阅读说明：本技术 一种改性mpp电缆保护管 (Modified MPP cable protection pipe ) 是由 方明堂 张美龙 于 2021-11-11 设计创作，主要内容包括：本发明涉及电缆保护管技术领域,尤其为一种改性MPP电缆保护管,包括聚丙烯、色带配料、高密度聚乙烯、粉煤灰、润滑型抗冲改性剂、增韧剂、偶联剂、阻燃剂、抗氧剂和相容剂,各组成成份按质量份数计：聚丙烯100～200份、色带配料5～15份、高密度聚乙烯100～130份、粉煤灰30～40份、润滑型抗冲改性剂10～20份、增韧剂10～20份、偶联剂70～120份、阻燃剂10～30份、抗氧剂30～40份和相容剂20～40份,通过高密度聚乙烯、增韧剂、偶联剂和相容剂能使整体的冲击强度得到较大提高,同时拉伸强度和弯曲强度提高也较大提高,提高整体的使用质量和使用效果,通过设置的阻燃剂和抗氧剂能够使保护管的阻燃性和抗氧化性能较好,提高整体使用的安全性。(The invention relates to the technical field of cable protection pipes, in particular to a modified MPP cable protection pipe which comprises polypropylene, a color ribbon ingredient, high-density polyethylene, fly ash, a lubricating impact modifier, a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer, wherein the modified MPP cable protection pipe comprises the following components in parts by mass: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.)

1. A modified MPP cable protection tube comprises polypropylene, ribbon ingredients, high-density polyethylene, fly ash, a lubricating type impact modifier, a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer, and is characterized in that the modified MPP cable protection tube comprises the following components in parts by mass: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

2. The modified MPP cable protection tube of claim 1, wherein the coupling agent is phenolic silane coupling agent and the compatibilizer is maleic anhydride grafted polyethylene PE-g-MAH.

3. The modified MPP cable protection tube of claim 1, wherein the toughening agent is POE, TPE or EPDM or their mixture, and the flame retardant is tributyl phosphate, tri (2-ethylhexyl) phosphate or tolylene diphenyl phosphate.

4. The modified MPP cable protection tube of claim 1, wherein the antioxidant is selected from pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].

5. The modified MPP cable protection tube of claim 1, wherein the lubricating impact modifier is selected from methyl methacrylate-butadiene-styrene (MBS), Chlorinated Polyethylene (CPE) or their mixture.

6. The modified MPP cable protection tube of claim 1, comprising the following manufacturing process steps:

s1, selecting according to the mass parts: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

S2, naturally drying the fly ash, grinding the fly ash by a KNM type quick grinder for use, adding polypropylene, high-density polyethylene, fly ash and a lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification, and then sequentially adding a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer into the reaction kettle for full stirring to obtain a composite material;

and S3, heating, blending and extruding the composite material and the color ribbon ingredients by a screw extruder, shaping by a die orifice, sizing in vacuum, and cooling and shaping by spraying.

7. The modified MPP cable protection tube of claim 6, wherein the working temperature of the modification treatment in the S2 reaction kettle is 100-150 ℃ and the low speed stirring is carried out for 30-50 min, and the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer are added and the reaction kettle is continuously stirred for 30-40 min.

8. The modified MPP cable protection tube of claim 6, wherein the head temperature of the S2 screw extruder is 250-260 ℃, the barrel temperature is 230-240 ℃, and the screw rotation speed is 300-400 r/min.

Technical Field

The invention relates to the technical field of cable protection pipes, in particular to a modified MPP cable protection pipe.

Background

The common cable protection tube in the market at present has two kinds of MPP pipe and CPVC pipe. The MPP pipe is divided into an excavation type pipe and a non-excavation type pipe, and the MPP non-excavation pipe is also called as an MPP jacking pipe or a dragging pipe. The MPP pipe is a plastic pipe prepared by adopting modified polypropylene as a main raw material, is one of the most conventional electric power pipes mainly applied to the market at present, but has more and more prominent defects along with the gradual expansion of the application field and the environment, and cannot completely adapt to the environment with high requirements in the aspects of comprehensive properties such as strength, flame retardance and the like, so that the modified MPP cable protection pipe is provided.

