Modification of white carbon black by co-using AEO and silane coupling agent, and method for compounding modified white carbon black and rubber

Abstract

The invention provides modification of white carbon black by co-using AEO and a silane coupling agent, and a method for compounding the modified white carbon black and a rubber, and relates to the field of applications of AEO (aliphatic polyoxyethylene ether) in wet modification of white carbon black by matching with a silane coupling agent. According to the present invention, the direct modification of white carbon black in a water phase by using an insoluble silane coupling agent can be achieved by using the amphiphilicity of AEO and the grafting property of AEO to white carbon black; compared to the traditional method for modifying the white carbon black in the water phase by using the silane coupling agent, the method of the present invention has the following characteristics that the use of a large amount of organic solvents is avoided, the white carbon black modification cost is saved, the VOC emission generated during the modification process is significantly reduced, and the environmental protection is easily achieved; the modification method is characterized in that AEO accounting for 1-100% of the mass of the white carbon black and the silane coupling agent accounting for 1-100% of the mass of the white carbon black are introduced to modify the white carbon black; and the modified white carbon black and the rubber can be compounded through a variety of methods, the white carbon black in the prepared composite material has the uniform distribution, and the dynamic mechanical property and the strength are significantly improved compared to the existing wet modified white carbon black / rubber composite material.

Description

technical field [0001] The present application relates to the technical field of inorganic nano powder modification, and more specifically relates to a method for organic modification of white carbon black and its compounding with rubber. Background technique [0002] Silica is a general term for silicate and amorphous silicic acid, and is a composition available SiO 2 ·nH 2 The porous substance represented by O, whose physical form is white powder, is also called hydrated silica. The primary particle size is between 10-40nm, and the specific surface area is 20-360m 2 g ‐1 Between, the DBP test value is 1.4‐2.6cm 3 g ‐1 between. Silica is a commonly used reinforcing filler in the rubber field. It can effectively reduce the hysteresis of the rubber while improving the physical and mechanical properties of the rubber. As a filler, these characteristics are used in the preparation of energy-saving and environmentally friendly "green tire" treads. Glue is irreplaceable. ...

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Problems solved by technology

However, the alkoxy groups in the silane coupling agent are complex in form, and some alkoxy groups are also difficult to hydrolyze in pure water (such as ethoxy groups), although the other part of the alkoxy groups are easy to hydrolyze, but there is a strong self-polymerization ( Such as methoxyl), so the silane coupling agent is used in the water-phase modification of silica, usually by adding organic solvents and adjusting the pH value to control its hydrolysis and self-polymerization, which leads to its use conditions are very complex

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