WorldCat Identities

MONSANTO RESEARCH CORP DAYTON OH

Overview
Works: 43 works in 55 publications in 1 language and 56 library holdings
Classifications: QD302,
Publication Timeline
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Most widely held works by MONSANTO RESEARCH CORP DAYTON OH
HIGH TEMPERATURE THERMOELECTRIC RESEARCH( )

5 editions published between 1963 and 1966 in English and held by 5 WorldCat member libraries worldwide

This report describes applied research directed toward utilizing high-temperature thermoelectric generators for spaceflight vehicle power supplies. Further investigations of the effect of dislocation scattering of phonons because of localized strain in the matrix of thermoelectric materials indicate that the dispersed particles should be as small as 0.02A. Metallographic examinations of segmented TE legs, exposed to 4000 hrs operation at hot junction of 1200 C showed that the junction between some of the n-type MCC 60 and MCC 40 segments had been overheated. Improved high-temperature measurements of the thermal diffusivity of MCC60 indicated that its thermal conductivity was substantially higher than had been previously determined. Specific heat measurements at temperatures ranging from ambient to 1200 C were completed on each MCC thermoelectric material. Disc-shaped TE elements with arc-plasma sprayed coatings to 1/4 inch thickness were successfully produced, and several conceptual generator designs for use with isotope heat sources were reported. (Author)
Development of fire-resistant water base hydraulic fluid( )

3 editions published between 1964 and 1965 in English and held by 3 WorldCat member libraries worldwide

Experiments were conducted, along with a complementary synthesis program, in an effort to establish the utility of phosphorus esters, phosphoramidates and partial ester (alkali) phosphates, and phosphonates as fire-resistant, pour point depressants
Radiation polymerization of acetylene derivatives( )

2 editions published between 1962 and 1963 in English and held by 2 WorldCat member libraries worldwide

Research on the radiation-induced polymerization of acetylene derivatives to produce polyene polymers with useful properties was concerned with synthesis of acetylene derivatives, thermal, chemical and radiation-induced polymerizations and copolymerizations of selected acetylene derivatives, and characterization and evaluation of the prepared polymers. Diethynylbenzenes were prepared and used as crosslinking agents in these polymerizations to insure solid products. Radiation yields with G values (number of monomer molecules polymerized per 100 ev of absorbed radiation) greater than 100 were observed in the copolymerizations of p-diethynylbenzene/propiolic acid (296) and p- diethynylbenzene/dimethylethynyl boronate (136) systems. Radiation yields for the polymerization and copolymerization of all other acetylene derivatives except propiolic acid were small and G values were less than 30. In general, the systems examined were thermally sensitive which necessitated low temperature radiolyses to determine radiation yields. Two polymeric systems, p-polyphenyl and polyferrocene, which should have long conjugated paths were prepared chemically and included in this study
PERFLUORINATED AROMATIC COMPOUNDS( Book )

2 editions published between 1965 and 1966 in English and held by 2 WorldCat member libraries worldwide

Preparations and synthetic studies have been carried out on difluoropyromellitic acid, tetrafluoroisophthalic acid, tetrafluorophenylene diamines, 3,3',4,4'-tetra-substituted-hexafluorobiphenyls, tetra- fluororesorcinol, sulphides, dithiols, and 2,3,5,6-tetrafluorobenzoic acid. The above, with other perfluorinated aromatic compounds were employed in the synthesis of perfluorinated aromatic model compounds and polymers. The hydrogenic analogues were also prepared for comparison of thermal and thermo- oxidative stabilities. Model compound structures include bibenzoxazoles, oxadiazoles, sulphonic esters, dithiocarbonates, amides, and imides, for which thermal decomposition temperatures are reported. Polymer structures include carbonates, hydrazides, and imides. Synthetic routes to perfluoro aralkyl compounds are being investigated. Starting materials are tetrafluorobenzene, octafluorobiphenyl, and perfluoroaliphatic aldehydes. Synthetic routes to perfluoro cyclohexyls via reactions of phenyl and pentafluorphenyl lithium with decafluorocyclohexene and o- and p- perfluoroxylene have been studied. Studies have been made of routes to pentachloropyridine, for the exchange reaction with potassium fluoride to yield pentafluoropyridine
Identification of volatile contaminants of space cabin materials by J. V Pustinger( )

