Density of Rubber
Contents
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There are three way find Density of Rubber
- Pycnometer (Density bottle)
- Dimension (mass/volume)
- Balance Pan straddle
- Pyknometer ( Density bottle )
Apparatus
- Pycnometer (Density bottle)
- Analytical Balance
Reagent
- Distilled water
Procedure
- Cut piece rubber sample
- Weight at least 2.5 gm
- weight of density bottle, cut piece sample and water ( Use hot water )
- weight of Density bottle and water
Calculation
Density of rubber (g/cm³) = M1 / M3 – M2 + M1
= 2.5234 / 44.7098 – 45.4444 + 2.5234
= 1.41 g/cm³
where
- M1 – Weight of sample
- M2 – Weight of Density bottle,sample and water
- M3 – Weight of density bottle and water
2. Dimension (mass/volume)
Apparatus
- Vernier Scale
- Thickness gauge
- Analytical Balance
Procedure
- Cut sample
- weight of sample in gm
- measure length in cm
- measure width in cm
- measure thickness in cm
Calculation
Density of rubber (g/cm³) = Mass / Volume = Mass / l*b*h
= 2.9293 / 3.146*1.154*0.573
= 1.41 g/cm³
3. Balance Pan straddle
Apparatus
- Analytical Balance
Reagent
- Distilled water
Procedure
- Cut sample
- Tare Analytical balance (after setup see pic)
- weight of sample in air (gm)
- weight of sample in water (gm)
Calculation
Density of rubber (g/cc) = M1 / M1 – M2
= 2.9291 / 2.9291 – 0.8608
= 1.41 g/cc
where
- M1 – Weight of sample in air
- M2 – Weight of sample in water
Reference – IS 3400 part- 9 – Method for Determination density of Rubber materials