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class="xypg-left-box xypg-left-contact"> <div class="xypg-left-title"> <h3>聯系我們<span>Contact Us</span></h3> </div> <div class="xypg-left-con"> <div class="page-wrap-contact"> <h4>南昌天高環?？萍脊煞萦邢薰?/h4> <p>電話：17770087478-鄭經理</p><p>傳真：0791-86690255</p><p>網址：江西省南昌市昌北經濟技術開發區天高工業園</p><p><br/></p> </div> </div> </div> </div> </div> <div class="page-wrap-right"> <div class="xypg-right-content">  <div class="news_detail"> <h1 class="title">鈉基膨潤土遇水時吸附自身重量五倍的水</h1> <div class="info_title clearfix"> <h3 class="title_bar"> 發布日期：<span>2019-03-29</span> 作者：<span>南昌天高</span> 點擊：<span><script src="http://www.permaculturegreenhouse.com/data/include/newshits.php?id=539"></script></span> </h3> <div class="share">  <div class="bdsharebuttonbox"> <a href="#" class="bds_more" data-cmd="more"></a> <a href="#" class="bds_qzone" data-cmd="qzone"></a> <a href="#" class="bds_tsina" data-cmd="tsina"></a> <a href="#" class="bds_tqq" data-cmd="tqq"></a> <a href="#" class="bds_renren" data-cmd="renren"></a> <a href="#" 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16px;">復合土工膜簡單的來講就是在水利工程中起到防滲、襯墊的作用，不同的水利工程選擇復合土工膜的規格也不一樣，一般情況復合土工膜規格的選擇與下墊層平整度、材料允許拉應力、材料彈性模量、鋪設范圍內的Z大水頭及覆蓋層Z大粒徑等有關，其厚度設計除考慮主要由水壓力要求的強度外，還需考慮暴露、埋壓、氣候、使用壽命等應用條件，并按國家現行有關標準的規定確定設計厚度及實際厚度。膨潤土防水毯中的土一定要選擇鈉基的，這主要是因為鈉基膨潤土遇水時吸附自身重量五倍的水，體積膨脹到原來的15-17倍以上，將鈉基膨潤土鎖在兩層土工合成材料中間，起保護和加固的作用，使GCL具有一定的整體抗剪強度。因此膨潤土防水毯中的土多選擇鈉基膨潤土顆粒，并且鈉基膨潤土的顆粒選擇東北建平縣的為Z好，這主要是因為建平鈉基膨潤土制造成膨潤土防水毯后，防滲系數高，防滲襯砌效果好。一般為是無毒、無味、無臭的白色顆粒，熔點約為110℃-130℃，相對密度0.918—0.965；防滲膜具有良好的耐熱性和耐寒性?；瘜W穩定性好，具有較高的剛性和韌性，機械強度好，耐環境應力開裂與耐撕裂強度性能好，隨著密度的上升，機械性能和阻隔性能會相應提高，耐熱，和抗拉強度也更高；可耐酸、堿、有機溶劑等腐蝕。</span></p></div> <h3 class="tag">相關標簽： </h3> <div class="page">上一篇：<a href="http://www.permaculturegreenhouse.com/news/538.html">土工膜可以作用于干旱地區嗎</a><br />下一篇：<span><a href="http://www.permaculturegreenhouse.com/news/541.html">玻璃纖維格柵的特點及用途</a></span></div> </div> </div> </div> <div class="page-mob-tool"> <ul> <li class="xymob-page-navbtn"><i class="icon-font icon-dots-horizontal"></i></li> <li class="xymob-page-backtop"><i class="icon-font icon-top"></i></li> </ul> 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