1、 03 January 1983 SUPERSEDING AMEWDIYENT 3 6 Octooer 1981 MILITARY SPEC IF1 CATION CLOTH, IGNITER Tnis Amendmeilt forms a part of Military Specification MIL-C-l3814(OK3) , dated 1 Dec 1954, and is approved for use by the US Army Arnament Research and Development Comman and is availaDle for use by al
2、l Departments and Agencies of kne Depar tsent of Defense. PAGE 1 scope, Delete in its entirety ana substitute the following: “1. Scow. This swcification covers two types of igniter cloth for use in the manufacture of igniter pads used in an.n*m i ti on . ,2 Classification. The igniter cloth shall te
3、 of the following typs anci classes: Class A - Brea.king strengtn 125 pounds Rr square incn, minimum (min). Class a - Breaking strengtn 90 pounds per square inch, min Type II Acrylic class A - Breaking strength 100 pmnds r inch, min.“ 2. Agplicahle Documents, Under Federal, delete: “TT-C-595 - Color
4、s; (for) Ready-Mixed Paints“ and sabstitute “Federal Standard - 595 - Colors“. 1 of 4 FSC 1395 fl Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-13814 (AR) AMENDLUNT 4 ?AGE 2 3.1.2 Type II, Deleie in its entirety and suostitute the f ollowingt
5、 “3.1.2 Material Type II.-Acrylic igniter cloth shall be woven fran acrylic yarns spun from acrylic fibers containing 85% ninirnum plyacrylonitrile, no nomopolyiaer snall be used.“ -. 3.4 Delete the last sentence and substitute the following: “A tolerance of plus or xinus 0.5 inch will ne permitted.
6、 PAGE 3 Table I, delete in its entirety and substitute the following: “TABLE I ACRYLIC CLMIii BREAKING THREAD WEIGHT STRENGTH COUNT (Oz. pfr sq yd) (13 per inch) (threads per imh) FILL - WARP - NARI? FILL - - MIN - MAX MIN MIN MIN-MAX MIN-MAX 5.25 5-75 100 100 34-45 35-45“ PAGE 7 * 4.16. Delete in
7、its entirety and Substitute the following: “4.16 Color (ap2licaole to Type I and Type II):. In all instances the cloth shall ba dyed scarlet. shall produce a color closely equivalent to red calor NO. 11105 Feeral Standard No. 595. ae used: Tne scarlet dye The following types of dye stuffs may 4.16.1
8、 Acid typa. One o the following, or a blend of the two: Sodium salt of ditolyl-diazo-bis % naphthylamine-4 sulfonic acid C34H26N606S2Na2 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-(2-13814 (AR) AhENDMSNT 4 Sodium salt .of 4 sulfodnagiithal
9、ene-azo-f -naphthol C 20H13AQ4 SNa 4.16.1 Dissrsed Type. A dispersed type dyestuff olend may k used consisting of: 6 metnysulfonyl-2-benzothiazoleazo-N, $ - cyanoethyl-N-#3 -acetoxyethyl aniline, or an equivalent dye blended with auxillari dyes to give tne proper color.“ 4.17, Delete in its sntirety
10、 and suostitute the following: “4.17 Acrylic fiber content 4.17.1 Dgsizing. Approximately 5g of the test fabric shall be transferred to a 600 mL beaker to which 400 mL of distilleci water dias ken added. This mixture shall be boiled and the liqaid decanted. The addition of water, boiling and decanti
11、ng shall be repeated until the liq-iid is clear. The spscimen shall be removed fron the beaker and allowed to air dry. Tk specinen shall then rn tested with iodine .(apsroximately N/lo) to assure that all starcn has been removed. Tne washing procedure shall D= repeated as often as necessary until a
12、negative test for starch is obtained on tnr cloth. .- 4.17.2 Extraction With dimethylformanide. The specimen shall be transferred to a 250 mL beaker and tne beaker and contents placed in an ov8i rnaintained at 100 to 105OC for one now. Tne beaker and contents shall be cooled in a desiccator and weig
13、iie. deigiied. The difference oetween these weights represents tne weight of the desiz2d sanple. 600 mL beaker to whicn 150 mL dimetnylformamide has been added. This bsaksr and contents snall DI placed in a steam bath and - neated for 15 ininutes. The liquid shall be decanted. The , addition of dime
14、thylformamide 8 neatinj and decanting shall De repeated 5 times. The contents of the oeaker shall be washed iJi th distilled water until the odor from the dimethylf ormamide iiai been removad. The sample shall then be transferred to a tared 251) mL beaker. The Makar and coiltents shall he placed in
15、an ovari maintained at 100 to 105% for one nour, cooled in a desiccatar and wei gned . The spcimen shall bz removed and the einpty beaker The specimen shall ix. placed in a 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-l3814(AR) AMENDMENT 4
16、 Percent acrylic fiber = (A -B) x 100 A Where: A = weignt of desiztd sample, g 3 = weignt of desizeui sample after extraction with dinethylformamida # gn The margins of this aqsndment are marked with an asterisk to indicate wnere changes fran the previous amendment were made. Tnis was one as a conve
17、nience only and the Government assumes no iaDility whatsoever for any inaccuracies in these notations. aidders anci contractors are cautioned to evaluate tne requirements of this docirinent based on the entire content irrespective of the marginal notations and relationship to the last previous amendment . - Zustodian: A rin AR 4 Preparing activity: Army-AR (Project 1395-A225) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
