SE439629B - ROCKET ENGINE WITH HOLIDAY ASSOCIATED SOLID POWER PROCEDURE AND PROCEDURE FOR THE PREPARATION OF A ROCKET ENGINE WITH ASSOCIATED SOLID PROGRAM MENT - Google Patents

ROCKET ENGINE WITH HOLIDAY ASSOCIATED SOLID POWER PROCEDURE AND PROCEDURE FOR THE PREPARATION OF A ROCKET ENGINE WITH ASSOCIATED SOLID PROGRAM MENT

Info

Publication number
SE439629B
SE439629B SE7714556A SE7714556A SE439629B SE 439629 B SE439629 B SE 439629B SE 7714556 A SE7714556 A SE 7714556A SE 7714556 A SE7714556 A SE 7714556A SE 439629 B SE439629 B SE 439629B
Authority
SE
Sweden
Prior art keywords
diisocyanate
aziridine
rocket engine
bis
methyl
Prior art date
Application number
SE7714556A
Other languages
Swedish (sv)
Other versions
SE7714556L (en
Inventor
J D Byrd
J O Hightower
Original Assignee
Thiokol Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thiokol Corp filed Critical Thiokol Corp
Publication of SE7714556L publication Critical patent/SE7714556L/en
Publication of SE439629B publication Critical patent/SE439629B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
    • C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
    • C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/69—Polymers of conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • C08L19/006—Rubber characterised by functional groups, e.g. telechelic diene polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • F02K9/346—Liners, e.g. inhibitors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Molecular Biology (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

7714556-3 Föreliggande uppfinning avser en raketmotor med till höljet för- bundet fast framdrivningsmedel, kännetecknad av att den innefattar 1) ett hydroxiavslutat polybutadienbaserat polyuretanbundet fram- drivningsmedel och 2) ett till höljet förbundet foder bestående av en polybutadienbaserad polyuretan och en aziridin utvald ur den grupp som består av trimesoyl-1-(2-etyl)aziridin, bis-isoftaloyl- -1-(2-metyl)aziridin, bis-isosenakoyl-1-(2-etyl)aziridin, bis-iso- ïsebakoyl-1-aziridin, tri-[ï-(2-metyl)-aziridinyl7-fosfinoxid, bis- [Ü-(metyl)-aziridinyl]-etylsulfon, tris-2,4,6-(1-aziridinyl)-1,3,5- -triazin och blandningar därav. The present invention relates to a rocket engine with a solid propellant attached to the casing, characterized in that it comprises 1) a hydroxy-terminated polybutadiene-based polyurethane-bound propellant and 2) a casing-connected liner consisting of a polybutadiene-based polyurethane and an aziride-derived aziride. group consisting of trimesoyl-1- (2-ethyl) aziridine, bis-isophthaloyl-1- (2-methyl) aziridine, bis-isosenacoyl-1- (2-ethyl) aziridine, bis-iso-isebakoyl-1- aziridine, tri- [η- (2-methyl) -aziridinyl7-phosphine oxide, bis- [β- (methyl) -aziridinyl] -ethylsulfone, tris-2,4,6- (1-aziridinyl) -1,3,5 - -triazine and mixtures thereof.

US-patent 3 974 131 (1976-08-10) avser användning av olika akrylera- de aziridinylmonomerer och -polymerer och deras användning som vid- häftningsbefrämjande medel i vinylföreningar. De föreningar som kom- mer att användas i denna uppfinning är avsedda att användas för att öka polyuretanets vidhäftningsförmåga.U.S. Patent 3,974,131 (1976-08-10) relates to the use of various acrylated aziridinyl monomers and polymers and their use as adhesion promoters in vinyl compounds. The compounds that will be used in this invention are intended to be used to increase the adhesion of the polyurethane.