2 editions published between 1966 and 1968 in English and held by 2 WorldCat member libraries worldwide

Fifty-five candidate materials for space cabin construction were stored for 30, 60, and 90 day periods at 23-25C, and 20-40% R.H. in environments of air at a pressure of one atmosphere and oxygen at 5 psia. The composition of the gas-off products were determined by mass spectrometry and gas chromatography. Additional analyses were performed on desorbates from four carbon canisters from space cabin simulators and the hydrolysis products of MCS 198
ANALYSIS OF THERMAL DEGRADATION OF GLASS REINFORCED PHENOLIC AND EPOXY LAMINATES( )

2 editions published between 1962 and 1963 in English and held by 2 WorldCat member libraries worldwide

Thermogravimetric analyses were made on Resinox SC-1008 silicone modified phenolic resin and 75% glass laminate and compared with similar samples of Epon 828 epoxy resin. The effects of atmosphere, sample geometry, inclusion of sized glass fabric, and instrument variables on the degradation kinetics of these materials were investigated. Kinetic constants were calculated for the materials from thermogravimetric analysis results and an empirical method of kinetic calculations is discussed. The thermal endurance limit of Resinox glass laminate was also calculated. Differential thermal analyses were carried out on Resinox and Epon laminates and theoretical kinetic relationships were used to facilitate their interpretation
FLUORINATED POLYMERS AND FLUIDS( Book )

2 editions published between 1967 and 1968 in English and held by 2 WorldCat member libraries worldwide

Poly(tetrafluoro-m-phenylene pyromellitimide) has been fabricated in the form of laminate with glass cloth, as filled and unfilled sintered material, and as solid foam. Poly(tetrafluoro-m/p-phenylene pyromellitimide) has been fabricated in the form of laminate with glass cloth. The flexural strength and modulus of the laminated and sintered polyimides have been investigated. Thermo-oxidative stability of a high order was observed, and thermo-oxidative comparisons were made with poly(m-phenylene pyromellitimide), poly(m-phenylene difluoropyromellitimide), and poly(tetrafluoro-m-phenylene difluoropyromellitimide). Poly(tetrafluoro-m-phenylene carbonate) was prepared and had thermo-oxidative stability of the same order as that of poly(m-phenylene carbonate). Reactions of 4-hydroxy-2,3,5,6-tetrafluorophenyl bis(trifluoromethyl) carbinol were investigated. The arylation of decafluorobiphenyl by aryl sulphonyl chlorides was also investigated. The syntheses of the intermediates are given. Syntheses are described for substituted perfluoro-biphenyls, oxydifluoromethylene-linked perfluoro-biphenyls, and perfluoro-alpha, omega-aryloxyalkanes
Investigation of Perforated Plastic Spheres Concept for Fuel Tank Fire Suppression( Book )

1 edition published in 1969 in English and held by 2 WorldCat member libraries worldwide

An investigation was conducted to establish the feasibility of using perforated hollow plastic spheres to pack aircraft fuel tanks to provide fire and explosion suppression capability. The program involved establishing several sphere configurations, producing test quantities, determining performance under electrical spark and incendiary gunfire conditions, and evaluating fuel system compatibility. These sphere configurations varying in diameter from 3/4 to 1 inch with perforations of 0.060 to 0.100 mils were evaluated. All configurations provided some explosion suppression, but the goal of 3 psi maximum peak pressure rise required for fuel tank applications was not achieved. Fuel system compatibility was slightly inferior to that experienced with polyurethane foam
High temperature hydraulic fluids by Edward S Blake( Book )

2 editions published between 1955 and 1956 in English and held by 2 WorldCat member libraries worldwide

Development of Analytical Techniques for Toxicokinetic Research by M. K Hershey( )

1 edition published in 1979 in English and held by 1 WorldCat member library worldwide

This report describes the methods developed for the analysis of monomethylhydrazine (MMH) and its metabolites in the urine and blood of laboratory rats which had been injected with MMH at concentrations of 7.5 mg/kg and 15 mg/kg. Modifications of this method to analyze for free MMH in urine and blood of human origin are also discussed
Evaluation of elastomers as o-ring seals for liquid rocket fuel and oxidizer systems( Book )

