CN114709030A - Preparation method of B1-level wire cable - Google Patents
Preparation method of B1-level wire cable Download PDFInfo
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- CN114709030A CN114709030A CN202210214766.4A CN202210214766A CN114709030A CN 114709030 A CN114709030 A CN 114709030A CN 202210214766 A CN202210214766 A CN 202210214766A CN 114709030 A CN114709030 A CN 114709030A
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- silver coating
- resin powder
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- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 122
- 239000000463 material Substances 0.000 claims abstract description 81
- 239000003063 flame retardant Substances 0.000 claims abstract description 59
- 238000000576 coating method Methods 0.000 claims abstract description 58
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000006255 coating slurry Substances 0.000 claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 112
- 239000007822 coupling agent Substances 0.000 claims description 96
- 239000000843 powder Substances 0.000 claims description 76
- 239000011347 resin Substances 0.000 claims description 73
- 229920005989 resin Polymers 0.000 claims description 73
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 70
- 229910052810 boron oxide Inorganic materials 0.000 claims description 60
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 60
- 239000005543 nano-size silicon particle Substances 0.000 claims description 56
- 235000012239 silicon dioxide Nutrition 0.000 claims description 52
- 239000012188 paraffin wax Substances 0.000 claims description 36
- 239000004698 Polyethylene Substances 0.000 claims description 35
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 35
- UBXIPPSTBVKKIK-UHFFFAOYSA-N dinonyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCCC)C=C1 UBXIPPSTBVKKIK-UHFFFAOYSA-N 0.000 claims description 35
- -1 polyethylene Polymers 0.000 claims description 35
- 229920000573 polyethylene Polymers 0.000 claims description 35
- 239000001993 wax Substances 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 31
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical group O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 24
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 22
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 21
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 239000001856 Ethyl cellulose Substances 0.000 claims description 8
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 8
- 239000004712 Metallocene polyethylene (PE-MC) Substances 0.000 claims description 8
- 229920001249 ethyl cellulose Polymers 0.000 claims description 8
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 8
- 238000004898 kneading Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 16
- 238000002485 combustion reaction Methods 0.000 abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 14
- 239000001569 carbon dioxide Substances 0.000 abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 7
- 239000003054 catalyst Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 23
- 239000007789 gas Substances 0.000 description 8
- 238000003889 chemical engineering Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- WUOBERCRSABHOT-UHFFFAOYSA-N diantimony Chemical compound [Sb]#[Sb] WUOBERCRSABHOT-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
A B1 level wire cable preparation method comprises the steps of providing a cable core, an insulating layer, a sheath layer prepared from a fireproof sheath material and a nano silver coating, wherein the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer; the coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1-grade wire cable. According to the B1-level wire cable, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, and the carbon dioxide surrounds the sheath layer to prevent the sheath layer from further combustion, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a preparation method of a B1-grade wire cable.
Background
According to related data, the fire hazard caused by the electric wire and the cable is relatively large in proportion in the fire hazard in China, the fire hazard accident is further expanded due to the fact that the electric wire and the cable are combustible insulation or sheath materials during the fire hazard, and the life and property are further injured or damaged due to heat, toxic gas and dense smoke emitted during the combustion of the electric wire and the cable insulation and sheath materials. The B1 level cable is a cable with the flame retardant grade reaching ZB level, the flame retardant requirement of the level cable is higher, while the flame retardant of the B1 level cable in the prior art is mainly characterized in that phosphorus and halogen flame retardants are added into a sheath material, and the flame retardants generate harmful gases in the material.
Therefore, it is necessary to provide a method for preparing B1 grade cable to solve the deficiencies of the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides a preparation method of a B1-grade wire cable. The B1-grade wire cable prepared by the preparation method has good flame retardant effect and no harmful gas.
The above object of the present invention is achieved by the following technical measures:
the preparation method of the B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano-silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano-silver coating is coated on the sheath layer.
