CN117624690A - Corrosion-resistant PE cable duct and production process thereof - Google Patents
Corrosion-resistant PE cable duct and production process thereof Download PDFInfo
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- CN117624690A CN117624690A CN202311743572.4A CN202311743572A CN117624690A CN 117624690 A CN117624690 A CN 117624690A CN 202311743572 A CN202311743572 A CN 202311743572A CN 117624690 A CN117624690 A CN 117624690A
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- modified
- polyethylene
- antibacterial powder
- silicone oil
- cable
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- 238000005260 corrosion Methods 0.000 title claims abstract description 42
- 230000007797 corrosion Effects 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 166
- -1 polyethylene Polymers 0.000 claims abstract description 80
- 229920000573 polyethylene Polymers 0.000 claims abstract description 80
- 239000011253 protective coating Substances 0.000 claims abstract description 68
- 229920002545 silicone oil Polymers 0.000 claims abstract description 55
- WAVDSLLYAQBITE-UHFFFAOYSA-N (4-ethenylphenyl)methanamine Chemical compound NCC1=CC=C(C=C)C=C1 WAVDSLLYAQBITE-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000002519 antifouling agent Substances 0.000 claims abstract description 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 73
- 239000000843 powder Substances 0.000 claims description 70
- 238000002360 preparation method Methods 0.000 claims description 55
- 229920001903 high density polyethylene Polymers 0.000 claims description 28
- 239000004700 high-density polyethylene Substances 0.000 claims description 28
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 25
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- 239000001257 hydrogen Substances 0.000 claims description 21
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 17
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 16
- 239000007822 coupling agent Substances 0.000 claims description 16
- 229920000570 polyether Polymers 0.000 claims description 16
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000155 melt Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 238000004132 cross linking Methods 0.000 claims description 11
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- BVWUEIUNONATML-UHFFFAOYSA-N n-benzylethenamine Chemical compound C=CNCC1=CC=CC=C1 BVWUEIUNONATML-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 244000063299 Bacillus subtilis Species 0.000 description 4
- 235000014469 Bacillus subtilis Nutrition 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 4
- 241000589516 Pseudomonas Species 0.000 description 4
- 241000191967 Staphylococcus aureus Species 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- XNCOSPRUTUOJCJ-UHFFFAOYSA-N Biguanide Chemical compound NC(N)=NC(N)=N XNCOSPRUTUOJCJ-UHFFFAOYSA-N 0.000 description 1
- 229940123208 Biguanide Drugs 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241000589180 Rhizobium Species 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an anti-corrosion PE cable guide pipe and a production process thereof, and relates to the field of pipes. Wherein, anticorrosive PE cable duct includes PE cable duct body and locates PE cable duct body periphery side's protective coating: the PE cable conduit body is prepared from modified polyethylene, the modified polyethylene comprises polyethylene, p-vinylbenzylamine, vinyl-terminated hydroxyl-terminated silicone oil and filler, and the weight ratio of the polyethylene to the p-vinylbenzylamine to the vinyl-terminated hydroxyl-terminated silicone oil to the filler is 65: (8-13): (12-17): (5.6-7.2); the protective coating is prepared from corrosion-resistant protective paint. In the anti-corrosion PE cable conduit, the adhesion fastness of the protective coating and the PE cable conduit body is high, the protective effect of the protective coating on the PE cable conduit body is improved, and the service life of the PE cable conduit is prolonged.
Description
Technical Field
The invention relates to the field of paint, in particular to an anti-corrosion PE cable conduit and a production process thereof.
Background
The cable duct has the function of protecting the cable from the influence of external environment, and ensuring the stability and safety of cable transmission.
Among them, common cable ducts are plastic ducts such as PVC (polyvinyl chloride) cable ducts, PE (polyethylene) cable ducts, and the like. PVC cable conduits contain harmful elemental halogen and are being resisted by many countries and regions. The PE cable duct is relatively more environment-friendly, has good insulating property, can effectively isolate the contact between the cable and the external environment, reduces the electrical loss in a cable line, and is one of ideal cable ducts.
However, the current PE cable conduit is usually buried underground when in use, so the PE cable conduit has higher requirement on corrosion resistance.
Currently, in order to improve the corrosion resistance of a PE cable conduit, a corrosion-resistant protective coating is generally added to the outer layer of the PE cable conduit in the related art. However, the protective coating is easy to fall off from the surface of the PE cable conduit, and the contact between the cable and the external environment cannot be effectively isolated for a long time.
Disclosure of Invention
In order to solve the problem that a protective coating in a PE cable conduit in the related art is poor in adhesion fastness and easy to fall off, the application provides an anti-corrosion PE cable conduit and a production process thereof.
