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Phosphorous-series flame-retardant master batch special for polyethylene pipe for coal mine

A polyethylene pipe, phosphorus-based flame-retardant technology, applied to pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as poor dispersion, poor flame retardancy, and rough surface of the pipe, and achieve optimal usability , Improve the surface brightness, the effect of stable quality

Inactive Publication Date: 2011-07-20
山东东宏集团有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, there is no professional phosphorus-based flame-retardant masterbatch suitable for polyethylene pipes used in coal mines in China. The flame-retardant masterbatch used in the production of polyethylene pipes used in coal mines is only brominated flame-retardant masterbatch or polyethylene is not professionally used. The flame retardant masterbatch of the pipe has the disadvantages of poor dispersion, poor flame retardant performance, rough surface of the pipe, and influence on the internal performance indicators of the pipe, etc.

Method used

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Examples

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Effect test

Embodiment Construction

[0012] A special phosphorus-based flame-retardant masterbatch for polyethylene pipes used in coal mines. The weight ratio of raw material components is: 25% red phosphorus, 12% engine oil, 5% calcium oxide, and 68% LLPE.

[0013] Among them, red phosphorus is 70-100% phosphorus content, engine oil is No. 15-80, calcium oxide is active calcium oxide ≥ 93%, whiteness ≥ 85%, 325 mesh residue ≤ 3.0%, activity ≥ 60°C for 3 minutes; LLDPE is low-density linear polyethylene with tensile strength ≥ 10Mpa, elongation at break ≥ 600%, Vicat softening point ≥ 95°C, and melt flow rate above 2g / 10min.

[0014] Model used: twin-screw extruder.

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Abstract

The invention discloses a phosphorous-series flame-retardant master batch special for a polyethylene pipe for a coal mine. The master batch comprises the following raw material components in percentage by weight: 15-40 percent of red phosphorus, 5-20 percent of engine oil, 0.1-10 of calcium oxide and 30-80 percent of LLDPE (Linear Low Density Polyethylene). The invention has the advantages that: the polyethylene pipe for the coal mine produced by using the phosphorous-series flame-retardant master batch special for the polyethylene pipe for the coal mine has high dispersity, so that the quality of the pipe is stable, the flame retardance of the pipe surpasses the V0 standard of the national standard, the surface brightness of the pipe is improved, the tensile strength is larger than 18 MPa, the breaking elongation is larger than 450 percent, and the like; and the pipe has extremely high usability, and is suitable for a double-screw extruder.

Description

technical field [0001] The invention relates to plastics, in particular to a special phosphorus-based flame-retardant masterbatch for polyethylene pipes used in coal mines, which solves the flame-resistance of mine pipes. Background technique. [0002] At present, there is no professional phosphorus-based flame-retardant masterbatch suitable for polyethylene pipes used in coal mines in China. The flame-retardant masterbatch used in the production of polyethylene pipes used in coal mines is only bromine-based flame-retardant masterbatch or polyethylene is not professionally used. The disadvantages of flame retardant masterbatch for pipes are poor dispersion, poor flame retardant performance, rough surface of pipes, and influence on internal performance indicators of pipes. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art, improve the dispersibility of raw material components, make the flame retardancy exceed...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K3/02C08K3/22C08K5/01C08J3/22F16L9/12
Inventor 倪立营张超
Owner 山东东宏集团有限公司
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