Showing posts with label color fastness test. Show all posts
Showing posts with label color fastness test. Show all posts

Monday, March 5, 2012

Colorfastness to bleaching:Peroxide

ISO-105-N02-1995
This method is intended for determining the resistance of the colour of textiles of all kinds, and in all forms, to the action of bleaching baths containing peroxide in concentrations commonly used in textile processing. A specimen of the textile in contact with adjacent fabrics is immersed in the bleaching solution, rinsed and dried. The change in color and the staining .
Brief description
Bath1 (for natural and regenerated cellulose)
Treat the test specimen and adjacent fabric in bleach solution containing 5 ml /ltr hydrogen peroxide ( 30% solution) ,5 ml/l sodium silicate and 0.1 gpl of magnesium chloride. Set the initial pH 10.5 ,m:l 1:30, for 1 hr at 90 deg cel. Rinse for 10 min in cold water ,squeeze and hang to dry in warm air at max 60 deg cel.
Bath 2.(for natural and regenerated cellulose)
sodium peroxide(30%) 3 gpl
sodium silicate solution 5 ml/l
magnesium chloride 0.1 gm/l
Initial pH 11.3-11.7
M;L 1:30,temperature 80 deg cel for 60 min.
Bath 3( for wool and acetate)
Hydrogen peroxide(30%) 20 gpl
sodium pyrophosphate 5 ml/l
magnesium chloride 0.1 gm/l
Initial pH 10.0
M;L 1:30,temperature 70 deg cel for 120 min.  
Bath 4( for silk)
Hydrogen peroxide(30%) 20 gpl
sodium silicate solution 5 ml/l
Initial pH 9.3
M;L 1:30,temperature 50 deg cel for 120 min. For detailed information on the subject please go here BS-en-ISO-105-N02-1995 
http://www.dfmg.com.tw/member/standard/bs/BS-N02.HTM

Friday, February 3, 2012

Colorfastness to bleaching:Peroxide

This method is intended for determining the resistance of the colour of textiles of all kinds, and in all forms, to the action of bleaching baths containing peroxide in concentrations commonly used in textile processing.

A specimen of the textile in contact with adjacent fabrics is immersed in the bleaching solution, rinsed and dried. The change in colour and the staining .

Saturday, November 28, 2009

Colour fastness to metals in the dye-bath: chromium salts

This method is intended for determining the effect on the colour of a dye, of dyeing in the presence of hexavalent chromium salts. It is applicable to wool. An alternative method is specified in 6.3 to provide a milder test suitable for assessing the effect of chromium salts in such concentrations as might be found when shading.
PRINCIPLE
The difference in colour between dyeings made with and without potassium dichromate is assessed with the grey scale.
For detail please click here;-http://www.dfmg.com.tw/member/standard/bs/BS-z01.HTM

Colour fastness to metals

This method is intended for determining the effect on the colour of a dye, of dyeing in the presence of metals (iron and copper or their salts) either used in the construction of dyeing machinery or resulting from water and steam used in dyeing.
PRINCIPLE
The difference in colour between dyeings made in the presence and in the absence of salts of the metal is assessed with the grey scale.
For detail click here:http://www.dfmg.com.tw/member/standard/bs/BS-Z02.HTM