The application provides an anti-corrosion PE cable conduit adopts following technical scheme:
an anti-corrosion PE cable conduit comprises a PE cable conduit body and a protective coating arranged on the outer periphery of the PE cable conduit body:
the PE cable conduit body is prepared from modified polyethylene, the modified polyethylene comprises polyethylene, p-vinylbenzylamine, vinyl-terminated hydroxyl-terminated silicone oil and filler, and the weight ratio of the high-density polyethylene to the linear low-density polyethylene to the p-vinylbenzylamine to the vinyl-terminated hydroxyl-terminated silicone oil to the filler is 65: (8-13): (12-17): (5.6-7.2);
the protective coating is prepared from corrosion-resistant protective paint.
The application adopts to carry out grafting modification to the polyethylene to vinylbenzylamine, terminal vinyl end hydroxyl silicone oil, carries out polarity modification to the polyethylene through both cooperation to vinylbenzylamine, terminal vinyl end hydroxyl silicone oil, is favorable to improving the adhesion fastness of protective coating and PE cable duct body, has effectively improved the problem that protective coating drops easily from the PE cable duct body, has improved protective coating's guard action to the PE cable duct body, is favorable to prolonging PE cable duct's life.
Optionally, the vinyl-terminated hydroxyl-terminated silicone oil has the following structural formula:
wherein the value range of m is 10-15.
In the application, when the polymerization degree m of the vinyl-terminated hydroxyl-terminated silicone oil is in the range of 10-15, the adhesion fastness of the protective coating and the PE cable duct body can be further improved.
Optionally, the filler adopts at least one of calcium carbonate, silicon dioxide and aluminum oxide.
Optionally, the preparation method of the modified polyethylene comprises the following steps:
uniformly mixing polyethylene, p-vinylbenzylamine and vinyl-terminated hydroxyl-terminated silicone oil, adopting 60 Co-gamma rays are irradiated with the irradiation dose of 100-120KGy, and an irradiation crosslinking product is obtained;
and uniformly mixing the irradiation crosslinking product with the filler, and performing melt extrusion and granulation at 190-240 ℃ to obtain the modified polyethylene.
In the present application, use is made of 60 Co-gamma rays irradiate the mixture of polyethylene, p-vinylbenzylamine and vinyl-terminated hydroxyl silicone oil, so that the p-vinylbenzylamine and the vinyl-terminated hydroxyl silicone oil can be grafted onto the polyethylene, and the adhesion fastness of the protective coating and the PE cable duct is effectively improved through the cooperation of the p-vinylbenzylamine and the vinyl-terminated hydroxyl silicone oil.
Preferably, the polyethylene comprises high density polyethylene and linear low density polyethylene, and the weight ratio of the high density polyethylene to the linear low density polyethylene is (3-4): 1; the melt index of the high-density polyethylene is 0.04-0.1g/10min, and the melt index of the linear low-density polyethylene is 2.1-3.7g/10min.
In the application, the base material of the PE cable conduit body is a composition of which the weight ratio of the high-density polyethylene to the linear low-density polyethylene is (3-4): 1, the melt index of the high-density polyethylene is in the range of 0.04-0.1g/10min, and the melt index of the linear low-density polyethylene is in the range of 2.1-3.7g/10min, so that the surface performance of the PE cable conduit body can be improved, and the adhesion fastness between the protective coating and the PE cable conduit body is improved.
Preferably, the preparation method of the modified polyethylene comprises the following steps:
uniformly mixing high-density polyethylene, 65-75% of the formula amount of the para-vinylbenzylamine and 65-75% of the formula amount of the vinyl-terminated hydroxyl silicone oil to obtain a first premix;
uniformly mixing the linear low-density polyethylene with the residual para-vinylbenzylamine and the vinyl-terminated hydroxyl-terminated silicone oil to obtain a second premix;
respectively adopt 60 Carrying out irradiation crosslinking reaction on the first premix and the second premix by Co-gamma rays, wherein the irradiation dose is 100-120KGy, and obtaining a first crosslinked product and a second crosslinked product;
and uniformly mixing the first cross-linked product, the second cross-linked product and the filler, and then carrying out melt extrusion and granulation at 190-240 ℃ to obtain the modified polyethylene.
In the application, after the high-density polyethylene and the linear low-density polyethylene are respectively subjected to irradiation grafting modification, the high-density polyethylene and the linear low-density polyethylene are mixed and co-extruded with the filler, so that the PE cable duct body with small and uniform surface roughness is obtained, the leveling property and the surface smoothness of the protective coating are further improved, and the adhesion fastness between the protective coating and the PE cable duct body is improved.
