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How to test the resin content of FRP tank ?

Feb 26, 2019


For FRP storage tanks, everyone knows very well that it is a non-metallic composite tank made of resin and glass fiber wound by a microcomputer controlled machine. The content of the resin is a problem that many users pay attention to, so let's introduce the experimental steps of the resin content of the FRP tank.

(1) Preparation of samples shall be in accordance with the general provisions. When the thickness of the test material is less than 5 mm, the thickness of the sample is taken as the original thickness; when the thickness of the test material is greater than 5 mm, the original thickness is maintained, but the dimension in other directions is equal to or less than 5 mm.

(2) The appearance inspection of the sample shall be in accordance with the general provisions.

(3) The sample is wiped with a soft cloth dampened with solvent and then treated for 1 time in the drying chamber for 24 h; dried at 280 ° C for 2 h and placed in a desiccator to cool to room temperature;

(4) Heat the crucible in a 600±20°C Maofu furnace for 10~20min, then place it in a desiccator, cool to room temperature, and weigh it to the nearest 0.1mg.

(5) The prepared sample is placed in a crucible for weighing to the nearest 0.1 mg;

(6) Put the sample containing the crucible into the furnace to burn: 1 heat up to 350~400 °C, about half an hour, 2 heat up to 600±20 °C until all the carbon in the sample disappears. At this time, epoxy and polyester FRP take about 30 minutes, and phenolic FRP takes 90 to 120 minutes.

(7) The crucible with the residue was taken out from the Moff furnace, cooled in a desiccator and weighed to the nearest 0.1 mg.

(8) Repeat the burning, constant temperature, cooling, weighing, and know that the weighing result is not worse than 1 mg.

The above is the experimental procedure for the detection of resin content in FRP tanks, and I hope to be helpful to everyone.