the development of primary explosives in china€¦ · the development of primary explosives in...
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The Development of Primary Explosives in China
P f Zh T l iProf. Zhang Tonglai
Beijing Institute of Technology, State Key Lab. of Explosion Science & Technology
[email protected], http://www.pyrochem.com.cn
Hong Kong Dec. 8, 2010
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Resume Date of birth: Feb. 25, 1960
Position: Full professor, Ph. D AdvisorPosition: Full professor, Ph. D Advisor
Beijing Institute of Technology
Ed ti Education:
1978.10-1982.7 diploma Bachelor,
1988.9-1990.7 Master of Science,
1990.9-1993.3 Ph. D.
Nanjing University of Science and Technology
1993.3-1995.3 Postdoctoral fellowshipp
Beijing University of Science and Technology
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Brief IntroductionBrief IntroductionResearching Areas:
Mainly on Primary explosive for civil application and ammunitions
Include: Energetic coordination compound, energetic salts, preparation, manufacture characterization analysis test et al works around thesemanufacture, characterization, analysis, test, et al works around these areas.
Awards: National Invention Award, 2nd, one
National Defense Project Awards, 2nd, Two, 5rd, two
Government Award Allowances in 2005
Excellent MS and Ph. D. Owner of Defense Industrial in 2005
Invention patent 22
Publications: more than 300 《SCI》 《EI》and《ISTP》cited more Publications: more than 300,《SCI》,《EI》and《ISTP》cited more than 200
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The foundations
During the second world wide war
Anti-Japanese warAnti Japanese war
Black gun powder
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past Hg(ONC)2pMercury Fulminate
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The FoundationsThe Foundations
Mercury Fulminatey
It was manufactured in valley, beach of river y,
for safety
Used for ammunitions and mining
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The FoundationsThe Foundations
Since the New China established
Imported technology from the former Soviet Union
Industrial conditions and scale up to production line
Mining cap loading and ammunitions
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PropertiesProperties
Easy to be manufactured
E t i Easy to use in caps
Good application properties in percussion Good application properties in percussion
composition, stab composition
Sensitive to friction, percussion and flame
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DrawbackDrawback
Mercury toxicity
t t ll ti i t l h il waste water pollution environmental heavily
Incompatible with aluminum Incompatible with aluminum
The Mercury pollution is the main concerns now,The Mercury pollution is the main concerns now,
and it is given up in China from 1990’s totally
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Now 1 Lead Azide
Main Primary explosive on the World
A series of products of Lead azide with
diff t difidifferent modifiers
No new compounds can exceed LA on DDTNo new compounds can exceed LA on DDT
processprocess
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Structure
Pb(N )Pb(N3)2
N N N
N N N
Pb
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PropertiesProperties
High friction, high weight drop sensitivities
Low flame sensitivity
Good stability and tolerance with temperaturey p
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CharacteristicsCharacteristics
The most powerful the shortest DDTThe most powerful, the shortest DDT length The lowest loading for initiating of RDX The loading weight is as low as 5 to 10mg The loading weight is as low as 5 to 10mg
for initiating RDX in tiny detonator It is still the most powerful primary
explosive in the worldexplosive in the world
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Drawbacks
Bad compatible with copper, copper
containing alloy and RDXcontaining alloy and RDX
One of the raw material is NaN3, acute 3,
toxicity to human, as KCN!
Waste water contain azide, heavy metal lead
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Now 2 Flammable KingLead Trinitroresorcinate
O2N NO2
O Pb H2O.
O2N 2
O
1 Easy flammable and easy igniting
NO2
O
1. Easy flammable and easy igniting
2. Highest static electric sensitivity
3. Low output for initiating ability for secondary p g y yexplosives
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{Pb2(TNR)(NO3)(H2O)}n{ 2( )( 3)( 2 )}n
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Now 3 The excellent sensitizerT tTetrazene
