墻面老是長白毛是什么原因

            墻面老是長白毛是什么原因
  批灰墻面有某個地方老是長白毛是為什么？就這個問題大多數業主是非常煩惱，深圳家庭裝修公司，深圳博盛達裝修公司就墻面長毛這問題發表一下自己的看法。
  墻面長毛就是堿性引起的，返堿產生的化學原理是：新水泥墻體堿性非常強，養護一段時間后有所降低。水泥中存在大量的堿離子（OH-）和鈣、鎂等活性離子，如果涂料施工前基層得不到充分的養護和封閉，涂層遇水后，滲透到基層水泥，活化了各種離子，使離子可以自由出入并遷移到涂膜表面，和空氣中的CO，、水蒸氣結合而生成碳酸鹽的白色結晶體，造成返堿。
  解決方法：
  一、酸洗基層
  1 配置 5% ～ 10 % 的草酸溶液 ( 用 60 ℃溫水調配 );
  2、將草酸溶液滾涂到墻面上 , 對墻體堿性進行充分中和 ;
  二、水洗基層
  1、用清水自上而下將墻面反復沖洗干凈 ;
  2、視環境溫度將基層干燥三天或更長時間 ;
  三、刮水泥膩子
  1、施工用膩子由黑水泥 ( ≥ 425 # ) 和白色填充料加入聚乙烯醇 (1799) 水溶液配得 ;
  2、膩子層要求批刮兩道 , 每道膩子層干燥后均需打磨、除灰。而后及時進行沖水養護 ;
  3、養護后基層需視情況干燥十天或更長時間 ;
  四、刮外墻專用彈性膩子。
  如果批灰完工后，還出現長毛現象，刷涂料時須涂一遍抗堿底漆.
  深圳博盛達裝飾專業承接：深圳廠房裝修,深圳辦公室裝修,深圳裝修,深圳博盛達裝飾是一家專業的深圳裝修公司,深圳裝飾公司,深圳龍華裝修公司,深圳龍崗裝修公司。
  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.