CN111763371A - Anti-tensile polypropylene power tube and preparation method thereof - Google Patents
Anti-tensile polypropylene power tube and preparation method thereof Download PDFInfo
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- CN111763371A CN111763371A CN202010495380.6A CN202010495380A CN111763371A CN 111763371 A CN111763371 A CN 111763371A CN 202010495380 A CN202010495380 A CN 202010495380A CN 111763371 A CN111763371 A CN 111763371A
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- -1 polypropylene Polymers 0.000 title claims abstract description 89
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 85
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229920000742 Cotton Polymers 0.000 claims abstract description 26
- 239000012745 toughening agent Substances 0.000 claims abstract description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 16
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims abstract description 16
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims abstract description 16
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims abstract description 16
- 229960002675 xylitol Drugs 0.000 claims abstract description 16
- 235000010447 xylitol Nutrition 0.000 claims abstract description 16
- 239000000811 xylitol Substances 0.000 claims abstract description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 15
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 239000011259 mixed solution Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 12
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012803 melt mixture Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229920001897 terpolymer Polymers 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 239000004113 Sepiolite Substances 0.000 description 2
- DLNAGPYXDXKSDK-UHFFFAOYSA-K cerium(3+);2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [Ce+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O DLNAGPYXDXKSDK-UHFFFAOYSA-K 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- LRGQZEKJTHEMOJ-UHFFFAOYSA-N propane-1,2,3-triol;zinc Chemical compound [Zn].OCC(O)CO LRGQZEKJTHEMOJ-UHFFFAOYSA-N 0.000 description 2
- 229910052624 sepiolite Inorganic materials 0.000 description 2
- 235000019355 sepiolite Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08L2205/03—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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the technical field of communication pipelines and discloses an anti-tensile polypropylene power tube and a preparation method thereof, wherein the polypropylene power tube comprises the following raw materials in parts by weight: 90-110 parts of polypropylene, 10-12 parts of cotton fiber, 1-2 parts of titanium tetrachloride, 10-20 parts of light calcium carbonate, 8-10 parts of toughening agent, 5-10 parts of nitrile rubber, 5-10 parts of xylitol and 3-7 parts of acrylate; during preparation, polypropylene is taken to be ultrasonically dispersed in ether, titanium tetrachloride and cotton fiber are added, the ultrasonic dispersion is continued to obtain a polypropylene mixture, then a cathode electrode plate and an anode electrode plate are inserted, alternating current is conducted on the anode electrode plate and the cathode electrode plate to obtain a modified mixed solution, the modified mixed solution is heated to 110 ℃ and 130 ℃, then a toughening agent, nitrile rubber, xylitol and acrylic ester are added, and the mixture is stirred, melted and mixed to obtain a molten mixture; and (3) putting the molten mixture into an extruder for extrusion, carrying out vacuum shaping, cooling, drawing and cutting. The invention has better tensile property.
Description
Technical Field
The invention relates to the technical field of communication pipelines, in particular to a stretch-resistant polypropylene electric power pipe and a preparation method thereof.
Background
The polypropylene power tube is made of polypropylene as main raw material, and is used for laying pipeline, cable and other construction projects in special sections of roads, railways, buildings, riverbeds and the like without digging, digging and damaging the road surface in large quantity. Compared with the traditional 'trenching and pipe burying method', the trenchless power pipe engineering is more suitable for the current environmental protection requirement, and the disturbing factors such as dust flying, traffic jam and the like caused by the traditional construction are eliminated, so that the technology can also lay pipelines in some areas which can not implement the trenching operation, such as historic site protection areas, downtown areas, crop and farmland protection areas, expressways, rivers and the like.
The 201910622926.7 patent of application number discloses a high-strength corrosion-resistant MPP corrugated power pipe, which is prepared from modified polypropylene, light calcium carbonate, a toughening agent, nitrile rubber, xylitol, cerium citrate, zinc glycerolate, stearic acid, acrylic ester and sepiolite; the nitrile rubber, the light calcium carbonate, the acrylate and the sepiolite have synergistic effect, so that the tensile strength and the impact toughness of the product can be improved, good physical and mechanical properties are kept, and the performances such as corrosion resistance and the like are improved; the toughening agent can improve the impact strength, improve the corrosion resistance and the processing fluidity of the product and improve the tensile strength and the impact toughness of the MPP corrugated power pipe; xylitol, cerium citrate and zinc glycerolate are added to make the alloy have good heat resistance and temperature resistance and deformation resistance.
