CN112080135A - High-flexibility anti-aging nylon heat insulation strip and manufacturing method thereof - Google Patents
High-flexibility anti-aging nylon heat insulation strip and manufacturing method thereof Download PDFInfo
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- 239000004677 Nylon Substances 0.000 title claims abstract description 160
- 229920001778 nylon Polymers 0.000 title claims abstract description 160
- 238000009413 insulation Methods 0.000 title claims abstract description 30
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 46
- 239000004917 carbon fiber Substances 0.000 claims abstract description 46
- 239000000835 fiber Substances 0.000 claims abstract description 41
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 239000010426 asphalt Substances 0.000 claims abstract description 38
- 239000004743 Polypropylene Substances 0.000 claims abstract description 28
- -1 polypropylene Polymers 0.000 claims abstract description 28
- 229920001155 polypropylene Polymers 0.000 claims abstract description 28
- 239000011256 inorganic filler Substances 0.000 claims abstract description 21
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 21
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 20
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 18
- 239000004626 polylactic acid Substances 0.000 claims abstract description 18
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 230000032683 aging Effects 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims description 28
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 24
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 23
- 238000002791 soaking Methods 0.000 claims description 23
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 17
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 239000006229 carbon black Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 15
- 239000004611 light stabiliser Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 15
- 239000012286 potassium permanganate Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 12
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 12
- 239000004609 Impact Modifier Substances 0.000 claims description 10
- 239000002657 fibrous material Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 9
- 238000004381 surface treatment Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002074 melt spinning Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000000379 polymerizing effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C08L2207/00—Properties characterising the ingredient of the composition
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- C08L2207/068—Ultra high molecular weight polyethylene
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Abstract
The invention discloses a high-flexibility and anti-aging nylon heat insulation strip and a manufacturing method thereof, wherein the high-flexibility and anti-aging nylon heat insulation strip comprises 1100-plus-120 parts of high-viscosity long carbon chain nylon resin, 30-40 parts of regenerated nylon, 10-15 parts of inorganic filler, 5-10 parts of high-elasticity polypropylene fiber, 30-35 parts of maleic anhydride grafted polypropylene, 15-20 parts of nano calcium carbonate, 10-15 parts of toughened polylactic acid fiber and 4-8 parts of asphalt-based chopped carbon fiber; by using the regenerated nylon and the high-viscosity long-carbon-chain nylon resin as main components, the resource cost can be saved by recycling the regenerated nylon, the regenerated nylon also has good low-temperature impact property, dimensional stability, high rigidity and low warpage, the flexibility of the nylon heat insulation strip can be improved by polymerizing the high-viscosity long-carbon-chain nylon resin and the regenerated nylon by using nano calcium carbonate, and the manufactured nylon heat insulation strip also has excellent aging resistance and oxidation resistance.
Description
Technical Field
The invention relates to the technical field of heat insulation strip manufacturing, in particular to a high-flexibility and anti-aging nylon heat insulation strip and a manufacturing method thereof.
Background
With the continuous increase of environmental pollution and energy consumption in modern society, the requirements of people on energy conservation and emission reduction are gradually increased, and aluminum alloy doors and windows in the building industry also face the problem. The aluminum alloy door and window has the advantages of light weight, easy processing, good flame retardance, recyclability, beautiful appearance and the like, and is widely applied to the construction industry.
Nylon is one of engineering plastics which are most widely applied, has excellent performances such as high heat resistance, wear resistance, solvent resistance and the like, is small in heat conductivity coefficient due to the use of glass fiber reinforced nylon, can well play a role in blocking heat conduction, can be proved to be used as a heat insulation strip, and is widely applied to the heat insulation treatment process of door and window profiles at present.
However, the heat insulating strip for the aluminum alloy window at present has the problems of poor flexibility and ageing resistance, the problem of brittle fracture easily occurs in the using process, and meanwhile, a lot of waste nylon products are not well recycled in the actual production life, so that the resource waste is caused. Therefore, the invention provides a high-flexibility anti-aging nylon heat insulation strip and a manufacturing method thereof, and aims to overcome the defects in the prior art.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a high-flexibility and anti-aging nylon heat insulating strip and a manufacturing method thereof, in which a regenerated nylon and a high-viscosity long carbon chain nylon resin are used as main components, the reuse of the regenerated nylon can save resource cost, the regenerated nylon itself has good low-temperature impact resistance, dimensional stability, high rigidity and low warpage, the toughness of the high-viscosity long carbon chain nylon resin and the regenerated nylon can be improved by polymerizing the high-viscosity long carbon chain nylon resin and the regenerated nylon with nano calcium carbonate, and the flexibility of the nylon heat insulating strip can be improved, and the manufactured nylon heat insulating strip has excellent anti-aging property and oxidation resistance.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme:
a high-flexibility anti-aging nylon heat insulation strip comprises the following components in percentage by mass: 100 portions of high-viscosity long-carbon-chain nylon resin, 120 portions of regenerated nylon, 30-40 portions of inorganic filler, 10-15 portions of high-elastic polypropylene fiber, 30-35 portions of maleic anhydride grafted polypropylene, 15-20 portions of nano calcium carbonate, 10-15 portions of toughened polylactic acid fiber, 4-8 portions of asphalt-based chopped carbon fiber, 5-10 portions of modified glass fiber, 8-12 portions of ultrahigh molecular weight polyethylene, 3-5 portions of white carbon black, 1-2 portions of molybdenum disulfide, 2-4 portions of zirconium silicate nano powder, 10-12 portions of impact modifier, 0.8-1.5 portions of antioxidant and 0.5-1 portion of light stabilizer.
The further improvement lies in that: comprises the following components in percentage by mass: 110 parts of high-viscosity long-carbon-chain nylon resin, 35 parts of regenerated nylon, 12 parts of inorganic filler, 8 parts of high-elasticity polypropylene fiber, 33 parts of maleic anhydride grafted polypropylene, 18 parts of nano calcium carbonate, 12 parts of toughened polylactic acid fiber, 6 parts of asphalt-based chopped carbon fiber, 8 parts of modified glass fiber, 10 parts of ultrahigh molecular weight polyethylene, 4 parts of white carbon black, 1.5 parts of molybdenum disulfide, 3 parts of zirconium silicate nano powder, 11 parts of impact modifier, 1.2 parts of antioxidant and 0.8 part of light stabilizer.
The further improvement lies in that: the viscosity of the high-viscosity long carbon chain nylon resin is 3.2-4.6 Pa.s, and the modified glass fiber is obtained by soaking short glass fiber in a coupling agent.
The further improvement lies in that: the inorganic filler is one or more of active fly ash, aluminum oxide powder, talcum powder, kaolin, ice powder or graphite.
The further improvement lies in that: the regenerated nylon is formed by washing, drying, smelting and granulating waste nylon yarns, nylon yarns or nylon cloth, and the high-elasticity polypropylene fiber is formed by adding 7-9% of ultrahigh molecular weight polyethylene into 93-91% of polypropylene resin and carrying out common melt spinning.
A manufacturing method of a high-flexibility anti-aging nylon heat insulation strip comprises the following steps:
the method comprises the following steps: modifying the asphalt-based chopped carbon fibers, and performing surface treatment on the asphalt-based chopped carbon fibers by using a liquid-phase oxidation method to obtain modified asphalt-based chopped carbon fibers;
step two: carrying out polymerization treatment on the nano calcium carbonate, the high-viscosity long-carbon-chain nylon resin and the regenerated nylon by using an ultrasonic dispersion in-situ polymerization method to prepare a nylon composite material;
step three: mixing maleic anhydride grafted polypropylene with high-elasticity polypropylene fibers, modified asphalt-based chopped carbon fibers, modified glass fibers, toughened polylactic acid fibers, molybdenum disulfide, zirconium silicate nanopowder, white carbon black and ultrahigh molecular weight polyethylene to obtain a mixture;
step four: mixing the nylon composite material, the mixture, the inorganic filler, the impact resistance modifier, the antioxidant and the light stabilizer to obtain a blank;
step five: and extruding and granulating the blank by using an extruder, drying, and finally performing extrusion molding by using a molding die.