1 edition published in 1964 in English and held by 1 WorldCat member library worldwide

O-ring seals of selected elastomeric and compliant materials were evaluated for resistance to liquid rocket fuels in a simulated end-use test. The candidate elastomers were placed under compression in closed cells and exposed to the liquid and vapor of liquid rocket fuels and oxidizers for extended periods of time. Rate of fuel loss through the seal, and the change in physical properties of the seal materials were determined. Nitrogen tetroxide, mixed hydrazines, chlorine triflouride, 90% hydrogen peroxide, Hybaline A-5, and pentaborane were tested in direct contact with the Oring seals at 73F. Metal clad and polyethylene encapsulated elastometric O-rings were also tested for resistance to nitrogen tetroxide at 73F. The effect of temperature on elastomer endurance was determined by exposing the O-rings to nitrogen tetroxide, mixed hydrazines, and hydrogen peroxide at 160F. The effect of direct immersion in liquid rocket fueld on the physical properties of the seal materials was investigated by immersing promising O-ring candidates in nitrogen tetroxide, hydrogen peroxide, and mixed hydrazine
Elastomer compatibility with mil-l-007808f(usaf) lubricating oils by James R Gibson( Book )

1 edition published in 1967 in English and held by 1 WorldCat member library worldwide

Program objectives were to develop compatibility data relating to test temperatures, procedures, elastomers, and test fluids to aid the Air Force in the selection of standard evaluation conditions. These standard conditions are to be used in MIL-L-7808 and various elastomer seal specifications. Thirteen elastomer formulations and five lubricants (MIL-L-7808) were investigated. Immersion temperatures and times were varied according to elastomer composition (Viton, Fluorosilicone, Buna N) and the effect obtained. Change in hardness, elongation, tensile strength, and volume were determined. The maximum temperatures recommended for future tests are: Viton, 347 F; Fluorosilicone, 302 F; and Buna N, 257 F. Specimens exposed for 72 and 168 hr generally gave results that were approximately of the same order of magnitude. Difficulty was encountered in obtaining valid hardness values for O-ring specimens thus indicating the desirability for an improved test procedure. Current specifications are ambiguous (in their definition of test temperature measurement) and these should be clarified in future test methods in specifications. (Author)
A THERMOANALYTICAL INVESTIGATION OF POLYETHER URETHANE ELASTOMERS SUITABLE FOR ROCKET PROPELLANT BINDERS( Book )

1 edition published in 1964 in English and held by 1 WorldCat member library worldwide

To elucidate the firing instability encountered by the Air Force with some aged polyurethane rockets, which results in loss of chunks of propellant, an analytical investigation of thermal characteristics and stability was conducted on model compounds prepared from typical propellant raw materials, and on model propellant binder samples formulated with ammonium perchlorate to duplicate the chemical effects of the oxidizer. Formulation variables, catalysts and atmosphere all were found to affect thermal characteristics somewhat, but caused no catastrophic changes. A thermal popcorn effect was encountered at 300- 350C with samples containing large excesses of isocyanate and which had been exposed to atmospheric moisture. This effect can be accounted for by volatilizations and dissociations which occur below urethane dissociation temperatures. The mathematics of steady-state propellant burning and pop-corning are discussed. Analytical correlations for infrared assignments, proton resonance (NMR) assignments, and thermogravimetric analyses were developed for application to polyurethanes. (Author)
Infrared spectra of selected unsaturated aliphatic acids and acid derivatives( Book )

1 edition published in 1966 in English and held by 1 WorldCat member library worldwide

A series of unsaturated carbonyl compounds including acids, salts, acid halides and esters have been studied by means of infrared and Raman spectroscopy with the major emphasis on the 700-250 cm to the -1 power infrared region. A number of useful correlation bands have been found for the unsaturated acids and esters. Proposed assignments are presented for acrylic acid, sodium acrylate, methyl acrylate and vinyl acetate. Other spectral features such as hydrogen bonding, resonance, and rotational isomerization are discussed for these molecules
Studies in double focusing mass spectrometry( Book )

1 edition published in 1966 in English and held by 1 WorldCat member library worldwide

