CN110426222A - A kind of washing machine Anti-fade performance test methods - Google Patents
A kind of washing machine Anti-fade performance test methods Download PDFInfo
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- CN110426222A CN110426222A CN201910641714.3A CN201910641714A CN110426222A CN 110426222 A CN110426222 A CN 110426222A CN 201910641714 A CN201910641714 A CN 201910641714A CN 110426222 A CN110426222 A CN 110426222A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T7/90—Determination of colour characteristics
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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Abstract
The embodiment of the invention discloses a kind of washing machine Anti-fade performance test methods, which comprises color depth K/S and the CIE tristimulus values of decoloration Standard cloth, characteristic quantity L or characteristic quantity a or characteristic quantity b, chromaticity x and y before being tested using colour photometer measurement；To decoloration Standard cloth, totally four test points carry out the test of each index；Experimental prototype is tested using the program of enterprise requirements, while comparing test；After the test, each index parameter measurement of decoloration Standard cloth is carried out again, and coloration ratio, color depth ratio, feature volume index ratio, chromaticity ratio, whiteness when decoloration performance index are calculated with this.This method is to solve the problems, such as ununified for the Anti-fade performance of washing machine in the prior art standard and test method.It proposes the washing machine Anti-fade performance test methods of standard, and the selection for the production and consumption person of manufacturer provides reference and foundation.
Description
Technical field
The present invention relates to washing machine technology fields, and in particular to a kind of washing machine Anti-fade performance test methods.
Background technique
Washing machine is acted on using electric energy production machinery to wash the cleaning appliance of clothing.In the manufacturing of washing machine
In, need to consider many performance factors, such as rinsing performance cleans rate, wash time, energy consumption, Anti-fade performance, operator
Property, ageing-resistant performance etc..Wherein, Anti-fade performance is an important performance indicator of existing washing machine.
The raising that quality of the life is required with people, it is desirable to which washing machine is during laundry, in the base of cleaning clothing
On plinth, the degree of wear for clothing can be reduced to the greatest extent, among these just include the option of Anti-fade performance.Clothing is needed to exist
After washing, the original color of holding clothing and pattern as far as possible, reduce in washing course of washing machine for the decomposition of dyestuff on clothing,
Denaturation and centrifugation.
However, ununified for the Anti-fade performance of washing machine in the art standard and test method, each product
Board, which manufactures commercial city, to be tested and is publicized according to standard, the method for oneself, cause this performance parameter in the market it is fuzzy with
And the selection of consumer is difficult.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of washing machine Anti-fade performance test methods, to solve existing skill
The problem of art of Anti-fade performance in to(for) washing machine ununified standard and test method.It proposes the washing machine of standard
Anti-fade performance test methods, the selection for the production and consumption person of manufacturer provide reference and foundation.
In washing machine Anti-fade performance test methods provided in an embodiment of the present invention, it is related to following specifications standard text
Part, by being cited in full text in incorporated herein and as reference.All reference documents dated, it is all later to repair
Change single (not including the content of corrigenda) or revised edition is not suitable for the present invention；However, on the basis without departing from spirit of that invention
On, encourage each side to examine whether that the latest edition of these files can be used.All reference documents without bearing date, latest edition
Suitable for the present invention.
GB/T 4288-2018 household and similar applications electric washer
GB/T 12490-2014 textile color stability tests resistance to family and commercial laundering color fastness
GB/T 8424.2-2001 textile color stability tests the objective ranking method of opposite whiteness
Wherein, the following terms and definitions that GB/T 4288-2018 is established are suitable for the present invention:
1, decoloration Standard cloth (decolorization sample pieces): the color fastness for Decolorant Test is stable
There is painting cloth.
2, CIE tristimulus values (CIE tristimulus values): in trichromatic system, reach colour matching with light to be measured
The amount of three kinds of required primary stimulis.
Note: this term is quoted from " the objective ranking method that GB/T 8424.2-2001 textile color stability tests opposite whiteness "
In 3.2.