Preferably, the coating method of the nano-silver coating is to spray a pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
Preferably, the nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silica.
Preferably, the raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 1400-2000, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 1% -6%;
nano silver particles: 0.01 to 2.0 percent;
coupling agent A: 0.2% -2.0%;
boron oxide: 0.5 to 3.0 percent;
nano silicon dioxide: 0.5 to 3.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 30-60 parts;
dinonyl terephthalate: 5-25 parts;
chlorinated paraffin: 2-10 parts;
polyethylene wax: 0.05 to 0.3 portion;
a coupling agent B: 1-4 parts;
nano calcium carbonate: 10-30 parts;
flame retardant: 2-12 parts;
nano silicon dioxide: 2-8 parts;
boron oxide: 2 to 8 portions.
Further, the nano silver coating slurry is prepared by mixing the components in percentage by weight,
resin powder A: 2 to 4 percent;
nano silver particles: 0.05 to 1.0 percent;
coupling agent A: 0.5 to 1.0 percent;
boron oxide: 1.0% -2.0%;
nano silicon dioxide: 1.0 to 2.0 percent.
Further, the fireproof sheath material comprises, in parts by weight,
resin powder B: 40-55 parts;
dinonyl terephthalate: 10-20 parts;
chlorinated paraffin: 5-8 parts of a solvent;
polyethylene wax: 0.1 to 0.2 portion;
a coupling agent B: 1.5 to 2 parts;
nano calcium carbonate: 15-20 parts of a stabilizer;
Flame retardant: 3-6 parts;
nano silicon dioxide: 3-5 parts;
boron oxide: 3 to 5 portions.
Preferably, the coupling agent a is a silane coupling agent or a titanate coupling agent.
Preferably, the resin powder a is polyurethane, ethylcellulose or metallocene polyethylene.
Preferably, the coupling agent B is a titanate coupling agent.
Preferably, the flame retardant is antimony trioxide and aluminum hydroxide.
Preferably, the preparation method of the nano-silver coating slurry comprises the following steps:
step A, adding nano silver particles and a coupling agent A into a propylene glycol solution of resin powder A, and performing ultrasonic dispersion to obtain a mixed solution;
and step B, adding boron oxide and nano silicon dioxide into the mixed solution, and performing ultrasonic dispersion to obtain nano silver coating slurry.
Preferably, the preparation of the fireproof sheathing material comprises the steps of:
firstly, placing resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax in a high-speed kneader, heating to 90-110 ℃, kneading and stirring for 8-15 min to obtain a mixture;
and step three, placing the mixture in a granulator, controlling the temperature to be 130-150 ℃, extruding and granulating, cutting and cooling to obtain the fireproof sheath material.
The preparation method of the B1-grade wire cable comprises the steps of providing a cable core, an insulating layer, a sheath layer prepared from a fireproof sheath material and a nano-silver coating, wherein the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano-silver coating is coated on the sheath layer; the coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable. According to the B1-grade wire cable, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the sheath layer is surrounded by the carbon dioxide, and the sheath layer is prevented from further combustion, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1.
A preparation method of a B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano silver coating slurry contains resin powder A, a solvent, nano silver particles, a coupling agent A, boron oxide and nano silicon dioxide.
The fireproof sheath material comprises resin powder B with the polymerization degree of 1400-2000, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 1% -6%;
nano silver particles: 0.01 to 2.0 percent;
coupling agent A: 0.2% -2.0%;
boron oxide: 0.5 to 3.0 percent;
nano silicon dioxide: 0.5 to 3.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 30-60 parts;
dinonyl terephthalate: 5-25 parts;
chlorinated paraffin: 2-10 parts;
polyethylene wax: 0.05 to 0.3 portion;
a coupling agent B: 1-4 parts;
nano calcium carbonate: 10-30 parts;
flame retardant: 2-12 parts;
nano silicon dioxide: 2-8 parts;
boron oxide: 2 to 8 portions.
