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Materials for non-excavation cable protection pipes and cable protection pipes

A cable protection tube and trenchless technology, which is applied in the field of trenchless cable protection tube materials and trenchless cable protection tubes, can solve the problem of high cost and price of MPP tubes, achieve good rigid-flexible comprehensive performance, and save resources , the effect of material cost reduction

Inactive Publication Date: 2016-01-20
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with PE pipes, the cost price of MPP pipes is higher

Method used

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  • Materials for non-excavation cable protection pipes and cable protection pipes
  • Materials for non-excavation cable protection pipes and cable protection pipes
  • Materials for non-excavation cable protection pipes and cable protection pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of material for non-excavation cable protection pipe

[0021] (1) Take raw materials by weight ratio as follows:

[0022]

[0023]

[0024] MPP is PP recycled material, the brand is 3015G, produced by Shanghai Hongsu Trading Co., Ltd.;

[0025] The LDPE brand is 2102TX00, manufacturer: SABIC;

[0026] Described initiator is dicumyl peroxide;

[0027] The auxiliary agent is styrene (St), as an ethylenic monomer, which provides hydrogen atoms and inhibits the degradation of MPP.

[0028] The antioxidant is antioxidant 1010, the CAS number of antioxidant 1010 is: 6683-19-8, and the molecular formula is: C 73 h 108 o 12 , chemical name: tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, brand: BASF (ciba ciba);

[0029] The grade of the color masterbatch is E2619.

[0030] (2) Mix MPP, LDPE and masterbatch at high speed for 3 minutes at 1000-1500 rpm, then add initiator, auxiliary agent and antioxidant, and continue m...

Embodiment 2

[0033] Preparation of material for non-excavation cable protection pipe

[0034] The difference from Example 1 is:

[0035]

[0036] The LDPE grade is 2420H, manufacturer: Maoming Petrochemical;

[0037] The auxiliary agent is triallyl isocyanate (TAIC), which is a multifunctional monomer and inhibits the degradation of MPP. Used premixing and extruding process are identical with embodiment 1.

Embodiment 3

[0039] Preparation of material for non-excavation cable protection pipe

[0040] The difference from Example 1 is:

[0041]

[0042] The LDPE grade is 2420H, manufacturer: Maoming Petrochemical;

[0043] The auxiliary agent is trimethylolpropane trimethacrylate (TMPTMA), which is a multifunctional monomer and inhibits the degradation of MPP. Used premixing and extruding process are identical with embodiment 1.

[0044] The properties of the materials obtained in the above-mentioned Examples 1-3 are shown in Table 1.

[0045] It can be seen from Table 1 that, compared with PP recycled materials and traditional MPP materials for cable protection pipes, the non-excavation type cable protection pipe material prepared by the present invention has good comprehensive performance of rigidity and flexibility.

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Abstract

The invention relates to a material for a non-excavation type cable protection pipe and a cable protection pipe, wherein the material is formed by mainly compounding modified polypropylene (MPP) and LDPE (low-density polyethylene), the modified polypropylene is a polypropylene reclaimed material, and the material comprises the following components in percentage by weight: 75-85 percent of MPP, 10-15 percent of LDPE, 0.1-1 percent of initiator, 0.5-6 percent of accessory ingredient, 0.1-0.5 percent of antioxidant and 1.5-2.5 percent of color masterbatch. Compared with the traditional MPP material for the cable protection pipe, the material for the non-excavation type cable protection pipe has the characteristics of good rigid-flexible combination property, low raw material cost and good market application prospect.

Description

technical field [0001] The invention relates to a material for a non-excavation type cable protection pipe and a non-excavation type cable protection pipe formed therefrom. Background technique [0002] With the introduction of non-excavation technology, major cities have adopted a large number of underground non-excavation technology to lay plastic cable pipes to transmit electricity, and the demand has increased dramatically. At present, the non-excavation type MPP cable protection tube occupies a large proportion in the market. Modified polypropylene (MPP) pipe has excellent characteristics such as light weight, good comprehensive performance of rigidity and flexibility, high welding strength, and good high and low temperature resistance. However, compared with PE pipes, the cost price of MPP pipes is higher. In the production process, how to further reduce the cost on the basis of maintaining the performance of the existing MPP pipe is a key task. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00C08L51/06C08K5/134
Inventor 徐世爱朱业玲
Owner EAST CHINA UNIV OF SCI & TECH
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