Enhancing interfacial and mechanical strength of styrene‐butadiene rubber composites via in situ fabricated halloysite nanotubes/silica nano hybrid

Abstract

In situ fabricated nano hybrid halloysite nanotubes (HNTs‐g‐Silica) by chemically grafting silica nanoparticles onto HNTs was used as the reinforcing filler for styrene butadiene rubber (SBR). The dispersion of HNTs‐g‐Silica and the interfacial interaction between HNTs‐g‐Silica and SBR were systematically investigated. The results suggested that HNTs‐g‐Silica was uniformly dispersed in SBR matrix. Moreover, compared with HNTs or the mixture of mixed HNTs/silica, HNTs‐g‐Silica could immobilize more rubber chains on its surface, manifesting a strong interfacial interaction between HNTs‐g‐Silica and SBR. Consequently, SBR/HNTs‐g‐Silica composites showed much higher mechanical strength and extensibility than SBR/HNTs/Silica or SBR/HNTs composites, for example, showing 123% increase in tensile strength compared with SBR/HNTs composites when the filler content was 30 phr. Besides, the loss factor at 60°C of SBR/HNTs‐g‐Silica composites was significantly lower than that of SBR/HNTs composites, indicating that HNTs‐g‐Silica should be better energy saving than HNTs when used in rubber tire materials. POLYM. COMPOS., 40:677–684, 2019. © 2018 Society of Plastics Engineers

In situ assembled C3N4/SiO2 nanohybrids for high comprehensive performance solution polymerized styrene‐butadiene rubber/butadiene rubber

“…[49,50] Tan δ at 0 C is corresponding to the wet skid resistance, while tan δ at 60 C reflects the rolling resistance of tire tread rubber, and the rolling resistance will be reduced if the tan δ at 60 C has a lower value. [49][50][51] How to improve the wet skid resistance and reduce the rolling resistance of tire tread rubber at the same time has always been the focus of tire industry. It could be found from the figure that, C 3 N 4 /SiO 2 -SSBR/BR nanocomposites have better comprehensive dynamic properties than SiO 2 -SSBR/BR especially wet skid resistance and rolling resistance, 5% C 3 N 4 / SiO 2 -SSBR/BR nanocomposites in particular (with an increase tan δ of 10.8% at 0 C, and a decrease of 50.5% at 60 C).…”

Preparation and characterization of halloysite nanotube‐silica/silicone rubber composites: Effect of HNTs on mechanical and thermal properties

“…The polymers that used to composite with HNTs include polyolefins, epoxy resins, polyamides, natural rubbers, styrene-butadiene rubbers, EPDM rubber, and so on. [24][25][26][27][28] The results showed that halloysite nanotubes contribute to the thermal stability, flameretardant, mechanical, and electrical properties of polymers. Reyhaneh Berahman 5 introduced hexamethylenetetraminemodified halloysite nanotubes into a silicone rubber matrix with different hardnesses, resulting in improved tensile strength and modulus of silicone rubber at a low filler loading.…”

“…HNTs have been used as a functional nanofiller to prepare a variety of polymer composites with excellent properties due to their chemically different internal and external surfaces. The polymers that used to composite with HNTs include polyolefins, epoxy resins, polyamides, natural rubbers, styrene‐butadiene rubbers, EPDM rubber, and so on 24–28 . The results showed that halloysite nanotubes contribute to the thermal stability, flame‐retardant, mechanical, and electrical properties of polymers.…”

“…Reyhaneh Berahman 5 introduced hexamethylenetetramine‐modified halloysite nanotubes into a silicone rubber matrix with different hardnesses, resulting in improved tensile strength and modulus of silicone rubber at a low filler loading. Lin 28,29 prepared halloysite nanotube‐g‐silica hybrids by sol–gel method and applied them in SBR. SiO 2 adhered to the HNTs surface, resulting in many nano‐protruding structures that effectively expanded the HNTs‐specific area, decreased surface free energy, and inhibited HNTs aggregation.…”