The further improvement lies in that: the specific process of performing surface treatment on the pitch-based chopped carbon fibers by using a liquid-phase oxidation method in the first step is as follows: potassium permanganate is used as an oxidant, and then the asphalt-based chopped carbon fibers are placed into a potassium permanganate aqueous solution for soaking, the soaking temperature is controlled to be 60-100 ℃, the soaking time is 2-6h, and the usage amount of the potassium permanganate is 4-12% owf.
The further improvement lies in that: the specific process in the step two is as follows: firstly, melting regenerated nylon, mixing and stirring nano calcium carbonate, high-viscosity long-carbon-chain nylon resin and the melted regenerated nylon for 20-30min, and then carrying out ultrasonic dispersion for 0.2-1.2h by using ultrasonic dispersion equipment to prepare the nylon composite material.
The further improvement lies in that: in the third step, the high-elasticity polypropylene fiber, the modified asphalt-based chopped carbon fiber, the modified glass fiber and the toughened polylactic acid fiber are soaked for 40-70min by using the maleic anhydride grafted polypropylene, the fiber material is modified, and then the fiber material is mixed with the molybdenum disulfide, the zirconium silicate nano powder, the white carbon black and the ultrahigh molecular weight polyethylene and stirred for 10-20min to obtain a mixture.
The further improvement lies in that: and in the fifth step, the extrusion granulation temperature is controlled to be 240-275 ℃, the drying temperature is controlled to be 80-110 ℃, when the die is used for extrusion molding, the die is preheated, the preheating temperature is controlled to be 35-40 ℃, and the preheating time is controlled to be 20-30 min.
The invention has the beneficial effects that:
1. by using the regenerated nylon and the high-viscosity long-carbon-chain nylon resin as main components, the resource cost can be saved by recycling the regenerated nylon, the recycled nylon belongs to a green and environment-friendly way, the regenerated nylon has good low-temperature impact property, dimensional stability, high rigidity and low warping property, and the economic benefit and the product quality generated when the regenerated nylon is used for manufacturing the nylon heat-insulating strip are obvious;
2. the toughness of the high-viscosity long-carbon-chain nylon resin and the regenerated nylon can be improved by carrying out polymerization treatment on the high-viscosity long-carbon-chain nylon resin and the regenerated nylon by using the nano calcium carbonate, so that the flexibility of the nylon heat insulation strip can be improved;
3. by carrying out surface treatment on the pitch-based chopped carbon fibers by using a liquid-phase oxidation method, the surface roughness, the specific surface area and the number of oxygen-containing functional groups on the surface of the pitch-based chopped carbon fibers can be increased, the bonding strength between the prepared pitch-based chopped carbon fibers and nylon resin is improved, and the performance of the nylon heat-insulating strip can be improved;
4. the high-elasticity polypropylene fiber, the asphalt-based chopped carbon fiber, the modified glass fiber and the toughened polylactic acid fiber are used as additive components, so that the rigidity of the nylon heat insulating strip can be improved, the creep property is reduced, the molding shrinkage rate of the nylon heat insulating strip is reduced, the dimensional stability is improved, the shrinkage rate of the nylon heat insulating strip can be obviously improved by the inorganic filler, the heat deformation temperature is obviously improved, the impact strength is also obviously improved, the ultrahigh molecular weight polyethylene has the advantages of good toughness and no fracture, and the toughness can be obviously improved when the ultrahigh molecular weight polyethylene is used for manufacturing the nylon heat insulating strip;
5. by adding molybdenum sulfide, zirconium silicate nano powder, an impact modifier, an antioxidant and a light stabilizer and matching with other components, the manufactured nylon heat insulating strip can be ensured to have excellent aging resistance and oxidation resistance.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
A high-flexibility anti-aging nylon heat insulation strip comprises the following components in percentage by mass: 100 parts of high-viscosity long-carbon-chain nylon resin, 30 parts of regenerated nylon, 10 parts of inorganic filler, 5 parts of high-elasticity polypropylene fiber, 30 parts of maleic anhydride grafted polypropylene, 15 parts of nano calcium carbonate, 10 parts of toughened polylactic acid fiber, 4 parts of asphalt-based chopped carbon fiber, 5 parts of modified glass fiber, 8 parts of ultrahigh molecular weight polyethylene, 3 parts of white carbon black, 1 part of molybdenum disulfide, 2 parts of zirconium silicate nano powder, 10 parts of impact modifier, 0.8 part of antioxidant and 0.5 part of light stabilizer.
