1、Designation: D 3030 95 (Reapproved 2006)Standard Test Method forVolatile Matter (Including Water) of Vinyl Chloride Resins1This standard is issued under the fixed designation D 3030; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、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 the quantitative determinationof the volatile matter (including water) present in
3、 vinylchloride resins.1.2 The values stated in SI units are to be regarded asstandard.1.3 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-priate safety and health practices a
4、nd determine the applica-bility of regulatory limitations prior to use.NOTE 1This test method and ISO 12691980 are identical in alltechnical details.2. Referenced Documents2.1 ASTM Standards:2D 618 Practice for Conditioning Plastics for TestingD 883 Terminology Relating to PlasticsD 1600 Terminology
5、 for Abbreviated Terms Relating toPlasticsE 145 Specification for Gravity-Convection And Forced-Ventilation Ovens2.2 ISO Standard:ISO 12691980 Homopolymer and Copolymer Resins ofVinyl ChlorideDetermination of Volatile Matter Includ-ing Water33. Terminology3.1 Definitions: Definitions are in accordan
6、ce with Defini-tions D 883 and Terminology D 1600, unless otherwise indi-cated.4. Summary of Test Method4.1 This test method consists of heating at 110C a knownquantity of powdered resin to constant mass. The calculatedmass loss defines quantitatively the volatile matter present inthe sample.5. Sign
7、ificance and Use5.1 The quantity of volatile components in a vinyl chlorideresin can be established by this test method. This test methoddoes not identify the components.6. Apparatus6.1 OvenA forced-ventilation oven conforming to therequirements for Type IIA in Specification E 145. The ovenshould be
8、 capable of maintaining a temperature of 110 6 1Cwhen the damper is half open and the vent is wide open.6.1.1 The oven shall be equipped with a calibrated ASTMthermometer and the proper stem correction shall be applied tothe temperature measurement.6.1.2 The oven temperature shall be controlled by a
9、naccurate, reliable thermoregulator, maintaining the set pointwithin 60.5C or better.6.1.3 The inside of the oven shall be free of contaminationor surface deposits. Stainless steel oven liners should be usedto reduce corrosion due to continued exposure to decomposi-tion gases.6.2 Sample ContainerA w
10、eighing vessel of low shapedesign in glass, aluminum, or stainless steel of sufficient size tohold a 10-g resin sample. An aluminum weighing dish, 57 mmin diameter and 18 mm in depth, is suitable.6.3 BalanceAweighing balance with a precision to within0.001 g.7. Preparation of Apparatus7.1 Maintain t
11、he oven at the temperature of the test for atleast 1 h prior to insertion of the specimens.7.2 Prior to test operation, verify the uniformity of tempera-ture within the oven according to Specification E 145. Theairflow in the oven should be greater than 0.3 m3/min (10ft3/min).NOTE 2The temperature u
12、niformity can also be verified by placing 5or more portions of the same resin sample in the oven, distributed over the1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials(Section D20.15.08).Cur
13、rent edition approved May 1, 2006. Published June 2006. Originallyapproved in 1972. Last previous edition approved in 2000 as D 3030 - 95 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards
14、volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United S
15、tates.test area, following Section 8. Calculate the percent of volatile loss(Section 9). If the differences in the volatile loss of the samples exceed thetest reproducibility, the temperature in the oven is not uniform and mustbe corrected before proceeding with the test.8. Procedure8.1 Dry the weig
16、hing vessel in the oven at 110 6 1C for 30min and cool to room temperature in a desiccator. Tare theweighing vessel to the nearest 0.001 g.8.2 Spread approximately 10 g of sample resin evenly overthe bottom of the weighing vessel and weigh to the nearest0.001 g. Record the sample mass.8.3 Place the
17、resin-filled weighing dish in the oven con-trolled at 110 6 1C and close the oven.8.4 After 1 h, remove the weighing dish, cool to roomtemperature in a desiccator, and weigh to the nearest 0.001 g.Return the weighing dish to the oven and heat for an additional15 min, cool to room temperature in the
18、desiccator, andre-weigh. Constant mass is reached when the successiveweighing differs by 0.001 g or less; if the mass variation isgreater than 0.001, continue the 15 min heating-weighing cycleuntil constant mass is obtained.NOTE 3Prompt weighing after removal of the dish from desiccatorwill improve
19、accuracy.8.5 Test a minimum of two samples, and average the results.9. Calculation9.1 For each determination calculate the mass percent ofvolatile matter present as follows:M 2 M8!/M 3 100where:M and M8 = respectively, the mass before and after heatingof the resin determined at room temperature (ate
20、mperature in the range from 20 to 30C (68to 85F), as defined in Methods D 618).10. Report10.1 Report the following information:10.1.1 The arithmetic average of the determinations to thenearest 0.01 mass %.11. Precision and Bias411.1 The following should be used for judging the accept-ability of resu
21、lts (95 % confidence limits):11.2 ReproducibilityThe average of two determinationsreported by one laboratory should be considered suspect if itdiffers from that of another laboratory by more than 22 %relative.11.3 RepeatabilityThe average of two determinations ob-tained on two separate days at the s
22、ame laboratory on the samesample should be considered suspect if it differs by more than4.4 % relative.11.4 BiasNo justifiable statement of bias can be made forthis test method, since the true value of the property cannot beestablished by an accepted referee method.NOTE 4Other techniques of volatile
23、 determinations may be substi-tuted at the option of the purchaser and seller, such as the use of asemi-automatic moisture tester or a procedure employing an infrared lampas a heating source. With such methods, the temperature of the heatedsample must be maintained at 110 6 1C.12. Keywords12.1 moist
24、ure content; test method; vinyl chloride resins;volatile matterASTM 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 validity of any such
25、 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 comments are invited
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27、air 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 s
28、tandard 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).4Round-robin data for this test method may be obtained from ASTM Headquar-ters. Request RR: D20-1025.D 3030 95 (2006)2
