CN112940331B - Flame-retardant Krah pipe and preparation method thereof - Google Patents
Flame-retardant Krah pipe and preparation method thereof Download PDFInfo
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- CN112940331B CN112940331B CN202110441077.2A CN202110441077A CN112940331B CN 112940331 B CN112940331 B CN 112940331B CN 202110441077 A CN202110441077 A CN 202110441077A CN 112940331 B CN112940331 B CN 112940331B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 55
- 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 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- 238000001125 extrusion Methods 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 25
- 239000007769 metal material Substances 0.000 claims description 21
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920001903 high density polyethylene Polymers 0.000 claims description 10
- 239000004700 high-density polyethylene Substances 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 9
- 235000013539 calcium stearate Nutrition 0.000 claims description 9
- 239000008116 calcium stearate Substances 0.000 claims description 9
- 239000006229 carbon black Substances 0.000 claims description 9
- 239000004595 color masterbatch Substances 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 239000012760 heat stabilizer Substances 0.000 claims description 2
- 239000012745 toughening agent Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 17
- 239000003292 glue Substances 0.000 description 14
- RWSXRVCMGQZWBV-WDSKDSINSA-N glutathione Chemical compound OC(=O)[C@@H](N)CCC(=O)N[C@@H](CS)C(=O)NCC(O)=O RWSXRVCMGQZWBV-WDSKDSINSA-N 0.000 description 14
- 238000002156 mixing Methods 0.000 description 14
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 7
- 108010024636 Glutathione Proteins 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 7
- 229960003180 glutathione Drugs 0.000 description 7
- 150000002576 ketones Chemical class 0.000 description 7
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 229920001955 polyphenylene ether Polymers 0.000 description 7
- 239000010453 quartz Substances 0.000 description 7
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- AQPHBYQUCKHJLT-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-(2,3,4,5,6-pentabromophenyl)benzene Chemical group BrC1=C(Br)C(Br)=C(Br)C(Br)=C1C1=C(Br)C(Br)=C(Br)C(Br)=C1Br AQPHBYQUCKHJLT-UHFFFAOYSA-N 0.000 description 1
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/05—Forming flame retardant coatings or fire resistant coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a flame-retardant Krah pipe and a preparation method thereof, belonging to the field of Krah pipes. According to the flame-retardant Krah pipe, the flame-retardant layer is arranged on the surface of the flame-retardant Krah pipe and consists of the thermal deformation particles and the flame retardant, when the temperature of the Krah pipe rises, the thermal deformation particles are sensitive to the temperature, the particles deform and shrink, the flame retardant is more tightly stacked, the stacking density is increased, the probability of isolating oxygen-insulated reaction among three burning elements is increased, and therefore the flame-retardant performance of the Krah pipe can be well improved.
Description
Technical Field
The invention relates to a Clar pipe, in particular to a flame-retardant Clar pipe and a preparation method thereof.
Background
The carat pipe is a high-density polyethylene structure wall winding pipe, is generally applicable to buried sewage pipes, has the advantages of long service life, stable and reliable quality, convenient connection, good tightness and the like, but in special conditions, meets the environment with higher temperature, and the flame retardant property needs to be improved.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art and provides a flame-retardant Krah pipe and a preparation method thereof.
The technical solution of the invention is as follows:
the utility model provides a fire-retardant carat pipe, includes the body and locates the fire-retardant layer on body surface, and fire-retardant layer includes following raw materials: a flame retardant and thermally deformable particles dispersed between the flame retardant.
Preferably, the flame retardant comprises at least one of aluminum hydroxide, magnesium hydroxide, quartz powder, aluminum oxide, zinc borate, decabromodiphenyl, ammonium polyphosphate, hydrotalcite and antimony trioxide.
Preferably, the thermally deformable particles comprise heat shrinkable particles or memory metal materials.
The invention also discloses a preparation method of the flame-retardant Krah pipe, which comprises the following steps: preparing a pipe body, and then adhering a layer of flame retardant mixed with thermal deformation particles on the pipe body to prepare the flame-retardant Krah pipe.
Preferably, the thermally deformable particles are prepared by processing the memory metal material in an accordion shape into a fiber shape at a low temperature.
Preferably, the memory metal material is nickel-titanium alloy, and the low temperature is 10-40 ℃.
