Preparation method of hydrophobic oleophobic BC superfine dry powder extinguishing agent base material carbonate

Abstract

The invention discloses a preparation method of a hydrophobic oleophobic BC superfine dry powder extinguishing agent base material carbonate. The preparation method comprises the steps: (1) smashing carbonate into superfine powder with the 90% particle size smaller than or equal to 5mu m; (2) adding the superfine powder into a silane coupling agent organic solution under a normal temperature to perform dipping treatment; (3) after reaction finishes, performing suction filtering, washing, drying under a high temperature, cooling, smashing and sieving; (4) adding the treated dry superfine powderinto a fluorosilane organic solution to perform dipping treatment; (5) after reaction finishes, performing suction filtering, washing, drying under a high temperature, cooling, smashing and sieving to obtain hydrophobic oleophobic superfine carbonate powder. The superfine powder prepared by the invention not only has excellent hydrophobic oleophobic performance, but also has high stability; whenthe superfine powder is applied to preparing the superfine dry powder extinguishing agent, oil fire can be quickly extinguished; the superfine powder has the characteristics of high fire extinguishingeffectiveness and reburning resistance.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technology uses an alkoxysilylated compound called Flourosilane (FSI) or Silanesulfonamide for better wetting properties onto nanoparticles such as calcium oxaluminate particles. These modifications improve their ability to bind tightly together during use without losing effectiveness over time due to weak interactions like Van der Waals forces. Additionally, this modification makes these materials more stable against decomposition caused by heat exposure compared to previous methods. Overall, this new method provides improved performance and safety benefits while maintaining superior physical/chemical properties of traditional flame retardants.

Problems solved by technology

Technological Problem: Current methods use expensive chemicals such as chlorofluoro compounds or peroxybromides (PFO) to create fire extinction gases like CFB, while producing nonionic liquid fire exchanging particles called CEAHZ™ by adding certain types of molecules onto their surfaces. However, existing techniques either require long periods before they start working properly, may result in loss of effective properties during storage over time, or produce unwanted side effects when exposed to humid environments.

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