De påtagliga utföringsformerna av denna kompositionsaspekt av upp- finningen äger i sig själv den egenskaper vid användning att vara härdbara med diisocyanathärdare och därvid ge fastsubstanser, som är lämpliga att använda som höljefoder i sådana raketmotorer som har ett fast bränsle förbundet till höljet.The apparent embodiments of this compositional aspect of the invention in themselves possess the properties in use of being curable with diisocyanate hardeners and thereby providing solids which are suitable for use as casing liners in such rocket engines which have a solid fuel connected to the casing.

Uppfinningen tillhandahåller även ett förfarande för framställning av raketmotorer, där ett med hydroxiavslutad polybutadienbaserad po- lyuretan bundet fast kornformigt framdrivningsmedel förbindes med ett raketmotorhölje, kännetecknat av a) att ett raketmotorhölje, till vilket nämnda kornformiga fram- drivningsmedel önskas bli förbundet, förses med ett härdat foder in- nehållande en aziridin och en hydroxiavslutad polybutadien härdad med en polyisocyanathärdare, b) att nämnda på hydroxiavslutad polybutadien baserade kornformiga framdrivningsmedel i ohärdat tillstånd gjutes i den önskade konfi- gurationen i nämnda fodrade raketmotor och c) att nämnda kornformiga framdrivningsmedel härdas.The invention also provides a process for the production of rocket motors, in which a hydroxy-terminated polybutadiene-based polyurethane bonded solid granular propellant is connected to a rocket motor casing, characterized in a) that a rocket motor casing, to which said granular propellant is desired to be co-propelled, feed containing an aziridine and a hydroxy-terminated polybutadiene cured with a polyisocyanate hardener, b) said hydroxy-terminated polybutadiene-based granular propellant in the uncured state is cast in the desired configuration in said lined rocket engine and c) said granular propellant.

Uppfinningen och dess utövande skall nu närmare belysas med hänvis- ning till en specifik utföringsform, nämligen ett foder till raket- motorhölje som innehåller det hydroxiavslutade polybutadienbaserade 7714556-5 polyuretanbindemedel, som har varubenämningen R~45 M och aziridinet trimesoyl-1-(2-etyl)-aziridin. Den hydroxiavslutade polybutadien- polymeren R-45 M saluföres av Arco Chemical Company och dess struk- tur kan åskâdliggöras som CHFCH / HO CH2 \c1{2-)-5-2-+ GiZ-CIH-P-k Giz-Cfecfl-CH-cmz 0 6 OH ' cn=cxa I ' 55 2 Nämnda R-45 M blandas med nämnda trimesoyl-1-(2-etyl)-aziridin, en k0nventionell diisocyanathärdare, lämpligen DDI, ett flytande C36- alifatiskt diisocyanat salufört av General Mills och, om så önskas, ett eller flera fyllmedel, exempelvis kolsvart. Denna tillblandade komposition vakuumavgasas och hälles som foder ned i ett tidigare på glödspân avlägsnat och avfettat raketmotorhölje av stål och härdas vid en förhöjd temperatur på ca 60-9500. Sedan härdningen eller den partiella härdningen fullbordats, kan ett på hydroxiavslutad polybu- tadien baserat kornformigt framdrivningsmedel, exempelvis ett fram- drivningsmedel bestående av R-45 M som bindemedel i en viktmängd av ca 8,5-24%, och innehållande sådana vanliga blandningsbeståndsdelar som dioktyladipat såsom mjukqörare, ett polyisocyanatbindemedel som isoforondiisocyanat eller ovannämnda DDI upp till ca 2 vikt-%, ett oxidationsmedel, som ammoniumperklorat, upp till 75-90 vikt-%, om så önskas någon andel metalliskt bränsle som aluminiummetall samt andra konventionella förbränningsstatilisatorer, flamkylmedel och liknande, hällas i och härdas på plats i den fodrade motorn på vanligt sätt.The invention and its practice will now be further elucidated with reference to a specific embodiment, namely a rocket engine casing liner containing the hydroxy-terminated polybutadiene-based polyurethane binder, which has the trade name R ~ 45 M and the aziridine trimesoyl-1- (2- ethyl) -aziridine. The hydroxy-terminated polybutadiene polymer R-45 M is marketed by Arco Chemical Company and its structure can be illustrated as CHFCH / HO CH2 \ c1 {2 -) - 5-2- + GiZ-CIH-Pk Giz-Cfec fl-CH-cm2 Said R-45 M is mixed with said trimesoyl-1- (2-ethyl) -aziridine, a conventional diisocyanate hardener, preferably DDI, a liquid C36 aliphatic diisocyanate marketed by General Mills and, if desired, one or more fillers, for example carbon black. This blended composition is vacuum degassed and poured as feed into a previously fired and degreased steel rocket engine casing and is cured at an elevated temperature of about 60-9500. After the curing or partial curing is completed, a hydroxy-terminated polybutadiene based granular propellant, for example a propellant consisting of R-45 M as binder in an amount of by weight of about 8.5-24%, and containing such common mixing constituents as dioctyl adipate as plasticizer, a polyisocyanate binder such as isophorone diisocyanate or the above-mentioned DDI up to about 2% by weight, an oxidizing agent, such as ammonium perchlorate, up to 75-90% by weight, if desired some proportion of metallic fuel such as aluminum metal and other conventional combustion stabilizers, similar, is poured in and cured in place in the lined motor in the usual manner.

Förutom det här speciellt belysta bindemedlet R-45 M torde det vara uppenbart för fackmannen att varje flytande hydroxiavslutad polybu- tadienpolymer som är känd för att kunna användas vid bindning av korn- formiga framdrivningsmedel kommer att vara tillämpliga vid uppfinnin- gen. Belysande exempel på sådana polymerer är de som saluförs under varubenämningarna R-4533, R-15 M, CS-15 av Arco Chemical Company och Butarez HTS av Phillips Petroleum Company. Det kommer på liknan- de sätt att uppenbaras för fackmannen att förutom här exemplifici- erad DDI, kan varje polyisocyanat användas för att åstadkomma härd- ning av bindemedlet. Belysande exempel på andra lämpliga polyiso- cyanater är isoforondiisocyanat, hexametylendiisocyanat, PAPI poly- mera diisocyanater saluförda av Uphohn Company och Desmodure N-100 7714556-3 ett polyisocyanat salufört av I.G. Farben och även sådana isocyana- ter som 1~metoxifenyl-2,4-diisocyanat, 1-metyl-4-metoxifenyl-2,S- -diisocyanat, 1-etoxifenyl-2,4-diisocyanat, 1,3-dimetoxifenyl-4,6- -diisocyanat, 1,4-dimetoxifenyl-2,5-diisocyanat, 1-propoxifenyl-2,4- -diisocyanat, 1-isobutoxi~2,4-diisocyanat, 1,4-dietoxifeny1-2,5-di- isocyanat, toluen-2,4-diisocyanat, toluen-2,6-diisocyanat, difenyl-> eter-2,4-diisocyanat, naftalen-1,4-diisocyanat, 1,1'-dinaftalen- -2,2'-diisocyanat, difenyl-2,4-diisocyanat, 3,3'-dimetylbifenyl-4,4'- -diisocynat, 3,3'-dimetoxibifenyl-4,4'-diisocyanat, difenylmetan- -4,4'-díisocyanat, difenylmetan-2,4'-diisocyanat, difenylmetan-2,2'- -diisocyanat, 3,3'-dimetoxidifenylmetan-4,4'-diisocyanat, bensofe- non-3,3'-diisocyanat, etylendiisocyanat, propylendiisocyanat, butyl- endiisocyanat, pentylendiisocyanat, metylbutylendiisocyanat, tetra- metylendiisocyanat, pentametylendiisocyanat, dipropyldiisocyanat- eter, heptametylendiisocyanat, 2,2-dimetylpentylendiisocyanat, 3- -metoxi-hexametylendiisocyanat, oktametylendiisocyanat, 2,2,4-tri- metylpentylendiisocyanat, 3-butoxihexametylendiisocyanat, 1,3-di- metylbensendiisocyanat, 1,4-dimetylbensendiisocyanat, 1,2-dimetyl- cyklohexandiisocyanat, 1,4-dimetylcyklohexandiisocyanat, 1,4-dime- tylbensendiisocyanat, 1,4-dimetylnaftalendiisocyanat, 1,5-dimetyl- naftalendiisocyanat, cyklohexan-1,3-diisocyanat, cyklohexan-1,4-di- isocyanat, 1-metylcyklohexan-2,4-diisocyanat, 1-metylcyklohexan-2,2- -diisocyanat, 1-etylcyklohexan-2,4-diisocyanat, dicyklohexylmetan- ~4,4'-diisocyanat, dicyklohexylmetylmetan-4,4-diisocyanat, dicyklo- hexyldimetylmetan-4,4'-diisocyanat, 2,2-dimetyldicyklohexelmetan- -4,4'-diisocyanat, 3,3',5,5'-tetrametyldicyklohexylmetan-4,4'~diiso- cyanat, 4,4'-metylenbis(cyklohexylisocyanat), etylidendiisocyanat, 4}4'-difenyldiisocyanat, dianisidindiisocyanat, 1,5-naftalendiiso- cyanat, m-fenylendiisocyanat, isopropy1idenbis(fenyl- eller cyklo- hexylisocyanat), 1,3-cyklopentylendiisocyanat, 1,2-cyklohexylendi- isocyanat, 1,4-cyklohexylendiisocyanat, 4,4',4"-trifeny1metantri- isocyanat, 1,3,5-triisocyanatbensen, fenyletylendiisocyanat och liknande.In addition to the particularly illustrated R-45 M binder, it will be apparent to those skilled in the art that any liquid hydroxy-terminated polybutadiene polymer known to be used in bonding granular propellants will be applicable to the invention. Illustrative examples of such polymers are those marketed under the tradenames R-4533, R-15 M, CS-15 by Arco Chemical Company and Butarez HTS by Phillips Petroleum Company. It will similarly be apparent to those skilled in the art that in addition to the DDI exemplified herein, any polyisocyanate may be used to effect curing of the adhesive. Illustrative examples of other suitable polyisocyanates are isophorone diisocyanate, hexamethylene diisocyanate, PAPI polymeric diisocyanates marketed by Uphohn Company and Desmodure N-100 7714556-3 a polyisocyanate marketed by I.G. Dyes and also such isocyanates as 1-methoxyphenyl-2,4-diisocyanate, 1-methyl-4-methoxyphenyl-2, S-diisocyanate, 1-ethoxyphenyl-2,4-diisocyanate, 1,3-dimethoxyphenyl-4 , 6-diisocyanate, 1,4-dimethoxyphenyl-2,5-diisocyanate, 1-propoxyphenyl-2,4-diisocyanate, 1-isobutoxy-2,4-diisocyanate, 1,4-diethoxyphenyl-2,5-di isocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, diphenyl-> ether-2,4-diisocyanate, naphthalene-1,4-diisocyanate, 1,1'-dinaphthalene-2,2 ' diisocyanate, diphenyl 2,4-diisocyanate, 3,3'-dimethylbiphenyl-4,4'-diisocynate, 3,3'-dimethoxybiphenyl 4,4'-diisocyanate, diphenylmethane-4,4'-diisocyanate, diphenylmethane-2,4'-diisocyanate, diphenylmethane-2,2'-diisocyanate, 3,3'-dimethoxydiphenylmethane-4,4'-diisocyanate, benzophenone-3,3'-diisocyanate, ethylene diisocyanate, propylene diisocyanate, butyl end diisocyanate, pentylene diisocyanate, methyl butylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, dipropyl diisocyanate ether, heptamethylene diisocyanate, 2,2-dimethylpentylene diisocyanate, 3-methoxy-hexamethylene di socyanate, octamethylene diisocyanate, 2,2,4-trimethylpentylene diisocyanate, 3-butoxyhexamethylene diisocyanate, 1,3-dimethylbenzene diisocyanate, 1,4-dimethylbenzene diisocyanate, 1,2-dimethylcyclohexane diisocyanate, 1,4-dimethylisocyanate dimethylbenzene diisocyanate, 1,4-dimethylnaphthalene diisocyanate, 1,5-dimethylnaphthalene diisocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,4-diisocyanate, 1-methylcyclohexane-2,4-diisocyanate, 1-methylcyclo 2,2-Diisocyanate, 1-ethylcyclohexane-2,4-diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, dicyclohexylmethylmethane-4,4-diisocyanate, dicyclohexyldimethylmethane-4,4'-diisocyanate, 2,2-diisocyanate dimethyl dicyclohexelemethane-4,4'-diisocyanate, 3,3 ', 5,5'-tetramethyldicyclohexylmethane-4,4' diisocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), ethylidene diisocyanate, 4} 4'-diphenyl diisocyanate, dianisidine diisocyanate, 1,5-naphthalene diisocyanate, m-phenylene diisocyanate, isopropylidenebis (phenyl or cyclohexyl isocyanate), 1,3-cyclopentylene diisocyanate, 1,2-cyclohexylene diisocyanate, 1, 4-cyclohexylene diisocyanate, 4,4 ', 4 "-triphenylmethane triisocyanate, 1,3,5-triisocyanate benzene, phenylethylene diisocyanate and the like.

Det kommer även att vara uppenbart för fackmannen att förutom här beskrivet trimesoyl-1-(2-etyl)aziridin kommer andra aziridiner att utgöra fullständiga ekvivalenter för denna uppfinnings syften. Be- lysande exempel på dessa är tris-2,4,6-(1-aziridinyl)~L3,5-triazin, bis-isoftaloyl-1-(2-etyl)-aziridin, bis-isosebakoyl-1-azirkfinq tris- 7714556-3 -[1-(2-metyl)-aziridin]-fosfinoxid, bis-[1-(2-metyl)-aziridinyl7- etylsulfon, polyfunktionella aziridiner saluförda under varubenäm- ningen PFAZ 300, PFAZ 301 av Ionac Chemical Company, och liknande.It will also be apparent to those skilled in the art that in addition to the trimesoyl-1- (2-ethyl) aziridine described herein, other aziridines will constitute complete equivalents for the purposes of this invention. Illustrative examples of these are tris-2,4,6- (1-aziridinyl) -L3,5-triazine, bis-isophthaloyl-1- (2-ethyl) -aziridine, bis-isosebacoyl-1-azirac- 7714556-3 - [1- (2-methyl) -aziridine] -phosphine oxide, bis- [1- (2-methyl) -aziridinyl] -ethyl sulfone, polyfunctional aziridines marketed under the tradename PFAZ 300, PFAZ 301 by Ionac Chemical Company, and similar.

Det kommer också att vara uppenbart att förutom här nämnt kolsvart, som valfritt användes som fyllmedel, kan andra material vara lämp- liga att använda som fyllmedel och även valfritt användas ensamma eller i kombination med varandra eller med kolsvart. Exempel på så- dana är titandioxid, kiseldioxid, kvarts, aluminiumoxid, krossat glas och aluminiumsilikatleror.It will also be apparent that in addition to the carbon black mentioned here, which is optionally used as a filler, other materials may be suitable for use as a filler and may also optionally be used alone or in combination with each other or with carbon black. Examples of such are titanium dioxide, silica, quartz, alumina, broken glass and aluminosilicate clays.

Aziridinerna enligt uppfinningen kan inblandas i en mängd av ca 1 - 10% av totalvikten för foderblandningen. Företrädesvis kan de in- blandas till ca 4-8% lämpligen ca 6% av den totala vikten. Följande exempel belyser ytterligare detbästa sättet för utövande av denna uppfinning.The aziridines of the invention may be incorporated in an amount of about 1-10% of the total weight of the feed mixture. Preferably they can be mixed in to about 4-8%, preferably about 6% of the total weight. The following examples further illustrate the best mode for practicing this invention.

Exempel Följande exempel visar beredningen av en typisk foderkomposition med användning av de adhesionsbefrämjande medlen enligt uppfinningen.Examples The following examples show the preparation of a typical feed composition using the adhesion promoters of the invention.

Till 41,85 viktprocent R-45 M sättes 12,15 viktprocent DDI, 6,0 vikt- procent trimesoyl-1-(2-etyl)aziridin och 40 viktprocent kolsvart, varvid aziridinet smältes före tillsättandet och hela blandningen omblandas under ca 45 minuter och avgasas sedan med konventionell teknik, såsom vakuumblandning eller spaltavluftning. Blandningen uppgjutes sedan enligt standardförfaranden och härdas vid 77°C un- der 96-168 timmar. Den normala tjockleken som erhålls vid ett på- läggningstillfälle till ett motorhölje är 0,08-0,10 cm.To 41.85% by weight of R-45 M is added 12.15% by weight of DDI, 6.0% by weight of trimesoyl-1- (2-ethyl) aziridine and 40% by weight of carbon black, the aziridine being melted before addition and the whole mixture being mixed for about 45 minutes and then degassed by conventional techniques, such as vacuum mixing or gap venting. The mixture is then poured according to standard procedures and cured at 77 ° C for 96-168 hours. The normal thickness obtained at the time of application to a motor housing is 0.08-0.10 cm.

Karakteristiska fysikaliska egenskaper erhållna för härdade prov av blandningen är följande: Typiska vidhäftningsegenskaper Prov av den ovannämnda blandningen härdades på stâlytor, stålsand- blästrades och ångavfettades eller härdades och typiska framdriv- nings- och isoleringsmaterialblandningar härdades på foderytan.Characteristic physical properties obtained for cured samples of the mixture are as follows: Typical adhesion properties Samples of the above mixture were cured on steel surfaces, steel sandblasted and steam degreased or cured, and typical propulsion and insulation material mixtures were cured on the lining surface.

Dragadhesionen och avrivningshållfastherna bestämdes sedan med de resultat som nedan visas, vilka kan jämföras med den avrivnings- 7714556-5 fasthet på 1-1,6 kp/cm, som erhålles med tunn beläggning av fram- drivningsmedel för bindning vid rumstemperatur (25°C) mellan lik- nande framdrivningsmedel- och foderblandningar utan aziridin, i de fall fodret inte helt härdats före härdningen av framdrivningsme- del och 0,5-1,0 kp/cm då fodret är helt härdat före framdrivnings- medeltillsats.The tensile adhesion and tear strengths were then determined with the results shown below, which can be compared with the tear resistance of 1-1.6 kp / cm obtained with a thin coating of propellant for bonding at room temperature (25 ° C). ) between similar propellant and feed mixtures without aziridine, in cases where the feed has not been completely cured before the curing of the propellant and 0.5-1.0 kp / cm when the feed is fully cured before the addition of propellant.