Wherein the coupling agent A is a silane coupling agent or a titanate coupling agent. The resin powder A is polyurethane, ethyl cellulose or metallocene polyethylene. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
The surface of the sheath layer is smooth, so that the surface energy of the sheath layer is lower, other substances are difficult to adsorb, and the nano silver coating slurry cannot dissolve or swell the sheath layer. The nano-silver coating slurry is matched with boron oxide and nano-silicon dioxide in the fireproof sheath material, so that the surface tension of the nano-silver coating slurry in the fireproof sheath material is reduced, and the nano-silver coating slurry is favorable for wetting and spreading on a sheath layer. The coupling agent A of the nano-silver coating slurry and the coupling agent B of the fireproof sheath material produce a bidirectional coupling effect between the nano-silver coating and the sheath layer, so that the interface is enhanced, the binding force is enhanced, and the attachment time of the nano-silver coating is prolonged.
The resin powder B with the polymerization degree of 1400-2000 can improve elasticity and flexibility. The dinonyl terephthalate and the chlorinated paraffin are used as plasticizers to improve the mechanical properties of the resin powder B such as folding resistance, impact resistance and the like. While polyethylene wax can serve as a lubricant to increase the compatibility with the resin powder B. The nanometer calcium carbonate and the chlorinated paraffin act to increase the stability of the invention.
The preparation method of the nano-silver coating slurry comprises the following steps:
step A, adding nano silver particles and a coupling agent A into a propylene glycol solution of resin powder A, and performing ultrasonic dispersion to obtain a mixed solution;
and step B, adding boron oxide and nano silicon dioxide into the mixed solution, and performing ultrasonic dispersion to obtain nano silver coating slurry.
According to the B1-level wire cable obtained by the preparation method of the B1-level wire cable, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the carbon dioxide surrounds the sheath layer, and the sheath layer is prevented from further combustion, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Example 2.
A preparation method of a B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
The fireproof sheath material comprises resin powder B with the polymerization degree of 1400-2000, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 2% -4%;
nano silver particles: 0.05 percent to 1.0 percent;
coupling agent A: 0.5 to 1.0 percent;
boron oxide: 1.0% -2.0%;
nano silicon dioxide: 1.0 to 2.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 40-55 parts;
dinonyl terephthalate: 10-20 parts;
chlorinated paraffin: 5-8 parts of a solvent;
polyethylene wax: 0.1 to 0.2 portion;
a coupling agent B: 1.5 to 2 parts;
nano calcium carbonate: 15-20 parts of a stabilizer;
flame retardant: 3-6 parts;
nano silicon dioxide: 3-5 parts;
boron oxide: 3 to 5 portions.
Wherein the coupling agent A is a silane coupling agent or a titanate coupling agent. The resin powder A is polyurethane, ethyl cellulose or metallocene polyethylene. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade cable prepared by the method are better than those of the example 1.
Example 3.
A preparation method of a B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
The raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 1890, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 1 percent;
nano silver particles: 0.01 percent;
coupling agent A: 0.2 percent;
Boron oxide: 0.5 percent;
nano silicon dioxide: 0.5 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 30 parts of (1);
dinonyl terephthalate: 5 parts of a mixture;
chlorinated paraffin: 2 parts of (1);
polyethylene wax: 0.05 part;
a coupling agent B: 1 part;
nano calcium carbonate: 10 parts of (A);
flame retardant: 2 parts of (1);
nano silicon dioxide: 2 parts of (1);
boron oxide: and 2 parts.
