氧化铁颜料在水泥彩色瓦中的应用
随着人们生活水平的提高,对城市建筑的美观要求越来越高,使得彩色水泥瓦有了飞快的发展。彩色水泥瓦在我国尚处于一个新兴的行业,对一些新建的彩色水泥瓦厂必须对厂址、机械设备、技术工艺进行合理地选择,以减少彩色水泥瓦制造商的不必要的损失。 目前国内的彩色水泥瓦主要有表层彩色型水泥瓦和混合型(同质)彩色水泥瓦。颜色贯注瓦片整体的混合型,一般称为同质彩色瓦,欧美国家的彩色水泥瓦均采用同质瓦,色彩迷幻自然,色泽亚光柔和;国内彩色水泥瓦厂大多采用表层彩色型,可能受琉璃瓦色彩影响,大红大绿、色泽光亮的彩色水泥瓦容易被房产商接受。相信我国的彩色水泥瓦在以哑光、铁红色为主的基础上,迷幻自然的色彩将会很快流行起来。 国内彩瓦生产线多数采用上料、搅拌、辊轧成型、切割、着色处理、养护、脱模、包装等工序,在生产设备上有引进国外全自动生产线的,有国产半自动生产线的。衬托模具的材质有钢板的、铸铁的和铝锌合金的,薄钢板的易变形,铸铁的太笨重,铝锌合金的衬托模具则一次性投资较大。因此,设备和模具的差异使得国内彩色水泥瓦的质量也就参差不齐。
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