NHN NH2 NH
N
N
N
NC NN CN NH2 H2O
1. Mainly used as composition in mixture itcomposite
2 It is very low thermal stability with decomposition point as low as 114 .
3 bad flowing ability, low output, and can’t be used in singly
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Now 4 Pollution MakerPollution Maker----DDNPDDNP
O2N N
O N
O2N
NO2
Dia oDiNitroPhenolDeep color waste water
1. Low initiating ability,minimum load is
i 120 f
DiazoDiNitroPhenol
as high as 120mg for RDX
2.Very serious waste water with deep color,
pollution is very heavilypollution is very heavily
3. Mainly used in mining caps
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Now 5 Mixing Compositionsg p
M lti l lt KDMultiple salts: KD
Basic lead picrate, Lead azide, basic lead azide, lead
nitrate formed in quantitatively, stable mixture
Co-precipitates: DS
Lead styphnate and lead azide formed co-precipitate
chemically
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Characteristics
1 All of them are high sensitive to mechanical1. All of them are high sensitive to mechanical
percussion, stab, and friction stimulus!p , ,
2. Safety is the main concerns during the
production and applications
3. Stability and compatibility is not as good as
desired
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The development orientationThe development orientationfor new primary explosive
Coordination CompoundsCoordination Compounds
[M Lx ] (A)y[ ] ( )y
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Cobalt 5-cyano-tetrazolato-quino
amines Perchlorate
60’s,Sandia National lab. CP explosive
N C CN
N NN
CNH3H3N
(ClO4)2
CoH3N NH3
NH3
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Cobalt bis(5-nitro-tetrazolato)-teraamines Perchlorate
1986,Bate declared BNCP explosive;
2005,Talawar reported BNCP, Ni、Cu and Zn from India
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DrawbacksDrawbacks
Very time consuming for preparation
Very low yield
Very expensive
Not suitable for large scale application
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Design of NewPrimary ExplosivePrimary Explosive
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In our group
Selection of Metals
s IA :K , Css IA :K , Cs
s IIA : Mg, Ca , Sr, Ba
p heavy metal :Pb、Bi
d zone: Mn ﹑ Fe ﹑Co ﹑Ni d zone: Mn ﹑ Fe ﹑Co ﹑Ni
ds zone:Cu ﹑Zn ﹑Cd ﹑Ag、Hg
Main concerns are cost, toxicity and pollution
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Selection of LigandSelection of Ligand
1. Amonia, hydrazine, carbohydrazine,
amonourea、aminoguandine, carbazate
2. TO、 NTO 、ATO、DATZ、ATZ et al
nitrogen rich heterocycle compounds
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Ligand
H(4)
N(1)
H(2)
H(5)H(3)
N(2)
H(6)
H(3)
( )
N(1)
H(4)
NH3 NH2NH2 Carbohydrazide3 CarbohydrazideCHZ
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Ligand
AU
MHC
AG
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LigandLigand
T iAminoTetrazole
Triazone
AminoTriazone
1,5-DiAminoTetrazole
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Characteristics of ligandsCharacteristics of ligands
High nitrogen contents
Give out high quantity of gas and
energy
Good stability in ordinary conditionsy y
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Selection of Anion
Oxygen deliver and high oxidization ability
Easy explode or potential explosive
Suitable stability, and easy be initiated to
combustion or explode by external stimulus
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AnionsAnions
• Inorganic:nitrate, perchlorate
• Organic:DAN、trinitromethane、g
picrate, styphnate, NTO et al.picrate, styphnate, NTO et al.
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Structures of AnionsStructures of Anions
ClO4- NO3
-ClO4 NO3
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Structures of Anions
NTO-
DNR
PA-
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Structures of Anions
Styphnates
HTNR-
TNRTNR=
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Structures of Anions C6H3N3O9·2/3H2O
K1≈1.52×10-2
TNPG
K2 ≈2.44×10-4
K3 ≈6.3×10-8
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Structures of Anions
Trinitromethane C H
N O 2
O 2 NTrinitromethaneN O 2
2
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X-ray methodsX ray methods
LatticeParameters
Diff tCrystalcultured
preparationDiffractomerycultured
Expressiondescription
AnalysisGuide fordesign
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DiffractometerDiffractometer
Rigaku X-ray diffractometer
Saturn 724+ CCD
MoKα, -180
Graphite monochrome
λ 0 071073 nm λ=0.071073 nm
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Diffractometer
四圆衍射仪 CCD衍射仪四圆衍射仪 CC 衍射仪
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New Synthsized Compoundsy p
1. Nitrates2. NTO2. NTO3. Picrates4 St h t4. Styphnates5. TNPG6. Trinitromethanes7 Perchlorate7. Perchlorate
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NitratesNitrates
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[C (MHC) ](NO ) H O [Ni(MHC) ](NO ) H O[Co(MHC)3](NO3)2 · H2O [Ni(MHC)3](NO3)2 · H2O
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{[Co(EHC)3] (NO3)2}2
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[Ag2(DAT)4] (NO3)2
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Findingsg
Easy dissolved in solvents, hard to culture
single crystal
Low oxidization ability, low explosive power
[Ni(NH2NH2)(NO3)2]n is used in mining caps
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NTO
C dCompounds
