Poly(ethylene glycol)/poly(methyl methacrylate) blends as novel form‐stable phase‐change materials for thermal energy storage

Sarı, Ahmet; Alkan, Cemil; Karaipekli, Ali; Uzun, Orhan

doi:10.1002/app.31623

Cited by 56 publications

(4 citation statements)

References 22 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the above‐mentioned selection criteria (high Δ H M and different melting temperature ranges), PEG, PE, PP, and POM (high Δ H M ) and PA (higher melting temperature range) were identified as the most suitable polymeric PCM. The applicability of PEG as PCM has already been examined profoundly . The melting temperature range of polypropylene (PP) is almost congruent with polyoxymethylene (POM), which exhibits higher Δ H M , and the degradation behavior of PP is assumed to be comparable to the one of PE.…”

Section: Materials Selectionmentioning

confidence: 99%

“…Nevertheless, up to now, polymeric materials have mostly been applied as form‐stabilizer for PCM,for example, refs. –i, and with two exceptions not as PCM per se: polyethylene glycol has been tested as PCM profoundly and polyethylene has been considered as PCM by a few authors . However, also various other semi‐crystalline polymers show great potential as PCM, especially with regard to high heat of fusion, different suitable melting temperature ranges, cost‐effectiveness, easily adaptable properties via compounding, and the potential use of recycled polymers.…”

Section: Introduction and Scopementioning

confidence: 99%

See 1 more Smart Citation

Applicability of Polymeric Materials as Phase Change Materials

Weingrill

Resch‐Fauster

Zauner

2018

Macro Materials & Eng

View full text Add to dashboard Cite

The applicability of more than 70 semi‐crystalline polymer grades with different melting temperatures as phase change materials (PCM) is investigated. Their storage capacity (heat of fusion) and application temperature range (defined by the melting temperature range and the degradation behavior) are analyzed via differential scanning calorimetry (DSC). Application‐oriented stability investigations (thermal cycling and exposure to static thermal load above the polymer’s melting temperature) are applied on the most promising polymer types. The thermal and thermo‐oxidative degradation behavior is monitored via DSC and Fourier‐transform infrared spectroscopy. Different aging phenomena are identified. However, these have only little impact on the polymer’s storage capacity. Therefore, a great potential of polymers as PCM is revealed. Additionally, the economic efficiency of polymers as PCM is estimated and discussed.

show abstract

Section: Materials Selectionmentioning

confidence: 99%

Section: Introduction and Scopementioning

confidence: 99%

Applicability of Polymeric Materials as Phase Change Materials

Weingrill

Resch‐Fauster

Zauner

2018

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…For a practical use, the PCMs need to be confined by encapsulation (Fredi et al, 2018(Fredi et al, , 2019 or by the stabilization of shape (Phadungphatthanakoon et al, 2011;Dorigato et al, 2017a;Fredi et al, 2017) in order to avoid their leakage after the melting process. The stabilization of shape can be performed by using polymer matrices such as highdensity polyethylene (Hong and Xin-shi, 2000), polypropylene (Krupa et al, 2007), poly(methylmethacrylate) (Sari et al, 2009), polyurethane copolymers (Cao and Pengsheng, 2006), acrylic resins (Kaygusuz et al, 2008), styrene-butadiene-styrene rubber, and ethylene-propylene diene monomer (EPDM) rubber (Valentini et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Production and Characterization of TES-EPDM Foams With Paraffin for Thermal Management Applications

et al. 2021

View full text Add to dashboard Cite

New materials capable of storing thermal energy in view of building applications have been developed from the foaming of ethylene-propylene diene monomer (EPDM) rubber with the addition of paraffin as a phase change material (PCM) at a melting temperature of about 21°C. Considering that the EPDM foams prepared by using traditional chemical blowing agents are generally characterized by a rather elevated environmental load, the salt leaching technique has been selected (and optimized) for the production of an EPDM foam with geometrical density of 0.41 g/cm3. It has been demonstrated that the produced foams were capable of retaining up to 62 wt% of paraffin after a 38-days leaking test. The role of the absorption of paraffin on the thermal and mechanical properties of the produced foams has been investigated. The effective thermal energy of the PCM content (PCMeff) measured by differential scanning calorimetry (DSC) was 52% both in the heating and cooling scans. Shore A test, compression set (CS) test, and quasi-static compression test above and below the thermal transition of the selected PCM have been performed, and a strong dependence of materials in respect to the testing temperature has been observed, with paraffin acting as a hardener above its melting point and as a softener below its melting point. Moreover, the evaluation of the thermal energy storage (TES) performance of the foams by monitoring their surface temperature during a heating/cooling process revealed that the time required from the samples to reach the set temperature due to the presence of paraffin was three times higher in comparison to the reference sample without paraffin. Moreover, in the plateau due to paraffin melting/crystallization, heating/cooling rates of around 0.4°C/min have been found, which are much lower with respect to that of a reference sample (>1.5°C/min). Thermal efficiency and thermal intervals for the application of EPDM/paraffin have been determined in a most accurate manner and therefore have been performed DSC at a heating/cooling rate of 1°C/min. These TES-EPDM foams exhibited a thermal capacity of 120–128 J/g with an operative interval in the range from −20°C to 40°C. The produced foams were capable of maintaining their geometry after being subjected to 240 heating/cooling cycles between 0 and 40°C, and their residual TES capacity was higher than 90% for all the samples (about 95% for the materials tested on aluminum substrate). The most interesting properties for TES applications were found for the produced foams via salt leaching with 60–80 microns NaCl.

show abstract

“…Paraffins are the most used PCMs thanks to the high heat of fusion and low price; in literature, several applications of paraffin for the thermal energy storage of buildings are reported [13][14][15][16]. One problem of using phase change materials is their leakage in the molten state which requires their encapsulation and/or shape stabilization within polymer matrices [17][18][19][20][21][22][23][24][25][26][27][28] or ceramic structures [29]. The second and main problem related to the possible use of PCMs in building application is their flammability and the fact that in case of fire they represent additional fuel.…”

Section: Introductionmentioning

confidence: 99%