Fire Propagation Performance of Intumescent Fire Protective Coatings Using Eggshells as a Novel Biofiller

Table 2

Results of fire propagation test.

Time (min.)	Calibration	Specimen A	Specimen B	Specimen C	Specimen D
		AR + T + M	AR + T + A	AR + T + CES	AR + T + M + A + CES
0.5	14	18	12	14	12
1	18	21	15	18	16
1.5	23	26	19	23	19
2	27	30	22	27	23
2.5	30	34	25	31	26
3	34	38	30	34	30
4	72	122	87	55	54
5	108	212	149	133	129
6	129	274	179	169	181
7	148	321	223	243	202
8	166	364	312	327	219
9	182	378	336	372	234
10	192	405	372	360	244
12	214	417	391	355	249
14	230	418	370	349	253
16	238	416	326	310	258
18	246	403	298	299	260
20	257	384	281	290	263
Subindex 1		1.8	0	0.2	0
Subindex 2		15	8.4	8.3	3.8
Subindex 3		5.7	3.4	2.9	0.7
Index of performance		22.3	11.5	11.2	4.3