Wherein the coupling agent A is a silane coupling agent. The resin powder A is ethyl cellulose. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein the ethyl cellulose and the resin powder B are purchased from Ningbo weiquah plastication Limited, the dinonyl terephthalate is purchased from chateau plastic auxiliary agent Limited, the chlorinated paraffin and the polyethylene wax are purchased from Roland New Material Limited, Yangzhou, the polyethylene oxide is purchased from Jiangsu Runfeng Synthesis technology Limited, the nano calcium carbonate is purchased from Deyuan commerce Limited, the boron oxide is purchased from Shandong Hao Shuichao chemical engineering Limited, the nano nickel powder is purchased from 28095, the Zhongzhou Huanfeng New Material technology Limited, the nano silicon dioxide is purchased from Hangzhou Heggan nanometer technology Limited, the silane coupling agent and the titanate coupling agent are purchased from Nanjing Xuan New Material technology Limited, the diantimony trioxide is purchased from Shijiazhuang chemical engineering product Bai technology Limited, the aluminum hydroxide is purchased from Nanchen Xinxing technology, and the nano silver particles are purchased from Guanzhou Wu Hongkong materials technology Limited.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade wire cable prepared by the preparation method are better than those of the example 1.
Example 4.
A preparation method of a B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
The raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 1850, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 6 percent;
nano silver particles: 2.0 percent;
coupling agent A: 2.0 percent;
Boron oxide: 3.0 percent;
nano silicon dioxide: 3.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 60 parts;
dinonyl terephthalate: 25 parts of (1);
chlorinated paraffin: 10 parts of (A);
polyethylene wax: 0.3 part;
a coupling agent B: 4 parts of a mixture;
nano calcium carbonate: 30 parts of (1);
flame retardant: 12 parts of (1);
nano silicon dioxide: 8 parts of a mixture;
boron oxide: 8 parts.
Wherein the coupling agent A is a silane coupling agent. The resin powder A is polyurethane. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein polyurethane and resin powder B are both from Ningbo bright Yew plastification Co., Ltd, dinonyl terephthalate is from Toxico Ribang plastics additives Co., Ltd, chlorinated paraffin and polyethylene wax are from Roland New Material Co., Yangzhou, polyethylene oxide is from Jiangsu Runfeng Synthesis technology Co., Ltd, nano calcium carbonate is from Deyuan commerce Co., Ltd, boron oxide is from Shandong Hao Shuihu chemical Co., Ltd, nano nickel powder is from 28095, Zhou Huizhou New Material technology Co., Ltd, nano silicon dioxide is from Hengge Nano technology Co., Ltd, silane coupling agent and titanate coupling agent are from Nanjing Hao New Material technology Co., Ltd, antimony trioxide is from Shijiazhuang product Bai chemical engineering Co., Ltd, aluminum hydroxide is from Nancheng Jixing Co., Ltd, and nano silver particles are from Guangzhou Wu materials technology Co., Ltd.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade cable prepared by the method are better than those of the example 1.
Example 5.
A preparation method of a B1-grade wire cable is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
The raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 2000, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 2 percent;
nano silver particles: 0.05 percent;
coupling agent A: 0.5 percent;
Boron oxide: 1.0 percent;
nano silicon dioxide: 1.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 40 parts of a mixture;
dinonyl terephthalate: 10 parts of (A);
chlorinated paraffin: 5 parts of a mixture;
polyethylene wax: 0.1 part;
a coupling agent B: 1.5 parts;
nano calcium carbonate: 15 parts of (1);
flame retardant: 3 parts of a mixture;
nano silicon dioxide: 3 parts of a mixture;
boron oxide: and 3 parts.
Wherein the coupling agent A is a silane coupling agent. The resin powder A is polyurethane. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein polyurethane and resin powder B are both from Ningbo bright Yew plastification Co., Ltd, dinonyl terephthalate is from Toxico Ribang plastics additives Co., Ltd, chlorinated paraffin and polyethylene wax are from Roland New Material Co., Yangzhou, polyethylene oxide is from Jiangsu Runfeng Synthesis technology Co., Ltd, nano calcium carbonate is from Deyuan commerce Co., Ltd, boron oxide is from Shandong Hao Shuihu chemical Co., Ltd, nano nickel powder is from 28095, Zhou Huizhou New Material technology Co., Ltd, nano silicon dioxide is from Hengge Nano technology Co., Ltd, silane coupling agent and titanate coupling agent are from Nanjing Hao New Material technology Co., Ltd, antimony trioxide is from Shijiazhuang product Bai chemical engineering Co., Ltd, aluminum hydroxide is from Nancheng Jixing Co., Ltd, and nano silver particles are from Guangzhou Wu materials technology Co., Ltd.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade wire cable prepared by the preparation method are better than those of the example 1.
