Fixed shape phase-change material based on tetradecane and method for producing the same
A technology of shape-setting phase change material and tetradecane, applied in the field of materials, can solve problems such as inconvenience of direct application, and achieve the effect of convenient application
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[0025] The preparation method of the fixed-shape phase-change material involved in the present invention is:
[0026] (1) Dry PE and thermoplastic elastomer at 60-80°C for 6-12 hours, then cool to room temperature. Mix the two together with C14 and cross-linking agent in proportion, and place them at room temperature for 24 hours.
[0027] (2) Reactively extrude the mixing system of (1) in a screw extruder. The temperature of each section of the extruder from the feeding port, the barrel to the head is 130-150°C, 140-150°C and 130-150°C respectively.
[0028] (3) Extruded profiles (including but not limited to plates) are cooled after being coated with EVOH (ethylene-vinyl alcohol copolymer) film.
[0029] According to different material formulations, the present invention can prepare hard boards and soft coils respectively to meet different application requirements.
Embodiment 1
[0031] (1) Dry 40kg of PE and 27kg of SBS at 80°C for 6 hours, then cool to room temperature. And mix well with 30kg of C14 and 3kg of BPO, and leave it at room temperature for 24 hours.
[0032] (2) Extrude the mixture of (1) in a twin-screw extruder. The temperature of each section of the extruder is respectively: feeding port 150°C, barrel 150°C, head 150°C.
[0033] (3) Extrude the surface of the plate to coat the EVOH film and then cool to obtain a hard plate-shaped phase-change material.
Embodiment 2
[0035] (1) Dry 20 kg of SIS at 60°C for 8 hours, then cool to room temperature. And mix evenly with 80 kg of C14, leave it at room temperature for 24 hours.
[0036] (2) Extrude the mixture of (1) in a twin-screw extruder. The temperature of each section of the extruder is respectively: feeding port 130°C, barrel 150°C, head 130°C.
[0037] (3) Coating EVOH film on the surface of the extruded plate and cooling to obtain a soft shape-setting phase change material coil.
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