Patent ID: 11911786
Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A preparation method for a hydrate energy-storage temperature-control material, comprising the following steps:
step 1. generating a refrigerant hydrate;
step 2. crushing the hydrate: taking out the formed hydrate from a reactor, crushing, grinding and sieving by using a screen to obtain hydrate particles with a particle size of 180-250 μm and weighing same, and centrifuging by using a centrifugal machine at a revolving speed of not less than 2000 r/min for solid-liquid separation for 10-20 min;
step 3. spraying polytetrafluoroethylene suspended ultrafine powder onto the hydrate particles by using an electrostatic spraying device: placing the hydrate particles crushed in step 2 on a conveyor belt (5), and adding a high-voltage electrostatic field between a nozzle (4) and the hydrate particles (7), so the polytetrafluoroethylene suspended powder is adsorbed and coated onto the hydrate particles under the action of electrostatic force and gravity;
step 4. placing the hydrate particles (15) onto which the polytetrafluoroethylene powder is sprayed into a plasma instrument, and processing by using argon plasma so as to allow free radicals to be formed on the polytetrafluoroethylene surface;
step 5. placing a hydrate particles wrapped by modified PTFE powder into a vacuum closed container, heating a monomer solution until steam evaporates, keeping an airflow pressure at 40-50 Pa by using a throttle valve (8), introducing into the closed container (14), cooling the closed container (14) by using a water bath of 25-30° C. and irradiating by using a high-pressure mercury lamp (11) of ultraviolet lighting system for 80-90 min, to promote graft polymerization of a monomer and free radicals; obtaining the hydrate energy-storage temperature-control material.