Roles of silane coupling agents on properties of silica-filled polychloroprene

Sae‐Oui, Pongdhorn; Sirisinha, Chakrit; Thepsuwan, Uthai; Hatthapanit, Kannika

doi:10.1016/j.eurpolymj.2005.09.003

Cited by 121 publications

(84 citation statements)

References 10 publications

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“…Further increasing the silane loading (to 12%) then caused the three tested properties to decline. Similar results were also observed in a study by Sae-oui et al (2006). It is likely that excessive coupling agent content leads to a plasticization effect.…”

Section: Interfacial Bonding Reinforcement With Coupling Agentsupporting

confidence: 88%

Interfacial Adhesion and Damping Characteristics of Laminated Veneer Lumber Intercalated with Rubber Sheets

Han

Zhan

et al. 2016

BioResources

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Laminated wood veneer lumber intercalated with rubber sheets (LLVR) was fabricated using a layered adhesive system composed of polyaryl polymethylene isocyanate (PAPI) for wood-rubber inter-bonding and phenol formaldehyde (PF) resin to glue the wood veneers. The optimized manufacturing process (chloroprene rubber: CR; PAPI: 80 g/m 2 ; PF: 200 g/m 2 ; and silane: 9.0 wt.%) was determined. The process as developed was then utilized to fabricate nine-ply LLVRs of five balanced constructions with two or three CR laminates used as various layers. The physico-mechanical properties of the LLVRs were evaluated, and the results showed that LLVRs had strong shear strength, sound dimensional stability, decent bending strength, and favorable toughening and buffering performances. The newly developed product is an interesting potential alternative to traditional laminated veneer lumber or plywood.

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Section: Interfacial Bonding Reinforcement With Coupling Agentsupporting

confidence: 88%

Interfacial Adhesion and Damping Characteristics of Laminated Veneer Lumber Intercalated with Rubber Sheets

Han

Zhan

et al. 2016

BioResources

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“…[7][8][9][10] Silanes can also improve the processability of silica-filled rubber in the uncured state. 11,12 Much of the filler network develops post-mixing when the rubber is annealed at elevated temperatures (e.g., during the early part of the cure process before the polymer network is established). Böhm and Nguyen 13 were the first to highlight this feature, and more details about this flocculation phenomenon were revealed in later papers.…”

Section: Introductionmentioning

confidence: 99%

Flocculation, Reinforcement, and Glass Transition Effects in Silica-Filled Styrene-Butadiene Rubber

Robertson

Lin

Bogoslovov

et al. 2011

Rubber Chemistry and Technology

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The introduction of silanes to improve processability and properties of silica-reinforced rubber compounds is critical to the successful commercial use of silica as a filler in tires and other applications. The use of silanes to promote polymer-filler interactions is expected to limit the development of a percolated filler network and may also affect the mobility of polymer chains near the particles. Styrene-butadiene rubber (SBR) was reinforced with silica particles at a filler volume fraction of 0.19, and various levels of filler-filler shielding agent (n-octyltriethoxysilane) and polymerfiller coupling agent (3-mercaptopropyltrimethoxysilane) were incorporated. Both types of silane inhibited the filler flocculation process during annealing the uncured rubber materials, thus reducing the magnitude of the Payne effect. In contrast to the significant reinforcement effects noted in the strain-dependent shear modulus, the bulk modulus from hydrostatic compression was largely unaltered by the silanes. Addition of polymer-filler linkages using the coupling agent yielded bound rubber values up to 71%; however, this bound rubber exhibited glass transition behavior which was similar to the bulk SBR response, as determined by calorimetry and viscoelastic testing. Modifying the polymer-filler interface had a strong effect on the nature of the filler network, but it had very little influence on the segmental dynamics of polymer chains proximate to filler particles.

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“…The cure characteristics, e.g., scorch time (t s 2) and optimum cure time (t c 90) including minimum torque (ML) and maximum torque (MH) were determined using a moving die rheometer (MDR, TechPro MD+) at 155°C. As it is reported earlier that the torque difference (MH-ML) is directly proportional to the degree of crosslinking, it is therefore employed to indirectly represent the crosslink density of the blend vulcanizates herein [11].…”

Section: Preparation and Testing Of Rubber Compoundsmentioning

confidence: 99%

Effect of blend ratio on aging, oil and ozone resistance of silica-filled chloroprene rubber/natural rubber (CR/NR) blends

Sae‐Oui¹,

Sirisinha²,

Hatthapanit³

2007

Express Polym. Lett.

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Abstract. The effect of blend ratio on properties of chloroprene rubber/natural rubber (CR/NR) blends was investigated. In addition to the mechanical properties, attention was also given to the resistance to thermal aging, oil and ozone of the blends. Silica was selected as a reinforcing filler in this study due to its unique characteristic to interact with CR. The results reveal that, due to the better filler dispersion and the greater crosslink density, the silica-filled CR possesses lower compound viscosity and better mechanical properties, compared to the silica-filled NR. The aging properties, oil and ozone resistance of the silica-filled CR are also significantly better than those of the silica-filled NR. The mechanical properties and the resistance to degradation of the silica-filled CR/NR blends are mainly governed by the blend morphology. It is found that good mechanical properties in association with adequately high resistance to degradation from thermal aging and oil are obtained when CR remains the matrix in the blends. Even though the ozone cracks are found in all blends, a thorough look at the results reveals that considerable improvement in ozone resistance is achieved with increasing CR content.

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Roles of silane coupling agents on properties of silica-filled polychloroprene

Cited by 121 publications

References 10 publications

Interfacial Adhesion and Damping Characteristics of Laminated Veneer Lumber Intercalated with Rubber Sheets

Interfacial Adhesion and Damping Characteristics of Laminated Veneer Lumber Intercalated with Rubber Sheets

Flocculation, Reinforcement, and Glass Transition Effects in Silica-Filled Styrene-Butadiene Rubber

Effect of blend ratio on aging, oil and ozone resistance of silica-filled chloroprene rubber/natural rubber (CR/NR) blends

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