1、Designation: D 2383 09Standard Practice forTesting Plasticizer Compatibility in Poly(Vinyl Chloride)(PVC) Compounds Under Humid Conditions1This standard is issued under the fixed designation D 2383; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This practice defines the conditions for the exposure andqualitative evaluation of poly(v
3、inyl chloride) (PVC) com-pounds for plasticizer compatibility under humid conditions.Change in appearance is used for judging compatibility.1.2 The text of this practice references notes and footnotesthat provide explanatory material. These notes and footnotes(excluding those in tables and figures)
4、shall not be consideredas requirements of this practice.1.3 The values stated in SI units are to be regarded asstandard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-pr
5、iate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 1There is no known ISO equivalent to this practice.2. Referenced Documents2.1 ASTM Standards:2D 883 Terminology Relating to PlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasti
6、csD 1755 Specification for Poly(Vinyl Chloride) ResinsE 145 Specification for Gravity-Convection and Forced-Ventilation Ovens3. Terminology3.1 GeneralDefinitions are in accordance with Terminol-ogy D 883 and abbreviations with Terminology D 1600, unlessotherwise indicated.4. Summary of Practice4.1 S
7、pecimens are suspended over water in closed contain-ers and aged at either 60C or 80C. The specimens areremoved from the containers at specified intervals and theirappearance is rated in accordance with 10.1 and recorded.5. Significance and Use5.1 This practice provides an accelerated method for det
8、er-mining the stability of PVC compounds with respect toplasticizer compatibility under humid conditions.5.2 The temperatures and humidity employed in this test canrepresent actual use conditions, but are intended primarily forrating materials.6. Apparatus6.1 Screw-Cap Glass Jars or Capped Metal Con
9、tainers,large enough to avoid contact between specimens and betweenthe specimens and 1 cm of deionized water. The covers shall beprovided on the inside with hooks of a corrosion-resistantmetal such as stainless steel, nichrome or nickel.6.2 Forced-Ventilation Laboratory Oven, Type II, Grade A,in acc
10、ordance with Specification E 145.7. Materials7.1 Distilled WaterFreshly prepared distilled or deionizedwater.8. Specimen Preparation (Note 2)8.1 Cut test specimens with one side having a surface areaof 25 cm2from a 0.5-mm (0.02-in.) thick smooth surfaceplastic sheet (60.05 mm (0.002-in.) Punch a sma
11、ll hole nearthe edge for hanging the specimen.1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials(Section D20.15.07).Current edition approved Sept. 1, 2009. Published September 2009. Originallyapp
12、roved in 1969. Last previous edition approved in 2001 as D 2383 - 97(2001).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe
13、 ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 2For use as a control in testing the relative performance ofplasticizers, the following clear formul
14、ation may be employed.PartsGeneral-Purpose PVC Resin:Type GP 40000 as defined in Specification D 1755. 100Plasticizer:Di-2-ethylhexyl phthalate 50Stabilizer:Weatherable BaZn 1NOTE 3The test compound suggested in Note 2 will not exude undereither test temperature specified in 9.2.9. Procedure9.1 Susp
15、end the specimens from hooks over 1-1.3 cm ofdistilled water in closed containers so that they do not touch thewater layer, sides of the container, or each other.9.2 Place the containers in the circulating-air oven (see 6.2)at either 60 6 1C or 80 6 1C, depending upon whichtemperature is specified i
16、n the applicable material specifica-tion. Put covers on loosely until the containers come totemperature equilibrium, then tighten covers.9.3 Remove the containers from the oven at specifiedintervals. Under normal inspection, the intervals for plasticizedPVC are:9.3.1 At 60C, once a week for a total
17、of 4 weeks.9.3.2 At 80C, 1, 3, 7, 10, and 14 days.9.4 After allowing to dry, examine the specimens forevidence of exudation and record their appearance.9.5 Replace the specimens in the original containers andcontinue the test for the specified period of time.10. Ratings10.1 The following visual and
18、tactile ratings are used forjudging plasticizer compatibility:10.1.1 None (Dry)No evidence of exudation.10.1.2 Slight (Tacky)Slight exudation resulting in asticky specimen surface.10.1.3 Moderate (Greasy)Thin film of exuded plasticizercovers specimen surface. Film may be greasy, oily, or waxy.10.1.4
19、 Heavy (Wet)Droplets of exuded plasticizer accu-mulated on specimen surface. Specimen may be blistered.11. Report11.1 The report shall include the following:11.1.1 Sample identification,11.1.2 Temperature of test, and11.1.3 Rating and appearance of the specimen at the end ofeach test interval.12. Pr
20、ecision and Bias12.1 No precision and bias data are available due to subjec-tive nature of determining the test results.13. Keywords13.1 compatibility; plasticizer; poly(vinyl chloride) (PVC)SUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the la
21、st issue(D 2383 - 97(2001) that may impact the use of this standard. (September 1, 2009)(1) Removed F measurements.(2) Changed subcommittee section in Footnote 1 fromD20.15.11 to D20.15.07.(3) Added a materials section (Section 7) for distilled water.(4) Changed stabilizer in Section 8 from BaCd sol
22、id to BaZn.(5) Added depth of water in 9.1.(6) Added “After allowing to dry” to 9.4.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the
23、 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 years andif not revised, either reapproved or withdrawn. Your
24、 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 committee, which you may attend. If you feel that your comments
25、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).D2383092
