scholarly journals High Silica Content Graphene/Natural Rubber Composites Prepared by a Wet Compounding and Latex Mixing Process

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2549
Author(s):  
Jian Wang ◽  
Kaiye Zhang ◽  
Guoxia Fei ◽  
Martina Salzano de Luna ◽  
Marino Lavorgna ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Mechanical Test ◽  
Rolling Resistance ◽  
Silica Content ◽  
Mixing Process ◽  
Rubber Composites ◽  
Mechanical Mixing ◽  
Natural Rubber Composites ◽  
Rubber Composite ◽  
Tan Δ

The reduced graphene oxide (rGO) modified natural rubber composite (NR) filled with high contents of silica was prepared by a wet compounding and latex mixing process using a novel interface modifier cystamine dihydrochloride (CDHC) with coagulation ability. CDHC acts as a coagulation agent through electrostatic interaction with rGO, SiO2, and latex rubber particles during the latex-based preparation process, while in the obtained silica/graphene/natural rubber composites, CDHC acts as an interface modifier. Compared with the composites prepared by the conventional mechanical mixing method, the dispersion of both rGO and SiO2 in the composites made by a wet compounding and latex mixing process is improved. As a result, the obtained silica/graphene/natural rubber composite prepared by this new method has good comprehensive properties. A Dynamic Mechanical Test suggests that the tan δ values of the composites at 60 °C decrease, indicating a low rolling resistance with increasing the graphene content at a low strain, but it increases at a higher strain. This unique feature for this material provides an advantage in the rubber tire application.

Graphene/carbon black/natural rubber composites prepared by a wet compounding and latex mixing process

2018 ◽  
Vol 47 (9) ◽  
pp. 398-412 ◽  
Author(s):  
Jian Wang ◽  
Kaiye Zhang ◽  
Zhengang Cheng ◽  
Marino Lavorgna ◽  
Hesheng Xia
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Mixing Process ◽  
Rubber Composites ◽  
Natural Rubber Composites

Synthesis of Natural Composite of Natural Rubber Filling Chitosan Nanoparticles

2019 ◽  
Vol 821 ◽  
pp. 96-102 ◽  
Author(s):  
Thidarat Petchsoongsakul ◽  
Peerapan Dittanet ◽  
Surapich Loykulnant ◽  
Chaveewan Kongkaew ◽  
Paweena Prapainainar
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Chitosan Nanoparticles ◽  
Mechanical Analysis ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Chitosan Nanoparticle ◽  
Rubber Composite ◽  
Natural Composite

Mechanical properties of natural rubber composite were improved by adding chitosan nanoparticles in this work. The chitosan nanoparticles were prepared by ionotropic gelation method. The effect of chitosan nanoparticle content in natural rubber at 0, 3, 6 and 9 phr were studied. Size of the synthesized chitosan nanoparticles was 282 ± 96 nm. Natural rubber vulcanization was by electron irradiation at intensity 200 kGy. The morphology of composite was investigated by scanning electron microscopy (SEM). The mechanical properties (tensile strength and modulus) were determined by tensile testing. The interaction of filler-rubber was illustrated by Fourier transform-infrared (FTIR) and dynamic mechanical analysis (DMA). It was found that chitosan nanoparticles was well dispersed within natural rubber matrix. The optimum filler content was affected to mechanicals properties of natural rubber composites. The chitosan nanoparticles at 3 phr in natural rubber composites was found to have the highest mechanical properties. The dispersion and immobilization of chitosan nanoparticles at 3 phr was the best among all loading. In addition, 3 phr chitosan nanoparticles / natural rubber composite had filler-rubber higher interaction than those of other loading.

scholarly journals Combination of Self-Healing Butyl Rubber and Natural Rubber Composites for Improving the Stability

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 443
Author(s):  
Kunakorn Chumnum ◽  
Ekwipoo Kalkornsurapranee ◽  
Jobish Johns ◽  
Karnda Sengloyluan ◽  
Yeampon Nakaramontri
Keyword(s):  
Natural Rubber ◽  
Dynamic Mechanical Properties ◽  
Attenuated Total Reflection ◽  
Rubber Matrix ◽  
Self Healing ◽  
Mechanical And Electrical Properties ◽  
Natural Rubber Composites ◽  
Tan Δ ◽  
The Stability ◽  
Physical And Chemical

The self-healing composites were prepared from the combination of bromobutyl rubber (BIIR) and natural rubber (NR) blends filled with carbon nanotubes (CNT) and carbon black (CB). To reach the optimized self-healing propagation, the BIIR was modified with ionic liquid (IL) and butylimidazole (IM), and blended with NR using the ratios of 70:30 and 80:20 BIIR:NR. Physical and chemical modifications were confirmed from the mixing torque and attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR). It was found that the BIIR/NR-CNTCB with IL and IM effectively improved the cure properties with enhanced tensile properties relative to pure BIIR/NR blends. For the healed composites, BIIR/NR-CNTCB-IM exhibited superior mechanical and electrical properties due to the existing ionic linkages in rubber matrix. For the abrasion resistances, puncture stress and electrical recyclability were examined to know the possibility of inner liner applications and Taber abrasion with dynamic mechanical properties were elucidated for tire tread applications. Based on the obtained Tg and Tan δ values, the composites are proposed for tire applications in the future with a simplified preparation procedure.

CNT@NiO/natural rubber with excellent impedance matching and low interfacial thermal resistance toward flexible and heat-conducting microwave absorption applications

2021 ◽  
Author(s):  
Maofan Zhou ◽  
Gengping Wan ◽  
Pengpeng Mou ◽  
Shengjie Teng ◽  
Shiwei Lin ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Thermal Resistance ◽  
Microwave Absorption ◽  
Impedance Matching ◽  
Interfacial Thermal Resistance ◽  
Heat Conducting ◽  
Rubber Composites ◽  
Natural Rubber Composites

Herein, CNT@NiO/natural rubber composites were fabricated to apply as flexible and heat-conducting microwave absorption materials.

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