Low-smoke halogen-free flame-retardant rubber for cables and method thereof

Abstract

The invention discloses a low-smoke halogen-free flame-retardant rubber for cables and a preparation method thereof. The material is made of the following raw materials in parts by weight: 20-25 parts of low-density polyethylene, 15-25 parts of ethylene-vinyl acetate copolymer 20 parts, 12-18 parts of TPU thermoplastic elastomer, 45-55 parts of mixed thermoplastic phenolic resin, 45-55 parts of modified nano-magnesium hydroxide, 45-55 parts of microencapsulated red phosphorus, 1-2 parts of cross-linking agent, 1~2 parts of calcium stearate, 1~2 parts of stearic acid, 0.2~0.4 parts of ultraviolet absorber UV~531, 8~15 parts of smoke suppressant, 20~40 parts of compatibilizer, 7~10 parts of processing aid 3-6 parts of antioxidant, 1-3 parts of anti-termite agent, appropriate amount of deionized water. The invention has excellent flame retardancy and non-flammability; when burning, the amount of smoke is very small, no toxic gas is produced, no corrosive gas is produced, and at the same time it has good low temperature resistance and ultraviolet resistance.

Description

technical field [0001] The invention relates to the technical field of cable production materials, in particular to a low-smoke halogen-free flame-retardant rubber for cables and a method thereof. Background technique [0002] With the rapid development of the global economy and the enhancement of human awareness of environmental protection, the requirements for the quality and performance of wires and cables in various fields are getting higher and higher, and there are more and more fires caused by the aging of wires and cables. How to reduce the fire Low smoke, halogen-free, flame retardant, and environmental protection have also become the development direction of the wire and cable industry. Among them, the demand for halogen-free low-smoke flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke flame-retardant cable materials is to add a large amount of magnesium hydroxide or aluminum hydroxide to polyolefin substrate...

AI Technical Summary

Problems solved by technology

Among them, the demand for halogen-free low-smoke flame-retardant cable materials is increasing. At present, most of the production of halogen-free low-smoke flame-retardant cable materials is to add a large amount of magnesium hydroxide or aluminum hydroxide to polyolefin substrates to achieve flame retardancy. However, the addition of a large amount of inorganic materials affects the physical and mechanical properties and processing performance of the cable material. Its softness, poor weather resistance, oil resistance, and low temperature resistance at room temperature are not very good.

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