Preferably, the preparation method of the pipe body comprises the following steps: the preparation method of the pipe body comprises the step of carrying out melt extrusion molding on the raw materials with the water content of less than or equal to 1% in an extruder.
Preferably, the feedstock comprises HDPE resin: 60-68 parts of nano calcium carbonate: 14-23 parts of calcium stearate: 12-16 parts of color master batch: 8-12 parts of silicon dioxide: 3-8 parts of glass fiber powder: 5-10 parts of a toughening agent: 6-9 parts of white carbon black: 1-5 parts of a silane coupling agent: 1-5 parts of nitrile rubber: 5-10 parts of dispersant: 1-3 parts of antioxidant: 3-5 parts of a heat stabilizer: 1-5 parts.
The invention has at least one of the following beneficial effects:
(1) according to the flame-retardant Krah pipe, the flame-retardant layer is arranged on the surface of the flame-retardant Krah pipe and consists of the thermal deformation particles and the flame retardant, when the temperature of the Krah pipe rises, the thermal deformation particles are sensitive to the temperature, the particles deform and shrink, the flame retardant is more tightly stacked, the stacking density is increased, the probability of isolating oxygen-insulated reaction among three burning elements is increased, and therefore the flame-retardant performance of the Krah pipe can be well improved.
(2) According to the preparation method of the flame-retardant carat pipe, the folded memory metal material is processed into a fiber shape at a low temperature, the tensile strength of the carat pipe can be increased by the fiber memory metal material at a normal temperature, the fiber metal is restored to the shape before being processed under the condition of temperature rise, and the stacking density of a flame retardant is greatly increased by the superelasticity restoring acting force of the material, so that the flame-retardant performance is greatly improved.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
Calculated according to the parts by weight: HDPE resin: 60 parts of nano calcium carbonate: 14 parts of calcium stearate: 12 parts of color master batch: 8 parts of silicon dioxide: 3 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 2 parts of vinyltriethoxysilane: 3 parts of nitrile rubber: 6 parts of glyceryl tristearate: 2 parts of glutathione: 3 parts of dibasic lead phosphite: and 2 parts of the raw materials.
Mixing the raw materials for 1h at 79 ℃; and drying the materials after mixing until the water content is 1%, continuously putting the dried raw materials into an extruder for melt extrusion molding until the raw materials are the Krah pipe with a preset shape, wherein the extrusion temperature is 230 ℃, the extrusion pressure is 9MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 1.5 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to the mass ratio of 6: 100) on the pipe body, wherein the organic glue is mixed with a mixture with the mass percentage of 5%, and the mixture comprises the following components in mass ratio of 1: 3 and a flame retardant, the preparation method of the thermally deformable particle being: processing the folded memory metal material into fibers at 10 ℃, wherein the flame retardant is quartz powder, and the memory metal material is nickel-titanium alloy.
Example 2
Calculated according to the parts by weight: HDPE resin: 65 parts of nano calcium carbonate: 17 parts of calcium stearate: 13 parts of color master batch: 9 parts of silicon dioxide: 4 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 5 parts of vinyl triethoxysilane: 3 parts of nitrile rubber: 6 parts of glycerol tristearate: 2 parts of glutathione: 4 parts of dibasic lead phosphite: 5 parts of the raw materials.
Mixing the raw materials for 1h at 90 ℃; and drying the materials after mixing, wherein the water content of the dried materials is 0.5%, continuously putting the dried materials into an extruder, and performing melt extrusion molding to obtain a Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 8MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 2 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to the mass ratio of 6: 100) on the pipe body, wherein the organic glue is mixed with a mixture with the mass percentage of 10%, and the mixture comprises the following components in mass ratio of 1: 3 and a flame retardant, the preparation method of the thermally deformable particles being: processing the folded memory metal material into a fiber shape at 10 ℃, wherein the flame retardant is quartz powder, and the memory metal material is nickel-titanium alloy.
Example 3
Calculated according to the parts by weight: HDPE resin: 68 parts of nano calcium carbonate: 19 parts of calcium stearate: 16 parts of color master batch: 11 parts of silicon dioxide: 3 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 2 parts of vinyltriethoxysilane: 1 part of nitrile rubber: 5 parts of glyceryl tristearate: 3 parts of glutathione: 3 parts of dibasic lead phosphite: 1 part.
