| abstract |
The invention discloses a PCM (pulse code modulation) board for an air-conditioning outdoor unit and a production process thereof, wherein the PCM board for the air-conditioning outdoor unit comprises a finish paint layer, a primer paint layer, a passivation layer, a substrate, the passivation layer, the primer paint layer and a back paint layer which are sequentially stacked; the finishing paint layer comprises the following components: castor oil modified waterborne polyurethane, modified carbon fiber, perchloro-ethylene resin, acetone, titanium dioxide, deionized water, barium sulfate, a flatting agent, a film-forming assistant, a dispersing agent and polyether modified organic siloxane; the back paint layer comprises the following components: the coating comprises an aqueous polyurethane dispersion, modified nano zinc oxide, hexafluorobutyl acrylate, nano silicon dioxide, chlorinated paraffin, a nano lotus leaf hydrophobic agent, a flatting agent, a film-forming auxiliary agent, a dispersing agent, polyether modified organic siloxane and deionized water. The PCM plate for the outdoor unit of the air conditioner has the advantages of good coating tensile property, difficult edge crack generation and excellent temperature and salt spray corrosion resistance. |