A5007720224- biodegradable polymer synthesis and properties
- Synthesis and properties of polymers
- Polymer Science and PVC
- Silicone and Siloxane Chemistry
- Polymer Nanocomposites and Properties
- Dielectric materials and actuators
- Polymer crystallization and properties
- Tribology and Wear Analysis
- Analytical Chemistry and Sensors
- Transition Metal Oxide Nanomaterials
- Chemistry and Chemical Engineering
- Electromagnetic wave absorption materials
- Entrepreneurship Studies and Influences
- Mechanical Engineering and Vibrations Research
- Additive Manufacturing and 3D Printing Technologies
- Orthopaedic implants and arthroplasty
- Dementia and Cognitive Impairment Research
- Frailty in Older Adults
- Gas Sensing Nanomaterials and Sensors
- Fiber-reinforced polymer composites
- Conducting polymers and applications
- Aging and Gerontology Research
- Carbon dioxide utilization in catalysis
- Thermal properties of materials
- Natural Fiber Reinforced Composites
Shenyang University of Technology
2022-2025
Xinxiang Medical University
2024
Tsinghua University
2024
Guangdong University of Technology
2023
The design of high-performance polyimide (PI) films and understanding the relationship structure–dielectric property are great significance in field microelectronics industry, but challenging. Herein, we describe first work to construct a series novel tert-butyl PI (denoted as PI-1, PI-2, PI-3, PI-4) based on low-temperature polymerization strategy, which employed tetracarboxylic dianhydride (pyromellitic anhydride, 3,3′,4,4′-biphenyl 4,4′-diphenyl ether dianhydride, 3,3′,4,4′-benzophenone...
Abstract Although polyimide films have a low dielectric constant, with the advent of 5G era, properties material are required to be further improved. Therein, we prepared controlled hollow mesoporous SiO 2 nanomicrospheres by hard template method make films. The composite membrane exhibits better thermal stability, mechanical properties, and hydrophobicity compared pure membrane. Hollow dispersed in can reduce inhomogeneity charge distribution between molecules interaction polar chemical...
Abstract Glass fiber (GF) reinforced nylon56 composites (nylon56/GF) were prepared by melting and blending through twin‐screw extruder with continuous feeding. The structure properties of the characterized electron density tester, polarizing microscope, scanning electro‐mechanical universal testing machine thermal analyzer. results showed that is less than 1.37 g/cm 3 . There strong interface adhesion between glass matrix in composite system, length system 0.47–0.61 mm. With increase content...
ABSTRACT Currently, mainstream phthalate plasticizers pose serious threats to the environment and human health. As an eco‐friendly harmless alternative, polyester have garnered widespread attention. However, their complex preparation process low plasticizing efficiency limited practical application. In this study, a series of copolyester (POMAZ), synthesized from azelaic acid, octanediol, various contents 2‐methyl‐1,3‐propanediol (MPO), were prepared via direct esterification. The is...
Bio-based PA56 is as matrix resin, maleic anhydride (MAH), and glycidyl methacrylate (GMA) dual monomer grafted POE (POE-g-MAH/GMA) polyphenyl ether(PPO) are simultaneous toughening agents. The PA56/POE-g-MAH-GMA/PPO ternary alloys containing 10 wt% POE-g-MAH-GMA with different PPO content prepared by the melt blending method through twin screw extruder. structure property of were studied. results showed that microscopic morphology each alloy an obvious “sea-island” structure. a continuous...
Design of high-performance polyimide (PI) films and understanding the relationship structure-dielectric property are great significance in field microelectronics industry, but is challenging. Herein, we describe first work to construct a series novel tert-butyl PI (denoted as PI-1, PI-2, PI-3, PI-4) based on low-temperature polymerization strategy, which employed tetracarboxylic dianhydride (pyromellitic anhydride, 3,3',4,4'-biphenyl 4,4'-diphenyl ether dianhydride, 3,3',4,4'-benzophenone...
Abstract Poly (butylene terephthalate) (PBT)/poly (ethylene glycol‐co‐cyclohexane‐1, 4‐dimethanolterephthalate) (PETG) blends were prepared by melt blending using a twin screw extruder. The non‐isothermal crystallization behaviors of PBT/PETG investigated differential scanning calorimetry (DSC). results showed that the peaks moved gradually toward lower temperature and crystallinity decreased with increase PETG content. all show double melting peaks, which low‐melting peak T m 1 becomes as...
A series of 2-methyl-1,3-propanediol (MPO) modified azelaic acid and hexylene glycol copolyester (PHMAZ) plasticizers with varying contents were synthesized using a direct esterification melt polycondensation method, their structures characterized systematically. Analysis infrared spectroscopy nuclear magnetic resonance confirmed the synthesis designed structure. Gel permeation chromatography (GPC) tests indicated that number average molecular weight each sample ranged between 2000 3000....
With the global population aging rapidly, understanding factors influencing health outcomes in older adults is crucial. This study explores longitudinal causal relationship between self-perceptions of and frailty examines whether subjective cognitive decline mediated associations. The Brief-Aging Perceptions Questionnaire(B-APQ), Frailty Phenotype Assessment Scale, Subjective Cognitive Decline Questionnaire were used to survey 619 community-dwelling Xinxiang, Henan, China, from March October...
Abstract The poly(butylene succinate) (PBS) copolyesters modified by 2‐methyl‐1,3‐propanediol (MPO), that is succinate‐co‐methyl propylene (PBMS), were synthesized direct esterification‐melt polycondensation method. 1 H NMR showed the PBMS molecules contain two repeating structural units, butylene succinate (BS) and 2‐methyl‐1,3‐propylene (MS). crystalline properties of characterized DSC, POM, XRD. results relative crystallinity decreases from 45.12% to 38.2%, size spherulites also...