The viscosity of the high-viscosity long carbon chain nylon resin is 3.8 Pa.s, and the modified glass fiber is obtained by soaking short glass fiber in a coupling agent.
The inorganic filler is a mixture of a plurality of active fly ash, aluminum oxide powder, talcum powder, kaolin, ice powder and graphite.
The regenerated nylon is formed by washing, drying, smelting and granulating waste nylon yarns, nylon yarns or nylon cloth, and the high-elasticity polypropylene fiber is formed by adding 8% of ultrahigh molecular weight polyethylene into 92% of polypropylene resin and carrying out common melt spinning.
A manufacturing method of a high-flexibility anti-aging nylon heat insulation strip comprises the following steps:
the method comprises the following steps: modifying the asphalt-based chopped carbon fibers, performing surface treatment on the asphalt-based chopped carbon fibers by using a liquid-phase oxidation method, using potassium permanganate as an oxidant, then putting the asphalt-based chopped carbon fibers into a potassium permanganate aqueous solution for soaking, wherein the soaking temperature is controlled to be 80 ℃, the soaking time is 4 hours, and the use amount of potassium permanganate is 8% owf, so as to obtain the modified asphalt-based chopped carbon fibers;
step two: firstly, melting regenerated nylon, mixing and stirring nano calcium carbonate, high-viscosity long-carbon-chain nylon resin and the melted regenerated nylon for 25min, and then carrying out ultrasonic dispersion for 0.8h by using ultrasonic dispersion equipment to prepare a nylon composite material;
step three: soaking high-elasticity polypropylene fibers, modified asphalt-based chopped carbon fibers, modified glass fibers and toughened polylactic acid fibers for 55min by using maleic anhydride grafted polypropylene, modifying fiber materials, and then mixing and stirring the fiber materials with molybdenum disulfide, zirconium silicate nano powder, white carbon black and ultrahigh molecular weight polyethylene for 16min to obtain a mixture;
step four: mixing the nylon composite material, the mixture, the inorganic filler, the impact resistance modifier, the antioxidant and the light stabilizer to obtain a blank;
step five: extruding and granulating the blank by using an extruder, drying, and finally performing extrusion molding by using a molding die, wherein the extrusion granulation temperature is controlled to be 20 ℃, the drying temperature is controlled to be 100 ℃, when the extrusion molding is performed by using the die, the die is preheated, the preheating temperature is controlled to be 38 ℃, and the preheating time is controlled to be 26 min.
Example two
A high-flexibility anti-aging nylon heat insulation strip comprises the following components in percentage by mass: 110 parts of high-viscosity long-carbon-chain nylon resin, 35 parts of regenerated nylon, 12 parts of inorganic filler, 8 parts of high-elasticity polypropylene fiber, 33 parts of maleic anhydride grafted polypropylene, 18 parts of nano calcium carbonate, 12 parts of toughened polylactic acid fiber, 6 parts of asphalt-based chopped carbon fiber, 8 parts of modified glass fiber, 10 parts of ultrahigh molecular weight polyethylene, 4 parts of white carbon black, 1.5 parts of molybdenum disulfide, 3 parts of zirconium silicate nano powder, 11 parts of impact modifier, 1.2 parts of antioxidant and 0.8 part of light stabilizer.
