1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 746E Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used In Printed-Wiring BoardsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC
2、TION 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 Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used In Printed-Wiring
3、 Boards, UL 746E Fifth Edition, Dated April 5, 2010 Summary of Topics: This revision of ANSI/UL 746E includes the following changes in requirements: 1. Addition of General Description of Application-Specic Test Programs as Paragraph 7.1 and New Table 7.1 2. Clarication of Requirements of Tables 7.2
4、(Formerly Table 7.1) and 8.2 3. Addition of Glossary Terms to Section 2 and Revision of Requirements for Sample Orientation in Section 7 4. Transfer of Generic Test Method Descriptions to Section 7 (General) 5. Addition of Requirements for Polymer Variations to Section 7 and Deletion of Paragraph 7.
5、8 6. Change of References to LTTA Evaluations in Paragraph 8.5 7. Addition of Requirements for Ultrathin Laminate Evaluations to Section 10 8. Clarication of Requirements for Dissimilar Material Test Method Specied in Paragraph 17.9.2.1 9. Clarication of Requirements for Metal Base Laminate Evaluati
6、ons Specied in Section 20 10. Clarication of Requirements for Metal Base Laminates Using UL/ANSI Dielectric Material Specied in Section 20.2 11. Clarication of Requirements for Permanent Coating Samples in Paragraphs 21.1.1 and 22.2.1 12. Update of Follow-Up Test Program Described in Supplement SA T
7、ext that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on whi
8、ch the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 19, 2012 and July 12, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any fo
9、rm by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. SEPTEMBER 30, 2013 UL 746E tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL provides this Standard as is without warranty of a
10、ny kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness 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 o
11、ther damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative 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 c
12、laim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is stor
13、ing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except 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
14、 text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. The following table lists the future effective dates with the corresponding item. Future Effective Date References June 30, 2014 P
15、aragraphs 7.7.1, 7.7.2, 8.7, 8.12, 10.2.1.1, 10.2.2.1, 10.2.2.6, 10.2.3.9, 10.2.4.5, and 22.1.6; Tables 7.2, 7.3, 7.4, 7.6, 8.2, 9.2, and 10.2 Effective date to be determined Paragraphs 4.2 and 17.7.2.1 SEPTEMBER 30, 2013 UL 746E tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
16、DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 5, 2010 (Title Page Reprinted: September 30, 2013) 1 UL 746E Standard for Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used In Printed-Wiring Boards First Edition November, 1985 Second Edition February,
17、 1994 Third Edition June, 2000 Fourth Edition April, 2006 Fifth Edition April 5, 2010 This ANSI/UL Standard for Safety consists of the Fifth Edition including revisions through September 30, 2013. The most recent designation of ANSI/UL 746E as an American National Standard (ANSI) occurred on Septemb
18、er 30, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Any other portions of this ANSI/UL standard that were not processed in accordance with ANSI/UL requirements are noted at the beginning of the impacted sections. Co
19、mments or proposals 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 ele
20、ctronic copy of a Standard 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 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 746E-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED
21、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 30, 2013 UL 746E 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6A 2 Glossary 6A 3 Units of Measurement 13 4
