CN115232415A - HPVC modified material for protective tube and preparation method of HPVC cable protective tube - Google Patents

HPVC modified material for protective tube and preparation method of HPVC cable protective tube Download PDF

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Publication number
CN115232415A
CN115232415A CN202210900891.0A CN202210900891A CN115232415A CN 115232415 A CN115232415 A CN 115232415A CN 202210900891 A CN202210900891 A CN 202210900891A CN 115232415 A CN115232415 A CN 115232415A
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hpvc
parts
cable protection
modified material
protective tube
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Inventor
吴晓清
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Suzhou Guoyu Carbon Fiber Technology Co ltd
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Suzhou Guoyu Carbon Fiber Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The invention discloses an HPVC modified material for a protective tube and a preparation method of an HPVC cable protective tube, aiming at the problem of poor outdoor performance of the existing PVC, the invention provides the following technical scheme, and the HPVC modified material for the protective tube comprises the following formula components in parts by weight: 50-100 parts of PVC master batch; 0-50 parts of SG-3 type PVC; 0-5 parts of MBS; 0.5-3 parts of light calcium carbonate; 4-8 parts of a stabilizer; 0.01-1 part of a lubricant; 5-8 parts of CPE; 2-15 parts of ACR; 1-3 parts of tri-salt; 0-0.25 part of pigment. The HPVC modified material has excellent mechanical property and good heat resistance, can resist the corrosion of acid, alkali, salt, oxidant and the like, and can be popularized and used for manufacturing cable protection tubes. A preparation method of an HPVC cable protection pipe comprises the following steps: preparing materials; mixing materials; melting and mixing; preliminarily forming the pipe; cooling and shaping; cutting and shaping; and (7) warehousing. The preparation method has simple steps, and the prepared HPVC cable protection pipe has good mechanical property.

Description

HPVC modified material for protective tube and preparation method of HPVC cable protective tube
Technical Field
The invention relates to the field of cable protection pipes, in particular to an HPVC modified material for a protection pipe and a preparation method of an HPVC cable protection pipe.
Background
Polyvinyl chloride (PVC), is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) with initiators such as peroxides and azo compounds or under the action of light and heat according to a radical polymerization mechanism.
In daily life, power cables are widely used and applied to various industries and various occasions, and some cables are placed in harsh environments, such as buried underground, wet underground environment, or exposed outdoors, and subjected to wind, sunshine and the like, so that a protection pipe is necessary to be arranged on the cable. From the aspect of cost, manufacturing the protection pipe with a resin material can reduce the cost of the protection pipe.
PVC, a commonly used resin plastic, is unfortunately not suitable for a material of a cable protection pipe due to the defects of low self mechanical strength, poor heat resistance, poor weather resistance and the like. Therefore, how to modify PVC to meet the material requirements of composite cable protection tubes is a hot problem in the industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the HPVC modified material for the protective tube and the preparation method of the HPVC cable protective tube, and the HPVC modified material has the advantages of high mechanical strength, good weather resistance and acid and alkali corrosion resistance.
In order to achieve the purpose, the invention provides the following technical scheme:
an HPVC modified material for a protective tube comprises the following formula components in parts by weight:
50-100 parts of PVC master batch;
0-50 parts of SG-3 type PVC;
0-5 parts of MBS;
0.5-3 parts of light calcium carbonate;
4-8 parts of a stabilizer;
0.01-1 part of lubricant;
5-8 parts of CPE;
2-15 parts of ACR;
1-3 parts of tri-salt;
0-0.25 part of pigment.
By adopting the technical scheme, the toughness and hardness of the HPVC modified material prepared by the formula can be effectively improved by adding SG-3 type PVC, and the mechanical strength of a formed piece prepared by the material is enhanced, so that a cable protection pipe prepared by the material has better mechanical property, and an internal cable is better protected; by adding ACR, the forming temperature of the HPVC modified material can be effectively reduced, so that the forming difficulty is reduced, and meanwhile, the forming effect can be improved, so that the yield and the quality of the cable protection pipe made of the material are ensured; after CPE is added, the molecular bond irregularity is increased, the polarity is increased, the resin solubility is increased, and the chemical stability is increased, so that the heat resistance, acid resistance, alkali resistance, salt corrosion, oxidant corrosion and the like of the material are improved, and the CPE can be popularized and used for manufacturing cable protection pipes.