Preferably, the corrosion-resistant protective coating comprises organosilicon modified epoxy resin, antibacterial powder, polyamide curing agent and solvent, wherein the weight ratio of the organosilicon modified epoxy resin to the antibacterial powder to the polyamide curing agent to the solvent is (15-20): (2.5-4.2): (10-15): 75.
in the protective coating, the organosilicon modified epoxy resin has the characteristic of high acid corrosion resistance, and the addition of the antibacterial powder can improve the antibacterial effect of the protective coating, so that the PE cable conduit is particularly suitable for the condition of being pre-buried underground. Namely, the protective coating prepared by the protective coating has the characteristics of acid corrosion resistance and antibacterial property, and is particularly suitable for the condition of being pre-buried underground.
Preferably, the antibacterial powder is modified antibacterial powder, the modified antibacterial powder comprises antibacterial powder, an aminosilane coupling agent, allyl epoxy-terminated polyether, hydrogen-containing silicone oil, a platinum catalyst and a dispersing agent, and the weight ratio of the antibacterial powder to the aminosilane coupling agent to the allyl epoxy-terminated polyether to the hydrogen-containing silicone oil to the platinum catalyst to the dispersing agent is (10-15): (1-3): (6-8): (3.6-5.8): (0.02-0.04): 100.
in the application, the antibacterial powder is preferably modified antibacterial powder synergistically modified by an aminosilane coupling agent, allyl epoxy group end-capped polyether and hydrogen-containing silicone oil, the dispersibility of the modified antibacterial powder in the organosilicon modified epoxy resin is good, meanwhile, the stability of the modified antibacterial powder is good, and the protective coating can still maintain excellent antibacterial performance after being corroded by an acidic medium.
Optionally, the hydrogen content of the hydrogen-containing silicone oil is 1.3-1.6wt%.
Optionally, the antibacterial powder adopts at least one of nano zinc oxide and porous ceramic supported biguanide powder.
Optionally, the preparation method of the modified antibacterial powder comprises the following steps:
modifying the antibacterial powder by adopting an aminosilane coupling agent to obtain pre-modified antibacterial powder;
adding allyl epoxy-terminated polyether, hydrogen-containing silicone oil and platinum catalyst into the dispersing agent
Stirring uniformly, adding the pre-modified antibacterial powder, continuously stirring until the powder is uniformly dispersed, heating to 70 ℃, and stirring for reaction for 3 hours; and then filtering, washing and drying to obtain the modified antibacterial powder.
In the application, the antibacterial powder is pre-modified by adopting the aminosilane coupling agent, and the pre-modified antibacterial powder is modified by adopting the allyl epoxy-terminated polyether, so that the dispersibility of the modified antibacterial powder can be effectively improved, and meanwhile, the retention stability of the antibacterial powder under an acidic condition can be prevented, and the acid erosion resistance stability of the protective coating can be improved.
In a second aspect, the production process of the anti-corrosion PE cable duct provided by the application adopts the following technical scheme: the production process of the corrosion-resistant PE cable conduit comprises the following steps of:
melting, extruding, drawing, cooling and shaping the modified polyethylene to obtain a PE cable conduit body;
and uniformly coating protective coating on the outer side of the PE cable conduit body to obtain a protective coating.
In summary, the present application at least includes the following beneficial technical effects:
(1) The application adopts to carry out grafting modification to the polyethylene to vinylbenzylamine, terminal vinyl end hydroxyl silicone oil, carries out polarity modification to the polyethylene through both cooperation to vinylbenzylamine, terminal vinyl end hydroxyl silicone oil, is favorable to improving the adhesion fastness of protective coating and PE cable duct body, has effectively improved the problem that protective coating drops easily from the PE cable duct body, has improved protective coating's guard action to the PE cable duct body, is favorable to prolonging PE cable duct's life.
(2) In the application, the antibacterial powder is preferably modified antibacterial powder synergistically modified by an aminosilane coupling agent, allyl epoxy group end-capped polyether and hydrogen-containing silicone oil, the dispersibility of the modified antibacterial powder in the organosilicon modified epoxy resin is good, meanwhile, the stability of the modified antibacterial powder is good, and the protective coating can still maintain excellent antibacterial performance after being corroded by an acidic medium.
Drawings
Fig. 1 is a schematic structural view of a corrosion-resistant PE cable duct according to the present disclosure.
Reference numerals illustrate:
1. a PE cable conduit body; 2. a protective coating.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Preparation example of modified polyethylene
[ PREPARATION EXAMPLES 1-1 ]
A modified polyethylene comprising the following raw materials:
polyethylene: 65kg; the high-density polyethylene is specifically adopted, the model of the high-density polyethylene is LG chemical HFD0100, and the melt index is 0.1g/10min;
p-vinylbenzylamine: 8kg;
vinyl-terminated hydroxyl-terminated silicone oil: 17kg; specifically, vinyl-terminated hydroxyl-terminated silicone oil with the polymerization degree m of 10 is adopted;
and (3) filling: 5.6kg; specifically, calcium carbonate is used.
