Preparation method of flexible abrasive-blasting material with fibers embedded

A flexible, jet-grinding technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as large closed pores, reduced sponge quality, and high process control requirements

Inactive Publication Date: 2015-05-13
NANJING RECLAIMER ENVIRONMENTAL TEKNIK
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 and reduce sponge quality; water and cellulose fibers must be uniformly mixed in advance, and cellulose fibers must be hydrophilic

Method used

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  • Preparation method of flexible abrasive-blasting material with fibers embedded

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Embodiment 1

[0052] Such as figure 1 As shown, the process flow diagram of a method for preparing a fiber-embedded flexible medium by jet milling according to the present invention. In the preparation process of the flexible abrasive material, toluene diisocyanate is used as the prepolymer, hydrophobic cellulose fiber is used as the cellulose fiber, aluminum dioxide is used as the abrasive material, and fully hygroscopic polymethacrylic acid water-absorbing resin is used as the water-absorbing polymer. The weight ratios of abrasive particles, prepolymers, fully hygroscopic water-absorbing polymers, and cellulose fibers are 78%, 18%, 3%, and 1%, respectively. After the prepolymer and cellulose fibers are uniformly mixed in the prepolymer storage tank 61, they are heated to about 38°C by the prepolymer heating element 83, and then sent to the mixer 74 by the positive displacement screw pump 72, and mixed with the abrasive The abrasive in the storage tank 62 is heated to about 37.8°C...

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Abstract

The invention relates to a preparation method of a flexible abrasive-blasting material with fibers embedded. An even mixing device for prepolymers, cellulose fibers, fully hygroscopic water-absorbent polymers and abrasive materials is adopted, water released by the water-absorbent polymers is used for catalyzing the prepolymers, a chemical reaction occurs, the reaction mixture is processed, a flexible abrasive-blasting material containing the complete cellulose fibers is formed, and then the flexible abrasive-blasting material is granulated. The method can effectively control the chemical reaction speed, overcome defects of traditional flexible abrasive-blasting material production technologies and guarantee production of high-quality polyurethane flexible abrasive materials.

Description

technical field [0001] The invention relates to a preparation method of flexible abrasive material for sand blasting, in particular to a composite material made of prepolymer, cellulose fiber, fully hygroscopic organic polymer hygroscopic material, organic and / or inorganic abrasive The invention discloses a method for preparing elastic sponge abrasives, which belongs to the technical field of environmental protection abrasives 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/14C08J9/08C09K3/14B29B9/06
Inventor 王海波朱利洪丁琳
Owner NANJING RECLAIMER ENVIRONMENTAL TEKNIK
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