IfC tILE COPy OFFICE OF NAVAL RESEARCH Contract: NOOO14-85-K-0222 Work Unit: 4327-555 Scientific Officer: Dr. Richard S. Miller 00 0} Technical Report No. 14 * 0) HEAT BUILD-UP AND BLOW-OUT OF RUBBER BLOCKS by A. N. Gent and M. Hindi Institute of Polymer Science The University of Akron D T IC Akron, Ohio 44325 A -ELECTE ~APR 2 t9B88 May, 1988S AP29Q8D Reproduction in whole or in part is permitted for any purpose of the Urited States Government Approved for public release; distribution unrestricted S. . . , , i 8 I I
40
Embed
IfC - Defense Technical Information Center Heat-Buildup and Blow-out of Rubber Blocks A.N.Gent and M.Hindi Institute of Polymer Science and Polymer Engineering Center The University
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
IfC tILE COPy
OFFICE OF NAVAL RESEARCH
Contract: NOOO14-85-K-0222
Work Unit: 4327-555
Scientific Officer: Dr. Richard S. Miller
000} Technical Report No. 14
* 0)HEAT BUILD-UP AND BLOW-OUT OF RUBBER BLOCKS
by
A. N. Gent and M. Hindi
Institute of Polymer ScienceThe University of Akron D T ICAkron, Ohio 44325 A -ELECTE
~APR 2 t9B88
May, 1988S AP29Q8D
Reproduction in whole or in part is permitted for
any purpose of the Urited States Government
Approved for public release; distribution unrestricted
S. . ., , i 8 I I
SKCURITY CLASSIFICATION OF THIS PAGE (Whim' D614 X014moE) ____ ___ _ INSTRUCTIONS___ ___
Table 2: Blow-Out Temperatures Tb and Times tin Flexometer
and Microwave Experimenits.
Flexometer Microwave
Material Tb (OC) Tb (*C) t(s) Tb (0C) t(s)
Sample base Sample center Sample center
NR2. 164 181 510 176 i14 53
SBR3 145 ± 7 215 420 227 t9 47
IIRl 144 182 ± 2 1260 182 ±4 27
IIR2 146 184 ± 5 1200 185 ±5 26
20
Table 2: Blow-Out Temperatures Tb and Times t in Flexometer
and Microwave Experiments.
Flexometer Microwave
Material Tb ( 0C) Tb ("C) t(s) Tb ( 0 C) t(s)
Sample base Sample center Sample center
NRI 164 181 510 176 ± 14 53
SBR3 145 ± 7 215 420 227 ± 9 47
IIR1 144 182 1 2 1260 182 ± 4 27
IIR2 146 184 ± 5 1200 185 ± 5 26
1: flVV_,7RVAVkIW" A A
21
Table 3: Effect of Young's Modulus E on Microwave Blow-Out
Temperatures Tb for Various Rubber Compounds.
Material E (MPa) E (MPa) Tb (OC) Blow-Out Time t(s)
at 250 C at 1900C
NRI 4.5 2.2 176 ± 14 53
NR2 6.1 4.5 215 ± 7 45
NR3 3.2 2.9 213 ± 5 58
NR4 4.5 4.3 222 ± 7 93
SBRI 4.5 3.4 196 ± 8 180
SBR2 3.6 --- 173 ± 10 43
SBR3 8.1 4.5 227 ± 9 47
SBR4 4.5 5.1 252 ± 5 75
"BRi 1.3 --- 200 ± 3 56
BR2 2.0 --- 192 76
IIRl 7.7 1.2 182 ± 4 27
1IR2 6.8 0.8 185 ± 5 26
.... .....
22
Table 4: Effect of Sample Thickness on Microwave Blow-Out
Temperature (Compound SBR3).
Sample
Thickness (mm) Blow-Out Temperature ('C)
(Cylinder, diameter 17.5 mm, 227 ± 9
height 25 mm)
12.7 232 ± 7
7 230 ± 8
4 232 ± 6*
2 228 ± 10*
Note: Results marked with an asterisk denote temperatures of
pronounced swelling of the sample (see Figure 3).
Explosive blow-out did not take place in these cases.
23
Figure Legends
Figure 1. Blow-out samples of NRI. (a) Flexometer. (b) Microwave.
Figure 2. Blow-out samples of SBR3. (a) Flexometer. (b) Microwave.
