NAVY MIL-R-21607 E-1990 RESINS POLYESTER LOW PRESSURE LAMINATING FIRE-RETARDANT《阻燃低气压胶膜聚酯纤维树脂》.pdf

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1、MIL-R-21bOE 73 7777706 0433715 8 25 May 1990 SUPERSEDING 5 August 1976 (See 6.8) MIL-R-21607D(SH) MILITARY SPECIFICATION RESINS, POLYESTER, LOW PRESSURE MINATING, FIRE -RETARDANT This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use

2、 by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 SCOD. This specification covers translucent resins used to fabricate fire-retardant glass reinforced plastic laminates for use in boats, tanks, and other Naval applications. 1.2 Classification. Resins shall be of the followi

3、ng grades, as specified herein (see 3.2 and 6.2): Grade A - Standard flame resistance. Grade B - Superior flame resistance. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 SDecifications. standards. and handbooks. The following specifica- tions, standards, and handbooks form a part of this d

4、ocument to the extent specified herein. those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Unless otherwise specified, the issues of these documents are Beneficial comments (recommendation

5、s, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form

6、1426) appearing at the end of this document OK by letter. AMSC N/A FSC 9330 1. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-ZLb07E 73 77797Ob 0433716 T SPECIFICATIONS FEDERAL QQ-R-175 -

7、 Resistance Wire, MI LI TARY MIL-R-7575 - Resin, Polyester, Low-Pressure Laminating. MIL-C-9084 - Cloth, Glass, Finished, for Resin Laminates. MIL-(3-19663 - Cloth, Woven Roving, for Plastic Laminate, STANDARD FEDERAL FED-STD-313 - Material Safety Data, Transportation Data and Disposal Data for Haza

8、rdous Materials Furnished to Government Activities. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.3 Order of Drecedence. I

9、n the event of a conflict between the text of this document and the references cited herein, the text of this document takes, precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. Re

10、sins furnished under this specification shall be products which are authorized by the qualifying activity for listing on the appli- cable qualified products list at the time of award of contract (see 4.3 and 6.4). 3.2 Material. The resin shall meet the requirements for grades A or B of MIL-R-7575 as

11、 specified (see 6.2) and the additional requirements specified herein, When used in accordance with material contractors recommendations, the resin shall be for use in contact or vacuum bag processes with cure temperatures between 55 to 81 degrees Fahrenheit (OF) (13 to 27 degrees Celsius (OC). 3.3

12、Flame resistance. Weathered (see 3.5) and unweathered resin test panels shall meet the requirements of table I (see 4.5 and 4.6). TABLE I. Flame resistance reauirements. Aver age Average ignition burning time time (seconds) (seconds) Minimum Maximum Grade A Grade B 2 Provided by IHSNot for ResaleNo

13、reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-21b07E 73 779770b 01.133738 3 4.4 Oualitv conformance insDection. Quality conformance inspection shall be in accordance with MIL-R

14、-7575 (see 6.3). 4.4.1 Sampling for aualitv conformance inspection. Sampling for quality conformance inspection shall be in accordance with MIL-R-7575. 4.4.2 Reiection criteria. Rejection criteria for quality conformance inspection shall be in accordance with MIL-R-7575. 4.5 Fabrication of laminates

15、 for tests. Glass reinforced plastic panels shall be fabricated in the form of sheets, nominally 0.5 inch (12.7 millimeters (mm) thick and 12 by 12 inches (30.5 by 30.5 centimeters (cm) in size. The cloth shall conform to type XII or XIIA, class 1 of MIL-(3-9084. Forty plies of cloth shall be impreg

16、nated with catalyzed resin and press cured to 0.5 inch (12.7 mm) stops at such temperature and pressure as will provide a fully cured laminate with a resin content of 38 to 44 percent (see 4.7) and a Barco1 hardness of 45 minimum. The resin used shall meet the requirements of 3.2, 3.3, 3.4 and 3.6.

