progress in shape memory epoxy resins

progress in shape memory epoxy resins

(PDF) Preparation and shape memory behavior of novel

Heat-resistance epoxy shape memory (SM) materials were prepared based on diglycidylether of bisphenol A (DGEBA) epoxy resin with the mixture of 4,4-diaminodiphenylether (DDM) and phthalide

(PDF) Preparation of Non-Planar-Ring Epoxy Thermosets

Keywords:epoxy resins, shape memory polymers, st ructure-property relationsh ips, non-planar ring, computa tional simulation. 1. Introduction. Shape memory polymers (SMPs) 1-4. A new method to improve the stability, tensile strength In this article, we design a new thermal curing method:twostage curing. The purpose of using this approach is to maintain the excellent shapememory property of epoxy resin system after first stage curing, and the material can be folded in small size to storage or transportation and recovery its original shape commodiously by heating temperature.

Analysis of Preparation and Properties on Shape Memory

In this study, a novel series of shape-memory epoxy resins are prepared using hydro-epoxy, hexahydrophthalic anhydride, and diglycidyl 4,5-epoxy tetrahydro phthalate (TDE-85) Durability Assessment of Styrene- and Epoxy-based Shape The present study is a baseline assessment of the durability of styrene- and epoxy-based shape memory polymer resin materials being considered for morphing applications when

Durability Assessment of Styrene- and Epoxy-based Shape

The present study is a baseline assessment of the durability of styrene- and epoxy-based shape memory polymer resin materials being considered for morphing applications when Enhanced Toughness and Mechanical Property of Epoxy Resins Jun 23, 2020 · Moreover, shape-memory test revealed that prepared epoxy SMPs are capable to fulfil the recovery process within 2 mins as long as temperature elevated to or above T g, with shape fixity ratio over 99 % and shape recovery ratio above 90 %.

Enhanced toughness and shape memory behaviors of

In the shape memory behavior tests, strain fixity ratio reached as high as 98.9% for toughened systems with 7, 9, 11, 13, and 15 wt.% of G. Toughened systems also displayed changed shape recovery behavior that was comparable with that of the neat epoxy resin system during shape memory process. Enhanced toughness and shape memory behaviors of In the shape memory behavior tests, strain fixity ratio reached as high as 98.9% for toughened systems with 7, 9, 11, 13, and 15 wt.% of G. Toughened systems also displayed changed shape recovery behavior that was comparable with that of the neat epoxy resin system during shape memory process.

Four-dimensional printing of a novel acrylate-based shape

Jun 05, 2019 · Until now, most of works have focused on the shape memory properties of several available photosensitive SMPs, and printable shape memory photosensitive resins for the vat photopolymerization are still lacking . Therefore, in this work, a new 4D printable acrylate-based photosensitive resin is designed and prepared for DLP. Preparation and shape memory behavior of novel heat Jan 01, 2020 · Heat-resistance epoxy shape memory (SM) materials were prepared based on diglycidylether of bisphenol A (DGEBA) epoxy resin with the mixture of 4,4-diaminodiphenylether (DDM) and phthalide-containing aromatic amine (PBMI-DDM), which was synthesized by Michael addition of 3,3-bis[4-(4-maleimido phenoxy)phenyl] -phthalide (PBMI) and DDM, in different molar ratios as curing

Preparation and shape memory properties of rigid-flexible

Sep 12, 2019 · Shape memory epoxy resins (SMEPs) as a typical polymer networks have drawn a great deal of applications due to their tunable shape memory properties [13,14]. Recently, the nano-sized chemical heterogeneity structures, which are related to the internal polymerization reaction [ 15 ], have been investigated by the epoxy/phenolic systems via AFM Preparation of epoxy-based shape memory polymers for To develop epoxy-based shape memory polymers (ESMPs) with a high switching temperature and good mechanical and shape memory properties for deployable space structures, the crosslink density and chain flexibility of the conventional epoxy resin, diglycidyl ether of bisphenol-A, were controlled by adding a flexible epoxy resin, diglycidyl ether of ethoxylated bisphenol-A with six oxyethylene

Preparation of epoxy-based shape memory polymers for

To develop epoxy-based shape memory polymers (ESMPs) with a high switching temperature and good mechanical and shape memory properties for deployable space structures, the crosslink density and chain flexibility of the conventional epoxy resin, diglycidyl ether of bisphenol-A, were controlled by adding a flexible epoxy resin, diglycidyl ether of ethoxylated bisphenol-A with six oxyethylene Progress in shape memory epoxy resins Request PDFThis review analyses the progress in the field of shape memory epoxy resins (SMEPs). Partial crystallisation and vitrification are the basis of shape memory effect in SMEPs. Several synthetic

Recent advances in shape memory epoxy resins and

The shape memory hydrogenated epoxy resin (SM-HEP) is prepared using hydrogenated bisphenol A epoxy resin (AL-3040), polypropylene glycol diglycidylether diacrylate (JH-230), and isophorone Recent advances in shape memory epoxy resins and The shape memory hydrogenated epoxy resin (SM-HEP) is prepared using hydrogenated bisphenol A epoxy resin (AL-3040), polypropylene glycol diglycidylether diacrylate (JH-230), and isophorone

Recovery stress enhancement in shape memory composites

Santhosh Kumar, KS, Biju, R, Reghunadhan, N (2013) Progress in shape memory epoxy resins. Reactive & Functional Polymers 73(2):421 430 . Google Scholar Crossref Reprocessable and Shape Memory Thermosetting Epoxy Resins May 28, 2019 · A novel epoxy thermoset is synthesized with dynamic Si O Si bonds. The thermosetting epoxy resins possess excellent reprocessing, reshaping, and shape memory ability due to the special molecular structure. The material exhibits high tensile strength and a fast stress relaxation process.