Several analytical approaches to metals analysis with the vacuum spark mass spectrograph are considered. Analyses are given for standard, low alloy steels. A study conducted on fragmentation by the sparking of polymers in the vacuum spark is presented. Mass spectra of polymers obtained in the vacuum spark are compared to gas source spectra of the polymer pyrolysis products and to spectra of the monomer. Though only preliminary information was obtained, it appears that the existence of stable groups such as the benzene ring of styrene, influences the spectrum to a greater extent than the ability of the polymers to unzip. Accurate mass measurement, using a special photo-plate reader designed for the Air Force Materials Laboratory, has been investigated and is discussed. The variation of a proportionality constant in the expression relating mass to line position is shown to be relatively large as one progresses along the plate. Thus the need for reference lines very close to the line to be determined is affirmed. (Author)
Fluorinated Compounds and Fluids( Book )

1 edition published in 1969 in English and held by 1 WorldCat member library worldwide

Improving Ultrasonic Transducer Assemblies Generating Aerosols for Instrumental Techniques of Chemical Analysis by Louis E Owen( )

1 edition published in 1971 in English and held by 1 WorldCat member library worldwide

The intent of this contract effort was to improve transducers employed in direct impingement ultrasonic nebulizers. Improved mounts providing better cooling were to be devised and superior surface coatings protecting active nebulizing surfaces from chemical attack were to be sought. During the contract period principal effort was given to the development of chemical- resistant coatings for the piezoelectric elements employed as nebulizing devices
SHOCK TUBE STUDIES OF FUEL-AIR IGNITION CHARACTERISTICS( )

1 edition published in 1965 in English and held by 1 WorldCat member library worldwide

Ignition induction times of hydrogen-air mixtures were measured after the reflected wave in a single-pulse shock tube as a function of mixture ratio, absolute pressure and temperature. The data have been correlated by a nonlinear regression program resulting in an equation for induction time as a function of these variables. The results support earlier work at this laboratory on argon- diluted hydrogen-oxygen experiments in that at temperatures below 1100 K the ignition delays became very long because of self-inhibition of the reaction through HO2 formation. The effects of added water vapor and nitric oxide on the ignition characteristics of hydrogen-air mixtures were studied. Both additives resulted in sensitization of the ignition reaction. A detailed investigation of the nitric oxide catalysis indicated that the maximum effect occurred at 0.5 mole percent of additive, where the ignition delay was decreased by a factor of 100 and the ignition temperature by 200 K. Nitrogen dioxide was found to be equally effective, but ammonia exhibited no sensitizing action. The ignition induction times of 0.5 and 1.0 equivalence ratio mixtures of methane-, butane-, and octane-air mixtures were determined from 0.2 to 10 milliseconds at a reflected shock pressure of 60 psia. The data are presented both in tabular and graphical form. All ignition delay data are discussed in light of related studies and potential kinetic mechanisms. Recommendations for future work are presented
Chemistry and synthesis of multifunctional chemical compounds( Book )

1 edition published in 1965 in English and held by 1 WorldCat member library worldwide

A study was carried out to investigate the chemistry and synthesis of certain high purity, tetrafunctional compounds in the substituted aromatic, alicyclic, and heterocyclic classes. The goal was the preparation of specific tetrols and tetramines having structural characteristics particularly advantageous for polymer formation. Compounds synthesized include: 1,2,4,5-cyclohexane- tetrol; 1,2,4,5-tetraacetoxy- benzene; 1,2,4,5-benzene- tetramine tetrahydrochloride; decahydropyrazino- (2,3,-b)pyrazine. Compounds whose syntheses were investigated include: 2,2'-biimidazolidine; 5,6,11,12- tetrahydroquinoxalino (2,3,-b)quinoxaline; 2,2'-spirobis (2-sila- benzimidazoline), 2,2'- bishexahydropyrimidine; 2,2'-bibenzimidazoline. (Author)
Synthesis of noncommercially available compounds( Book )

1 edition published in 1966 in English and held by 1 WorldCat member library worldwide

A total of 60 compounds were under consideration for synthesis during this second contract year. Of these materials, 42 were completed and shipped to the Chemical Research Laboratories, Edgewood Arsenal, Maryland or retained as intermediates for further research. These materials included heterocyclics, aminoalcohols, azabicyclics and carbamates. This report describes the experimental details of the syntheses of the completed compounds and the disposition of the remaining compounds. (Author)
 
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English (32)