Although the polypropylene power tube prepared by the technical scheme has good heat-temperature resistance and deformation resistance, the polypropylene power tube has poor tensile resistance, the polypropylene power tube needs to be pulled frequently in trenchless construction, and if the tensile resistance of the power tube is poor, a polypropylene molecular bond is easy to break in the process of pulling the power tube, so that the polypropylene power tube is easy to break, and the construction quality and the construction progress are seriously influenced.
Disclosure of Invention
In view of the above, the present invention provides a stretch-resistant polypropylene electrical tube and a preparation method thereof, which can overcome the defects in the background art and have better stretch-resistant performance.
The invention solves the technical problems by the following technical means:
the stretch-proofing polypropylene power tube is characterized by comprising the following raw materials in parts by weight: polypropylene, cotton fiber, titanium tetrachloride, light calcium carbonate, a toughening agent, nitrile rubber, xylitol and acrylate.
In the invention, polypropylene is used as a main material of the power tube; the three substances of light calcium carbonate, nitrile rubber and acrylate act synergistically, so that the tensile strength and impact toughness of the polypropylene current tube can be improved to a certain extent, good physical and mechanical properties are kept, and the performances such as corrosion resistance and the like are improved; the addition of the toughening agent enables the polypropylene power pipe to have higher impact resistance, the impact strength can be properly improved, the corrosion resistance and the processing fluidity of a product can be improved, and the tensile strength and the impact toughness of the polypropylene power pipe are improved; the addition of xylitol can improve the plasticizing speed of the whole power tube in the preparation process and improve the processing performance of the polypropylene power tube, thereby improving the thermal stability and the mechanical property of the polypropylene power tube. The cotton fibers and the titanium tetrachloride are added, so that the cotton fibers with long molecular chains are mutually wound in the process of preparing the power tube, a net structure can be formed, a large number of polypropylene molecules can be connected and gathered, the acting force between the molecules is firmer, and the produced polypropylene power tube has stronger tensile resistance.
Further, the polypropylene power tube comprises the following raw materials in parts by weight: 90-110 parts of polypropylene, 10-12 parts of cotton fiber, 1-2 parts of titanium tetrachloride, 10-20 parts of light calcium carbonate, 8-10 parts of toughening agent, 5-10 parts of nitrile rubber, 5-10 parts of xylitol and 3-7 parts of acrylate.
Further, the polypropylene power tube comprises the following raw materials in parts by weight: 100 parts of polypropylene, 11 parts of cotton fiber, 1.5 parts of titanium tetrachloride, 15 parts of light calcium carbonate, 9 parts of toughening agent, 12.5 parts of nitrile rubber, 7.5 parts of xylitol and 5 parts of acrylate.
Further, the toughening agent is one or a combination of more of methyl methacrylate, butadiene and styrene terpolymer.
The invention also discloses a preparation method of the stretch-resistant polypropylene electric power tube, which comprises the following steps,
s1, taking polypropylene, ultrasonically dispersing in ether, adding titanium tetrachloride and cotton fibers, and continuing to ultrasonically disperse to obtain a polypropylene mixture;
s2, inserting a cathode electrode plate and an anode electrode plate into the polypropylene mixture of S1, and switching on alternating current to the anode electrode plate and the cathode electrode plate to obtain modified mixed liquid;
s3, gradually heating the modified mixed solution to 110-130 ℃, then adding the toughening agent, the nitrile rubber, the xylitol and the acrylic ester, stirring, and carrying out melt mixing to obtain a melt mixture;
s4, placing the molten mixture in an extruder for extrusion to obtain an extrusion material, wherein the temperature of a machine head is controlled at 180-200 ℃, the traction speed is 0.8-1.0m/min, and the rotating speed of a host machine is 20-24 r/min;
and S5, carrying out vacuum shaping on the extruded material obtained in the step A2, cooling, drawing and cutting to obtain the polypropylene power tube.
In the reaction, Ti4+As charged intermediates, cotton fibers also have a large amount ofhydroxyl-OH, it is continuous in polypropylene and cotton fibrous hydroxyl surface replacement, with cotton fiber grafting to the polypropylene molecular chain, cotton fiber has the molecular chain length, and the cotton fiber of long molecular chain twines each other in preparation power tube process, can form network structure, so can be with handing-over and the gathering of a large amount of polypropylene molecules for the effort of intermolecular is more firm, thereby makes the tensile resistance of the polypropylene power tube of producing stronger.