Further, the PVC master batch is selected from one or a mixture of SG-5 type PVC, SG-7 type PVC and SG-8 type PVC.
By adopting the technical scheme, the PVC master batch can be adjusted according to different use environments of the cable protection pipe, so that the material has changeability and universality, and the application range of the material is expanded.
Further, the stabilizer is one or a mixture of more of calcium-zinc composite stabilizer, barium-zinc composite stabilizer and potassium-zinc composite stabilizer.
By adopting the technical scheme, the stabilizer has low influence on the environment, is basically nontoxic and harmless, can be used for placing the HPVC cable protection pipe made of the material, cannot pollute soil and water after being buried, and prevents ecological damage to the surrounding environment caused by burying the cable protection pipe.
Further, the lubricant is selected from one or more of paraffin, stearic acid and modified paraffin.
By adopting the technical scheme, the formed part prepared from the material has better effect in demoulding, and the surface smoothness of the formed part is improved, so that the appearance of the product is better.
Further, ACR is selected from one or more of ACR-181 and ACR-880.
A preparation method of an HPVC cable protection pipe comprises the following steps:
step one, preparing materials: weighing the raw materials according to the formula ratio;
step two, mixing materials: putting the raw materials into a high-speed stirrer to be mixed to obtain a mixed material;
step three, melting and mixing: putting the mixed material obtained in the second step into a double-screw extruder for mixing to obtain a molten material;
fourthly, preliminarily forming the pipe: installing an extrusion die at an extrusion port of the double-screw extruder, and enabling the molten material obtained in the third step to pass through the extrusion die to obtain a pipe blank;
step five, cooling and shaping: cooling and shaping the pipe blank obtained in the fourth step through a water tank;
sixthly, cutting and shaping: cutting the pipe blank cooled in the fifth step according to requirements to obtain a finished product of the HPVC cable protection pipe;
and seventhly, warehousing.
Further, the second step is that the raw materials are firstly put into a thermal stirring pot for thermal stirring and then are conveyed into a cooling pot for cooling.
Further, the thermal stirring temperature of the thermal stirring kettle is 110 ℃, and the temperature to which the cooling kettle needs to be cooled is 60 ℃.
Further, the cooling pan adopts a water cooling mode.
Further, the mixed material obtained in the second step needs to be conveyed to a centralized feeding platform for curing, and then the third step of melting and mixing is carried out.
By adopting the technical scheme, the preparation method has fewer steps, and the first step and the second step are raw material pretreatment processes, so that subsequent process steps can be conveniently and orderly carried out; in the second step, a two-step mixing mode of cold mixing and hot mixing is adopted, so that water vapor in the raw materials can be effectively removed, the water content of the prepared HPVC modified material is reduced, and the bubble amount in the formed part can be kept at a low value approaching zero; curing the mixed material obtained in the second step, so that the components can be conveniently fused in the mixing process at the later stage; the preparation method has simple process and fewer steps, and the prepared protection tube has excellent performance.
In conclusion, the invention has the following beneficial effects:
1. the HPVC material provided by the invention has the advantages of good mechanical property, good corrosion resistance, good heat resistance and convenience for molding, and is suitable for being used as a molding material of a cable protection pipe;
2. the preparation method of the HPVC cable protection pipe provided by the invention has the advantages of fewer steps, simple process and high economic benefit.
Detailed Description
The present invention will be described in detail with reference to examples.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1
The HPVC modified material for the protective tube comprises the following formula components in parts by weight:
100 parts of PVC master batch;
MBS 2 parts;
1 part of light calcium carbonate;
6.2 parts of a stabilizer;
0.1 part of paraffin;
0.1 part of modified paraffin;
0.1 part of stearic acid;
6 parts of CPE;
ACR-181 7 parts;
ACR-880 parts;
2 parts of trisalt;
0.2 portion of scarlet.
Example 2
The HPVC modified material for the protective tube comprises the following formula components in parts by weight:
100 parts of PVC master batch;
50 parts of SG-3 type PVC;
MBS 2 parts;
1 part of light calcium carbonate;
6.2 parts of a stabilizer;
0.1 part of paraffin;
0.1 part of modified paraffin;
0.1 part of stearic acid;
6 parts of CPE;
ACR-181 7 parts;
ACR-880 parts;
2 parts of trisalt;
0.2 part of scarlet.
