scholarly journals Stimuli-reponsive polymer composite for energy saving thermotropic smart window

2018 ◽  
Author(s):  
◽  
Heng Yeong Lee
Keyword(s):  
Energy Saving ◽  
Polymer Composite ◽  
Smart Window

Chameleon-Inspired Energy-Saving Smart Window Responding to Natural Weather

2021 ◽  
Author(s):  
Zeqian Sun ◽  
Xinmin Xie ◽  
Wenlong Xu ◽  
Kun Chen ◽  
Yihan Liu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Smart Window

scholarly journals Energy-Efficient Smart Window Based on Thermochromic Hydrogel with Ultrahigh Visible Transparency and Unprecedented Infrared Transmittance Modulation

2021 ◽  
Author(s):  
Rong Zhang ◽  
Bo Xiang ◽  
Min Feng ◽  
Liru Xia ◽  
Lei Xu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Superior Performance ◽  
Significant Advance ◽  
Solar Modulation ◽  
Smart Window ◽  
Smart Windows ◽  
Responsive Materials ◽  
Infrared Transmittance ◽  
Potential Applications ◽  
Glass Panels

Abstract Both high visible transparency and strong solar modulating ability are highly required for energy-saving smart windows, but conventional responsive materials usually have low transparency and narrow solar transmittance range. Herein, we report a significant advance toward the design and fabrication of responsive smart windows by trapping novel V0.8W0.2O2@SiO2 doped poly(N-isopropyl acrylamide) (PNIPAm) thermochromic liquid hydrogel within two glass panels. The smart window is highly transparent to allow solar transmittance at low temperatures, while turns opaque automatically to cut off solar energy gain when exposed in sunlight. With a remarkably low content (1.0wt‰) of dopant, V0.8W0.2O2@SiO2/PNIPAm (VSP) hydrogels exhibit ultrahigh luminous transmittance Tlum of 92.48% and solar modulation ∆Tsol of 77.20%. The superior performance is mainly attributed to that V0.8W0.2O2@SiO2 doping induces PNIPAm particles’ size reduction and internal structure change. W-doping decreases the phase transition temperature (Tc) of VO2 from 68 ºC to ~30 ºC (close to the Tc of PNIPAm), contributing to an unprecedented infrared transmittance modulation. Especially, the smart window shows excellent energy-saving during daytime outdoor demonstrations where practically achievable cooling temperature reaches up to 15.1 ºC. In addition, the smart window exhibits outstanding stability, as embodied by unchanged optical performance even after 100 transparency-opaqueness reversible cycles. This new type of thermochromic hydrogel offering unique advantages of shape-independence, scalability together with soundproof functionality promises potential applications in energy-saving buildings and greenhouses.

Sunlight-Induced Photo-Thermochromic Supramolecular Nanocomposite Hydrogel Film for Energy-Saving Smart Window

Solar RRL ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 1800204 ◽  
Author(s):  
Zuqiang Xu ◽  
Sai Wang ◽  
Xiao-Yu Hu ◽  
Juli Jiang ◽  
Xiaoqiang Sun ◽  
...  
Keyword(s):  
Energy Saving ◽  
Nanocomposite Hydrogel ◽  
Smart Window ◽  
Hydrogel Film

Microwave-assisted foaming and sintering to prepare lightweight high-strength polystyrene/carbon nanotubes composite foams with an ultralow percolation threshold

2021 ◽  
Author(s):  
Yeping Xie ◽  
Zhao Li ◽  
Jiahong Tang ◽  
Pan Li ◽  
Wenhua Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Energy Saving ◽  
Polymer Composite ◽  
High Strength ◽  
High Tech ◽  
Microwave Assisted ◽  
Composite Foams

Lightweight, high-strength, and multifunctional polymer composite foams are urgently needed in various high-tech areas. Herein, we proposed a facile, clean, and energy-saving strategy to prepare the microcellular polystyrene/carbon nanotubes (PS/CNTs)...

Energy-Efficient Smart Window Based on Thermochromic Microgel with Ultrahigh Visible Transparency and Infrared Transmittance Modulation

2021 ◽  
Author(s):  
Rong Zhang ◽  
Bo Xiang ◽  
Yuchun Shen ◽  
Liru Xia ◽  
Lei Xu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Smart Window ◽  
Smart Windows ◽  
Responsive Materials ◽  
Infrared Transmittance

Both high visible transparency and strong solar modulating ability are highly required for energy-saving smart windows, but conventional responsive materials usually have low transparency and narrow solar transmittance range. Herein,...

Photochromic transparent wood for photo-switchable smart window applications

2019 ◽  
Vol 7 (28) ◽  
pp. 8649-8654 ◽  
Author(s):  
Lihong Wang ◽  
Yanjun Liu ◽  
Xiyun Zhan ◽  
Dan Luo ◽  
Xiaowei Sun
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Building Material ◽  
Optical Transmittance ◽  
Smart Window ◽  
High Toughness ◽  
High Optical Transmittance ◽  
Window Applications ◽  
Significant Attention

Transparent wood with high optical transmittance, excellent thermal insulation and high toughness has attracted significant attention as an energy-saving building material.

Enantiomorphic double-polymerized chiral polymer composite template for highly efficient energy-saving green window

Polymer ◽  
2020 ◽  
Vol 200 ◽  
pp. 122586
Author(s):  
Jia-De Lin ◽  
Meng-Huan Wu ◽  
Shun-An Jiang ◽  
Yan-Song Zhang ◽  
Hung-Lin Chen ◽  
...  
Keyword(s):  
Energy Saving ◽  
Polymer Composite ◽  
Efficient Energy ◽  
Highly Efficient ◽  
Chiral Polymer

scholarly journals Energy-saving technology of production of elements of building structures from polymer materials

2021 ◽  
pp. 41-48
Author(s):  
A.V. Kondratiev ◽  
О.О. Prontsevych
Keyword(s):  
Composite Materials ◽  
Energy Saving ◽  
Polymer Composite ◽  
Technological Process ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Gas Evolution ◽  
Curing Process ◽  
Structural Elements ◽  
Energy Saving Technology

Problem statement. At present, the increase in the efficiency of the technology for the production of composite structural elements is associated with high energy costs. In this regard, the implementation of ways to optimize the parameters of the technological process of manufacturing polymer composite materials is of great importance. The purpose of the article is to optimize the modes of impregnation and curing of thermosetting binders and polymer composite materials based on them in combination with the kinetics of gas evolution and control of all stages of the technological process. Results. An energy-saving technology for molding composite structural elements of buildings and structures has been developed, which provides a reduction in the duration of the curing process of polymer materials, depending on the type of binder. The technology makes it possible to control the speed and degree of curing of a thermosetting binder by changing the tangent of the dielectric loss angle and electrical conductivity. Scientific novelty and practical significance. The approach and the electrophysical method for optimizing the modes of impregnation and curing of composite products in combination with the control of all stages of the technological process have been further developed in relation to the elements of composite structures. The permissible values of the curing parameters have been established according to the optimized mode of a number of thermosetting binders: heating rates, isotherm temperatures, and holding time at them. At the same time, the achieved optimal curing times for binders BFOS, LBS-4, ENFB, 5-211B using the new technology is 2.4; 1.8; 3.0; 2.3; 2.0 and 1.2 times less than according to known technologies. The results obtained guarantee the quality of the resulting composite product and are recommended for accelerating the curing process of polymer materials. Keywords: optimization; technological regime; impregnation; curing; thermosetting binders; gas evolution; stage control

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