3, resistance to family and commercial laundering color fastness (Colour fastness to domestic and commercial
Laundering) sample and defined STANDARD ADJACENT FABRIC are stitched together, in suitable temperature, basicity, bleaching and friction
Under the conditions of, rubbing action is generated by low bath raio and an appropriate number of immortal steel ball and is washed, makes to obtain within a short period of time
As a result.With gray card or the discoloration of objective ranking sample and STANDARD ADJACENT FABRIC staining.
Note: this term is quoted from " GB/T 12490-2014 textile color stability tests resistance to family and commercial laundering color fastness ".
4, coloration (chromaticity, Δ E): a kind of property of the color not including brightness, reflection is color
Tone and saturation degree.
5, coloration ratio (chromaticity ratio, R): the ratio of model machine coloration and reference machine coloration.
6, color depth (color depth, K/S): a kind of lightness depending primarily on object color, and it is related with tone and chroma
The Color of object color is felt.
7, color depth ratio (color depth ratio, P): the ratio of the variation of model machine color depth and the variation of reference machine color depth.
8, Lab colour model (Lab colour model): being the display mode based on people to the color of color perception, by
Brightness (L) and a, b tri- elements composition in relation to color.
9, characteristic quantity L (characteristic quantity L): characterizing the brightness of textile, and range is from 0-100, face
Color is from white to black.
10, characteristic quantity a (characteristic quantity a): characterizing the red green degree of textile, range from+
127-- 128, color is from red to green.
11, characteristic quantity b (characteristic quantity b): characterizing the champac degree of textile, range from+
127-- 128, color is from blue to yellow.
12, chromaticity coordinate value x (chromaticity coordinate x): the tristimulus values X and its tristimulus values of color
The ratio of summation.
13, chromaticity coordinate value y (chromaticity coordinate y): the tristimulus values Y and its tristimulus values of color
The ratio of summation.
14, chromaticity ratio xy (chromaticity ratio xy): the ratio of the variation of model machine chromaticity and the variation of reference machine chromaticity
Value.
15, whiteness Wr(whiteness Wr): R457 whiteness value.
16, whiteness ratio W (whiteness ratio W): the ratio of the variation of model machine whiteness and the variation of reference machine whiteness.
17, decoloration performance index (decolorization performance index, Dpi): characterization is by decoloration Standard
Cloth is in washing course of washing machine, the degree of colour loss, by coloration ratio, color depth ratio, feature volume index ratio, chromaticity ratio and whiteness
It is obtained than COMPREHENSIVE CALCULATING.
In addition, technical solution of the present invention also is compliant with following technical requirements:
Coloration ratio R≤50%；Color depth ratio P≤50%；Feature volume index ratio Q≤50% (note:, can according to the difference of color
Think QL、Qa、Qb)；Chromaticity ratio xy≤50%；Whiteness ratio W≤50%；Decoloration performance index D pi≤40%.
Specifically, to achieve the above object, the embodiment of the present invention provides a kind of washing machine Anti-fade performance test methods,
The method includes the following steps:
(1) before on-test, using color depth K/S and the CIE tristimulus values of colour photometer measurement decoloration Standard cloth, characteristic quantity L
Or characteristic quantity a or characteristic quantity b and chromaticity x and y；
(2) two test points are respectively chosen in the front and back sides of decoloration Standard cloth, to totally four test points carry out wavelength 400nm~
The measurement of each index in 700nm；
(3) experimental prototype is tested using the program of enterprise requirements；Meanwhile stirring or roller are selected according to model machine type
Reference function effect program compares test；
(4) after the test, decoloration Standard cloth is removed from load, after ironing is smooth, again carry out wavelength 400nm~
Color depth K/S, characteristic quantity L or characteristic quantity a or characteristic quantity b in 700nm, the measurement of chromaticity x and y, and coloration ratio, color are calculated with this
Deep ratio, feature volume index ratio, chromaticity ratio, whiteness when decoloration performance index.
