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MPP power cable protecting tube

A power cable and protection tube technology, applied in the field of MPP power cable protection tube, can solve the problems of low tensile strength, easy to become brittle, poor toughness, etc., and achieve the effect of improving comprehensive performance and improving impact performance.

Inactive Publication Date: 2018-01-05
SHAOXING RENTONG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the modified polypropylene bellows formula for electric power has the following disadvantages: although the new modified polypropylene pipe has high ring stiffness and good heat resistance, it does not toughen the modified polypropylene, resulting in poor toughness of the product. Low tensile strength, easy to become brittle and crack when used,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: An MPP power cable protection tube is made of modified polypropylene material using a plastic extruder.

[0027] Weigh 2 parts of silicon dioxide by weight and dissolve it in sodium silicate solution, weigh 10 parts of calcium carbonate to make a calcium carbonate suspension, raise the temperature of the obtained sodium carbonate suspension to 80°C, and then dissolve the obtained sodium silicate Add the solution evenly into the sodium carbonate suspension within 3 hours, adjust and maintain the pH of the suspension with hydrochloric acid = 9, and then age for 3 hours after adding, filter and dry at 100°C, sieve (250mesh), that is Nanocomposite particles are obtained. After raising the temperature of the obtained nanocomposite particles in an emulsifier, a silane coupling agent was added and stirred at 60° C. for 1 hour.

[0028] Weigh 65 parts of homopolypropylene, 10 parts of maleic anhydride-grafted polypropylene, 4.4 parts of treated nanocomposite part...

Embodiment 2

[0029] Embodiment 2: According to the contents of various components listed in Table 1 below, the method of Example 1 was repeated, and the test results were listed in Table 1.

Embodiment 3

[0030] Embodiment 3: According to the contents of various components listed in Table 1 below, the method of Example 1 was repeated, and the test results were listed in Table 1.

[0031] Embodiment 3: According to the contents of various components listed in Table 1 below, the method of Example 1 was repeated, and the test results were listed in Table 1.

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PUM

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Abstract

The invention discloses an MPP power cable protecting tube. The MPP power cable protecting tube is prepared from modified polypropylene, wherein the modified polypropylene comprises the following components in percentage by mass: 65-80% of polypropylene, 15-25% of polyolefin elastomer, 3-10% of nano composite particle and 0.1-2% of beta crystal nucleating agent, wherein the nano composite particleis a calcium carbonate particle of which the surface a silicon dioxide particle adheres to. The MPP power cable protecting tube has the following advantages and effects: by using a multielement blended system formed by the polypropylene, the polyolefin elastomer and the nano composite particle, the polyolefin elastomer has a toughening effect on the polypropylene; the nano composite particle combines the effects of the silicon dioxide particle and the calcium carbonate particle, thereby improving the tensile strength, impact strength and ring stiffness of the modified polypropylene, and achieving a further toughening effect; and after the beta crystal nucleating agent is added, the beta crystal nucleating agent and the calcium carbonate particle achieve a synergistic effect, so that the polypropylene changes from the alpha crystal form to the beta crystal form, and the impact property of the modified polypropylene is further improved, thereby improving the comprehensive properties ofthe MPP power cable protecting tube prepared from the modified polypropylene.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to an MPP power cable protection pipe. Background technique [0002] The MPP pipe uses modified polypropylene as the main raw material, which has the characteristics of high temperature resistance and external pressure resistance, and is suitable for high-voltage transmission line and cable pipes above 10KV. [0003] The Chinese patent "A Novel Modified Polypropylene Pipe and Its Preparation Method" with the publication number CN104725725A discloses a new type of modified polypropylene pipe, which includes the following components in parts by weight: 15-30 parts of polypropylene, nano 2-5 parts of calcium carbonate, 1-3 parts of mica powder, 1-3 parts of nano-titanium oxide, 5-8 parts of dispersant, 2-6 parts of compatibilizer, and 1-5 parts of anti-aging agent. . [0004] However, the modified polypropylene bellows formula for electric power has the following disadvantages: although ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/06C08K9/06C08K3/36C08K3/26C08K5/098H01B3/44H01B7/18
Inventor 徐植仁董超徐才涛杨迪徐才达徐丹丹
Owner SHAOXING RENTONG PLASTIC CO LTD
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