Claims (3)

7714556-3 Patentkrav7714556-3 Patent claims 1. Raketmotor med till höljet förbundet fast framdrivnings- medel, k ä n n e t e c k n a d av att den innefattar 1)ett hydroxiavslutët polybutadienbaserat polyuretanbundet framdrivningsmedel och 2) ett till höljet förbundet foder bestående av en polybuta- dienbaserad polyuretan och en aziridin utvald ur den grupp som består av trimesoyl-1-(2~etyl)aziridin, bis-isoftaloyl- -1-(2-metyl)aziridin, bis-isosebakoyl-1-(2-etyl)aziridin, bis-isøsebakoyl-1-aziriain, tr1-¿"1-(2-mety1)-az1ridiny1_7- fosfinoxid, bis-lï-(2-metyl)-azirídinyl_7etylsulfon, tris-2,4,6-(1-aziridinyl)-1,3,5-triazin och blandningar därav.Rocket engine with fixed propellant attached to the casing, characterized in that it comprises 1) a hydroxy-terminated polybutadiene-based polyurethane-bound propellant and 2) a casing-connected liner consisting of a polybutadiene-based polyurethane and an aziridine selected from the group consisting of of trimesoyl-1- (2-ethyl) aziridine, bis-isophthaloyl-1- (2-methyl) aziridine, bis-isosebacoyl-1- (2-ethyl) aziridine, bis-isosebakoyl-1-aziriain, tr1-¿ 1- (2-methyl) -aziridinyl-7-phosphine oxide, bis-1- (2-methyl) -aziridinyl-7-ethylsulfone, tris-2,4,6- (1-aziridinyl) -1,3,5-triazine and mixtures thereof. 2. Raketmotor enligt krav 1, k ä n n e t e c k n a d av att aziridinen ingår i fodret i en mängd av 1 - 10 viktprocent.Rocket engine according to claim 1, characterized in that the aziridine is included in the feed in an amount of 1 - 10% by weight. 3. Förfarande vid framställning av en raketmotor med till höljet förbundet fast framdrivningsmedel, k ä n n e t e c k - n a t av att a) ett raketmotorhölje förses med en härdad ínfodring bestä- ende av en aziridin, vald ur den grupp som består av trimesoyl- -1-(2-etyl)aziridin, bis-isoftaloyl-1-(2-metyl)aziridin, bis- -isosebakoyl-1-(2-etyl)aziridin, bis-isosebakoyl-1-aziridin, tri-¿'-1-(2-metyl)azirid1ny1_7fosfin0x1a, bis-¿'1-(2-mety1)- aziridinyl_7etylsulfon, tris-2,4,6-(1-aziridinyl)-1,3,5-triazin eller blandningar därav och en hydroxiavslutad polybutadien härdad med en polyisocyanathärdare, b) att det hydroxiavslutade polybutadienbaserade framdrivnings- medlet gjutes in i höljet i ohärdad form och c) att nämnda framdrivningsmedel härdas.3. A method of manufacturing a rocket engine with a fixed propellant attached to the housing, characterized in that a) a rocket engine housing is provided with a hardened liner consisting of an aziridine selected from the group consisting of trimesoyl-1- (2-ethyl) aziridine, bis-isophthaloyl-1- (2-methyl) aziridine, bis-isosebacoyl-1- (2-ethyl) aziridine, bis-isosebacoyl-1-aziridine, tri-α'-1- ( 2-methyl) aziridinyl_7phosphine oxyla, bis-[1- (2-methyl) aziridinyl] ethyl sulfone, tris-2,4,6- (1-aziridinyl) -1,3,5-triazine or mixtures thereof and a hydroxy-terminated polybutadiene cured with a polyisocyanate hardener, b) the hydroxy-terminated polybutadiene-based propellant is cast into the casing in uncured form and c) the said propellant is cured.
SE7714556A 1977-01-06 1977-12-21 ROCKET ENGINE WITH HOLIDAY ASSOCIATED SOLID POWER PROCEDURE AND PROCEDURE FOR THE PREPARATION OF A ROCKET ENGINE WITH ASSOCIATED SOLID PROGRAM MENT SE439629B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75726077A 1977-01-06 1977-01-06

Publications (2)

Publication Number Publication Date
SE7714556L SE7714556L (en) 1978-07-07
SE439629B true SE439629B (en) 1985-06-24

