1、Designation:D125906(Reapproved 2018)Standard Test Methods forNonvolatile Content of Resin Solutions1This standard is issued under the fixed designation D1259;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、 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 U.S.Department of Defense.1.Scope1.1 These test methods cover the determination of nonvola
3、-tile content of solutions of resins in volatile organic solvents.1.2 Two test methods are included as follows:1.2.1 Test Method AFor solutions of non-heat-reactiveresins.These solutions contain resins that remain stable andrelease the solvent under conditions of the test.Examples areester gums and
4、alkyds.1.2.2 Test Method BFor two types of solutions:1.2.2.1 Solutions of heat-reactive resins.These solutionscontain resins that undergo condensation or other reactionsunder the influence of heat.Examples include the formalde-hyde reaction products of urea,melamine,and phenols.1.2.2.2 Solutions tha
5、t release solvent slowly.Examplesinclude epoxy resin solutions.1.3 Test Methods A and B differ primarily in the dryingtimes and types of oven used.1.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.5 This standard does not pu
6、rport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility 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.1.6 This international standard w
7、as developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Summary of
8、Test Methods2.1 In both test methods,a weighed specimen of resinsolution is spread under pressure between two weighed sheetsof aluminum or tin foil.The coated foil sheets are separatedand then dried.The weight of residue is determined and thenonvolatile content is calculated.The test method is uniqu
9、e inthat it provides for drying of a very thin film of resin,thusminimizing chances for volatiles to be trapped and held duringthe heating operation.2.2 Either a gravity-convection or a forced-ventilation ovenand a 30-min heating period at 105C are used in Test MethodA.2.3 A forced-ventilation oven
10、and a 2-h heating period at105C are used in Test Method B.3.Significance and Use3.1 The nonvolatile content of resin solutions is useful tocoatings producers and users for the determination of the totalsolids available for film formation and for the estimation of thevolatile organic content.TEST MET
11、HOD ANON-HEAT-REACTIVE RESINSOLUTIONS4.Apparatus4.1 Ovens:4.1.1 Gravity-convection type,maintained at 105 6 2C,with vents open.4.1.2 Forced-ventilation type,maintained at 105 6 2C.Forovens with adjustable air flow rate,set the control damper at50%.4.2 Aluminum or Tin Foil,from 38 to 50 m(0.0015 to0.
12、0020 in.)in thickness.Either one piece 150 by 300 mm(6 by12 in.),or two 150 by 150-mm(6 by 6-in.)pieces may be used.The foil must be perfectly smooth;if it becomes wrinkledduring the initial handling,roll smooth as directed in 5.2.4.3 Plate GlassTwo pieces about 5 mm(316in.)thick;onepiece 140 by 140
13、 mm(512by 512in.)and one piece 180 by 180mm(7 by 7 in.).4.4 Device for Weighing Specimens2Apparatus that willprevent loss of volatile matter during the weighing operationsuch as any of the following,or equivalent:1These test methods are under the jurisdiction of ASTM Committee D01 onPaint and Relate
14、d Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.21 on Chemical Analysis of Paints and PaintMaterials.Current edition approved June 1,2018.Published June 2018.Originallyapproved in 1953.Last previous edition approved in 2012 as D1259 06(2012).DOI:10.1520/D12
15、59-06R18.2The bulb pipet is available from most scientific supply houses.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization e
16、stablished in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.4.1 Syringe,Luer,2 or 5-mL capacity,4.4.2 Weighing Buret,Smith,10-mL capacity,or4.4.3 Bulb Pipet,dropping,with 50-mL Erlenmeyer flask.4.5 Roller,for Smoothing FoilUse a ground and polishedcylinder,preferably stainless steel,approximately 7 in.(180mm)long and 2 in.(50 mm)in diameter.4.6 Foil Trays,two
