1、Designation:D 4639 86(Reapproved 1996)Standard Test Method forVolatile Content in Phenolic Resins1This standard is issued under the fixed designation D 4639;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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of matter in asolid phenolic resin that is volatile at 300F(150C).1.2 This standard does not pur
3、port 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 and determine the applica-bility of regulatory limitations prior to use.2.Summary of Test Method2.1 Aspecified weight of
4、 resin is added to a tared aluminumdish and weighed.The resin is then heated for 2 h in an ovenat 300F(150C)and reweighed.3.Significance and Use3.1 Volatile material causes problems when phenolic resinsand varnishes are heated at temperatures above 300F(150C).Heating a specified weight of resin for
5、2 h at this temperatureindicates the amount of volatile material emitted when moldingor curing phenolic resins.4.Apparatus4.1 Analytical Balance,capable of weighing to 0.1 mg.4.2 Thermometer,glass,having a range from 1 to 200C andaccurate to 1C.4.3 Circulating Oven,maintained at 300 6 3.5F(150 62C).
6、4.4 Aluminum Drying Dishes,212-in.(63 mm)diameter,34-in.(20 mm)depth or equivalent.4.5 Desiccator.5.Procedure5.1 Mark two aluminum dishes for identification of eachresin being tested and weigh them on the analytical balance to0.1 mg.Record as w1.5.2 Weigh a 5-g specimen of resin to 0.1 mg into eacha
7、luminum dish.Record total weight as w2.5.3 Place the dishes in the oven for 2 h at 300F(150C).5.4 Remove from oven and immediately place in desiccatoruntil they cool to room temperature.Reweigh immediatelyupon removal from the desiccator and record as w3.6.Calculation6.1 Calculate the volatile conte
8、nt,V,as follows:V,%5 100 2Fw32 w1w22 w13 100Gwhere:w15 weight of aluminum dish,g,w25 weight of aluminum dish and specimen used,g,andw35 weight of aluminum dish and specimen after 2 h inoven,g.7.Report7.1 Report the following information:7.1.1 Resin identification,time,and temperature.7.1.2 Percent o
9、f volatile matter,or volatile content(averageof duplicate determinations).8.Precision and Bias8.1 The precision and bias for this method have not beendetermined.9.Keywords9.1 phenolic resins;volatile contentThe American Society for Testing and Materials takes no position respecting the validity of a
10、ny patent rights asserted in connectionwith any item mentioned in this standard.Users of this standard are expressly advised that determination of the validity of any suchpatent rights,and the risk of infringement of such rights,are entirely their own responsibility.This standard is subject to revis
11、ion 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 either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters.Your comments will rece
12、ive careful consideration at a meeting of the responsibletechnical committee,which you may attend.If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards,100 Barr Harbor Drive,West Conshohocken,PA 19428.1This test method is u
13、nder the jurisdiction of ASTM Committee D-1 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.33 on Polymers and Resins.Current edition approved Nov.28,1986.Published January 1987.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTM
