CN116278283A - Communication is with fire-retardant silicon core bundling pipe - Google Patents
Communication is with fire-retardant silicon core bundling pipe Download PDFInfo
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- CN116278283A CN116278283A CN202310367510.1A CN202310367510A CN116278283A CN 116278283 A CN116278283 A CN 116278283A CN 202310367510 A CN202310367510 A CN 202310367510A CN 116278283 A CN116278283 A CN 116278283A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000003063 flame retardant Substances 0.000 title claims abstract description 73
- 238000004891 communication Methods 0.000 title claims abstract description 19
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 25
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 12
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 12
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 5
- 229920002472 Starch Polymers 0.000 claims description 36
- 239000008107 starch Substances 0.000 claims description 36
- 235000019698 starch Nutrition 0.000 claims description 36
- 239000002131 composite material Substances 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000004005 microsphere Substances 0.000 claims description 27
- CBTAIOOTRCAMBD-UHFFFAOYSA-N 2-ethoxy-2,4,4,6,6-pentafluoro-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound CCOP1(F)=NP(F)(F)=NP(F)(F)=N1 CBTAIOOTRCAMBD-UHFFFAOYSA-N 0.000 claims description 21
- 229920001690 polydopamine Polymers 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 238000013329 compounding Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 8
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 8
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- NJSVDVPGINTNGX-UHFFFAOYSA-N [dimethoxy(propyl)silyl]oxymethanamine Chemical compound CCC[Si](OC)(OC)OCN NJSVDVPGINTNGX-UHFFFAOYSA-N 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 6
- 238000000034 method Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 25
- 239000010410 layer Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000377 silicon dioxide Substances 0.000 description 11
- 235000012239 silicon dioxide Nutrition 0.000 description 11
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 on one hand 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
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the technical field of silicon core tubes, and provides a communication flame-retardant silicon core bundling tube which is of a double-layer tube structure and comprises an outer layer and an inner layer, and is characterized in that the outer layer comprises the following raw materials in parts by weight: 85-105 parts of high-density polyethylene, 5-10 parts of ethylene-vinyl acetate copolymer, 8-12 parts of flame retardant, 8-13 parts of compatilizer, 5-10 parts of lubricant, 5-10 parts of plasticizer, 2-3 parts of carbon black and 1-2 parts of antioxidant; the inner layer comprises the following raw materials in parts by weight: 3-5 parts of silicon core master batch, 60-70 parts of high-density polyethylene and 0.5-1 part of flame retardant. By the technical scheme, the problems of poor flame retardance and poor mechanical property of the silicon core tube in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of silicon core tubes, in particular to a flame-retardant silicon core bundling tube for communication.
Background
The silicon core tube is a novel composite pipeline with a silica gel solid lubricant on the inner wall, has good sealing performance, chemical corrosion resistance and low engineering cost, and is widely applied to optical cable communication network systems of highways, railways and the like. According to the structural division, the silicon core pipe is divided into two main types of smooth solid-wall silicon core pipe with smooth inner wall and smooth outer wall and ribbed silicon core pipe with longitudinal ribs on the inner wall or the outer wall. The HDPE silicon core pipe is a novel composite pipeline with a silica gel solid lubricant on the inner wall, and is called as a silicon pipe for short. The three plastic extruders synchronously extrude and compound, the main raw material is high-density polyethylene, the core layer is solid lubricant silica gel with the lowest friction coefficient, and the three plastic extruders are widely applied to optical cable communication network systems.
In recent years, electrical fire accidents caused by cable problems frequently occur, so that the silicon core tube needs to have flame retardant performance, otherwise, when an internal cable is short-circuited, a combustion phenomenon is easily caused, and the use safety is affected. At present, in order to improve the flame retardant property of the silicon core tube, a large amount of flame retardant is added into the raw materials, for example, the application number 02112744.1 discloses a special halogen-free flame retardant silicon core tube material, wherein the proportion of the flame retardant is 25-45%, and the flame retardant has the problem of poor mechanical property of a flame retardant silicon core tube finished product due to high content of the flame retardant. Therefore, there is an urgent need to develop a silicon core tube having both good flame retardancy and excellent mechanical properties.