Mixing the raw materials for 1h at 80 ℃; and drying the materials after mixing, wherein the water content of the dried materials is 1%, continuously putting the dried raw materials into an extruder, and performing melt extrusion molding to obtain a Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 12MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 4 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to a mass ratio of 6: 100) on a pipe body, wherein the organic glue is mixed with a mixture with a mass percentage of 10%, and the mixture comprises the following components in a mass ratio of 1: 3 and a flame retardant, the preparation method of the thermally deformable particles being: processing the folded memory metal material into a fiber shape at 10 ℃, wherein the flame retardant is quartz powder, and the memory metal material is nickel-titanium alloy.
Example 4
Calculated according to the parts by weight: HDPE resin: 60 parts of nano calcium carbonate: 14 parts of calcium stearate: 12 parts of color master batch: 8 parts of silicon dioxide: 3 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 1-5 parts of vinyl triethoxysilane: 1-5 parts of nitrile rubber: 10 parts of glyceryl tristearate: 3 parts of glutathione: 5 parts of dibasic lead phosphite: 5 parts of the raw materials.
Mixing the raw materials for 1h at 90 ℃; and drying the materials after mixing, drying the materials until the water content temperature is 0.8%, continuously putting the dried raw materials into an extruder, and performing melt extrusion molding to obtain a Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 12MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 4 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to a mass ratio of 6: 100) on a pipe body, wherein the organic glue is mixed with a mixture with a mass percentage of 15%, and the mixture comprises the following components in a mass ratio of 1: 3 and a flame retardant, the preparation method of the thermally deformable particles being: processing the folded memory metal material into fibers at 10 ℃, wherein the flame retardant is quartz powder, and the memory metal material is nickel-titanium alloy.
Example 5
The weight portion is as follows: HDPE resin: 60 parts of nano calcium carbonate: 14 parts of calcium stearate: 12 parts of color master batch: 8 parts of silicon dioxide: 3 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 5 parts of vinyl triethoxysilane: 5 parts of nitrile rubber: 10 parts of glyceryl tristearate: 3 parts of glutathione: 5 parts of dibasic lead phosphite: 4 parts of the raw materials.
Mixing the raw materials for 1h at 65-90 deg.C; and drying the materials after mixing, wherein the water content of the dried materials is 0.7%, continuously putting the dried materials into an extruder, and performing melt extrusion molding to obtain a Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 12MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 4 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to the mass ratio of 6: 100) on the pipe body, wherein the organic glue is mixed with a mixture with the mass percentage of 18%, and the mixture comprises the following components in mass ratio of 1: 5 and a flame retardant, the preparation method of the thermally deformable particles being: processing the folded memory metal material into fibers at 10 ℃, wherein the flame retardant is antimony trioxide, and the memory metal material is nickel-titanium alloy.
Example 6
This example is a modification of example 5, and specifically, the thermally deformable particles are polypropylene heat shrinkable thin particles.
Comparative example 1 (No Heat distortion granule)
Calculated according to the parts by weight: HDPE resin: 68 parts of nano calcium carbonate: 19 parts, calcium stearate: 16 parts of color master batch: 11 parts of silicon dioxide: 3 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 2 parts of vinyltriethoxysilane: 1 part of nitrile rubber: 5 parts of glyceryl tristearate: 3 parts of glutathione: 3 parts of dibasic lead phosphite: 1 part.
Mixing the raw materials for 1h at 80 ℃; and drying the materials after mixing until the water content is 1%, continuously putting the dried raw materials into an extruder for melt extrusion molding until the raw materials are the Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 12MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 4 m/min.
The method comprises the following steps of coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to the mass ratio of 6: 100) on a pipe body, wherein a flame retardant accounting for 10 wt% is mixed in the organic glue, and the flame retardant is quartz powder.
Comparative example 2 (Water content greater than 1%)
Calculated according to the parts by weight: HDPE resin: 65 parts of nano calcium carbonate: 17 parts, calcium stearate: 13 parts of color master batch: 9 parts of silicon dioxide: 4 parts of glass fiber powder: 5 parts of polyphenylene ether ketone: 6 parts of white carbon black: 5 parts of vinyl triethoxysilane: 3 parts of nitrile rubber: 6 parts of glyceryl tristearate: 2 parts of glutathione: 4 parts of dibasic lead phosphite: 5 parts of the raw materials.
