Preparation method for flame-retardant flexible abrasive blasting material

A flame-retardant, abrasive technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as limitations, large closed holes, and reduced sponge quality

Inactive Publication Date: 2015-06-10
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 prepolymers is easy to generate large closed pores, which reduces the quality of the sponge; sporadic sparks are sometimes generated due to friction during the blasting process, which limits the use of flexible blasting materials in the petrochemical industry for flammability and explosion Applications in occasions

Method used

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  • Preparation method for flame-retardant flexible abrasive blasting material

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Embodiment 1

[0051] like figure 1 As shown, the process flow diagram of a preparation method of flame-retardant flexible media spraying and grinding according to the present invention. In the preparation process of the flexible abrasive material, the prepolymer is toluene diisocyanate, the abrasive is alumina, the water-absorbing polymer is fully hygroscopic polymethacrylic water-absorbing resin, and the flame retardant is borate flame retardant (FB ). The weight ratios of abrasive grains, prepolymers, fully hygroscopic water-absorbing polymers, and flame retardants are 79%, 18%, 2.98%, and 0.02%, respectively. After the prepolymer and flame retardant 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 by the abrasive heating element 81, and the abrasive s...

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Abstract

The invention relates to a preparation method for a flame-retardant flexible abrasive blasting material. The preparation method comprises the following steps: uniformly mixing prepolymer, water-absorbing polymer which sufficiently absorbs water, a flame retardant and an abrasive material; catalyzing the prepolymer by water released by the water-absorbing polymer and generating chemical reaction, processing a reaction mixture to form the flame-retardant flexible abrasive blasting material, and pelletizing the flexible abrasive blasting material. The preparation method can effectively control the chemical reaction speed, eliminates the defects of a conventional flexible abrasive blasting material production process and increases a flash point of the flexible abrasive blasting material, so that guarantee is provided for an flammable and combustible place 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 compound made of a prepolymer, a fully hygroscopic organic polymer hygroscopic material, a flame retardant, and organic and / or inorganic abrasives An elastic sponge abrasive 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 corundum, combined with wet sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/14C08L75/04C08K13/02C08K5/521C08G18/10C08G18/30B29B9/06C09K3/14C08G101/00
Inventor 王海波朱利洪丁琳洪汛平王为华梁斌
Owner NANJING RECLAIMER ENVIRONMENTAL TEKNIK
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