Disclosure of Invention
The invention provides a flame-retardant silicon core bundling pipe for communication, which solves the problems of poor flame retardance and poor mechanical property of a silicon core pipe in the related art.
The technical scheme of the invention is as follows:
the utility model provides a communication is with fire-retardant silicon core bundling pipe, is bilayer tube structure, includes skin and inlayer, the skin includes the raw materials of following parts by weight: 85-105 parts of high-density polyethylene, 5-10 parts of ethylene-vinyl acetate copolymer, 8-12 parts of flame retardant, 8-13 parts of compatilizer, 5-10 parts of lubricant, 5-10 parts of plasticizer, 2-3 parts of carbon black and 1-2 parts of antioxidant; the inner layer comprises the following raw materials in parts by weight: 3-5 parts of silicon core master batch, 60-70 parts of high-density polyethylene and 0.5-1 part of flame retardant.
As a further technical scheme, the flame retardant consists of starch/SiO with the mass ratio of 1 (10-15) 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene.
As a further technical scheme, the starch/SiO 2 The preparation method of the composite microsphere comprises the following steps: dissolving starch in water to prepare starch solution of 0.01g/mL, adding absolute ethyl alcohol and APTMS, stirring for 3h,centrifuging, collecting precipitate, washing the precipitate with ethanol, and oven drying to obtain starch/SiO 2 Composite microspheres.
As a further technical scheme, the volume ratio of the starch solution, the absolute ethyl alcohol and the APTMS is 1:3:0.04.
As a further technical scheme, the compatilizer consists of polydopamine and HDPE-g-MAH.
As a further technical scheme, the mass ratio of the polydopamine to the HDPE-g-MAH is 1 (8-10).
As a further technical scheme, the lubricant comprises one or more of PE wax, silicone oil and stearate.
As a further technical scheme, the plasticizer comprises one of dioctyl phthalate, dibutyl phthalate and dioctyl sebacate.
As a further technical scheme, the antioxidant comprises one of an antioxidant 1010, an antioxidant 626 and an antioxidant 246.
The invention also provides a preparation method of the flame-retardant silicon core bundling tube for communication, which comprises the following steps:
s1, taking all the raw materials of the outer layer, heating to 125-130 ℃, uniformly mixing, and cooling for later use;
s2, taking all raw materials of the inner layer, heating to 110-120 ℃, uniformly mixing, and cooling for later use;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding by two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
The working principle and the beneficial effects of the invention are as follows:
1. the invention adopts high-density polyethylene and ethylene-vinyl acetate copolymer as outer layer raw materials, starch/SiO 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are used as flame retardants, and the polydopamine and the HDPE-g-MAH are used as compatilizers, so that the silicon core tube with excellent flame retardant property and mechanical property is prepared.
2. starch/Si in the present inventionO 2 The composite microsphere and the ethoxy (pentafluoro) cyclotriphosphazene are mixed to be used as a flame retardant, on one hand, starch is used as a carbon source in a flame retardant system, silicon dioxide can reduce the heat release speed and the heat release amount of a base material in the heating process, so that the purpose of improving the oxygen index is achieved, and on the other hand, the ethoxy (pentafluoro) cyclotriphosphazene is used as a phosphorus source and a nitrogen source of the flame retardant, and is used with starch/SiO (silicon dioxide) 2 The composite microspheres are used in a mixed mode, the oxygen index of the silicon core tube can be greatly improved, and therefore the flame retardant property of the silicon core tube is improved, and the silicon core tube still has high flame retardant property and high mechanical property under the condition that the addition amount of the flame retardant is small.