Family

ID=25047092

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714556A SE439629B (en) 1977-01-06 1977-12-21 ROCKET ENGINE WITH HOLIDAY ASSOCIATED SOLID POWER PROCEDURE AND PROCEDURE FOR THE PREPARATION OF A ROCKET ENGINE WITH ASSOCIATED SOLID PROGRAM MENT

Country Status (7)

Country Link
JP (1) JPS5388846A (en)
CA (1) CA1149174A (en)
DE (1) DE2758814A1 (en)
FR (1) FR2376833A1 (en)
GB (1) GB1585713A (en)
IL (1) IL53672A (en)
SE (1) SE439629B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105932C2 (en) * 1981-02-18 1982-12-02 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Insulating layer for propellants
DE3644239A1 (en) * 1986-12-23 1988-07-07 Bayern Chemie Gmbh Flugchemie INTERMEDIATE LAYER BETWEEN THE DRIVELINE AND THE INSULATION LAYER OF A ROCKET SOLID DRIVE KIT
GB2466512B (en) * 2008-12-23 2010-12-08 Adbruf Ltd A polymer and method of forming a polymer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1056984A (en) * 1976-01-16 1979-06-19 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Curable binding systems

Also Published As

Publication number Publication date
CA1149174A (en) 1983-07-05
DE2758814A1 (en) 1978-07-13
IL53672A (en) 1982-03-31
FR2376833A1 (en) 1978-08-04
SE7714556L (en) 1978-07-07
GB1585713A (en) 1981-03-11
JPS6230296B2 (en) 1987-07-01
IL53672A0 (en) 1978-03-10
FR2376833B3 (en) 1980-09-26
JPS5388846A (en) 1978-08-04

Similar Documents

Publication Publication Date Title
US4429634A (en) Adhesive liner for case bonded solid propellant
US5316600A (en) Energetic binder explosive
US4337218A (en) Method of case bonding propellant
US4657607A (en) Process for the solvent-free manufacture of compound pyrotechnic products containing a thermosetting binder and products thus obtained
US4726919A (en) Method of preparing a non-feathering nitramine propellant
US4163681A (en) Desensitized explosives and castable thermally stable high energy explosive compositions therefrom
US4956397A (en) Insulating liner for solid rocket motor containing vulcanizable elastomer and a bond promoter which is a novolac epoxy or a resole treated cellulose
US3507114A (en) Solid propellant liner
US4042441A (en) Mechanical-chemical linkage between polymer layers
US3813308A (en) Case bonding system for cast composite propellants
US5762746A (en) Method of internally insulating a propellant combustion chamber
SE439629B (en) ROCKET ENGINE WITH HOLIDAY ASSOCIATED SOLID POWER PROCEDURE AND PROCEDURE FOR THE PREPARATION OF A ROCKET ENGINE WITH ASSOCIATED SOLID PROGRAM MENT
US4209351A (en) Ambient cured smokeless liner/inhibitor for propellants
US5031539A (en) Radiation curable rocket motor liner for case bonded solid propellant
US3954701A (en) Polymer composition containing inorganic filler
US5872328A (en) Ferrocene derivatives
US3801385A (en) Processing aids for hydroxy-terminated polybutadiene propellant(u)
US3947523A (en) Composition comprising epoxy resin, copolymer of butadiene and acrylic acid, curing agent and inorganic metal salt
US4736684A (en) Delayed quick cure rocket motor liner
US3745074A (en) Composite solid propellant with additive to improve the mechanical properties thereof
US4116131A (en) Solid propellant motor
US5085725A (en) Method of chemical bonding of solid propellant grains to the internal insulation of an interceptor motor
US3762972A (en) Reaction product of phosphine oxide with carboxylic acids
US4482408A (en) Plasticizer system for propellant compositions
US4375522A (en) Thixotropic restrictor, curable at room temperature, for use on solid propellant grains