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Pyrotechnical aerosol-forming fire-extinguishing composite and method of its prodn

A technology of fire extinguishing composition and aerosol, which is applied in the direction of fire prevention equipment, smoke/mist generation, compressed gas generation, etc., can solve the problems of composition ignition and combustion instability, composition can not achieve anti-deformation strength, etc., to achieve Toxicity and explosion hazard reduction, hazard reduction effect

Inactive Publication Date: 2004-03-10
R AMTECH INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in KClO 4 and KNO 3 As a result, the ignition and combustion of the composition is unstable, and the composition cannot achieve high deformation resistance, so high compression molding pressure must be used

Method used

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  • Pyrotechnical aerosol-forming fire-extinguishing composite and method of its prodn
  • Pyrotechnical aerosol-forming fire-extinguishing composite and method of its prodn
  • Pyrotechnical aerosol-forming fire-extinguishing composite and method of its prodn

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Embodiment 1

[0055] Prepare 1 kilogram of pyrotechnics to form an aerosol fire extinguishing composition, add the following components in a paddle mixer: 111 grams of specific surface area is 1500cm 2 / g of formaldehyde-phenol polycondensate and 19.59 grams of dichloromethane, an 85% suspension was obtained. The suspension was prepared in a water-jacketed reactor at 20-25°C, the blades in the mixer were rotating at 85 rpm. The mixing time was 15 minutes.

[0056] To this suspension, 45 g of a dispersion of polytetrafluoroethylene particles in butyl phthalate were added, the ratio of polytetrafluoroethylene to butyl phthalate being 20:25. The dispersion was prepared in a water-jacketed reactor at 20-25°C with a blade rotation speed of 85 rpm in the mixer. Mixing time 10 minutes.

[0057] In the prepared suspension of formaldehyde-phenol polycondensate containing dichloromethane and the suspension of polytetrafluoroethylene dispersion of dibutyl phthalate, add 640 grams in two steps with ...

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Abstract

This invention relates to the field of fire-fighting equipment, specifically to means of fire fighting by a fire-extinguishing aerosol that is formed during burning of pyrotechnical composite and a method of its production. The invention allows to prepare pyrotechnical, aerosol-forming fire-extinguishing composite with good deformation strength characteristics, low fire-extinguishing concentration and regulate burning velocity. The pyrotechnical aerosol-forming fire-extinguishing composite contains an oxidizer, a production process additive and burning binder formed by thermoplastic formaldehyde and phenol polycondensate, plasticized by dicarboxylic acid ester and reinforced by polytetrafluoroethylene. The method of producing the composite consists of mixing of formaldehyde and phenol polycondensate suspension in an organic solvent and polytetrafluoroethylene dispersion in dicarboxylic acid ester, mixing the resulting composition with an oxidizer and a production process additive with subsequent thermomechincal effect. The invention can be used for fire-extinguishing in different structures and devices without harmful effect on human body and living organisms, nature.

Description

technical field [0001] The present invention relates to the field of fire extinguishing equipment and, in particular, to fire extinguishing aerosols formed by burning pyrotechnic mixture products for use in extinguishing fires. [0002] Products made of aerosol-forming compounds may be used in equipment intended primarily for fighting fires in confined spaces such as: [0003] Warehouses, garages and shop houses [0004] car compartment. Background technique [0005] The effectiveness of aerosol-forming fire-extinguishing mixtures and products consisting of such mixtures can be evaluated by whether they meet all of the following requirements: [0006] - Achieve high fire extinguishing efficiency with low fire extinguishing concentration; [0007] - Since the product contains extremely small amounts of insufficiently oxidized components (NO, CO) and explosive hazardous components (H 2 ), low toxicity and low explosion hazard when burning the product; [0008] - low combu...

Claims

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Application Information

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IPC IPC(8): A62D1/06
CPCA62D1/06
Inventor D·L·鲁辛A·P·丹尼斯尤克D·B·米哈莱夫Y·G·谢佩莱夫
Owner R AMTECH INT
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