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Viscoelastic properties of filled polymers
Some interlaminar shear fatigue properties
Viscoelastic properties of filled polymers
of carbon-fibre-reinforced plastics
Vinogradov, G. V., Malkin, A. Ya., Plotnikova, E. P., Sabsal, O. Yu. and Nikolayeva, N. E. International Journal
Owen, M. J. and Morris, S.
Plastics and Polymers, 1Iol 40, No 148, p 209 (Aug 1972) Unidirectional and orthogonally crossplied CFRP were prepared from prepreg sheet of high modulus surface treated and untreated carbon fibre and epoxy resin. Short term interlaminar shear strengths and interlaminar shear fatigue lines were determined in 3- and 4-point bending. The fatigue effect was found to be greater under this loading than under axial loading. The static and fatigue strengths of cross-plied laminates were lower than those of unidirectional ones. Surface treatment was less effective in improving fatigue properties than static properties. The fatigue strength of these CFRP samples was similar to that of GRP although the static shear strength was lower. The study of dynamical behaviour of
of Polymeric Materials, Iiol 2, No 1, p 1 (Oct 1972) The rheological properties of lowmolecular weight polysobutylenes filled with acetylene black to give volume fractions of 2.5 to 13% by volume were studied by means of rotational and capillary, viscometers and shear plastometers. At a certain filler concentration a structural skeleton appears which is responsible for the occurrence of a yield point. After the yield point the effect of the filler skeleton is reduced but the viscosity of the polymer system may increase by five or more decimal orders of magnitude.
STRUCTURES
fibreglass reinforced plastics by dynamical mechanical model Fujii, T., Mizukawa, K. and Zako, M.
Proc of 15th Japan Congress on Materials Research, pp 145-150 (1972) A new model is suggested to explain the tendencies of GRP to exhibit an increasing rigidity under cyclic testing and a change in kinematic elastic modulus during vibration testing. The use of GRP in water activable storage
battery containers Badger, J. P. and Englehardt, J. T.
Reinforced Plastics, Vol 16, No 5, p 130 (May 1972) The requirements of the material for the container of a storage battery activated by the addition of water are evaluated and summarized as the ability to operate at temperatures of 200 ° F and to withstand the corrosive effects of 93% sulphuric acid as well as a high impact strength and creep resistance. It is shown that glass reinforced high density polyethylene represents a favourable combination of cost and performance for automotive battery applications and is likely to find increased application as under-bonnet operating temperatures become higher.
Applications and fabrication techniques for balsa-covered FRP tanks Desai, R. R. Plastics Design and Processing, Vol 12, No 10, pp 2 0 - 2 3 (Oct 1972) A sandwich construction in which the balsa core provides compressive and shear resistance as well as giving thermal insulation and high impact strength, while FRP outer layers provide high tensile strength, is described. Such tanks are said to be suitable for transportation of chemicals, storage of petrol etc. The fabrication process involves a combination of roundlay-up and winding technique.
Elastic energy of heterophase systems of lamellar inclusions
Glass-fibre/plywood composite panels for freight container construction Jeffries, R. Reinforced Plastics, 1Iol 16, No 9, p 253 (Sept 1972) The properties of several types of dry freight containers are compared in a general review article and although a fibre-reinforced-plastics/plywoodcontainer costs about as much as an aluminium one it does not suffer from the same corrosion problems and is 15-20% lighter than its all steel equivalent. It is noted that although the initial investment may be higher, the lower life cycle cost makes GRP/plywood containers the most economical on the market. The physical properties of wood-polymer
The Physics o f Metals and Metallography, Vol 31, No 6, p 1 (1971)
Handa, T., Seo, I., Akimoto, H., Saito, M. and Ikeda, Y. Proc of 15th Japan Congress
A theory is presented for the prediction of the elastic energy of a stack of alternating, coherently bonded plates of two phases. The theory takes into account the elastic anistropy and difference in the elastic moduli of the phases. The derivation is related to isolated stacks of lamellar and to stacks enclosed in
on Materials Research, pp 158-163 (1972)
US PA TENTS Composite carbon electrode structure having improved electrical conductivity
Apparatus and process thereof for coating with polytetrafluoethylene and other
Mills, K. L. (Phillips Petroleum Co)
materials Deakin, S. T. (Sealectro Corp) US Pat
94
Corrugated fibre board clad with glass reinforced plastics, which is claimed to have a useful life 50% longer than that of timber and 25% longer than that of metal, is being used for the packaging of electronic and industrial components which require damage-free transit. The materials used for the GRP coated board comply with British Standard specifications and users include the Ministry o f Defence as well as the aerospace and electronics industries. The material is claimed to withstand continuous immersion in water and to be rot-, termite- and rodentproof. It is resistant to chemical attack and is an insulator.
