Synthetic Layered Silicate as a Carrier for Liquid Ingredients for the Rubber‐ and Tire Industry

Abstract

We propose the use of novel materials based on synthetic calcium silicate hydrate (CSH) for the rubber‐ and tire industry. We found that the synthetic silicate belongs to the family of layered calcium silicate hydrates. Due to its layered structure and inert surface it easily adsorbs liquid components of rubber compounds, such as bis(triethoxysilylpropyl) tetrasulfide (TESPT) and liquid polysulfide (LP). Then, in processing, the CSH can smoothly release these components. The water, trapped in the material's gallery layers, plays the role of a catalyst in the silane coupling on silica's surface. In addition, we used this silicate as a component in promoter systems in order to improve adhesion stability between a brass‐coated steel cord and rubber. The application of the calcium silicate hydrate as an inert substrate for the promoter system allowed the development of materials that have comparable adhesion strength with most commercial promoters.

Contribution of silica–rubber interactions on the viscoelastic behaviors of modified solution polymerized styrene butadiene rubbers (M-S-SBRs) filled with silica

“…8,9 To date, the most successful efforts to enhance the ller dispersion is the introduction of silane coupling agents. 10,11 In addition, surface modication of silica [12][13][14] and the development of new highly dispersed silica [15][16][17][18] have also been subjects of interest in recent years.…”

Effect of filler–elastomer interactions on the mechanical and nonlinear viscoelastic behaviors of chemically modified silica‐reinforced solution‐polymerized styrene butadiene rubber

“…Silica particles show strong filler–filler interactions and adsorption of polar compounds in that silica is abundant in silanol groups on its surface. In order to enhance the filler dispersion, many efforts have been devoted to the surface modification of silica6–9 and accordingly new highly dispersed silica has been developed in the recent years. One of the effective modification methods for silica is to graft the silane coupling agent (SCA) onto the silica surface via the condensation reaction between the alkoxy groups of SCA and silanol groups of silica 10–13.…”

Measurement of the condensation temperature of nanosilica powder organically modified by a silane coupling agent and its effect evaluation

“…The first is an in situ modification method in which a silane coupling agent is added to rubber compounds in the mixing process, and a coupling reaction between the macromolecular chains and nanosilica particles is achieved in a mixing process at a high temperature. [15][16][17][18] This is a timesaving and convenient modification method. However, its shortcoming is the nonhomogeneous distribution of the silane coupling agent in the compound, so some of the free molecules do not come into contact with nanosilica particles, and the efficiency of the coupling reaction decreases.…”

“…There are two main modification methods for nanosilica using a silane coupling agent. The first is an in situ modification method in which a silane coupling agent is added to rubber compounds in the mixing process, and a coupling reaction between the macromolecular chains and nanosilica particles is achieved in a mixing process at a high temperature 15–18. This is a timesaving and convenient modification method.…”