ISO 105-A01 to A05

ISO 105-A01:2010 provides general information about the methods for testing colour fastness of textiles for the guidance of users. The uses and limitations of the methods are pointed out, several terms are defined, an outline of the form of the methods is given and the contents of the clauses constituting the methods are discussed. Procedures common to a number of the methods are discussed briefly.
ISO 105 A02 : Describes the grey scale for determining changes in colour of textiles in colour fastness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working standards and standards that may have changed can be compared. The essential scale (5 steps) consists of pairs of non-glossy grey colour chips (or swatches of grey cloth). In addition, an augmented scale includes four half-steps and, thus, 9 steps.
ISO 105 A03 :Describes the grey scale for determining staining of adjacent fabrics in colour fastness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working standards and standards that may have changed can be compared. The essential scale (5 steps) consists of pairs of non-glossy grey or white colour chips (or swatches of grey or white cloth). In addition, an augmented scale includes four half-steps and, thus, 9 steps.
ISO 105-A04:- Tests for colour fastness. Method for the instrumental assessment of the degree of staining of adjacent fabrics
ISO 105-A05:-Instrumental assessment of change in colour for determination of grey scale rating.Specifies an instrumental method for assessing the change in colour of a test specimen in comparision to an identical untreated reference, and the calculations undertaken to convert the instrumental measurements into a grey scale rating.
ISO 105-F09:2009 specifies a cotton rubbing cloth which can be used for the assessment of staining in colour fastness to rubbing tests. The staining properties of the cotton rubbing cloth under test are assessed against a cotton rubbing cloth reference fabric, using a cotton dyed reference fabric, both of which are available from a specified source.

Colour fastness to weathering : Xenon arc

This part of ISO 105 specifies a method intended for determining the resistance of the colour of textiles of all kinds except loose fibres to the action of weather as determined by exposure in a cabinet equipped with a xenon arc lamp.
Principle
Specimens of the textile are exposed under specified conditions to light from a xenon arc lamp and to water spray. At the same time, eight dyed wool references are exposed to light but are protected from water spray by a sheet of window-glass. The fastness is assessed by comparing the change in colour of the specimen with that of the reference.
click here for more detail:http://www.dfmg.com.tw/member/standard/bs/BS-b04.HTM

Detection and assessment of photochromism internal basis

This part of ISO 105 specifies a method intended for detecting and assessing change in colour, after brief exposure to light, of coloured textiles which change in colour on exposure to light but which virtually return to their original shade when stored in the dark.
What Is Photochromism?
Principle
A specimen of the textile is exposed to light of high intensity for a time much shorter than that necessary to cause a permanent change. The change in colour of the specimen is assessed immediately after exposure, using the grey scale. The specimen is then stored in the dark and assessed again.
click here for detail: Detailed method
or
http://www.dfmg.com.tw/member/standard/bs/BS-b05.HTM

Friday, November 27, 2009

Colorfastness to domestic and commerical laundering

Scope and field of application
1.1 This part of IS0 105 specifies methods intended for determining the resistance of the colour of textiles of all kinds and in all forms to domestic or commercial laundering procedures used for normal household articles. Industrial and hospital articles may be subjected to special laundering procedures which may be more severe in some respects.
1.2 The colour loss and staining resulting from desorption and/or abrasive action in one "S'' (single) test closely approximates to one commercial or domestic laundering. The results of one "M" (multiple) test may in some cases be approximated by the results of up to five domestic or commercial launderings at temperatures not exceeding 70 oC. The "M" tests are more severe than the "S" tests because of an increase in mechanical action.
1.3 These methods do not reflect the effect of optical brighteners present in commercial washing products.
Principle
A specimen of the textile in contact with specified adjacent fabric or fabrics is laundered, rinsed and dried. Specimens are laundered under appropriate conditions of temperature, alkalinity, bleaching and abrasive action such that the result is obtained in a conveniently short time. The abrasive action is accomplished by the use of a low liquor ratio and an appropriate number of steel balls. The change in colour of the specimen and the staining of the adjacent fabric or fabrics are assessed with the grey scales.





Colorfastness to washing: Test 5

This part of ISO 105 specifies Test No 5 of a series of five washing tests that have been established to investigate the fastness to washing of coloured textiles and which between them cover the range of washing procedures from mild to severe
A specimen of the textile in contact with one or two specified adjacent fabrics is mechanically agitated under specified conditions of time(4 hrs) and temperature(95 oC ± 2 oC)
in a soap solution(Soap solution, containing 5 g of soap and 2 g of anhydrous sodium carbonate per litre of water ). then rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabric(s) are assessed with the grey scales.
For Detail please click here
http://www.scribd.com/doc/73185924/Color-Fastness-to-Washing