Further, in step (4), after the test, decoloration Standard cloth is removed from load in 60 seconds, is preferably existed
Decoloration Standard cloth is removed from load in 5 seconds.
Further, decoloration Standard cloth ironing is put down according to the requirement of appendix C in GB/T 4288-2018 in step (4)
It is whole.
Further, the coloration ratio is calculated as follows:
1. calculating coloration according to formula (1) changes summation Δ E, the comprehensive change of reflection decoloration Standard cloth washing front and back coloration；
Wherein, Δ E --- coloration changes summation；
ΔEi--- the coloration variation of i-th piece of decoloration Standard cloth, after being measured by colour photometer washing front and back standard decoloration cloth
It is calculated；
N --- decoloration Standard cloth quantity；
It is the relative ratio that model machine changes summation compared with stirring/roller reference machine coloration 2. calculating coloration ratio R according to formula (2):
Wherein, R --- coloration ratio；
ΔEy--- model machine coloration changes summation；
ΔEc--- reference machine coloration changes summation.
Further, the color depth ratio is calculated as follows:
1. calculating color depth according to formula (3) changes summation Δ K/S, comprehensive the becoming of reflection decoloration Standard cloth washing front and back color depth
Change:
Wherein, Δ K/S --- color depth changes summation；
(ΔK/S)i--- the color depth variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ K/S)iIt is calculated according to formula (4):
(ΔK/S)i=K/Smi-K/Sni...............................................(4)
Wherein, K/Sni--- K/S value before i-th piece of decoloration Standard cloth is washed；
K/Smi--- i-th piece of decoloration Standard cloth washes rear K/S value,
It is model machine compared with stirring/roller reference machine color depth variation relative ratio 2. calculating color depth ratio P according to formula (5):
Wherein, P --- color depth ratio；
(ΔK/S)y--- model machine color depth changes summation；
(ΔK/S)c--- reference machine color depth changes summation.
Further, the feature volume index is calculated than as follows, wherein the feature volume index ratio is sample
Relative ratio of the machine compared with the Feature change after being washed before reference machine washing:
1. calculating Feature change summation Δ L, Δ a or Δ b according to formula (6)-formula (8):
Wherein, Δ L or Δ a or Δ b --- Feature change summation；
(ΔL)iOr (Δ a)iOr (Δ b)i--- the Feature change of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity；
Wherein, (Δ L)iOr (Δ a)iOr (Δ b)iIt is calculated by formula (9)-formula (11):
(ΔL)i=Lmi-Lni....................................................(9)
(Δa)i=ami-ani....................................................(10)
(Δb)i=bmi-bni....................................................(11)
Wherein, LniOr aniOr bni--- L value or a value or b value before i-th piece of decoloration Standard cloth is washed；
LmiOr amiOr bmi--- i-th piece of decoloration Standard cloth washes rear L value or a value or b value,
2. calculating feature volume index ratio Q according to formula (12)-formula (14)L、QaOr Qb:
Wherein, QLOr QaOr Qb--- feature volume index ratio；
(ΔL)yOr (Δ a)yOr (Δ b)y--- model machine Feature change summation；
(ΔL)cOr (Δ a)cOr (Δ b)c--- reference machine Feature change summation.
In some embodiments of the present invention, for the decoloration Standard cloth of different colours, difference selected characteristic amount L or a
Or b, to targetedly characterize the variation of each color.Wherein, characteristic quantity L characterizes the brightness of textile, de- for black
Colour standard cloth is partially white as characteristic value variation delta L > 0, conversely, being partially black when Δ L < 0；Characteristic quantity a characterizes textile
Red green degree is partially red as characteristic value variation delta a > 0 for red decoloration Standard cloth, conversely, being partially green when Δ a < 0；
Characteristic quantity b characterizes the champac degree of textile, is used for blue discoloration standard cloth, as characteristic value variation delta b > 0 to be partially yellow, instead
It, is partially blue when Δ b < 0.
