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Official Journal of the Japan Wood Research Society

Table 1 Conditions and parameters of THM process

From: Effect of thermo-hydro-mechanical densification on microstructure and properties of poplar wood (Populus tomentosa)

Process steps

Parameters

Treatment samples

CR50

CR60

CR70

CR75

Pre-heating

Temperature (°C)

160

160

160

160

Pressure (MPa)

0

0

0

0

Duration (min)

10

10

10

10

Compressing

Temperature (°C)

160

160

160

160

Maximum pressure (MPa)

4

5.5

8

12

Duration (min)

8

10

12

14

Annealing

Temperature (°C)

160

160

160

160

Pressure (MPa)

4

5.5

8

12

Duration (min)

20

20

20

20

Cooling

Temperature (°C)

50

50

50

50

Pressure (MPa)

4

5.5

8

12

Duration (min)

15

15

15

15

  1. THM thermo-hydro-mechanical, CR compression ratio