Flame-retardant rubber cable material made from phosphorus-nitrogen expansion type flame retardant without halogen and preparation method thereof

Abstract

The invention discloses a flame-retardant rubber cable material made from a phosphorus-nitrogen expansion type flame retardant without halogen. The rubber cable material comprises the following raw materials in parts by weight: 25-60 parts of natural rubber, 40-75 parts of butadiene-styrene rubber, 70-120 parts of IFR, 5-10 parts of white carbon black, 1-2 parts of ziram, 1-5 parts of vulcanizing agent, 6-8 parts of zinc oxide, 1-3 parts of stearic acids and 1-2 parts of antioxidants. The rubber cable material disclosed by invention has the beneficial effects that the cable material is easy to process, the extruded process is good; the compatibility of the basal body of the obtained flame-retardant rubber cable material made from the phosphorus-nitrogen expansion type flame retardant without halogen and compounding agents such as flame retardant is good, and no compounding agent transport exists; the products have excellent flame retardant property, good mechanical property and good low-temperature flexibility.

Description

Technical field [0001] The invention relates to a cable material and a preparation method thereof, in particular to a halogen-free phosphorus-nitrogen intumescent flame retardant rubber cable material and a preparation method thereof. Background technique [0002] At present, halogen-free flame retardant cable materials are usually made of polyolefin plastics with halogen-free flame retardants (such as red phosphorus, aluminum hydroxide, magnesium hydroxide, ammonium polyphosphate, etc.) and other additives. The limiting oxygen index is greater than 30) is not very ideal, and cannot meet the more stringent flame retardant requirements. [0003] Phosphorus-nitrogen intumescent flame retardant (IFR) has good flame retardancy and safety, meets the requirements of health and environmental protection, and is an ideal choice for halogen-free flame retardants. At present, the compatibility and water sensitivity of phosphorus-nitrogen intumescent flame retardants in polyolefin or polystyr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor compatibility and easy migration of phosphorus-nitrogen intumescent flame retardants in polyolefin cable materials, resulting in poor mechanical properties, poor low temperature flexibility, and decreased cold resistance, and to provide a rapidly vulcanized halogen-free flame retardant. Phosphorus-nitrogen intumescent flame retardant flame retardant rubber cable compound, which can significantly improve the comprehensive performance of halogen-free flame retardant cable compound