Disclosure of Invention

The invention aims to provide a modified MPP cable protection tube to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a modified MPP cable protection tube comprises polypropylene, ribbon ingredients, high-density polyethylene, fly ash, a lubricating impact modifier, a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer, and the modified MPP cable protection tube comprises the following components in parts by mass: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

As a preferable scheme of the invention, the coupling agent is a phenolic resin silane coupling agent, and the compatilizer is maleic anhydride grafted polyethylene PE-g-MAH.

As a preferable scheme of the invention, the toughening agent is one or a mixture of POE, TPE and EPDM, and the flame retardant is tributyl phosphate, tri (2-ethylhexyl) phosphate and toluene-diphenyl phosphate.

In a preferred embodiment of the present invention, the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].

As a preferable scheme of the invention, the lubricating impact modifier is one of methyl methacrylate-butadiene-styrene (MBS) and Chlorinated Polyethylene (CPE) or a mixture thereof.

A modified MPP cable protection tube comprises the following manufacturing process steps:

s1, selecting according to the mass parts: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

S2, naturally drying the fly ash, grinding the fly ash by a KNM type quick grinder for use, adding polypropylene, high-density polyethylene, fly ash and a lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification, and then sequentially adding a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer into the reaction kettle for full stirring to obtain a composite material;

and S3, heating, blending and extruding the composite material and the color ribbon ingredients by a screw extruder, shaping by a die orifice, sizing in vacuum, and cooling and shaping by spraying.

As a preferable scheme of the invention, the modification treatment working temperature of the S2 reaction kettle is 100-150 ℃, the low-speed stirring is carried out for 30-50 min, and the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer are added and then the reaction kettle is continuously stirred for 30-40 min.

As a preferable scheme of the invention, the head temperature of the S2 screw extruder is 250-260 ℃, the temperature of the screw cylinder is 230-240 ℃, and the rotating speed of the screw is 300-400 r/min.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the interface performance of a binary system of high-density polyethylene/inorganic fiber is improved by taking maleic anhydride grafted polyethylene PE-g-MAH as a compatilizer, the fly ash has the advantages of light particle weight, high mechanical property, more active groups, excellent electrical property and the like, the integral impact strength can be greatly improved by the high-density polyethylene, the flexibilizer, the coupling agent and the compatilizer, meanwhile, the tensile strength and the bending strength are also greatly improved, the integral use quality and the integral use effect are improved, the flame retardance and the oxidation resistance of the protection tube can be better by the arranged flame retardant and the antioxidant, and the integral use safety is improved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The invention provides a technical scheme that:

a modified MPP cable protection tube comprises polypropylene, ribbon ingredients, high-density polyethylene, fly ash, a lubricating impact modifier, a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer, and the modified MPP cable protection tube comprises the following components in parts by mass: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

The coupling agent is phenolic resin silane coupling agent, and the compatilizer is maleic anhydride grafted polyethylene PE-g-MAH.

The toughening agent is one or a mixture of POE, TPE and EPDM, and the flame retardant is tributyl phosphate, tri (2-ethylhexyl) phosphate and toluene-diphenyl phosphate.

The antioxidant is selected from tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.

The lubricating impact modifier is one or a mixture of methyl methacrylate-butadiene-styrene (MBS) and Chlorinated Polyethylene (CPE).

A modified MPP cable protection tube comprises the following manufacturing process steps:

s1, selecting according to the mass parts: 100-200 parts of polypropylene, 5-15 parts of color band ingredients, 100-130 parts of high-density polyethylene, 30-40 parts of fly ash, 10-20 parts of lubricating type impact modifier, 10-20 parts of toughening agent, 70-120 parts of coupling agent, 10-30 parts of flame retardant, 30-40 parts of antioxidant and 20-40 parts of compatilizer.

