Petroleum asphalt kinematic viscometer

Product Introduction

1Petroleum asphalt kinematic viscometerPurpose and Scope of Application

1.This method is applicable for determining the kinematic viscosity of viscous petroleum asphalt, liquid petroleum asphalt, and their distilled residues using a capillary viscometer.

2.Unless otherwise specified, the test temperature is135℃ (viscous petroleum asphalt) and60℃ (liquid petroleum asphalt). To obtain the viscosity temperature curve of viscous petroleum asphalt at high temperatures and determine the equivalent viscosity temperature as the construction temperature, it is advisable to use120℃150℃180℃ is used as the experimental temperature.

IIPetroleum asphalt kinematic viscometerMain technical parameters

1Temperature control range: room temperature——200℃

2Temperature control accuracy: ±0.1℃

3Heating power: auxiliary heating,1000 WTemperature controlled heating.600W

4Working voltage:220V

IIIinstrumentation

1Turn on the power switch.

2Set the temperature and adjust the required temperature for the test according to the up arrow or down arrow on the instrument.

3Turn on the temperature control heating switch and auxiliary heating switch in sequence.

4Wait for the temperature to rise below the set temperature10Around ℃, turn off the auxiliary heating switch, and the instrument will automatically control to the set temperature.

4、 Method and steps

1.preparation

（1）Estimate the viscosity of the sample based on the time it takes for the sample to flow through the specified volume of the capillary tube60sChoose the model of the viscometer.

（2）Wash the viscometer thoroughly with solvents such as trichloroethylene. If the viscometer is contaminated with oil, it should be carefully washed with detergent, distilled water, or ethyl alcohol. Temperature after washing105℃±5Dry in an oven at ℃, or blow dry with hot air filtered through cotton, and then preheat to the required measurement temperature.

（3）Mix the liquid asphalt thoroughly at room temperature30min,Be careful not to introduce air to form bubbles. If the viscosity of the liquid asphalt is too high, the sample can be placed60℃±3Heating in an oven at ℃30minAccording to this regulationT0602Prepare viscous asphalt samples, heat them evenly and place them within ±5Pour into a small sample container after reaching ℃, with a volume of no less than20mLAnd cover it with a lid.

（4）Adjust the liquid level and temperature of the constant temperature water bath or oil bath to maintain the test temperature ±0.1℃.

2.Experimental steps

（1）Preheat the viscometer to the test temperature and remove it vertically inverted to make the capillary tubeNImmerse the asphalt sample through a rubber tube. In the managementLConnect a rubber ball (water flow pump) to the mouth of the tube to suck in air, allowing the sample to pass through the capillary tubeNbe filled withDThe ball is filled toGAfter that, clamp it with a clipNRemove the rubber tube from the tubeNPipe and quickly wipe dryNAttach the sample to the outside of the pipe mouth and reverse the viscometer to its normal position. Then clamp it tightly with a clipLA rubber tube with a rubber ball attached.

（2）Move the viscometer into a constant temperature water bath or oil bath (test temperature ±)01.In (℃), use a rubber clip toNClamp and fix the tube, and makeLKeep the pipe vertical. Note that during clamping,DThe ball must be submerged in water or oil20mmabove.

（3）RelaxLClamp the tube to allow the sample to flow inAWhen the ball reaches halfway, clamp the clamp and stop the flow of the sample. Then keep warm in a constant temperature bath30minAfterwards, relaxLTube clamp, allowing the sample to flow by gravity. When the meniscus of the sample reaches the marked lineEStart the stopwatch when the sample liquid level passes through the marked lineFreachJRead the stopwatch and record the flow of the sample through the markers separatelyEarriveFandFarriveJThe time, accurate to0.1sIf the flow time of the sample is less than60sWhen doing so, you should choose another viscosity meter with a smaller capillary diameter and repeat the above operation.

Please refer to the experimental method《JTJ052-2000》Highway asphalt and asphalt testing regulations

T 0619——1993.