1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 746F Polymeric Materials Flexible Dielectric Film Materials for Use in Printed-Wiring Boards and Flexible Materials Interconnect ConstructionsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
2、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Polymeric Materials Flexible Dielectric Film Materials for Use in Printed-Wiring Boards and Flexible Materia
3、ls Interconnect Constructions, UL 746F Second Edition, Dated January 13, 2012 SUMMARY OF TOPICS This new edition of ANSI/UL 746F includes changes to the following requirements: Revision of Requirements for Testing Conditions Described in Paragraph 4.2 Revision of Requirement for IR Analysis Adhesive
4、 Only Specied in Table 8.2 Clarication of Sample Requirements for Bond Strength Test Specied in Paragraphs 14.3.1 and 14.5.7 Addition of Requirements for Evaluating Asymmetrical Construction Samples Described in Paragraphs 15.5.11 and 16.5.6 Addition of Tolerance for Dimension of Conductor Shown in
5、Figure 17.1 Revision of Requirements for the Repeated Flexing Test in Paragraph 17.5.8 The new requirements are substantially in accordance with Proposal(s) on this subject dated August 26, 2011. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or tra
6、nsmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness
7、for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representa
8、tive has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless fro
9、m and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, exce
10、pt for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and
11、 are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 13, 2012 UL 746F tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 13, 2012 UL 746F tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O
12、R DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 13, 2012 1 UL 746F Standard for Polymeric Materials Flexible Dielectric Film Materials for Use in Printed-Wiring Boards and Flexible Materials Interconnect Constructions First Edition May, 2006 Second Edition January 13, 2012 This ANSI/UL Standard fo
13、r Safety consists of the Second Edition. The most recent designation of ANSI/UL 746F as an American National Standard (ANSI) occurred on January 13, 2012. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals
14、 for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a S
15、tandard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2012 UNDERWRITERS LABORATORIES INC. ANSI/UL 746F-2012UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD
16、UCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 13, 2012 UL 746F 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Abbreviations .5 3 Units of Measurement .5 4 Measurement Accu
17、racy and Testing Conditions 6 5 References .6 6 Supplementary Test Procedures 7 7 Glossary .7 CONSTRUCTION 8 Flexible Dielectric Material Test Programs and Sample Requirements 13 8.1 General 13 8.2 Direct support requirements (DSR) 22 8.3 Polyimide ANSI-like program 23 8.4 Base materials (Dielectric
18、 lm material) 23 8.5 Conductor adhesives and conductors 26 8.6 Bonding lm (supported and unsupported) and internal bonding materials 28 8.7 Coverlay (coverlayer, coverlm and covercoat) 32 8.8 Flexible material combinations and exible mass laminate 34 PERFORMANCE 9 Short Term Performance Prole Tests
19、37 10 Long Term Thermal Aging Tests 37 11 Flammability Tests 37 12 Thermal Shock Test .38 12.1 Purpose .38 12.2 Compliance criteria .38 12.3 Test specimens 38 12.4 Test apparatus and material .38 12.5 Procedure .39 12.6 Data collection .40 13 Delamination Test 40 13.1 Purpose .40 13.2 Compliance cri
20、teria .41 13.3 Test specimens 41 13.4 Apparatus or material .42 13.5 Procedure .42 13.6 Data collection .44 14 Bond Strength Test .44 14.1 Purpose .44 14.2 Compliance criteria .45 14.3 Test samples 45 14.4 Apparatus or material .46 14.5 Procedure .46 14.6 Data collection .49 15 Ambient-bend Test 50
21、15.1 Purpose .50 JANUARY 13, 2012 UL 746F 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 15.2 Compliance criteria .50 15.3 Test specimens 50 15.4 Apparatus or material .52 15.5 Procedure .52 15.6 Data collection .54 16 Cold-Bend Test .54 1
22、6.1 Purpose .54 16.2 Compliance criteria .55 16.3 Test specimens 55 16.4 Apparatus or material .55 16.5 Procedure .55 16.6 Data collection .57 17 Repeated Flexing Test 57 17.1 Purpose .57 17.2 Compliance criteria .58 17.3 Test specimens 58 17.4 Apparatus or material .59 17.5 Procedure .60 17.6 Data
23、collection .62 18 Coverlay Lamination Test 62 18.1 Purpose .62 18.2 Compliance criteria .63 18.3 Test samples 63 18.4 Apparatus or material .63 18.5 Procedure .64 18.6 Data collection .65 MARKINGS 19 Details .65 SUPPLEMENT SA - FOLLOW-UP INSPECTION SA1 Scope SA1 SA2 Glossary SA1 SA3 Responsibility o
24、f the Manufacturer .SA2 SA4 Responsibility of the Field Representative SA3 SA5 Selection of Samples for Follow-Up Testing .SA3 SA6 Follow-Up Test Program SA4 JANUARY 13, 2012 UL 746F 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCT
25、ION 1 Scope 1.1 Flexible materials shall be dened as lms or materials exhibiting exible properties. 1.2 These requirements cover short term and long term test procedures to be used for the evaluation of exible material, lm, base material, conductor adhesive material, bonding lm, cover lay, and other
26、 thin lm materials used for parts intended for specic applications in end products. 1.3 Together with the Standards mentioned in the Supplementary Test Procedures, Section 6, these requirements provide data with respect to the physical, electrical, ammability, thermal, and other properties of the ma
27、terials under consideration and are intended to provide guidance to the material manufacturer, the fabricator, the end product manufacturer, safety engineers and other interested parties. 1.4 Compliance with these requirements does not indicate the product is acceptable for use as a component of an
28、end product without further evaluation. 1.5 These requirements do not apply to the evaluation of rigid industrial laminates having a thickness greater than 0.25 mm (0.010 inch). For materials with thicknesses greater than 0.25 mm refer to the Standard for Polymeric Materials Industrial Laminates, Fi
