Influence of ionizing radiation on rheological, mechanical and electrical properties of various sorts of natural and synthetic rubber

1988 ◽  
Vol 125 (2) ◽  
pp. 243-253 ◽  
Author(s):  
D. Gavrilă ◽  
J. Păun
Keyword(s):  
Electrical Properties ◽  
Ionizing Radiation ◽  
Mechanical And Electrical Properties ◽  
Synthetic Rubber ◽  
Natural And Synthetic

Experiments on Synthetic Rubbers of the Butadiene Type. II. Mechanical and Electrical Properties of Buna Ebonites

1944 ◽  
Vol 17 (3) ◽  
pp. 719-730
Author(s):  
J. R. Scott
Keyword(s):  
Electrical Properties ◽  
Natural Rubber ◽  
Breaking Strength ◽  
Present Report ◽  
Butadiene Rubber ◽  
Type Ii ◽  
Normal Amount ◽  
Mechanical And Electrical Properties ◽  
Plastic Yield ◽  
Synthetic Rubber

Abstract The experiments described here were designed to examine the properties of ebonites made from various kinds of Buna synthetic rubber, including Buna-85, Buna-115, Buna-S and Buna-N. All Bunas are said to form ebonites by vulcanization with the normal amount of sulfur, Buna-85 and Buna-115 giving the best products. The resulting ebonites are stated to have much higher plastic yield temperatures than ordinary ebonite, figures quoted ranging from 100° to 175° C by the Martens test, compared with 70° to 90° C for natural-rubber ebonites. It may be added that Russian butadiene rubber likewise is claimed to give ebonites with much higher yield temperatures, namely, up to 160° C by a Vicat needle test, than ordinary ebonites, which give about 93° C. On the other hand, Buna ebonites are relatively brittle. The electrical properties of these ebonites are said to be good, and in this connection it should be noted that soft vulcanizates made from Buna-85 and Buna-115 have lower power factors than those made from natural rubber. Buna ebonites are more resistant than ordinary ebonite to attack by chemicals and to the swelling action of liquids such as benzene and nitrobenzene. The present report deals with certain properties of Buna ebonites, viz., plastic yield, cross-breaking strength, impact strength, radio-frequency permittivity and power factor.

Study of mechanical and electrical properties of AlMgSi alloys

2010 ◽  
Vol 35 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Fares Serradj ◽  
Rebal Guemini ◽  
Hichem Farh ◽  
Karim Djemmal
Keyword(s):  
Electrical Properties ◽  
Mechanical And Electrical Properties

scholarly journals The Physical-Mechanical and Electrical Properties of Cast Aluminum-Based Alloys Reinforced with Diamond Nanoparticles

2015 ◽  
Vol 57 (11) ◽  
pp. 1485-1490 ◽  
Author(s):  
S. A. Vorozhtsov ◽  
А. P. Khrustalyov ◽  
D. G. Eskin ◽  
S. N. Кulkov ◽  
N. Alba-Baena
Keyword(s):  
Electrical Properties ◽  
Cast Aluminum ◽  
Diamond Nanoparticles ◽  
Mechanical And Electrical Properties

scholarly journals Investigation of Graphene Derivatives on Electrical Properties of Alkali Activated Slag Composites

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4374
Author(s):  
Wu-Jian Long ◽  
Xuanhan Zhang ◽  
Biqin Dong ◽  
Yuan Fang ◽  
Tao-Hua Ye ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Mechanical Performance ◽  
Structural Defects ◽  
Alkali Activated Slag ◽  
Mechanical And Electrical Properties ◽  
Reduced Graphene ◽  
Graphene Derivatives ◽  
Activated Slag ◽  
Alkali Activated

Reduced graphene oxide (rGO) has been widely used to modify the mechanical performance of alkali activated slag composites (AASC); however, the mechanism is still unclear and the electrical properties of rGO reinforced AASC are unknown. Here, the rheological, mechanical, and electrical properties of the AASC containing rGO nanosheets (0, 0.1, 0.2, and 0.3 wt.%) are investigated. Results showed that rGO nanosheets addition can significantly improve the yield stress, plastic viscosity, thixotropy, and compressive strength of the AASC. The addition of 0.3 wt.% rGO nanosheets increased the stress, viscosity, thixotropy, and strength by 186.77 times, 3.68 times, 15.15 times, and 21.02%, respectively. As for electrical properties, the impedance of the AASC increased when the rGO content was less than 0.2 wt.% but decreased with the increasing dosage. In contrast, the dielectric constant and electrical conductivity of the AASC containing rGO nanosheets decreased and then increased, which can be attributed to the abundant interlayer water and the increasing structural defects as the storage sites for charge carriers, respectively. In addition, the effect of graphene oxide (GO) on the AASC is also studied and the results indicated that the agglomeration of GO nanosheets largely inhibited the application of it in the AASC, even with a small dosage.

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