1、Designation: D 5062 96 (Reapproved 2001)Standard Test Method forResin Solution Dilutability by Volumetric/GravimetricDetermination1This standard is issued under the fixed designation D 5062; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers both volumetric and gravimetricdetermination of resin solution dilutabili
3、ty which gives anumerical value for the overall solubility of the resin expressedas percent dilutability.1.2 This test method is applicable only if the test solution isof sufficient clarity to allow accurate visual judgement of theend point and of low enough viscosity for efficient mixing totake pla
4、ce.1.3 This test method is primarily for, but not limited to,resins used in the printing ink industry.1.4 The percent solvent tolerance of a resin can be deter-mined using this test method if the solvent in the resin solutionand the dilution solvent are the same.1.5 This standard does not purport to
5、 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:D 1725 Tes
6、t Method for Viscosity of Resin Solutions2E1 Specification for ASTM Thermometers33. Terminology3.1 Definition of Term Specific to This Standard:3.1.1 resin solution dilutabilitythe maximum amount ofdiluent tolerated to reach a defined degree of turbidity; beyondthis point, resin precipitation will o
7、ccur.4. Summary of Test Method4.1 Asample of resin solution is weighed into a glass beakerthat is placed over a piece of 10 point print (standardnewspaper print).4.2 The dilution solvent is added slowly from a buret untilthe newsprint can no longer be read (cloud point) when viewedfrom the top of th
8、e beaker.4.3 The solvent dilutability is calculated by weight, orvolume.5. Significance and Use5.1 This test method provides a means for resin producersand users as well as solvent and varnish manufacturers to ratevarious types of resins for solubility by assigning a numericaldilutability value. Thi
9、s percent dilutability value can be used todifferentiate resin types for end users and can be utilized as aquality control tool by resin manufacturers.5.2 When running a series of these tests the same lot orbatch of dilution solvent must be used throughout to ensurereproducible results.6. Apparatus6
10、.1 Glass Beaker, 150-mL (51-mm diameter, 79-mmheight).6.2 Graduated Buret,50mL.6.3 Constant Temperature Water Bath at 25C.6.4 Thermometer, 0 to 40C range with subdivisions of0.5C conforming to Specification E1.6.5 Magnetic Stirring Bar and Stirring Plate or StirringRod.6.6 Sheet of Newsprint, with 1
11、0-point (Note), No. 31 old-style type, lower case letters 1.5-mm high with normal spacing,upper and lower case with no italicized or bold letters.NOTE 1The term point is derived from theAmerican Point System. 72points = 1 in.7. Reagents and Materials7.1 Resin SolutionAresin solution prepared in such
12、 a wayas to provide an accurate percent solids and to have sufficientclarity to allow accurate visual judgment of the cloud point.The solution must also have low enough viscosity at 25C toallow efficient mixing during the addition of the dilutionsolvent.1This test method is under the jurisdiction of
13、 ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.37 on Ink Vehicles.Current edition approved July 10, 1996. Published September 1996. Originallypublished as D 5062 90. Last previous edition D 5062 90e1.2Annual Book of A
14、STM Standards, Vol 06.03.3Annual Book of ASTM Standards, Vol 14.03.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 Dilution SolventThe dilution solvent for this test istypically, but not limited to, a hydrocarbon. The dilutionsol
15、vent should have minimal loss by evaporation at roomtemperature, and be agreed upon between the purchaser and thesupplier.7.3 Standard Ink Oils.8. Procedure8.1 Preparation of Resin Solution:8.1.1 The resin solution may be prepared by either heatingthe resin/solvent combination as described in Test M
16、ethodD 1725, or dispersing using a high-speed mixer such as ablender. Please note results may vary dependent on method ofpreparation.8.1.2 The ratio of resin to solvent in the preparation shouldcorrespond as much as possible to the intended end use of thematerial, but should be chosen to avoid diffi
17、culty in effectingsolution at a low enough viscosity for efficient mixing duringdilution.8.1.3 The precision of weighing the resin and solvent shouldensure a maximum deviation of 61 % in the desired concen-tration. This percent solids must not be altered during resinsolution preparation by solvent l
18、oss.8.2 Weigh a 150-mL glass beaker with the magnetic stirrerbar or stirring rod. Record this tare weight as W1.8.3 Accurately weigh 10 6 0.1 g of the resin solution intothe beaker. Record this sample weight as W2.8.4 Place the beaker in a 25C constant temperature bathuntil the resin solution reache
19、s 25 6 1C as measured with thethermometer specified in 6.4.8.5 Prepare the dilution solvent by bringing it to a tempera-ture of 25 6 1C before adding it to the buret.8.6 Place the beaker over the piece of 10-point print andbegin adding solvent slowly (5 to 6 mL/min) while stirring.Ensure that the sa
20、mple temperature remains at 25 6 1C,which may require periodic return of the beaker to the waterbath. If the sample has started to form a haze it should not bereturned to the water bath.8.7 Observe the 10-point print from the top of the beakerlooking through the solution.8.8 If the resin solution be
21、gins to cloud, add solvent slowlyone drop at a time while continuing to mix. Do not return thesample to the water bath at this point. If more than 100 g isrequired, the resin solution can be considered infinitely solubleunless otherwise specified in an agreement between the pur-chaser and supplier.8
22、.9 The end point is reached when the 10-point print cannotbe read looking through the solution from the top of the beaker.8.10 Record the final weight of the beaker and its contents(W3).8.11 Record the sample temperature at the end point.9. Calculation9.1 Calculate the percent resin solution dilutab
23、ility, D,asfollows:D 5W32 W11 W2!W23 100 (1)9.2 Calculate the percent solvent tolerance of the resin, S,(percent resin solids at cloud point) as follows:T 5W23 S/100!#W21 W32 W11 W2!#3 100 (2)where S = resin in solution, %.10. Report10.1 Report the following information:10.1.1 The identification of
24、the resins and the solvent in thesolution as well as the dilution solvent,10.1.2 The method used to prepare the resin solution,10.1.3 The percent solids of the resin solution, and10.1.4 The percent resin dilutability value or volume ofsolvent added per weight solution, and operating conditionsinclud
25、ing air temperature, relative humidity, initial resin solu-tion temperature, final resin solution temperature, initial dilu-tion solvent temperature, and final dilution solvent tempera-ture.11. Precision11.1 An interlaboratory study was conducted in which oneoperator in each of eight laboratories de
26、termined the percentdilutability of two common resin solutions and two dilutionsolvents completed in duplicate on two different days. Thepooled within-laboratory standard deviation was found to be3.25 % of the value measured with 12 df. The between-laboratory standard deviation was 7.63 % of the val
27、ue mea-sured with 28 df. Based on these standard deviations, thefollowing criteria should be used for judging the acceptabilityof results at the 95 % confidence level.11.2 RepeatabilityTwo results, each the mean of duplicatedeterminations, obtained by the same operator should beconsidered suspect if
28、 they differ by more than 9.19 % of thevalue measured.11.3 ReproducibilityTwo results, each the mean of dupli-cate determinations obtained by operators in different labora-tories, should be considered suspect if they differ by more than23.38 % of the value measured.12. Keywords12.1 dilutability valu
29、e; percent dilutability; printing inkresins; resins; resin solution cloud point; resin solution di-lutability; solvent toleranceD 5062 96 (2001)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of
30、this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five
31、years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical com
32、mittee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 5062 96 (2001)3
