Influence of Phytonorman Eco-Oils Nature and Content on Processing of the Elastomeric Materials Based on Nitrile Butadiene Rubber Analysis

The work presents the results of testing new eco-oils in elastomeric materials based on nitrile butadiene rubber (NBR). The influence of eco-oils grade and content on the rubber mixes based on NBR 2665 processing was studied. It is established that Phytonorman 212 acts as a technologically active additive that improves the rheological and relaxation characteristics of rubber mixes. Phytonorman 213 acts as an activator of the vulcanization process when eco-oils content is 2 phr. To maintain the complex of physical, mechanical and working performances, so as to prevent the slowdown of the vulcanization process at 7 phr eco-oil content it is recommended to adjust vulcanizing group component content and filler grade.

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Synergistical Performance Modification of Epoxy Resin by Nanofillers and Carboxyl-Terminated Liquid Nitrile–Butadiene Rubber

Materials ◽

10.3390/ma14164601 ◽

2021 ◽

Vol 14 (16) ◽

pp. 4601

Author(s):

Yuanjin Liu ◽

Lixiao Yao ◽

Yue Bu ◽

Qing Sun

Keyword(s):

Epoxy Resin ◽

Resin Matrix ◽

Relaxation Processes ◽

Butadiene Rubber ◽

Voltage Level ◽

Nitrile Butadiene Rubber ◽

Nano Alumina ◽

The Matrix ◽

Thermally Conductive ◽

Relaxation Characteristics

Epoxy composite materials are widely used in power equipment. As the voltage level increases, the requirement of material properties, including electrical, thermal, and mechanical, has also increased. Introducing thermally conductive nanofiller to the epoxy/liquid rubber composites system is an effective approach to improve heat performance, but the effects of thermally conductive nanofillers on relaxation characteristics remain unclarified. In this paper, nano-alumina (nano-Al2O3) and nano-boron nitride (nano-BN) have been employed to modify the epoxy/carboxyl-terminated liquid nitrile–butadiene rubber (epoxy/CTBN) composites system. The thermal conductivity and glass transition temperature of different formula systems have been measured. The effect of the nanofillers on the relaxation behaviors of the resin matrix has been investigated. Results show that the different kinds of nanofillers will introduce different relaxation processes into the matrix and increase the conductivity at the same time. This study can provide a theoretical basis for the synergistic improvement of multiple properties of epoxy resin composites.

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Influence of melamine formaldehyde microsphere on the vulcanization kinetics and mechanical properties of nitrile butadiene rubber

Journal of Elastomers & Plastics ◽

10.1177/0095244318769959 ◽

2018 ◽

Vol 51 (2) ◽

pp. 143-156 ◽

Cited By ~ 1

Author(s):

Jingyi Wang ◽

Yu Meng ◽

Tao Lu ◽

Jiabin Zhang ◽

Huajin Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Butadiene Rubber ◽

Curing Time ◽

Melamine Formaldehyde ◽

Mechanical Mixing ◽

Nitrile Butadiene Rubber ◽

Vulcanization Kinetics ◽

Kinetics Of ◽

Vulcanization Process ◽

Fractured Surface

The melamine formaldehyde (MF) microsphere/nitrile butadiene rubber (NBR) vulcanizates were prepared by adding MF into NBR through mechanical mixing, followed by a vulcanization process. The influences of MF on the vulcanization characteristics, vulcanization kinetics, and mechanical properties were investigated. The results showed that MF interacted with NBR through hydrogen bonds. In addition, parameter b calculated by the ratio of modulus and strains also demonstrated the strong interaction between MF and NBR. Adding MF into NBR would reduce the curing time of NBR compounds, and increase the curing rate, as well as the cross-linked density. The vulcanization kinetics of MF/NBR compounds could be simulated accurately by Ghoreishy’s model. The mechanical properties of MF/NBR increased with the incorporation of MF. The modulus at 100%, modulus at 300%, and tensile strength of NBR vulcanizates with 20 parts per hundred rubber MF had 155, 90, and 110% increment, respectively, compared with those of neat NBR. The MF also enhanced the tear strength of NBR by 80% with a rough tear-fractured surface of NBR recorded by scanning electron microscope.

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In-situ Modification of Graphene Oxide by Insoluble Sulfur and Application for Nitrile Butadiene Rubber

International Polymer Processing ◽

10.3139/217.3910 ◽

2020 ◽

Vol 35 (2) ◽

pp. 221-228

Author(s):

S.-B. Chen ◽

T.-X. Li ◽

S.-H. Wan ◽

X. Huang ◽

S.-W. Cai ◽

...

