Enhanced Toughness and Mechanical Property of Epoxy Resins with Good Shape Memory Behaviors

Tang, Longhao; Wang, Yanling; Zhou, Tianfei; Li, Qiang

doi:10.1007/s12221-020-9684-3

Cited by 15 publications

(18 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 2b displays the storage modulus and Tan δ of various formulations of epoxy SMPs as the function of temperature. The results of previously studied TMP pure have been added for comparison purpose 25 . The storage modulus of all the composites is above 1 GPa at room temperature, and modulus curves rapidly drops below 10 MPa when these samples transformed to rubbery state as the temperature rise to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

Effects of networks composed of epoxy/dual thiol‐curing agents on properties of shape memory polymers

Wang

Tang

2021

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Profound understanding of relationships between molecular networks with properties can make it more convenient for people to prepare and employ shape memory polymers (SMPs). In this paper, a series of epoxy SMPs were developed based on epoxy (E‐51), trimethylolpropane tris(3‐mercaptopropionate) and pentaerythritoltetrakis (3‐mercaptopropionate), and 2‐methylimidazole, through “epoxy‐thiol” click reaction. The effect of networks on key properties (heat resistance and mechanical properties shape recovery performance) was systematically investigated. Experiment results indicated that there were positive correlations between network regularity with both thermal–mechanical properties and heat resistance. In addition, regularity of network structure had an effect to restrict shape recovery speed.

show abstract

Section: Resultsmentioning

confidence: 99%

Effects of networks composed of epoxy/dual thiol‐curing agents on properties of shape memory polymers

Wang

Tang

2021

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Not surprisingly, the sample with the higher cross-linker Bcc content possesses a higher E ′ -value. According to the E ′ value at T g + 30 • C (Tang et al, 2020), the crosslinking density can be calculated in Supplementary Equation 1and shown in Supplementary Table 2.…”

Section: Resultsmentioning

confidence: 99%

A Degradable and Self-Healable Vitrimer Based on Non-isocyanate Polyurethane

Jin

Wang

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

Developing degradable and self-healable elastomers composed of reusable resources is of great value but is rarely reported because of the undegradable molecular chains. Herein, we report a class of degradable and self-healable vitrimers based on non-isocyanate polyurethane elastomer. Such vitrimers are fabricated by copolymerizing bis(6-membered cyclic carbonate) and amino-terminated liquid nitrile rubber. The networks topologies can rearrange by transcarbonation exchange reactions between hydroxyl and carbonate groups at elevated temperatures; as such, vitrimers after reprocessing can recover 82.9-95.6% of initial tensile strength and 59-131% of initial storage modulus. Interestingly, the networks can be hydrolyzed and decarbonated in the strong acid solution to recover 75% of the pure di(trimethylolpropane) monomer. Additionally, the elastomer exhibits excellent self-healing efficiency (∼88%) and fracture strain (∼1,200%) by tuning the monomer feeding ratio. Therefore, this work provides a novel strategy to fabricate the sustainable elastomers with minimum environmental impact.

show abstract

“…To improve the toughness and mechanical properties of shape-memory epoxy polymers, Tang et al [ 33 ] combined epoxy resins with thiols and N and N-diglycidyl-4-glycidoxyaniline (TGE) to establish cross-linked structures ( Figure 1 G) to obtain epoxy SMPs with sufficient mechanical strength and adequate toughness. The tensile strength increased from 32.54% to 48.36% with the increase of TGE content in the experiment.…”

Section: Intelligent Polymer Shape-memory Polymermentioning

confidence: 99%

“…( F ) Shape-memory epoxy foam expansion rate versus the temperature of different hollow glass bead dosage (curing agent dosage is 17%) [ 31 ]. ( G ) Cross-linking structure diagram [ 33 ]. ( H ) Synthesis of shape-memory epoxy foam [ 35 ].…”

Section: Intelligent Polymer Shape-memory Polymermentioning

confidence: 99%

Research Progress of Intelligent Polymer Plugging Materials

et al. 2023

View full text Add to dashboard Cite

Intelligent polymers have become the focus of attention worldwide. Intelligent polymer materials through organic synthesis methods are used to make inanimate organic materials become “feeling” and “sentient”. Intelligent polymer materials have been applied in actual engineering production, and they are becoming a new research topic for scientists in various fields and countries, especially in the areas of drilling and plugging. The development of intelligent polymer materials can provide new solutions and technical means for drilling and plugging. Unlike traditional plugging materials, intelligent polymer plugging materials can cope with environmental changes. They have the characteristics of a strong target, good plugging effect, and no damage to the reservoir. However, there are currently no reviews on intelligent polymer plugging materials in the drilling field, so this paper fills that gap by reviewing the research progress of intelligent polymer plugging materials. In addition, this paper describes the mechanism and application status of intelligent polymer shape-memory polymers, intelligent polymer gels, intelligent polymer membranes, and intelligent polymer bionic materials in drilling and plugging. It is also pointed out that some intelligent polymer plugging materials still have problems, such as insufficient toughness and a poor resistance to salt and high temperature. At the same time, some suggestions for future research directions are also presented for reference.

show abstract

Enhanced Toughness and Mechanical Property of Epoxy Resins with Good Shape Memory Behaviors

Cited by 15 publications

References 27 publications

Effects of networks composed of epoxy/dual thiol‐curing agents on properties of shape memory polymers

Effects of networks composed of epoxy/dual thiol‐curing agents on properties of shape memory polymers

A Degradable and Self-Healable Vitrimer Based on Non-isocyanate Polyurethane

Research Progress of Intelligent Polymer Plugging Materials

Contact Info

Product

Resources

About