ASTM_D_2660_-_84_scan.pdf

ASTM D2660 84 0759530 0026547 O Designation:D 2660-84 4 T b AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Rsce St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Test Method for FINISH CONTENT OF WOVEN GLASS FABRIC,CLEANED FINISHES,FOR PLASTIC LAMINATES AND AFTER-FINISHED WITH ACRY LIC-SILANE-TY PE This standard is issued under the fixed designation D 2660,the number immediately following the designation indicates the year of original adoption or,in the ose of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.I.scope 1.1 This test method covers the measuremenf of the amount of acrylic-silane finish applied to various styles of woven giass fabric that have been suitably cleaned to remove the oils and binders present on the yarn to make them suita-ble for use in polyester laminates.NOTE 1-Some typical acrylic-silane finishes are known as 26030 and A-114.NOTE 2-This test method i s based on the use of a L e C o No.515 Conductometric Carbon Determinator and LRCO Induction Furnace,Laboratory Equipment Co.,St.Joseph,Mich.,but any t e s t method giving comparable results may be used.NOTE 3-The finish content may also be deter-mined using automatic instruments not on the market when this test method was originally written.The re-sults obtained by these instruments comply with the requirements of this test method,although the proce-dure may differ.1.2 This standard may involve hazardous ma-terials,operations,and equipment.This standard.does not purport to address all o f the safety prob-lems associated with its irse.It is the responsibil-ity o f whoever uses this standard to consult and establish appropriate safity and health practices and determine the applicability o f regulatory limi-tations prior to use.2.Applicable Document 2.1 ASTM Standard:D 4029 Specification for Finished Woven Glass Fabrics2 3.Summary of Method 3.1 Specimens are burned with iron and tin acceleratoys in the presence of oxygen.The car-bon cQntent is measured,which is a reliable indication of the amount of acrylic-silane finish on the glass fabric.4.Significance and Use 4.1 The purpose of this test method is to pro-vide a means for determining the amount of acrylic-silane finish on glass fabrics that have met the requirements of Specification D4029 and whether it has been correctly applied.It is in-tended for use in specifications,product evalua-tion,and quality control.4.2 The acrylic-sane finish enhances the handleability of the fabric and improves the mechanical properties of the glass fabric when used as a reinforcement in polyester laminates.5.Apparatus or$23.LeCo No.515.5.1 Induction Furnace,LeCo Model 521,522,9.2 Conductometric Carbon Determinator,5.3 Combustion Tube,LeCo Mo.550-120.5.4 Carbon Crucible,Quartz-Enclosed,LeCo 5.5 Tin Accelerator,Lec0 No.501-76.NO.550-182.This test method is under the jurisdiction of ASTM Com-mitfee D-20 on Plastics and is the direct responsibility of Sub-commiftee D 20.I8 on Reinforced Thennosetting Plastics.Current edition approved Feb.24,1984.Published June 1984.Onghally published as D 2660-67 T.Last previous edi-tion D 2660-82.Annital Book ofASTM Siandards,Vol 07.02.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM D2bb0 84 S 0759530 002b548 2 W 5.6 Iron Accelerator,LeCo No.501-77.5.7 Crucibles,LeCo No.528-25.These cru-cibles are to be preignited at 1205OC(2200OF)in a tube furnace through which a stream of oxygen i s flowing.After burning,the crucibles must be handled with tongs to prevent contam-ination with o i l from the skin;the crucibles shall then be stored in a desiccator.5.8 Tube Furnace.5.9 Variable Transformer.5.10 Caution-Before attempting this deter-mination,the analyst must be thoroughly fa-miliar with the“Instruction Manual fr Oper-ation of LeCo No.515 Conductometric Carbon Determinator”and the“Instruction Manual for Operation of LeCo Induction Furnace.”Principles of the method are explained in the manuals.6.Reagents and Materials 6.1 Barium Hydroxide Solution-See“In-struction Manual for Operation of Lec0 No.515 Conductometric Carbon Determinator,”6.2 Mercuty 6.3 Oxygen,cylinder.6.4 Standard Steel,NBS 166A.7.Procedure-7.1 Assemble the apparatus in accordance with Fig.V,“S”modification of the“In-struction Manual for Operation of LeCo Induc-tion Furnaces.”7.2 Using a quartz-enclosed carbon crucible,blank out the combustion tube until a resistance of 0.5 C l or less is obtained.Use a variable transformer to adjust the plate current to 400 m44.NOTE 4 4%the“Instruction Manual for Opera-tion of L e C o No.515 Conductometric Carbon Deter-minator.”7.3 Weigh 1.50 f 0.02 g of iron accelerator and mix with one scoop(approximat