22、 Measurement Accuracy and Testing Conditions .13 5 Supplementary Test Procedures .13 6 References 14 INDUSTRIAL LAMINATES 7 General .15 8 Abbreviated Test Program .24B 9 Full Test Program 29 10 Ultrathin Laminate and Prepreg Test Program 35 10.1 General .35 10.2 UL/ANSI ultrathin laminates and prepr
23、eg 37 10.3 Non-UL/ANSI ultrathin laminate and prepreg test program .42 10.4 Intermixing of materials that are not generically identical .42A 11 Dielectric Materials Intended For Use In Fabricating High Density Interconnect (HDI) Type Constructions 43 11.1 General .43 11.2 Thermal aging .44 11.3 Perf
24、ormance prole indexing 51 11.4 Metal clad test program .55 11.5 Test programs for revising dielectric material parameters 58 VULCANIZED FIBRE 12 General 60 13 Vulcanized Fibre Test Program .61 FILAMENT WOUND TUBING 14 General .62 15 Filament Wound Tubing Test Program 63 METAL CLAD LAMINATES, METAL C
25、LAD FLEXIBLE FILM, AND PREFABRICATED MULTILAYERED LAMINATES 16 General 65 17 Metal Clad Laminates .65 17.1 General .65 17.2 Single layer sample construction .67 17.3 Multi-layer sample construction 68 17.4 Data collection .81 17.5 Microsection analysis .83 17.6 Thermal shock .85 17.7 Bond strength d
26、elamination and blistering test .86 17.8 Delamination and blistering 87 SEPTEMBER 30, 2013 UL 746E 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 17.9 Dissimilar dielectric materials thermal cycling test 87 17.10 Flammability test 88 17.11
27、 Additional tests .89 18 Prefabricated Multilayered Laminates Mass Lamination 89 18.1 General .89 18.2 Product limitations 90 18.3 Test samples 90 18.4 Processes .90 19 Metal Clad Flexible Film 91 20 Metal-Based Laminates 91 20.1 General .91 20.2 Performance prole characteristics .91 20.3 Thermal ag
28、ing .95 PERMANENT COATINGS 21 Permanent Coatings .96B 21.1 General 96B 21.2 Test samples 97 21.3 Thermal shock .99 21.4 Flammability test .99 22 Conformal Coatings .99 22.1 General .99 22.2 Test samples .100 22.3 Sample conditioning .103 22.4 Voltage transient test 106 22.5 Dielectric voltage-withst
29、and and breakdown-voltage test .108 22.6 Abrasion resistance test .109 MARKING 23 Details .110 SUPPLEMENT SA - FOLLOW-UP INSPECTION SA.1 Scope .SA1 SA2 Glossary SA1 SA3 Responsibility of the Manufacturer .SA2 SA4 Responsibility of the Field Representative SA3 SA5 Selection of Samples for Follow-Up T
30、esting .SA3 SA6 Follow-Up Test Program SA4 SEPTEMBER 30, 2013 UL 746E 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX A Infrared (IR) Analysis Conformance Criteria for Follow-Up Testing and Revision to Materials A1 Background & Pur
31、pose: .A1 A2 Sample Preparation: A1 A3 Spectral Discrepancies: .A1 A4 Exception Consideration: A2 A5 Denitions: A2 APPENDIX B TGA Conformance Criteria for Follow-Up Testing and Revision to Materials B1 Background & Purpose: .B1 B2 Number of Degradations: B1 B3 Weight Loss Percent: .B1 B4 Onset/Offse
32、t Temperature: B2 B5 Residual Weight: .B2 B6 Curve Shape: B2 B7 Exception Consideration: B3 B8 Denitions: B3 APPENDIX C DSC Conformance Criteria for Follow-up Testing and Revision to Materials C1 Background & Purpose: .C1 C2 Number and type of thermal events: C1 C3 Tolerances: C2 C4 Second Heat: C2
33、C5 Exception Consideration: C2 C6 Denitions: C2 APPENDIX D Typical IR Spectrums D1 General .D1 APRIL 5, 2010 UL 746E 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX E End-of-life Conditioning of Industrial Laminates E1 General .E1
34、APRIL 5, 2010 UL 746E 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover test procedures to be used for the evaluation of industrial laminates, lament wound tubing, vulcanized bre, and material
35、s for use in fabricating printed wiring boards. 1.2 These requirements provide data with respect to the physical, electrical, ammability, thermal, and other properties of the materials, that are intended to provide guidance to the material manufacturer, the fabricator, the end product manufacturer,
36、safety engineers and other interested parties. 2 Glossary 2.1 For the purpose of this standard the following denitions apply. 2.2 ADHESIVE A gelatinous substance such as glue or cement used to join, bond, or fasten materials or objects together. 2.3 ANISOTROPIC A material having different values for
