Effects of interphase on the mechanical properties of short-fiber reiforced rubber

Abstract

The mechanical properties of short-fiber reinforced polychloroprene rubber have been investigated as functions of interphase condition, fiber content, and fiber aspect ratio. The tensile strength of reinforced rubber exhibits a dilution effect in each interphase. Both the yield strength and tensile moduli are significantly improved with the fiber content. The bursting pressure of reinforced rubber increases up to 8.73 times compared to virgin material. The bursted shape of virgin rubber shows a radiating shape while that of reinforced rubber shows a fluctuating straight line. The better the interphase condition shows the smaller the changing rate of the spring constant. The temperature of rubber matrix increases about 2.6 times and those of the reinforced rubber show a 1.4-2.2 times increase after the fatigue test. The better the interphase condition shows the smaller the changing rate of temperature with the same fiber content. In this study, the interphase model 'E' with double coatings of the bonding agent 402 and a rubber solution becomes the best interphase model in comparison to the five different models.

Waste newsprint fibers for reinforcement of radiation-cured styrene butadiene rubber-based composites - Part I: Mechanical and physical properties

“…In the absence of interfacial bonding, it never recovered its strength. 14 A better interphase condition showed a lower critical fiber content and dilution ratio ( c / matrix ). We believe that the case of the good interphase condition lowered the stress concentration compared to the case of the poor fiber/matrix interface condition.…”

Effects of Interphase and Short Fiber on Puncture and Burst Properties of Short-fiber Reinforced Chloroprene Rubber

“…The effectiveness of the interphase in this respect descends in the following order: E4C4B4A4D. Tensile moduli are similar [12]. The puncture stress increases up to 2.08 times that of the comparable matrix value in the case of interphase model 'E' and fiber content 30 phr.…”

“…The specimen dimension which has pressurized area was 40 mm in diameter and 1 mm in thickness. The specimen was put between the die and holder, and was held with M10 bolt in four places [12]. The maximum burst pressure and maximum height (h) by the hydraulic pressure were recorded at room temperature.…”

“…The maximum radius (R) of the balloon at burst was calculated from the imaged circle considering the height. The failure strain ( ) and stress ( b ) [8,9,12] were calculated:…”

Interphase effect on the interfacial debonding behavior in short-fiber-reinforced rubber composites

“…Fiber-reinforced composites have been widely used for various kinds of structures because of its high specific strength, stiffness, and robust endurance. The reinforcement of rubber with fibers is one of these types [1]. Interphase, or interfacial zone, in fiber-reinforced composite materials is the thin layers between the fiber and the matrix.…”