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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 4 Detail data of LRPU foams of different lignosulfonate-to-APP ratios from cone calorimeter

From: Lignosulfonate/APP IFR and its flame retardancy in lignosulfonate-based rigid polyurethane foams

Sample

Lignin:APP ratio

PHRRa (kW/m2)

TPHRRa (s)

THRa (MJ/m2)

TSRa (m2/m2)

TSPa (m2)

MCOa (kg/kg)

MEHCa (MJ/kg)

LRPU1

1:1

172

72

14.8

398

3.5

0.076

16.2

LRPU2

1:2

156

81

14.7

443

3.9

0.066

16.1

LRPU3

1:3

147

105

19.3

491

4.3

0.046

16.9

LRPU4

1:4

121

120

17.3

410

3.6

0.036

15.4

LRPU5

1:5

113

118

14.2

291

2.6

0.024

14.5

  1. LRPU and APP refer to lignosulfonate-based rigid polyurethane and ammonium polyphosphate, respectively. a: PHRR and TPHRR refer to the peak heat release rate and the time-to-peak heat release rate, respectively. THR, TSR, TSP, MCO, and MEHC refer to the total heat release, the total smoke rate, the total smoke production, the mean CO production, and the mean effective heat combustion, respectively
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