3. According to the invention, polydopamine and HDPE-g-MAH are used as the compatilizer of the system, and the polydopamine and HDPE-g-MAH are synergistic, so that the compatibility among components in the system is enhanced, and the tensile strength and elongation at break of the pipe are improved, thereby improving the mechanical property of the silicon core pipe.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The starch/SiO of the examples and comparative examples below 2 The composite microsphere is prepared by the following steps: dissolving 0.1g of starch in 10mL of water at 100 ℃ to prepare 0.01g/mL of starch solution, cooling to room temperature, adding 30mL of absolute ethyl alcohol and 0.4mL of APTMS while stirring, continuously stirring for 3h, centrifuging, collecting precipitate, washing the precipitate with ethanol for 1 time, and drying to obtain starch/SiO 2 Composite microspheres.
Example 1
S1, heating 90 parts of high-density polyethylene, 5 parts of ethylene-vinyl acetate copolymer, 9 parts of flame retardant, 10 parts of compatilizer, 8 parts of PE wax, 5 parts of dibutyl phthalate, 3 parts of carbon black and 1010 2 parts of antioxidant to 125 DEG CStirring for 90min, uniformly mixing, cooling for standby, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:13 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:8;
s2, taking 3 parts of silicon core master batch, 65 parts of high-density polyethylene and 0.5 part of flame retardant, heating to 110 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:13 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 2
S1, taking 100 parts of high-density polyethylene, 8 parts of ethylene-vinyl acetate copolymer, 10 parts of flame retardant, 13 parts of compatilizer, 5 parts of barium stearate, 8 parts of dioctyl sebacate, 3 parts of carbon black and 626 parts of antioxidant, heating to 130 ℃, stirring for 90min, uniformly mixing, and cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:10 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:9;
s2, taking 4 parts of silicon core master batch, 60 parts of high-density polyethylene and 0.5 part of flame retardant, heating to 115 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:10 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 3
S1, taking 85 parts of high-density polyethylene, 8 parts of ethylene-vinyl acetate copolymer, 8 parts of flame retardant, 12 parts of compatilizer,10 parts of barium stearate, 8 parts of dioctyl phthalate, 2 parts of carbon black and 626 parts of antioxidant, heating to 130 ℃, stirring for 90min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:15 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:10;
s2, taking 5 parts of silicon core master batch, 70 parts of high-density polyethylene and 1 part of flame retardant, heating to 120 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:15 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 4
S1, 105 parts of high-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 12 parts of flame retardant, 8 parts of compatilizer, 10 parts of silicone oil, 10 parts of dioctyl phthalate, 2 parts of carbon black and 246 parts of antioxidant are taken, heated to 130 ℃, stirred for 90min, uniformly mixed, cooled and reserved, wherein the flame retardant consists of starch/SiO with the mass ratio of 1:15 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:8;
s2, taking 5 parts of silicon core master batch, 60 parts of high-density polyethylene and 0.5 part of flame retardant, heating to 120 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:15 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 5
S1, taking 85 parts of high-density polyethylene, 8 parts of ethylene-vinyl acetate copolymer and starch/SiO 2 8 parts of composite microspheres, 12 parts of compatilizer, 10 parts of barium stearate, 8 parts of dioctyl phthalate, 2 parts of carbon black and 626 parts of antioxidant, heating to 130 ℃, stirring for 90min, uniformly mixing, and cooling for later use, wherein the compatilizer consists of polydopamine and HDPE-g-MAH in a mass ratio of 1:10;
s2, taking 5 parts of silicon core master batch, 70 parts of high-density polyethylene and starch/SiO 2 1 part of composite microsphere, heating to 120 ℃, stirring for 60min, uniformly mixing, and cooling for standby;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 6