In this preparation example, the preparation method of the modified polyethylene is as follows:
uniformly mixing polyethylene, p-vinylbenzylamine and vinyl-terminated hydroxyl-terminated silicone oil, adopting 60 Co-gamma rays are irradiated with the irradiation dose of 100KGy, and an irradiation crosslinking product is obtained;
and uniformly mixing the irradiation crosslinking product with the filler, and performing melt extrusion and granulation at 190 ℃ to obtain the modified polyethylene.
[ PREPARATION EXAMPLES 1-2 ]
A modified polyethylene comprising the following raw materials:
polyethylene: 65kg; the high-density polyethylene and the linear low-density polyethylene are specifically included, the weight ratio of the high-density polyethylene to the linear low-density polyethylene is 3:1, the model of the high-density polyethylene is LG chemical HFD0100, and the melt index is 0.1g/10min; the brand of the linear low density polyethylene is ceramic DFD-4960NT, and the melt index is 2.1g/10min;
p-vinylbenzylamine: 8kg;
vinyl-terminated hydroxyl-terminated silicone oil: 17kg; specifically, vinyl-terminated hydroxyl-terminated silicone oil with the polymerization degree m of 10 is adopted;
and (3) filling: 5.6kg; specifically, calcium carbonate is used.
In this preparation example, the preparation method of the modified polyethylene is as follows:
uniformly mixing high-density polyethylene, low-density polyethylene, p-vinylbenzylamine and vinyl-terminated hydroxyl-terminated silicone oil, adopting 60 Co-gamma rays are irradiated with the irradiation dose of 100KGy, and an irradiation crosslinking product is obtained;
and uniformly mixing the irradiation crosslinking product with the filler, and performing melt extrusion and granulation at 190 ℃ to obtain the modified polyethylene.
[ PREPARATION EXAMPLES 1-3 ]
A modified polyethylene differs from [ PREPARATIVE EXAMPLES 1-2 ] in that: the preparation methods of the modified polyethylene are different.
In this preparation example, the preparation method of the modified polyethylene is as follows:
uniformly mixing high-density polyethylene, 70% of the formula amount of p-vinylbenzylamine and 70% of the formula amount of vinyl-terminated hydroxyl silicone oil to obtain a first premix;
uniformly mixing the linear low-density polyethylene with the residual para-vinylbenzylamine and the vinyl-terminated hydroxyl-terminated silicone oil to obtain a second premix;
respectively adopt 60 Carrying out irradiation crosslinking reaction on the first premix and the second premix by Co-gamma rays, wherein the irradiation dose is 100KGy, and obtaining a first crosslinked product and a second crosslinked product;
and uniformly mixing the first cross-linked product, the second cross-linked product and the filler, and then carrying out melt extrusion and granulation at 190 ℃ to obtain the modified polyethylene.
[ PREPARATIVE EXAMPLES 1-4 ]
A modified polyethylene differs from [ PREPARATIVE EXAMPLES 1-3 ] in that: the compositions of the polyethylenes used for the modified polyethylenes are different.
In the preparation example, the polyethylene comprises high-density polyethylene and linear low-density polyethylene, the weight ratio of the high-density polyethylene to the linear low-density polyethylene is 1:1, the model of the high-density polyethylene is LG chemical HFD0100, and the melt index is 0.1g/10min; the linear low density polyethylene has the brand of Dow DFD-4960NT and a melt index of 2.1g/10min.
[ PREPARATION EXAMPLES 1-5 ]
A modified polyethylene differs from [ PREPARATIVE EXAMPLES 1-3 ] in that: the type and melt index of the linear low density polyethylene were different, in this example, the linear low density polyethylene was Han Hua and 2560, and the melt index was 5g/10min.
[ PREPARATIVE EXAMPLES 1-6 ]
A modified polyethylene differs from [ PREPARATIVE EXAMPLES 1-3 ] in that: the raw materials and the proportions of the modified polyethylene are different.
Polyethylene: 65kg; the high-density polyethylene and linear low-density polyethylene are specifically included, the weight ratio of the high-density polyethylene to the linear low-density polyethylene is 3:1, the model of the high-density polyethylene is bench plastic 9001, the melt index is 0.05g/10min, the brand of the linear low-density polyethylene is Dow 2111GC, and the melt index is 3.7g/10min;
p-vinylbenzylamine: 13kg;
vinyl-terminated hydroxyl-terminated silicone oil: 12kg; specifically, vinyl-terminated hydroxyl-terminated silicone oil with the polymerization degree m of 15 is adopted;
and (3) filling: 7.2kg; silica is particularly used.
