Preparation and properties of modified porous starch/carbon black/natural rubber composites

Du, Xueyu; Zhang, Yucang; Pan, Xuemei; Meng, Fanning; You, Jichun; Wang, Zhifen

doi:10.1016/j.compositesb.2018.08.033

Cited by 54 publications

(23 citation statements)

References 36 publications

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“…The calculated result of nanocomposites was 16 nm, which was very close to the pore size result of G2 PAMAM-H. We believed that the reason for the difference was that part of the pore size of G2 PAMAM-H was covered by CIIR molecular chains. This also proved that our proposed G2 PAMAM-Hcan serve as a physical crosslinking point in the CIIR system [ 40 , 41 ]. The cavity structure of G2 PAMAM-H can be filled, which demonstrated the good compatibility of G2 PAMAM-H in CIIR.…”

Section: Resultssupporting

confidence: 72%

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Wang

et al. 2021

Science and Technology of Advanced Materials

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Based on its excellent damping properties, traditional rubber has been widely used in various industries, including aerospace, rail transit and automotive. However, the disadvantages of effective damping area, unstable damping performance, easy fatigue, and aging, greatly limited the further application of rubber materials. Thus, it is important to develop novel modified rubber damping materials. Herein, polyamidoamine dendrimers with terminal-modified phenolic hydroxyl and amine groups (G2 PAMAM-H) were designed and used as modifiers to improve the damping performance of chlorinated butyl rubber (CIIR). The results showed that the modification of G2 PAMAM by diphenolic acid can avoid its aggregation in the CIIR matrix. CIIR/G2 PAMAM-H nanocomposites exhibited high tan δ max of 1.52 and wide damping temperature region of 140°C (tan δ > 0.55)at a very low loading (4.32 wt.%), which were strongerthan that of pure CIIR and CIIR/G2 PAMAM nanocomposites. In addition, these nanocomposites also exhibited a unique self-healing ability by multiple hydrogen bonds, which can effectively extend the life of the rubber material in actual production. Therefore, the dendrimer modification provided unique development opportunities for elastomers in certain highly engineered fields, such as vehicles, rail transit, aerospace, etc.

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Section: Resultssupporting

confidence: 72%

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Wang

et al. 2021

Science and Technology of Advanced Materials

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“…during the storage is helpful for further understanding the mechanism of the Mullins effect. According to formula (3) and formula (4), the values of 1 and 2 of the NR/CB and NR/GCB samples were calculated and shown in Figures 5(a) and 5(b). It can be seen from the figure that when no filler was added, the value of 2 of the virgin NR vulcanizate was bigger than that of 1 .…”

Section: Effect Of Storage On Mullins Effect Recovery Of Nr/cb and Nrmentioning

confidence: 99%

“…In general, the physical and mechanical properties of the pure rubber are not very good, so the rubber materials need to be reinforced in order to improve their comprehensive performance. Carbon black is the main reinforcement agent in the rubber industry [2][3][4]. Since CB is a polar material and NR is a nonpolar material, the polarity difference between CB and NR is obvious, so the dispersion of CB in the NR matrix is difficult when the amount of CB is large, thereby causing the decrease of the physical and mechanical properties of NR.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Mullins Effect in Natural Rubber Reinforced by Grafted Carbon Black

Wang

Huang

et al. 2019

Advances in Polymer Technology

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The obvious polarity difference between the carbon black (CB) and the natural rubber (NR) causes the CB hard to be dispersed in the NR matrix when the addition amount is large. In this paper, polyethylene glycol (PEG) was grafted onto the surface of CB by the liquid phase. The grafted carbon black (GCB) was prepared and applied to reinforce NR. The main physical and mechanical properties of NR were improved because of the better compatibility between GCB and NR. The Mullins effect of the vulcanizate was calculated by the cyclic stress-strain experiment. The results showed that the Mullins effect both existed in the virgin NR system and filled NR system. The degree of Mullins effect was increased with the increase of the filler addition, but that was different for CB and GCB. When the filler addition was below 20 phr, the Mullins effect of NR/GCB was stronger than that of NR/CB. However, when the filler addition was over 30 phr, the Mullins effect of NR/CB was stronger than that of NR/GCB. The Mullins effect was affected by the heat treatment temperature and time. The mechanisms of the Mullins effect were analyzed.

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“…Carbon black (CB) is a petrochemical material obtained by incomplete combustion of heavy petroleum products, and it is the main filler for the tire industry. [27][28][29] Every year, millions of tons of tires are collected for recycling and most of them are released to nature. In addition to the environmental pollution these tires cause, there is also fire hazards.…”

Section: Introductionmentioning

confidence: 99%

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Ari

Sunol

et al. 2019

Int J Energy Res

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Summary Carbon black (CB) obtained from used car tire rubbers were treated with concentrated sulfuric and nitric acids. The oxidized CB (CB‐COO‐Na+) is subsequently modified with epichlorohydrin (ECH) and amines including polyethylene imine (PEI). These modified CBs such as CB‐PEI are used as metal‐free catalysts in methanolysis of sodium borohydride (NaBH4) to produce hydrogen. The hydrogen generation rate (HGR) of 3089 ± 44.69 mL.min‐1.g‐1 is accomplished at room temperature with CB‐PEI‐hydrochloric acid (HCl) catalyst. The resulting activation energy of 34.7 kJ/mol for the temperature range of −20°C to +30°C compares favorably to most of alternative catalysts reported in literature while reaction catalyzing capabilities of CB‐PEI‐HCl particles extend to the subzero temperature range (−20°C‐0°C). The reuse and regeneration studies conducted for the CB‐PEI‐HCl catalyst showed that these catalysts do provide complete conversion at every use up to five consecutive runs and retain 50 ± 2.5% of the original hydrogen generation rate at the fifth consecutive reuse. The CBs‐based catalysts are fully regenerated with HCl treatment.

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Preparation and properties of modified porous starch/carbon black/natural rubber composites

Cited by 54 publications

References 36 publications

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Mechanical Properties and Mullins Effect in Natural Rubber Reinforced by Grafted Carbon Black

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

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Preparation and properties of modified porous starch/carbon black/natural rubber composites

Cited by 54 publications

References 36 publications

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Diphenolic acid-modified PAMAM/chlorinated butyl rubber nanocomposites with superior mechanical, damping, and self-healing properties

Mechanical Properties and Mullins Effect in Natural Rubber Reinforced by Grafted Carbon Black

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H 2 release studies from sodium borohydride methanolysis

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Product

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Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis