Article
Materials Science, Multidisciplinary
Fengfan Hu, Xiujuan Fan, Feng Peng, Xingchen Yan, Jinbing Song, Chunming Deng, Min Liu, Dechang Zeng, Chengyun Ning
Summary: Titanium and hydroxyapatite powders were used to fabricate a Ti/Ti/HA composite coating on PEEK substrate via VPS, which showed a three-layer structure with varying roughness and porosity. The VPS coating did not affect the thermochemical properties of PEEK, and the average bond strength of the composite coating reached 32 MPa.
Review
Polymer Science
Tongtong Ma, Jiajia Zhang, Shuoyao Sun, Wenqing Meng, Yan Zhang, Junling Wu
Summary: Polyetheretherketone (PEEK) is a popular material for dental applications due to its excellent chemical stability, biocompatibility, and mechanical qualities. However, its surface inertness limits its osseointegration and bonding strength. This review focuses on recent progress in treatment strategies, including surface modification and blending modification, to enhance the bonding strength and bioactivity of PEEK materials. Despite challenges, modified PEEK shows promise for dental applications.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Mechanical
Cunao Feng, Yu Guo, Zhenyang Yu, Kai Chen, Dagang Wang, Xiaowei Li, Yong Luo, Qingliang Wang, Dekun Zhang
Summary: An anti-wear filler of SCF-MoS2 was synthesized by hydrothermal method and blended with nano-SiO2 to enhance the mechanical and tribological properties of PEEK composites. The addition of SCF-MoS2 increased the elastic modulus and tensile strength of the composites, while reducing the friction coefficient and wear rate. The composites also exhibited good tribological properties in a simulated coal mine environment.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yingjie Qin, Guangtao Ge, Jingxin Yun, Xiaoyong Tian, Xindong Liu, Jianping Han, Shitao Gao
Summary: In this study, a thermoplastic-based sizing treatment was introduced into CF/PEEK prepreg filament preparation to address the issues of defects in the material and printing process. The sizing treatment improved the tensile strength of CF composites, and when combined with the thermoplastic-based sizing treatment and prepreg filament approach, 3D printing showed potential for creating structural parts with favorable interfacial bonding.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Zhaogui Wang, Xiuzeng Yin, Lihan Wang
Summary: High-temperature-resistant thermoplastics, such as PEEK and PEI, are becoming popular materials for 3D printing. This paper introduces a method to fabricate high-performance thermoplastic sandwich structures, which improves the surface quality and tensile strength of the specimens. The method is cost-effective and provides complex parts and tooling.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Engineering, Manufacturing
Yuqing Guo, Hu Chen, Sukun Tian, Yongxiang Xu, Kenan Ma, Shuai Ma, Xiang Wang, Yicha Zhang, Yuchun Sun
Summary: This study investigated the effects of gas type and holding time on the physico-chemical properties of PEEK powders at optimal temperature. The results showed that the flowability, morphology, and crystallinity of the powders changed with holding time. The hardness of the powders remained stable when aged in argon, but decreased in nitrogen.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Dentistry, Oral Surgery & Medicine
Yanping Liu, Wei Bai, Xian Cheng, Jiehua Tian, Donghao Wei, Yuchun Sun, Ping Di
Summary: This in vitro study investigated the effects of printing layer thickness on the mechanical properties of 3D-printed custom trays. Results showed that moderate layer thickness provided the best properties for these trays.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Chemistry, Physical
Nan Zhou, Jin Jia, Shuyuan Zhao, Dongxing Zhang, Mingxiang Feng
Summary: The surface of carbon fibers is modified by a sizing agent composed of sulfonated polyether ether ketone (SPEEK) and carboxylated carbon nanotubes (MWCNTS), which improves the interfacial binding between carbon fibers and polyetheretherketone (PEEK) matrix. The flexural strength and interlaminar shear strength of the modified composites are significantly enhanced by 74.2% and 84.2% compared to CF/PEEK composites without sizing agent. Coating with SPEEK-MWCNTS is confirmed to be an essential approach to construct an excellent interface between the reinforcement phase and thermoplastic matrix.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Biomedical
Evaggelia Papia, Sara Anna Caroline Brodde, Jonas Peter Becktor
Summary: The study evaluated how different thicknesses of PEEK influence mechanical properties under flexure and tension, with 1.0 mm thick samples showing higher values in elastic limit and conventional deflection in flexural strength test. Tensile strength test did not show significant difference in elastic limit, but 1.0 mm thick PEEK received significantly higher maximum value at fracture.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Muhanad M. Hatamleh, Ayman M. Maqableh, Ahed Al-Wahadni, Mohammad A. Al-Rabab'ah
Summary: The purpose of this study was to examine the mechanical properties and bonding of maxillofacial silicone elastomer mixed with Zinc Oxide nanoparticles (ZnO-NP) and Chlorohexidine Diacetate Salt (CHX) at different concentrations. The results showed that the additives had a significant effect on the tensile strength, elongation percentage, tear strength, and shear bond strength. CHX at a concentration of 5% resulted in the highest shear bond strength.
Article
Multidisciplinary Sciences
Neil Limaye, Lorenzo Veschini, Trevor Coward
Summary: This study compares the mechanical properties of 3D-printed and milled PEEK materials and investigates post-production treatments to enhance the biocompatibility of 3D-printed PEEK. The results show that 3D-printed materials have lower mechanical properties, but sandblasting can improve surface defects and promote cell adhesion and distribution. This is significant for the integration of PEEK implants with host tissue.
Article
Chemistry, Physical
Nimisha Kakkad, Naveen S. Yadav, Puja Hazari, Shweta Narwani, Kirti Somkuwar, Sakeenabi Basha, Varsha Verma, Suraj Arora, Omir Aldowah, Artak Heboyan, Mohmed Isaqali Karobari
Summary: This in vitro research aimed to evaluate the Tensile Bond Strength of Poly Ether Ether Ketone and Zirconia copings using resin cement with or without Visio.link adhesive. The results showed that the addition of Visio.link adhesive significantly increased the Tensile Bond Strength of the samples. The Tensile Bond Strength of PEEK copings and Zirconia copings with Visio.link adhesive was considerably greater than those without adhesive.
Article
Engineering, Biomedical
Zhi Zheng, Pengjia Liu, Xingmin Zhang, Jingguo Xin, Yongjie Wang, Xiaosong Zou, Xiaohan Mei, Shuling Zhang, Shaokun Zhang
Summary: This article reviews the modification methods of PEEK in the last five years, including surface modification and composite material modification, in order to improve its biological activity and antibacterial properties. The researchers believe that these modification methods provide valuable guidance for the future design of PEEK orthopedic implants.
MATERIALS TODAY BIO
(2022)
Article
Construction & Building Technology
Amr Ashraf Soliman, William F. Heard, Brett A. Williams, Ravi Ranade
Summary: In recent studies, Ultra-high Performance Concretes (UHPC) have shown superior bond strength with steel reinforcement compared to conventional concrete. This study investigates the influence of tensile properties of UHPC on bond behavior, finding that higher tensile strength leads to improved average bond strength. However, tensile strain capacity does not significantly affect bond strength. The study also analyzes the effects of cover thickness and embedment length on bond strength, providing key insights into bond stress distribution through finite element analyses.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xiaoping Ji, Siqi Wang, Bingchen Yao, Wei Si, Chaohui Wang, Tongda Wu, Xueyuan Zhang
Summary: This study presents nano-SiO2 modified microcapsules prepared by in-situ polymerization to improve their performance. The optimal preparation parameters were determined, and the properties of the prepared microcapsules were evaluated. The results showed that the addition of nano-SiO2 can obviously improve the performance of microcapsules.
MATERIALS & DESIGN
(2023)
