Influences of Mo Fibers on Mechanical Properties of Resin Mineral Composites
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https: //doi. org/10.1007/s11595-020-2315-4
Influences of Mo Fibers on Mechanical Properties of Resin Mineral Composites REN Xiuhua1, ZHANG Chao1*, HUANG Bo2, ZHANG Jianhua2, QIN Guangjiu1
(1. School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China; 2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education of China, School of Mechanical Engineering, Shandong University, Jinan 250061, China)
Abstract: The influences of new, scrap, and five modified Mo fibers on interface bonding strength of fiber-matrix and mechanical strength of RMC were studied. Typical specimens with different fibers and mass ratio of resin and hardener were prepared to verify the above assumptions. Theoretical analysis and experimental results prove that, compared with ordinary new Mo fibers, scrap Mo fibers can perform better in improving interface bonding strength and mechanical properties of RMC because many discharge pits randomly distribute on the surface of scrap fibers. For five modified Mo fibers, interface bonding strength and the reinforcing effect on RMC have been improved obviously. Wherein, comprehensive mechanical properties of RMC are optimal with the addition of M6 fibers which have undergone combined surface treatment including acidification, gasphase oxidation and coupling treatment. And interface bonding strength between M6 fiber and matrix is the maximum. Key words: composite; fiber; mechanical properties; interface bonding strength
1 Introduction As a new polymer-based multiphase material, resin mineral composite (RMC) is solidified by polyreaction[1,2], with natural granite as aggregate and organic resin as binder. For its better characteristics including good corrosion resistance, high impact toughness, superior vibration damping, low curing shrinkage and excellent forming ability, RMC is mainly applied in high-precision machine tools, laser, medical or electron equipments[3-5]. In addition, RMC can be precisely molded at room temperature instead of high sintering, with low cost, no rust, and less pollution in the process[6,7]. Consequently, RMC can better meet with the requirements of high speed, high precision, and good damping property, significantly improving machining quality and reducing vibration in the manufacturing
© Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2020 (Received: Sept. 29, 2019; Accepted: Nov. 18, 2019) REN Xiuhua(任秀华): Assoc.Prof.; Ph D; E-mail: 15866766690 @126.com *Corresponding author: ZHANG Chao(张超): Assoc.Prof.; Ph D; E-mail: [email protected] Fouded by the National Natural Science Foundation of China (No. 51175308) and the National Science and Technology Major Project of China (No. 2012ZX04010032)
process. However, compression and flexural strength of RMC are about 120 MPa and 30 MPa separately at present. The strength is far less than that of traditional materials such as gray cast iron and welded steel[8,9], thus restricting its application and popularization
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