Preparation example of protective coating
[ PREPARATION EXAMPLE 2-1 ]
The protective coating comprises the following raw materials:
epoxy resin: 17.5kg; bisphenol A epoxy resin E-44 is specifically adopted;
antibacterial powder: 3.8kg; specifically, zinc oxide is adopted;
polyamide curing agents: 12.5kg; specifically, polyamide 650 is used;
solvent: 75kg; the catalyst comprises ethyl acetate and acetone in a weight ratio of 2:1.
In this preparation example, the preparation method of the protective coating is as follows:
uniformly dispersing epoxy resin in a solvent, then adding antibacterial powder, uniformly stirring, then adding polyamide curing agent, and stirring again to obtain the protective coating.
[ PREPARATION EXAMPLE 2-2 ]
A protective coating differs from [ PREPARATION EXAMPLE 2-1 ] in that:
the epoxy resin was replaced with an equivalent amount of an organosilicon modified epoxy resin available from Lv Biing chemical technology Co., ltd, model TY-H26.
[ PREPARATION EXAMPLES 2-3 ]
A protective coating differs from [ PREPARATIVE EXAMPLE 2-2 ] in that:
the antibacterial powder adopts modified antibacterial powder, and in the preparation example, the modified antibacterial powder comprises the following raw materials:
antibacterial powder: 12.5kg; specifically, zinc oxide is adopted;
aminosilane coupling agent: 2kg; an aminosilane coupling agent KH550 is specifically adopted;
ethanol solution: 100kg; specifically, an ethanol solution with a mass concentration of 5% is adopted.
The preparation method of the modified antibacterial powder comprises the following steps:
dissolving an aminosilane coupling agent in an ethanol solution, adding antibacterial powder, uniformly dispersing by ultrasonic at 25 ℃, and then filtering, washing and drying to obtain modified antibacterial powder.
[ PREPARATIVE EXAMPLES 2-4 ]
A protective coating differs from [ PREPARATIVE EXAMPLE 2-2 ] in that:
the antibacterial powder adopts modified antibacterial powder, and in the preparation example, the modified antibacterial powder comprises the following raw materials:
antibacterial powder: 12.5kg; specifically, zinc oxide is adopted;
allyl epoxy-terminated polyether: 7kg; specifically, active allyl epoxy end capped polyether KL-91B;
hydrogen-containing silicone oil: 4.6kg; the hydrogen-containing silicone oil with the model number of SH-202 is specifically adopted, and the hydrogen content of the hydrogen-containing silicone oil is 1.6%; platinum catalyst: 0.03kg; the method specifically adopts a chloroplatinic acid-ethanol solution catalyst;
dispersing agent: 100kg; in particular, xylene is used.
In this preparation example, the preparation method of the modified antibacterial powder comprises the following steps:
adding allyl epoxy capped polyether, hydrogen-containing silicone oil and a platinum catalyst into a dispersing agent, uniformly stirring, adding antibacterial powder, continuously stirring until the antibacterial powder is uniformly dispersed, heating to 70 ℃, and stirring for reaction for 3 hours; and then filtering, washing and drying to obtain the modified antibacterial powder.
[ PREPARATIVE EXAMPLES 2-5 ]
A protective coating differs from [ PREPARATIVE EXAMPLE 2-2 ] in that:
the antibacterial powder adopts modified antibacterial powder, and in the preparation example, the modified antibacterial powder comprises the following raw materials:
antibacterial powder: 12.5kg; specifically, zinc oxide is adopted;
aminosilane coupling agent: 2kg; an aminosilane coupling agent KH550 is specifically adopted;
ethanol solution: 100kg; specifically, ethanol solution with the mass concentration of 5% is adopted;
allyl epoxy-terminated polyether: 7kg; specifically, active allyl epoxy end capped polyether KL-91B;
hydrogen-containing silicone oil: 4.6kg; the hydrogen-containing silicone oil with the model number of SH-202 is specifically adopted, and the hydrogen content of the hydrogen-containing silicone oil is 1.6%; platinum catalyst: 0.03kg; a chloroplatinic acid-ethanol catalyst is specifically adopted;
dispersing agent: 100kg; in particular, xylene is used.
In this preparation example, the preparation method of the modified antibacterial powder comprises the following steps:
dissolving an aminosilane coupling agent in an ethanol solution, adding antibacterial powder, uniformly dispersing by ultrasonic at 25 ℃, and then filtering, washing and drying to obtain pre-modified antibacterial powder;
adding allyl epoxy capped polyether, hydrogen-containing silicone oil and a platinum catalyst into a dispersing agent, uniformly stirring, adding pre-modified antibacterial powder, continuously stirring until the mixture is uniformly dispersed, heating to 70 ℃, and stirring for reaction for 3 hours; and then filtering, washing and drying to obtain the modified antibacterial powder.
[ example 1 ]
An anti-corrosion PE cable conduit, referring to FIG. 1, comprises a PE cable conduit body 1 and a protective coating 2 which are arranged from inside to outside.