Further, the chromaticity is calculated than as follows, wherein the chromaticity ratio xy, relatively stirred for model machine/
The relative ratio of roller reference machine chromaticity variation:
1. calculating chromaticity according to formula (15)-formula (16) changes summation,
Wherein, Δ x or Δ y --- chromaticity changes summation；
(Δx)iOr (Δ y)i--- the chromaticity variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ x)i(Δ y)iIt is calculated by formula (17)-formula (18):
(Δx)i=xmi-xni....................................................(17)
(Δy)i=ymi-yni....................................................(18)
Wherein, xni,yni--- i-th piece of decoloration Standard cloth washes preceding x, y value；
xmi,ymi--- i-th piece of decoloration Standard cloth washes rear x, y value,
2. chromaticity ratio xy is calculated according to formula (19),
Wherein, xy --- chromaticity ratio；
Δxy, Δ yy--- model machine chromatic value changes summation；
Δxc, Δ yc--- reference machine chromatic value changes summation.
Further, the whiteness is calculated than as follows, wherein the whiteness ratio W, relatively stirred for model machine/
The relative ratio of roller reference machine whiteness variation:
1. calculating whiteness according to formula (20) changes summation Wr, the comprehensive change of reflection decoloration Standard cloth washing front and back whiteness:
Wherein, Wr --- whiteness value variable quantity is calculated after being measured by colour photometer washing front and back standard decoloration cloth；
Wri--- the whiteness value variable quantity of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
2. whiteness ratio W is calculated according to formula (21),
Wherein, W --- whiteness ratio；
Wry--- model machine whiteness value variable quantity；
Wrc--- reference machine whiteness value variable quantity.
Further, the decoloration performance index is calculated as follows, wherein the decoloration performance index is by color
Degree ratio, color depth ratio, feature volume index ratio, chromaticity ratio and whiteness show that reflection decoloration Standard cloth washing front and back is de- than COMPREHENSIVE CALCULATING
The degree of color:
Decoloration performance index is calculated according to formula (22):
Dpi=R × 30%+P × 30%+Q × 20%+xy × 10%+W × 10%
........................................(22)
Wherein, Dpi --- decoloration performance index；
Q --- according to the difference of color, it is divided into QLOr QaOr Qb；Q is used in wherein black and white evaluationL, red green evaluation use Qa, yellow
Q is used in blue evaluationb。
Wherein, parameter " xy " and R457 whiteness are made described further below.Those of ordinary skill in the art are come
It says, related content can also be inquired from the prior art and document.The content that these are further illustrated is merely for explanation
The purpose of technical solution of the present invention, is not meant to limit the scope of the invention.
Following description is related to CIE1931 colorimetry system (Yxy table color method).
Yxy colour system system:
In Yxy colour system system, Y is the lightness factor, it corresponds to the percentage value of reflectivity or transmittance.The coordinate value of x and y
It is determined by following equations:
X=X/ (X+Y+Z)
Y=Y/ (X+Y+Z)
Wherein X, Y, Z are the tristimulus values that instrument measures sample.
It is recognised that visible light colors are distributed in a chromaticity triangle in x, y chromaticity diagram, colorfulness is from center
To margin development, and the variation of tone then develops around the side of triangle, and the chromatic value of object can be in chromaticity triangle
Unique point determines, that is, may know that tone and colorfulness, and Y value then shows the brightness of color.
Δ Y=Y2-Y1
Δ x=x2-x1
Δ y=y2-y1
Wherein, Y2、x2、y2It is that decoloration Standard cloth washes rear sample value；Y1、x1、y1It is that decoloration Standard cloth washes preceding sample value.
It is compared as a result, by using the prototype test results and reference machine test result, increases the average value of Δ x and Δ y,
That is xy=(Δ x+ Δ y)y/(Δx+Δy)c。
In addition, R457 whiteness is an easy measurement method.In the survey of international standard ISO2470 paper diffusing reflection ratio
All once R457 whiteness (also known as indigo plant degree of highlighting) was used in the industries such as amount and China's paper, plastics.It is provided with approximate A
Light source illumination, the peak wavelength of the overall effectively spectral response curve of whiteness instrument is at 457nm, half band-width 44nm.