29、lament Wound Tubing, Vulcanized Fibre, and Materials Used in Printed Wiring Boards, UL 746E. 2 Abbreviations 2.1 The acronym FMIC appears throughout this Standard, and stands for Flexible Materials Interconnect Construction. See 7.54 for the denition of FMIC. 2.2 The acronym MOT appears throughout t
30、his Standard, and stands for Maximum Operating Temperature. See 7.56 for the denition of MOT. 2.3 The acronym RTI appears throughout this Standard, and stands for Relative Thermal Index. See 7.77 for the denition of RTI. 3 Units of Measurement 3.1 Values stated without parentheses are the requiremen
31、t. Values in parentheses are explanatory or approximate information. JANUARY 13, 2012 UL 746F 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Measurement Accuracy and Testing Conditions 4.1 A measuring device used to perform the tests req
32、uired by this Standard shall be capable of measuring the specied parameter with an accuracy within 10 percent of the measured parameter. 4.2 Unless otherwise specied in the individual test method, the standard atmospheric conditions surrounding the specimen prior to and during the test shall be betw
33、een 15C and 35C (59F and 95F) and 45 percent and 75 percent relative humidity . 5 References 5.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5.2 The following is a list of
34、 ASTM test procedures referenced in this Standard. a) ASTM D 149 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies. b) ASTM D 257 Standard Test Methods for D-C Resistance or Conductance of Insulating
35、 Materials. c) ASTM D 348 Standard Test Methods for Rigid Tubes Used for Electrical Insulation. d) ASTM D 495 Standard Test Method for High-Voltage, Low-Current, Dry Arc Resistance of Solid Electrical Insulation. e) ASTM D 570 Standard Test Method for Water Absorption of Plastics. f) ASTM D 619 Stan
36、dard Test Methods for Vulcanized Fibre Used for Electrical Insulation. g) ASTM D 882 Standard Test Method for Tensile Properties of Thin Plastic Sheeting. h) ASTM D 1224 Standard Test Methods for Zinc and Cadmium in Paper. i) ASTM D 3850 Standard Test Method for Rapid Thermal Degradation of Solid El
37、ectrical Insulating Materials by Thermogravimetric Method (TGA). j) ASTM D 5423 Standard Specication for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation. JANUARY 13, 2012 UL 746F 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
38、SSION FROM UL 6 Supplementary Test Procedures 6.1 These requirements are intended to be used in conjunction with the following requirements or standards: a) The Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94, contains methods for evaluating the am
39、mability of polymeric materials used for parts in electrical equipment. b) The Standard for Polymeric Materials Short Term Property Evaluations, UL 746A, contains short term test procedures to be used for the evaluation of materials used for parts intended for specic applications in electrical end p
40、roducts. c) The Standard for Polymeric Materials Long Term Property Evaluations, UL 746B, contains long term test procedures to be used for the evaluation of materials used for parts intended for specic applications in end products. d) The Standard for Polymeric Materials Use in Electrical Equipment
41、 Evaluations, UL 746C, contain programs for evaluating polymeric materials. UL 746C is intended for the evaluations of polymeric materials in specic applications in end products. e) The Standard for Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used
42、 in Printed-Wiring Boards, UL 746E, contain programs for evaluating polymeric materials. UL 746E is intended for the evaluation of polymeric materials in specic applications in printed wiring boards. f) The Standard for Printed Wiring Boards, UL 796, contains the minimum performance requirements for
43、 printed wiring boards. g) The Standard for Flexible Materials Interconnect Constructions, UL 796F, contains the minimum performance requirements for exible printed wiring boards and interconnect constructions. 7 Glossary 7.1 For the purposes of this Standard, the following denitions apply. 7.2 ADHE
44、SIVE A substance such as glue or cement used to join, bond, or fasten materials or objects together. 7.3 ADHESIVELESS Sputtered on or Cast on lm. Adhesiveless does not include Laminated materials. 7.4 AS-RECEIVED Specimens or samples in an unconditioned state, prior to being subject to conditioning,
45、 or without a history of conditioning. 7.5 BASE DIELECTRIC MATERIAL An organic or inorganic dielectric barrier material, used to support conductor material. 7.6 BASE MATERIAL An organic or inorganic insulating material used to support a pattern of conductor material, with or without integral adhesiv
46、e material, with or without integral conductor material. JANUARY 13, 2012 UL 746F 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7.7 BASE MATERIAL THICKNESS The thickness of the base dielectric material excluding conductive foil or materia
47、l deposited on the surfaces. If an adhesive is used for the base material, the adhesive thickness and number of sides is indicated separately. 7.8 BONDING FILM The layer of insulation used to bond discrete layers during lamination of multilayer exible printed wiring board constructions. A general te
48、rm used to describe bondply and freelm. See also Bondply and Freelm. 7.9 BONDING LAYER An adhesive layer used to bond discrete layers during lamination. 7.10 BONDPLY See Bonding Film. 7.11 BUILD-UP THICKNESS Overall thickness of a combination of materials. Unless otherwise indicated, the build-up th
49、ickness will refer to the overall thickness in the area of a exible material where no internal or external conductor material resides. 7.12 CALCULATED THICKNESS A thickness value determined by adding suggested material component thicknesses, or a thickness value determined by adding or subtracting one measured value to or from another measured value. 7.13 CAST ON COPPER Resin is cast onto copper and then polymerized (cu