Colorfastness to washing: Test 4

This part of ISO 105 specifies Test No. 4 of a series of five washing tests that have been established to investigate the fastness to washing of coloured textiles and which between them cover the range of washing procedures from mild to severe.
Principle
A specimen of the textile in contact with one or two specified adjacent fabrics is mechanically agitated under specified conditions of time(40 min ± 2 min) and temperature(95 oC ± 2 oC. ) in a soap solution(containing 5 g of soap and 2 g of anhydrous sodium carbonate per litre of water.), then rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabric(s) are assessed with the grey scales.

Colorfastness to washing :Test 3

This part of ISO 105 specifies Test No. 3 of a series of five washing tests that have been established to investigate the fastness to washing of coloured textiles and which between them cover the range of washing procedures From mild to severe.
Principle
A specimen of the textile in contact with one or two specified adjacent fabrics is mechanically agitated under specified conditions of time and temperature(prescribed temperature of 60 oC ± 2 oC) in a soap solution, then rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabric (s) are assessed with the grey scales.
For more details click here:- http://www.scribd.com/doc/29979872/Different-Fastness-Test

http://www.dfmg.com.tw/member/standard/bs/BS-c03.HTM

Colorfastness to washing: Test 2

This part of of ISO 105 specifies Test No. 2 of a series of five washing tests that have been established to investigate the fastness to washing of coloured textiles and which between them cover the range of washing procedures from mild to severe.
Principle
A specimen of the textile in contact with one or two specified adjacent fabrics is mechanically agitated under specified conditions of time and temperature in a soap solution, then rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabric(s) are assessed with the grey scales.

Colorfastness to washing: Test 1

Colour fastness to washing and laundering
This part of ISO 105 specifies Test No 1 of a series of five washing tests that have been established to investigate the fastness to washing of coloured textiles and which between them cover the range of washing procedures from mild to severe.
A specimen of the textile, in contact with one or two specified adjacent fabrics, is mechanically agitated under described conditions of time and temperature in a soap solution, then rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabric(s) are assessed with the grey scales.
For details click here:
http://www.scribd.com/doc/29979872/Different-Fastness-Test
http://www.dfmg.com.tw/member/standard/bs/BS-c01.HTM

Colorfastness to atmosperic Oxides of nitrogen

This part of ISO 105 specifies a method for determining the resistance of the colour of textiles to the action of oxides of nitrogen in the atmosphere at elevated temperatures and high relative humidities.
A test specimen and a piece of control fabric are simultaneously exposed to oxides of nitrogen in an atmosphere which is maintained at 87.5 % 2.5 % relative humidity and at temperature of 40 øC 1 øC until the control fabric shows a colour change corresponding to that of a reference of fading. The exposure/measurement cycle is repeated until the specimen shows a definite colour change or for a prescribed number of cycles.
click here for more detail: http://wenku.baidu.com/view/00c2d9896529647d272852c9.html?from=related
http://www.dfmg.com.tw/member/standard/bs/BS-g04.HTM

Colorfastness to ozone in the atmosphere

This method is intended for determining the resistance of the colour of all kinds of textiles to the action of ozone in the atmosphere both at ambient room temperatures with relative humidities not exceeding 65 % and at elevated temperatures with relative humidities above 80 %.

A specimen and a swatch of control sample are simultaneously exposed to ozone in an atmosphere at ambient room temperatures and relative humidities not exceeding 65 %, until the control sample shows a colour change corresponding to that of a standard of fading. This exposure period constitutes one cycle. The cycles are repeated until the specimen shows a definite colour change or for a prescribed number of cycles.
A specimen and a swatch of control sample are simultaneously exposed to ozone in an atmosphere which is maintained at 85 ± 5 % relative humidity and a temperature of 40 ± 5 oC until the control sample shows a colour change corresponding to that of a standard of fading. The cycles are repeated until the specimen shows a definite colour change or for a prescribed number of cycles.
The fading of dyes on certain fibres does not readily take place at humidities below 80 %. A test at high humidities is required to produce colour change that predicts service fading under warm, humid conditions.
click here for more detail:-

