Study of the Addition of a Thermoplastic Vulcanizate to a HDPE Composite Highly Filled with Magnesium Hydroxide and Its Effect on the Tensile and Flame Retardant Properties

Table 3

Composition^a of the flame retardant studied composites.

Designation of composites^b	HDPE (wt%)	PEgMA (wt%)	TPO (wt%)	TPV (wt%)
TPO-00	90	10	—	—
TPO-10	80	10	10	—
TPO-20	70	10	20	—
TPO-30	60	10	30	—
TPO-40	50	10	40	—
TPV-00	90	10	—	—
TPV-10	80	10	—	10
TPV-20	70	10	—	20
TPV-30	60	10	—	30
TPV-40	50	10	—	40

^aThe concentration of HDPE, PEgMA, and TPO/TPV is in wt%, totaling 100 g in each case. The content of the lubricant and Mg(OH)₂ is in phr^c with respect to the above total 100 g of resin. In addition to HDPE, PEgMA, and TPO/TPV, all formulations included 1.5 phr of silicon lubricant and 65 phr of micro- and 65 phr of nanomagnesium hydroxides (130 total). ^bThe TPV used in all composites in this table is a blend of EPDM/HDPE (60/40 wt%), crosslinked with 0.10 phr Luperox. ^cphr: parts per hundred parts of resin (parts by weight).