Reprocessable and Shape Memory Thermosetting Epoxy Resins

May 28, 2019 · A novel epoxy thermoset is synthesized with dynamic Si O Si bonds. The thermosetting epoxy resins possess excellent reprocessing, reshaping, and shape memory ability due to the special molecular structure. The material exhibits high tensile strength and a fast stress relaxation process. Research progress on biobased thermosetting resins - Ma Sep 15, 2015 · Wu Wang, Renhao Shen, Haitao Cui, Zhibo Cui, Yuyan Liu, Two-stage reactive shape memory thiolepoxyacrylate system and application in 3D structure design, Advanced Composites and Hybrid Materials, 10.1007/s42114-020-00137-5, (2020).

Review of Progress in Shape Memory Epoxies and Their

Review of Progress in Shape Memory Epoxies and Their Composites József Karger-Kocsis 1,2,* ID and Sándor Kéki 3 ID 1 Department of Polymer Engineering, The preparation, properties and modelling of shape memory epoxy resins (SMEP), SMEP foams and composites have been surveyed in this exhaustive review article. The underlying Review of Progress in Shape Memory Epoxies and Their The preparation, properties and modelling of shape memory epoxy resins (SMEP), SMEP foams and composites have been surveyed in this exhaustive review article. The underlying mechanisms and

Review of Progress in Shape Memory Epoxies and Their

The preparation, properties and modelling of shape memory epoxy resins (SMEP), SMEP foams and composites have been surveyed in this exhaustive review article. The underlying mechanisms and characteristics of SM were introduced. Review of progress in shape memory epoxies and their T1 - Review of progress in shape memory epoxies and their composites. AU - Karger-Kocsis, József. AU - Kéki, Sándor. PY - 2017/12/29. Y1 - 2017/12/29. N2 - Shape memory polymer (SMP) is capable of memorizing one or more temporary shapes and recovering successively to the permanent shape upon various external stimuli.

Shape memory polymers from benzoxazine-modified epoxy

Jun 21, 2013 · Novel shape memory polymers (SMPs) were prepared from benzoxazine-modified epoxy resin. Specimens consisting of aromatic epoxy (E), aliphatic epoxy (N), Jeffamine D230 (D) and BA-a benzoxazine monomer (B) were evaluated. The mole ratio of D/B was used as a mixed curing agent for an epoxy system with a fixed E/N. Sustainable epoxy resins derived from plant oils with May 23, 2018 · As shown in Fig. 4, stress- and temperature-programmed DMA was used to quantitatively analyze the shape memory properties of epoxy resins. The epoxy resin with 0.6 wt% CNC was heated to 80 °C and deformed under constant stress (0.07 MPa). A strain of 42% was obtained within 5 min.

Synthesis and Properties of a BioBased Epoxy Resin with

Oct 17, 2013 · Chao Li, Jinyue Dai, Xiaoqing Liu, Yanhua Jiang, Songqi Ma, Jin Zhu, Green Synthesis of a BioBased Epoxy Curing Agent from Isosorbide in Aqueous Condition and Shape Memory Properties Investigation of the Cured Resin, Macromolecular Chemistry and Physics, 10.1002/macp.201600055, 217, 13, (1439-1447), (2016). Synthesis and Properties of a BioBased Epoxy Resin with Oct 17, 2013 · Chao Li, Jinyue Dai, Xiaoqing Liu, Yanhua Jiang, Songqi Ma, Jin Zhu, Green Synthesis of a BioBased Epoxy Curing Agent from Isosorbide in Aqueous Condition and Shape Memory Properties Investigation of the Cured Resin, Macromolecular Chemistry and Physics, 10.1002/macp.201600055, 217, 13, (1439-1447), (2016).

Temperature-Induced Shape Memory Characteristics of Epoxy

Shape memory characteristics of woven glass and carbon fiber fabric reinforced epoxy resin-based composites were assessed in bending mode using a dynamic mechanical analyzer. The reinforcement strongly improved the recovery stress but impaired the bending deformability. Composites with asymmetric fabric lay-up showed better performance when the reinforced section experienced local The effects of crosslink density on thermo-mechanical If the crosslink density is too low, the shape fixity ratio of shape-memory hydro-epoxy resin would not reach 100%. Send article to Kindle To send this article to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices

Thermoset shape memory polymers and their composites

Feb 28, 2016 · Santhosh Kumar, KS, Biju, R, Reghunadhan Nair, CP (2013) Progress in shape memory epoxy resins. (2014) A new method to improve the stability, tensile strength, and heat resistant properties of shape-memory epoxy resins:two-stages curing. Journal of Applied Polymer Science 131:39882. Google Scholar Thermoset shape memory polymers and their composites Jul 28, 2020 · The preparation, properties and modelling of shape memory epoxy resins (SMEP), SMEP foams and composites have been surveyed in this exhaustive review article. Recent progress in shape memory

Viscoelastic behavior of epoxy resin reinforced with shape

The effect of NiTi alloy long wires on the viscoelastic behavior of epoxy resin was investigated by utilizing the dynamic mechanical analysis (DMA) and a novel micromechanical model. The present mo Viscoelastic behavior of epoxy resin reinforced with shape The effect of NiTi alloy long wires on the viscoelastic behavior of epoxy resin was investigated by utilizing the dynamic mechanical analysis (DMA) and a novel micromechanical model. The present mo

Progress in shape memory epoxy resins - ScienceDirect

Feb 01, 2013 · Progress in shape memory epoxy resins 1. Introduction. Polymers with diverse smart properties evince a lot of interest of researchers across the globe due 2. Advances in shape memory epoxy resins (SMEPs). As was stated above, shape memory epoxy resins (SMEPs) merit a

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