Reinforced material from reclaimed rubber/natural rubber, using electron beam and thermal treatment

Abstract

Reclaimed rubber powder (RRP) was treated by the addition of maleic anhydride (MA) to impart desired properties suitable for self-adhesive sheets and concrete lining applications. The produced MA-RRP was mixed with natural rubber (NR) with various compositions. A fixed 1 : 1 blend ratio of NR : RRP was reinforced with various contents of glass fiber (GF) in an open two-roll mixing mill. The composites were irradiated using a 1.5 MeV electron beam accelerator at 30 and 50 kGy irradiation doses. Different properties of composite such as tensile strength, elongation at break, hardness, swelling behavior in different media, thermal stability, and scanning electron microscope (SEM) for both unirradiated and irradiated samples with respect to the RRP and GF content were investigated. Results show that the tensile strength and swelling resistance increase with increasing RRP content in the NR/RRP blends, whereas the elongation at break exhibit opposite trend. It can be observed that the hardness increases with increasing the fiber content.

Waste tire rubber in polymer blends: A review on the evolution, properties and future

“…Similar results were also observed with NR/PBR/RTR blends [72]. Addition of compatibilizer such as maleic anhydride also offers improved thermal stability of the blend due to increased compatibility and interfacial bonding between virgin matrix and RTR [81]. Another area of lack in GTR/RTR rubber blend is indeed the thermal properties.…”

Influence of the irradiation dose in the cellular structure of natural rubber foams cross-linked by electron beam irradiation

“…Secondly, the cross-linking degree can be controlled throughout the applied irradiation dose (ID) before the foaming process. The process has found tremendous interest in the scientific community and there are plenty of articles in the literature regarding the effect of high energy electron radiation not only on the properties of NR, modified NR and their blends Almaslow et al, 2013;Banik and Bhowmick, 2000;Chirinos et al, 2003;Craciun et al, 2014;Hassan et al, 2007;Jing et al, 2013;Khalid et al, 2010;Manshaie et al, 2011;Mitra et al, 2008;Nabil and Ismail, 2014;Ratnam and Zaman, 1999;Ratnam et al, 2000;Sharif et al, 2005;Stelescu et al, 2014) but also on the properties of polyolefins such as low-density polyethylene (LDPE), high-density polyethylene (HDPE) and ethylene-vinyl acetate (EVA) (Eaves, 1988;Khonakdara et al, 2006;.…”

Improvement of the properties of natural rubber/ground tire rubber composites through biological desulfurization of GTR

“…One possible way to overcome this problem is to break the sulfur crosslink bonds on the surface of GTR, thereby make the hydrocarbon chain regain flexible and increase the number of reactive sites. The crosslink bonds of ground rubber can be cleaved via numerous techniques, primarily physical and chemical methods [3][4][5][6]. Both methods are efficient to enhance the bonds between the ground rubber and matrix [7][8][9][10], but the methods have high energy consumption or secondary pollution involved.…”