S2, naturally drying the fly ash, grinding the fly ash by a KNM type quick grinder for use, adding polypropylene, high-density polyethylene, fly ash and a lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification, and then sequentially adding a toughening agent, a coupling agent, a flame retardant, an antioxidant and a compatilizer into the reaction kettle for full stirring to obtain a composite material;

and S3, heating, blending and extruding the composite material and the color ribbon ingredients by a screw extruder, shaping by a die orifice, sizing in vacuum, and cooling and shaping by spraying.

And (3) stirring the modified treatment in the S2 reaction kettle at a low speed for 30-50 min at the working temperature of 100-150 ℃, adding the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer, and then continuously stirring the reaction kettle for 30-40 min.

S2 the head temperature of the screw extruder is 250-260 ℃, the barrel temperature is 230-240 ℃, and the screw rotation speed is 300-400 r/min.

Example 1: selecting the following components in parts by mass: 100 parts of polypropylene, 5 parts of ribbon ingredients, 100 parts of high-density polyethylene, 30 parts of fly ash, 10 parts of lubricating type impact modifier, 10 parts of toughening agent, 70 parts of coupling agent, 10 parts of flame retardant, 30 parts of antioxidant and 20 parts of compatilizer, naturally air-drying the fly ash, grinding the fly ash by a KNM type quick grinder, adding the polypropylene, the high-density polyethylene, the fly ash and the lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification treatment, stirring the mixture at a low speed of 100-150 ℃ for 30-50 min, then sequentially adding the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer into the reaction kettle, fully stirring the mixture for 30-40 min to obtain a composite material, heating and blending the composite material and the ribbon ingredients by a screw extruder, extruding the head temperature of the screw extruder to 250-260 ℃, the temperature of a screw cylinder to 230-240 ℃, and rotating the screw at a speed of 300-400 r/min, and performing die orifice sizing, vacuum sizing and spray cooling sizing.

Example 2: selecting the following components in parts by mass: 150 parts of polypropylene, 10 parts of ribbon ingredients, 120 parts of high-density polyethylene, 35 parts of fly ash, 15 parts of lubricating type impact modifier, 15 parts of toughening agent, 90 parts of coupling agent, 20 parts of flame retardant, 35 parts of antioxidant and 30 parts of compatilizer, naturally air-drying the fly ash, grinding the fly ash by a KNM type quick grinder, adding the polypropylene, the high-density polyethylene, the fly ash and the lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification treatment, stirring the mixture at a low speed of 100-150 ℃ for 30-50 min, then sequentially adding the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer into the reaction kettle, fully stirring the mixture for 30-40 min to obtain a composite material, heating and blending the composite material and the ribbon ingredients by a screw extruder, extruding the head temperature of the screw extruder to 250-260 ℃, the temperature of a screw cylinder to 230-240 ℃, and rotating the screw at a speed of 300-400 r/min, and performing die orifice sizing, vacuum sizing and spray cooling sizing.

Example 3: selecting the following components in parts by mass: 200 parts of polypropylene, 15 parts of ribbon ingredients, 130 parts of high-density polyethylene, 40 parts of fly ash, 20 parts of lubricating type impact modifier, 20 parts of toughening agent, 120 parts of coupling agent, 30 parts of flame retardant, 40 parts of antioxidant and 40 parts of compatilizer, naturally air-drying the fly ash, grinding the fly ash by a KNM type quick grinder, adding the polypropylene, the high-density polyethylene, the fly ash and the lubricating type impact modifier into a reaction kettle, heating and stirring the mixture for modification treatment, stirring the mixture at a low speed of 100-150 ℃ for 30-50 min, then sequentially adding the toughening agent, the coupling agent, the flame retardant, the antioxidant and the compatilizer into the reaction kettle, fully stirring the mixture for 30-40 min to obtain a composite material, heating and blending the composite material and the ribbon ingredients by a screw extruder, extruding the head temperature of the screw extruder to 250-260 ℃, the temperature of a screw cylinder to 230-240 ℃, and rotating the screw at a speed of 300-400 r/min, and performing die orifice sizing, vacuum sizing and spray cooling sizing.

The mechanical and flame retardancy tests of the 3 examples are given in the following Table

The table above shows that the modified MPP cable protection tube manufactured in example 2 has high mechanical properties and flame retardant properties.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.