Example 6.
A B1-level wire cable preparation method is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano silver coating slurry contains resin powder A, a solvent, nano silver particles, a coupling agent A, boron oxide and nano silicon dioxide.
The raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 1400, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 4 percent;
nano silver particles: 1.0 percent;
coupling agent A: 1.0 percent;
Boron oxide: 2.0 percent;
nano silicon dioxide: 2.0 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 55 parts of (1);
dinonyl terephthalate: 20 parts of (1);
chlorinated paraffin: 8 parts of a mixture;
polyethylene wax: 0.2 part;
a coupling agent B: 2 parts of (1);
nano calcium carbonate: 20 parts of (1);
flame retardant: 6 parts of (1);
nano silicon dioxide: 5 parts of a mixture;
boron oxide: 5 parts of the raw materials.
Wherein the coupling agent A is a silane coupling agent. The resin powder A is polyurethane and metallocene polyethylene. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein the polyurethane and resin powder B are obtained from Ningbo bright Yew plastification Co., Ltd, dinonyl terephthalate is obtained from Cibotanic Ribang plastics auxiliaries Co., Ltd, chlorinated paraffin, polyethylene wax is purchased from New materials, Inc. of Roland, Yangzhou, polyethylene oxide is purchased from Runfeng synthetic technology, Inc. of Jiangsu, nanometer calcium carbonate is purchased from far-end trade, Inc. of Zhongshan city, boron oxide is purchased from Shandonghao Shuihao chemical engineering, Inc., nanometer nickel powder is purchased from 28095The Cizhou Huanjiu's new materials technology, nanometer silicon dioxide is purchased from Hengge nanometer technology, Inc. of Nanjing Xuanhao, silane coupling agent and titanate coupling agent are purchased from Nanjing Xuanhao new materials technology, antimony trioxide is purchased from Shijiazhuang article Bai chemical technology, aluminum hydroxide is purchased from Jinnan Chengxing chemical engineering, nanometer silver particles are purchased from Guangzhou Hongwu materials technology, Inc., and metallocene polyethylene is purchased from Exxon Meifu.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade wire cable prepared by the preparation method are better than those of the example 1.
Example 7.
A B1-level wire cable preparation method is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano silver coating slurry contains resin powder A, a solvent, nano silver particles, a coupling agent A, boron oxide and nano silicon dioxide.
The raw materials of the fireproof sheath material comprise 1650 degree of polymerization resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 4.5 percent;
nano silver particles: 1.33 percent;
coupling agent A: 1.05 percent;
Boron oxide: 1.5 percent;
nano silicon dioxide: 2.5 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 48 parts of a binder;
dinonyl terephthalate: 12;
chlorinated paraffin: 6 parts of (1);
polyethylene wax: 0.25 part;
a coupling agent B: 2.6 parts;
nano calcium carbonate: 25 parts of (1);
flame retardant: 8 parts of a mixture;
nano silicon dioxide: 6 parts of (1);
boron oxide: 4 parts.