Figure 3. Cross-section of NRI samples cut open shortly before
blow-out. (a) Flexometer. (b) Microwave.
Figure 4. Cross-section of SBR3 samples cut open shortly before
blow-out. (a) Flexometer. (b) Microwave.
Figure 5. Cross-section of a butyl rubber sample (IiRi), cut
open after blow-out in a microwave oven.
Figure 6. (a) Cross-section of an SBR1 sample, cut open shortly
before blow-out in a microwave oven.
(b) View of a similar sample after blow-out.
Figure 7. Cross-sections of BRi samples, cut open after various
periods of heating in a microwave oven. (a) 2 min,
(b) 6 min, (c) 10 min.
Figure 8. Cross-sections of thin samples of SBR3, cut open after
heating in a microwave oven for 40 s. Sheet thickness:
(a) 4 mm, (b) 2 mm.
MIN
24
4M
25
16~
26
Jillr
'few'
00=
-------- ..... ....... ...... ....
27
L�.
II .
0�'"-4rz.�
�
--
28
. 0I
29
-r4
...... .. ..1
30
I.'w
b
3'4
A
aJ
A
Ser 432/84/211DYN
Revised January 1985
32
(DYN)DISTRIBUTION LIST
Dr. R.S. Miller Dr. L.V. SchmtdtOffice of Naval Research Office of Naval TechnologyCode 432P Code 07CTArlington, VA 22217 Arlington, VA 22217(10 copies)
Dr. J. Pastine JHU Applied Physics LaboratoryNaval Sea Systems Command ATTN: CPIA (Mr. T.W. Christian)Code 06R Johns Hopkins Rd.Washington, DC 20362 Laurel, MD 20707
Dr. Kenneth D. HartmanHercules Aerospace Division Dr. R, McGuireHercules Incorporated Lawrence Livermore LaboratoryAlleghany Ballistic Lab University of CaliforniaP.O. Box 210 Code L-324Cumberland, MD 20502 Livermore, CA 94550
Mr. Otto K. Heiney P.A. MillerAFATL-DLJG 736 Leavenworth Street, #6Elgin AFB, FL 3254.2 San Francisco, CA 94109
Dr. Merrill K. King Dr. W. MonizAtlantic Research Coip. Naval Research.Lab.5390 Cherokee Avenue Code 6120Alexandria, VA 22312 Washington, DC 20375
Dr. R.L. Lou Dr. K.F. MuellerAerojet Strategic Propulsion Co. Naval Surface Weapons CenterBldg. 05025 - Dept 5400 - MS 167 Code R11P.O. Box 15699C White OakSacramenta, CA 95813 Silver Spring, MD 20910
Dr. R. Olsen Prof. M. NicolAerojet Strategic Propulsion Co. Dept. of Chemistry & BiochemistryBldg. 05025 - Dept 5400 - MS 167 University of CaliforniaP.O. Box 15699C Los Angeles, CA 90024Sacramento, CA 95813
Mr. L. RoslundDr. Randy Peters Naval Surface Weapons CenterAerojet Strategic Propulsion Co. Code RiOCBldg. 05025 - Dept 5400 - MS 167 White Oak, Silver Spring, ID 20910P.O. Box 15699CSacramento, CA 95813 Dr. David C. Sayles
Ballistic Missile DefenseDr. D. Mann Advanced Technology CenterU.S. Army Research Office P.O. Box 1500Engineering Division Huntsville, AL 35807Box 12211Research Triangle Park, NC 27709-2211
Ser 432/84/211DYN* Revised January 1985
33
(DYN)
DISTRIBUTION LIST
Mr. R. Geisler DirectorATTN: DY/MS-24 US Army Ballistic Research Lab.AFRPL ATTN: DRYBR-IBDEdwards AFB, CA 93523 Aberdeen Proving Ground, MD 21005
CommanderNaval Air Systems Command US Army Missile CommandATTN: Mr. Bertram P. Sobers ATTN: DRSMI-RKL
NAVAIR-32OG Walter W. WhartonJefferson Plaza 1, RM 472 Redstone Arsenal, AL 35898Washington, DC 20361
Dr. Ingo W. MayR.B. Steele Army Ballistic Research Lab.Aerojet Strategic Propulsion Co. ARRADCOMP.O. Box 15699C Code DRXBR - 1BDSacramento, CA 95813 Aberdeen Proving Ground, MD 21005
