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Test report on artificial graphite

Categories:Artificial Graphite Applications
Time of issue:2020-06-16 00:00:00
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Description:

Information

Test Project

1. Graphite sheet appearance inspection

2. Graphite sheet heat dissipation performance measurement

Graphite Sheet Visual Inspection

Test method: Visually inspect the graphite sheet appearance in a bright environment.

Bubbles, Highlights, Hardpoints

Graphite heat dissipation performance test

Test Method：

1. Two circular samples of 25 mm diameter cut from a graphite sheet using a jig.

2. Measure its thickness (micrometer); weight (electronic scale) and calculate its density.

3. Cut 2 round samples from the same graphite sheet and insert them simultaneously into the laser thermal conductivity meter (NETZSCH, Germany). (LFA 467) Measure the jig and hold it flat, measure the thermal diffusion coefficient of the sample and calculate the thermal conductivity.

Test Results:

No.	Thickness(mm)	Mass (g)	Density g/cm3	Thermal diffusion coefficient mm2/s	*Thermal conductivity w/(mk)**
1-1	0.026	0.0218	1.709	836	1266
1-2	0.024	0.0218	1.851	837	1267
2-1	0.026	0.0219	1.717	843	1276
2-2	0.025	0.0218	1.777	848	1280
3-1	0.024	0.0221	1.877	855	1293
3-2	0.026	0.0223	1.748	850	1286
AVER	0.025	0.0220	1.778	845	1278

Test results：

Visual inspection of the measured artificial graphite flakes

1.Products with hard points

2. bubbles on the surface of the product, more highlights

Conclusion: Poor appearance

Measurement of heat dissipation performance of artificial graphite sheet

The thermal diffusion coefficient of the three samples was measured in the range of 830-850 mm2/s, with low values.

The thermal conductivity of the three samples is 1200-1300w/(m*k), which is lower than that of 25u sheet in the industry. Average value 1300-1600w/(m*k)

Conclusion: heat dispersion data and thermal conductivity values are low and below the industry average

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Products

Artificial Graphite

Natural graphite

Thermal insulation ceramics

Coating of adhesive products

Aerogel

Contact

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Tel：0512-66939426

Fax：0512-66234776

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