Halogen-free flame-retarding resin composition, insulation wire, and cable

Abstract

The invention provides a halogen-free flame-retarding resin composition, an insulation wire, and a cable. The halogen-free flame-retarding resin composition can maintain extrusion property, thermal impact property and flexibility even under large quantity of usage of a metal hydrate, and flame retarding performance improved. The halogen-free flame-retarding resin composition includes, on the basis of 100 parts by mass of polyolefin resin, 100-250 parts by mass of Al(OH)3 which has been subjected to surface treatment with silane, and 5-50 parts by mass of more than one selected from melamine cyanurates, zinc stannate, and amorphous silicon dixoide, wherein the polyolefin resin includes more than two ethylene-vinyl acetate copolymers being more than 55 parts in mass in total, the average vinyl acetate content of the more than two ethylene-vinyl acetate copolymers is 37.5-45 mass%, average MFR being 10-50 (gram per ten minutes).

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant resin composition and an insulated wire and cable having a coating layer formed of the resin composition. Background technique [0002] The flexible vinyl chloride resin composition is inexpensive and excellent in processability, and its flexibility can be freely changed depending on the amount of plasticizer added. Furthermore, since they have self-extinguishing properties and relatively good mechanical properties, soft vinyl chloride resin compositions are widely used in building materials and daily necessities, including electric wire covering materials. [0003] However, the soft vinyl chloride resin composition has problems of its own embrittlement and contamination of peripheral parts due to the migration of the plasticizer. In addition, since it contains chlorine as a halogen, when it is incinerated, harmful secondary English and other organic compounds. Moreover, there are stil...

AI Technical Summary

Problems solved by technology

[0003] However, the soft vinyl chloride resin composition has problems of its own embrittlement and contamination of surrounding parts due to the migration of the plasticizer.

In addition, since it contains chlorine as a halogen, when it is incinerated, harmful secondary English and other organic compounds

Moreover, there are still many problems, such as sometimes using dangerous lead compounds that pollute the environment as stabilizers, etc.

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