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Special anti-aging modified master batch for polyethylene tubes

A polyethylene pipe, anti-aging technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve problems such as difficulty in adding, and achieve the effect of improving pollution

Inactive Publication Date: 2011-08-24
山东东宏集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a polyethylene pipe that can prolong the service life of polyethylene pipes, solve the difficulties in the production process of pipes that are difficult to add, have no pollution to the environment and improve internal processing performance Special anti-aging modified masterbatch

Method used

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Embodiment

[0018] Embodiment: A special anti-aging modified masterbatch for polyethylene pipes. The raw material components include the following by weight percentage: 20% HDPE, 50% LLDPE, 25% antioxidant, 2% polyethylene wax, and 3% white oil.

[0019] HDPE is high-density polyethylene, tensile strength ≥ 20Mpa, elongation at break ≥ 400%, Vicat softening point ≥ 100 ℃, melt flow rate 0.1g / 10min or more; LLDPE is low-density linear polyethylene, tensile Tensile strength≥9Mpa, elongation at break≥500%, Vicat softening point≥95℃, melt flow rate above 2g / 10min; antioxidant is tetrakis[β-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionic acid] pentaerythritol ester, molecular weight 1000-1500 and tris (2.4-di-tert-butylphenyl) phosphite, content 99%, acid value ≤ 0.5mgKOH / g; polyethylene wax is low molecular weight Polyethylene wax, molecular weight 2000-4000, melting point above 100°C, viscosity CPS140°C 40MAX; white oil is white mineral oil, kinematic viscosity (40°C) above 14.5mm2 / s, flash p...

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Abstract

The invention relates to a special anti-aging modified master batch for polyethylene tubes, which comprises the following raw materials in percentage by weight: 15-30% of HDPE (high-density polyethylene), 30-70% of LLDPE (linear low-density polyethylene), 15-30% of antioxidant, 0.5-3% of polyethylene wax and 1-5% of white oil. The master batch can be produced by carrying out granulation with a double screw extruder. The oxidation induction time of the polyethylene tube produced by adding 2% of the special anti-aging modified master batch for polyethylene tubes can reach more than 60 minutes, and the estimated service life can reach more than 60 years. The invention can solve the problem of difficulty in addition in the tube production process, does not produce any environmental pollution, and enhances the interior processability and the like.

Description

technical field [0001] The invention relates to plastic pipes, in particular to a special anti-aging modified masterbatch for polyethylene pipes, which mainly prolongs the anti-aging properties of the inner and outer surfaces of polyethylene pipes and prolongs the service life of the pipes by more than 10 years. Background technique [0002] At present, there is no professional anti-aging modified masterbatch suitable for polyethylene pipes in China. The current method for pipe manufacturers to extend the service life of polyethylene pipes is to add antioxidant 1010. The disadvantages are difficult to add, large dust (pollution to the environment), Treating the symptoms but not the root cause (ignoring internal factors) and so on. The special anti-aging modified masterbatch for polyethylene pipes not only solves the difficulty of adding in the pipe production process, does not cause any pollution to the environment, but also solves the internal processing performance. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K5/134C08K5/526C08J3/22F16L9/12
Inventor 倪立营孔凡河张超
Owner 山东东宏集团有限公司
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