腾达试验仪器厂：

　　防水卷材低温弯折仪是**检测仪器，用于高分子卷材和防水涂料的低温弯折性试验；也适合防水涂料的低温柔性测定。使用前务必仔细阅读说明书。并由**实验人员操作，以避免操作不当引起的伤害。如需了解更多资料请与我公司客服人员联系。

　　The low-temperature bending tester of waterproof coil is a testing instrument for low-temperature bending test of polymer coils and waterproof coatings.It is also suitable for low-temperature flexibility measurement of waterproof coatings.Be sure to read the instructions carefully before use.It is operated by**experimental personnel to avoid injury caused by improper operation.For more information,please contact our customer service staff.

　　DW-120防水卷材低温弯折仪构成：

　　弯折仪主要由金属材料制成的上、下平板，转轴和调距螺杆组成。

　　平板间距可任意调节

　　试件尺寸：100*50mm；

　　弯折角度：180°；

　　DW-120 waterproof coil bending instrument composition:

　　The bending instrument is mainly composed of upper and lower flat plates made of metal materials,a rotating shaft and a pitch adjusting screw.

　　Plate spacing can be adjusted arbitrarily

　　Test piece size:100*50mm;

　　Bending angle:180°;

　　DW-120防水卷材低温弯折仪使用方法：

　　★在标准环境下，用规定的测厚仪(厚度计)测量试样的厚度。

　　★在试样的横向和纵向各取100×50/50×100mm的试样两块。

　　★将试样的的耐厚秒年朝外，弯曲180°，使50mm宽的边缘重合，齐平，并确保不发生错位，(可用定位夹或10nn宽的胶布将边缘固定)。

　　★将弯折仪的上下两平板间距调到被测卷材的三倍后，再将弯折仪上下平板翻开，将同一方向的两块试样放在弯折仪的下平板上，重合的一边朝向转轴并与刻度线防齐。

　　★整体防入低温箱内，在规定温度下保持1h,然后1S之内将上平板翻下到所调的间距位置，保持1S后，取出试样。

　　★恢复到室温后，观察试样弯折处是否断裂，或用放大观察试样弯折处受拉面是否有裂纹

　　★低温弯折仪四、结构评定

　　★两块试验均不断裂或无断纹时，评定为无断裂。

　　★注(1)以**标准GB12592-2003(聚氯乙烯防水材料)为例。其他材料使用方法应参其相应**标准或行标中的试验方法进行。

　　How to use DW-120 waterproof coil low temperature bending instrument:

　　★In a standard environment,use a specified thickness gauge(thickness gauge)to measure the thickness of the sample.

　　★Take two samples of 100×50/50×100mm each in the horizontal and vertical directions of the sample.

　　★Bend the thickness of the sample outwards for 180 seconds,make the edges of 50mm width coincide,flush,and ensure that no misalignment occurs(the positioning edge or 10nn wide tape can be used to fix the edges).

　　★After adjusting the distance between the upper and lower plates of the bender to three times the measured coil,turn the upper and lower plates of the bender and place the two samples in the same direction on the lower plate of the bender and overlap.The side facing toward the axis of rotation is aligned with the tick mark.

　　★Prevent the whole from entering the low temperature box,keep it at the specified temperature for 1h,and then turn the upper plate down to the adjusted distance within 1S,and hold the sample for 1S.

　　★After returning to room temperature,observe whether the bending part of the sample is broken,or use magnification to observe whether the tensile surface of the sample bending part is cracked.

　　★Low Temperature Bending Instrument

　　★When neither test is broken or broken,it is evaluated as no break.

　　★Note(1)Take**standard GB12592-2003(polyvinyl chloride waterproof material)as an example.The use of other materials should be carried out in accordance with the test methods in their respective standards or standards.