S1, heating 85 parts of high-density polyethylene, 8 parts of ethylene-vinyl acetate copolymer, 8 parts of ethoxy (pentafluoro) cyclotriphosphazene, 12 parts of compatilizer, 10 parts of barium stearate, 8 parts of dioctyl phthalate, 2 parts of carbon black and 626 parts of antioxidant to 130 ℃, stirring for 90min, uniformly mixing, and cooling for later use, wherein the compatilizer consists of polydopamine and HDPE-g-MAH with the mass ratio of 1:10;
s2, taking 5 parts of silicon core master batch, 70 parts of high-density polyethylene and 1 part of ethoxy (pentafluoro) cyclotriphosphazene, heating to 120 ℃, stirring for 60min, uniformly mixing, and cooling for later use;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 7
S1, 105 parts of high-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 12 parts of flame retardant, 8 parts of compatilizer, 10 parts of silicone oil, 10 parts of dioctyl phthalate, 2 parts of carbon black and 246 parts of antioxidant are taken, heated to 130 ℃, stirred for 90min, mixed uniformly, cooled for standbyThe flame retardant consists of starch/SiO with the mass ratio of 1:15 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:7;
s2, taking 5 parts of silicon core master batch, 60 parts of high-density polyethylene and 0.5 part of flame retardant, heating to 120 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:15 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Example 8
S1, 105 parts of high-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 12 parts of flame retardant, 8 parts of compatilizer, 10 parts of silicone oil, 10 parts of dioctyl phthalate, 2 parts of carbon black and 246 parts of antioxidant are taken, heated to 130 ℃, stirred for 90min, uniformly mixed, cooled and reserved, wherein the flame retardant consists of starch/SiO with the mass ratio of 1:15 2 The composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene are composed, and the compatilizer is composed of polydopamine and HDPE-g-MAH with the mass ratio of 1:11;
s2, taking 5 parts of silicon core master batch, 60 parts of high-density polyethylene and 0.5 part of flame retardant, heating to 120 ℃, stirring for 60min, uniformly mixing, cooling for later use, wherein the flame retardant consists of starch/SiO (silicon dioxide) with the mass ratio of 1:15 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding at 180 ℃ through two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Comparative example 1
The only difference from example 3 is that no flame retardant was added.
Comparative example 2
The only difference from example 3 is that no compatibilizing agent was added.
Comparative example 3
The only difference from example 3 is that the compatibilizer is polydopamine.
Comparative example 4
The only difference from example 3 is that the compatibilizer is HDPE-g-MAH.
Performance test: the silicon core bundling tubes obtained in examples 1 to 8 and comparative examples 1 to 4 were tested for tensile yield strength and elongation at break according to GB/T8804.1-2003 standard and for oxygen index according to GB/T2406.2-2009 standard, and the test results are shown in Table 1.
TABLE 1 mechanical Properties and flame retardant Properties of silicon core bundling tube
As can be seen from Table 1, the silicon core bundling tubes obtained in examples 1-8 of the present invention have excellent mechanical properties and flame retardance. Since examples 5 to 6 use a single component flame retardant, the prepared silicon core bundling tube has inferior flame retardant properties to examples 1 to 4, and thus, when starch/SiO 2 When the composite microsphere and the ethoxy (pentafluoro) cyclotriphosphazene are mixed for use, the flame retardant effect is best, and the obtained silicon core bundling tube has the best flame retardant property. The mass ratio of polydopamine to HDPE-g-MAH in the compatilizer in examples 7-8 is beyond the range of 1 (8-10), and the mechanical property of the obtained silicon core bundling tube is lower than that in examples 1-4, so that the mechanical property of the silicon core bundling tube is the best only when the mass ratio of polydopamine to HDPE-g-MAH is 1 (8-10).
Comparative example 1, in which the flame retardancy of the silicon core bundling tube was greatly reduced due to the absence of the flame retardant, was compared with the test data of examples 3 and 5 to 6, and found that starch/SiO 2 The composite microsphere and the ethoxy (pentafluoro) cyclotriphosphazene are mixed for use, so that the synergistic effect is achieved, and the flame retardant property of the pipe is greatly improved.