17、4.6 Flame resistance test. 4.6.1 Test sDecimens. Five specimens, each measuring 5 by 0.5 by 0.5 inch (12.7 by 1.27 by 1.27 cm) shall be tested. 4.6.2 Test amaratus. 4.6.2.1 Enclosure. An enclosure large enough to contain the specimen, supports, heater coil, spark plugs, flame travel gauge, and their

18、 associated accessories shall be arranged to eliminate air drafts and permit a clear view of the interior through shatterproof glass windows. the sides adjacent to the base shall be provided to admit fresh air when an exhaust fan, which is connected to the top of the enclosure, is operated at a mini

19、mum suction just sufficient to carry off smoke and gases. Vent holes distributed around 4.6.2.2 Sumorts. Top and bottom supports shall hold the specimen in a vertical position. The unsupported span between the supports shall be a minimum of 4 inches (10 cm). The lower end of the specimen shall be wr

20、apped in such a manner that gases released through this end are diverted toward the spark plugs. 4.6.2.3 Heating coils. Heating coils shall consist of seven turns of no. 10 (0.102 inch (0.26 cm) diameter) resistance wire, QQ-R-175 grade E, space wound to 0.25 inch (0.64 cm) per turn. The nominal ins

21、ide diameter of the coil used shall be 1.19 inches (3.02 cm). The lower end of the heater coil shall be located 1.5 inches (3.81 cm) above the top of the lower specimen support. 4.6.2.4 SDark Dlufzs. Two spark plugs with extended electrodes spaced 0.125 inch (0.32 cm) from the surface of the specime

22、n shall be located on diametrically opposite sides of the specimen. The spark plugs shall be placed with their longitudinal center lines in a horizontal plane 0.5 inch (1.27 cm) above the top of the heater coil to ignite the gases emitted from the heated specimen. electric circuit shall be provided

23、to maintain continuous sparking at the elec- trodes during the specified time. moved away from the specimen after ignition takes place so as not to impede the travel of the flame and to prevent their electrodes from becoming fouled by soot. An The spark plugs shall be mounted so they may be 4 Provid

24、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-21b07E 93 W 9999906 0933719 5 W MIL-R-21607E(SH) 4.6.3 Test Drocedure. 4.6.3.1 Ignition time. With the specimen centered in the heater coil, and the spark plugs and flame gauge properly located, the enc

25、losure shall be closed and ventilated, of the heater coil and spark plugs. supplied from a transformer to the heater coil. Ignition shall be considered as occurring when the flame transfers from the escaping gases to the surface of the specimen and continues there, disregarding the flashes which may

26、 occur in the gassing space prior to the sustained flame. A stop watch shall be started simultaneously with the energizing A constant current of 55 amperes shall be 4.6.3.2 Time of heating. Heating shall be discontinued 30 seconds after ignition occurs. be discontinued. If ignition does not occur wi

27、thin 600 seconds, the test shall 4.6.3.3 Ignition. - Immediately after ignition occurs (see 4.6.3.11, the electrical supply to the spark plugs shall be cut off and the spark plugs shifted away from the flame. 4.6.3.4 BurninP time. The number of seconds that the specimen continues to burn, until the

28、cessation of all flaming, after the current in the heater coil has been cut off shall be recorded as the time required for self-extinction. 4.6.4 Testrecults. 4.6.4.1 Calculation of average - imition time. The average ignition time shall be calculated as the arithmetic mean of the ignition time of t

29、he five specimens, 4.6.4.2 Calculation of averape burninP time. Average burning time shall be calculated as follows. extinction in increasing order of magnitude, as TI, T, T, T, and T,. Compute the following ratios: Arrange the five values of the time required for self- T, - TI and T, - T, T5 - Tl T

30、5 - Tl If either of these ratios exceeds 0.642, then T, or T, is judged to be abnormal and is eliminated. remaining four values. burning time shall be the average of all five values (see 3.3). The average burning time reported shall be the average of the If neither of these ratios exceeds 0.642, the

31、 average 4.7 Test for resin content. 4.7.1. Test specimen. The test specimens shall have a minimum weight of 3 grams and a maximum size of 1 by 1 inch (2.54 by 2.54 cm) by the thickness as supplied (see 4,5). The sides shall be square to the faces and the edges shall not be frayed. 4.7.2 Test amarat

32、us. Test apparatus shall consist of an analytical balance, a desiccator, heat-resistant nonreactive crucibles, and a muffle furnace equipped with temperature controls. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-v MIL-R-2Lb07E 73 777770b OL.133