37、 properties, such as conductivity, depending on the direction or dimension within the material. 2.4 AS RECEIVED Specimens or samples in an unconditioned state, prior to being subject to conditioning, or without a history of conditioning. 2.5 BASE MATERIAL An organic or inorganic insulating material
38、used to support a pattern of conductor material. The base material may be rigid or exible. 2.6 BASE MATERIAL THICKNESS The thickness of the base dielectric material excluding conductive foil or material deposited on the surface of the base material. If an adhesive is used to adhere the conductor mat
39、erial to the base material, the adhesive thickness and application surfaces (base material sides) are indicated separately. 2.6.1 BIAS CUT Samples cut crosswise to the surface of the material. See Figure 7.3. 2.6.1 added September 30, 2013 2.7 BONDING LAYER An adhesive layer used to bond discrete la
40、yers of multilayer laminate constructions. Also known as prepreg. 2.8 BUILD-UP THICKNESS Overall thickness of a combination of materials. Unless otherwise indicated, the build-up thickness will refer to the overall thickness of a laminate construction where no internal or external conductor material
41、 resides. 2.9 CAP LAYER A single sided copper clad laminate bonded to the external surface of the multilayer board with bonding layer material (prepreg or b-stage material). 2.10 CIRCUIT Electrical devices and elements interconnected to perform a desired electrical function. 2.11 CIRCUITRY LAYER Con
42、ductor layer or plane in or on a printed wiring board. 2.12 CLAD MATERIAL See Metal Clad Base Material. SEPTEMBER 30, 2013 UL 746E 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.13 COATING A non-metallic substance applied by some proces
43、s, such as dipping, curtain coating, lm laminating, screening, spraying, or melt-ow. 2.14 CONDITIONING Exposure of test samples to an environment for a period of time, prior to or after testing and prior to evaluation. 2.15 CONDUCTIVE (ELECTRICAL) The ability of a substance or material to conduct el
44、ectricity. 2.16 CONDUCTIVE FOIL A thin metal sheet intended for forming a conductor pattern on a base material. 2.17 CONDUCTOR A trace or path for electricity to transmit in a conductor pattern. 2.18 CONDUCTOR ADHESIVE Adhesive material used to attach conductor material to a base material. 2.19 COND
45、UCTOR AVERAGE TRACE WIDTH The average width of a length of conductor trace. 2.20 CONDUCTOR BASE WIDTH The width of a conductor at the interface of the conductor material as determined by microsection analysis. This width is used to determine bond strength/peel strength values. 2.21 CONDUCTOR LAYER A
46、 single plane of a conductor material or pattern on a base material. 2.22 CONDUCTOR MATERIAL An organic or inorganic substance capable of transmitting electricity, used for circuit conductors, including but not limited to copper, tin, nickel, gold, carbon paste, copper paste, silver paste, ruthenium
47、 oxide paste, etc. 2.23 CONDUCTOR PATTERN The path, design, or conguration of conductor material on the base material, including but not limited to conductor traces, lands, through-holes, and vias. 2.24 CONDUCTOR THICKNESS The thickness of the conductor and additional metallic platings or coatings,
48、excluding non-conductive coatings. 2.25 CONDUCTOR TRACE A linear conductor path of a conductor circuit. 2.26 CONDUCTOR WEIGHT See Conductor Thickness. 2.27 CONDUCTOR WIDTH The width of the conductor as viewed from a top view or at the plane of the surface of a base material, whichever is less. See C
49、onductor Base Width. 2.28 CONFORMAL COATING A protective covering applied on a printed-wiring board capable of conforming to the conguration of objects coated, used to increase the dielectric voltage-withstand capability between conductors and/or to protect against environmental conditions. 2.29 CONTINUITY An uninterrupted path for the ow of electrical current in a circuit. 2.30 CONSTRUCTION A variation in laminate materials, including b
