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1、INTERNATIONAL STANDARD IS0 5435 Third edition 1994-08-01 Rubber compounding ingredients - Carbon black - Determination of tinting strength Ingrhdients de melange du caoutchouc - Noir de carbone - D 0,200 g of N 500 to N 700 series carbon blacks. 7.2 Individual procedures Instructions are given relat
2、ing to different types of commercial instrument (5.6). 3) ITZnO is available from Titan Specialties Inc., SWY 152W, P.O. Box 2316, Pampa, Texas 79066-2316, USA. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545
3、001 Not for Resale, 04/25/2007 01:40:44 MDTNo reproduction or networking permitted without license from IHS -,-,- Q IS0 IS0 5435:1994(E) Other instruments may be used provided that they have similar performance. All instruments shall be operated in accordance with the manufacturer s instructions. 7.
4、2.1 Measurements using the Erichsen Tint Tester 7.2.1 .l Apparatus NOTE 2 For general details, see 5.1 to 5.5. 7.2.1.1.1 Erichsen Tint Tester , model 517 or 527. NOTE 3 Model 527 has a specially designed head which keeps the paste off the lens. 7.2.1.1.2 Film applicator, 0,08 mm gauge depth, to give
5、 0,04 mm wet film thickness. 7.2.1.1.3 Glass plate, approximately 750 mm x 500mmx10mm. 7.2.1.2 Calibration 7.2.1.2.1 Switch on the instrument and adjust in ac- cordance with the manufacturer s instructions. Clean the glass plate (7.2.1 .I .3) with a tissue to remove any dust particles or film. Using
6、 a clean palette knife (5.41, place a portion of one of the mulled pastes with 100 % calibration tint value (7.1 .I01 at the top edge of the glass plate and smear it almost to the bottom edge. Using the film applicator (7.2.1 .I .2), draw down the paste to the bottom edge in about 2 s to 3 s. 7.2.1.
7、2.2 Place the reflectometer head on the drawdown on the paste. Adjust the meter to read 3,0 for at least three readings, all taken at 75 mm or more from the top of the drawdown. If the results are variable, gather up the paste and make another drawdown. 7.2.1.2.3 Make a duplicate drawdown of the dup
8、li- cate paste as in 7.2.1.2.1. Without altering the setting, take three readings from the duplicate paste. If the results are variable, gather up the paste and make another drawdown. These pastes are acceptable if a reading of 3,0 f 0,03 is obtained from the duplicate paste. NOTE 4 It is beneficial
9、 to have the two drawdowns side by side. 7.2.1.2.4 If these pastes are acceptable, blend the two together using a palette knife. 7.2.1.2.5 If the pastes are not acceptable, prepare a further paste and determine its reflectance using the same procedure. 7.2.1.2.6 Blend together whichever two of these
10、 three pastes do not differ by more than 0,03. 7.2.1.2.7 Determine the reflectance values of the remaining calibration pastes (see 7.1 .lO), taking three readings from each paste. 7.2.1.2.8 Plot a graph of the average readings versus the calibration tint values or determine the equation to give the
11、best fit. NOTE 5 The equation is not necessarily linear. 7.2.1.2.9 Periodically check the proper calibration and standardization of the equipment, reagents, ma- terials and method, as required, using standard refer- ence blacks (4.4). 7.2.1.3 Determination of tinting strength of a test sample 7.2.1.