33、720 II MIL-R-21607E(SH) 4.7.3 Test Drocedure. 4.7.3.1 Weiehine of specimen. The specimen shall be weighed on an analy- tical balance in a previously weighed, ignited crucible, 4.7.3.2 Ifmition. The specimen shall be placed in the furnace at a temperature not greater than 650F (343C). Temperature of

34、the furnace shall be raised to 1050 & 50F (565 & 28C) at a rate that will not cause blowing or loss of inorganic filler. The specimen and crucible shall be ignited at this maximum temperature to a constant weight (2 to 6 hours depending on the thickness), and allowed to cool in a desiccator. The los

35、s in weight shall be determined by weighing the specimen and crucible as in 4.7.3.1 after cooling. 4.7.4 Calculation of resin content, Resin content shall be calculated as follows (see 3.4). Resin content, percent by weight = loss in weight x 100 original weight 4.8 One-vear outdoor weathering. Pane

36、ls of laminate (see 4.5) shall be exposed to an outdoor environment for 1 year (see 3.5) on a land rack inclined 45 degrees to the horizontal, facing south. The laminate shall be turned over every 15 days. At the end of the weathering period, specimens shall be cut from the , laminate, subjected to

37、standard conditions (air temperature 73 & 2F (23 & 1C) and.relative humidity 50 2 4 percent) for at least 96 hours prior to testing. panels shall meet the requirements specified in 3.3. The 4.9 InsDection of Dackaginq. Sample packages and packs, and the inspection of the preservation, packing and ma

38、rking for shipment and storage shall be in accordance with the requirements of section 5 and the documents specified therein. 5. PACKAGING (The packaging requirements specified herein apply only for direct Government acquisition.) 5.1 Packaeing reauirements. The resin shall be preserved level A, or

39、commercial, packed level A, B, or commercial as specified (see 6.2), and marked in accordance with MIL-R-7575 and shall include bar codes and applicable packaging acquisition options therein as specified (see 6.2). 5.2 Material safetv data sheet. A copy of the material safety data sheet shall be att

40、ached to tie shipping document for each destination (see 3.7). 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. Resins meeting the requirements of this specification are intended for use when a flame-retardan

41、t translucent laminate (as fabricated by contact or vacuum bag processes) is desired. The translucency permits visual 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-21b07E 73 = 7777706 0433721 3 examination by through lighting for detection

42、of internal defects. of the resin molecules provide flame resistance characteristics. to improve the flame resistance, are limited by the requirements of 3.6. Halogenation Resin additives, 6.2 Acauistion reauirements. Acquisition documents must specify the following: (a) Title, number, and date of t

43、his specification. (b) Issue of DoDISS to be cited in the solicitation, and if required, (c) Grade of resin required (see 1.2 and 3.2). (d) If test conditions are to be other than as specified (see 4.2.1). (e) Quantity of resin required, (f) Level of preservation, packing and marking required (see 5

44、.1). the specific issue of individual documents referenced (see 2.1.1). 6.3 Consideration of data reauirements. The following data requirements should be considered when this specification is applied on a contract. The applicable Data Item Descriptions (DIDs) should be reviewed in conjunction with t

45、he specific acquisition to ensure that only essential data are requested/provided and that the DIDs are tailored to reflect the requirements of the specific acquisition. a Contract Data Requirements List (DD Form 1423) must be prepared to obtain the data, except where DoD FAR Supplement 27.475-1 exe

46、mpts the requirement for a DD Form 1423. Reference ParaFraDh DID Number DID Title Suggested Tailoring To ensure correct contractual application of the data requirements, 4.4 DI-T-5329 Inspection and test - reports The above DIDs were those cleared as of the date of this specification. The current is

47、sue of DoD 5010.12-L, Acquisition Management Systems and Data Require- ments Control List (AMSDL), must be researched to ensure that only current, cleared DIDs are cited on the DD Form 1423, 6.4 Oualification. With respect to products requiring qualification, awards will be made only for products wh

48、ich are, at the time of award of contract, qualified for inclusion in Qualified Products List No. 21607 whether or not such products have actually been so listed by that date. contractors is called to these requirements, and manufacturers are urged to arrange to have the products that they propose t

49、o offer to the Federal Govern- ment tested for qualification in order that they may be eligible to be awarded contracts or purchase orders for the products covered by this specification, activity responsible for the Qualified Products List is the Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 and infor- mation pertaining to qualification of products may be obtained from that activity. Application for Qua