Document YD77Ba4eG2w6mL4ov11Laon8N

UESB' 1. tharsaeoostie vban flrad at 2000F lose* all bonding proparti#* exccrt tfcat contributed tap the rilUr^ aotloc of the fiber*. *ondl tap felting actios alone la poor* TW" addltloo of *dioa silicate to Tberae.ceaetle roenlt* lo good bonding, *aa after b#ing srpoeed to isnperatnret up to 2CQ0l\ ta. Sodlun allleat# tends to sake tba product note brittle. v 5' Portland sweat slight Ip aids bonding of Thersccouatic to a natal mrfaes after firing. 6. 1*1 and Sprv-Kdte bulb exhibit f*ir bonding after being exposed to high vespers ture* 7 Tho offset high hoelditles hare on a s*fflpls of Tfceraacoustlc containing ollw allleata Is presently being studied. ^ ooo8r> I Pi(f r2 Bsport >595 ssasstsim ' 2% it rasa--arfsi 'that todies silicate should bo added as an additional >la4ir 'to tborasooustie whoa enotherflre tost it run. since the sole organic Wilff presently being need will ban out t the higher tesperature*. MgCOSSIQi &iari She following samples of thoraaeoustlc wore sprayed on sheet aetal plate* 4* j 4* la order to study the efaaraotorleties of the bonding agents at high tesrami* 1* thermoocustic blank. 2. tfcernacoustic containing 3/* Bentonite Clay. 3* thernacoustlo containing 3/* gray Portland Ceeeat. 4. ffeermaoouetlo containing sodium ellleate type V.* 5. Limpet. 6. Spray-tote (Sprayed Insulation Co.. Sewarfc, S. J.) * Sf eolation In tho spraying water. Vhan dry e*ch easels it placed against the south of ths laboratory Burrell Pomace and fired according to the standard tine-teoperature eurre. ?iae-TsaT?erutuyt_Currt (AST*. S-119-41) Temperature 5 min. 10 aln. 30 aln. 1 hr. 2 hrs. 4 hre. 1000 1300 1550 1700 1850 2000 After each test, the templet were checked for - 1. terfecs. 2. Bood within material 3. Bond to aetal. heeh eaerple after firing bad a crusty eorface that crushed into a powder. Tbi* cruet vms dna to elntsring and fusion at ^he higher temperatures. Below the urfeoe the smterlal retained most of its fl be roue characteristics, while at taa netal surface all~of the -characteristics were retained. 00087 Vr >. !* ty ba-ort ?595 Basftaalfta aa^)l vara tj m12/ dlalaftfft aft Hat aaftal aurffcoa, aa4 vtftkia ftte ftW, Actually lit tend vat ft** *ly Ift ftte flbar fbZU*c ceUan, tUe ftte oipalo bladar had tervad out. tt* teifb--ft Oft aaotU.ftlaplcyad * baftftar aatal bate, baft ftte latw-nw M u ftlltr Um that ttotaft abort. Arn ia a/ MdlM aHtUaaftt r*ntftad 1a a food bead for both ftte flbara afftte aaftal aarfaea. < teftb Tltert Ml 5prv*IU vara ratal fhir for bond of flbar* te to oaftal. Ite tea af ateloa alUeata otea ftte produeft aUffatly aora hrittla*; eonaaqtuatlr ftte aarfaoa la terdar aad ftte product braaka aora aaaliy. fba adraataca. hbv- rr. af aoaftaload boadin* at Meter ftaapamfturaa aaaa fto ovar rid# ftp# dlaaAvaaUcti #f laeraaaad bittliMM. A aaapla af tteraaeooaftlo easftaialac aodloa alUeata la praaantl? la .ftte boaldit/ aablaaft la ordar to at4r tha affacfta that hl*fa teMdlty tea oa fthla product. ?. H. Sftuopf f SaaaaroA Dapartatat Q, 00088 \ hd * Poport iS9S WirU1 ftMMwIU oottteiAlac lxitoniU 01^ ttardMl1n aontalrlnc 3* Oray Portland i tlinii9>i>l< ooatal&log oodiaa tillcat* Llapoft lprir4oU fis&ftl Oiaaljr 0>atgr Crontjr Crmsty Craatjr Croaty Bond VlthIn. . Poor Poor P?or Oood Fair Fair Board To Met%l Poor Poor Itir Oood m* Mtr 00089