Further, the voltage of the anode electrode plate and the cathode electrode plate is 12-18V, the current is 0.5-1A, and the time is 20-30 min.
Further, the frequency of alternating current which is conducted between the anode electrode plate and the cathode electrode plate is 3-5 Hz.
Further, the ultrasonic frequency of the ultrasonic dispersion is 10000-20000 Hz.
The invention has the beneficial effects that:
the invention adds cotton fiber and titanium tetrachloride material into polypropylene power tube, when preparing the polypropylene power tube, Ti4+As a charged intermediate, a large amount of hydroxyl-OH is also arranged on the cotton fiber, the hydroxyl-OH is continuously replaced on the surfaces of the polypropylene and the cotton fiber, the cotton fiber is grafted to a polypropylene molecular chain, the cotton fiber has a molecular chain length, the cotton fiber with the long molecular chain is mutually wound in the process of preparing the power pipe, a net structure can be formed, so that a large amount of polypropylene molecules can be jointed and gathered, the acting force between the molecules is firmer, the tensile resistance of the produced polypropylene power pipe is stronger, and the impact resistance of the polypropylene power cable pipe in a low-temperature environment can be met.
Detailed Description
The invention will now be described in detail with reference to examples 1 to 4 and comparative examples:
examples 1,
The preparation method of the stretch-resistant polypropylene power tube of the embodiment comprises the following steps,
s1, performing ultrasonic dispersion on 100kg of polypropylene with the particle size of 15 nanometers in 200kg of diethyl ether, adding 1.5kg of titanium tetrachloride and 11kg of cotton fibers, and continuing performing ultrasonic dispersion to obtain a polypropylene mixture, wherein the ultrasonic frequency of the ultrasonic dispersion is 15000 Hz;
s2, inserting a cathode electrode plate and an anode electrode plate into the polypropylene mixture of S1, and switching on alternating current to the anode electrode plate and the cathode electrode plate to obtain a modified mixed solution, wherein the voltage of the anode electrode plate and the cathode electrode plate is 15V, the current is 0.75A, the frequency is 4Hz, and the time is 25 min;
s3, gradually heating the modified mixed solution to 120 ℃, then adding 9kg of toughening agent, 7.5kg of nitrile rubber, 7.5kg of xylitol and 5kg of acrylate, stirring, and carrying out melt mixing to obtain a melt mixture, wherein the toughening agent is one or more of terpolymer of methyl methacrylate, butadiene and styrene, and the embodiment is methyl methacrylate;
s4, placing the molten mixture in an extruder to extrude to obtain an extruded material, wherein the temperature of a machine head is controlled at 190 ℃, the traction speed is 0.9m/min, and the rotating speed of a main machine is 22 r/min;
and S5, carrying out vacuum shaping on the extruded material obtained in the step A2, cooling, drawing and cutting to obtain the polypropylene power tube.
Examples 2,
The preparation method of the stretch-resistant polypropylene power tube of the embodiment comprises the following steps,
s1, performing ultrasonic dispersion on 90kg of polypropylene with the particle size of 10 nanometers in 200kg of diethyl ether, adding 1kg of titanium tetrachloride and 10kg of cotton fibers, and continuing performing ultrasonic dispersion to obtain a polypropylene mixture, wherein the ultrasonic frequency of the ultrasonic dispersion is 10000 Hz;
s2, inserting a cathode electrode plate and an anode electrode plate into the polypropylene mixture of S1, and switching on alternating current to the anode electrode plate and the cathode electrode plate to obtain a modified mixed solution, wherein the voltage of the anode electrode plate and the cathode electrode plate is 12V, the current is 0.5A, the frequency is 3Hz, and the time is 20 min;
s3, gradually heating the modified mixed solution to 110 ℃, then adding 8kg of toughening agent, 5kg of nitrile rubber, 5kg of xylitol and 3kg of acrylate, stirring, and carrying out melt mixing to obtain a melt mixture, wherein the toughening agent is one or more of terpolymer of methyl methacrylate, butadiene and styrene, and the toughening agent is methyl methacrylate in the embodiment;
s4, placing the molten mixture in an extruder to extrude to obtain an extruded material, wherein the temperature of a machine head is controlled at 180 ℃, the traction speed is 0.8m/min, and the rotating speed of a main machine is 20 r/min;
and S5, carrying out vacuum shaping on the extruded material obtained in the step A2, cooling, drawing and cutting to obtain the polypropylene power tube.
