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.

Effect of Technical Carbon the Deformation-Strength Properties of Low Pressure Polyethylene

2020 ◽  
Vol 869 ◽  
pp. 229-233
Author(s):  
Timur A. Borukaev ◽  
Abubekir Kh. Shaov ◽  
Raisa D. Archakova ◽  
Zakhirat Kh. Sultigova
Keyword(s):  
Carbon Black ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
Entire Range ◽  
Filler Content ◽  
Strength Properties ◽  
Optimal Combination ◽  
High Density ◽  
Strength And Ductility ◽  
Properties Of Composites

The influence of carbon black on the deformation-strength properties of high density polyethylene is considered. It was found that the deformation-strength properties of the polymer matrix change over the entire range of the filler content. The amount of carbon black that can be introduced into high-density polyethylene and obtained a composite material with the optimal combination of stiffness, strength and ductility is established. It was shown that the change in the deformation-strength properties of composites is due to the behavior and influence of carbon black particles on the structure of the polymer matrix.

Bound—Rubber Formation in Diene Polymer Stocks

1958 ◽  
Vol 31 (2) ◽  
pp. 369-373 ◽  
Author(s):  
P. B. Stickney ◽  
E. E. McSweeney ◽  
W. J. Mueller ◽  
S. T. Palinchak
Keyword(s):  
Particle Size ◽  
Carbon Black ◽  
Recent Work ◽  
Experimental Approach ◽  
Polymer Gel ◽  
Fine Powders ◽  
Bound Rubber ◽  
Close Relationship ◽  
Static Extraction ◽  
Rubber Filler

Abstract The phenomenon of insolubilization of rubber by carbon black has been known for at least twenty-seven years. There have been many attempts during this time to establish a relationship between insolubilization, or bound rubber formation, and reinforcement of rubber by carbon black. It was postulated, as far back as 1925, that there was a parallelism between particle size and insolubilization. This in spite of the fact that the methods available for determining particle size of very fine powders at that time were relatively crude. It was postulated at that time that there was a close relationship between the phenomena of vulcanization and reinforcement. This concept has had recurrent periods of popularity since that time. The insolubilization of rubber by carbon black, or other pigments, has been estimated by various techniques by the early investigators in the field. In more recent work, the trend has been toward a very straightforward experimental approach. Bound rubber in an uncured rubber-filler compound is usually determined by static extraction using the same apparatus and techniques used in determining the gel content of unfilled polymers. It follows that, using this method, polymer insoluble because of crosslinking, or gel, cannot be distinguished from polymer insolubilized by incorporation of fine fillers. In investigating the formation of bound rubber, therefore, the presence of gel in the polymer being used, or formation of polymer gel during processing must be taken into account.

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.

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

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.

scholarly journals INFLUENCE TECHNOLOGICAL ADDITIVES ON PROPERTIES OF RUBBER BASED ON BUTADIENE-NITRILE CAOUTCHUC

2017 ◽  
Vol 60 (10) ◽  
pp. 53
Author(s):  
Ivan S. Spiridonov ◽  
Nikolay F. Ushmarin ◽  
Evgeniy N. Egorov ◽  
Sergey I. Sandalov ◽  
Nikolay I. Kol'tsov
Keyword(s):  
Carbon Black ◽  
Thermal Action ◽  
Strength Properties ◽  
Strength Characteristics ◽  
Rubber Matrix ◽  
Strength Index ◽  
Rubber Mixture ◽  
Butadiene Nitrile Rubber ◽  
Processing Aids ◽  
Hydrocarbon Media

Influence of various technological additives on processability of the rubber mixture and the elastic-strength properties of rubber based on butadiene-nitrile caoutchuc BNKS-28AMN was investigated. The study was conducted with the aim of establishing technological additives that increase the elastic-strength characteristics of rubber and its resistance to the action of aggressive hydrocarbon media. The composition of the rubber mixture to be studied included butadiene-nitrile rubber BNKS-28AMN, novoperoks BP-40, zinc monometacrylate, diaphene FP, acetononyl H, oligoester acrylates MGF-9 and TGM-3, carbon black filler P 803 and other ingredients. On lab rollers LB 320 150/150, rubber compound variants were prepared by mixing rubber with ingredients and processing aids. As technological additives were used lubstab-01, zinclet BB 222, dispersant Fl plus and oxanol CS-100. For the rubber mixture variants, the vulcanization characteristics on the MDR 3000 rheometer manufactured by Mon Tech were investigated. The rubber mixture was vulcanized in a two-storey hydraulic electrically heated press VP-400-2E at a temperature of 150 ° C for 30 min. Investigations of the elastic-strength properties of vulcanizates were carried out according to the existing standards for the rubber industry. The study of the thermo-aggressiveness of vulcanizates was carried out by determining the change in their elastic-strength properties after the thermal action of the standard liquid SZHR-1, as well as the change in mass after aging in a mixture of isooctane and toluene. As a result of the conducted studies it was found that the introduction of technological additives leads to an increase in the elastic-strength index of rubber by improving the dispersion of carbon black filler P 803 and other components of the mixture in the rubber matrix. The best elastic-strength characteristics and the smallest their change after exposure to aggressive hydrocarbonic fluids is characterized rubber containing zinkolet BB 222.Forcitation:Spiridonov I.S., Ushmarin N.F., Egorov E.N., Sandalov S.I., Kol'tsov N.I. Influence technological additives on properties of rubber based on butadiene-nitrile caoutchuc. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 10. P. 53-57

Plasma Polymerized Primers for Rubber to Metal Bonding: Characterization of the Interphase

1995 ◽  
Vol 385 ◽  
Author(s):  
Y. M. Tsai ◽  
F. J. Boerio ◽  
Dong K. Kim
Keyword(s):  
Zinc Oxide ◽  
Free Radicals ◽  
Carbon Black ◽  
Stearic Acid ◽  
Natural Rubber ◽  
Rubber Compound ◽  
Carbonyl Groups ◽  
Double Bonds ◽  
Metal Bonding

ABSTRACTPlasma polymerized acetylene films contained mono- and di-substituted acetylene groups, aromatic groups, and carbonyl groups which resulted from reaction of residual free radicals with oxygen when the films were exposed to the atmosphere. There was some evidence for formation of acetylides in the interphase between the films and the substrates. Reactions occurring in the interphase between the plasma polymerized films and natural rubber were simulated using a model rubber compound consisting of a mixture of squalene, zinc oxide, carbon black, sulfur, stearic acid, diaryl-p-diphenyleneamine, and N,N-dicyclohexylbenzothiazole sulfenamide (DCBS). Zinc oxide and cobalt naphthenate reacted with stearic acid to form zinc and cobalt stearates. The stearates reacted with the benzothiazole sulfonamide moiety of DCBS and with sulfur to form zinc and cobalt accelerator complexes and perthiomercaptides. The complexes and perthiomercaptides reacted with squalene and the plasma polymer to form pendant groups which eventually disproportionated to form crosslinks between squalene and the primer. Migration of double bonds during reaction of the model rubber compound with the films resulted in formation of conjugated double bonds in squalene.

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