1、 IEC 61249-4-1 Edition 1.0 2008-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Materials for printed boards and other interconnecting structures Part 4-1: Sectional specification set for prepreg materials, unclad (for the manufacture of multilayer boards) Epoxide woven E-glass prepreg of defined fla
2、mmability Matriaux pour circuits imprims et autres structures dinterconnexion Partie 4-1: Srie de spcifications intermdiaires pour matriaux primprgns, non plaqus (pour la fabrication des cartes multicouches) Tissu de verre poxyde primprgn de type E dinflammabilit dfinie IEC 61249-4-1:2008 THIS PUBLI
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17、tactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61249-4-1 Edition 1.0 2008-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Materials for printed boards and other interconnecting structures Part 4-1: Sectional specification set for prepreg materials, unclad (for the manuf
18、acture of multilayer boards) Epoxide woven E-glass prepreg of defined flammability Matriaux pour circuits imprims et autres structures dinterconnexion Partie 4-1: Srie de spcifications intermdiaires pour matriaux primprgns, non plaqus (pour la fabrication des cartes multicouches) Tissu de verre poxy
19、de primprgn de type E dinflammabilit dfinie INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 31.180 PRICE CODE CODE PRIX ISBN 2-8318-1052-7 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique I
20、nternationale 2 61249-4-1 IEC:2008 CONTENTS CONTENTS 2 FOREWORD.3 1 Scope.5 2 Normative references .5 3 Materials and construction5 3.1 Reinforcement.6 3.2 Epoxide resin 6 4 Properties.6 4.1 Properties related to the appearance of the prepreg6 4.1.1 Dewetted areas (fish eyes) 6 4.1.2 Broken filament
21、s6 4.1.3 Distortion.6 4.1.4 Creases.6 4.1.5 Edge conditions.6 4.2 Properties related to B stage prepreg 7 4.2.1 Resin content 7 4.2.2 Treated weight.7 4.2.3 Resin flow .7 4.2.4 Scaled flow thickness 7 4.2.5 Melting viscosity8 4.2.6 Gel time.8 4.2.7 Volatile content8 4.3 Properties of prepregs after
22、curing to C stage .8 4.3.1 Electric strength 8 4.3.2 Flammability8 4.3.3 Relative permittivity and dissipation factor.9 4.3.4 Cured thickness.9 5 Delivery form9 5.1 Rolls9 5.2 Sheets.9 5.3 Cut panels.9 6 Quality assurance.10 6.1 Quality system.10 6.2 Responsibility for inspection10 6.3 Qualification
23、 inspection .10 6.4 Quality conformance inspection.10 6.5 Certificate of conformance.10 6.6 Safety data sheet 10 7 Packaging and marking 10 8 Shelf life.11 9 Ordering information.11 Bibliography12 Table 1 Flammability9 61249-4-1 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MATERIALS FOR PR
24、INTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 4-1: Sectional specification set for prepreg materials, unclad (for the manufacture of multilayer boards) Epoxide woven E-glass prepreg of defined flammability FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organi
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35、d IEC 61249-4-1 has been prepared by IEC technical committee 91: Electronics assembly technology. This bilingual version, published in 2009-08, corresponds to the English version. The text of this standard is based on the following documents: FDIS Report on voting 91/739/FDIS 91/747/RVD Full informa
36、tion on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 4 61249-4-1 IEC:2008 The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all
37、 parts belonging to the IEC 61249 series, under the general title Materials for printed boards and other interconnecting structures, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on t
38、he IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 61249-4-1 IEC:2008 5 MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES Part 4-1: Sec
39、tional specification set for prepreg materials, unclad (for the manufacture of multilayer boards) Epoxide woven E-glass prepreg of defined flammability 1 Scope This part of IEC 61249 gives requirements for properties of prepreg that is mainly intended to be used as bonding sheets in connection with
40、laminates according to IEC 61249-2-7 when manufacturing multilayer boards in line with IEC 62326-4. This material may be also used to bond other types of laminates. Prepreg according to this standard is of defined flammability (vertical burning test). The flammability rating on fully cured prepreg i
41、s achieved through the use of brominated fire retardants contained as an integral part of the polymeric structure. After lamination according to the suppliers instructions, the glass transition temperature is defined as being 120 C minimum. 2 Normative references The following referenced documents a
42、re indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61189-2:2006, Test methods for electrical materials, printed boards and other int
43、erconnection structures and assemblies Part 2: Test methods for materials for interconnection structures IEC 61189-3:1997, Test methods for electrical materials, printed boards and other interconnection structures and assemblies Part 3: Test methods for interconnection structures (printed boards) IE
44、C 61249-2-7:2002, Materials for printed boards and other interconnecting structures Part 2-7: Reinforced base materials clad and unclad Epoxide woven E-glass laminated sheet of defined flammability (vertical burning test), copper-clad IEC 62326-4, Printed boards Part 4: Rigid multilayer printed boar
45、ds with interlayer connections Sectional specification ISO 9000:2005, Quality management systems Fundamentals and vocabulary ISO 11014-1:1994, Safety data sheet for chemical products Part 1: Content and order of sections ISO 14001:2004, Environmental management systems Requirements with guidance for
46、 use 3 Materials and construction The prepreg consists of a reinforcing E-glass fabric which is impregnated with epoxide resin and partially cured to the B stage. 6 61249-4-1 IEC:2008 3.1 Reinforcement NOTE Woven E-glass is intended to be specified in the future IEC 61249-6-3. 3.2 Epoxide resin Majo
47、rity di-functional epoxide resin with a glass transition temperature of 120 C when cured according to the manufacturers recommendation. Contrast agents may be added to enhance processing such as optical inspection. Its flame resistance is defined in terms of the flammability requirements of 4.3.2. 4
48、 Properties 4.1 Properties related to the appearance of the prepreg The prepreg shall be substantially free from defects that may have an impact on the materials fitness for use for the intended purpose. For the following specific defects, the requirements given shall apply when inspection is made i
49、n accordance with IEC 61189-3, method 3V01: Visual examination 3 magnification. 4.1.1 Dewetted areas (fish eyes) Dewetted areas with a diameter 5 mm are not permissible. Dewetted areas with a diameter 5 mm are permitted to an extent of a maximum 10 fish eyes in any 300 mm 300 mm area of the prepreg. 4.1.2 Broken filaments When judging the presence of broken f
