Carbon black content meter using method and steps - Database & Sql Blog Articles

Carbon black content analyzer is based on the "Industrial Standards of the People's Republic of China"

JTGE-50

Developed in the "Carbon Black Content Test (Heat Loss)" in the "Testing Procedures for Geosynthetics". The instrument is suitable for the length of carbon black in polyethylene, polypropylene and polybutylene plastics. The carbon black test was carried out by weight analysis of the sample under high temperature decomposition under nitrogen protection. The instrument has the advantages of convenient use, simple operation, reliable operation, accurate measurement and automatic temperature control.

Scope of application:

Carbon black content test device is applicable to GB/T2951.41 "Test methods for insulation and sheathing materials for cables and cables, Part 41, Test methods for polyethylene and polypropylene mixtures - Determination of carbon black and mineral fillers in polyethylene - The Direct Combustion Method standard is used when a polyethylene or PVC cable is required for a low temperature winding test. Equivalent to the IEC60811-4-1 standard.

Technical Parameters:

1. Effective length and pipe diameter of tubular heating furnace: 400* diameter 40m

2, quartz tube inner diameter and length: diameter 30 * 500mm

3, nitrogen (air) flow: 0-3L / min adjustable

4, oxygen (air) flow: 0-3L / min adjustable

5, heating furnace output temperature: 0-1000 degrees Celsius (heated at the standard rate)

6, heating furnace input power: 220V 3KW

7. Test standard: GB13021-1991 GB/T2951.41-2008

Method / Step:

1. Heat the combustion boat to the hot, then cool it in the dryer for at least 30 minutes, weigh it, to the nearest 0.0001 g, put the (1.0 ± 0.1) g polyethylene sample into the combustion boat, and weigh together, accurate To 0.0001 g, the weight of the burning boat was subtracted from the weight to obtain a weight A of the polyethylene sample, accurate to 0.0001 g.

2. First place the combustion boat containing the sample into the middle of the quartz tube of the heating furnace, then insert a rubber plug of a vented glass tube into one end of the glass combustion tube, and adjust the atmosphere device to make the oxygen content less than 0.5%. Nitrogen is passed through the quartz tube at the desired flow rate and maintained at this rate during subsequent heating.

3. Move the combustion boat to the mouth of the instrument, do not remove it immediately; after the boat is cooled down slightly in nitrogen, take out the combustion boat, then cool it in the dryer for 20-30min, and re-weigh it, minus the burning boat. Weight, the weight of the residue was determined to be accurate to 0.0001 g (residue weight B).

4. Place the burning boat on the glass burning tube. Adjust the atmosphere device in step 4. Pass the oxygen instead of nitrogen to the quartz tube in the glass burning tube at an appropriate flow rate to completely burn the residual carbon black. The combustion boat was taken out and cooled, and the weight of the combustion boat was subtracted, and the weight of the residue was measured to be accurate to 0.0001 g (residue weight C).

5. Test results representation method:

Carbon black content = (BC) / A

×

100%

Mineral filler content = C / A

×

100%

Filler content = B / A

×

100%

A--sample weight;

B--the weight of the residue after pyrolysis

C--weight of residue after combustion

1,

Turn on the computer, go online with the instrument, click "

Yes

", go online. Go to the following interface.

2. Set the temperature according to the specifications. After the temperature reaches the set time, the computer will give a prompt, take out the burning boat, weigh it, and the test is over.