本公司9月18號09點15分報道：TCFS-25型低溫彎折儀品牌廠家@采購資訊
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產品簡介
YI、TCFS-25型低溫彎折儀概述：
TCFS-25型低溫彎折儀根據12953， GB/18173之規范設計制作。用于高分子防水材料的低溫彎折試驗。低溫彎折儀由低溫箱和彎折板配套使用。低溫箱在0～-40℃之間自動調節，誤差為±2℃，且能使試樣在被操作過程中保持恒定溫度，彎折板由金屬平板、轉軸和調節螺絲組成，平板間距可任意調節。
工作條件
二、TCFS-25型低溫彎折儀試驗條件：
1、試樣尺寸120X50mm.
2、試樣的停放時間和試驗溫度應按下列要求：
從試樣制備到試驗，時間為24h.試驗室溫度控制在（23±2）℃范圍內。
三、TCFS-25型低溫彎折儀高分子防水材料的試驗方法：
1、 120X50mm的試件的迎水面朝外，彎曲180度，使50mm寬的邊緣重合;齊平；并用定位夾或10mm寬的膠布將邊緣固定以其在試驗中不發生錯位，。將彎折儀的兩平板距離調到片材厚度的3倍。
2、將彎折儀上平板打開，將厚度相同的兩塊試樣平放在底板上，重合的邊朝向轉軸，且距轉軸20mm，在規定溫度下保持1h，之后迅速壓下上平板，達到所調間距位置，保持1s后將試樣取出。待恢復到室溫后觀察試樣彎折處是否斷裂，或用放大鏡觀察試樣彎折處受拉面有無裂紋。用8倍放大鏡觀察試樣表面，以兩個試樣均無裂紋為合格
四、TCFS-25型低溫彎折儀試驗完畢將彎折儀表面處理干凈擦涂防銹油脂以備下次使用。
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