composite materials prepared by ICT-type electron accelerator
Compiled by Dr J. W. Youren, IMRU, Industrial Innovation, Queen Mary College (University of London)
A carbon electrode structure, consists of a first and second section of carbon secured together and with a layer of finely divided conductive carbon disposed between the two sections, and having improved electrical conductivity.
Glass-clad corrugated fibreboard Reinforced Plastics, Vol 16, No 11, p 32 7 (Nt~ 1972)
Khachaturyan, A. G. and Shatalov, G. A.
Abstracts of patents
US Pat 3 676 324 (11 Jul 1972)
a matrix. The relationship between the crystal lattices of two coherently-bonded phases is considered.
The stabilizing effect of various piepolymer/monomer systems on the dimensions of beech ply veneers has been evaluated and the mechanical properties of the wood-polymer composite formed in this way have been studied.
Cemented carbide composition and method of preparation Rymas, F. (Walmet Corp) US Pat 3 677 722 (18 Jul 1972) This invention relates to improved cemented carbide compositions and particularly to modified tungsten-carbide/ cobalt composition which applied in a single cemented alloy process results in improved strength and hardness characteristics.
3 677 471 (18 Jul 1972)
Method of manufacturing consolidated articles by the use of steam atomised wax Sheridan, J. (Weyerhaeuser Co) US Pat 3 677 808 (18 Jul 1972)
An apparatus and method are described for coating surfaces with continuous film of polytetrafluoroethylene by spraying a heated stream of particles from a spray gun.
Steam is employed to atomize molten wax used as a water proof'rag agent in the manufacture of composite consolidated articles from materials such as wood and gypsum.
COMPOSITES
.
MARCH 1973
Viscoelastic properties of filled polymers
of carbon-fibre-reinforced plastics
Vinogradov, G. V., Malkin, A. Ya., Plotnikova, E. P., Sabsal, O. Yu. and Nikolayeva, N. E. International Journal
Owen, M. J. and Morris, S.
Plastics and Polymers, 1Iol 40, No 148, p 209 (Aug 1972) Unidirectional and orthogonally crossplied CFRP were prepared from prepreg sheet of high modulus surface treated and untreated carbon fibre and epoxy resin. Short term interlaminar shear strengths and interlaminar shear fatigue lines were determined in 3- and 4-point bending. The fatigue effect was found to be greater under this loading than under axial loading. The static and fatigue strengths of cross-plied laminates were lower than those of unidirectional ones. Surface treatment was less effective in improving fatigue properties than static properties. The fatigue strength of these CFRP samples was similar to that of GRP although the static shear strength was lower. The study of dynamical behaviour of
of Polymeric Materials, Iiol 2, No 1, p 1 (Oct 1972) The rheological properties of lowmolecular weight polysobutylenes filled with acetylene black to give volume fractions of 2.5 to 13% by volume were studied by means of rotational and capillary, viscometers and shear plastometers. At a certain filler concentration a structural skeleton appears which is responsible for the occurrence of a yield point. After the yield point the effect of the filler skeleton is reduced but the viscosity of the polymer system may increase by five or more decimal orders of magnitude.
STRUCTURES
fibreglass reinforced plastics by dynamical mechanical model Fujii, T., Mizukawa, K. and Zako, M.
Proc of 15th Japan Congress on Materials Research, pp 145-150 (1972) A new model is suggested to explain the tendencies of GRP to exhibit an increasing rigidity under cyclic testing and a change in kinematic elastic modulus during vibration testing. The use of GRP in water activable storage
battery containers Badger, J. P. and Englehardt, J. T.
