Article
Biochemistry & Molecular Biology
Pengzhan Liu, Tianshun Yuan, Jin Peng, Wenjun Zou, Furen Xiao
Summary: A scheme for manufacturing heavy-duty rail grinding wheels with silicone-modified phenolic resin (SMPR) as a binder is proposed. The use of methyl-trimethoxy-silane (MTMS) as an organosilicon modifier improves the heat resistance and mechanical performance of rail grinding wheels. The synthesized SMPR exhibits enhanced thermal stability, bending strength, and impact strength, making it suitable for rail grinding applications.
Article
Materials Science, Composites
Haochen Tian, Jie Fei, Chang Li, Lehua Qi, Xiaohang Cai, Bo Li, Yewei Fu
Summary: The addition of polyimide resin in paper-based friction materials can improve the tensile and shear strength, enhance the heat resistance, and reduce the wear rate. This study suggests that polyimide resin has the potential to replace phenolic resin in high-speed and heavy-load conditions.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Analytical
Zonghe Yang, Ben Liu, Hongchao Zhao, Junfen Li, Xiaohui Guo, Dongqing Zhang, Zhanjun Liu
Summary: The composite binder consisting of coal tar pitch and phenolic resin has great potential in the preparation of advanced carbon materials due to its low viscosity and high char yield. However, the optimization of the preparation process is hindered by the lack of understanding of its synergistic behavior and mechanism. This study systematically investigated the co-pyrolysis of the composite binder and clarified its interaction and structure evolution mechanisms.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Nanoscience & Nanotechnology
Yi He, Ran Duan, Qingqing Zhang, Tao Xia, Bo Yan, Shaofeng Zhou, Jin Huang
Summary: Constructing self-assembled hybrid particles of graphite oxide and zirconia nanoparticles significantly reinforced the properties of phenolic resin, improving bending strength, impact resistance, residual carbon rate, and friction and wear performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Polymer Science
Umesh K. Dwivedi, Shikha Singh, Satish Chandra Shukla, S. A. R. Hashmi
Summary: This study focused on preparing and characterizing Calotropis gigantea (CG) fiber reinforced CNT modified phenolic resin composites. The addition of MWCNT was found to enhance the PV limit and decrease the friction coefficient of the composites, with wear rate and contact temperature dependent on the MWCNT content. SEM analysis of worn surfaces helped understand the wear mechanism involved.
Article
Thermodynamics
Zheng Gong, Huanfang Wang, Zongyi Deng, Shuwen Chen, Chao Zhang
Summary: The pyrolysis and oxidation processes of a phenolic resin modified with boron carbide-containing talc were studied, and a precise kinetic model was established. Non-isothermal pyrolysis experiments were conducted on the modified resin, and the results showed that weight change was primarily caused by volatilization of small molecules, pyrolysis of the boron-phenolic resin, and oxidation of the inorganic fillers. The extended kinetic deconvolution method was developed for the complex pyrolysis and oxidation, and the goodness of fit of the thermogravimetric curve was found to be greater than 0.98.
THERMOCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Alexander Ruetjes, Lukas Stahl, Michael Mueller, Frank Petzoldt
Summary: Binder jetting has the potential to revolutionize conventional production processes, but faces challenges in depowdering and cleaning. A novel approach of splitting components and using sinter bonding reduces manual cleaning and preparation time. The study investigates parameters that affect joint strength and contact surface between parts.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Xinfeng Kan, Dengcui Yang, Zhengzhi Zhao, Jiquan Sun
Summary: This paper utilizes Fused Filament Fabrication (FFF) technology to create metal parts, achieving a relative density of 96% with optimized binder formula after sintering.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Liuyang Duan, Lei Luo, Yiguang Wang
Summary: A ceramizable resin matrix composite with modifying fillers of borosilicate glass, Si, and ZrSi2 designed based on carbon fiber/phenolic resin composite was studied for its oxidation and ablation behavior. The results showed that the strength of the composite after oxidation at 1200-1500°C for 1800 s was approximately 100 MPa. The ablation resistance and thermal insulation of the composite were improved simultaneously due to the synergistic effect among the fillers.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Mechanics
W. Zurowski, J. Zepchlo, A. Krzyzak, E. Gevorkyan, M. Rucki
Summary: This paper investigates the impact of quartz additions on the durability of a polymer composite. The study finds that the wear resistance of the composite increases when it contains 1% quartz powder. Similarly, the best results for shear strength and proof resilience are achieved with 1% quartz addition. However, further increase in quartz content decreases wear resistance. Additionally, all other properties worsen after the addition of quartz powder in any proportion compared to the composite without quartz.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Ji-Won Oh, Jinsu Park, Sahn Nahm, Hanshin Choi
Summary: Silicon carbide (SiC) is advantageous for engineering parts due to its high hardness and superior thermal stability, but it is difficult to manufacture complex products with full density. The use of reaction-bonded SiC and SiC-Silicon (Si) composite materials through molten Si infiltration has shown promise in addressing this challenge.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Shaofeng Zhou, Feifei Wang, Shuzhan Wang, De Fang, Jin Huang, Guizhe Zhao, Yaqing Liu
Summary: Cu/RGO nanohybrid prepared by a facile in situ reduction method can enhance the tribological, mechanical, and thermal properties of phenolic resin nanocomposites, showing good dispersion and synergistic friction-reducing and wear-resisting performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Physical
Beibei Wang, Qiangang Fu, Hejun Li, Lehua Qi, Yue Liu
Summary: By grafting graphite nanoplatelets on the carbon fibers surface using a chemical method, the mechanical strength and wear resistance of the composite materials were significantly improved, mainly attributed to the uniform distribution and multiscale structure of GNPs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Polymer Science
Yonggang Guo, Chenyang Fang, Tingmei Wang, Qihua Wang, Fuzhi Song, Chao Wang
Summary: This study aimed to modify cotton fabric-reinforced phenolic resin (CPF) composites by adding four two-dimensional fillers and investigate their tribological properties under dry friction and water lubrication conditions. The results showed that the CPF/Gr composite exhibited the best tribological performance under dry friction, with a 24% reduction in friction coefficient and a 78% reduction in wear rate. Under water lubrication conditions, all four fillers, except excessive graphite, were able to reduce the wear rate.
Article
Chemistry, Physical
Jong-Hwan Ko, Sang-Hye Lee, Jae-Seung Roh
Summary: The purpose of this study is to improve the oxidation resistance of graphite blocks at high temperatures by introducing a curing process of phenolic resin as a binder. The curing temperature was set at 150 degrees Celsius to achieve the highest cross-linking effect. Cured graphite blocks exhibited enhanced mechanical and electrical properties, along with inhibited formation of large pores. Therefore, the cured graphite blocks showed better oxidation resistance due to the reduction in active sites caused by the pyrolysis of the phenolic resin binder.
