Decorative external wall panel preparation method and obtained decorative external wall panel

The invention provides a decorative external wall panel preparation method which comprises the steps of carrying out a technology of precast member production in reverse position on tiles; firstly, paving the tiles in a die; then concreting on the tiles; and carrying out steam-curing step by step so as to obtain the decorative external wall panel. In the preparation process, the tiles are firstlypaved in a die liner, and only one bonding surface exists between tiles and concrete, so that the controllability is high, the operation can be carried out conveniently, and the obtained decorative external wall panel is flat in smooth, high in tile bonding strength, not easy to fall off, and high in strength. The decorative external wall panel obtained by adopting the method provided by the invention is high in tile bonding strength, convenient to construct and labor-saving. 本发明提供一种装饰外墙板的制备方法，所述制备方法通过将瓷砖反打，将瓷砖先铺设在模具内，然后在瓷砖上浇注混凝土，分步蒸养的方式，得到装饰外墙板。由于在制备过程中，瓷先铺设在模衬内，仅有瓷砖与混凝土一个粘结面，可控性强，操作方便，得到的装饰外墙板表面平整，瓷砖粘结强度高，不易脱落，装饰外墙板