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Special adhesive resin for wire-frame-reinforced polyethylene tube and production method thereof

A technology of polyethylene pipe and steel wire skeleton, which is applied in the direction of pipeline connection arrangement, grafted polymer adhesive, pipe/pipe joint/pipe fitting, etc., which can solve the problems of difficulty in use, easy occurrence of air bubbles, and low peel strength. Achieve the effects of reducing production and use costs, increasing adhesion, and improving ease of processing

Active Publication Date: 2012-11-21
SHANDONG DONGHONG PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no professional adhesive resin suitable for steel wire frame reinforced polyethylene pipes in China. The bonding resin used for steel wire frame reinforced polyethylene pipes is a single-stored graft. The disadvantages are high cost, low peel strength, Difficult to use, prone to bubbles, etc.

Method used

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  • Special adhesive resin for wire-frame-reinforced polyethylene tube and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment:: a special adhesive resin for steel wire skeleton reinforced polyethylene pipes, raw material composition weight ratio: HDPE70%, LLDPE20%, maleic anhydride 2%, dicumyl peroxide crosslinking agent 0.1%, acetone 0.1%.

[0018] Its production process includes the following steps:

[0019] First mix maleic anhydride and peroxide evenly;

[0020] Add acetone, then stir evenly to form a small material, and store it at room temperature at a temperature of 10°C-50°C for more than 10 hours. This process can make maleic anhydride, peroxide and acetone pre-react;

[0021] Add HDPE and LLDPE together with the above small ingredients into the mixer and stir for 1.5-10 minutes;

[0022] The above-mentioned mixture is sent to a twin-screw machine for grafting reaction and granulation, the melt temperature is controlled at 200°C-240°C, and the residence time of the material in the barrel is 30-240 seconds.

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Abstract

The invention relates to a special adhesive resin for a wire-frame-reinforced polyethylene tube and a production method thereof. The special adhesive resin for a wire-frame-reinforced polyethylene tube is mainly used for bonding the outer layer, wire and inner layer of a wire-mesh-frame-reinforced polyethylene tube. The special adhesive resin for a wire-frame-reinforced polyethylene tube is prepared from the following raw materials in percentage by weight: 30-90% of HDPE (high-density polyethylene), 8-40% of LLDPE (linear low-density polyethylene), 0.1-10% of maleic anhydride, 0.01-1% of peroxide crosslinking agent and 0.01-1% of acetone. The production method comprises the following steps: carrying out pre-reaction on the maleic anhydride, peroxide and acetone, mixing with the HDPE and LLDPE, and carrying out thermal granulation. By using the product provided by the invention, the peel strength among the outer layer, wire and inner layer of the wire-mesh-frame-reinforced polyethylenetube is up to more than 500N / 25mm.

Description

technical field [0001] The invention relates to plastic pipes, in particular to a special adhesive resin for steel wire skeleton reinforced polyethylene pipes, which is mainly used for the bonding between the steel wire skeleton reinforced polyethylene pipe outer layer, steel wire and inner layer. Background technique [0002] At present, there is no professional adhesive resin suitable for steel wire frame reinforced polyethylene pipes in China. The bonding resin used for steel wire frame reinforced polyethylene pipes is a single-stored graft. The disadvantages are high cost, low peel strength, Difficult to use, prone to bubbles, etc. Contents of the invention [0003] In order to overcome the defects of the prior art, reduce the cost of production and use, improve the peeling strength, be easy to use, prevent the occurrence of air bubbles, etc., the present invention provides a special adhesive resin for steel wire skeleton reinforced polyethylene pipes and its manufactu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02C09J151/06B29B9/06B29C47/92F16L47/02B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 倪立营孔凡河张超
Owner SHANDONG DONGHONG PIPE IND
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