Further, the experimental condition of the method for the present invention meets in GB/T 4288-2018 6.1 requirement.
Decoloration Standard cloth should use within the shelf-life, should be stored at (0~5) DEG C shady and cool drying, surface corrugationless and pressure
Trace.Decoloration Standard cloth should keep no trifle in the world and dirt, Ying Caiyong multilayer folding, it is ensured that opaque after folding when measuring.
The CIE tristimulus values Y of decoloration Standard cloth is it is ensured that in a certain range: red 11 ± 0.5, blue 6.5 ± 0.5,
Black 4.5 ± 0.5, the resistance to family of the decoloration Standard cloth of each color and commercial laundering color fastness should be at 3-4 grades, and each batch
Color fastness variation must not exceed 1 rank.
The quantity of standard decoloration Standard cloth, the quantity of standard wash fabric should meet in GB/T 4288-2018 wanting C.4
It asks；The adhering mode and test load load mode of sample block should meet the mutually requirement in GB/T 4288-2018 C.8.Test load
It is required that should be identical as test of washing performance.
Note 1: test load quality should include the quality of standard decoloration Standard cloth.
Note 2: it should ensure that the relevant test of color was not done in load, avoid secondary contamination.
Detergent is chosen and is prepared according to appendix C .9.2 in GB/T 4288-2018.Test water hardness, water temperature and
Hydraulic pressure meets the related request of appendix C .6 in GB/T 4288-2018.
The embodiment of the present invention has the advantages that
1, technical solution of the present invention defines the range of decoloration performance, term and definition, technical requirements and test method.
2, suitable for the various washing machines with Anti-fade performance.
3, the washing machine Anti-fade performance test methods of standard are proposed, are the selection of the production and consumption person of manufacturer
Provide reference and foundation.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
The present embodiment provides a kind of washing machine Anti-fade performance test methods, and the method includes the following steps:
(1) before on-test, using color depth K/S and the CIE tristimulus values of colour photometer measurement decoloration Standard cloth, characteristic quantity L
Or characteristic quantity a or characteristic quantity b and chromaticity x and y；
(2) two test points are respectively chosen in the front and back sides of decoloration Standard cloth, to totally four test points carry out wavelength 400nm~
The measurement of each index in 700nm；
(3) experimental prototype is tested using the program of enterprise requirements；Meanwhile stirring or roller are selected according to model machine type
Reference function effect program compares test；
(4) after the test, decoloration Standard cloth is removed from load (in 5 seconds) as early as possible, according to GB/T 4288-2018
The requirement of middle appendix C by decoloration Standard cloth ironing it is smooth after, again carry out wavelength 400nm~700nm in color depth K/S, feature
L or characteristic quantity a or characteristic quantity b, the measurement of chromaticity x and y are measured, and coloration ratio, color depth ratio, feature volume index ratio, color are calculated with this
Product ratio, whiteness when decoloration performance index.
Embodiment 2
On the basis of embodiment 1, the coloration ratio is calculated as follows:
1. calculating coloration according to formula (1) changes summation Δ E, the comprehensive change of reflection decoloration Standard cloth washing front and back coloration；
Wherein, Δ E --- coloration changes summation；
ΔEi--- the coloration variation of i-th piece of decoloration Standard cloth, after being measured by colour photometer washing front and back standard decoloration cloth
It is calculated；
N --- decoloration Standard cloth quantity；
It is the relative ratio that model machine changes summation compared with stirring/roller reference machine coloration 2. calculating coloration ratio R according to formula (2):
Wherein, R --- coloration ratio；
ΔEy--- model machine coloration changes summation；
ΔEc--- reference machine coloration changes summation.
