Thermo-oxidative process leads to the structure damage of elastomers, such as the scission of main chains and destruction of crosslinks. The problem that damaged structure brings about the deterioration of mechanical properties has not been solved by the conventional anti-aging methods. Inspired by self-healing process, a structure recovery strategy for recovering the damaged structure induced by thermo-oxidative process is proposed, which endows elastomers with superior thermo-oxidative resistance. The high reactivity between 1,3-diisopropenylbenzene and free radicals realizes high recovery efficiency (from 83% to 118%); the changes in topology structure during recovery process make much more rubber chains bear external stress and improve mechanical properties significantly (from 18.5 to 29.6 MPa). This work paves the way for the development of elastomers with superior thermo-oxidative resistance, meanwhile this work is helpful to push the theoretical research of self-healing to practical application.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/marc.202000762 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Construction of an In Situ-Generated Nanoscale Organic-Inorganic Hybrid System Using Hydrogen Bonding Interaction To Assist Thermal Properties of Resins.
ACS Appl Mater Interfaces
December 2024
State Key Laboratory of Fine Chemicals and Department of Polymer Science and Engineering, Dalian University of Technology, Dalian 116024, China.
With the rapid development of science and technology, high-temperature-resistant resin systems are facing more severe challenges in extreme applications. To further improve the comprehensive thermal properties of phthalonitrile resins, an in situ generation of a high-temperature-resistant phthalonitrile resin achieving an organic-inorganic hybridization network is reported. A 3-aminophenol phthalonitrile containing -NH is used as a material to hybridize with prepared calcium phosphate nano-oligomers (CPOs), and the hybrid precursor is named as CAPN.
View Article and Find Full Text PDFInvestigation on the Performances of Esterified Waste Cooking Oil Rejuvenator and Recycled Asphalt.
Materials (Basel)
September 2024
Guangxi Beitou Transportation Maintenance Technology Group Co., Ltd., Nanning 530201, China.
Article Synopsis
- Waste cooking oil (WCO) recycled asphalt struggles with thermal oxidation stability and aging resistance, prompting researchers to use glycerol esterification as a pretreatment method.
- The study evaluated how different levels of esterification affect the performance of recycled asphalt in terms of high-temperature, low-temperature handling, fatigue properties, and resistance to aging.
- The results showed that glycerol esterification significantly improved the thermal stability and aging resistance of WCO recycled asphalt, increasing its thermal decomposition temperature by about 115 °C and reducing variations in physical properties during aging.
Exploring the Thermal-Oxidative Stability of Azithromycin Using a Thermoactivated Sensor Based on Cerium Molybdate and Multi-Walled Carbon Nanotubes.
Nanomaterials (Basel)
May 2024
Centro de Ciência e Tecnologia, Universidade Federal do Cariri, Av. Tenente Raimundo Rocha, 1639, Cidade Universitária, Juazeiro do Norte 63048-080, CE, Brazil.
The chemical stability of azithromycin (AZM) may be compromised depending on the imposed thermo-oxidative conditions. This report addresses evidence of this process under varying conditions of temperature (20-80 °C), exposure time to UV radiation (1-3 h irradiation at 257 nm), and air saturation (1-3 h saturation with atmospheric air at 1.2 L min and 15 kPa) through electrochemical measurements performed with a thermoactivated cerium molybdate (Ce(MoO))/multi-walled carbon nanotubes (MWCNT)-based composite electrode.
View Article and Find Full Text PDFThe Roles of Impurities and Surface Area on Thermal Stability and Oxidation Resistance of BN Nanoplatelets.
Nanomaterials (Basel)
March 2024
Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria.
This study considers the influence of purity and surface area on the thermal and oxidation properties of hexagonal boron nitride (h-BN) nanoplatelets, which represent crucial factors in high-temperature oxidizing environments. Three h-BN nanoplatelet-based materials, synthesized with different purity levels and surface areas (~3, ~56, and ~140 m/g), were compared, including a commercial BN reference. All materials were systematically analyzed by various characterization techniques, including gas pycnometry, scanning electron microscopy, X-ray diffraction, Fourier-transform infrared radiation, X-ray photoelectron spectroscopy, gas sorption analysis, and thermal gravimetric analysis coupled with differential scanning calorimetry.
View Article and Find Full Text PDFEffects of Modifying Agent and Conductive Hybrid Filler on Butyl Rubber Properties: Mechanical, Thermo-Mechanical, Dynamical and Re-Crosslinking Properties.
Polymers (Basel)
October 2023
Sustainable Polymer & Innovative Composite Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
Ionic crosslinking of bromobutyl rubber (BIIR) composites was prepared using butylimidazole (IM) and ionic liquid (IL), combined with carbon nanotubes (CNT) and conductive carbon black (CCB) to enhance the intrinsic properties and heal ability of the resulting composites. Variation in the BIIR/CNT-CCB/IM/IL ratios was investigated to determine the appropriate formulation for healing the composites. Results showed that the mechanical properties were increased until the IM:IL:CNT/CCB ratio reached 1:1:1/1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!