墙面老是长白毛是什么原因

            墙面老是长白毛是什么原因
  批灰墙面有某个地方老是长白毛是为什么？就这个问题大多数业主是非常烦恼，深圳家庭装修公司，深圳博盛达装修公司就墙面长毛这问题发表一下自己的看法。
  墙面长毛就是碱性引起的，返碱产生的化学原理是：新水泥墙体碱性非常强，养护一段时间后有所降低。水泥中存在大量的碱离子（OH-）和钙、镁等活性离子，如果涂料施工前基层得不到充分的养护和封闭，涂层遇水后，渗透到基层水泥，活化了各种离子，使离子可以自由出入并迁移到涂膜表面，和空气中的CO，、水蒸气结合而生成碳酸盐的白色结晶体，造成返碱。
  解决方法：
  一、酸洗基层
  1 配置 5% ～ 10 % 的草酸溶液 ( 用 60 ℃温水调配 );
  2、将草酸溶液滚涂到墙面上 , 对墙体碱性进行充分中和 ;
  二、水洗基层
  1、用清水自上而下将墙面反复冲洗干净 ;
  2、视环境温度将基层干燥三天或更长时间 ;
  三、刮水泥腻子
  1、施工用腻子由黑水泥 ( ≥ 425 # ) 和白色填充料加入聚乙烯醇 (1799) 水溶液配得 ;
  2、腻子层要求批刮两道 , 每道腻子层干燥后均需打磨、除灰。而后及时进行冲水养护 ;
  3、养护后基层需视情况干燥十天或更长时间 ;
  四、刮外墙专用弹性腻子。
  如果批灰完工后，还出现长毛现象，刷涂料时须涂一遍抗碱底漆.
  深圳博盛达装饰专业承接：深圳厂房装修,深圳办公室装修,深圳装修,深圳博盛达装饰是一家专业的深圳装修公司,深圳装饰公司,深圳龙华装修公司,深圳龙岗装修公司。
  Wall always long white hair is what
   Pihui wall has long white hair is always somewhere Why? Most of the owners on this issue is very upset, home decoration company in Shenzhen, Shenzhen Bo Shengda hairy wall decoration company on this issue and my own views.
   The wall is the basic cause of the long-haired, salt on the chemical principle is: The new alkaline cement wall is very strong, the conservation period of time decreased. There are a lot of cement alkali ions (OH-) and calcium, magnesium and other active ions, if not fully paint before the construction of grassroots conservation and closed water after coating, penetrating to the grassroots cement, the activation of various ions, and the ions can freely migrate to the coating surface, and the air in the CO,, steam with the formation of carbonate of white crystals, causing back to base.
   Workaround:
   A pickling grassroots
   1 Configuration 5% to 10% oxalic acid solution (with 60 ℃ warm water allocation);
   2, the oxalic acid solution roll to the wall, the wall sufficiently alkaline neutralization;
   Two, washing grassroots
   1, from top to bottom the wall repeatedly with water rinse;
   2, depending on the ambient temperature will be three days or longer primary drying;
   Three, scraping cement putty
   1, the construction with putty from black cement (≥ 425 #) and white filler added to polyvinyl alcohol (1799) solution worthy;
   2, putty layer requirements Scraping two, each putty sanding is required after drying, ash. Then flush timely maintenance;
   3, after the grassroots conservation subject to availability drying ten days or longer;
   Four, scraping wall dedicated flexible putty.
   If Pihui Upon completion, the phenomenon also appeared hairy, paint brush alkali primer to be painted again.
   Shenzhen Bo Shengda Decorative Professional undertaking: Shenzhen plant decoration, office decoration, Shenzhen, Shenzhen, decoration, decorative, Shenzhen Bo Shengda is a professional decoration company in Shenzhen, Shenzhen decoration companies, decoration company in Shenzhen Longhua, Shenzhen Longgang decoration company.