GO/NR composite preparation method and open mill for preparation thereof

Abstract

The invention discloses a GO / NR composite preparation method which comprises the following steps of S100, putting silicon dioxide, deionized water and a GO aqueous solution into a stirrer for stirring, and dispersing a mixture into a GO-SiO2 mixed liquid with a high-speed shearing machine; S200, adding 100 parts of centrifugal concentrated natural latex by mass in the GO-SiO2 mixed liquid, and performing ultrasonic vibration to obtain a GO-SiO2 / NRL mixed liquid; S300, pouring the GO-SiO2 / NRL mixed liquid into an open mill, obtaining a rubber master batch on a roller of the open mill, and scraping and collecting the rubber master batch with a scraper on the roller after the rubber master batch is dried for later use; and S400, mixing the prepared rubber master batch, zinc oxide (ZnO), stearic acid (SAD), an accelerant DPG and an anti-aging agent 4020 to finish preparation of a GO-SiO2 / NRL composite. By adopting the GO / NR composite preparation method, the phenomenon of uneven combinationof molecules in the rubber master batch caused by the accumulation of groups in the process of standing and jetting is avoided, and then liquid drops are instantaneously dehydrated and dried to obtain GO-SiO2 / NRL rubber master batch; and GO / NR composite preparation method is simple and controllable in process, scientific and reasonable in principle, low in energy consumption and production cost,strong in operability, more uniform in dispersion and friendly in use environment.

Description

technical field [0001] The invention relates to the field of rubber mixing, in particular to a preparation method of GO / NR composite material and an open mill for preparation thereof. Background technique [0002] Mixing is the first step in the rubber processing process, and it is also the most critical process. Through this process, various fillers are fully mixed with rubber, and the fillers are dispersed as uniformly as possible. The quality of the mixing result directly determines the rubber product. The performance and service life have been widely concerned by the industry. [0003] Graphene oxide (GO) is a derivative of graphene. It is a two-dimensional material with carbon atom hybridization type sp2 carbon structure in the original graphite structure obtained after graphite oxidation; GO has an ultra-thin sheet structure, large The surface area contains a large number of oxygen-containing groups such as hydroxyl and carboxyl, and has excellent mechanical, thermal ...

AI Technical Summary

Problems solved by technology

[0006] (1) The emulsion blending method can make GO and other fillers disperse more uniformly in the rubber matrix. Usually, acid and other demulsifiers are used to realize the co-precipitation of latex particles and GO, but adding acid or other chemical reagents for flocculation and subsequent dehydration and drying process is easy Re-agglomeration of fillers will cause problems of low efficiency, long time consumption and large water consumption;

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