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橡胶低温脆性试验仪

防水材料低温冲击试验机各项技术指标符合GB/T 1682-1994硫化橡胶低温脆性单试样法等国家标准的要求。本仪器再原有设计中,增加了冷井搅拌器,使容器四周温度更均匀,下降温度更快,节约时间,降低了能耗。

  • 型号:DWCJ-70

  • 产品参数
  • 型号:DWCJ-70

 

橡胶低温脆性试验仪符合HG2-162-1965塑料低温冲击压缩试验方法和GB5470-2008塑料冲击脆化温度试验方法等国家标准。橡胶、塑料、防水卷材在规定条件下试样受冲击出现破坏时的A高温度,即为脆性温度,可以对塑料及其他弹性材料在低温条件下的使用性能作比较性鉴定。可以测定不同橡胶材料或不同配方的硫化橡胶的脆性温度和低温性能的优劣。

The waterproof material low-temperature impact testing machine complies with HG2-162-1965 plastic low-temperature impact compression test method and GB5470-2008 plastic impact embrittlement temperature test method and other national standards. The high temperature of rubber, plastic and waterproof coiled material under the specified conditions when the specimen is damaged by impact is the brittle temperature, which can be used to compare the performance of plastic and other elastic materials under low temperature conditions. The brittle temperature and low temperature properties of vulcanized rubbers of different rubber materials or different formulations can be determined.

 

橡胶低温脆性试验仪各项技术指标符合GB/T 1682-1994硫化橡胶低温脆性单试样法等国家标准的要求。本仪器再原有设计中,增加了冷井搅拌器,使容器四周温度更均匀,下降温度更快,节约时间,降低了能耗。

The technical indicators of the waterproof material low-temperature impact testing machine meet the requirements of GB/T 1682-1994 vulcanized rubber low-temperature brittle single-sample method and other national standards. In the original design of the instrument, the cold well agitator was added to make the temperature around the container more uniform, lower the temperature faster, save time and reduce energy consumption.

 

橡胶低温脆性试验仪技术参数

试验温度:-70℃

冲击速度:2m/s±0.2m/s

恒温后,试验3min时间内温度波动:<±0.5℃

冲击器中心到夹持器下端距离:11±0.5mm

外型尺寸:720×700×1380mm

功率:1100W

冷井容积:3L

重量:120kg

Waterproof material low temperature impact testing machine technical parameters
★ Test temperature: -70 ° C
★ Impact speed: 2m / s ± 0.2m / s
★ After constant temperature, the temperature fluctuation during the test within 3 minutes: <±0.5°C
★ Distance from the center of the impactor to the lower end of the holder: 11±0.5mm
★Outer size: 720×700×1380mm
★ Power: 1100W
★ Cold well volume: 3L
★ Weight: 120kg

 

橡胶低温脆性试验仪结构原理

升降夹持器

升降夹持器由带有夹持器的气缸和气缸座组成。

从试样受冲击部位,到夹持器下端的距离为11.0±0.5mm

冲击装置

冲击装置由弹簧器和冲头组成。

冲击器

冲击器头部形状和尺寸。冲击器的重量为200±20g,其工作行程为40±1mm。冲击气缸在复位状态下,冲击器端部到试样的距离为25±1mm。

Structural principle of waterproof material low temperature impact testing machine
★ Lifting clamp
The lift gripper consists of a cylinder with a gripper and a cylinder block.
The distance from the impacted part of the specimen to the lower end of the holder is 11.0±0.5mm.
★ Impact device
The impact device consists of a spring and a punch.
★ Impactor
Impactor head shape and size. The impactor has a weight of 200 ± 20 g and a working stroke of 40 ± 1 mm. In the reset state of the impact cylinder, the distance from the end of the impactor to the sample is 25 ± 1 mm.

 

橡胶低温脆性试验仪使用方法

接通电源,温控仪和计时器显示灯亮。

向冷井中注入冷冻介质(一般为工业乙醇),其注入量应保证夹持器的下端到液面的距离为75±10mm。

将试样垂直夹在夹持器上。夹的不宜过紧或过松,以防止试样变形或脱落。

按下夹持器,开始冷冻试样,同时启动时序控制开关(或按动秒表)计时。试样冷冻时间规定为3.0±0.5min。试样冷冻期间,冷冻介质温度波动不得超过±1℃。

提起升降夹持器,使冲击器在半秒钟内冲击试样。

取下试样,将试样按冲击方向弯曲成180°,仔细观察有无破坏。

试样经冲击后(每个试样只准冲击一次),如出现破坏时,应提高冷冻介质的温度,否则降低其温度,继续进行试验。

通过反复试验,确定至少有两个试样不破坏的A低温度和至少一个试样破坏的A高温度,如这两个结果相差不大于1℃时,即试验结束。

Waterproof material low temperature impact testing machine
★ Turn on the power, and the temperature controller and timer display lights.
★ Inject cold medium (usually industrial ethanol) into the cold well, and the injection amount should ensure that the distance from the lower end of the holder to the liquid surface is 75±10mm.
★ Clamp the specimen vertically on the holder. The clip should not be too tight or too loose to prevent the sample from deforming or falling off.
★ Press the gripper to start freezing the sample and start the timing control switch (or press the stopwatch) to time. The freezing time of the sample was specified to be 3.0 ± 0.5 min. During the freezing of the sample, the temperature of the freezing medium should not exceed ±1 °C.
★ Lift the lift gripper so that the impactor impacts the specimen within half a second.
★ Remove the sample and bend the sample to 180° in the direction of impact. Observe the damage carefully.
★After the impact of the sample (only one impact per sample), if there is damage, the temperature of the freezing medium should be increased, otherwise the temperature will be lowered and the test will continue.
★ Through repeated tests, determine the low temperature of A where at least two samples are not destroyed and the high temperature of A destroyed by at least one sample. If the difference between these two results is not more than 1 °C, the test is over.


橡胶低温脆性试验仪

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