Graphene oxide modified hydrate salt hydrogels: form-stable phase change materials for smart thermal management

2016 ◽  
Vol 4 (46) ◽  
pp. 18134-18143 ◽  
Author(s):  
Yushi Liu ◽  
Yingzi Yang ◽  
Shuangxin Li
Keyword(s):  
Phase Transition ◽  
Graphene Oxide ◽  
Phase Change ◽  
Thermal Management ◽  
Phase Change Materials ◽  
Stable Phase ◽  
Hydrate Salt

The adjustment of phase transition behaviors based on the special interaction of GO and PAAAM with hydrate salt PCM.

PEG/3D graphene oxide network form-stable phase change materials with ultrahigh filler content

2019 ◽  
Vol 7 (37) ◽  
pp. 21371-21377 ◽  
Author(s):  
Jinjing Qiu ◽  
Xiaoqiao Fan ◽  
Yusheng Shi ◽  
Shufen Zhang ◽  
Xin Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Phase Change ◽  
Phase Change Materials ◽  
Filler Content ◽  
Stable Phase ◽  
Cross Linking ◽  
Storage Density ◽  
3D Graphene ◽  
Network Form

In situ side-to-side cross-linking of GO maximizes the PEG filler content and enhances the thermal storage density of CPCMs.

Preparation and Properties of Form-Stable Phase Change Materials Polyacrylonitrile Fiber / Stearic Acid Blends

2011 ◽  
Vol 197-198 ◽  
pp. 584-588 ◽  
Author(s):  
Jing Guo ◽  
Heng Xue Xiang ◽  
Qian Qian Wang
Keyword(s):  
Phase Transition ◽  
Stearic Acid ◽  
Phase Change ◽  
Latent Heat ◽  
Thermal Insulation ◽  
Phase Change Materials ◽  
Cooling Curve ◽  
Stable Phase ◽  
Polyacrylonitrile Fiber ◽  
Soaking Time

With stearic acid (SA) as phase change material, waste polyacrylonitrile fiber (PAN) as framework material, N,N-dimethylformamide (DMF) as solvent, form-stable PAN/SA blends phase change materials (PCM) are prepared by solution blending process. Phase change temperature and latent heat and the thermal stability of the PAN/SA PCM are characterized using Differential Scanning Calorimetry (DSC). The structure, crystalline morphology, and thermal insulation properties of the PAN/SA PCMs are investigated using Fourier transformation infrared spectroscope (FTIR), polarizing optical microscopy (POM), and temperature-recording instrument. The FTIR and POM results show that PAN and SA are combined by intermolecular forces, and SA is homogeneous distribution in the PAN matrix. The DSC results indicate that PAN/SA PCMs have high latent heat storage capacity of more than 115J/g, the phase transition temperature and phase transition enthalpy of the PCMs increase with increasing the mass percent of SA. Cooling curve of PAN/SA PCMs show that the PCMs have good insulation properties, the soaking time is continued for about six minutes, and the thermal insulation properties remain unchanged after five and ten times of thermal cycling. The best process condition is obtained by the soaking time and orthogonal experiment.

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