Embodiment 3
On the basis of embodiment 2, the color depth ratio is calculated as follows:
1. calculating color depth according to formula (3) changes summation Δ K/S, comprehensive the becoming of reflection decoloration Standard cloth washing front and back color depth
Change:
Wherein, Δ K/S --- color depth changes summation；
(ΔK/S)i--- the color depth variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ K/S)iIt is calculated according to formula (4):
(ΔK/S)i=K/Smi-K/Sn,i..............................................(4)
Wherein, K/Sni--- K/S value before i-th piece of decoloration Standard cloth is washed；
K/Smi--- i-th piece of decoloration Standard cloth washes rear K/S value,
It is model machine compared with stirring/roller reference machine color depth variation relative ratio 2. calculating color depth ratio P according to formula (5):
Wherein, P --- color depth ratio；
(ΔK/S)y--- model machine color depth changes summation；
(ΔK/S)c--- reference machine color depth changes summation.
Embodiment 4
On the basis of embodiment 3, the feature volume index is calculated than as follows, wherein the characteristic quantity
Index is than the relative ratio for model machine compared with the Feature change after washing before reference machine washing:
1. calculating Feature change summation Δ L, Δ a or Δ b according to formula (6)-formula (8):
Wherein, Δ L or Δ a or Δ b --- Feature change summation；
(ΔL)iOr (Δ a)iOr (Δ b)i--- the Feature change of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity；
Wherein, (Δ L)iOr (Δ a)iOr (Δ b)iIt is calculated by formula (9)-formula (11):
(ΔL)i=Lmi-Lni.....................................................(9)
(Δa)i=ami-ani....................................................(10)
(Δb)i=bmi-bni....................................................(11)
Wherein, LniOr aniL value or a value or b value before or bni --- i-th piece of decoloration Standard cloth is washed；
LmiOr amiOr bmi--- i-th piece of decoloration Standard cloth washes rear L value or a value or b value,
2. calculating feature volume index ratio Q according to formula (12)-formula (14)L、QaOr Qb:
Wherein, QLOr QaOr Qb--- feature volume index ratio；
(ΔL)yOr (Δ a)yOr (Δ b)y--- model machine Feature change summation；
(ΔL)cOr (Δ a)cOr (Δ b)c--- reference machine Feature change summation.
Embodiment 5
On the basis of embodiment 4, the chromaticity is calculated than as follows, wherein the chromaticity ratio xy is sample
Machine is compared with stirring/roller reference machine chromaticity variation relative ratio:
1. calculating chromaticity according to formula (15)-formula (16) changes summation,
Wherein, Δ x or Δ y --- chromaticity changes summation；
(Δx)iOr (Δ y)i--- the chromaticity variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ x)i(Δ y)iIt is calculated by formula (17)-formula (18):
(Δx)i=xmi-xni....................................................(17)
(Δy)i=ymi-yni....................................................(18)
Wherein, xni,yni--- i-th piece of decoloration Standard cloth washes preceding x, y value；
xmi,ymi--- i-th piece of decoloration Standard cloth washes rear x, y value,
2. chromaticity ratio xy is calculated according to formula (19),
Wherein, xy --- chromaticity ratio；
Δxy, Δ yy--- model machine chromatic value changes summation；
Δxc, Δ yc--- reference machine chromatic value changes summation.
Embodiment 6
On the basis of embodiment 5, the whiteness is calculated than as follows, wherein the whiteness ratio W is sample
Machine is compared with stirring/roller reference machine whiteness variation relative ratio:
1. calculating whiteness according to formula (20) changes summation Wr, the comprehensive change of reflection decoloration Standard cloth washing front and back whiteness:
Wherein, Wr --- whiteness value variable quantity is calculated after being measured by colour photometer washing front and back standard decoloration cloth；
Wri--- the whiteness value variable quantity of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
2. whiteness ratio W is calculated according to formula (21),
Wherein, W --- whiteness ratio；
Wry--- model machine whiteness value variable quantity；
Wrc--- reference machine whiteness value variable quantity.