Examples 3,
The preparation method of the stretch-resistant polypropylene power tube of the embodiment comprises the following steps,
s1, performing ultrasonic dispersion on 110kg of polypropylene with the particle size of 20 nanometers in 200kg of diethyl ether, adding 2kg of titanium tetrachloride and 12kg of cotton fibers, and continuing performing ultrasonic dispersion to obtain a polypropylene mixture, wherein the ultrasonic frequency of the ultrasonic dispersion is 20000 Hz;
s2, inserting a cathode electrode plate and an anode electrode plate into the polypropylene mixture of S1, and switching on alternating current to the anode electrode plate and the cathode electrode plate to obtain a modified mixed solution, wherein the voltage of the anode electrode plate and the cathode electrode plate is 18V, the current is 1A, the frequency is 5Hz, and the time is 30 min;
s3, gradually heating the modified mixed solution to 130 ℃, then adding 10kg of toughening agent, 10kg of nitrile rubber, 10kg of xylitol and 7kg of acrylate, stirring, and carrying out melt mixing to obtain a melt mixture, wherein the toughening agent is one or more of terpolymer of methyl methacrylate, butadiene and styrene, and the toughening agent is methyl methacrylate in the embodiment;
s4, placing the molten mixture in an extruder to extrude to obtain an extruded material, wherein the temperature of a machine head is controlled at 200 ℃, the traction speed is 1.0m/min, and the rotating speed of a main machine is 24 r/min;
and S5, carrying out vacuum shaping on the extruded material obtained in the step A2, cooling, drawing and cutting to obtain the polypropylene power tube.
Examples 4,
Example 4 is compared with example 1, and the difference is only that in step S2, steep pulse current is input to the anode plate and the cathode plate, the peak value of the steep pulse is set at 120-150V, the pulse width is set at 0.4-0.6ms, the repetition frequency is set at 220-300kHz, and the pulse gradient is set at 50-100 ns.
Comparative examples,
A comparative example is a polypropylene power tube made using the patent application No. 201910622926.7.
After the polypropylene communication pipes of examples 1 to 3 and comparative examples were prepared, tensile strength indexes at 25 ℃, 0 ℃, 10 ℃ and 25 ℃ were measured for the communication pipes of each example, and the test methods were determined according to national standard GB/T1040-92. The detection instrument used therein was: a universal electronic experiment machine (WDW-1002 type), and the stretching speed is controlled at 10 mm/min.
The final assay data is shown in the following table:
| test temperature | Mechanical properties | Example 1 | Example 2 | Example 3 | Example 4 | Comparative examples |
| 25℃ | Tensile Strength (MPa) | 62.4 | 61.2 | 61.6 | 62.3 | 55.6 |
| 0℃ | Tensile Strength (MPa) | 58.4 | 56.5 | 57.6 | 58.6 | 52.1 |
| -10℃ | Tensile Strength (MPa) | 56.3 | 54.3 | 54.4 | 56.2 | 45.6 |
| -25℃ | Tensile Strength (MPa) | 53.2 | 51.3 | 51.9 | 54.2 | 42.3 |
From the above test results, it can be seen that:
1. from the comparison of example 1 with examples 2 and 3, it can be seen that the polypropylene communication tube produced by using the polypropylene communication tube formulation of example 1 has the best tensile strength.
2. From the comparison of examples 1-3 with the comparative examples, it can be seen that the polypropylene communication tube of the present invention has better tensile strength than the comparative examples.
3. From the comparison of example 1 with example 4, it can be seen that the present invention can also excite Ti with steep pulse current4+The modification and the transfer ensure that the acting force between molecules is firmer, so that the produced polypropylene electric power tube has stronger tensile resistance.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (8)
1. The stretch-proofing polypropylene power tube is characterized by comprising the following raw materials in parts by weight: polypropylene, cotton fiber, titanium tetrachloride, light calcium carbonate, a toughening agent, nitrile rubber, xylitol and acrylate.
2. The stretch resistant polypropylene power tube of claim 1, wherein: the polypropylene power tube comprises the following raw materials in parts by weight: 90-110 parts of polypropylene, 10-12 parts of cotton fiber, 1-2 parts of titanium tetrachloride, 10-20 parts of light calcium carbonate, 8-10 parts of toughening agent, 5-10 parts of nitrile rubber, 5-10 parts of xylitol and 3-7 parts of acrylate.