Wherein the coupling agent A is a silane coupling agent. The resin powder A is polyurethane or ethyl cellulose. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein the resin powder B is obtained from Ningbo weih Ye plastification Co., Ltd, dinonyl terephthalate is obtained from Toxico Ribang plastics auxiliaries Co., Ltd, chlorinated paraffin, polyethylene wax is purchased from New materials, Inc. of Roland, Yangzhou, polyethylene oxide is purchased from Runfeng synthetic technology, Inc. of Jiangsu, nanometer calcium carbonate is purchased from far-end trade, Inc. of Zhongshan city, boron oxide is purchased from Shandonghao Shuihao chemical engineering, Inc., nanometer nickel powder is purchased from 28095The Cizhou Huanjiu's new materials technology, nanometer silicon dioxide is purchased from Hengge nanometer technology, Inc. of Nanjing Xuanhao, silane coupling agent and titanate coupling agent are purchased from Nanjing Xuanhao new materials technology, antimony trioxide is purchased from Shijiazhuang article Bai chemical technology, aluminum hydroxide is purchased from Jinnan Chengxing chemical engineering, nanometer silver particles are purchased from Guangzhou Hongwu materials technology, Inc., and metallocene polyethylene is purchased from Exxon Meifu.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade cable prepared by the method are better than those of the example 1.
Example 8.
A B1-level wire cable preparation method is provided with a cable core, an insulating layer, a sheath layer and a nano silver coating, wherein the sheath layer is prepared from a fireproof sheath material, the insulating layer is coated on the outer surface of the cable core, the sheath layer is coated on the outer surface of the insulating layer, and the nano silver coating is coated on the sheath layer.
The coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
The nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
The raw materials of the fireproof sheath material comprise resin powder B with the polymerization degree of 1700, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
In the weight percentage of the nano silver coating slurry,
resin powder A: 3 percent;
nano silver particles: 0.7 percent;
coupling agent A: 00.8 percent;
Boron oxide: 1.6 percent;
nano silicon dioxide: 1.4 percent.
The fireproof sheath material comprises the following components in parts by weight,
resin powder B: 53 parts of a mixture;
dinonyl terephthalate: 17 parts of (1);
chlorinated paraffin: 6.4 parts of a mixture;
polyethylene wax: 0.14 part;
a coupling agent B: 1.7 parts;
nano calcium carbonate: 1.9 parts;
flame retardant: 5.4 parts;
nano silicon dioxide: 4.1 parts;
boron oxide: 4.3 parts.
Wherein the coupling agent A is a titanate coupling agent. The resin powder A is metallocene polyethylene. The coupling agent B is a titanate coupling agent. The flame retardant is antimony trioxide and aluminum hydroxide.
Wherein the ethyl cellulose, polyurethane and resin powder B are obtained from Ningbo weihui plastification Co., Ltd, dinonyl terephthalate is obtained from Cincho Rabang plastics additives Co., Ltd, chlorinated paraffin, polyethylene wax is purchased from New materials, Inc. of Roland, Yangzhou, polyethylene oxide is purchased from Runfeng synthetic technology, Inc. of Jiangsu, nanometer calcium carbonate is purchased from far-end trade, Inc. of Zhongshan city, boron oxide is purchased from Shandonghao Shuihao chemical engineering, Inc., nanometer nickel powder is purchased from 28095The Cizhou Huanjiu, nanometer silicon dioxide is purchased from Hengge nanometer technology, Inc. of Hangzhou, silane coupling agent and titanate coupling agent are purchased from Nanjing Xuanhao New materials, antimony trioxide is purchased from Shijiazhuang, Bai chemical technology, Inc., aluminum hydroxide is purchased from Jinnan Chengxing chemical, and nanometer silver particles are purchased from Guangzhou Hongwu materials technology, Inc.
Compared with the example 1, the flame retardant effect, the elasticity and the wear resistance of the B1 grade cable prepared by the method are better than those of the example 1.
Example 9.
A preparation method of a B1-grade wire cable adopts the raw material proportion of any one fireproof sheath material of embodiments 3 to 8, and the preparation method of the fireproof sheath material comprises the following steps:
firstly, placing resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax in a high-speed kneader, heating to 90-110 ℃, kneading and stirring for 8-15 min to obtain a mixture;
and step three, placing the mixture in a granulator, controlling the temperature to be 130-150 ℃, extruding and granulating, cutting and cooling to obtain the fireproof sheath material.
