Halogen-free flame-retardant anti-drip thermoplastic polyurethane (TPU) material

Abstract

The invention discloses a halogen-free flame-retardant anti-drip thermoplastic polyurethane (TPU) material. The halogen-free flame-retardant anti-drip TPU material is prepared from the following components in part by weight: 20 to 60 parts of TPU, 11 to 23 parts of SEBS, 18 to 25 parts of flame retardant, 5 to 25 parts of white oil, 1.3 to 2 parts of anti-drip agent and others. The halogen-free flame-retardant anti-drip TPU material solves the problems that the material without the anti-drip function is easy to separate out, the surface is susceptible to scraping white, scaling and glue removal, the processing difficulty is high and the surface is seedy and not smooth, swinging and adhesion occurs, and has low price.

Description

technical field [0001] The invention relates to the technical field of cable material production, in particular to a halogen-free flame-retardant anti-drip TPU material for wire and cable sheaths. Background technique [0002] Since 2008, people who are a little sensitive in the field of electric wires have felt the trend of halogen-free flame retardant blowing around the world, and now it is becoming more and more intense. TPU provides tear, abrasion and flex characteristics. High and low temperature resistance is the key to cable performance. In addition, it is resistant to chemicals, hydrolysis and anti-microbial decomposition, and is easy to process and easy to dye. Therefore, high-grade cables, such as control cables and power cables, use TPU to protect the coating materials of cables with complex designs, and their uses are becoming more and more extensive. In the years before 2008, they were all halogen-free materials rather than halogen-free and flame-retardant mat...

AI Technical Summary

Problems solved by technology

However, the current TPU materials do not have the anti-drip function, and the price is high, easy to precipitate, the surface is easy to scratch white, peel off the glue, the processing is difficult, the surface is grainy and numb, not smooth, shaking or bonding

[0004] TPU has many advantages such as good elasticity, mechanical strength, oil resistance, ozone resistance, excellent low temperature performance, etc., but its disadvantages are also many, mainly including: poor aging resistance, poor flame retardancy, low wet surface friction coefficient, easy to slip, Poor processing performance and high cost

TPU itself has no flame retardant properties. When burning in the air, the flame is very violent and accompanied by thick black smoke, and has serious dripping phenomenon.