Reinforced Plastics, Vol 16, No 5, p 130 (May 1972) The requirements of the material for the container of a storage battery activated by the addition of water are evaluated and summarized as the ability to operate at temperatures of 200 ° F and to withstand the corrosive effects of 93% sulphuric acid as well as a high impact strength and creep resistance. It is shown that glass reinforced high density polyethylene represents a favourable combination of cost and performance for automotive battery applications and is likely to find increased application as under-bonnet operating temperatures become higher.
Applications and fabrication techniques for balsa-covered FRP tanks Desai, R. R. Plastics Design and Processing, Vol 12, No 10, pp 2 0 - 2 3 (Oct 1972) A sandwich construction in which the balsa core provides compressive and shear resistance as well as giving thermal insulation and high impact strength, while FRP outer layers provide high tensile strength, is described. Such tanks are said to be suitable for transportation of chemicals, storage of petrol etc. The fabrication process involves a combination of roundlay-up and winding technique.
Elastic energy of heterophase systems of lamellar inclusions
Glass-fibre/plywood composite panels for freight container construction Jeffries, R. Reinforced Plastics, 1Iol 16, No 9, p 253 (Sept 1972) The properties of several types of dry freight containers are compared in a general review article and although a fibre-reinforced-plastics/plywoodcontainer costs about as much as an aluminium one it does not suffer from the same corrosion problems and is 15-20% lighter than its all steel equivalent. It is noted that although the initial investment may be higher, the lower life cycle cost makes GRP/plywood containers the most economical on the market. The physical properties of wood-polymer
The Physics o f Metals and Metallography, Vol 31, No 6, p 1 (1971)
Handa, T., Seo, I., Akimoto, H., Saito, M. and Ikeda, Y. Proc of 15th Japan Congress
A theory is presented for the prediction of the elastic energy of a stack of alternating, coherently bonded plates of two phases. The theory takes into account the elastic anistropy and difference in the elastic moduli of the phases. The derivation is related to isolated stacks of lamellar and to stacks enclosed in
on Materials Research, pp 158-163 (1972)
US PA TENTS Composite carbon electrode structure having improved electrical conductivity
Apparatus and process thereof for coating with polytetrafluoethylene and other
Mills, K. L. (Phillips Petroleum Co)
materials Deakin, S. T. (Sealectro Corp) US Pat
94
Corrugated fibre board clad with glass reinforced plastics, which is claimed to have a useful life 50% longer than that of timber and 25% longer than that of metal, is being used for the packaging of electronic and industrial components which require damage-free transit. The materials used for the GRP coated board comply with British Standard specifications and users include the Ministry o f Defence as well as the aerospace and electronics industries. The material is claimed to withstand continuous immersion in water and to be rot-, termite- and rodentproof. It is resistant to chemical attack and is an insulator.
composite materials prepared by ICT-type electron accelerator
Compiled by Dr J. W. Youren, IMRU, Industrial Innovation, Queen Mary College (University of London)
A carbon electrode structure, consists of a first and second section of carbon secured together and with a layer of finely divided conductive carbon disposed between the two sections, and having improved electrical conductivity.
Glass-clad corrugated fibreboard Reinforced Plastics, Vol 16, No 11, p 32 7 (Nt~ 1972)
Khachaturyan, A. G. and Shatalov, G. A.
Abstracts of patents
US Pat 3 676 324 (11 Jul 1972)
a matrix. The relationship between the crystal lattices of two coherently-bonded phases is considered.
The stabilizing effect of various piepolymer/monomer systems on the dimensions of beech ply veneers has been evaluated and the mechanical properties of the wood-polymer composite formed in this way have been studied.
Cemented carbide composition and method of preparation Rymas, F. (Walmet Corp) US Pat 3 677 722 (18 Jul 1972) This invention relates to improved cemented carbide compositions and particularly to modified tungsten-carbide/ cobalt composition which applied in a single cemented alloy process results in improved strength and hardness characteristics.
3 677 471 (18 Jul 1972)
Method of manufacturing consolidated articles by the use of steam atomised wax Sheridan, J. (Weyerhaeuser Co) US Pat 3 677 808 (18 Jul 1972)
An apparatus and method are described for coating surfaces with continuous film of polytetrafluoroethylene by spraying a heated stream of particles from a spray gun.
Steam is employed to atomize molten wax used as a water proof'rag agent in the manufacture of composite consolidated articles from materials such as wood and gypsum.
COMPOSITES
.
MARCH 1973