1、T 1013 om-10 OFFICIAL TEST METHOD 1992 WITHDRAWN 2000 REVISED AND REINSTATED 2006 REAFFIRMED 2010 2010 TAPPI The information and data contained in this document were prepared by a technical committee of the Association. The committee and the Association assume no liability or responsibility in conne
2、ction with the use of such information or data, including but not limited to any liability under patent, copyright, or trade secret laws. The user is responsible for determining that this document is the most recent edition published. Approved by the Standard Specific Interest Group for this Test Me
3、thod TAPPI CAUTION: This Test Method may include safety precautions which are believed to be appropriate at the time of publication of the method. The intent of these is to alert the user of the method to safety issues related to such use. The user is responsible for determining that the safety prec
4、autions are complete and are appropriate to their use of the method, and for ensuring that suitable safety practices have not changed since publication of the method. This method may require the use, disposal, or both, of chemicals which may present serious health hazards to humans. Procedures for t
5、he handling of such substances are set forth on Material Safety Data Sheets which must be developed by all manufacturers and importers of potentially hazardous chemicals and maintained by all distributors of potentially hazardous chemicals. Prior to the use of this method, the user must determine wh
6、ether any of the chemicals to be used or disposed of are potentially hazardous and, if so, must follow strictly the procedures specified by both the manufacturer, as well as local, state, and federal authorities for safe use and disposal of these chemicals. Loss on ignition of fiber glass mats 1. Sc
7、ope This method covers the determination of the percent loss on ignition of fiber glass mats. This ignition loss can be considered to be the binder content. 2. Applicable documents 2.1 TAPPI T 658 “Properties of Diatomaceous Silica” (Section 5) (withdrawn 1998). 2.2 TAPPI T 1007 “Sample Location.” 3
8、. Summary of method Fiber glass mat is ignited in a muffle furnace at 1157 45F (625 25C) until only an ash and the glass fiber remain. The residue is weighed and the percent loss on ignition of the moisture-free mat is calculated. (Appropriate ventilation should be used when conducting this test to
9、avoid exposure to potentially hazardous products of combustion.) 4. Significance The loss on ignition of fiber glass mat may consist of: binders used to hold the glass fibers together, fibers with an ignition temperature lower than 1157F (625C), and materials used to coat the glass fibers. 5. Appara
10、tus 5.1 Balance, accurate to 0.001 g. 5.2 Drying oven, equipped with a means of constant temperature regulation and mechanical air convection. 5.3 Electric muffle furnace, capable of maintaining a temperature of 1157 45F (625 25C). 5.4 Crucible, high form, 250 mL. 5.5 Desiccator. T 1013 om-10 Loss o
11、n ignition of fiber glass mats / 2 6. Test specimen 6.1 Obtain samples in accordance with TAPPI T 1007 “Sample Location.” 6.2 Use a 5- to 10-g specimen cut into pieces small enough to fit into crucible. 6.3 Place sample in crucible. NOTE 1: With appropriate care, a specimen of mat can be subjected t
12、o this test without use of a crucible; see Note 2 after Section 8.8. 7. Procedure 7.1 Precondition each test specimen by drying for 1 h at 105 3C (220 5F), unless otherwise specified. Remove the test specimens from the drying oven and cool in the desiccator for 30 min in the standard atmosphere for
13、testing glass textiles. 7.2 Place the empty containers in the muffle furnace at 625 25C (1157 45F). After 30 min, remove and cool in the standard atmosphere (TAPPI T 1008) for 30 minutes. 7.3 Identify each container with respect to each test specimen. 7.4 Weigh the empty container to the nearest 0.0
14、01 g. Record this as the tare mass, T. 7.5 Place the test specimen in the container and weigh to the nearest 0.001 g. Record this as the initial mass, A. 7.6 Place the test specimen and container in the muffle furnace and ignite at 625 25C (1157 45F). 7.7 After ignition for at least 30 min, remove t
15、he test specimen and container from the muffle furnace and cool in the desiccator for 30 min in the standard atmosphere (TAPPI T 1008). 7.8 Remove each container and test specimen separately from the desiccator, and immediately weigh to the nearest 0.001 g. Record this as the ignited mass, B. NOTE 2
16、: When it is known that no ash residue separates from the specimen during the weighing and igniting process, the specimen may be weighed separately without the container. When this occurs, T equals zero. With appropriate care, a single piece of mat can be dried, weighed intact, and placed with tongs
17、 into the ignition oven on appropriate refractory supports. When the ignition time is complete, the sample may be removed as an intact fragile web and weighed directly on a pan balance. 8. Calculation 8.1 Calculate the percentage of ignition loss of the glass textile for each specimen as follows: Ig
18、nition loss, % = 100 (A B)/(A T) where: A = initial mass of container and specimen before ignition, g B = mass of container and glass residue after ignition, g T = mass of container (Note 2). 9. Report Report the percent loss on ignition of the glass mat to the nearest 0.1%. 10. Precision 10.1 On th
19、e basis of studies made in accordance with TAPPI T 1200 “Interlaboratory Evaluation of Test Methods to Determine TAPPI Repeatability and Reproducibility.” test results, each representing an average of 5 determinations from the same sample (commercial 2.00 lb/100ft2 fiberglass mat), are expected to a
20、gree within the amounts stated below. The study included five laboratories. 10.2 Average loss on ignition 25.1 % Repeatability 3.2 % - 0.8 weight loss % Reproducibility 6% - 1.5 weight loss % 3 / Loss on ignition of fiber glass mats T 1013 om-10 11. Keywords Fiber glass mats, Loss on ignition 12. Additional information Effective date of issue: October 6, 2010. Your comments and suggestions on this procedure are earnestly requested and should be sent to the TAPPI Standards Department. g
