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Prestressed plastic corrugated pipe and manufacturing method thereof

A bellows, prestressing technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problem that the performance of the pipes does not meet the required requirements, the prestressed tendons are easily corroded, and the concrete adhesion is not good. and other problems, to achieve the effect of good insulation, high strength and corrosion prevention

Inactive Publication Date: 2009-12-16
TIANJIN SHUAIYAO PRODUCTIVITY PROMOTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its production cost is high, its adhesion with concrete is not good, and the prestressed tendons are easily corroded; the main reason is that the equipment is backward and the process control is limited, so the performance of the pipe cannot meet the required requirements

Method used

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  • Prestressed plastic corrugated pipe and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 50 parts of recycled plastics; 30 parts of pure recycled plastics; 5 parts of preservative BHT; 2 parts of anti-aging agent phosphorothioate; 5 parts of adhesive acrylic resin; 1 part of yellow pigment.

[0034] Production method: first put the above raw materials into the extruder (1) for high-speed melting kneading and mixing for 10 minutes, extrude from the extruder (1) into the extrusion mold (2), and the mold No. 2 can be replaced with different molds ( It is determined according to the diameter of the product), extruded and plasticized at 170°C and processed in the molding machine (3), and reprocessed by heating to 200°C through the heating and reshaping device (4) according to requirements, Then it is cooled to 50° C. by the cooling device (5) for cooling and setting, and the pipe is pulled by (6) at a pulling speed of 3 m / min. Improve its tensile stress, and finally cut the required length by sawing machine (7). 99% of the data of qualified products are determi...

Embodiment 2

[0036] The raw material composition of the prestressed plastic corrugated pipe: 50 parts of recycled plastics; 40 parts of pure recycled plastics; 2 parts of preservative sodium benzoate; 4 parts of anti-aging agent organophosphate (ammonium thiophosphate); 1 part of resin X-158; 2 parts of red pigment.

[0037] Production method: first add the above raw materials into the extruder (1) for high-speed melting kneading and mixing for 30 minutes, and then extrude from the extruder (1) into the extrusion mold (2). Die No. 2 can be replaced with different molds (Determined according to the diameter of the product), extruded and plasticized at 85°C and formed in the molding machine (3), heated at 250°C as required, and the roundness is reprocessed by the reshaping device (4), and then passed The cooling device (5) cools in a water bath at 70°C to shape the pipe, and pulls the pipe through (6), controlling the pulling speed to 3m / min to increase its tensile stress, and finally cuts i...

Embodiment 3

[0039] The raw material composition of prestressed plastic bellows: 40 parts of recycled plastics; 50 parts of pure recycled plastics; 5 parts of preservative calcium propionate; 3 parts of anti-aging phenol; binder bisphenol A polyester resin F-1976 parts; 1 part of blue pigment.

[0040]Production method: first add the above raw materials into the extruder (1) for high-speed melting kneading and mixing for 20 minutes, extrude from the extruder (1) into the extrusion mold (2), and the mold No. 2 can be replaced with different molds ( It is determined according to the diameter of the product), extruded and plasticized at 175°C and formed in the molding machine (3), heated at 220°C as required, and the roundness is reprocessed by the reshaping device (4), and then cooled The device (5) is cooled in a water bath at 50°C to set the shape, and the pipe is pulled by (6), and the pulling speed is controlled to be 2m / min. Improve its tensile stress, and finally cut the required leng...

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Abstract

The invention provides a prestressed plastic corrugated pipe and a manufacturing method thereof. The prestressed plastic corrugated pipe comprises 30 parts to 50 parts of recycled regenerated plastic, 30 parts to 60 parts of recycled regenerated plastic, 30 parts to 50 parts of pure regenerated plastic, 2 parts to 8 parts of antiseptic agent, 1 part to 4 parts of antiaging agent, 1 part to 6 parts of adhesive and 0.1 part to 3 parts of pigment. The manufacturing method comprises the steps: adding formula materials into an extruding machine to carry out high-speed melting and kneading milling for 10 minutes to 30 minutes; extruding the formula materials into an extruding mould by the extruding machine; extruding, plasticizing and moulding the formula materials in a moulding machine at the temperature of 170 DEG C to 185 DEG C; reprocessing a circular degree by a reheating and moulding device; then, cooling and forming the formula materials by a cooling device; drawing tubing to increase the stretching stress; and finally, cutting as needed. The prestressed plastic corrugated pipe is mainly used for the departments of civicism, water conservancy, post, telecommunications, and the like, can be used as a drain pipeline and is arranged on the water transmission position of a highway overpass, a viaduct and a railway bridge.

Description

technical field [0001] The invention belongs to the technical field of application of building materials, and relates to a novel pore-forming material, in particular to a prestressed plastic corrugated pipe and a preparation method thereof. . Background technique [0002] With the continuous development of the building materials industry and the continuous advancement of construction technology, a plastic corrugated pipe that replaces the metal spiral pipe is entering the field of prestressed engineering. This is due to the fact that many prestressed structures are exposed to severe external influences, de-icing salt or salt water. The prestressed tendons may be subject to corrosion when the post-tensioned members are due to the collapse of the waterproof layer, water leakage from micro-cracks, and blockage or failure of drainage facilities. The "Grouting of Prestressed Tendons" in "FIP Construction Guidelines (1990)" pointed out that metal pipes have no permanent anti-cor...

Claims

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Application Information

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IPC IPC(8): F16L9/12
Inventor 刘耀俭
Owner TIANJIN SHUAIYAO PRODUCTIVITY PROMOTION CO LTD
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