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ZY-1006 Rubber Low Temperature Brittleness Testing Machine (Single Sample)
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ZY-1006 Rubber and Plastic Low Temperature Brittleness Testing Machine (Single Sample Method)
1. Features and uses:
The ZY-1006 rubber-plastic low-temperature brittleness testing machine is used to determine the highest temperature when the sample is damaged by impact under specified conditions, that is, the brittle temperature. It can be used for comparative evaluation of the performance of plastics and other elastic materials under low temperature conditions. . It can measure the brittleness temperature and low temperature performance of different rubber materials or different formulations of vulcanized rubber. Therefore, it is indispensable in the quality inspection of scientific research materials and products, and the control of the production process. This instrument is designed according to the GB/T1682-2014 standard.
2. Technical parameters
1. Test temperature and time: -75 degrees (normally more than 1 hour), the cooling time is short, no water cooling is required, and it is more environmentally friendly.
2. Cooling speed:
0℃ ~ -30℃ 1.2℃/min
-30℃ ~ -40℃ 1℃/min
-40℃ ~ -75℃ 0.7℃/min
3. Impact speed: 2m/s±0.2m/s
4. After the constant temperature, the temperature fluctuation is less than ±0.5℃, and the temperature control is more accurate.
5. Distance from the center of the impactor to the lower end of the holder: 11±0.5mm
6. Large size: 920×505×920mm (length×height×width)
7. Effective space of studio: 160×140×100mm (length×height×width)
8. Power: 2000w
Three, structure principle
1 Lifting gripper
The lifting clamp is composed of a cylinder with a clamp and a cylinder seat.
The distance from the impacted part of the sample to the lower end of the holder is 11.0±0.5mm.
2 impact device
The impact device consists of an impactor and an impact cylinder.
The weight of the impactor is 200±20g, and its working stroke is 40±1mm. When the impact cylinder is in the reset state, the distance from the end of the impactor to the sample is 25±1mm.
4 Refrigerating medium: industrial ethanol 5 This measuring instrument uses a compressor for direct cooling. No need to cool circulating water.
Four, use method
1 Turn on the power, the temperature controller and timer display lights are on.
2 Inject the freezing medium (usually industrial ethanol) into the cold well, and the amount of injection should ensure that the distance from the lower end of the holder to the liquid surface is 75±10mm.
3 Clamp the sample vertically on the holder. The clamp should not be too tight or too loose to prevent the specimen from deforming or falling off.
4 Press the holder to start freezing the sample, and at the same time start the timing control switch (or press the stopwatch) to time. The sample freezing time is specified as 3.0±0.5min. During the freezing of the sample, the temperature fluctuation of the freezing medium shall not exceed ±1℃.
5 Lift up the lifting clamp so that the impactor impacts the specimen within half a second.
6 Remove the sample, bend the sample to 180° according to the impact direction, and observe carefully for damage.
7 After the sample is impacted (each sample is only allowed to impact once), if damage occurs, the temperature of the freezing medium should be increased, otherwise the temperature should be lowered and the test should continue.
Through repeated tests, determine the minimum temperature at which no less than two samples will fail and the highest temperature at which no less than one sample will fail. If the difference between the two results is not more than 1°C, the test is over.
Five, test standards
1 Specifications: The length of the sample is 25.0±0.5mm, the width is 6.0±0.5mm, and the thickness is 2.0±0.3mm.
2 Requirements: The surface of the sample should be smooth, free of foreign impurities and damage. The finished product should be cut into corresponding size after grinding.
Six, matters needing attention
1. The cylinder pressure has been adjusted before leaving the factory and cannot be changed arbitrarily.
2. The compressor must be filled with alcohol before cooling.
3. The compressor needs to work more than 0.5 hours after shutdown, otherwise the compressor will be damaged
We could not find any corresponding parameters, please add them to the properties table
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