Intrinsically Noncombustible Thermosets from Sulfur-Containing Epoxy Resin and Benzoxazines: Evaluation of Thermal and Mechanical Properties

Table 2

Thermogravimetric analysis data of blend resins.

	w (BZ): w (EPS)	Tint (°C)	T10% (°C)	Char yield, %	LOI
Poly(TBP-a/EPS)	10 : 0	305	373	63	43
	7 : 3	306	361	58	41
	5 : 5	308	365	58	41
	3 : 7	310	363	43	35
	1 : 9	312	365	35	32
Poly(TBP-fa/EPS)	10 : 0	325	446	68	45
	7 : 3	315	375	63	43
	5 : 5	315	363	58	41
	3 : 7	318	366	45	36
	1 : 9	319	368	37	32
Poly(TBP-tma/EPS)	10 : 0	314	425	66	44
	7 : 3	306	375	60	41
	5 : 5	308	364	50	38
	3 : 7	310	369	45	36
	1 : 9	311	371	35	32

TBP, 4,4’-thiobisphenol; EPS, epoxy resin; BZ, benzoxazine; LOI, limiting oxygen index.