In this embodiment, the production process of the anti-corrosion PE cable duct includes the following steps:
the modified polyethylene prepared in the preparation example 1-1 is subjected to melt extrusion, traction and cooling shaping at 186 ℃ to obtain a PE cable conduit body 1 with the outer diameter of 110mm and the wall thickness of 3.0 mm;
the protective coating material of [ preparation example 2-1 ] was uniformly applied to the outer peripheral side of the PE cable duct body 1, and cured to obtain a protective coating layer 2 having a thickness of 15 μm.
[ example 2 ]
A corrosion resistant PE cable duct, which differs from [ example 1 ] in that:
the modified polyethylene prepared in preparation example 1-1 was replaced with the modified polyethylene prepared in preparation example 1-2.
[ example 3 ]
A corrosion resistant PE cable duct, which differs from [ example 1 ] in that:
the modified polyethylene prepared in preparation examples 1 to 1 was replaced with the modified polyethylene prepared in preparation examples 1 to 3.
[ example 4 ]
A corrosion resistant PE cable duct, which differs from [ example 1 ] in that:
the modified polyethylene prepared in [ preparation examples 1-1 ] was replaced with the modified polyethylene prepared in [ preparation examples 1-4 ].
[ example 5 ]
A corrosion resistant PE cable duct, which differs from [ example 1 ] in that:
the modified polyethylene prepared in [ preparation examples 1-1 ] was replaced with the modified polyethylene prepared in [ preparation examples 1-5 ].
[ example 6 ]
A corrosion resistant PE cable duct, which differs from [ example 1 ] in that:
the modified polyethylene prepared in [ preparation examples 1-1 ] was replaced with the modified polyethylene prepared in [ preparation examples 1-6 ].
In addition, in this example, when the PE cable duct body 1 was prepared, the modified polyethylenes prepared [ preparations 1 to 6 ] were melt extruded at 225 ℃.
[ example 7 ]
A corrosion resistant PE cable duct, differing from [ example 3 ] in that:
the protective coating material in preparation example 2-1 was replaced with the protective coating material prepared in preparation example 2-2.
[ example 8 ]
A corrosion resistant PE cable duct, differing from [ example 3 ] in that:
the protective coating material in preparation examples 2 to 1 was replaced with the protective coating material prepared in preparation examples 2 to 3.
[ example 9 ]
A corrosion resistant PE cable duct, differing from [ example 3 ] in that:
the protective coating material in preparation examples 2 to 1 was replaced with the protective coating material prepared in preparation examples 2 to 4.
[ example 10 ]
A corrosion resistant PE cable duct, differing from [ example 3 ] in that:
the protective coating material in preparation examples 2 to 1 was replaced with the protective coating material prepared in preparation examples 2 to 5.
Comparative example
Comparative example 1
A PE cable duct differing from [ example 1 ] in that:
in this comparative example, a high density polyethylene was used instead of the modified polyethylene produced [ PREPARATIVE EXAMPLE 1-1 ]. The model of the high-density polyethylene is LG chemical HFD0100, and the melt index is 0.1g/10min.
Comparative example 2
A PE cable duct differing from [ example 1 ] in that:
in this comparative example, the starting material in the modified polyethylene was replaced with an equivalent amount of vinyl-terminated hydroxyl-terminated silicone oil, the polymerization degree m of which was 10.
[ comparative example 3 ]
A PE cable duct differing from [ example 1 ] in that:
in this comparative example, the starting vinyl-terminated hydroxyl-terminated silicone oil in the modified polyethylene was replaced with an equivalent amount of p-vinylbenzylamine.
Performance test
1. Protective coating adhesion fastness: the production process of PE cable conduits in each example and comparative example is adopted to prepare a flat test board with the same size, the test board comprises a test board body prepared from modified polyethylene or polyethylene corresponding to each example, the surface of the test board body is uniformly coated with protective coating corresponding to each example and comparative example, wherein the thickness of the formed protective coating is 15 mu m, and the thickness of the test board body is 3mm. Then, the test panels were diced with reference to GB/T9286-2021 "color paint and varnish dicing test", then a protective coating was adhered with a pressure-sensitive adhesive tape, the pressure-sensitive adhesive tape was peeled off at 60℃after ensuring no air bag, and the average amount of peeling off of the protective coating before and after peeling off the pressure-sensitive adhesive tape was tested in each group of test panels.
2. Acid etch adhesion fastness of protective coating: immersing each group of test plates prepared in the test (1) in 0.1mol/L hydrochloric acid solution for 24 hours, taking out, washing to be neutral, and drying to obtain the plates to be tested. The average amount of release of the protective coating before and after tearing away from the pressure sensitive adhesive tape was measured in each group of panels after the acid treatment by referring to the method in test (1).
