scholarly journals Synthesis of monolithic shape-stabilized phase change materials with high mechanical stability via a porogen-assisted in situ sol–gel process

RSC Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 3072-3083 ◽  
Author(s):  
Felix Marske ◽  
Juliana Martins de Souza e Silva ◽  
Ralf B. Wehrspohn ◽  
Thomas Hahn ◽  
Dirk Enke
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Mechanical Stability ◽  
Sol Gel ◽  
High Loading ◽  
Core Shell ◽  
Loading Capacity ◽  
Sol Gel Process ◽  
High Mechanical Stability

Nanoconfinement of PCMs in core-shell-like silica structures via an inexpensive porogen-assisted sol–gel process to produce shape-stabilized PCMs as monoliths with high mechanical stability and high loading capacity.

Synthesis of “graphene-like” mesoporous carbons for shape-stabilized phase change materials with high loading capacity and improved latent heat

2017 ◽  
Vol 5 (46) ◽  
pp. 24321-24328 ◽  
Author(s):  
Jiawei Wang ◽  
Xilai Jia ◽  
Dimberu G. Atinafu ◽  
Mingshuo Wang ◽  
Ge Wang ◽  
...  
Keyword(s):  
Phase Change ◽  
Latent Heat ◽  
Phase Change Materials ◽  
High Loading ◽  
Loading Capacity ◽  
Mesoporous Carbons ◽  
High Enthalpy

We report a facile method of preparing mesoporous carbons which were used as supporting frameworks for high-loading and high-enthalpy PCMs.

Preparation of phase change materials microcapsules by using PMMA network-silica hybrid shell via sol-gel process

2009 ◽  
Vol 112 (3) ◽  
pp. 1850-1857 ◽  
Author(s):  
Chih Chung Chang ◽  
Yen Ling Tsai ◽  
Jen Jen Chiu ◽  
Hui Chen
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Silica Hybrid

Thermo-conductive phase change materials with binary fillers of core-shell-like distribution

2021 ◽  
Vol 144 ◽  
pp. 106326
Author(s):  
Sen Xue ◽  
Chuxin Lei ◽  
Dingyao Liu ◽  
Ke Wang ◽  
Kai Wu ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Core Shell ◽  
Conductive Phase

Synthesis and Intermolecularly Mediated Assembly of Organic Pigment in Hybrid Coating Films

1998 ◽  
Vol 519 ◽  
Author(s):  
Y. Yan ◽  
Z. Duan ◽  
D.-G. Chen ◽  
S. Ray Chaudhuri
Keyword(s):  
Sol Gel ◽  
Hybrid Coating ◽  
Hypsochromic Shift ◽  
Hybrid Films ◽  
Coating Films ◽  
Organic Pigment ◽  
Inorganic Hybrid ◽  
Matrix Interactions ◽  
Sol Gel Process

AbstractThe insoluble, strongly hydrogen bonded organic pigment of 3,6-bis-(4-chlorphenyl)-l,4- diketopyrrolo [3,4-c] pyrrole was transiently blocked by adding carbamate groups, and consequently incorporated into organic-inorganic hybrid matrices by a sol-gel process. The homo- (pigment-pigment) and hetero-intermolecular (pigment-matrix) interactions were found to control both the assembly and dispersion of pigment molecules in the hybrid coating films. A weaker interaction between matrices and pigment molecules results in aggregation of the carbamate pigment in the methyl-silicate films. A stronger interaction forms a homogenous dispersion and coloration of the phenyl-silicate films. The as-prepared methyl- and phenylsilicate films doped with the organic pigment were distinguished by a morphology change and a blue (hypsochromic) shift in absorption from 550 to 460 nm. Thermal treatment can remove the carbamate groups and in-situ form the organic pigment in the hybrid films.

Preparation and Characterization of Hexadecane Microcapsule Phase Change Materials by In Situ Polymerization

2013 ◽  
Vol 815 ◽  
pp. 367-370 ◽  
Author(s):  
Xiao Qiu Song ◽  
Yue Xia Li ◽  
Jing Wen Wang
Keyword(s):  
Particle Size ◽  
Phase Change ◽  
Phase Change Materials ◽  
In Situ Polymerization ◽  
Urea Formaldehyde ◽  
Agitation Speed ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mass Ratio

Hexadecane microcapsule phase change materials were prepared by the in-situ polymerization method using hexadecane as core materials, urea-formaldehyde resin and urea-formaldehyde resin modified with melamine as shell materials respectively. Effect of melamine on the properties of microcapsules was studied by FTIR, biomicroscopy (UBM), TGA and HPLC. The influences of system concentration, agitation speed and mass ratio of wall to core were also investigated. The results indicated that hexadecane was successfully coated by the two types of shell materials. The addition of melamine into the urea-formaldehyde resin microcapsule reduced microcapsule particle size and microencapsulation efficiency. The influences of factors such as system concentration, agitation speed and mass ratio of wall to core to different wall materials microcapsules presented different variety trends of the microcapsule particle size.

Highly conducting core–shell phase change materials for thermal regulation

2014 ◽  
Vol 66 (1-2) ◽  
pp. 131-139 ◽  
Author(s):  
Nuno Vitorino ◽  
João C.C. Abrantes ◽  
Jorge R. Frade
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Thermal Regulation ◽  
Core Shell
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