本公司9月18号09点15分报道：TCFS-25型低温弯折仪使用说明书@资料中心
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产品简介
YI、TCFS-25型低温弯折仪概述：
TCFS-25型低温弯折仪根据12953， GB/18173之规范设计制作。用于高分子防水材料的低温弯折试验。低温弯折仪由低温箱和弯折板配套使用。低温箱在0～-40℃之间自动调节，误差为±2℃，且能使试样在被操作过程中保持恒定温度，弯折板由金属平板、转轴和调节螺丝组成，平板间距可任意调节。
工作条件
二、TCFS-25型低温弯折仪试验条件：
1、试样尺寸120X50mm.
2、试样的停放时间和试验温度应按下列要求：
从试样制备到试验，时间为24h.试验室温度控制在（23±2）℃范围内。
三、TCFS-25型低温弯折仪高分子防水材料的试验方法：
1、 120X50mm的试件的迎水面朝外，弯曲180度，使50mm宽的边缘重合;齐平；并用定位夹或10mm宽的胶布将边缘固定以其在试验中不发生错位，。将弯折仪的两平板距离调到片材厚度的3倍。
2、将弯折仪上平板打开，将厚度相同的两块试样平放在底板上，重合的边朝向转轴，且距转轴20mm，在规定温度下保持1h，之后迅速压下上平板，达到所调间距位置，保持1s后将试样取出。待恢复到室温后观察试样弯折处是否断裂，或用放大镜观察试样弯折处受拉面有无裂纹。用8倍放大镜观察试样表面，以两个试样均无裂纹为合格
四、TCFS-25型低温弯折仪试验完毕将弯折仪表面处理干净擦涂防锈油脂以备下次使用。
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