Modified fly ash for reinforcing rubber products and preparation method thereof

Abstract

The invention discloses a modified fly ash for reinforcing rubber products and a preparation method thereof. The modified fly ash for reinforcing rubber products provided by the invention comprises the following raw materials: fly ash, thermosetting resin solution and interface adhesive solution, wherein the weight ratio of the fly ash to thermosetting resin solution to interface adhesive solution is 100:(5-30):(5-20). A twice coating modifying method adopted for modifying the fly ash comprises the following steps: firstly, coating the thermosetting resin solution on the surface of the fly ash, and then coating the interface adhesive solution on the surface of the fly ash after the coating at the first time, thereby acquiring the modified fly ash. According to the preparation method provided by the invention, twice coating modification is adopted; the modification for the surface of the fly ash is uniform; an interface layer for strong-phase inter-acting force is formed between the fly ash and the rubber material; the bonding is more firm; the interfacial force transfer is uniform; the filling amount in the rubber products is increased; the mechanical property is increased; the preparation method provided by the invention has the advantages that the expensive coupling reagent and strong acid and alkali strong in corrosivity are not adopted, the cost is low and the operation is safe; a sealing pipeline is used for conveying the raw materials; the working environment is improved; the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a modified fly ash and a preparation method thereof, in particular to a modified fly ash for rubber product reinforcement and a preparation method thereof. Background technique [0002] For a long period of time in the future, my country's energy supply and consumption pattern will still be dominated by coal. However, with the consumption of coal, a large amount of fly ash waste is produced. At present, the comprehensive utilization of fly ash in our country is still at a low level, mainly concentrated in building materials, road construction, backfill, agriculture and chemical industry. Although these methods can solve part of fly ash recycling, but the added value is low and has certain secondary pollution. With the development of technology, fly ash is also gradually used in the field of polymer material filling. However, due to the high density of fly ash, many hydroxyl groups on the surface, and strong hydrophilicity, it...

AI Technical Summary

Problems solved by technology

[0005] Since the main components of fly ash include silicon dioxide, ferric oxide, aluminum oxide, etc., it is more effective to use coupling agent to modify the silicon dioxide, but the effect on metal oxide treatment is not obvious.

In addition, the existing technology uses a single modifier for surface modification, and it is difficult to select a modifier that is firmly bonded to both the fly ash and the rubber matrix, so that the formed between the fly ash and the rubber matrix It is a weak boundary layer, and the reinforcement effect is not obvious

Therefore, there are following defects in the existing disclosed technology: the cost of using a coupling agent is high, the pretreatment process is complex, the time is long, and the efficiency is low; especially the use of highly corrosive strong acids and strong alkalis is very corrosive to equipment, and the requirements for equipment are very high. It is extremely harmful to human health; the fly ash is modified unevenly, and the physical properties of the material are not improved significantly, and the cost of the material is reduced at the expense of the mechanical properties of the material.

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