Example 3
The HPVC modified material for the protective tube comprises the following formula components in parts by weight:
100 parts of PVC master batch;
50 parts of SG-3 type PVC;
MBS 2 parts;
1 part of light calcium carbonate;
6.2 parts of a stabilizer;
0.1 part of paraffin;
0.1 part of modified paraffin;
0.1 part of stearic acid;
6 parts of CPE;
2 parts of trisalt;
0.2 portion of scarlet.
Example 4
An HPVC modified material for a protective tube comprises the following formula components in parts by weight:
100 parts of PVC master batch;
50 parts of SG-3 type PVC;
MBS 2 parts;
1 part of light calcium carbonate;
6.2 parts of a stabilizer;
0.1 part of paraffin;
0.1 part of modified paraffin;
0.1 part of stearic acid;
ACR-181 7 parts;
ACR-880 parts;
2 parts of trisalt;
0.2 part of scarlet.
Example 5
An HPVC modified material for a protective tube comprises the following formula components in parts by weight:
100 parts of PVC master batch;
50 parts of SG-3 type PVC;
MBS 2 parts;
1 part of light calcium carbonate;
6.2 parts of a stabilizer;
0.1 part of paraffin;
0.1 part of modified paraffin;
0.1 part of stearic acid;
3 parts of CPE;
ACR-181 10 parts;
2 parts of trisalt;
0.2 part of scarlet.
Example 6
The HPVC cable protection tube prepared according to the formulation components of the HPVC modified material for a protection tube of examples 1 to 5 according to the following method comprises the following specific steps:
step one, preparing materials: weighing the raw materials according to the formula ratio by an industrial electronic scale, and placing the raw materials according to the types for later use.
Step two, mixing materials: putting the raw materials into a hot stirring pot of a high-speed stirrer, starting a heating module of the hot stirring pot for preheating, starting stirring when the temperature of the hot stirring pot is raised to 60 ℃, continuously raising the temperature in the stirring process, and keeping the temperature for continuously stirring for 1 hour when the temperature is raised to 110 ℃. And after stirring, conveying the materials to a cooling pot of a high-speed stirrer for cooling and stirring, wherein the cooling stirring pot adopts a water cooling mode to cool the materials to 60 ℃ to obtain mixed materials, outputting the mixed materials from the cooling pot, conveying the mixed materials to a centralized feeding platform for curing, and the curing time is 1.5h.
Step three, melting and mixing: putting the mixed material obtained in the second step into a double-screw extruder from a centralized feeding platform for mixing, wherein the temperature of screws is 150 ℃, and obtaining a molten material;
fourthly, preliminarily forming the pipe: installing an extrusion die at an extrusion port of the double-screw extruder, and enabling the molten material obtained in the third step to pass through the extrusion die to obtain a pipe blank;
step five, cooling and shaping: cooling and shaping the pipe blank obtained in the fourth step through a water tank;
sixthly, cutting and shaping: cutting the pipe blank cooled in the fifth step according to requirements to obtain a finished product of the HPVC cable protection pipe;
and seventhly, warehousing.
Examples of the experiments
Cable protection pipes were prepared according to the preparation method of example 6 using the formulations of examples 1 to 5, and the prepared cable protection pipes were subjected to performance tests, the test results of which are shown in the following table.
Table 1 summary of performance test data for cable protection tubes prepared according to the formulations of examples 1 to 5
Figure BDA0003770901290000071
Figure BDA0003770901290000081
From the data in table 1:
1. the three groups of data of tensile strength, elongation at break and bending strength can be analyzed, and compared with the comparative examples 1 and 2, the mechanical strength of the HPVC modified material is effectively improved after SG-3 type PVC is added. From the comparison of examples 2 and 3, it can be seen that the addition of ACR-181 and ACR-880 also positively influences the mechanical strength of the material. On the other hand, it can be seen from the comparison among examples 2, 4 and 5 that the addition of both ACR-181 and ACR-880 provides the best mechanical property improving effect.