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{[Ca(CHZ)2(H2O)](NTO)2·3.5H2O}n{[Sr(CHZ)2(H2O)](NTO)2·3.5H2O}n
{[Cd(NTO)2(CHZ)]·2H2O}n
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NTO Findings
NTO contained coordination compounds are easily to form 3D net structure Stable 5-ring exists for support the g pp
compounds NTO served as ligand or anion in these NTO served as ligand or anion in these
compounds
Usually contain many coordination water
d l tti tand lattice waters
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Pi tPicrate
CompoundsCompounds
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[Cd(ATZ)4(H2O)2](PA)2 ·2H2O
[Mn2(CHZ)4(H2O)2](PA)4·10H2O
[Mn(ATO)2(H2O)4](PA)2
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Potassium Picrate
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Findings for Picratesg
Picrate served as ligand and Picrate served as ligand and anion Some of the coordination
compounds have coordinationcompounds have coordination water or lattice waters Some of these compound used as
i iti itiignition composition
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Styphnate
CompoundsCompounds
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(NH4)2(TNR)
(AG) (TNR) H O(AG)2(TNR) ·H2O
(CHZ) (TNR)(CHZ)2(TNR)
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[Mg(H2O)6](HTNR)2 · 2H2O
[K(HTNR) (H2O)]n [K2(TNR) (H2O)]n
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[Mn2(TNR)2(CHZ)2(H2O)4]·2H2O
[Pb2(TNR)2(CHZ)2(H2O)2]·4H2O
[Ni(CHZ)3](TNR)·5H2O
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NO3-
[Pb2(TNR)(NO3)2(H2O)]n
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TNPGTNPGTriNitroPhloroGlucinolTriNitroPhloroGlucinol
CompoundsCompounds
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Propertiesp
K1≈1.52×10-2K2 ≈2.44×10-4K3 ≈6.3×10-8
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[K(H2TNPG)(H2O)]n
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[K2(HTNPG)]n[K2(HTNPG)]n
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[K3(TNPG)(H2O)2]n
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[K3(TNPG)(H2O)2]n[ 3( )( 2 )2]n
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[Rb (H2TNPG)]n2 n
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[Cs(H2TNPG)]n
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[Ba2(H2TNPG)2(H2O)2(OH)2][ 2( 2 )2( 2 )2( )2]
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Findings for polynitrophenols
Experimental results verified TNPG showing trivalentstate
PA、TNR、TNPG served as anion and ligand in thesecompounds
Coordination water and lattice water exist in thecompounds and crystals
PA 、 TNR 、 TNPG compounds exhibit powerfulcombustion and deflagration abilities
Some of these compounds used as primary explosives andignition compositions
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TNMTNM
Trinitromethanate
CompoundsCompounds
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[Zn(CHZ)3](TNM)2·2H2O[ ( )3]( )2 2
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[Mn(CHZ)3](TNM)2[Mn(CHZ)3](TNM)2
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[Cu(en)2(TNM)2][Cu(en)2(TNM)2]
en=1,2-ethylenediamine
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[Cd(en)3](TNM)2[Cd(en)3](TNM)2
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Results of TrinitromethanateResults of Trinitromethanate
•Trinitromethane served mainly as anion not ligand inTrinitromethane served mainly as anion not ligand in
coordination compounds
B t T i it th h li d l i d•But Trinitromethane show as ligand only in copper compound
•There is no coordinate water and lattice water in this kind of
compound
•Many of these compound possess high explosion ability and
the decomposition temperature is lower than 150C
•Some of them might be used as primary explosive, ignition g p y p , g
composition , oxidizer and oxidization additives.
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P hl tPerchlorateCompoundsCompounds
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[Ag(TO)2](ClO4) · H2O
{[Ag(ATO)2](ClO4)}n
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[M(DAT)6](ClO4)2
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[Mn (CHZ) ](ClO )[Mn (CHZ)3](ClO4)2[Co (CHZ)3](ClO4)2
[Ni (CHZ)3](ClO4)2 [Cd (CHZ)3](ClO4)2
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Conclusions for PerchloratesConclusions for Perchlorates
Perchlorate has the highest oxidization ability so that the
compound show best explosive ability, many of them can
be used as primary explosives
For the carbohydrazide perchlorate, at least three five-
member chelating ring formed in the coordinationmember chelating ring formed in the coordination
compounds. Therefore, this structure make the molecule
more stable and exhibit low mechanic sensitivitiesmore stable and exhibit low mechanic sensitivities
Metal carbohydrazide perchlorates are perspective
coordination compounds for exploring primary explosives.
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AchievementsAchievements Explored new molecules as many as 220
Published 300 articles
5 kinds of new compounds have been
f d h li i i d i llfound the application industrially
M d f th t Many awards from the government
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ThanksFFrom our
GroupGroup
Prof Prof Ass Prof ResearcherProf. QiaoPh.D
Prof. YangPh.D.
Ass. Prof. ZhangPh.D.
Researcher ZhouPh.D.
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