3. Protective coating antimicrobial properties: the cable ducts prepared in each example and comparative example are respectively buried in test soil, and based on the original test soil microorganisms, bacillus subtilis, pseudomonas, radiorhizobium and staphylococcus aureus are additionally added, wherein the addition amount of the bacillus subtilis is about 2.5 x 10 9 A plurality of; the addition amount of pseudomonas is about 4.8x10 9 A plurality of; the addition amount of the radioactive rhizobia is 7.6x10 8 A plurality of; the addition amount of staphylococcus aureus is 5.2 x 10 9 A plurality of; storing for one year at 35 ℃ under the condition of 90% relative humidity, taking out the cable duct, and observing whether mildew or cracks exist on the surface.
4. Acid etch resistance of protective coating: the cable ducts prepared in each example and comparative example were immersed in 0.1mol/L hydrochloric acid solution for 24 hours, and then taken out, washed to neutrality and dried. Then respectively burying the cable ducts after acid treatment into test soil, and additionally adding bacillus subtilis, pseudomonas, radioactive rhizobium and staphylococcus aureus based on the original test soil microorganisms, wherein the addition amount of the bacillus subtilis is aboutIs 2.5 x 10 9 A plurality of; the addition amount of pseudomonas is about 4.8x10 9 A plurality of; the addition amount of the radioactive rhizobia is 7.6x10 8 A plurality of; the addition amount of staphylococcus aureus is 5.2 x 10 9 A plurality of; storing for one year at 35 ℃ under the condition of 90% relative humidity, taking out the cable duct, and observing whether mildew or cracks exist on the surface.
TABLE 1
Combining example 1 with comparative examples 1-3 and combining the data in table 1, it can be seen that: compared with the PE cable duct body 1 prepared by directly adopting polyethylene, or modified polyethylene obtained by modifying polyethylene by singly adopting vinylbenzylamine, or modified polyethylene obtained by singly adopting vinyl-terminated hydroxyl silicone oil to modify polyethylene, the PE cable duct body 1 is prepared by adopting modified polyethylene obtained by jointly modifying polyethylene by adopting vinylbenzylamine and vinyl-terminated hydroxyl silicone oil, the shedding amount of the protective coating 2 is obviously reduced, and the cooperation of the vinylbenzylamine and the vinyl-terminated hydroxyl silicone oil is more beneficial to improving the adhesion fastness between the protective coating 2 and the PE cable duct body 1.
It can be seen from the data in Table 1 in combination with examples 1, 2-5: the surface properties of the PE cable conduit body 1 can also be improved by the composition of the preferred polyethylene and the preferred method of preparing the modified polyethylene, which is advantageous for improving the adhesion fastness between the protective coating 2 and the PE cable conduit body 1.
Combining example 3 with examples 8-10 and combining the data in Table 1, it can be seen that: the antibacterial powder adopts the modified antibacterial powder which is synergistically modified by an aminosilane coupling agent, allyl epoxy group end-capped polyether and hydrogen-containing silicone oil, the dispersibility of the modified antibacterial powder in the organosilicon modified epoxy resin is good, meanwhile, the stability of the modified antibacterial powder is good, and the protective coating 2 can still maintain excellent antibacterial performance after being corroded by an acidic medium.
The present embodiment is merely illustrative of the present application and is not limiting of the present application, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as necessary, but are protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. A corrosion resistant PE cable conduit characterized by: comprises a PE cable conduit body (1) and a protective coating (2) arranged on the outer peripheral side of the PE cable conduit body (1):
the PE cable conduit body (1) is prepared from modified polyethylene, the modified polyethylene comprises polyethylene, p-vinylbenzylamine, vinyl-terminated hydroxyl-terminated silicone oil and filler, and the weight ratio of the polyethylene to the p-vinylbenzylamine to the vinyl-terminated hydroxyl-terminated silicone oil to the filler is 65: (8-13): (12-17): (5.6-7.2);
the protective coating (2) is prepared from corrosion-resistant protective paint.
2. A corrosion resistant PE cable duct according to claim 1, wherein: the structural formula of the vinyl-terminated hydroxyl-terminated silicone oil is as follows:
wherein, the value range of m is 10-15, and the polymerization degree is 10-15.
3. A corrosion resistant PE cable duct according to claim 1, wherein: the filler adopts at least one of calcium carbonate, silicon dioxide and aluminum oxide.
4. A corrosion resistant PE cable duct according to any one of claims 1-3, wherein: the preparation method of the modified polyethylene comprises the following steps:
uniformly mixing polyethylene, p-vinylbenzylamine and vinyl-terminated hydroxyl-terminated silicone oil, adopting 60 Co-gamma ray irradiationThe dose is 100-120KGy, and the irradiation crosslinking product is obtained;
and uniformly mixing the irradiation crosslinking product with the filler, and performing melt extrusion and granulation at 190-240 ℃ to obtain the modified polyethylene.
