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HDPE double-wall corrugated pipe and production process thereof

A technology of double-wall bellows and carbon nanotubes, which is applied in the field of bellows, can solve the problems of poor ring stiffness and creep resistance of pipes, poor ring stiffness and creep resistance, and affect the service life of products, so as to improve performance Inhomogeneity, enhanced ring stiffness and creep resistance, antistatic long-lasting effect

Active Publication Date: 2019-06-14
陕西飞天管业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] HDPE double-wall corrugated pipe has obvious advantages in low temperature toughness, but due to the characteristics of PE material, its rigidity is worse than that of cement pipe, and the ring stiffness and creep resistance of the pipe are worse than that of PVC pipe. During long-term use, it is easy to be affected by gravity. Deformation, affecting the service life of the product
[0004] Therefore, it is urgent to develop a bellows that can improve the ring stiffness and creep resistance of the PE material itself to meet broader needs.

Method used

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  • HDPE double-wall corrugated pipe and production process thereof
  • HDPE double-wall corrugated pipe and production process thereof
  • HDPE double-wall corrugated pipe and production process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] HDPE double-wall corrugated pipe, including the following components by weight, 120kg HDPE, 120kg polypropylene, 4kg talcum powder, 20kg antistatic masterbatch, 50kg impact-resistant modified masterbatch, 10kg coupling agent, 10kg EPDM Rubber, 4kg carbon nanotubes, 10kg color masterbatch.

[0046] The production process of HDPE double corrugated pipe includes the following preparation process:

[0047] Step 1: Weigh the raw materials according to the parts by weight, stir and mix them uniformly to obtain the raw material mixture;

[0048] Step 2: The raw material mixture is melted and extruded by a twin-screw extruder and molded to obtain the initial product. The temperature of the first stage of the twin-screw extrusion process is controlled at 80-100°C, and the temperature of the second stage to the sixth stage is controlled At 175-200°C;

[0049] Step 3: After the initial product is pulled up, it is cut according to the specification to obtain the intermediate prod...

Embodiment 2

[0056] The difference between Example 2 and Example 1 lies in the content of each component, see Table 1 for specific components.

Embodiment 3

[0058] The difference between Example 3 and Example 1 lies in the difference in the content of each component and the difference in preparation parameters, see Table 1 for specific components.

[0059] Choose 52% isopropanol aqueous solution in the antistatic masterbatch. The drying temperature was 44°C.

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Abstract

The invention relates to an HDPE double-wall corrugated pipe and a production process thereof. The double-wall corrugated pipe is prepared from the following components in parts by weight: HDPE, polypropylene, talcum powder, antistatic masterbatch, anti-impact modified masterbatch, coupling agents, ethylene-propylene-diene monomers, carbon nanotubes and color masterbatch. The production process comprises the following steps: step 1, weighing the raw materials according to parts by weight, then stirring and mixing uniformly to obtain a raw material mixture; step 2, melting the raw material mixture, then extruding through a twin-screw extruder, and then forming through a die to obtain a primary product; step 3, drawing the primary product, and then cutting the primary product according to aspecification to obtain an intermediate product; and step 4, flaring the intermediate product to obtain the double-wall corrugated pipe. According to the HDPE double-wall corrugated pipe and the production process thereof, polypropylene, the anti-impact modified masterbatch, ethylene-propylene-diene monomers and the carbon nanotubes are added into the HDPE double-wall corrugated pipe, so that thedefects of the HDPE double-wall corrugated pipe are overcome, and the ring stiffness and the creep resistance of the corrugated pipe are improved.

Description

technical field [0001] The invention relates to the technical field of bellows, in particular to an HDPE double-wall bellows and a production process thereof. Background technique [0002] At present, municipal sewage pipelines include new types of pipelines such as cement culvert pipes, HDPE double-wall corrugated pipes, and vacuum wound pipes. Cement pipes have been gradually replaced by plastic pipes. HDPE double-wall corrugated pipes are widely used in the current market for related municipal sewage pipelines. [0003] HDPE double-wall corrugated pipe has obvious advantages in low temperature toughness, but due to the characteristics of PE material, its rigidity is worse than that of cement pipe, and the ring stiffness and creep resistance of the pipe are worse than that of PVC pipe. During long-term use, it is easy to be affected by gravity. Deformation will affect the service life of the product. [0004] Therefore, it is urgent to develop a bellows that can improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/16C08L23/08C08K3/34C08K3/04C08K3/26C08K5/10C08K13/02B29C48/10B29C48/00B29C57/02B29L23/00
Inventor 王颐其
Owner 陕西飞天管业科技有限公司
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