The Analysis of Geometrically Nonlinear Behavior of SMAs Using RKPM DOI
Yijie Zhang, Gaofeng Wei, Tengda Liu

et al.

Communications in Nonlinear Science and Numerical Simulation, Journal Year: 2024, Volume and Issue: unknown, P. 108581 - 108581

Published: Dec. 1, 2024

Language: Английский

Shape Memory Polymers With High Response Temperature and Application in Wellbore Stability DOI Open Access
Zhendong Liu, Tengfei Sun,

Gongrang Li

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

ABSTRACT This study focuses on the preparation and characterization of high glass transition temperature shape memory polymers (HTSMP) for leak plugging applications. The HTSMP was synthesized through a curing reaction characterized using FTIR spectroscopy, which confirmed occurrence ring‐opening resulting in formation hydroxyl groups. reached up to 136°C, it maintained modulus over 10 MPa at 200°C. Shape performance tests showed that samples exhibited recovery rate ranging from 80% 95%, with higher observed increased agent content. In sealing tests, addition HTSMP‐1 significantly improved effect conventional agents, pressure‐bearing capacity 9.28 elevated temperatures. These results demonstrate potential applications, particularly addressing fractured leakage high‐temperature deep wells.

Language: Английский

Citations

0
Remarkable enhancement of physical‐mechanical properties in unsaturated polyester resin composites using SiO2@CTBN hybrid particles DOI Creative Commons

Elham Rouhi,

Kiumars Bahrami, Mehdi Poorabdollah

et al.

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract To improve the toughness of unsaturated polyester resin (UPR), core‐shell particles with a silica core and carboxyl‐terminated butadiene acrylonitrile (CTBN) rubber shell were synthesized added to UPR at 2, 5, 10 wt%. Impact, tensile, bending, dynamic mechanical analysis (DMA) performed on pure composites containing (UPR/CSR). The impact indicated that addition 2 wt% CSR increased by 34% compared UPR. However, due low modulus rubbery shell, elastic moduli UPR/CSR composite decreased. enhance physical properties composite, hybrid gamma‐alumina (γ‐Al₂O₃) (as regulator reinforcer network) was manufactured, resulting in remarkable enhancements properties. Additionally, variations curing kinetics four heating rates investigated for more detailed examination changes structure network. Highlights Synthesis SiO @CTBN fabrication composite. Significant increase resin. Investigation network kinetic DSC.

Language: Английский

Citations

0
Development of epoxy resin-based two-way responsive actuator and its application in thermal stimulation soft robot DOI
Baoji Hu,

Mengran Li,

Shuai Sun

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136758 - 136758

Published: March 1, 2025

Language: Английский

Citations

0
A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites DOI Creative Commons

Xiang Hong,

Peng Wang, Yu Ma

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Abstract 3D‐printed polymer‐based composites are promising for various engineering applications due to high strength‐to‐weight ratios and design flexibility. However, conventional matrix materials, such as polylactic acid epoxy resin, often exhibit brittleness limited impact resistance (< 10 kJ m − 2 ). Herein, a universal strategy is reported enhancing the ductility energy absorption of by leveraging dynamic crosslinking B─O dative bonds. To validate its effectiveness, smart composite (PLA/SSG) comprising shear‐stiffening gel fillers embedded in designed rate‐dependent mechanical adjustability along with 3D printability evaluated. The resulting shows significant improvements resistance, ductility, strength‐ductility balance. Specifically, multiple crack localized plastic yielding induced enables PLA/SSG 40‐times increase ductility; “soft‐hard” phase transition bonds endows 330% improvement absorption. This bonds‐inspired provides approach printing impact‐resistant structures.

Language: Английский

Citations

0
Biomimetic Network and Microstructure for Multifunctional Recyclable Ramie Fiber-Reinforced Composites: High-Hydrophobic, Wave-Transparent, and Heat-Conducting DOI
Qibin Xu,

Shiyao Hua,

Shengchang Zhang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Ramie fiber yarn (PRF), characterized by its superior microwave transmittance (MWT), is a novel material that can effectively substitute traditional glass (D-GF) in the fabrication of composites for communication equipment shells. However, super hydrophilicity and inadequate thermal conductivity (λ) PRF hinder overall performance safety use. To date, no effective strategy has been developed to prepare multifunctional PRF-reinforced composites, including high hydrophobicity, MWT, λ. Herein, integrating template method with vacuum-assisted spraying technology, mosquito-eye-like honeycomb network was constructed on surface fabric. This network, composed nacre-like brick-and-mortar microstructures as fundamental units, achieves both mesoscopic microscopic order. The biomimetic microstructure enable fabric transition from superhydrophilic high-hydrophobic, significantly reducing water absorption levels similar D-GF-reinforced composites. Furthermore, structures are incorporated into composite interface via surface, resulting MWT λ values up 98% 1.0582 W/mK, respectively. Importantly, waste be fully transformed particles, thereby enabling closed-loop recycling reuse. offer an efficient versatile modification

Language: Английский

Citations

0
A bio-based dual-effect iron-derived supermolecule enabling fire-safe and mechanically reinforced epoxy DOI
Han Li, Zhi Li, Jiawei Du

et al.

Sustainable materials and technologies, Journal Year: 2024, Volume and Issue: unknown, P. e01196 - e01196

Published: Nov. 1, 2024

Language: Английский

Citations

3
Rapid self-assembly of lignin and dopamine to synthesis acid-base resistant superhydrophobic coating for oil-water separation DOI

Liyunlong Wang,

Zongwei Guo,

Guihua Yang

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 704, P. 135513 - 135513

Published: Oct. 5, 2024

Language: Английский

Citations

1
Rubber-assisted and modulated epoxy topological network for developing fatigue-resistant, high-strain-cycle high performance shape memory polymer composites DOI
Yiyuan Sun, Zenghui Yang, Liming Tao

et al.

Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 205, P. 106095 - 106095

Published: Nov. 7, 2024

Language: Английский

Citations

1
A multifunctional partially bio-based epoxy resin by renewable chitosan as reaction raw material: shape memory effect, bonding property, excellent degradability, and toughening performance DOI
Lili Zhang,

Tengyu Feng,

Haodong Chen

et al.

Polymer, Journal Year: 2024, Volume and Issue: unknown, P. 127851 - 127851

Published: Nov. 1, 2024

Language: Английский

Citations

1
A hybrid epoxy resin realized by facile glycidyl-grafting of highly-branched polyurethane toward heat-free structural bonding DOI
Saisai Zhang, Peixin Niu, Yifang Zhao

et al.

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 56, P. 105621 - 105621

Published: Dec. 11, 2024

Language: Английский

Citations

1