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部分石材的研磨与晶面处理时特别注意事项

作者:管理员 发表时间:2015-1-26 17:10:53 阅读:
                                                                              
                                                                本文部分石材是指:木纹石、白沙米黄、沙漠风,雅士白、砂岩等石材 
                                                                1、给足水泥养护干透期,不可迅速勾缝补胶 
                                                                      地面石材通常采用水泥湿式铺贴,由于赶工,安装完后没等水泥完全固化、水泥中的碱份
                                                                没有完全透出,就开始切缝、将石材拼缝采用云石胶或其他流质树脂胶封闭,开始整体研磨,这
                                                                样进一步堵住了石材底部水泥中水碱份的透出管道,使得水碱被逼至石材孔隙、裂隙最大的地方
                                                                反渗透出来,造成石材表面析出的白色的盐碱斑,或者裂隙处的黑色水泥印。所以,石材铺贴完
                                                                后,不要急于补胶和研磨。 
                                                                2、干磨 
                                                                      由于木纹石、白沙米黄、沙漠风,砂岩、雅士白毛孔大和含铁量高,若一直采用水磨到底,
                                                                这样会加快石材的吸水速度,量、从而挥发慢,使得石材吸入大量水分,更容易返碱和使得水分与
                                                                石材(雅士白、沙漠风)里的铁产生氧化反应,生成新的黄锈斑。所以,采用干磨,使石材不再因
                                                                研磨吸收更多水分。 
                                                                3、细磨后的防护处理 
                                                                      细磨片(块)打磨后,做次有机氟防护剂涂布,待干透24小时。采用抛光磨片(块)高速
                                                               (磨盘转速800转/分)水抛。这样为满足石材出光效果。特别是木纹石、雅士白较难出光需采用抛
                                                                光片(块)高速水抛。白沙米黄、沙漠风、砂岩等做防护后低速抛光即可。     
                                                                4、磨块抛光后结晶处理前再次防护处理 
                                                                      磨块(精磨)抛光后,开始做结晶处理前,再做一次防护处理,更有效缩小石材的毛孔和
                                                                裂隙。因为毛孔大的石材在做结晶粉的结晶处理研磨时,介质水很容直接渗透,即水和粉的混合物
                                                                酸化剂不能悬浮于石材表面在白垫与地面之间摩擦产生热能的作用下与石材产生充分物理、化学反
                                                                应而形成新的结晶层,所以,做再次防护处理,缩小石材毛细孔,使结晶(剂)粉、水不直接渗透
                                                                是关键。                  
                                                                5、结晶粉结晶处理 
                                                                      粉与水的比例为1:1 配合白垫研磨至一定光度。 
                                                                6、中性(或微酸性)抛光膏的干抛结晶处理 
                                                                      做完粉剂结晶处理后,达到一定光度后,待干透5个小时或更长时间,开始采用晶面机配合
                                                                白垫、MS-120抛光膏做一次渗透型结晶处理,因抛光膏含有氧化硅、树脂,所以抛光膏更能提高石
                                                                材表面的硬度和清晰光泽度。