ASTM D1514-15(R2020) pdf free download

ASTM D1514-15(R2020) pdf free download.Standard Test Method for Carbon Black—Sieve Residue
1. Scope
1.1 This test method covers the determination of the water wash sieve residue in regular untreated carbon blacks. It may not be applicable to oil-treated carbon blacks because the oil would prevent proper wetting of the black by water. 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 6. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Summary of Test Method
3.1 A sample of carbon black is washed with water through a wire-mesh screen of a specified size until all that remains is a non-carbon black residue. This residue is dried, weighed, and the amount of residue is expressed as mg/kg (ppm) of the original sample.
4. Significance and Use
4.1 The quantity of sieve residue of carbon black is impor- tant in some molded or extruded products as it may relate to the surface appearance ofthose products. The maximum residue in each application is normally determined and agreed to between the user and the producer.
5. Apparatus
5.1 Sieve and Filtering Apparatus, 3, 4 as shown in Fig. 1. 5.2 Balance, with a sensitivity of 0.01 g. 5.3 Analytical Balance, with a sensitivity of 0.1 mg. 5.4 Oven, gravity-convection type, capable of temperature regulation within 61°C at 125°C and temperature uniformity within 65°C. 5.5 Sieves, of either phosphor bronze or stainless steel. The sieve shall be in accordance with Specification E11. The sieve to be used shall be agreed upon between the purchaser and the seller. 5.6 Weighing Dishes.
9. Procedure
9.1 Prior to making a test, clean the strainer by opening valves A and B and closing valve C as shown in Fig. 1. Allow the strainer to wash for 2 min. 9.2 Close valve B and open valve C. With valves A and C completely open, regulate the water pressure by means of a reducing valve. The recommended water pressure is 207 6 34 kPa (30 6 5 lbf/in. 2 ). 9.3 After the water pressure has been regulated, attach the sieve holder with a 50-mm (2-in.) diameter sieve to the funnel and allow the water to run through it for 3 min. Stop the water flow by closing valves A and C. Examine the sieve for particles; if none are observed, the apparatus is ready for use. 9.4 Weigh 100.0 g of the carbon black on the balance. 9.5 Attach the proper sieve to the funnel and start the water flow by opening valves A and C. 9.6 Add the carbon black slowly to the funnel to prevent plugging of the sieve. N OTE 1—Ifdesired it is permissible to utilize wetting agents to facilitate dispersion. Care must be taken to ensure that all of the solid material is transferred from the vessel used for dispersing the black into the funnel of the washing apparatus. 9.7 Use a gentle stream of water from the hose attached to valve D to wash down any carbon black on the sides of the funnel. 9.8 Continue washing until the wash water coming through the sieve is clear. 9.9 Remove the sieve holder and sieve from the funnel and rub the residue lightly with the finger to disaggregate any hard carbon black lumps which may not have been thoroughly wet by the water. 9.10 Replace the sieve holder and sieve and wash for an additional 2 min. 9.11 Remove the sieve holder and sieve and dry for 1 h at 125°C. 9.12 Transfer the dried residue to a piece of smooth white bond paper and rub gently to remove any carbon black remaining on the residue. Rub until the white paper no longer shows any smears. N OTE 2—The purpose of gently rubbing the residue is to remove any black that may be clinging to the gritty residue.