RESISTANCE TO IRRADIATION OF INSULATING SILICATE-FILLED RUBBER VULCANIZATES

Journal Article · Mon Oct 01 04:00:00 EDT 1962 · Kauchuk i Rezina

OSTI ID:4727207

Blokh, G A; Khloplyankina, M S; Yemel'yanova, A P; Pisarenko, A P; Karpov, V L

The effect of ionizing radiation on the properties of silicate rubber vulcanizates containing various amounts of silicate fillers introduced into the latex and coprecipitated with rubber was studied. Experiments were conducted with rubbers obtained from butadiene-styrene iatex with 22 to 57 parts silicate filler and from latex with 20 parts polystyrene latex and 19 to 30 parts silicate filler. The vulcanizates were made from mixes containing (in addition to varying filler amounts): rubber, 100 parts; paraffin, 2; rosin, 5; and thiuram, 1.5. The vulcanizates were gamma irradiated from a Co/sup 60/ source of 21000 g-equiv Ra with doses of 50 to 100 megarad. Irradiation lowered the tensile strength, elongation, and residual eiongation of the vulcanizates but increased their hardness. However, rubber vulcanizates containing 22 to 42 parts silicate filler irradiated with a dose of 50 megarad were shown to exhibit satisfactory mechanical properties, such as tensile strength, 80.2 to 88.7 kg/mm/sup 2/; and elongation, 470 to 520%. The addition of 20 parts polystyrene latex did not improve the resistance of valcanizates to irradiation. The introduction of 100 parts chalk or talcum into the rubber mixes sharply reduced the resistance. All the vulcanizates irradiated with a dose of 100 megarad were shown to lose strength and elasticity. (OTS)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-011286
• OSTI ID: 4727207
• Journal Information: Kauchuk i Rezina, Journal Name: Kauchuk i Rezina Vol. Vol: No. 10
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BUTADIENE
CALCIUM CARBONATES
CEMENTS
CHALK
COBALT 60
ELASTICITY
EMULSIONS
EOSIN
GAMMA RADIATION
HARDNESS
ION BEAMS
IRRADIATION
LATEX
MAGNESIUM SILICATES
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
MINERALS
PARAFFIN
PRECIPITATION
QUANTITY RATIO
RADIATION DOSES
RADIATION EFFECTS
RESINS
RUBBER
SILICATES
STABILITY
STYRENE
TALC
TENSILE PROPERTIES
VULCANIZATION