2. From the vicat softening temperature data, it can be analyzed and obtained that the softening temperatures of examples 1-5 are compared, and it can be found that the vicat softening temperature of the HPVC modified material is obviously increased and has very excellent heat resistance after adding CPE, while the vicat softening temperature of the HPVC modified material is decreased after reducing CPE in examples 4 and 5, and further proves the effect of CPE on enhancing the heat resistance of the HPVC modified material.
3. The ring stiffness data can be analyzed and obtained, after ACR-181 and ACR-880 are added, when the molten HPVC modified material is cooled, the arrangement of intermolecular hydrogen bonds is regular and ordered, and the ring stiffness of the material is effectively improved.
4. The connection sealing performance result and the wall thickness deviation of the same section can be analyzed, after ACR-181 and ACR-880 are added, the temperature required by the HPVC material during molding is reduced, after CPE is added, the polarity of the material is increased, the melting fluidity of the material is improved, the molding of the material is better, the connection sealing performance of the pipe is enhanced, meanwhile, the molding degree of the HPVC material is better, and the yield is favorably ensured.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. An HPVC modified material for a protective tube is characterized in that,
the formula comprises the following components in parts by weight:
50-100 parts of PVC master batch;
0-50 parts of SG-3 type PVC;
0-5 parts of MBS;
0.5-3 parts of light calcium carbonate;
4-8 parts of a stabilizer;
0.01-1 part of lubricant;
5-8 parts of CPE;
2-15 parts of ACR;
1-3 parts of a tri-salt;
0-0.25 part of pigment.
2. The HPVC modified material for the protection pipe as recited in claim 1, wherein: the PVC master batch is selected from one or a mixture of SG-5 type PVC, SG-7 type PVC and SG-8 type PVC.
3. The HPVC modified material for the protection pipe as recited in claim 1, wherein: the stabilizer is one or more of calcium-zinc composite stabilizer, barium-zinc composite stabilizer and potassium-zinc composite stabilizer.
4. The HPVC modified material for a protective tube as claimed in claim 1, wherein: the lubricant is selected from one or more of paraffin, stearic acid and modified paraffin.
5. The HPVC modified material for a protective tube as claimed in claim 1, wherein: the ACR is one or more of ACR-181 and ACR-880.
6. A method for preparing an HPVC cable protection tube, which is applied to the production of the HPVC modified material for the protection tube in any one of claims 1 to 5, and is characterized by comprising the following steps of:
step one, preparing materials: weighing the raw materials according to the formula ratio;
step two, mixing materials: putting the raw materials into a high-speed stirrer to be mixed to obtain a mixed material;
step three, melting and mixing: putting the mixed material obtained in the second step into a double-screw extruder for mixing to obtain a molten material;
fourthly, preliminarily forming the pipe: installing an extrusion die at an extrusion port of a double-screw extruder, and enabling the molten material obtained in the third step to pass through the extrusion die to obtain a pipe blank;
step five, cooling and shaping: cooling and shaping the pipe blank obtained in the fourth step through a water tank;
sixthly, cutting and shaping: cutting the pipe blank cooled in the fifth step according to requirements to obtain a finished product of the HPVC cable protection pipe;
and seventhly, warehousing.
7. The method for preparing an HPVC cable protection tube as recited in claim 6, wherein: the second step comprises the specific steps of putting the raw materials into a hot stirring pot for hot stirring, and then conveying the raw materials into a cooling pot for cooling.
8. The method for preparing an HPVC cable protection tube according to claim 7, wherein: the hot stirring temperature of the hot stirring pot is 110 ℃, and the temperature to which the cooling pot needs to be cooled is 60 ℃.
9. The method for preparing an HPVC cable protection tube as recited in claim 7, wherein: the cooling pan adopts a water cooling mode.
10. The method for preparing an HPVC cable protection tube as recited in claim 6, wherein: and conveying the mixed material obtained in the second step to a centralized feeding platform for curing, and then carrying out the third step of melting and mixing.
CN202210900891.0A 2022-07-28 2022-07-28 HPVC modified material for protective tube and preparation method of HPVC cable protective tube Pending CN115232415A (en)

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Title
康远琪;: "氯化聚氯乙烯/聚氯乙烯/抗冲击改性剂共混对埋地式高压电力电缆套管的维卡软化温度及力学性能的影响", 云南化工, vol. 37, no. 04, pages 28 - 31 *

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Application publication date: 20221025