Embodiment 7
On the basis of embodiment 6, the decoloration performance index is calculated as follows, wherein the decolourising property
Energy index is obtained by coloration ratio, color depth ratio, feature volume index ratio, chromaticity ratio and whiteness than COMPREHENSIVE CALCULATING, reflects decoloration Standard cloth
The degree that washing front and back is decolourized:
Decoloration performance index is calculated according to formula (22):
Dpi=R × 30%+P × 30%+Q × 20%+xy × 10%+W × 10%
........................................(22)
Wherein, Dpi --- decoloration performance index；
Q --- according to the difference of color, it is divided into QLOr QaOr Qb；Q is used in wherein black and white evaluationL, red green evaluation use Qa, yellow
Q is used in blue evaluationb。
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of washing machine Anti-fade performance test methods, which is characterized in that the method includes the following steps:
(1) before on-test, using color depth K/S and the CIE tristimulus values of colour photometer measurement decoloration Standard cloth, characteristic quantity L or spy
Sign amount a or characteristic quantity b and chromaticity x and y；
(2) two test points are respectively chosen in the front and back sides of decoloration Standard cloth, to totally four test points carry out wavelength 400nm~
The measurement of each index in 700nm；
(3) experimental prototype is tested using the program of enterprise requirements；Meanwhile stirring or roller reference are selected according to model machine type
Function effect program compares test；
(4) after the test, decoloration Standard cloth is removed from load, after ironing is smooth, again carry out wavelength 400nm~
Color depth K/S in 700nm, characteristic quantity L or characteristic quantity a or characteristic quantity b, the measurement of chromaticity x and y, and coloration ratio, color are calculated with this
Deep ratio, feature volume index ratio, chromaticity ratio, whiteness when decoloration performance index.
2. the method according to claim 1, wherein after the test, will decolourize in 60 seconds in step (4)
Standard cloth is removed from load.
3. according to the method described in claim 2, it is characterized in that, after the test, decoloration is marked in 5 seconds in step (4)
Quasi- cloth is removed from load.
4. the method according to claim 1, wherein according to appendix C in GB/T 4288-2018 in step (4)
It is required that decoloration Standard cloth ironing is smooth.
5. method according to any of claims 1-4, which is characterized in that the coloration ratio is counted as follows
It calculates:
1. calculating coloration according to formula (1) changes summation Δ E, the comprehensive change of reflection decoloration Standard cloth washing front and back coloration；
Wherein, Δ E --- coloration changes summation；
ΔEi--- the coloration variation of i-th piece of decoloration Standard cloth calculates after being measured by colour photometer washing front and back standard decoloration cloth
Out；
N --- decoloration Standard cloth quantity；
It is the relative ratio that model machine changes summation compared with stirring/roller reference machine coloration 2. calculating coloration ratio R according to formula (2):
Wherein, R --- coloration ratio；
ΔEy--- model machine coloration changes summation；
ΔEc--- reference machine coloration changes summation.
6. according to the method described in claim 5, it is characterized in that, the color depth ratio is calculated as follows:
1. calculating color depth according to formula (3) changes summation Δ K/S, the comprehensive change of reflection decoloration Standard cloth washing front and back color depth:
Wherein, Δ K/S --- color depth changes summation；
(ΔK/S)i--- the color depth variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ K/S)iIt is calculated according to formula (4):
(ΔK/S)i=K/Smi-K/Sni...................................................(4)
Wherein, K/Sni--- K/S value before i-th piece of decoloration Standard cloth is washed；
K/Smi--- i-th piece of decoloration Standard cloth washes rear K/S value,
It is model machine compared with stirring/roller reference machine color depth variation relative ratio 2. calculating color depth ratio P according to formula (5):
Wherein, P --- color depth ratio；
(ΔK/S)y--- model machine color depth changes summation；
(ΔK/S)c--- reference machine color depth changes summation.
