 | 上海烟草集团有限责任公司 | Method for measuring protein content in tobacco |
| CN112989554A (en) * | 2020-12-31 | 2021-06-18 | 北京石油化工学院 | Method, device and equipment for acquiring moisture content ratio of agricultural products based on different drying stages |
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| CN111474290A (en) * | 2020-04-29 | 2020-07-31 | 上海烟草集团有限责任公司 | Method for measuring protein content in tobacco |
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| CN112989554B (en) * | 2020-12-31 | 2023-06-30 | 北京石油化工学院 | Agricultural product water ratio acquisition method, device and equipment based on different drying stages |
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