The viscosity of the high-viscosity long carbon chain nylon resin is 3.8 Pa.s, and the modified glass fiber is obtained by soaking short glass fiber in a coupling agent.
The inorganic filler is a mixture of a plurality of active fly ash, aluminum oxide powder, talcum powder, kaolin, ice powder and graphite.
The regenerated nylon is formed by washing, drying, smelting and granulating waste nylon yarns, nylon yarns or nylon cloth, and the high-elasticity polypropylene fiber is formed by adding 8% of ultrahigh molecular weight polyethylene into 92% of polypropylene resin and carrying out common melt spinning.
A manufacturing method of a high-flexibility anti-aging nylon heat insulation strip comprises the following steps:
the method comprises the following steps: modifying the asphalt-based chopped carbon fibers, performing surface treatment on the asphalt-based chopped carbon fibers by using a liquid-phase oxidation method, using potassium permanganate as an oxidant, then putting the asphalt-based chopped carbon fibers into a potassium permanganate aqueous solution for soaking, wherein the soaking temperature is controlled to be 80 ℃, the soaking time is 4 hours, and the use amount of potassium permanganate is 8% owf, so as to obtain the modified asphalt-based chopped carbon fibers;
step two: firstly, melting regenerated nylon, mixing and stirring nano calcium carbonate, high-viscosity long-carbon-chain nylon resin and the melted regenerated nylon for 25min, and then carrying out ultrasonic dispersion for 0.8h by using ultrasonic dispersion equipment to prepare a nylon composite material;
step three: soaking high-elasticity polypropylene fibers, modified asphalt-based chopped carbon fibers, modified glass fibers and toughened polylactic acid fibers for 55min by using maleic anhydride grafted polypropylene, modifying fiber materials, and then mixing and stirring the fiber materials with molybdenum disulfide, zirconium silicate nano powder, white carbon black and ultrahigh molecular weight polyethylene for 16min to obtain a mixture;
step four: mixing the nylon composite material, the mixture, the inorganic filler, the impact resistance modifier, the antioxidant and the light stabilizer to obtain a blank;
step five: extruding and granulating the blank by using an extruder, drying, and finally performing extrusion molding by using a molding die, wherein the extrusion granulation temperature is controlled to be 20 ℃, the drying temperature is controlled to be 100 ℃, when the extrusion molding is performed by using the die, the die is preheated, the preheating temperature is controlled to be 38 ℃, and the preheating time is controlled to be 26 min.
EXAMPLE III
A high-flexibility anti-aging nylon heat insulation strip comprises the following components in percentage by mass: 120 parts of high-viscosity long-carbon-chain nylon resin, 40 parts of regenerated nylon, 15 parts of inorganic filler, 10 parts of high-elasticity polypropylene fiber, 35 parts of maleic anhydride grafted polypropylene, 20 parts of nano calcium carbonate, 15 parts of toughened polylactic acid fiber, 4-8 parts of asphalt-based chopped carbon fiber, 10 parts of modified glass fiber, 12 parts of ultrahigh molecular weight polyethylene, 5 parts of white carbon black, 2 parts of molybdenum disulfide, 4 parts of zirconium silicate nano powder, 12 parts of impact modifier, 1.5 parts of antioxidant and 1 part of light stabilizer.
The viscosity of the high-viscosity long carbon chain nylon resin is 3.8 Pa.s, and the modified glass fiber is obtained by soaking short glass fiber in a coupling agent.
The inorganic filler is a mixture of a plurality of active fly ash, aluminum oxide powder, talcum powder, kaolin, ice powder and graphite.
