Oil-proof low-smoke halogen-free flame-retardant heat shrinkable label sleeve as well as preparation method and application thereof

Abstract

The invention discloses an oil-proof low-smoke halogen-free flame-retardant heat shrinkable label sleeve and a preparation method thereof. The label sleeve consists of the following components in parts by weight: 60 to 80 parts of matrix resin, 15 to 25 parts of linear low-density polyethylene, 5 to 15 parts of polymer compatilizer, 32 to 70 parts of phosphorous nitrogen series expansible halogen-free flame retardant, 0 to 30 parts of inorganic flame retardant, 3 to 5 parts of titanium white powder, 1 to 3 parts of lubricant, 0.8 to 2 parts of antioxidant and 1 to 2 parts of sensitizer. The preparation method comprises the following steps of: mixing the raw materials uniformly, extruding with a double-screw extruder, drawing, air cooling and granulating; extruding into a pipe through a screw extruder with a neck mould and a core mould, radiating, expanding, stretching, cooling, sizing, printing the label by using a heat transfer printer to obtain the oil-proof low-smoke halogen-free flame-retardant heat shrinkable label sleeve. The preparation method is simple; and the product has excellent flame-retardant performance and good oil resistance, produces little smoke, permanently preserves the label, and keeps good mechanical property, electric insulating performance and heat resistance.

Description

technical field [0001] The invention relates to a flame-retardant marking sleeve mainly using ethylene-ethyl acrylate copolymer (EEA) as the basic resin, in particular to an oil-resistant, low-smoke, halogen-free, flame-retardant heat-shrinkable marking sleeve and its preparation method and application. Background technique [0002] Since July 1, 2008, my country has officially implemented the management system of fire and flame retardant signs in public places. Flame retardant products must meet the mandatory national standard "Requirements and Marking of Flame Retardant Products and Components in Public Places" (GB20286-2006 ). Now almost all information and power cable systems of modern military equipment and other cable systems in the electronics and power industries have marking requirements, and there are many marking methods, such as label paper, plastic transparent objects, metal rings, painted characters, etc. Obvious shortcomings, some are difficult to mass-produce...

AI Technical Summary

Problems solved by technology

For the existing marking sleeves on the market, the flame retardants mostly use halogen systems, which do not conform to the development trend in the field of environmental protection. At the same time, the amount of smoke generated during the combustion process is large, which poses a huge threat to personal safety at the fire scene

In some fields of application, the oil resistance performance of the marking sleeve is high, but there are few oil-resistant halogen-free flame-retardant marking sleeves on the market

At the same time, the permanent preservation and recognizability of logo characters are important indicators to measure the stability of logos. However, there are very few published and authorized patents for inventions with logos, and most of them involve preparation methods, and few involve logo stability.

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