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部分石材的研磨與晶面處理時(shí)特別注意事項(xiàng)

作者:管理員 發(fā)表時(shí)間:2015-1-26 17:10:53 閱讀:
                                                                              
                                                                本文部分石材是指:木紋石、白沙米黃、沙漠風(fēng),雅士白、砂巖等石材 
                                                                1、給足水泥養(yǎng)護(hù)干透期,不可迅速勾縫補(bǔ)膠 
                                                                      地面石材通常采用水泥濕式鋪貼,由于趕工,安裝完后沒等水泥完全固化、水泥中的堿份
                                                                沒有完全透出,就開始切縫、將石材拼縫采用云石膠或其他流質(zhì)樹脂膠封閉,開始整體研磨,這
                                                                樣進(jìn)一步堵住了石材底部水泥中水堿份的透出管道,使得水堿被逼至石材孔隙、裂隙最大的地方
                                                                反滲透出來,造成石材表面析出的白色的鹽堿斑,或者裂隙處的黑色水泥印。所以,石材鋪貼完
                                                                后,不要急于補(bǔ)膠和研磨。 
                                                                2、干磨 
                                                                      由于木紋石、白沙米黃、沙漠風(fēng),砂巖、雅士白毛孔大和含鐵量高,若一直采用水磨到底,
                                                                這樣會(huì)加快石材的吸水速度,量、從而揮發(fā)慢,使得石材吸入大量水分,更容易返堿和使得水分與
                                                                石材(雅士白、沙漠風(fēng))里的鐵產(chǎn)生氧化反應(yīng),生成新的黃銹斑。所以,采用干磨,使石材不再因
                                                                研磨吸收更多水分。 
                                                                3、細(xì)磨后的防護(hù)處理 
                                                                      細(xì)磨片(塊)打磨后,做次有機(jī)氟防護(hù)劑涂布,待干透24小時(shí)。采用拋光磨片(塊)高速
                                                               (磨盤轉(zhuǎn)速800轉(zhuǎn)/分)水拋。這樣為滿足石材出光效果。特別是木紋石、雅士白較難出光需采用拋
                                                                光片(塊)高速水拋。白沙米黃、沙漠風(fēng)、砂巖等做防護(hù)后低速拋光即可。     
                                                                4、磨塊拋光后結(jié)晶處理前再次防護(hù)處理 
                                                                      磨塊(精磨)拋光后,開始做結(jié)晶處理前,再做一次防護(hù)處理,更有效縮小石材的毛孔和
                                                                裂隙。因?yàn)槊状蟮氖脑谧鼋Y(jié)晶粉的結(jié)晶處理研磨時(shí),介質(zhì)水很容直接滲透,即水和粉的混合物
                                                                酸化劑不能懸浮于石材表面在白墊與地面之間摩擦產(chǎn)生熱能的作用下與石材產(chǎn)生充分物理、化學(xué)反
                                                                應(yīng)而形成新的結(jié)晶層,所以,做再次防護(hù)處理,縮小石材毛細(xì)孔,使結(jié)晶(劑)粉、水不直接滲透
                                                                是關(guān)鍵。                  
                                                                5、結(jié)晶粉結(jié)晶處理 
                                                                      粉與水的比例為1:1 配合白墊研磨至一定光度。 
                                                                6、中性(或微酸性)拋光膏的干拋結(jié)晶處理 
                                                                      做完粉劑結(jié)晶處理后,達(dá)到一定光度后,待干透5個(gè)小時(shí)或更長(zhǎng)時(shí)間,開始采用晶面機(jī)配合
                                                                白墊、MS-120拋光膏做一次滲透型結(jié)晶處理,因拋光膏含有氧化硅、樹脂,所以拋光膏更能提高石
                                                                材表面的硬度和清晰光澤度。