5. A corrosion resistant PE cable duct according to any one of claims 1-3, wherein: the polyethylene comprises high-density polyethylene and linear low-density polyethylene, and the weight ratio of the high-density polyethylene to the linear low-density polyethylene is (3-4) 1; the melt index of the high-density polyethylene is 0.04-0.1g/10min, and the melt index of the linear low-density polyethylene is 2.1-3.7g/10min.
6. A corrosion resistant PE cable duct according to claim 5, wherein: the preparation method of the modified polyethylene comprises the following steps:
uniformly mixing high-density polyethylene, 65-75% of the formula amount of the para-vinylbenzylamine and 65-75% of the formula amount of the vinyl-terminated hydroxyl silicone oil to obtain a first premix;
uniformly mixing the linear low-density polyethylene with the residual para-vinylbenzylamine and the vinyl-terminated hydroxyl-terminated silicone oil to obtain a second premix;
respectively adopt 60 Carrying out irradiation crosslinking reaction on the first premix and the second premix by Co-gamma rays, wherein the irradiation dose is 100-120KGy, and obtaining a first crosslinked product and a second crosslinked product;
and uniformly mixing the first cross-linked product, the second cross-linked product and the filler, and then carrying out melt extrusion and granulation at 190-240 ℃ to obtain the modified polyethylene.
7. A corrosion resistant PE cable duct according to claim 1, wherein: the corrosion-resistant protective coating comprises organosilicon modified epoxy resin, antibacterial powder, polyamide curing agent and solvent, wherein the weight ratio of the organosilicon modified epoxy resin to the antibacterial powder to the polyamide curing agent to the solvent is (15-20): (2.5-4.2): (10-15): 75.
8. a corrosion resistant PE cable duct according to claim 7, wherein: the antibacterial powder adopts modified antibacterial powder, the modified antibacterial powder comprises antibacterial powder, an aminosilane coupling agent, allyl epoxy capped polyether, hydrogen-containing silicone oil, a platinum catalyst and a dispersing agent, wherein the weight ratio of the antibacterial powder to the aminosilane coupling agent to the allyl epoxy capped polyether to the hydrogen-containing silicone oil to the platinum catalyst to the dispersing agent is (10-15): (1-3): (6-8): (3.6-5.8): (0.02-0.04): 100.
9. a corrosion resistant PE cable duct according to claim 8, wherein: the preparation method of the modified antibacterial powder comprises the following steps:
modifying the antibacterial powder by adopting an aminosilane coupling agent to obtain pre-modified antibacterial powder;
adding allyl epoxy capped polyether, hydrogen-containing silicone oil and a platinum catalyst into a dispersing agent, uniformly stirring, adding pre-modified antibacterial powder, continuously stirring until the mixture is uniformly dispersed, heating to 70 ℃, and stirring for reaction for 3 hours; and then filtering, washing and drying to obtain the modified antibacterial powder.
10. A process for producing a corrosion resistant PE cable duct according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
melting, extruding, drawing, cooling and shaping the modified polyethylene to obtain a PE cable conduit body (1);
and uniformly coating protective coating on the outer peripheral side of the PE cable conduit body (1) to obtain a protective coating (2).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000230025A (en) * | 1999-02-12 | 2000-08-22 | Ube Ind Ltd | Silane-modified linear polyethylene for power cable covering, and power cable |
| CN113621191A (en) * | 2021-08-09 | 2021-11-09 | 厦门大学 | Regenerated polyethylene cable sheath material and preparation method thereof |
| CN114940785A (en) * | 2022-05-20 | 2022-08-26 | 万华化学集团股份有限公司 | High-rigidity scratch-resistant antibacterial polyethylene film and preparation method thereof |
| CN116759148A (en) * | 2023-06-07 | 2023-09-15 | 安徽鸿海电缆有限公司 | Crosslinked polyethylene insulation corrosion-resistant power cable and production process thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000230025A (en) * | 1999-02-12 | 2000-08-22 | Ube Ind Ltd | Silane-modified linear polyethylene for power cable covering, and power cable |
| CN113621191A (en) * | 2021-08-09 | 2021-11-09 | 厦门大学 | Regenerated polyethylene cable sheath material and preparation method thereof |
| CN114940785A (en) * | 2022-05-20 | 2022-08-26 | 万华化学集团股份有限公司 | High-rigidity scratch-resistant antibacterial polyethylene film and preparation method thereof |
| CN116759148A (en) * | 2023-06-07 | 2023-09-15 | 安徽鸿海电缆有限公司 | Crosslinked polyethylene insulation corrosion-resistant power cable and production process thereof |
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