Synthesis and characterization of polyethylene glycol/modified attapulgite form-stable composite phase change material for thermal energy storage

Shi, Junbing; Li, Min

doi:10.1016/j.solener.2020.05.064

Cited by 57 publications

(15 citation statements)

References 43 publications

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“…[44] In the spectrum of CS/PEG, the absorption peak at 2888 cm À1 belonged to the C H stretching vibration of CH 2 in PEG, which was consistent with the previous study. [3,44] The peak at 1111 cm À1 was caused by the stretching vibration of C O C groups, the absorption band at 3425 cm À1 indicated terminal hydroxyl groups of PEG. [17,44] The FT-IR spectra of CS/PEG/Pal composite and CS/PEG had characteristic peaks in the similar frequency band.…”

Section: Characterizationmentioning

confidence: 99%

“…In order to solve the problem of energy loss caused by wear, the research of lubricants has been widely used in various fields. [ 2–4 ]…”

Section: Introductionmentioning

confidence: 99%

“…In order to solve the problem of energy loss caused by wear, the research of lubricants has been widely used in various fields. [2][3][4] However, compared with oil-based lubricants, waterbased lubricants had obvious advantages. [5][6][7][8] Some physical and chemical methods cannot completely eliminate the environmental pollution caused by lubricating oil leakage.…”

Section: Introductionmentioning

confidence: 99%

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Excellent effect of lubrication performance of chitosan/polyethylene glycol/palygorskite as water‐based lubricating additive on 304 stainless steel and polymer pairs

Liu

et al. 2022

Polymer Engineering & Sci

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In this work, Palygorskite (Pal) nanorods, chitosan (CS), and polyethylene glycol (PEG) are used to prepare new composite lubricants in order to improve the lubrication performance of water. The tribological experimental results showed that the composite lubricant composed with 1 wt% Pal, 10 wt% PEG and 2 wt% CS has excellent lubrication performance. The tribological data showed that the friction coefficient reached 0.021, and the composite lubricant lubrication performance was about 4 times higher than that of deionized water. The materials were characterized by scanning electron microscope (SEM), thermogravimetric analyses (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), which revealed that the composite lubricant contained many oxygen-containing functional groups, and there was no chemical reaction between these functional groups. Instead, a lubricating film that can reduce friction and wear was formed through the hydrogen bond effect between functional groups. In this paper, a general and simple preparation method of new composite lubricant was proposed, which can be wildly used in many fields such as water-based lubrication.

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Section: Characterizationmentioning

confidence: 99%

“…In order to solve the problem of energy loss caused by wear, the research of lubricants has been widely used in various fields. [ 2–4 ]…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Excellent effect of lubrication performance of chitosan/polyethylene glycol/palygorskite as water‐based lubricating additive on 304 stainless steel and polymer pairs

Liu

et al. 2022

Polymer Engineering & Sci

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“…However, the hydrophilic nature of Pal results in weak interfacial adhesion to the hydrophobic polymer matrix. Modification of Pal is needed to improve its compatibility and dispersion in the polymer matrix, thus increasing the load transfer efficiency of the system [19,20].…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Fabrication of Modified Palygorskite-Reinforced Rigid Polyurethane Foam Nanocomposites

et al. 2022

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Integration of nanoclay minerals into rigid polyurethane foams (RPUFs) is a cost-effective solution to enhance foam’s performance via environmental protection technology. In this work, palygorskite/RPUFs nanocomposites (Pal/RPUFNs) with excellent mechanical properties and thermal stability were prepared via a one-step method, using 4,4’-diphenylmethane diisocyanate and polyether polyol as the starting materials, coupled with Pal modified by silane coupling agent KH570. The effects of the modified Pal on the mechanics, morphology, and thermal properties of the nanocomposites were studied systematically. When the content of the modified Pal was 8 wt% of polyether polyol, the elastic modulus and compressive strength of the Pal/RPUFNs were increased by ca. 131% and 97%, respectively. The scanning electron microscopy images indicated that the addition of the modified Pal significantly decreased the cell diameter of the Pal/RPUFNs. The results of thermogravimetric and derivative thermogravimetry analyses revealed that the addition of the modified Pal increased the thermal weight loss central temperature of the Pal/RPUFNs, showing better thermal stability in comparison with the pure RPUFs. A self-made evaluation device was used to estimate the thermal insulation ability of the Pal/RPUFNs. It was found that the small cell size and uniform cellular structure were keys to improving the thermal insulation performance of the RPUFs. The prepared Pal/RPUFNs are expected to have great potential in the field of building insulation.

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“…The heat storage principle of PCMs is to absorb and release a large amount of heat during melting and crystallization 1–4 . Many solid–liquid PCMs (SLPCM) have been developed, such as paraffin, 5,6 fatty acids, 7–9 polyolefins, 10,11 alcohols, 12–14 and amides 15–17 . However, these are prone to leakage during the phase change process 18–21 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication and performance of shape‐stable phase change materials based on epoxy group crosslinking

Tao

Chen

Liu

et al. 2021

J of Applied Polymer Sci

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Shape‐stable phase change materials (SSPCMs) have attracted increased attention as they can be used in applications such as solar energy storage materials and smart textiles. Hexadecyl acrylate (HDA) was free‐radical copolymerized with allyl glycidyl ether (AGE) to form a copolymer with epoxy groups. It was further solidified with diethylenetriamine to form a series of novel SSPCMs. HDA could be limited to a stable 3D cross‐linking network constructed from epoxy groups, giving PCM excellent shape stability. Infrared spectroscopy and hydrogen nuclear magnetic spectroscopy showed the successful fabrication of poly(hexadecyl acrylate) (PHDA) with epoxy group. The maximum enthalpies of the SSPCMs with 5 wt% AGE during heating and cooling were 86 and 86 J/g, respectively, which indicated that they have good thermal energy storage densities. The initial melting and freezing temperatures were 32 and 29°C, respectively, which were within the comfortable temperature range of human body. In addition, the thermal decomposition temperature of SSPCMs was higher than 270°C. After 50 thermal cycles, the materials still showed excellent phase change performances. Moreover, the specimen with low degree of cross‐linking had similar temperature control and thermal response capabilities to PHDA. These SSPCMs exhibited excellent thermal performance, thermal reliabilities, and stabilities. Therefore, they were expected to be applied in various applications, including solar energy storage, energy‐saving buildings, and wearable temperature control textiles.

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Synthesis and characterization of polyethylene glycol/modified attapulgite form-stable composite phase change material for thermal energy storage

Cited by 57 publications

References 43 publications

Excellent effect of lubrication performance of chitosan/polyethylene glycol/palygorskite as water‐based lubricating additive on 304 stainless steel and polymer pairs

Excellent effect of lubrication performance of chitosan/polyethylene glycol/palygorskite as water‐based lubricating additive on 304 stainless steel and polymer pairs

Cost-Effective Fabrication of Modified Palygorskite-Reinforced Rigid Polyurethane Foam Nanocomposites

Fabrication and performance of shape‐stable phase change materials based on epoxy group crosslinking

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