Reactive particles from <i>in situ</i> silane‐polycondensation‐induced self‐assembly of poly(styrene‐<i>alt</i>‐maleic anhydride) as toughener for epoxy resins

Wei, Wei; Cui, Yuqing; Li, Xiaojie; Gu, Yuzong; Fei, Xiaoma; Luo, Jing; Liu, Xiaoya

doi:10.1002/app.47565

Cited by 8 publications

(5 citation statements)

References 47 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5, EP exhibits a smooth surface morphology with minimal tilted ripples due to the brittle fracture. In contrast, the fracture surfaces of EP composites become rougher and the folds increase, because PAMA or a-SEP@LDH may play a role as an impenetrable obstacle leading to crack bending and blocking [35].…”

Section: Dispersion Of A-sep@ldh/pama In Ep Matrixmentioning

confidence: 99%

The synergistic effect of sepiolite-LDH hybrid nanofiber and phytic-based nanosheet towards improving the fire retardancy, heat resistance, and mechanical properties of epoxy resin

Zhang

Han

et al. 2022

Preprint

View full text Add to dashboard Cite

Usually, it is difficult to achieve satisfactory fire retardancy of epoxy resin at low addition by adding inorganic nano-fillers alone. Herein, sepiolite nanofibers loaded with layered double metal hydroxide (a-SEP@LDH) and P/N-containing flame retardant nanosheet (PAMA) were prepared via hydrothermal method, respectively. The UL-94 V-0 rating and an LOI value of 31.6% were achieved for EP by loading 1wt% a-SEP@LDH and 2wt% PAMA. Compared to adding sole a-SEP@LDH, the thermal stability of EP/a-SEP@LDH/PAMA was improved significantly, the total heat release (THR) and peak heat release rate (pHRR) decreased by 10.2% and 28.8%, respectively. Additionally, the total CO2 production decreased by 12.5% and the char residue yield increased to 19.9wt%. Moreover, the tensile strength and impact strength of the EP composites were remarkably improved owing to the incorporation of PAMA. To sum up, this work provides an environmentally benign, low-cost and efficient way for EP to achieve outstanding fire retardance, excellent thermal stability and high mechanical properties at a low addition.

show abstract

Section: Dispersion Of A-sep@ldh/pama In Ep Matrixmentioning

confidence: 99%

The synergistic effect of sepiolite-LDH hybrid nanofiber and phytic-based nanosheet towards improving the fire retardancy, heat resistance, and mechanical properties of epoxy resin

Zhang

Han

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…It is probably because that the ─COOH groups on SiO 2 ─SMA particles can react with epoxy groups to form hydroxyl groups, which further activates anhydride and promotes the reaction between epoxy and anhydride. [29,30] 3. can also react with matrix resin to participate in the curing network of the epoxy resin, which leads to an enhanced crosslink density of the cured epoxy resin (see analysis result from DMA in Table 1). Moreover, the increase of elongation at break indicates that the introduction of SiO 2 -SMA particles can also improve the ductility of epoxy thermoset.…”

Section: Curing Behavior Of Dgeba Epoxy Resin Containing Sio 2 ─Sma Particlesmentioning

confidence: 99%

Silica/poly(styrene‐alt‐maleic anhydride) hybrid particles as a reactive toughener for epoxy resin

Wei

Zhao

Zhang

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Amino‐modified silica nanoparticles (SiO2─NH2) were first prepared by hydrolytic condensation of tetraethyl orthosilicate and 3‐aminopropylmethyldiethoxysilane. Then, organic–inorganic hybrid particles (SiO2─SMA) were prepared by the amidation reaction between SiO2─NH2 and poly(styrene‐alt‐maleic anhydride) (SMA). Subsequently, SiO2─SMA particles were employed for modifying bisphenol‐A epoxy/anhydride thermoset. Compared with pure cured epoxy, the modified epoxy thermosets with only 1 wt % of SiO2─SMA particles could achieve a simultaneous toughening and reinforcing performance. The tensile strength, impact strength, and fracture toughness of epoxy thermoset were increased by 14.1, 44.3, and 114.4%, respectively. Moreover, the modification also improved the thermal stability of epoxy thermosets, and the modulus and glass transition temperature of cured resin were not sacrificed. It can be attributed to the rigid structure of SiO2, as well as the anhydride and carboxyl groups onto the surface of SiO2─SMA particles participating in the epoxy curing reaction and effectively enhancing the crosslinking density of epoxy thermoset.

show abstract

“…In addition, block copolymers have emerged as important toughening agents. Weiwei et al [44] prepared organic-inorganic hybrid colloidal particles (SMA-APTES) by partially ammoniacalysing polystyrene-alt-maleic anhydride (SMA) with 3-aminopropyltriethoxysilane (APTES), followed by in situ hydrolytic condensation of the silane, inducing self-assembly of SMA. The resulting SMA-APTES particles were then used as toughening agents to strengthen epoxy.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Fu,

Kong,

et al. 2024

Coatings

View full text Add to dashboard Cite

Purified terephthalic acid (PTA) is widely used as a chemical raw material, with its production process resulting in significant compounds that generate a substantial amount of sludge waste annually. These compounds are known to possess active hydrogen. Utilizing this property, a novel approach for the treatment of PTA sludge waste was developed for its modification and re-use. This study focuses on the preparation of epoxy curing agents using PTA sludge-tank material. The modification of PTA sludge-tank material is achieved by using the one-pot method to investigate the toughening effect of home-made curing agents on epoxy resins and compare them with commercially available curing agents, and to analyze the mechanism of the structure of the curing agent on the material. The results showed that while the tensile strength of the experimental group was generally lower than that of the control group, the impact strength was significantly higher. Additionally, the hardness and tensile strength of the materials gradually decreased with an increase of the amount of hardener, while the elongation at break and impact strength increased. Notably, at a hardener amount of 35%, the elongation at break increased by 3.89%, and the tensile strength and impact strength reached 10.13 MPa and 42.86 kJ m−2, respectively, demonstrating excellent toughness and strength characteristics. These findings testified the feasibility of modifying PTA sludge waste to prepare an epoxy toughening curing agent is not only feasible, but also significantly enhances the material’s toughness.

show abstract

Reactive particles from in situ silane‐polycondensation‐induced self‐assembly of poly(styrene‐alt‐maleic anhydride) as toughener for epoxy resins

Cited by 8 publications

References 47 publications

The synergistic effect of sepiolite-LDH hybrid nanofiber and phytic-based nanosheet towards improving the fire retardancy, heat resistance, and mechanical properties of epoxy resin

The synergistic effect of sepiolite-LDH hybrid nanofiber and phytic-based nanosheet towards improving the fire retardancy, heat resistance, and mechanical properties of epoxy resin

Silica/poly(styrene‐alt‐maleic anhydride) hybrid particles as a reactive toughener for epoxy resin

Synthesis of an Epoxy Toughening Curing Agent through Modification of Terephthalic Acid Sludge Waste

Contact Info

Product

Resources

About