1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 01 29 Balloted for Globalization L. Hess, FNA 2007 10 15 Revised Added WSS-M12P2-B2; Inserted 3.0. 3.15 Deleted 3.1, 3.2, 3.3.2, 3.3.3, 3.3.4, 3.8.2, 3.10, 3.11, 3.13, 3.14 Revised 1, 2, 3, 3.2, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.12, 5.1 & 5
2、.2 M. Mehandru 1992 01 31 Released NB00I10043054151 TRB, R. D. Moore, LWM Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 4 PERFORMANCE, CERAMIC CONDUCTORS, FUSED, WSB-M12P2-B ELECTRICALLY HEATED BACKLITE, GLASS PERFORMANCE, NON CERAMIC CONDUCTORS, WSS-M12P2-B
3、2 ELECTRICALLY HEATED BACKLITE, POLYCARBONATE 1. SCOPE These specifications define the performance requirements for a heated backlite comprised of conductive materials either fired and fused to float glass, or thermally cured materials which are printed or applied onto polycarbonate glazing systems.
4、 2. APPLICATION These specifications were released originally to supplement information on the engineering drawing for an electrically heated backlite assembly for defroster and/or defogger purposes. In addition to the requirements listed in this specification, requirements listed in the SDS must be
5、 met, unless otherwise agreed to by Ford engineering 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). Unless otherwise indicated on the engineering dr
6、awing, the following requirements are applicable to full size backlite or suitable size test specimens, prepared concurrently with the backlites. The size of the test specimens used, shall be governed by the test conditions. All test plaques must go through process conditions identical to that of fi
7、nal production parts, including bake cycles for defroster electrical connector. 3.3 SUBSTRATE (Unless otherwise specified on engineering drawing). Glass, safety, heat treated float, solar tint. Polycarbonate, Optical Grade - Coated ENGINEERING MATERIAL SPECIFICATION WSB-M12P2-B/B2 Printed copies are
8、 uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.4 STANDARDS When silver filled ceramic conductors are fused to glass backlites, or non ceramic conductors printed or applied to polycarbonate backlites, the assembly must meet all requirements of the following latest test stan
9、dards in the European market. ECE R-43 BS AU 178 StVZO 22a The above standards are equivalent to each other. The glass or polycarbonate system must meet the requirements of the latest following standards for the North American Market. ANSI Z 26.1 ANSI Z 26.1a FMVSS 205 3.5 CONDUCTOR COLOR Yellow-amb
10、er, dark red, silver or as specified on engineering drawing. 3.6 APPEARANCE Conductors shall be fused, printed, or applied in a continuous coating without craters, pinholes, seediness or abnormal roughness. There shall be no skips or breaks in the conductors detectable by visual or electrical means
11、which would affect the normal functioning of a heated glass or polycarbonate backlite. 3.7 THERMAL SHOCK ADHESION There shall be no loss of adhesion or continuity between the conductors and the backlite, when an assembly is subjected to 4 cycles. These requirements supplement information appearing o
12、n engineering drawings and engineering specifications for Electrically Heated Backlites containing fused silver filled ceramic or non-ceramic conductors. Test Method: The backlite shall be placed in a cold box at -40 +/- 2 C for a period of 2 h. On removal from the cold box, the backlite shall be pl
13、aced immediately in an oven at 82 +/- 2 C for a period of 2 h. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1, material shall show no color change in excess of specified Grey Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing
14、or surface oxidation. Coating shall not exhibit any loss of adhesion (as evidence by an abrasion test conducted under conditions described in para 3.12). ENGINEERING MATERIAL SPECIFICATION WSB-M12P2-B/B2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.8.1
15、Xenon Arc Weatherometer Rating 4 (SAE J2527 modified Type “S“ borosilicate inner and outer filters, 0.55 W/m2radiant exposure 3000 h exposure, specimen size: 100 - 150 mm in length) 3.9 DISCOLORATION (Glass Only) The silver-ceramic conductors shall exhibit a minimum degree of silver migration stain
16、into the glass, after being fired. Such discoloration shall not increase when exposed to the weathering test specified in para 3.8. 3.12 ABRASION RESISTANCE (Conductors) There shall be no greater than a + 6.5% ohm change in the resistance values of the silver filled ceramic conductors, or non-cerami
17、c. There shall be no loss of adhesion or continuity of the conductors in the abraded area. Test Method: The glazing surface and silver filled ceramic, or non-ceramic conductors shall be subjected to 1000 cycles of abrasion in a Taber abrader using resurfaced CS10F wheels under a 100 g load, as descr
18、ibed in Section 5.18 of latest released ANSI Standard Z26.1, and incorporated by reference in FMVSS 205, latest released version. The resistance to abrasion of the silver filled ceramic/ non ceramic conductors shall be determined by measuring the resistance change of the conductors before and after
19、the abrasion cycles. 3.15 DEFROSTER CONNECTOR, Adhesion Durability, min 100 N (FLTM BU 155-01) Defroster electrical connectors regardless of type must pass this test as received and after environmental cycle listed below. Two sets of plaques are to be tested in triplicate one set before and one set
20、after an environmental cycle. As Received After Thermal Cycle (5 cycles) 4 hours at 90 C 4 hours at 50 C and 98% +/- 2% RH 16 hours at -40 C ENGINEERING MATERIAL SPECIFICATION WSB-M12P2-B/B2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMAT
21、ION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 CLEANING Glazing surface must be free of dirt, oil, fingerprints and any other material which would interfere with the adhesion or functioning of the silver-ceramic con
22、ductors. Highly abrasive materials and/or sharp instruments that would damage the conductors should be avoided when cleaning the interior surface of the backlite assembly. 5.2 FIRING SCHEDULE (For glass only) The firing cycle normally used to fuse the silver-ceramic conductors shall be equivalent to the production curing and temperature cycle. 5.3 CURING SCHEDULE (Polycarbonate System) The curing cycle for printed conductors shall be equivalent to the production curing and temperature cycle.
