ELECTRON IRRADIATION OF POLYMER-FILLER SYSTEMS

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Proc. Japan Conf. Radioisotopes

OSTI ID:4707549

Asatsuma, A; Hirai, T; Nakada, O

The reinforcement of plastics by cooperative effects of high energy irridiation and filler loading was investigated. High- and low-density polyethylene and plasticized polyvinyl chloride were used as the base polymers in which II inorganic fillers includng those of silica, titan white, lead monoxide, and graphite were loaded. The filler content varied from zero up to 50%. Sheet specimens prepared by hot press were irradiated by electron beam in air at 1 Mev with doses of 0, 5, 10, 20, 30, and 10O Mrad. Tensile strengih, ultimate elongation, volume resistivity, dielectric constant, dielectric loss, and gel fraction were measured for each of the irradiated and unirradiated specimens. In low density polyethylene-filler systems the cooperative effect of irradiation and filler loading was clearly observed. The tensile strength or toughness (= tensile strength x ultimate elongation) of specimens with 10- to 30-Mrad irradiation and 10 to 20% filling exhibits much higher values than those of untreated ones. The effect may be ascribed to irradiation-induced bonding at polymer-filler intersurfaces. In high-density polyethylene-filler systems the cooperative effect of irradiation and filling was not so clear as in low density polyethylene-filler systems. In a piasticized polyvinyl chloride-filler system, the irradiation reduces the strength while the flller loading causes reinforcement. It was concluded that the combination of high-energy irradiation and filler loading is an effective method for bringing about reinforcement in plastics. (P.C.H.)

• Research Organization: Hitachi Central Research Lab.
• NSA Number: NSA-17-030204
• OSTI ID: 4707549
• Journal Information: Proc. Japan Conf. Radioisotopes, Journal Name: Proc. Japan Conf. Radioisotopes Vol. Vol: 5th, No. 4
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

AIR
BONDING
CEMENTS
COLLOIDS
DENSITY
DIELECTRICS
ELECTRON BEAMS
GENERAL AND MISCELLANEOUS
GRAPHITE
IRRADIATION
LOSSES
MEASURED VALUES
POLYETHYLENES
POLYMERS
POLYVINYLS
PREPARATION
PRESSURE
RADIATION DOSES
RADIATION EFFECTS
REACTOR FUELING
SHEETS
SILICON OXIDES
SURFACES
TENSILE PROPERTIES
TITANIUM COMPOUNDS
VOLUME