1、t I MIL-I-22444C (SHIPS) SUPERSEDING 9 December 1968 MIL-I-22444B(SHIPS) 25 September 1967 (See 6.4 and 6.5) MILITARY SPECIFICATION INSULATION TAPE, ELECTRICAL, SELF BONDING, SILICONE RUBBER TREATED BIAS WEAVE OR SINUSOIDAL WEAVE GLASS, CABLE SPLICING, NAVAL SHIPBOARD 1. SCOPE 1.1 This-specification
2、 covers silicone rubber treated bias weave or sinusoidal weave glass, self-bonding electrical insulation tape intended for splicing power and control cables in shipboard electrical installations. 2. APPLICABLE DOCUMENTS c 2.1 The following documents of the issue in effect on date of invitation for b
3、ids or request for proposal, form a part of the specification to the extent specified here- in. SPECIFICATIONS MILITARY MIL-E-17555 - Electronic and Electrical Equipment, Accessories and Repair MIL-1-19166 - Insulation Tape, Electrical, High-Temperature, Glass Fiber, Parts; Packaging and Packing of.
4、 Pressure-Sensitive. STANDARD MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) (Copias of specifications, standards, drawing
5、s, and publications required by suppliers 3. REQUIREMENTS c 3.1 Sample for first article ins ction. Prior to beginning production, a sample, manufactured by production -nd pEcesses, shall be tested as specified in 4.2 (see 6.3) . requirements as specified herein. Insulation tape shall consist of bia
6、s sinusoidal woven glass cloth backing, the weave of which has been filled and coated uniformly on both sides, without pinholes or blemishes, with silicone rubber compound with self-bonding characteristics. As an alternate construction, the silicone rubber compound may be applied to the glass backin
7、g tape by an extrusion process and sealing the tape edge by extending the rubber shall be used between adjacent layers on the roll of tape to prevent bonding on the roll. compound approximately 1/32 inch beyond each edge of the glass tape. A separator tape 3.3 Rolls. Unless otherwise specified in th
8、e contract or order, the material shall 3.2 Material. Material shall be as specified herein or shall meet the performance be supplied in rolls on a 1-inch diameter core and snall be furnished in lengths of 20 yards per roll. tape thickness shall not increase more than 0.002 inch in the splice area.
9、The tensile strength of an unspliced length of tape. strength of the finished tape splice shall be not less than 80 percent of the ultimate 3.3.1 Splices. Splices in the cloth tape shall be smooth in appearance and the finished c 3.4 Thickness and width. Tape shall be furnished in the following thic
10、knesses and widths, as specifiedTe6.2). FSC 5970 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-E2444C 57 W 7977906 0414787 4 W Thickness 0.015 to 0.020 (Inch) (+ 0.002) O. 050 Width 0.50 (Inches) (+ 1/32 inch) 0.75 1.00 1.50 3.5 Tests on insu
11、lation tape. shall exhibit an average dielectric strength, after teing conitioned for 96 hours at 23OC. 3.5.1 Dielectric strength. The insulating tape, when tested as specified in 4.5.1.2, and 96 percent relative humidity, of 500 volts per mil. as specifiedin.3, shall exhibititensile strength of not
12、 less than 40 pounds per inch of width and an ultimate elongation of not less than 15 percent. 3.5.2 Tensile strength and elonqation. Specimens of he insulating tapes, when tested bonding strength of not less than 1 pound per inch of width. 3.5.3 Adhesion. Insulating tape, when tested as specified i
13、n 4.5.4, shall show a to one year shall meet LIe requirements of this specification. 3.5.4 Storage. The tape after storage under nominal conditions for periods of up 3.5.5 Identification of product. Tape shall be iaentified by marking of the interior packages in accordance with 5.1.2. 3.6 Workmanshi
14、p. The workmanship shall be in accordance with high grade manufactur- ing practice for this type of product. The glass fiber backing shall not ravel and there shall Le no adhesive transfer when the tape is unwound from tile original roll. 4, QUALITY ASSURANCE PROVISIOiJS # purchase order, the suppli
15、er is responsible for the performance of all inspection require- 4.1 Responsibility for inspection. Unless otherwise specified in the contract or ments as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the p
16、erformance of the in- spection requirements specified herein, unless disapproved by the Government. The Govern- ment reserves the right to perform any of the inspcctions set fortir in the specification where such inspections are deemed necessary to assure supplies ancl services conform to prescribed
17、 requirements. il 4.2 First article ins ection. First article inspection shall consist of the examina- tion and txspecified in4.4 and 4.5. 4.3 Samplinq for guality conformance. 4.3.1 Ins ection lot. All rolls of tape of the same width and thickness manufactured under essentialTy the same conditions
18、within a period of 15 days and offered for delivery at: the same time shall be considered a lot for purposes of inspection and tests. each lot of mi mered for examination of visual an dimensional characteristics 4.3.2 Sam lin for examination. A random sm21e of rolls shall be selected from in accorda
19、nce with MIL-STD-105 at inspection level I and Acceptable Quality Level equal to 2.5 percent defective. selected in accordanceith table I an shallbosubjected to the tests specifiefi in 4.5. 4.3.3 Samplinp for quality conformance tests, A rancion sample of rolls shall be If any sample fails one or mo
20、re of the tests, this shall be cause for rejection of the lot represented by the sample. 1 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22444C (SHIPS) Table I - Sampling for tests _- .c . .- Number of rolls Number of rolls in lot 300 and u
21、nder 301 to 500 501 to 800 1,300 and over 801 to 1,300 4.4 Quality conformance inspection. Quality conformance inspection shall include the examination and tests specified in 4.4.1 and 4.5 unless otherwise specified (see 6.2). 4.4.1 Visual and dimensional examination. The sample rolls selected in ac
