ASA/SEBS/paraffin composites as phase change material for potential cooling and heating applications in building

Abstract

Phase change material (PCM) is able to melt and crystalize with a high heat of phase change at constant temperature, which provides new and green cooling and heating strategies for buildings. In this work, PCMs for buildings composed of acrylonitrile‐styrene‐acrylate copolymer (ASA), polystyrene‐b‐poly(ethylene/butylene)‐b‐polystyrene triblock copolymer (SEBS) and paraffin were fabricated by melt blending. The results of the accelerated leakage test indicated an excellent ability of PCMs to keep paraffin from leakage. Thermal properties suggested that the phase change enthalpy of PCMs increased with the increasing content of paraffin and their phase change temperature was close to the comfortable sensible temperature of human body, which made it quite suitable for building cooling and heating. Besides, PCMs presented excellent stability and reusability after several thermal cycling tests. The temperature test conducted with self‐designed cylindrical devices gave a more sufficient and direct demonstration of the cooling and heating effect. Remarkably, excellent cooling and heating performance (both as high as 15°C) of the composites could be obtained with the addition of paraffin. And the time span of the cooling and heating process was as long as 5 and 7.5 hours, respectively. Owing to its excellent cooling and heating capabilities, the ASA/SEBS/paraffin composites are of great potential to be applied in building temperature control.

Preparation and Performance Analysis of Form-Stable Composite Phase Change Materials with Different EG Particle Sizes and Mass Fractions for Thermal Energy Storage

“…As a support material, HDPE greatly improves the compressive strength of PA-Al 2 O 3 /HDPE CPCMs . As form-stable CPCMs, ASA/SEBS/PA can still maintain a complete shape after a 24 h accelerated leak test, which is since PA molecules have good compatibility with SEBS macromolecules; as a result, PA molecules can be firmly fixed on the molecular chain of SEBS . On the other hand, although the CPCMs prepared from these PAs and polymers have good shape stability, they also have high mechanical hardness and poor tensile ability, which makes the prepared CPCMs brittle and difficult to process and apply to complex products.…”

The thermal energy storage capacity and fire risk of phase change material based on the framework of modified melamine sponge

“…Phase change materials (PCMs) are an effective material to control the match between energy supply and energy demand due to the intermittency and instability of energy. 1,3 In the recent years, more and more PCMs are used in the building areas, which contribute to keep the environmental temperature stable and improve thermal comfort level of buildings. 4 Organic PCMs such as fatty acids, polyhydric alcohols are prevalent and received more and more attention because of low corrosiveness, large phase change enthalpy, excellent stability, high energy density, low cost as well as negligible supercooling and phase separation.…”

“…Energy crisis and greenhouse effect are becoming increasingly serious with the continuous consumption of fossil fuel resources and related emission of CO 2. 1,2 It is necessary to improve the energy efficiency and exploit new methods for energy conversion. Phase change materials (PCMs) are an effective material to control the match between energy supply and energy demand due to the intermittency and instability of energy 1,3 .…”

“… 1,2 It is necessary to improve the energy efficiency and exploit new methods for energy conversion. Phase change materials (PCMs) are an effective material to control the match between energy supply and energy demand due to the intermittency and instability of energy 1,3 . In the recent years, more and more PCMs are used in the building areas, which contribute to keep the environmental temperature stable and improve thermal comfort level of buildings 4 …”

Fabrication and experimental investigation of microencapsulated eutectic phase change material‐integrated polyurethane sandwich tin panel composite for thermal energy storage in buildings

“…The main benefit of integrating PCM thermal energy storage units with building technologies includes both their high storage capacities at a short temperature span and increased energy efficiency in new and refurbished buildings in combination with other active systems. Therefore, several researchers have studied the incorporation of PCM in building applications, such as wallboard building, 40‐42 building envelope, 43‐47 wall coatings, 48 concrete materials, 49‐51 bricks, 52‐54 and building roof for reducing the energy requirements 55 …”