Preparation method of fire resistant fiber type flexible abrasive blasting material

Abstract

The invention relates to a preparation method of a fire resistant fiber type flexible abrasive blasting material. The preparation method comprises the following steps: catalyzing a prepolymer by adopting a device for uniformly mixing prepolymer, cellulosic fibers, water-absorbing polymer capable of sufficiently absorbing water, a flame retardant and an abrasive material and using water released by the water-absorbing polymer so as to chemically react, processing a reaction mixture to form the flexible abrasive blasting material including the complete cellulosic fibers, and pelletizing the flexible abrasive blasting material. According to the preparation method, control the chemical reaction speed can be effectively controlled, the defects of a conventional flexible abrasive blasting material production process are eliminated, a flashing point of the flexible abrasive blasting material is increased, and guarantee is provided to application of in the fire resistant fiber type flexible abrasive blasting material combustible and explosive areas of the petrochemical industry.

Description

technical field [0001] The invention relates to a method for preparing a flexible abrasive material for sandblasting, in particular to a method using prepolymers, cellulose fibers, fully hygroscopic organic polymer hygroscopic materials, flame retardants, organic and / or inorganic abrasives The elastic sponge abrasive made by compounding belongs to the technical field of environmental protection abrasive manufacturing. Background technique [0002] Sandblasting is widely used in metal rust removal, building surface treatment and other fields. Taking shipbuilding, petrochemical equipment repair, offshore drilling platforms and other facilities as examples, the workload of surface cleaning and maintenance is increasing, the quality requirements are getting higher and higher, and the requirements for surface cleaning technology, safety, and environmental protection are also increasing. Higher and higher. The existing process mainly uses rigid abrasives such as steel grit or co...

AI Technical Summary

Problems solved by technology

But it also has certain limitations: when water and prepolymer are mixed, it is a chemical reaction that is almost impossible to control, because the chemical reaction occurs immediately after the mixing is completed, and it is self-sustaining, the chemical reaction is very fast, and the process control requires High; rapid reaction between free water and prepolymer tends to generate larger closed pores, which reduces the quality of the sponge; water and cellulose fibers must be uniformly mixed in advance, and the cellulose fibers must be hydrophilic; Sporadic sparks will be generated, which limits the application of flexible abrasive blasting materials in flammable and explosive situations in the petrochemical industry

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