The influences of silane coupling agents on rheological properties of bentonite/nitrile butadiene rubber nanocomposites during curing process

Abstract

In the present work, the influences of different silane coupling agents (SCA) on the rheological behaviors of Bent/NBR nanocomposites during the curing process were investigated. The nanocomposites were prepared with a green method which is simple and free of organic solvents. The dispersion state and filler-polymer interfaces were analyzed with XRD, TEM, and SEM while rheological behaviors of the nanocomposites were explored with a rubber processing analyzer (RPA).(3-Mercaptopropyl)trimethoxysilane (MPTMS) and bis [3-(triethoxysilyl)propyl] tetrasulfide (TESPT) both improved the dispersion state of bentonite in the matrixes significantly. MPTMS increased the crosslinking density by forming single sulfur bonds while TESPT worked as a plasticizer and delayed the formation of crosslinking during curing process. [3-(2-Aminoethylamino)propyl]triethoxysilane (AEAPTMS) led to reversible filler-rubber interactions, which was the main reason for the low elastic torque of the vulcanized nanocomposites.

Effect of 3-Mercaptopropyltriethoxysilane Modified Illite on the Reinforcement of SBR

“…The obtained slurry denoted as K-illite was then used to prepare SBR composites. This procedure has also been employed to the silane grafting of silica [ 46 ], the silane modification of Bent [ 47 ] and so on.…”

Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties

“…The additives can include a range of substances, including inorganic fillers (e.g., silica [2,3], calcium carbonate), maleic anhydride [4,5], and zirconium phosphate [6]. Additionally, materials like organoclays [7], graphene particles [8], bentonite nanoparticles [9], polyolefins [10], and carbon nanotubes [11] can also serve as components for modified rubber. Among the several types of rubber modification, halogenation reactions are one of the most common and effective, imparting versatile curing properties that enhance joint vulcanization, adhesion, and resistance to aging and different chemicals.…”

Modification of nitrile‐butadiene rubber surface by immersion into 1,1,2‐trifluoro‐1,2,2‐trichlor‐ethane and its physio‐chemical properties

“…Bulk modification of rubber is technologically attractive and relatively simple, typically achieved by adding various additives to the crude rubber before vulcanization or modifying the rubber at the latex stage 10 . These additives can include substances like inorganic fillers (such as silica, 11,12 calcium carbonate), plasticizers (e.g., paraffinic oils), tackifiers (resins, rosin esters), antioxidants, zinc dimethylacrylate, 13 ethylene‐acrylic base, 14 foaming agents (e.g., azodicarbonamide), organoclays, 15 rubber ash, 16 graphene particles, 17 bentonite nanoparticles, 18 polyolefins, 19 expanded graphite, 20 carbon nanotubes, 21 or coloring agents (organic and inorganic compounds) 22 . Natural fibers can also serve as a component for modified rubber 23,24 .…”