Keyword(s):

Graphene Oxide ◽

Butadiene Rubber ◽

Nitrile Butadiene Rubber ◽

In Situ Modification

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Pengaruh penambahan natural rubber (NR), epoxidation natural rubber (ENR-46) dan chlorprene rubber (CR) pada sifat kompon termoplastik

Jurnal Teknik Kimia ◽

10.36706/jtk.v26i2.538 ◽

2020 ◽

Vol 26 (2) ◽

pp. 62-69

Author(s):

Farida Ali ◽

Tuti I. Sari ◽

Andi A. Siahaan ◽

Al-Kautsar D. Arya ◽

Tri Susanto

Keyword(s):

Tensile Strength ◽

Natural Rubber ◽

Vinyl Chloride ◽

Butadiene Rubber ◽

Elongation At Break ◽

Nitrile Butadiene Rubber ◽

Poly Vinyl Chloride

Penelitian ini untuk mengetahui pengaruh penambahan Natural Rubber (NR) dan Epoxidation Natural Rubber (ENR-46) dengan kompatibiliser Chlorprene Rubber (CR) pada aplikasi kompon termoplastik Poly Vinyl Chloride (PVC) dan Nitrile Butadiene Rubber (NBR), variabel penelitian meliputi ENR-46/PVC/NBR/CR, NR/PVC/NBR/CR dan CR-NR/PVC/NBR, CR-ENR-46/PVC/NBR. Parameter pengujian sifat fisik-mekanik : Hardness (Shore A), Tensile Strength (Mpa), Elongation at Break (%) dan ketahanan terhadap pelarut minyak (n-Pentane, Toluene, Hexane dan Pertalite). Hasil penelitian didapatkan untuk sifat fisik-mekanik, semakin banyak penambahan NR Kekerasan kompon termoplastik akan menurun, Tensile Strength dan Elongation at Break kompon akan meningkat begitu juga dengan CR-NR. Tetapi berbanding terbalik hasilnya untuk ENR-46 dan CR-ENR-46. Pengujian Ketahanan terhadap pelarut minyak semakin banyak penambahan ENR-46 Ketahanan kompon termoplastik terhadap pelarut akan meningkat, hasil yang sama juga pada CR-ENR-46. Tetapi berbanding terbalik hasilnya dengan penambahan NR dan CR-NR pada kompon termoplastik.

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Investigating hollow corundum microspheres exfoliation of the elastomeric matrix

Voprosy Materialovedeniya ◽

10.22349/1994-6716-2018-94-2-135-142 ◽

2019 ◽

pp. 135-142

Author(s):

N. V. Shadrinov ◽

U. V. Evseeva

Keyword(s):

Mechanical Properties ◽

Atomic Force Microscope ◽

Butadiene Rubber ◽

Nitrile Butadiene Rubber ◽

Elastomeric Matrix ◽

Atomic Force

The results of study of the influence of hollow corundum microspheres HCM-S (5–100 µm) and HCM-L (70–180 µm) on the properties of nitrile butadiene rubber BNKS-18 are presented. The dependence of elastomer resistance to abrasion impact and physic and mechanical properties on the dispersion and concentration of hollow corundum microspheres is shown. The process of hollow corundum microspheres exfoliation of the elastomeric matrix, which largely determines the change of physic and mechanical properties, has been studied by specially developed stretching device compatible with an atomic force microscope. The paper describes microspheres exfoliation which is conventionally divided into 3 stages.

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Influence of Treated Distillate Aromatic Extract (TDAE) Content and Addition Time on Rubber-Filler Interactions in Silica Filled SBR/BR Blends

Polymers ◽

10.3390/polym13050698 ◽

2021 ◽

Vol 13 (5) ◽

pp. 698

Author(s):

Selin Sökmen ◽

Katja Oßwald ◽

Katrin Reincke ◽

Sybill Ilisch

Keyword(s):

Mechanical Properties ◽

Oil Content ◽

Tensile Modulus ◽

Mechanical Analysis ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Binary Blends ◽

Rubber Layer ◽

Processing Aids ◽

Rubber Filler

High compatibility and good rubber–filler interactions are required in order to obtain high quality products. Rubber–filler and filler–filler interactions can be influenced by various material factors, such as the presence of processing aids. Although different processing aids, especially the plasticizers, and their effects on compatibility have been investigated in the literature, their influence on rubber–filler interactions in highly active filler reinforced mixtures is not explicit and has not been investigated in depth. For this purpose, the influence of treated distillate aromatic extract (TDAE) oil content and its addition time on interactions between silica and rubber chains were investigated in this study. Rubber–filler and filler–filler interactions of uncured and cured silica-filled SBR/BR blends were characterized by using rubber layer L concept and dynamic mechanical analysis, whereas mechanical properties were studied by tensile test and Shore A hardness. Five parts per hundred rubber (phr) TDAE addition at 0, 1.5, and 3 min of mixing were characterized to investigate the influence of TDAE addition time on rubber–filler interactions. It was observed that addition time of TDAE can influence the development of bounded rubber structure and the interfacial interactions, especially at short time of mixing, less than 5 min. Oil addition with silica at 1.5 min of mixing resulted in fast rubber layer development and a small reduction in storage shear modulus of uncured blends. The influence of oil content on rubber–filler and filler–filler interactions were investigated for the binary blends without oil, with 5 and 20 phr TDAE content. The addition of 5 phr oil resulted in a slight increase in rubber layer and 0.05 MPa reduction in Payne effect of uncured blends. The storage tensile modulus of vulcanizates at small strains decreased from 13.97 to 8.28 MPa after oil addition. Twenty parts per hundred rubber (phr) oil addition to binary blends caused rubber layer L to decrease from 0.45 to 0.42. The storage tensile modulus of the vulcanizates and its reduction with higher amplitudes were incontrovertibly high among the vulcanizates with lower oil content, which were 13.57 and 4.49 MPa, respectively. When any consequential change in mechanical properties of styrene–butadiene rubber (SBR)/butadiene rubber (BR) blends could not be observed at different TDAE addition time, increasing amount of oil in blends enhanced elongation at break, and decreased Shore A hardness and tensile strength.

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