According to the B1-level wire cable obtained by the B1-level wire cable preparation method, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the sheath layer is surrounded by the carbon dioxide, and further combustion of the sheath layer is prevented, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Example 10.
A B1 level wire cable preparation method adopts the raw material proportion of any one fireproof sheath material of embodiments 3 to 8, and the preparation steps of the fireproof sheath material comprise:
firstly, placing resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax in a high-speed kneading machine, heating to 90 ℃, kneading and stirring for 8min to obtain a mixture;
and step three, placing the mixture in a granulator, controlling the temperature to be 130 ℃, performing extrusion granulation, cutting and cooling to obtain the fireproof sheath material.
According to the B1 level cable obtained by the B1 level cable preparation method, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the sheath layer is surrounded by the carbon dioxide, and further combustion of the sheath layer is prevented, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Example 11.
A preparation method of a B1-grade wire cable adopts the raw material proportion of any one fireproof sheath material of embodiments 3 to 8, and the preparation method of the fireproof sheath material comprises the following steps:
Firstly, placing resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax in a high-speed kneading machine, heating to 110 ℃, kneading and stirring for 15min to obtain a mixture;
and step three, placing the mixture in a granulator, controlling the temperature to be 150 ℃, extruding and granulating, cutting and cooling to obtain the fireproof sheath material.
According to the B1 level cable obtained by the B1 level cable preparation method, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the sheath layer is surrounded by the carbon dioxide, and further combustion of the sheath layer is prevented, so that a good flame retardant effect is achieved, and no harmful gas is generated.
Example 12.
A B1 level wire cable preparation method adopts the raw material proportion of any one fireproof sheath material of embodiments 3 to 8, and the preparation steps of the fireproof sheath material comprise:
firstly, putting resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax into a high-speed kneader, heating to 100 ℃, kneading and stirring for 9min to obtain a mixture;
And step three, placing the mixture in a granulator, controlling the temperature to 145 ℃, extruding and granulating, cutting and cooling to obtain the fireproof sheath material.
According to the B1-level wire cable obtained by the B1-level wire cable preparation method, the nano silver coating is coated on the sheath layer and serves as a catalyst, carbon monoxide generated during combustion of the sheath layer is catalyzed into carbon dioxide, the sheath layer is surrounded by the carbon dioxide, and further combustion of the sheath layer is prevented, so that a good flame retardant effect is achieved, and no harmful gas is generated.
The sheath material sample group of the preparation method of the B1-grade wire cable is prepared by the raw material proportioning of the embodiments 3-8 and the process of obtaining the fireproof sheath material of the embodiments 10-12.
Preparation method sample group of first-table and B1-grade wire cables
Sample set | Raw material ratio | Preparation method |
Sample 1 | Example 3 | Example 11 |
Sample 2 | Example 4 | Example 11 |
Sample 3 | Example 5 | Example 11 |
Sample No. 4 | Example 6 | Example 11 |
Sample No. 5 | Example 7 | Example 11 |
Sample No. 6 | Example 8 | Example 11 |
Sample 8 | Example 5 | Example 10 |
Sample 9 | Example 5 | Example 10 |
Sample 10 | Example 7 | Example 12 |
Under the same other experimental conditions, the performance test of the coated nano-silver coating sheath layer of the fireproof sheath material of the samples 1 to 11 is performed in table two, and the related performances are as follows:
TABLE II, relative detection performance of sheath layer prepared by corresponding sample
The second table shows that the sheath layer obtained by matching the resin powder B and other components of the sheath layer has good tensile strength and elongation, and the critical oxygen burning index of the B1-grade wire cable coated with the nano silver coating is above 30, so that the cable has good flame retardant effect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A preparation method of a B1-grade wire cable is characterized by comprising the following steps: the cable comprises a cable core, an insulating layer, a sheath layer and a nano-silver coating, wherein the sheath layer is prepared from a fireproof sheath material;
the coating method of the nano-silver coating is to spray pre-prepared nano-silver coating slurry on the outer surface of the sheath layer, and then dry the slurry to obtain the B1 grade wire cable.