The compatilizer of comparative example 2 is not added, the compatilizer of comparative example 3 is polydopamine, the compatilizer of comparative example 4 is HDPE-g-MAH, the mechanical properties of the prepared silicon core bundling tube are not the same as those of the examples, and after the mechanical properties of the tubes of comparative examples 2-4 are compared with those of example 4, the polydopamine and the HDPE-g-MAH are found to be used as the compatilizer of the system, and a synergistic effect exists between the polydopamine and the HDPE-g-MAH, so that the mechanical properties of the tubes are improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a communication is with fire-retardant silicon core bundling pipe, is bilayer tube structure, includes skin and inlayer, its characterized in that, the skin includes the raw materials of following parts by weight: 85-105 parts of high-density polyethylene, 5-10 parts of ethylene-vinyl acetate copolymer, 8-12 parts of flame retardant, 8-13 parts of compatilizer, 5-10 parts of lubricant, 5-10 parts of plasticizer, 2-3 parts of carbon black and 1-2 parts of antioxidant; the inner layer comprises the following raw materials in parts by weight: 3-5 parts of silicon core master batch, 60-70 parts of high-density polyethylene and 0.5-1 part of flame retardant.
2. The communication flame-retardant silicon core bundling tube according to claim 1, wherein the flame retardant comprises starch/SiO with a mass ratio of 1 (10-15) 2 Composite microsphere and ethoxy (pentafluoro) cyclotriphosphazene.
3. The communication flame-retardant silicone core bundling tube according to claim 2, wherein the starch/SiO 2 The preparation method of the composite microsphere comprises the following steps: dissolving starch in water to obtain starch solution of 0.01g/mL, adding absolute ethanol and APTMS, stirring for 3 hr, centrifuging, collecting precipitate, washing the precipitate with ethanol, and oven drying to obtain starch/SiO 2 Composite microspheres.
4. The communication flame-retardant silicone core bundling tube according to claim 3, wherein the volume ratio of starch solution, absolute ethanol and APTMS is 1:3:0.04.
5. The communication flame retardant silicone bundling tube according to claim 1, wherein said compatilizer is composed of polydopamine and HDPE-g-MAH.
6. The flame-retardant silicon core bundling tube for communication according to claim 5, wherein the mass ratio of polydopamine to HDPE-g-MAH is 1 (8-10).
7. The communication flame-retardant silicone bundling tube according to claim 1, wherein said lubricant comprises one or more of PE wax, silicone oil, stearate.
8. The flame-retardant silicone core bundling tube for communication according to claim 1, wherein said plasticizer comprises one of dioctyl phthalate, dibutyl phthalate, dioctyl sebacate.
9. The communication flame-retardant silicone bundling tube according to claim 1, wherein said antioxidant comprises one of antioxidant 1010, antioxidant 626, antioxidant 246.
10. The method for preparing the flame-retardant silicon core bundling tube for communication according to claim 1, comprising the following steps:
s1, taking all the raw materials of the outer layer, heating to 125-130 ℃, uniformly mixing, and cooling for later use;
s2, taking all raw materials of the inner layer, heating to 110-120 ℃, uniformly mixing, and cooling for later use;
s3, respectively heating and melting the outer layer raw material and the inner layer raw material, and synchronously extruding and compounding by two extruders to obtain a silicon core tube blank;
s4, carrying out vacuum shaping, cooling, traction, coiling and combination on the silicon core tube blank to obtain the silicon core bundling tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310367510.1A CN116278283A (en) | 2023-04-07 | 2023-04-07 | Communication is with fire-retardant silicon core bundling pipe |
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| CN202310367510.1A CN116278283A (en) | 2023-04-07 | 2023-04-07 | Communication is with fire-retardant silicon core bundling pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117103791A (en) * | 2023-08-28 | 2023-11-24 | 任丘市凯华通讯电力器材有限公司 | Environment-friendly high-molecular silicon core tube and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117103791A (en) * | 2023-08-28 | 2023-11-24 | 任丘市凯华通讯电力器材有限公司 | Environment-friendly high-molecular silicon core tube and preparation method thereof |
| CN117103791B (en) * | 2023-08-28 | 2024-02-06 | 任丘市凯华通讯电力器材有限公司 | Environment-friendly high-molecular silicon core tube and preparation method thereof |
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