The regenerated nylon is formed by washing, drying, smelting and granulating waste nylon yarns, nylon yarns or nylon cloth, and the high-elasticity polypropylene fiber is formed by adding 8% of ultrahigh molecular weight polyethylene into 92% of polypropylene resin and carrying out common melt spinning.
A manufacturing method of a high-flexibility anti-aging nylon heat insulation strip comprises the following steps:
the method comprises the following steps: modifying the asphalt-based chopped carbon fibers, performing surface treatment on the asphalt-based chopped carbon fibers by using a liquid-phase oxidation method, using potassium permanganate as an oxidant, then putting the asphalt-based chopped carbon fibers into a potassium permanganate aqueous solution for soaking, wherein the soaking temperature is controlled to be 80 ℃, the soaking time is 4 hours, and the use amount of potassium permanganate is 8% owf, so as to obtain the modified asphalt-based chopped carbon fibers;
step two: firstly, melting regenerated nylon, mixing and stirring nano calcium carbonate, high-viscosity long-carbon-chain nylon resin and the melted regenerated nylon for 25min, and then carrying out ultrasonic dispersion for 0.8h by using ultrasonic dispersion equipment to prepare a nylon composite material;
step three: soaking high-elasticity polypropylene fibers, modified asphalt-based chopped carbon fibers, modified glass fibers and toughened polylactic acid fibers for 55min by using maleic anhydride grafted polypropylene, modifying fiber materials, and then mixing and stirring the fiber materials with molybdenum disulfide, zirconium silicate nano powder, white carbon black and ultrahigh molecular weight polyethylene for 16min to obtain a mixture;
step four: mixing the nylon composite material, the mixture, the inorganic filler, the impact resistance modifier, the antioxidant and the light stabilizer to obtain a blank;
step five: extruding and granulating the blank by using an extruder, drying, and finally performing extrusion molding by using a molding die, wherein the extrusion granulation temperature is controlled to be 20 ℃, the drying temperature is controlled to be 100 ℃, when the extrusion molding is performed by using the die, the die is preheated, the preheating temperature is controlled to be 38 ℃, and the preheating time is controlled to be 26 min.
The nylon heat insulating strips manufactured in the first, second and third embodiments are used as experimental samples, two commercially available nylon heat insulating strips are selected as comparison samples respectively, and then the tensile strength of the experimental samples and the comparison samples is detected to obtain the detection results shown in table 1:
TABLE 1
The performances of the experimental sample 1, the experimental sample 2, the experimental sample 3, the comparative sample 1 and the comparative sample 2 are detected, and the detection results shown in table 2 are obtained:
TABLE 2
According to the first embodiment, the second embodiment, the third embodiment and tables 1 and 2, the invention can be obtained by the following components in percentage by mass: 100-120 parts of high-viscosity long-carbon-chain nylon resin, 30-40 parts of regenerated nylon, 10-15 parts of inorganic filler, 5-10 parts of high-elasticity polypropylene fiber, 30-35 parts of maleic anhydride grafted polypropylene, 15-20 parts of nano calcium carbonate, 10-15 parts of toughened polylactic acid fiber, 4-8 parts of asphalt-based chopped carbon fiber, 5-10 parts of modified glass fiber, 8-12 parts of ultrahigh molecular weight polyethylene, 3-5 parts of white carbon black, 1-2 parts of molybdenum disulfide, 2-4 parts of zirconium silicate nano powder, 10-12 parts of impact modifier, 0.8-1.5 parts of antioxidant and 0.5-1 part of light stabilizer.
