Composite material for manufacturing dry powder fire extinguisher nozzle and method for manufacturing nozzle using same

Abstract

The invention discloses a composite material for manufacturing a dry powder fire extinguisher spraying pipe, wherein the composite material comprises the following raw materials by mass: 80-100 partsof a mixture of silicone rubber and a CPVC resin, 25-40 parts of a plasticizer, 6-8 parts of a heat stabilizer, 6-10 parts of nitrile butadiene rubber, 12-16 parts of a hot melt adhesive, 2-4 parts ofa cross-linking agent, 7-10 parts of an accelerator, 3-8 parts of oxidized polyethylene wax, 0.3-0.6 part of an internal lubricant, 2-10 parts of flame retardant, 5-15 parts of modified calcium carbonate with an average particle size of less than or equal to 0.01 [mu]m, and 15-20 parts of carbon black, wherein a mass ratio of the silicone rubber to the CPVC resin is 1:4-1:6. The invention furtherprovides a method for manufacturing a dry powder fire extinguisher spraying pipe by using the composite material, wherein the spraying pipe integrates excellent elasticity, flexing resistance, high temperature resistance, aging resistance, flame retardancy and compressive resistance, and has high inner surface smoothness so as to greatly reduce the adhesion rate of dry powder on the inner wall.

Description

technical field [0001] The invention relates to a composite material for manufacturing a nozzle of a dry powder fire extinguisher and a method for manufacturing the nozzle with it. Background technique [0002] Dry powder fire extinguishers usually refer to fire-fighting equipment that uses carbon dioxide gas or nitrogen gas as power to spray out the dry powder (fire extinguishing agent) in the cylinder to extinguish the fire. Some existing dry powder fire extinguishers are designed to shorten the effective distance between the nozzle and the ignition point and improve the accuracy of fire extinguishing. , and to increase the convenience of hand-held operation, usually a nozzle is connected to the nozzle valve port, and then the nozzle is installed on the front end of the nozzle. [0003] In actual use, the nozzle pipe is closer to the fire source than the ordinary PVC fire hose used for water delivery, the working temperature is higher, and it needs enough flexibility and f...

AI Technical Summary

Problems solved by technology

However, the smoothness of the inner wall of the current common rubber tube tends to be poor. When in use, the powder tends to adhere to the inner wall of the tube wall and accumulate. Especially for fire extinguishers that are used multiple times, the accumulated powder will cause pressure on the tube To a certain extent, the powder cannot be ejected smoothly

[0007] On the other hand, due to the high cost of rubber materials, purely improving and optimizing rubber materials and formulas will undoubtedly increase the production costs of enterprises.

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