AATCC 109-2005 Colorfastness to Ozone in the Atmosphere under Low Humidities


http://www.dfmg.com.tw/member/standard/bs/BS-g03.HTM

Colorfastness to burnt gas fumes

(Vitually same as AATCC Test Method 23)
This method is intended for determining the resistance of the colour of textiles of all kinds and in all forms except loose fibres, when exposed to atmospheric oxides of nitrogen as derived from the combustion of butane (C.P.) gas.
This method may be used for rating colour fastness of dyes by applying the dye to textiles by a specified procedure and at a specified depth of colour and testing the dyed textiles.

A specimen of the textile and the test-control fabric are exposed simultaneously to oxides of nitrogen from burnt gas fumes until the test control shows a change in colour corresponding to that of the standard of fading. The change in colour of the specimen is assessed with the grey scale.If no colour change is observed in the specimen after one exposure period or cycle, exposure may be continued for either a specified number of periods or for the number of periods required to produce a specified amount of colour change in the specimen.
For more detail :-
http://wenku.baidu.com/search?word=Colorfastness+to+burnt+gas+fumes&lm=0&od=0&fr=top_view
http://www.dfmg.com.tw/member/standard/bs/BS-g02.HTM

Colorfastness to nitrogen oxides

This method is intended for determining the resistance of the colour of textiles of all kinds and in all forms to the action of nitrogen oxides produced during combustion of gas, coal, oil, etc., and when air is passed over heated filaments.
Two tests differing in severity are provided;
one or both of them may be used depending on the requirement.

Specimens of textiles are exposed to nitrogen oxides, In a closed container until either one or three test-control specimens exposed simultaneously with the test specimens have changed in colour to a predetermined extent. The change in colour of the specimen is assessed with the grey scale.

Colorfastness to dry heat (excluding pressing)

This method is intended for determining the resistance of the color of textiles of all kinds and in all forms to the action of dry heat, excluding pressing.
Three tests differing in temperature are provided; one or more of them may be used, depending on the requirements and the stability of the fibers.
When this method is used for assessing color change and staining in dyeing, printing and finishing processes, it should be recognized that other chemical and physical factors may influence the results.
A specimen of the textile in contact with specified adjacent fabrics is heated by close contact for 30 seconds in a drying oven under a pressure of 4 kPa( 40 kg per sq. cm)  with a medium which is heated to the required temperature such as
1.150 deg.cel
2.180 deg. cel
3.210 deg.cel
Remove the specimen and hang for 4 hrs in a normal climate ( 20deg cel/65% relative humidity)
The change in color of the specimen and the staining of the adjacent fabrics are assessed with the grey scales.

Colorfstness to Stoving

This method is intended for determining the resistance of the colour of textiles of all kinds and in all forms to the action of sulphur dioxide as used for bleaching animal fibres.

A specimen of the textile, containing its own mass of soap solution, and a test-control specimen are exposed in an atmosphere containing sulphur dioxide. The change in colour of the specimen and the staining of the adjacent fabrics are assessed with the grey scales.
For more details click here:-
 http://www.scribd.com/doc/27163926/BS-en-ISO-105-N05-1995-Textiles-Tests-for-Colour-Fastness
http://www.dfmg.com.tw/member/standard/bs/BS-N05.HTM

Colorfastness to bleaching: Sodium chlorite: Severe

This method is intended for determining the resistance of the colour of natural cellulose textiles to the action of Severe bleaching with sodium chlorite as ordinarily employed in textile processing

A specimen of the textile in contact with specified adjacent fabrics is treated in a sodium chlorite solution, rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabrics are assessed with the grey scales.
for more detail click here:-
http://www.zjff.net:81/files/20110513/1305249158421_7.pdf
http://www.dfmg.com.tw/member/standard/bs/BS-N04.HTM