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Results of Testing the Physical Properties of the Test Board
Property

Unit

Requirement

Result

Modulus of rupture (MOR) after preconditioning

MPa

≥ 17.2 average

42.6 average

MPa

≥ 13.8 individual

34.2 individual

Modulus of elasticity (MOE) after preconditioning

MPa

≥ 3 100 average

5 226 average

MPa

≥ 2 480 individual

4 027 individual

Internal bond after preconditioning

MPa

≥ 0.345 average

0.935 average

MPa

≥ 0.276 individual

0.838 individual

Bond durability - MOR after 2-h boil (tested when wet)

MPa

≥ 8.6 average

22.4 average

MPa

≥ 6.9 individual

18.0 individual

Bond durability - MOR after six cycles

MPa

≥ 8.6 average

32.0 average

MPa

≥ 6.9 individual

23.9 individual

Thickness swell: 24-h soak

%

≤ 25 average

3.8 average

%

≤ 30 individual

4.4 individual

Linear expansion: oven-dry to saturated

%

≤ 0.40 average

0.26 average

%

≤ 0.48 individual

0.30 individual

Linear expansion: 50% to 90% relative humidity (RH)

%

≤ 0.20 average

0.10 average

%

≤ 0.24 individual

0.11 individual

Results of Testing the Creep Properties at 20°C

Property

Unit

Requirement

Result

Cumulative creep

mm

≤ 1.7 average

1.0 average

≤ 2.04 individual

1.14 individual

Secondary creep

mm

≤ 0.4 average

0.2 average

≤ 0.48 individual

0.28 individual

Irrecoverable creep

mm

≤ 1.1 average

0.6 average

≤ 1.32 individual

0.66 individual

Results of Testing the Creep Properties at 30°C

Property

Unit

Requirement

Result

Cumulative creep

mm

≤ 2.2 average

0.9 average

≤ 2.64 individual

1.09 individual

Secondary creep

mm

≤ 0.4 average

0.1 average

≤ 0.48 individual

0.15 individual

Irrecoverable creep

mm

≤ 1.5 average

0.5 average

≤ 1.8 individual

0.66 individual

Results of Testing the Creep Properties at Higher Ambient Temperature

Property

Unit

Requirement

Result

Cumulative creep

%

≤ 35 average

−9 average

≤ 42 individual

−5 individual

Secondary creep

%

≤ 0 average

−46 average

≤ 0 individual

−41 individual

Irrecoverable creep

%

≤ 50 average

−9 average

≤ 60 individual

0 individual

Results of Testing the MOR Retention Properties of the Products

Property

Unit

Requirement

Result

Exposure after 2-h boil (modified)

MPa

≥ 8.6 average

40.1 average

≥ 6.9 individual

30.2 individual

Exposure after six-cycle test

MPa

≥ 8.6 average

32.0 average

≥ 6.9 individual

23.9 individual

At −20°C

MPa

≥ 17.2 average

49.8 average

≥ 13.8 individual

36.9 individual

After fungal exposure: Aspergillus niger vs. Teigh

MPa

≥ 13.8 average

46.2 average

≥ 11.0 individual

36.1 individual

After fungal exposure: Penicillium luteum

MPa

≥ 13.8 average

42.7 average

≥ 11.0 individual

30.0 individual

After soaking in 1% hydrochloric acid

MPa

≥ 7.7 average

26.2 average

≥ 6.2 individual

17.8 individual

After soaking in 1% sodium hydroxide

MPa

≥ 12.0 average

29.9 average

≥ 9.6 individual

25.8 individual

After soaking in water

MPa

≥ 14.6 average

34.9 average

≥ 11.7 individual

24.6 individual

Results of Testing the MOE Retention Properties of the Products

Property

Unit

Requirement

Result

Exposure after 2-h boil (modified)

MPa

≥ 1 550 average

5 123 average

≥ 1 240 individual

4 275 individual

Exposure after six-cycle test

MPa

≥ 2 015 average

4 523 average

≥ 1 612 individual

4 027 individual

At −20°C

MPa

≥ 3 100 average

5 771 average

≥ 2 480 individual

4 950 individual

After fungal exposure: Aspergillus niger vs. Teigh

MPa

≥ 2 480 average

5 295 average

≥ 1 984 individual

4 447 individual

After fungal exposure: Penicillium luteum

MPa

≥ 2 480 average

5 109 average

≥ 1 984 individual

4 585 individual

After soaking in 1% hydrochloric acid

MPa

≥ 2 480 average

4 606 average

≥ 1 984 individual

3 923 individual

After soaking in 1% sodium hydroxide

MPa

≥ 2 325 average

4 171 average

≥ 1 860 individual

3 723 individual

After soaking in water

MPa

≥ 2 790 average

4 771 average

≥ 2 232 individual

4 268 individual

Results of Testing the Internal Bond Properties of the Products

Property

Unit

Requirement

Result

Exposure after 2-h boil (modified)

MPa

≥ 0.104

0.575

Exposure after six-cycle test

MPa

≥ 0.035

0.389

At −20°C

MPa

≥ 0.345

1.038

After fungal exposure: Aspergillus niger vs. Teigh

MPa

≥ 0.207

0.760

After fungal exposure: Penicillium luteum

MPa

≥ 0.207

0.745

After soaking in 1% hydrochloric acid

MPa

≥ 0.069

0.527

After soaking in 1% sodium hydroxide

MPa

≥ 0.155

0.591

After soaking in water

MPa

≥ 0.224

0.674