Dr. E. ZimetMr. M. Stosz Office of Naval TechnologyNaval Surface Weapons Center Code 071Code RIOB Arlington, VA 22217White OakSilver Spring, MID 20910 Dr. Ronald L. Derr
Naval Weapons CenterMr. E.S. Sutton Code 389Thiokol Corporation China Lake, CA 93555Elkton DivisionP.O. Box 241 T. BoggsElkton, MD 21921 Naval Weapons Center
Code 389Dr. Grant Thompson China Lake, CA 93555Morton Thiokol, Inc.Wasatch Division Lee C. Estabrook, P.E.MS 240 P.O. Box 524 Morton Thiokol, Inc.Brigham City, UT 84302 P.O. Box 30058
Shreveport, Louisiana 71130Dr. R.S. ValentiniUnited Technologies Chemical Systems Dr. J.R. WestP.O. Box 50015 Morton Thiokol, Inc.San Jose, CA 95150-0015 P.O. Box 30058
Dr. Janet Wall G.T. BowmanCode 012 Atlantic Research Corp.Director, Research Administration 7511 Wellington RoadNaval Postgraduate School Gainesville, VA 22065Monterey, CA 93943
E I
Ser 432/84/21.i1:lvYRevise ,, january 19b5
* 34
(DYN)DISTRIBUTION LIST
R.E. Shenton Brian WheatleyAtlantic Research Corp. Atlantic Research Corp.7511 Wellington Road 7511 Wellington RoadGainesville, VA 22065 Gainesville, VA 22065
Mike Barnes Mr. G. Edwards,Atlantic Research Corp. Naval Sea Systems Command7511 Wellington Road Code 62R32Gainesville, VA 22065 Washington, DC 20362
Dr. Lionel Dickinson C. DickinsonNaval Explosive Ordinance Naval Surface Weapons CenterDisposal Tech. Center White Oak, Code R-13Code D Silver Spring, MD 20910Indian Head, MD 20340
Prof. J.Tk Dickinson Prof. John DeutchWashington State University MITDept. of Physics 4 Department of ChemistryPullman, WA 99164-2814 Cambridge, MA 02139
M.H. Miles Dr. E.H. deButtsDept. of Physics Hercules Aerospace Co.Washington State University P.O. Box 27408Pullman, WA 99164-2814 Salt Lake City, UT 84127
Dr. T.F. Davidson David A. FlaniganVice President, Technical Director, Advanced TechnologyMorton Thiokol, Inc. Morton Thiokol, Inc.Aerospace Group Aerospace Group3340 Airport Rd. 3340 Airport Rd.Ogden, UT 84405 Ogden, UT 84405
Mr. J. Consaga Dr. L.H. CavenyNaval Surface Weapons Center Air Force Office of ScientificCode R-16 ResearchIndian Head, MD 20640 Directorate of Aerospace Sciences
Bolling Air Force BaseNaval Sea Systems Command Washington, DC 20332ATTN: Mr. Charles M. Christensen
NAVSEA-62R2 W.G. RogerCrystal Plaza, Bldg. 6, Rm 806 Code 5253Washington, DC 20362 Naval Ordance Station
Indian Head, MD 20640
Mr. R. Beauregard Dr. Donald L. BallNaval Sea Systems Command Air Force Office of ScientificSEA 64E ResearchWashington, DC 20362 Directorate of Chemical &
Atmospheric SciencesBolling Air Force BaseWashington, DC 20332
"Ser 4321n4/211DYNRevised January 1985
* 35
(DYN)I (DYN)DISTRIBUTION LIST
Dr. Anthony J. Mo~tuszko Dr. H.G. AdolphAir Force Office of Scientific Research Naval Surface Weapons CenterDirectorate of Chemical & Atmospheric Code RllSciences White OakBolling Air Force Baso Silver Spring, 10 20910Washington, DC 20332
Dr. Michael Chaykovsky U.S. Army Research OfficeNaval Surface Weapons Center Chemical & Biological SciencesCode R11 DivisionWhite Oak P.O. Box 12211Silver Spring, MD 20910 Research Triangle Park, NC 27709
J.J. Rocchio Dr. John S. Wilkes, Jr.USA Ballistic Research Lab. FJSRL/NCAberdeen Proving Ground, MD 21005-5066 USAF Academy, CO 80840
Dr. H. RosenwasserAIR-320RNaval Air Systems CommandWashington, DC 20361