22、cordance with 4.3.3 shallbeexamined to verify compliance with the requirements of this specification which do not involve tests. Approximately 7 yards of tape shall be unwound from each sample roll. Any roll in the sample containing one or more visual or dimensional defects shall not be offered for
23、delivery. If the number of defective rol.ls in any sample exceeds the acceptance number for that sample, this shall be cause for rejection of the 1ot.represent- ed by the sample. 4.5 Test procedures. 4.5.1 The thickness and width of tape shall be measured on a length of tape care- fully removed from
24、 the roll along with the separator tape to prevent stretching the tape. The width shall then be measured before removing the separator tape. The thickness shall be measured, including the tape, taking care not to compress the silicone rubber. The thickness of the silicone rubber tape shall be obtain
25、ed by subtracting the thickness of the separator tape from the combined measurement. for physical requiremenf-1-19166 shall be conducted on specimens of the insulating 4.5.2 Dielectric stren th. A dielectric strength test as specified in the table tape. # 4.5.3 Tensile strength and elon ation. Tensi
26、le strength and elongation of tape shall be determined in a suitable tensile t%ting machine. The machine shall have a maximum per scale division. The rate of jaw separation shall be 12 .t 1 inches per minute. Ten- tension-indicating capacity of 15 pounds, and graduations shall read 0.25 pound or les
27、s sile strength of tape shall be determined on specimens whichaave been conditioned in the standard laboratory atmosphere for at least 40 hours. Elongation of tape shall be deter- mined on specimens which have been conditioned in the standard laboratory atmosphere for at least 40 hours. The tape spe
28、cimen shall be 5-1/2 inches long with bench marks 2 inches apart. 4.5.4 Adhesion. Any suitable mechanical device consisting of a 1-inch diameter man- drel rnountedmntially frictionless bearings with a means of clamping one end of the end of the tape may be used. A general description of the apparatu
29、s is given in MIL-I- tape to the mandrel with a weight of 10 pounds per inch of tape width attached to the other 19166, Faur layers of tape shall be wound on the mandrel and the specimen shall be main- tained for 24 hours at 23OC. and 50 percent relative humidity with the tension applied. The weight
30、 shall then be removed and the bonded tape shall be pulled off the rotating mandrel at 90 degrees with a rate of 12 inches per minute. The bonding strength of the second and third layers shall be recorded and averaged. 5. PREPARATION FOR DELIVERY # (The preparation for delivery requirements specifie
31、d herein apply only for direct Government procurements.) 5.1 Preservation &packaging, packins, &marking. marked in accordance with MIL-E-17555. The tape shall be wound in rolls containing the 5.1.1 The electrical insulating tape shall be preserved and packaged, packed, and length specified in 3.3. 3
32、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-E2444C 59 W 9979906 0434769 6 W . . . 5.1.2 Additional markinq. Each roll shall be durably and legibly matked with the following, in such a manner that the markings will not become damaged when t
33、he packages are opened: (a) Date of manufacturer.l-/ (b) Each packaged roll and shipping container shall be marked with the following CAUTION: proximity to steam pipes, radiators or other sources of heat.“. “Store in original boxes and in a cool, dark location. DO not-store in close 1/Date of manufa
34、cture is defined as the date on which the actual manufacturing process was completed. 6. NOTES # 6.1 Intended use. The tape is suitable for use as an insulation and binder in making splices in shipboardower and control cables MIL-C-915 and MIL-C-2194. . 6.2 Ordering data. Procurement documents shoul
35、d specify the following: (a) Title, number, and date of this specification. (b) Thickness and width required (see 3.4). (c) When a manufacturers insulation tape of the same manufacture, material, thickness, and width has passed all tests on a previous submission, only the examination of 4.4.1 and 4.
36、5.1.1 and the tests of 4.5.1.2 and 4.5.1.3 - will be required (see 4.4). #. 6.3 First article ins ection. Invitation for bids should provide that the Government reserves t-gmaivethe requirement for samples for first article irspection as to those bidders offering a product which has been previously
37、procured or tested by the Government, and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approvalis presently appropriate for the psnding procurement. 6.4- International interest. Certain provisions of this s
38、pecification are the sub- ject of international standardization agreement ABC-NAVY-STD-17. When amendment, revision, or cancellation of this specification is proposed which will effect or violate the inter- national agreement concerned, the preparing activity will take appropriate reconciliation off
39、ices, if required. action through international standardization channels including departmental standardization # 6.5 CHANGES FROM PREVIOUS ISSUE. THE OUTSIDE MARGINS OF THIS DOCUMENT HAVE BEN MARKED INDI DI WHERE CHANGES (DELETIONS, ADDITIONS, ETC.) FROM THE PREVIOUS ISSUE LIABILITY WHATSOEVER FOR
40、kW INACCURACIES IN THESE NOTATIONS. BIDDERS AND CONTRACTORS HAVE BEEN MADE. THIS HAS BEEN DONE AS A CONVENIENCE ONLY AND THE GOVERNMENT ASSUMES NO AS WRITTEN IRRESPECTIVE OF THE MARGINAL NOTATIONS MD RELATIONSHIP TO THE LAST PREVIOUS ARE CAUTIONED TO EVALUATE THE REQUIREMENTS OF THIS DOCUMENT BASED ON THE ENTIRE CONTENT ISSUE. Preparing activity: Navy - SH (Proect 5970-NZ87) 4 , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
