scholarly journals Multilayer Graphene/Carbon Black/Chlorine Isobutyl Isoprene Rubber Nanocomposites

Polymers ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 95 ◽  
Author(s):  
Daniele Frasca ◽  
Dietmar Schulze ◽  
Volker Wachtendorf ◽  
Bernd Krafft ◽  
Thomas Rybak ◽  
...  
Keyword(s):  
Carbon Black ◽  
Multilayer Graphene ◽  
Rubber Nanocomposites ◽  
Isoprene Rubber

Multilayer graphene/chlorine-isobutene-isoprene rubber nanocomposites: the effect of dispersion

2016 ◽  
Vol 27 (7) ◽  
pp. 872-881 ◽  
Author(s):  
Daniele Frasca ◽  
Dietmar Schulze ◽  
Volker Wachtendorf ◽  
Michael Morys ◽  
Bernhard Schartel
Keyword(s):  
Multilayer Graphene ◽  
Rubber Nanocomposites ◽  
Isoprene Rubber

MULTILAYER GRAPHENE CHLORINE ISOBUTYL ISOPRENE RUBBER NANOCOMPOSITES: INFLUENCE OF THE MULTILAYER GRAPHENE CONCENTRATION ON PHYSICAL AND FLAME-RETARDANT PROPERTIES

2016 ◽  
Vol 89 (2) ◽  
pp. 316-334 ◽  
Author(s):  
D. Frasca ◽  
D. Schulze ◽  
M. Böhning ◽  
B. Krafft ◽  
B. Schartel
Keyword(s):  
Flame Retardant ◽  
Barrier Properties ◽  
Graphene Sheets ◽  
Multilayer Graphene ◽  
Gas Barrier ◽  
Low Concentrations ◽  
Rubber Nanocomposites ◽  
Flame Retardant Properties ◽  
Gas Barrier Properties ◽  
Isoprene Rubber

ABSTRACT In recent years, different nanoparticles have been proposed and successfully introduced as nanofillers in rubber nanocomposites. In this study, multilayer graphene (MLG) is proposed as a nanoparticle that functions efficiently at low concentrations. MLG consists of just 10 or so graphene sheets. Chlorine isobutyl isoprene rubber (CIIR)/MLG nanocomposites with different MLG loadings were prepared using an ultrasonically assisted solution mixing procedure followed by two-roll milling. The incorporation of MLG provides a clear improvement in the rheological, mechanical, curing, and gas barrier properties of the nanocomposites. Adding only 3 phr of MLG to CIIR increased the Young's modulus by more than two times and reduced the permeability of O2 and CO2 by 30%. Higher nanofiller concentrations yielded further improvement in the properties of the nanocomposites. Moreover, CIIR/MLG nanocomposites showed reduced flammability.

The Effect of New Antiagglomerators of the Quantislip Series for Solution-Polymerised Rubber on the Properties of cis-1,4-polyisoprene

2016 ◽  
Vol 43 (12) ◽  
pp. 1-8
Author(s):  
I.Sh. Nasyrov ◽  
V.Yu. Faizova ◽  
D.A. Zhavoronkov ◽  
S.M. Kavun ◽  
A.S. Kolokol'nikov ◽  
...  
Keyword(s):  
Carbon Black ◽  
Stearic Acid ◽  
Pilot Plant ◽  
Strength Properties ◽  
Calcium Stearate ◽  
Rubber Crumb ◽  
Chlorine Ions ◽  
Active Centres ◽  
Isoprene Rubber ◽  
Rubber Filler

The results of pilot-plant tests of SKI-3 isoprene rubber containing a series of Quantislip™ rubber crumb antiagglomerators (AAs) are presented. Tests were conducted at OAO ‘Sintez Kauchuk’, with the AAs introduced at the degassing stage. The new Quantislip AAs, developed by OOO ‘NPP Kvalitet’, ensure a reduction in calcium and chlorine ions in wastewater and in its alkalinity. An improvement in the elastic strength properties of carbon-black-filled vulcanisates based on cis-1,4-polyisoprene (SKI-3) and containing AAs was shown. For the production of SKI-3 rubber, an optimum AA composition – Quantislip of grade BM-2R – was developed. When BM-2R is used, stearic acid, formed in standard rubber with a calcium stearate suspension as AA, is eliminated. The possible mechanism of improvement in the strength properties of carbon-black-filled vulcanisates based on SKI-3 is discussed. This is possibly due to an improvement in rubber–filler interaction as a result of there no longer being any competition between segments of macromolecules and stearic acid for active centres when carbon black is adsorbed on the surface.

Damping Performance of CB Filled NR/ENR, NR/BR and NR/IIR Compounds

2014 ◽  
Vol 716-717 ◽  
pp. 70-73
Author(s):  
Yue Qiong Wang ◽  
Zheng Peng ◽  
Jie Ping Zhong ◽  
Kui Xu ◽  
Chang Jin Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Carbon Black ◽  
Natural Rubber ◽  
Dynamic Mechanical Properties ◽  
Comprehensive Analysis ◽  
Butadiene Rubber ◽  
Mechanical Mixing ◽  
Mixing Method ◽  
Isoprene Rubber

Natural rubber (NR)/epoxidized natural rubber (ENR)/carbon black (CB), natural rubber/butadiene rubber (BR)/carbon black and natural rubber/isobutylene-isoprene rubber (IIR)/carbon black compounds were prepared by mechanical mixing method. The mechanical properties, dynamic mechanical properties for the compounds were investigated respectively. The temperature range of tanδ>0.3 of NR/ENR40/CB compound was wider and shifted to high temperature than NR/CB compound. Comprehensive analysis indicated that NR/BR/CB and NR/IIR/CB compounds had no better damping performance than NR/CB compounds, while NR/ENR/CB compound had better damping performance.

A Broad-Line NMR Investigation of Isoprene Rubber Filled with Carbon Black

1976 ◽  
Vol 49 (5) ◽  
pp. 1182-1192
Author(s):  
L. G. Svensson ◽  
S. E. Svanson
Keyword(s):  
Carbon Black ◽  
Rubber Matrix ◽  
Segmental Motion ◽  
Broad Line ◽  
Rubber Content ◽  
Actual Distribution ◽  
Critical Loading ◽  
Restricted Mobility ◽  
Lower Temperature ◽  
Isoprene Rubber

Abstract The results of NMR measurements on IR filled with various carbon blacks lead to the following conclusions. The rubber matrix is a heterogeneous system characterized by two rubber phases of different chain mobilities. One phase is almost similar to unfilled IR at the temperature of measurement, while the properties of the other are nearly identical to those of pure IR at a lower temperature. The following observations apply to the phase with restricted mobility : 1. The quantities of rubber and carbon black in this phase are proportional below a critical loading, which supports the assumption that immobilization is limited to the immediate surroundings of the filler aggregates. The critical loading varies with structure and defines the packing density above which the formation of a coherent gel becomes important. 2. The rubber content decreases with rising temperature, showing that the activation energy for the onset of segmental motion varies within the phase. The mobility of the rubber chains directly bound to the surface is restricted even far above the glass transition temperature. 3. The degree of immobilization varies with temperature but is mostly independent of carbon black type and loading. 4. The actual distribution of immobilized rubber within an aggregate is not completely known, but some evidence exists for the immobilization of a thin surface layer as well as parts of the occluded rubber. A considerable immobilized rubber fraction is independent of surface area and structure.

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