Mechanical and Thermal Properties of R-High Density Polyethylene Composites Reinforced with Wheat Straw Particleboard Dust and Basalt Fiber
Table 1
Effect of PB dust content on thermal expansion coefficient of PB dust filled composites.
System
Filler content
Linear coefficient of thermal expansion (10−6/°C)
(wt%)
20 to 60°C
60 to −30°C
−30 to 20°C
VHDPE
0
177.53 (5.36)
168.40 (3.28)
138.48 (1.35)
10
147.67 (3.24)
146.50 (3.35)
129.64 (3.34)
20
143.73 (12.27)
136.07 (3.29)
122.88 (3.39)
30
98.85 (1.04)
97.80 (4.43)
88.49 (3.10)
40
90.10 (5.69)
88.57 (6.15)
85.41 (0.42)
RHDPE
0
151.17 (4.91)
146.40 (0.80)
124.40 (1.14)
10
136.47 (2.87)
136.77 (0.58)
119.3 (6.92)
20
133.03 (6.85)
131.63 (1.77)
113.60 (3.01)
30
117.20 (3.99)
116.93 (6.07)
100.04 (1.50)
40
109.60 (2.63)
105.53 (2.20)
95.01 (0.66)
VHDPE/RHDPE
0
155.67 (4.54)
154.70 (7.32)
129.47 (1.78)
10
134.90 (4.70)
134.10 (7.86)
116.30 (3.03)
20
128.67 (0.57)
127.90 (5.31)
102.59 (4.61)
30
108.30 (1.50)
108.27 (1.27)
89.27 (0.94)
40
103.93 (1.36)
101.97 (0.81)
86.15 (0.74)
The content of each filler was based on the total composite weight. Mean values with the same lowercased letters for each property are not significantly different at the 5% significance level. Numbers in the parenthesis are standard deviation based on five specimens. d, e, f, g, h, and i represent data statistics ranking in Duncan’s multiple range tests.
