ASTM_D_1636_-_21.pdf

Designation:D163621Standard Specification forAllyl Molding Compounds1This standard is issued under the fixed designation D1636;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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 specification covers compression molding,thermosetting,allyl compounds as further defined in Section 4.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.NOTE1The properties included in this specification are those requiredto identify the molding compounds covered.There may be other require-ments necessary to identify particular characteristics.These will be addedto the specification as their inclusion becomes generally desirable and thenecessary test data and methods become available.NOTE2There is no known ISO equivalent to this standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD229 Test Methods for Rigid Sheet and Plate MaterialsUsed for Electrical InsulationD256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD618 Practice for Conditioning Plastics for TestingD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD883 Terminology Relating to PlasticsD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics(Oxygen Index)D3892 Practice for Packaging/Packing of PlasticsD5224 Practice for Compression Molding Test Specimens ofThermosetting Molding Compounds3.Terminology3.1 DefinitionsDefinitions of terms used in this specifica-tion are in accordance with Terminology D883.4.Classification4.1 This specification provides for the identification of threetypes of allyl molding compounds,based on the general type offiller employed in their manufacture,which shall be distin-guished by the requirements prescribed in Table 1.Type IHigh-strength materials,glass-fiber reinforced.Type IIGeneral-purpose mineral filled.Type IIIGeneral-purpose synthetic fiber filler.4.2 Types I and II may be subdivided into four classesaccording to resin composition and use as follows:Class ADiallyl ortho-phthalate resin,nonflame-retardant.Class BDiallyl ortho-phthalate resin,flame-retardant.Class CDiallyl meta-phthalate resin nonflame-retardant.Class DDiallyl meta-phthalate resin,flame-retardant.4.3 The four classes of Type I are subdivided as follows:ClassesA,B,C,and D into four grades.For Type II each of thefour classes is subdivided into two grades.For Type III onlyClass A compounds are produced and are available in threegrades.5.General Requirements5.1 The molding compound shall be of uniform compositionand so compounded as to conform to the requirements of thisspecification.5.2 Although other than allyl resin may be added for flameresistance and other purposes,the major part of the resinportion shall be diallyl ortho-phthalate or diallyl meta-phthalate.5.3 The apparent density,bulk factor,particle size,physicalform,and color of the compounds shall be as agreed uponbetween the purchaser and supplier.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.16 on ThermosettingMaterials.Current edition approved July 1,2021.Published August 2021.Originallyapproved in 1959.Last previous edition approved in 2013 as D1636-13.DOI:10.1520/D1636-21.2For 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 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.16.Detail Requirements6.1 Average results obtained on test specimens,eachcompression-molded using the manufacturers recommendedtechniques,shall conform to the requirements listed in Tabl