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Trenchless corrugated pipe special for electric power and preparation method thereof

An electric bellows, trenchless technology, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of insufficient heat dissipation and high climate requirements, and achieve the effect of eliminating quality risks, high climate requirements, and fast installation speed

Active Publication Date: 2013-09-18
福建晟扬管道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the installation of MPP pipes has higher requirements on the site, construction equipment and climate, and the heat dissipation effect is not good enough

Method used

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  • Trenchless corrugated pipe special for electric power and preparation method thereof

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preparation example Construction

[0050] The preparation method of the non-excavation special power bellows (FATP) of the present invention comprises the following steps:

[0051] 1) Feeding and drying: put polypropylene PP, nylon PA, compatibilizer, coupling agent, antioxidant, anti-ultraviolet absorber, lubricant, toner into the hopper of the extruder, mix evenly and dry;

[0052] 2) Mixing and extrusion: feed the dried raw materials into a twin-screw extruder with a screw length-to-diameter ratio of 42-46:1, knead the raw materials into a molten state at 180-230°C, and then feed them on the side Add glass fiber to the mouth, melt all the raw materials, and then extrude the molten raw materials at the extrusion temperature of 185-235°C, the extrusion pressure is 5-10mpa, and the extrusion vacuum is -0.05~-0.03mpa , the pulling speed of the extruded pipe is 1-3m / min;

[0053] 3) Cooling and molding: After extrusion, the product is cooled with water, and the cooling temperature is 15-25°C;

[0054] 4) Cuttin...

Embodiment 1

[0057] First weigh the raw materials according to the following formula:

[0058] Polypropylene 6.5kg;

[0059] Nylon 11 2.0 kg;

[0060] Alkali-free long glass fiber 0.7 kg;

[0061] Compatibilizer maleic anhydride grafted polypropylene 0.5 kg;

[0062] Coupling agent γ-aminopropyltriethoxysilane 0.06 kg;

[0063] Antioxidant tetraerythritol ester 0.05 kg;

[0064] Anti-ultraviolet absorber chlorobenzotriazole 0.05 kg;

[0065] Lubricant vinyl bis stearamide 0.04 kg;

[0066] Orange powder 0.1kg.

[0067] The preparation process of product of the present invention is:

[0068] 1) Loading and drying: Polypropylene PP, nylon 11, compatibilizer maleic anhydride grafted polypropylene, coupling agent γ-aminopropyltriethoxysilane, antioxidant tetraerythritol ester, anti-ultraviolet Absorbent chlorobenzotriazole, lubricant vinyl bis stearic acid amide, and orange powder are put into the hopper of the extruder to mix evenly and dry;

[0069] 2) Mixing and extrusion: feed the d...

Embodiment 2

[0074] First weigh the raw materials according to the following formula:

[0075] Polypropylene 7.5 kg;

[0076] Nylon 12 1.5 kg;

[0077] Alkali-free long glass fiber 0.2 kg;

[0078] Compatibilizer maleic anhydride grafted polypropylene 0.5 kg;

[0079] Coupling agent γ-(2,3-glycidoxy)propyltrimethoxysilane 0.23 kg;

[0080] Antioxidant stearyl propionate 0.01 kg;

[0081] Anti-ultraviolet absorber 2-hydroxy-4-octyloxybenzophenone 0.01 kg;

[0082] Lubricant vinyl bis stearic acid amide 0.01 kg;

[0083] Orange powder 0.04 kg.

[0084] The preparation process of product of the present invention is:

[0085] 1) Loading and drying: Polypropylene PP, nylon 12, compatibilizer maleic anhydride grafted polypropylene, coupling agent γ-(2,3-epoxypropoxy)propyltrimethoxysilane, Antioxidant stearyl propionate, anti-ultraviolet absorber 2-hydroxyl-4-octyloxybenzophenone, lubricant vinyl distearic acid amide, and orange-red powder are put into the hopper of the extruder to mix e...

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Abstract

The invention discloses a trenchless corrugated pipe special for electric power. The trenchless corrugated pipe comprises the following raw materials in percentage by mass: 65 to 75 percent of polypropylene, 15 to 20 percent of nylon, 2 to 7 percent of glass fibers, 1 to 5 percent of compatilizer, 0.2 to 2.5 percent of coupling agent, 0.1 to 0.5 percent of antioxidant, 0.1 to 0.5 percent of anti-ultraviolet absorber, 0.1 to 0.4 percent of lubricating agent and 0.4 to 1.0 percent of toner. A method for preparing the trenchless corrugated pipe special for electric power (FATP) comprises the following steps of: 1) loading and drying; 2), mixing and extruding; 3) cooling for forming; 4) cutting and coiling; and 5) inspecting for warehousing. According to the trenchless corrugated pipe, the polypropylene is modified by introducing the nylon material reasonably, so that the heat resistance, tensile strength and abrasive resistance of the product are improved; and the glass fibers in a certain ratio are added to improve the ring plate thermocompression force of the product, and the comprehensive performance indexes of the product are improved to a certain degree.

Description

technical field [0001] The invention relates to the field of bellows, in particular to a non-excavation special power bellows and a preparation method thereof. Background technique [0002] The elongation rate of PE (polyethylene) pipe is more than 20 times that of steel pipe, and six and a half times that of PVC (polyvinyl chloride) pipe. Therefore, although the strength of PE pipe is low, its elongation at break is very high, and the extensibility very strong. When the ground subsides or the earth's crust changes when an earthquake occurs, PE pipes can produce resistance to deformation without breaking, so PE pipes are generally used as gas pipelines and water pipes at present. When PE pipes are used for power pipes, because power cable pipes operate at a high temperature of about 70 degrees for a long time, and must bear the external pressure of underground muddy water, the working environment is different from water pipes and gas pipes. However, PE pipes operate at a te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L77/02C08L51/06C08K7/14F16L11/11B29C47/92B29C48/92
CPCB29C48/09B29C48/13B29C48/40B29C48/625B29C48/911B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895B29C2948/92923
Inventor 何龙新
Owner 福建晟扬管道科技有限公司
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