By using the regenerated nylon and the high-viscosity long-carbon-chain nylon resin as main components, the resource cost can be saved by recycling the regenerated nylon, the recycled nylon belongs to a green and environment-friendly way, the regenerated nylon has good low-temperature impact property, dimensional stability, high rigidity and low warping property, and the economic benefit and the product quality generated when the regenerated nylon is used for manufacturing the nylon heat-insulating strip are obvious;
the toughness of the high-viscosity long-carbon-chain nylon resin and the regenerated nylon can be improved by carrying out polymerization treatment on the high-viscosity long-carbon-chain nylon resin and the regenerated nylon by using the nano calcium carbonate, so that the flexibility of the nylon heat insulation strip can be improved;
by carrying out surface treatment on the pitch-based chopped carbon fibers by using a liquid-phase oxidation method, the surface roughness, the specific surface area and the number of oxygen-containing functional groups on the surface of the pitch-based chopped carbon fibers can be increased, the bonding strength between the prepared pitch-based chopped carbon fibers and nylon resin is improved, and the performance of the nylon heat-insulating strip can be improved;
the high-elasticity polypropylene fiber, the asphalt-based chopped carbon fiber, the modified glass fiber and the toughened polylactic acid fiber are used as additive components, so that the rigidity of the nylon heat insulating strip can be improved, the creep property is reduced, the molding shrinkage rate of the nylon heat insulating strip is reduced, the dimensional stability is improved, the shrinkage rate of the nylon heat insulating strip can be obviously improved by the inorganic filler, the heat deformation temperature is obviously improved, the impact strength is also obviously improved, the ultrahigh molecular weight polyethylene has the advantages of good toughness and no fracture, and the toughness can be obviously improved when the ultrahigh molecular weight polyethylene is used for manufacturing the nylon heat insulating strip;
by adding molybdenum sulfide, zirconium silicate nano powder, an impact modifier, an antioxidant and a light stabilizer and matching with other components, the manufactured nylon heat insulating strip can be ensured to have excellent aging resistance and oxidation resistance.
The foregoing illustrates and describes the principles, essential features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a high pliability, thermal-insulated strip of ageing resistance nylon which characterized in that: comprises the following components in percentage by mass: 100 portions of high-viscosity long-carbon-chain nylon resin, 120 portions of regenerated nylon, 30-40 portions of inorganic filler, 10-15 portions of high-elastic polypropylene fiber, 30-35 portions of maleic anhydride grafted polypropylene, 15-20 portions of nano calcium carbonate, 10-15 portions of toughened polylactic acid fiber, 4-8 portions of asphalt-based chopped carbon fiber, 5-10 portions of modified glass fiber, 8-12 portions of ultrahigh molecular weight polyethylene, 3-5 portions of white carbon black, 1-2 portions of molybdenum disulfide, 2-4 portions of zirconium silicate nano powder, 10-12 portions of impact modifier, 0.8-1.5 portions of antioxidant and 0.5-1 portion of light stabilizer.
2. The high-flexibility anti-aging nylon heat insulation strip as claimed in claim 1, wherein: comprises the following components in percentage by mass: 110 parts of high-viscosity long-carbon-chain nylon resin, 35 parts of regenerated nylon, 12 parts of inorganic filler, 8 parts of high-elasticity polypropylene fiber, 33 parts of maleic anhydride grafted polypropylene, 18 parts of nano calcium carbonate, 12 parts of toughened polylactic acid fiber, 6 parts of asphalt-based chopped carbon fiber, 8 parts of modified glass fiber, 10 parts of ultrahigh molecular weight polyethylene, 4 parts of white carbon black, 1.5 parts of molybdenum disulfide, 3 parts of zirconium silicate nano powder, 11 parts of impact modifier, 1.2 parts of antioxidant and 0.8 part of light stabilizer.
3. The high-flexibility anti-aging nylon heat insulation strip as claimed in claim 1, wherein: the viscosity of the high-viscosity long carbon chain nylon resin is 3.2-4.6 Pa.s, and the modified glass fiber is obtained by soaking short glass fiber in a coupling agent.
4. The high-flexibility anti-aging nylon heat insulation strip as claimed in claim 1, wherein: the inorganic filler is one or more of active fly ash, aluminum oxide powder, talcum powder, kaolin, ice powder or graphite.