Mixing the raw materials for 1h at 90 ℃; and drying the materials after mixing, wherein the water content of the dried materials is 6%, continuously putting the dried raw materials into an extruder, and performing melt extrusion molding to obtain a Krah pipe with a preset shape, wherein the extrusion temperature is 240 ℃, the extrusion pressure is 8MPa, the extrusion vacuum degree is-0.04 MPa, and the traction speed of the extruded pipe is 2 m/min.
Coating a layer of organic glue (prepared from epoxy resin and ethylenediamine according to the mass ratio of 6: 100) on the pipe body, wherein the organic glue is mixed with a mixture with the mass percentage of 8%, and the mixture comprises the following components in mass ratio of 1: 3, the preparation method of the thermally deformable particles comprises: processing the folded memory metal material into fibers at 10 ℃, wherein the flame retardant is quartz powder, and the memory metal material is nickel-titanium alloy.
The above examples and comparative examples were subjected to performance tests, and the test results are shown in Table 1.
Flame retardant property: reference is made to UL-94.
Tensile strength: and testing by adopting a tensile strength tester.
TABLE 1 Performance test values of examples and comparative examples
| Test specimen | Tensile strength (Mpa) | Limiting Oxygen Index (LOI) | Flame retardant property (UL-94) |
| Example 1 | 46 | 31.2 | V-0 |
| Example 2 | 47 | 31.5 | V-0 |
| Example 3 | 48 | 31.6 | V-0 |
| Example 4 | 45 | 31.3 | V-0 |
| Example 5 | 46 | 31.4 | V-0 |
| Example 6 | 41 | 31.1 | V-0 |
| Comparative example 1 | 35 | 22.4 | V-1 |
| Comparative example 2 | 29 | 21.3 | V-1 |
It can be seen from the above table that the flame retardant performance and tensile strength of the examples are superior to those of the examples, and it can be seen from the comparative analysis of comparative example 1 that the flame retardant in the examples is mixed with the thermal deformation particle material, the folded memory metal material is processed into a fiber shape at a low temperature, the fiber memory metal material can increase the tensile strength of the carat pipe at a normal temperature, and when the temperature is increased, the fiber metal is restored to the shape before being processed, the stacking density of the flame retardant is greatly increased by the superelasticity restoring force of the material, so that the flame retardant performance is greatly improved, and the shrinkage force of the heated polypropylene thermal shrinkage film adopted in the examples is used for more tightly stacking the flame retardant particles, so that the flame retardant performance is greatly improved. It is understood from the analysis of comparative example 2 that, since the moisture content of the raw material is higher than that of the example, it is likely that water vapor is easily mixed into the raw material due to the evaporation of the moisture during the preparation of the pipe body, resulting in the occurrence of bubbles and peeling, thereby affecting the performance of the krah pipe.
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
In the description of the embodiments of the present invention, it should be understood that "-" and "-" indicate the same range of two numerical values, and the range includes the endpoints. For example: "A-B" means a range of greater than or equal to A and less than or equal to B. "A to B" means a range of not less than A and not more than B.
In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The above description is only a preferred embodiment of the present invention, and all technical solutions that can achieve the object of the present invention by substantially the same means are within the protection scope of the present invention.
Claims (3)
1. The preparation method of the flame-retardant Krah pipe is characterized by comprising the following steps: preparing a pipe body, and then adhering a layer of flame retardant mixed with thermal deformation fibers on the pipe body to prepare a flame-retardant Krah pipe; the preparation method of the thermal deformation fiber comprises the steps of processing the folded memory metal material into a fiber shape at a low temperature; the memory metal material is nickel-titanium alloy; the low temperature is 10-40 ℃.
2. The method as claimed in claim 1, wherein the method for preparing the flame retardant krah pipe comprises: the preparation method of the pipe body comprises the step of carrying out melt extrusion molding on the raw materials with the water content of less than or equal to 1% in an extruder.
3. The method as claimed in claim 2, wherein the raw material comprises HDPE resin: 60-68 parts of nano calcium carbonate: 14-23 parts of calcium stearate: 12-16 parts of color master batch: 8-12 parts of silicon dioxide: 3-8 parts of glass fiber powder: 5-10 parts of a toughening agent: 6-9 parts of white carbon black: 1-5 parts of a silane coupling agent: 1-5 parts of nitrile rubber: 5-10 parts of a dispersant: 1-3 parts of antioxidant: 3-5 parts of a heat stabilizer: 1-5 parts.
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