12、3.1 Prepare duplicate pastes of 100 % cali- bration tint values as described in 7.1 .I to 7.1 .lO. 7.2.1.3.2 Prepare the paste and set the instrument to 3,0 as described in 7.2.1.2.1 to 7.2.1.2.6. 7.2.1.3.3 Using the correct mass of the test sample (see 7.1 .I I), prepare duplicate pastes as describ
13、ed in 7.1 .I to 7.1.9. 7.2.1.3.4 Determine the reflectance values of the pastes containing the test sample, taking three readings with each. 7.2.1.3.5 Determine the tinting strength of the test sample by using the graph or equation determined in 7.2.1.2.8. 4) The Erichsen Tint Tester is the trade-na
14、me of an apparatus supplied by Erichsen GmbH u. Co KG, 5870 Hemer-Sundwig, Germany. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by IS0 of the apparatus named. Equivalent products may be used if they can be shown to lead
15、 to the same re- sults. 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:40:44 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 5435:1994(E) 0 IS
16、0 7.2.2 Measurements using the Densichron 7.2.2.2.1.5 If the pastes are not acceptable, prepare reflectometer (film drawdown and roller spreader another paste containing 0,100 g of ITRB and check methods) using the same procedure. 7.2.2.1 Apparatus NOTE 6 For general details, see 5.1 to 5.5. 7.2.2.1
17、.1 Densichron reflectometer, for the film drawdown method. 7.2.2.2.1.6 Blend together whichever two of these three pastes do not differ by more than 0,5 %. 7.2.2.2.1.7 Determine the reflectance values of the remaining calibration pastes (see 7.1.10), taking three readings from each paste. 7.2.2.1.2
18、Film applicator, 0,08 mm gauge depth, to give 0,04 mm wet film thickness. 7.2.2.1.3 Glass plate, approximately 750 mm x 500 mm x 10 mm. 7.2.2.1.4 Tint roller spreader, for the roller spreader method. 7.2.2.2 Calibration 7.2.2.2.1 Film drawdown method 7.2.2.2.2 Roller spreader method 7.2.2.2.2.1 Usin
19、g a clean palette knife (5.4) place a portion of one of the mulled pastes of 100 % cali- bration tint value (7.1 .lO) on the clean turning roller of the tint roller spreader (7.2.2.1.4). Turn the range switch from 0 to position 2. Using the calibration control, adjust the meter to read 80 %. Turn th
20、e range switch to position 0. Clean the roller and applicator. Place a portion of the other paste having 100 % cali- bration tint value on the turning roller and turn the range switch to position 2 without altering the cali- bration control. 7.2.2.2.1.1 Clean the glass plate (7.2.2.1.3) with a tissu
21、e to remove any dust particles or film. Using a clean palette knife (5.41, place a portion of one of the mulled pastes with 100 % calibration tint value (7.1 .I 0) at the top edge of the glass plate and smear it almost to the bottom edge. Using the film applicator (7.2.2.1.2), draw down the paste to
22、 the bottom edge in about 2 s to 3 s. 7.2.2.2.1.2 Set the range switch to 2 and operate with no filter in the reflection head. Use 4,76 mm aperture if head No. 3882A is used. Place the reflectometer head on the drawdown of the paste. Adjust the meter reading to read 80 % for at least three readings,
23、 all taken at 75 mm or more from the top of the drawdown. If the results are variable, gather up the paste and make another drawdown. 7.2.2.2.1.3 Make a duplicate drawdown of the duplicate paste as in 7.2.2.2.1.1. Without altering the setting, take three readings from the duplicate paste. If the res
24、ults are variable, gather up the paste and make another drawdown. These pastes are accept- able if a reading of 80 f 0,5 is obtained from the duplicate paste. NOTE 7 It is beneficial to have the two drawdowns side by side. 7.2.2.2.1.4 If these pastes are acceptable, blend the two together using a pa
25、lette knife. 7.2.2.2.2.2 The pastes are acceptable if readings of 80 R is the reflectance of the paste with 100 % cali- bration tint value; S is the reflectance of the test sample. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
26、 Standards 1/9972545001 Not for Resale, 04/25/2007 01:40:44 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 5435:1994(E) 0 IS0 For N 500, N 600 and N 700 series carbon blacks, where 0,2 g of test sample has been used, divide the result by 2. However, if a statistical eq
27、uation is used to correct measured tint values, the values for N 500, N 600 and N 700 series carbon blacks shall be cor- rected before dividing the result by 2. 9 Test report The test report shall include the following information; a) a reference to this International Standard; b) all details necess
28、ary for the identification of the sample; c) all details necessary for the identification of the primary reference black, if not ITRB; d) the temperature used for drying the zinc oxide and the carbon black; e) the reflectance instrument used; f) the method of preparing the paste for measure- ment; g
29、) the results of replicate tests; h) any deviation from the procedures specified in this International Standard. - Glass plate (750 mm x 500 mm x 10 mm) Double thickness of adhesive tape (thickness 0.5 mm) Paste Glass slide (thickness I,22 mm) Glass slides (thickness 1.22 mm) Figure 1 - Slide prepar
30、ation apparatus for Meeco Colormaster Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:40:44 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 5435:
31、1994(E) ICS 83.040.20 Descriptors: rubber, ingredients, carbon black, tests, determination, colouring power. Price based on 6 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:40:44 MDTNo reproduction or networking permitted without license from IHS -,-,-