B. Swanson Dr. Joyce J. KaufmanINC-4 MS C-346 The Johns Hopkins UniversityLos Alamos National Laboratory Department of ChemistryLos Alamos, New Mexico 87545 Baltimore, MD 21218
Dr. James T. Bryant Dr. A. NielsenNaval Weapons Center Naval Weapons CenterCode 3205B Code 385China Lake. CA 93555 China Lake, CA 93555
Dr. L. RothsteinAssistant DirectorNaval Explosives Dev. Engineering Dept.Naval Weapons StationYorktown, VA 23691
Dr. Henry Webster, IllManager, Chemical Sciences BranchATTN: Code 5063Crane, IN 47522
Dr. A.L. SlafkoskyScientific AdvisorCommandant of the Marine CorpsCode RD-iWashington, DC 20380
Ser 432/84/340Revised January 1985 36
(DYN)
DISTRIBUTION LIST
K.D. Pae Prof. Edward PriceHigh Pressure Materials Research Lab. Georgia Institute of Tech.Rutgers University School of Aerospace EngineeringP.O. Box 909 Atlanta, CA 30332Piscataway, NJ 08854
J.A. BirkettDr. John K. Dienes Naval Ordnance StationT-3, B216 Code 5253KLos Alamos National Lab. Indian Head, MD 20640P.O. Box 1663Los Alamos, NX 87544
Prof. R.W. ArmstrongUniversity of Maryland
A.N. Gent Dept. of Mechanical EngineeringInstitute Polymer Science College Park, MD 20742University of AkronAkron, OH 44325
Herb RichterDr. D.A. Shockey , Code 385SRI International Naval Weapons Center333 Ravenswood Ave. China Lake, CA 93555Menlo Park, CA 94025
J.T. RosenbergDr. R.B. Kruse SRI InternationalMorton Thiokol, Inc. 333 Ravenswood Ave.Huntsville Division Menlo Park, CA 94025Huntsville, AL 35807-7501
G.A. ZimmermanG. Butcher Aeroject Tactical SystemsHercules, Inc. P.O. Box 13400P.O. Box 98 Sacramento, CA 95813Magna, UT 84044
Prof. Kenneth KuoW. Waesche Pennsylvania State UniversityAtlantic Research Corp. Dept. of Mechanical Engineering7511 Wellington Road University Park, PA 16802Gainesville, VA 22065
T.L. BoggsDr. R. Bernecker Naval Weapons CenterNaval Surface Weapons Center Code 3891Code R13 China Lake, CA 93155White OakSilver Spring, 0D 20910
. . . .. . ....
Ser 432/84/340Revised January 1985 37
(DYN)
DISTRIBUTION LIST
J.M. CulverDr. C.S. Coffey Strategic Systems Projects OfficeNaval Surface Weapons Center SSPO/SP-2731Code R13 Crystal Mall #3, RP 1048W'hite Oak Washington, DC 20376Silver Spring, MD 20910
Prof. G.D. DuvallD. Curran Washington State UniversitySRI International Department of Physics333 Ravenswood Avenue Pullman, WA 99163Menlo Park, CA 94025
Dr. E. MartinE.L. Throckmorton Naval Weapons CenterCode SP-2731 Code 3858Strategic Systems Program Office China Lake, CA 93555Crystal Mall #3, RM 1048Washington, DC 23076
C. GotzmerNaval Surface Weapons Center Defense Technical Information CenterCode R-11 Bldg. 5, Cameron StationWhite Oak Alexandria, VA 22314Silver Spring, MD 20910 (12 copies)
G.A. Lo Dr. Robert Polvani
3251 Hanover Street National Bureau of Standards
B204 Lockheed Palo Alto Research Lab Metallurgy Division
Palto Alto, CA 94304 Washington, D.C. 20234
R.A. Schapery DirectorCivil Engineering Department Naval Research LaboratoryTexas A&M University Attn: Code 2627College Station, TX 77843 Washington, DC 20375
(6 copies)
Dr. Y. Gupta Administrative ContractingWashington State University Officer (see contract forDepartment of Physics address) }J<Pullman, WA 99163 (1 copy)