Poly(acrylonitrile-co-butadiene-co-styrene) Reinforced with Hollow Glass Microspheres: Evaluation of Extrusion Parameters and Their Effects on the Composite Properties

Table 2

Density and HDT of the composites as a function of the hollow glass microspheres percentage with ANOVA statistical analysis for the variations encountered in the study.

Samples			Density (g·cm^−3)			HDT (°C)
ABS/B (control)			1.04 ± 0.001			83.3 ± 0.4
ABS2.5/Z1/SO38			1.04 ± 0.001			86.0 ± 0.7
ABS5.0/Z1/SO38			1.02 ± 0.006			82.9 ± 1.2
ABS7.5/Z1/SO38			1.06 ± 0.002			85.7 ± 1.1
ABS2.5/Z2/SO38			0.97 ± 0.004			83.5 ± 0.9
ABS5.0/Z2/SO38			0.98 ± 0.001			84.6 ± 0.9
ABS7.5/Z2/SO38			0.96 ± 0.004			83.0 ± 0.9
ANOVA-density
Source of variation	SQ	gl	MQ		Value	critical	Significant
Z1 and Z2	0.009	11	0.01	17.78	0.002	4.965	Yes
HGM wt.%	0.009	11	0	0.008	0.992	4.256	No
2.5/5.0/7.5
ANOVA-HDT
Source of variation	SQ	gl	MQ		Value	critical	Significant
Z1 and Z2	15.24	11	2.9	2.35	0.156	4.965	No
HGM wt.%	15.24	11	4.41	6.18	0.02	4.256	Yes
2.5/5.0/7.5