1、Designation: D2383 14Standard Practice forTesting Plasticizer Compatibility in Poly(Vinyl Chloride)(PVC) Compounds Under Humid Conditions1This standard is issued under the fixed designation D2383; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 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(vin
3、yl 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) sh
4、all 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-pria
5、te 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:2D883 Terminology Relating to PlasticsD1600 Terminology for Abbreviated Terms Relating to Plas-tics
6、D1755 Specification for Poly(Vinyl Chloride) ResinsE145 Specification for Gravity-Convection and Forced-Ventilation Ovens3. Terminology3.1 GeneralDefinitions are in accordance with Terminol-ogy D883 and abbreviations with Terminology D1600, unlessotherwise indicated.4. Summary of Practice4.1 Specime
7、ns 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 deter-min
8、ing 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 Container
9、s,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 accordanc
10、e with Specification E145.7. 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 small hole
11、 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 March 1, 2014. Published March 2014. Originallyapproved in 19
12、69. Last previous edition approved in 2009 as D2383 - 09. DOI:10.1520/D2383-14.2For 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 o
13、nthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 2For use as a control in testing the relative performance ofplasticizers, the following clear form
14、ulation may be employed.PartsGeneral-Purpose PVC Resin:Type GP 40000 as defined in Specification D1755. 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 Sus
15、pend 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
16、in 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 a stickyspecimen surface.10.1.3 Moderate (Greasy)Thin film of exuded plasticizercovers specimen surface. The film will appear to be greasy,oily,
19、 or waxy.10.1.4 Heavy (Wet)Droplets of exuded plasticizer accu-mulated on specimen surface.NOTE 4The 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 ofe
20、ach test interval.12. Precision 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 th
21、is standard since the last issue (D2383 - 09)that may impact the use of this standard. (March 1, 2014)(1) Removed permissive language from 10.1.3. (2) Moved second sentence of 10.1.4 to Note 4.ASTM International takes no position respecting the validity of any patent rights asserted in connection wi
22、th any item mentionedin this standard. Users of 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 tech
23、nical committee and must be reviewed every five 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 considerat
24、ion at a meeting of theresponsible technical committee, 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 Ha
25、rbor 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D2383 142
