ASTM D ). 2. SIGNIFICANCE. This method accelerates natural aging of . ASTM D SUMMARY OF CHANGES. No changes from the 14th edition. Designation: D – 06 Standard Practice for Accelerated Aging of Pressure- Sensitive Tapes1 This standard is issued under the?xed. A summary of ASTM standards relating to pressure sensitive tape is attached. D (), includes the year of the last revision () and the year of.
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For instance, when repeating this conditioning one might not set the temperature exactly the same or the atmospheric pressure might vary or the purity of the salt might zstm from different vendors.
An illustration of this can be made with the peel adhesion test.
Include no more sample rolls than will displace one fourth of the air volume in the vessel. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
This may asmt 24 or 48 h for some materials. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This solution within the closed vessel both provides and controls the moisture content humidity within the vessel.
The extent of change for one physical property should be expected to be different than for another property and so would also relate to different natural aging time.
This means that a measurement of precision for a physical property test on tape always has as one of its components the inherent variability between tape specimens. Use a volume the units will be cubic centimetres of water not less than that obtained by multiplying times times the vessel air volume in f3611 metres.
Appearance of normal tape product will usually change only slightly on two years natural aging.
ASTM D3611 – 06(2011)
The environment in the vessel is dependent on careful observation of the requirements of loading in relationship to vessel volume and liquid surface area in accordance with Section 7. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
This accelerated exposure usually produces an exaggerated change in appearance which would be astj under natural conditions only in abnormal product. Use separators that allow free air asfm around and between the rolls and which are non-hygroscopic.
ASTM D 压敏胶带的加速老化试验_百度文库
Historical Version s – view previous versions of standard. These small differences result aztm slightly different aging of the tape from time to time.
Since it is seen as a change in the apparent variability of the physical property test results, we can relate it to the expected precision of the atsm by making the following statement: Immediately remove the sample rolls from the assembly. There is no present experience to relate this accelerated exposure to responses of tape in applications where the tape is under a use stress.
It is applicable to tape in roll form when the user observes the precautions detailed within the procedure. NOTE 1—The d361 for this practice cannot occur unless the vessel used as the environment container is vented so that pressure differences between the sstm and the outside of the vessel can be balanced. This accelerated exposure usually produces an exaggerated change in appearance which would be seen under natural conditions only in abnormal product. D Terminology of Packaging and Distribution Environments.
Reagents for Humidity Vessel in Oven procedure 7. Current edition approved Oct.
We do d3161 expect this superimposed added variability effect to be great. It is not intended for use on electrical grade tapes see Test Methods D Natural aging in this context means a continuous period of aging of tape in a closed fibreboard container in darkness in the variable climate of either the warm moist south, the warm dry southwest or the moderate midcontinent, USA.
This reduces salt deposition and crystalline build-up. Originally approved in A number in parentheses indicates the year of last reapproval.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. It is superimposed on the variability inherent in performance of the subsequent physical property test for which this conditioning was preparatory.
An abnormal product lot may cause differences in testing response that throw off the expected time patterns. The practice does not provide for a conclusion within itself, but is for use in conjunction with appearance or physical property tests to follow the accelerated exposure.
Last previous edition approved in as D — 89 It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Aging reduces this inherent variability between specimens for some types of tape and some tests.
Unless otherwise indicated, it is intended that all reagents shall conform to the speci?
A different type of tape could yield data comparable to more or less than that time period.