7. according to the method described in claim 6, it is characterized in that, the feature volume index is calculated than as follows,
Wherein, the feature volume index is than the relative ratio for model machine compared with the Feature change after washing before reference machine washing:
1. calculating Feature change summation Δ L, Δ a or Δ b according to formula (6)-formula (8):
Wherein, Δ L or Δ a or Δ b --- Feature change summation；
(ΔL)iOr (Δ a)iOr (Δ b)i--- the Feature change of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity；
Wherein, (Δ L)iOr (Δ a)iOr (Δ b)iIt is calculated by formula (9)-formula (11):
(ΔL)i=Lmi-Lni.......................................................(9)
(Δa)i=ami-ani....................................................(10)
(Δb)i=bmi-bni.....................................................(11)
Wherein, LniOr aniOr bni--- L value or a value or b value before i-th piece of decoloration Standard cloth is washed；
LmiOr amiOr bmi--- i-th piece of decoloration Standard cloth washes rear L value or a value or b value,
2. calculating feature volume index ratio Q according to formula (12)-formula (14)L、QaOr Qb:
Wherein, QLOr QaOr Qb--- feature volume index ratio；
(ΔL)yOr (Δ a)yOr (Δ b)y--- model machine Feature change summation；
(ΔL)cOr (Δ a)cOr (Δ b)c--- reference machine Feature change summation.
8. the method according to the description of claim 7 is characterized in that the chromaticity is calculated than as follows, wherein institute
Chromaticity ratio xy is stated, is model machine compared with stirring/roller reference machine chromaticity variation relative ratio:
1. calculating chromaticity according to formula (15)-formula (16) changes summation,
Wherein, Δ x or Δ y --- chromaticity changes summation；
(Δx)iOr (Δ y)i--- the chromaticity variation of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
Wherein, (Δ x)i(Δ y)iIt is calculated by formula (17)-formula (18):
(Δx)i=xmi-xni.....................................................(17)
(Δy)i=ymi-yni.....................................................(18)
Wherein, xni,yni--- i-th piece of decoloration Standard cloth washes preceding x, y value；
xmi,ymi--- i-th piece of decoloration Standard cloth washes rear x, y value,
2. chromaticity ratio xy is calculated according to formula (19),
Wherein, xy --- chromaticity ratio；
Δxy, Δ yy--- model machine chromatic value changes summation；
Δxc, Δ yc--- reference machine chromatic value changes summation.
9. according to the method described in claim 8, it is characterized in that, the whiteness is calculated than as follows, wherein institute
Whiteness ratio W is stated, is model machine compared with stirring/roller reference machine whiteness variation relative ratio:
1. calculating whiteness according to formula (20) changes summation Wr, the comprehensive change of reflection decoloration Standard cloth washing front and back whiteness:
Wherein, Wr --- whiteness value variable quantity is calculated after being measured by colour photometer washing front and back standard decoloration cloth；
Wri--- the whiteness value variable quantity of i-th piece of decoloration Standard cloth；
N --- decoloration Standard cloth quantity,
2. whiteness ratio W is calculated according to formula (21),
Wherein, W --- whiteness ratio；
Wry--- model machine whiteness value variable quantity；
Wrc--- reference machine whiteness value variable quantity.
10. according to the method described in claim 9, it is characterized in that, the decoloration performance index is calculated as follows,
Wherein, the decoloration performance index is obtained by coloration ratio, color depth ratio, feature volume index ratio, chromaticity ratio and whiteness than COMPREHENSIVE CALCULATING,
Reflect the degree that decoloration Standard cloth washing front and back is decolourized:
Decoloration performance index is calculated according to formula (22):
Dpi=R × 30%+P × 30%+Q × 20%+xy × 10%+W × 10%........................ (22)
Wherein, Dpi --- decoloration performance index；
Q --- according to the difference of color, it is divided into QLOr QaOr Qb；Q is used in wherein black and white evaluationL, red green evaluation use Qa, champac color
Q is used in evaluationb。
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