2. The method for preparing B1 grade wire cable according to claim 1, wherein: the nano-silver coating slurry contains resin powder A, a solvent, nano-silver particles, a coupling agent A, boron oxide and nano-silicon dioxide.
3. The method for preparing B1 grade cable according to claim 2, wherein: the fireproof sheath material comprises the following raw materials of resin powder B with the polymerization degree of 1400-2000, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax.
4. The method for preparing B1 grade cable according to claim 3, wherein: in the weight percentage of the nano silver coating slurry,
resin powder A: 1% -6%;
nano silver particles: 0.01 to 2.0 percent;
coupling agent A: 0.2% -2.0%;
boron oxide: 0.5 to 3.0 percent;
nano silicon dioxide: 0.5 to 3.0 percent.
5. The method for preparing B1 grade cable according to claim 4, wherein: the fireproof sheath material comprises the following components in parts by weight,
resin powder B: 30-60 parts;
dinonyl terephthalate: 5-25 parts;
chlorinated paraffin: 2-10 parts;
polyethylene wax: 0.05 to 0.3 portion;
A coupling agent B: 1-4 parts;
nano calcium carbonate: 10-30 parts;
flame retardant: 2-12 parts;
nano silicon dioxide: 2-8 parts;
boron oxide: 2 to 8 portions.
6. The method for preparing B1 grade cable according to claim 5, wherein: in the weight percentage of the nano silver coating slurry,
resin powder A: 2% -4%;
nano silver particles: 0.05 percent to 1.0 percent;
coupling agent A: 0.5 to 1.0 percent;
boron oxide: 1.0 to 2.0 percent;
nano silicon dioxide: 1.0 to 2.0 percent.
7. The method for preparing B1 grade cable according to claim 6, wherein: the fireproof sheath material comprises the following components in parts by weight,
resin powder B: 40-55 parts;
dinonyl terephthalate: 10-20 parts;
chlorinated paraffin: 5-8 parts;
polyethylene wax: 0.1 to 0.2 portion;
a coupling agent B: 1.5-2 parts;
nano calcium carbonate: 15-20 parts of a stabilizer;
flame retardant: 3-6 parts;
nano silicon dioxide: 3-5 parts;
boron oxide: 3 to 5 portions.
8. The method for preparing B1 grade cable according to claim 7, wherein: the coupling agent A is a silane coupling agent or a titanate coupling agent;
the resin powder A is polyurethane, ethyl cellulose or metallocene polyethylene;
The coupling agent B is a titanate coupling agent;
the flame retardant is antimony trioxide and aluminum hydroxide.
9. The method for preparing B1 grade wire cable according to claim 8, wherein: the preparation method of the nano-silver coating slurry comprises the following steps:
step A, adding nano silver particles and a coupling agent A into a propylene glycol solution of resin powder A, and performing ultrasonic dispersion to obtain a mixed solution;
and step B, adding boron oxide and nano silicon dioxide into the mixed solution, and performing ultrasonic dispersion to obtain nano silver coating slurry.
10. The method for preparing a class B1 wire cable according to claim 9, wherein the preparation of the fireproof sheathing material includes the steps of:
firstly, placing resin powder B, dinonyl terephthalate, chlorinated paraffin, polyethylene oxide, a flame retardant, nano calcium carbonate, a coupling agent B, boron oxide, nano silicon dioxide and polyethylene wax in a high-speed kneader, heating to 90-110 ℃, kneading and stirring for 8-15 min to obtain a mixture;
and step three, placing the mixture into a granulator, controlling the temperature to be 130-150 ℃, performing extrusion granulation, cutting and cooling to obtain the fireproof sheath material.
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