5. The high-flexibility anti-aging nylon heat insulation strip as claimed in claim 1, wherein: the regenerated nylon is formed by washing, drying, smelting and granulating waste nylon yarns, nylon yarns or nylon cloth, and the high-elasticity polypropylene fiber is formed by adding 7-9% of ultrahigh molecular weight polyethylene into 93-91% of polypropylene resin and carrying out common melt spinning.
6. A manufacturing method of a high-flexibility anti-aging nylon heat insulation strip is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: modifying the asphalt-based chopped carbon fibers, and performing surface treatment on the asphalt-based chopped carbon fibers by using a liquid-phase oxidation method to obtain modified asphalt-based chopped carbon fibers;
step two: carrying out polymerization treatment on the nano calcium carbonate, the high-viscosity long-carbon-chain nylon resin and the regenerated nylon by using an ultrasonic dispersion in-situ polymerization method to prepare a nylon composite material;
step three: mixing maleic anhydride grafted polypropylene with high-elasticity polypropylene fibers, modified asphalt-based chopped carbon fibers, modified glass fibers, toughened polylactic acid fibers, molybdenum disulfide, zirconium silicate nanopowder, white carbon black and ultrahigh molecular weight polyethylene to obtain a mixture;
step four: mixing the nylon composite material, the mixture, the inorganic filler, the impact resistance modifier, the antioxidant and the light stabilizer to obtain a blank;
step five: and extruding and granulating the blank by using an extruder, drying, and finally performing extrusion molding by using a molding die.
7. The manufacturing method of the high-flexibility anti-aging nylon heat insulation strip as claimed in claim 6, wherein the manufacturing method comprises the following steps: the specific process of performing surface treatment on the pitch-based chopped carbon fibers by using a liquid-phase oxidation method in the first step is as follows: potassium permanganate is used as an oxidant, and then the asphalt-based chopped carbon fibers are placed into a potassium permanganate aqueous solution for soaking, the soaking temperature is controlled to be 60-100 ℃, the soaking time is 2-6h, and the usage amount of the potassium permanganate is 4-12% owf.
8. The manufacturing method of the high-flexibility anti-aging nylon heat insulation strip as claimed in claim 6, wherein the manufacturing method comprises the following steps: the specific process in the step two is as follows: firstly, melting regenerated nylon, mixing and stirring nano calcium carbonate, high-viscosity long-carbon-chain nylon resin and the melted regenerated nylon for 20-30min, and then carrying out ultrasonic dispersion for 0.2-1.2h by using ultrasonic dispersion equipment to prepare the nylon composite material.
9. The manufacturing method of the high-flexibility anti-aging nylon heat insulation strip as claimed in claim 6, wherein the manufacturing method comprises the following steps: in the third step, the high-elasticity polypropylene fiber, the modified asphalt-based chopped carbon fiber, the modified glass fiber and the toughened polylactic acid fiber are soaked for 40-70min by using the maleic anhydride grafted polypropylene, the fiber material is modified, and then the fiber material is mixed with the molybdenum disulfide, the zirconium silicate nano powder, the white carbon black and the ultrahigh molecular weight polyethylene and stirred for 10-20min to obtain a mixture.
10. The manufacturing method of the high-flexibility anti-aging nylon heat insulation strip as claimed in claim 6, wherein the manufacturing method comprises the following steps: and in the fifth step, the extrusion granulation temperature is controlled to be 240-275 ℃, the drying temperature is controlled to be 80-110 ℃, when the die is used for extrusion molding, the die is preheated, the preheating temperature is controlled to be 35-40 ℃, and the preheating time is controlled to be 20-30 min.
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| CN115197564A (en) * | 2022-03-22 | 2022-10-18 | 佛山市杰财科技有限公司 | Reinforced nylon particle and preparation method thereof |
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