Preparation of carbon nanotubes/epoxy composites using novel aerogel substrates

Li, Yang; Dong, Liubing; Zhang, Xiang; Lu, Yinghua; Fang, Weiping; Yang, Yiquan

doi:10.1016/j.matlet.2015.08.010

Cited by 12 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SiO 2 aerogels, ZrO 2 aerogels, TiO 2 aerogels are examples of inorganic aerogels, and fibrous cellulose aerogels and resorcinol–formaldehyde aerogels are examples of organic aerogels . There have been many investigations in which different kinds of aerogels were used for useful purposes . One of the most common aerogels is silica aerogel.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

Maghsoudi

Motahari

2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

Epoxy composites were prepared with different contents of hydrophobic silica aerogel particles to investigate their mechanical, thermal, and hydrophobic properties. The composites, particularly the one containing 1 wt % silica aerogel, showed remarkable toughness and yielding behaviors compared to neat epoxy, with its brittle behavior. As the content of silica aerogel increased, the thermal properties of the composites (e.g., thermal conductivity and thermal stability) improved. This was due to the very low thermal conductivity and high thermal stability of the silica aerogel particles. Moreover, the use of the hydrophobic silica aerogel led to the development of composites with hydrophobic properties. To examine the hydrophobicity more deeply, a series of water‐uptake tests were performed, and the results show that the composite with 3 wt % silica aerogel absorbed 50% less water than the neat epoxy. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45706.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

Maghsoudi

Motahari

2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…As shown in Fig. 2(a), please refer to the gas phase dispersion method of CNTs reported by Li et al [27][28][29][30]. CNTs gas phase spray was made by self-made equipment.…”

Section: Methods and Equipmentmentioning

confidence: 99%

The effect of carbon nanotubes wrapping conformation on the interfacial properties of carbon fiber

Chang

et al. 2023

Preprint

View full text Add to dashboard Cite

In order to realize the goal of mass production of modification technology, CNTs would be dispersed in gas phase rapidly and then be sprayed to the surface of industrial CF that contain sizing agent. This will increase Interface shear strength (IFSS) of CF from 26MPa before processing to 35MPa maximum (increased about 33.9%). Due to the embedding function that sizing agent has on CNTs, three types of CNTs adhering to the surface of CF are formed. They are complete embedding type (σ1), partial embedding type (σ2) and sufficient exposure type (σ3). This paper analyses the relations between three formations and processing time, and the contribution to IFSS of each type. It is found that the low content of σ1 has a positive effect on IFSS which can reach 6MPa and σ2 has an even stronger effect on the improvement of IFSS compared with σ1on the same concentration. While σ3 has a negative effect on IFSS all the time.

show abstract

“…CNTs blocks were placed in a negative pressure chamber and dispersed according to the free arc dispersion method. 25,26 The dispersion voltage was 12 KV, the frequency was 10 Hz, the positive electrode was tungsten metal, the negative electrode was titanium metal, and CNTs dispersion fog was obtained. The CNTs dispersion fog was pulled into the three-stage channel by negative pressure, the channel inlet diameter was 10 mm, outlet was 4 mm, length was 30 mm, and the interval was 20 mm.…”

Section: Methodsmentioning

confidence: 99%

“…However, the direct spraying method is based on the CNTs free arc dispersion method. 25,26 Because of some CNTs aggregates will not be dispersedand attach to the CFs surface during the direct spraying process, some problems such as thermal resistance increasing and stress concentration for CFs composites will arise. Therefore, the performance of CF composites fails to meet the expectations.…”

Section: Introductionmentioning

confidence: 99%

Three-stage channel sprays carbon nanotubes onto carbon fibers surface, preparing high performance carbon fibers composites

Zhang

Shi

Gao

et al. 2023

Journal of Composite Materials

View full text Add to dashboard Cite

Carbon fibers composites performance strengthening through graft Carbon nanotubes is a research hotspot at present. Here, a method for rapidly and effectively dispersing and removing CNT aggregates during spraying the CNTs onto CFs surface by the three-stage channel is reported. The scanning electron microscopy image characterization results shows that the three-stage channel has a significant effect on the removal of CNTs aggregates, and the obtained p-CNTs has a good dispersion morphology. Under the same condition, p-CNTs@CFs/EP and CNTs@CFs/EP composites are prepared by the three-stage channel spraying and direct spraying method respectively. Compared with no treatment CFs composites (o@CFs/EP), the tensile, compressive and interlaminar shear strength and radial thermal conductivity (λ⊥) of the CNTs@CFs/EP are increased by 7%, 11%, 9% and 80% (2452.04 MPa, 1209.37 MPa, 89.30 MPa and 1.28 W/(m·K)), the p-CNTs@CFs/EP increased by 29%, 35%, 37% and 203% (2949.06 MPa, 1471.67 MPa, 112.37 MPa and 2.15 W/(m·K)), the CNTs@CFs/EP resistivity is 72.72 Ω·m, a 64% decrease, the p-CNTs@CFs/EP is 45.45 Ω·m, a decrease of 78%. This indicates that the CFs composites prepared by the three-stage channel spraying method has better performance than direct spraying and no treatment. This method provides a new idea for CFs composites performance strengthening.

show abstract

Preparation of carbon nanotubes/epoxy composites using novel aerogel substrates

Cited by 12 publications

References 16 publications

Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

Mechanical, thermal, and hydrophobic properties of silica aerogel–epoxy composites

The effect of carbon nanotubes wrapping conformation on the interfacial properties of carbon fiber

Three-stage channel sprays carbon nanotubes onto carbon fibers surface, preparing high performance carbon fibers composites

Contact Info

Product

Resources

About