1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. JUNE 2017 Page 1 of 3 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS-DT-8 Former Designation: TMS-1011 (example) TITLE: Glass Orientation and Content of Reinforced Plastics CURRENT REV No.: 1706 DATE: June 2017 WRITTEN/EDITED BY: L. Xu APPROVED BY: R. Goluch SUPERSEDES: Rev. 12/2004 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REV
3、ISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regul
4、atory limits prior to use. 1.0 SCOPE This is a thermal (ASH) method for determining the glass content of glass reinforced plastic components. 2.0 APPARATUS 2.1 Three Ceramic Crucibles 2.2 Furnace (capable of 538C/1000F minimum) 2.3 Oven (capable of 110C/230F) 2.4 Bunsen Burner 2.5 Matches or Flint I
5、gniter 2.6 Glass Rod 2.7 Three 250 ml Glass Beakers 2.8 Rubber Policeman 2.9 Distilled Water 3.0 MATERIAL 3.1 Hydrochloric Acid (10%) 3.2 Nitric Acid (10%) 3.3 Liquid Paper 4.0 PROCEDURE 4.1 Wash and dry the crucibles and glass beakers. 4.2 Label each crucible with liquid paper. Place labeled crucib
6、les in the oven to remove moisture from the crucibles and ink. 4.3 Remove crucibles from the oven and let cool to ambient in a desiccator. 4.4 Tare the balance. Place one crucible on the balance and record weight. Place one sample in crucible on balance and record weight of the crucible plus the sam
7、ple. 4.5 Repeat step 4.4 with the remaining two samples. 4.6 Support the three crucibles in a fume hood so that a Bunsen burner can be passed under each crucible. Turn on the fume hood and ignite the Bunsen burner. Set the burner under each crucible until the samples are charred and will no longer s
8、upport a flame. 4.7 Remove the flame and let the samples cool to ambient. NUMBER: MPAPS-DT-8 TITLE: Glass Orientation and Content of Reinforced Plastics REVISION: 1706 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Sta
9、ndards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. JUNE 2017 Page 2 of 3 4.8 Place the three crucibles in a furnace at 538C/1000F minimum for 4 to 8 hours or until the charred samples and crucibles have changed colors from carbon black to a white or gray ash. 4.9 R
10、emove the crucibles from the furnace and cool to ambient. 4.10. After cooling, move the samples to the fume hood and slowly add HCl (10%) onto the sample to visual observe the fiberglass orientation. The sample should be kept intact when pouring the acid and take photos to record the fiberglass orie
11、ntation. 4.11 Add more HCl (10%) to the crucibles until the samples are immersed in the acid solution. (At this time, foaming will occur if the samples contain carbonate fillers). After foaming stops, decant the acid solution into a 250ml glass beaker (labeled identical to the crucible being decante
12、d). Add more acid solution to each sample to confirm that the carbonate fillers have been dissolved. 4.12 Decant and rinse the samples with distilled water. Decant again into the appropriate beaker. (If there are some solids remaining that are unreactive with HC1 solution, repeat step 4.10 using nit
13、ric acid). 4.13 Decant into the appropriate beaker and rinse with distilled water. (Any remaining solids or dirt must be considered unreactive filler and must be removed by mechanical agitation followed by decanting.) 4.14 Using a glass rod, mechanically agitate the glass and dirt so that a suspensi
14、on is created. Quickly decant into the appropriate beaker. Repeat this procedure with each sample until the glass fiber is sufficiently clean. 4.15 Slowly rinse and decant each beaker into the sink until the beaker is empty or some clean glass is apparent at the bottom of the beaker. If there is gla
15、ss, collect the glass with an appropriate tool such as a rubber policeman” and add this glass to the originating crucible. 4.16 Place the three crucibles in an oven at 110C/230F for one hour. Remove the samples from the oven and fluff with a glass rod. Again place the crucibles into the oven at 110C
16、/230F for another hour. 4.17 Remove the samples and let them cool to ambient in a desiccator. 4.18 Weigh and record the weight of the samples in their respective crucibles. 4.19 Calculate the percentage glass content using the formula below: Final sample weight - crucible weight X 100% Original samp
17、le weight crucible weight 5.0 REPORT Report the glass content by percentage. 6.0 TECHNICAL INFORMATION For further information, related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Tec
18、hnology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Markit Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ NUMBER: MPAPS-DT-8 TITLE: Glass Orientation and Content of Reinforced Plastics REVISI
19、ON: 1706 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. JUNE 2017 Page 3 of 3 REVISION HISTORY Revision Level Change Approved by Date Approved 1706 Converted to MPAPS; Added instructions for documenting fiberglass orientation. R. Goluch 6/21/2017
