ASTM D1483-2012 Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method 《用加纳尔 科尔曼法测定颜料的吸油量的标准试验方法》.pdf
《ASTM D1483-2012 Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method 《用加纳尔 科尔曼法测定颜料的吸油量的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D1483-2012 Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method 《用加纳尔 科尔曼法测定颜料的吸油量的标准试验方法》.pdf(2页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D1483 12Standard Test Method forOil Absorption of Pigments by Gardner-Coleman Method1This standard is issued under the fixed designation D1483; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This test method covers the determination of oil a
3、bsorp-tion of pigments by the Gardner-Coleman procedure.21.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theres
4、ponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3D281 Test Method for Oil Absorption of Pigments bySpatula Rub-out3. Summary of Test Method
5、3.1 A soft paste is formed by the dropwise addition oflinseed oil to the gently stirred pigment. The amount of oilrequired to form the paste is used to calculate an oil absorptionvalue.4. Significance and Use4.1 The oil absorption value obtained by this test methodprovides information about the vehi
6、cle demand of the pigmentwhen it is used in a pigment paste. Oil absorption values can beused to characterize batches of a given pigment.4.2 This test method differs from Test Method D281 in thatD281 requires a vigorous rubbing action whereas this testmethod involves only a gentle stirring and foldi
7、ng of thepigment. Because the end points are different, the valuesobtained from the two test methods generally differ.5. Apparatus and Materials5.1 Balance, capable of weighing to 0.01 g.5.2 Glass Container, round-bottom, having a capacity of250 mL (12 pt), or a low-form 250-mL beaker.5.3 Buret, gra
8、duated in 0.1-mL divisions.5.4 Spatula, sharp-edged steel, having a blade 15 or 20 by100 mm (12 or34 by 4 in.).5.5 Linseed Oil, raw, conforming to the following specifi-cation:Specific Gravity 0.926 0.931Boiling Point 149CAcid Number 3 6 1Saponification Value 185 196Iodine Value 170 minimumGardner C
9、olor 13 maximum6. Procedure6.1 The weight of pigment used should correspond to apigment volume of 3.0 6 0.6 mL. Determine the weightneeded by multiplying 3.0 6 0.6 mL by the specific gravity ofthe pigment being tested. For example, a 20 g specimennormally is used for zinc oxide (3.6 mL 3 5.6 g/mL =
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