3. The stretch resistant polypropylene power tube of claim 2, wherein: the polypropylene power tube comprises the following raw materials in parts by weight: 100 parts of polypropylene, 11 parts of cotton fiber, 1.5 parts of titanium tetrachloride, 15 parts of light calcium carbonate, 9 parts of toughening agent, 12.5 parts of nitrile rubber, 7.5 parts of xylitol and 5 parts of acrylate.
4. The stretch resistant polypropylene power tube of claim 3, wherein: the toughening agent is one or a combination of more of methyl methacrylate, butadiene and styrene terpolymer.
5. A process for preparing a stretch resistant polypropylene power tube as claimed in any one of claims 1 to 4 wherein: comprises the following steps of (a) carrying out,
s1, taking polypropylene, ultrasonically dispersing in ether, adding titanium tetrachloride and cotton fibers, and continuing to ultrasonically disperse to obtain a polypropylene mixture;
s2, inserting a cathode electrode plate and an anode electrode plate into the polypropylene mixture of S1, and switching on alternating current to the anode electrode plate and the cathode electrode plate to obtain modified mixed liquid;
s3, gradually heating the modified mixed solution to 110-130 ℃, then adding the toughening agent, the nitrile rubber, the xylitol and the acrylic ester, stirring, and carrying out melt mixing to obtain a melt mixture;
s4, placing the molten mixture in an extruder for extrusion to obtain an extrusion material, wherein the temperature of a machine head is controlled at 180-200 ℃, the traction speed is 0.8-1.0m/min, and the rotating speed of a host machine is 20-24 r/min;
and S5, carrying out vacuum shaping on the extruded material obtained in the step A2, cooling, drawing and cutting to obtain the polypropylene power tube.
6. The stretch-resistant polypropylene power tube and the preparation method thereof according to claim 5, wherein: the voltage for electrifying the anode electrode plate and the cathode electrode plate is 12-18V, the current is 0.5-1A, and the time is 20-30 min.
7. The method of claim 6, wherein the polypropylene tensile strength tube is prepared by the following steps: the frequency of the alternating current which is conducted between the anode electrode plate and the cathode electrode plate is 3-5 Hz.
8. The method of claim 7, wherein the polypropylene tensile strength tube is prepared by the following steps: the ultrasonic frequency of the ultrasonic dispersion is 10000-.
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| CN202010495380.6A CN111763371A (en) | 2020-06-03 | 2020-06-03 | Anti-tensile polypropylene power tube and preparation method thereof |
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| CN202010495380.6A CN111763371A (en) | 2020-06-03 | 2020-06-03 | Anti-tensile polypropylene power tube and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220209A (en) * | 2007-12-14 | 2008-07-16 | 广州华工百川科技股份有限公司 | Production method for composite material of cotton lever and plastics |
| CN101418099A (en) * | 2008-12-02 | 2009-04-29 | 上海金发科技发展有限公司 | Natural fiber reinforcement halogen-free flame retardant polypropylene composite material and preparation method thereof |
| CN104650452A (en) * | 2014-08-07 | 2015-05-27 | 柳州蓓蒂芬科技有限公司 | Preparation method of plant microfine fibers/rubber powder/polypropylene thermal stretch composite material |
| CN110423412A (en) * | 2019-07-11 | 2019-11-08 | 东莞市庆隆塑胶有限公司 | A kind of high-intensitive, corrosion resistant MPP ripple power pipe and preparation method thereof |
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2020
- 2020-06-03 CN CN202010495380.6A patent/CN111763371A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220209A (en) * | 2007-12-14 | 2008-07-16 | 广州华工百川科技股份有限公司 | Production method for composite material of cotton lever and plastics |
| CN101418099A (en) * | 2008-12-02 | 2009-04-29 | 上海金发科技发展有限公司 | Natural fiber reinforcement halogen-free flame retardant polypropylene composite material and preparation method thereof |
| CN104650452A (en) * | 2014-08-07 | 2015-05-27 | 柳州蓓蒂芬科技有限公司 | Preparation method of plant microfine fibers/rubber powder/polypropylene thermal stretch composite material |
| CN110423412A (en) * | 2019-07-11 | 2019-11-08 | 东莞市庆隆塑胶有限公司 | A kind of high-intensitive, corrosion resistant MPP ripple power pipe and preparation method thereof |
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