CN116082736A - High-toughness environment-friendly pearl cotton section bar for packaging and preparation method thereof - Google Patents
High-toughness environment-friendly pearl cotton section bar for packaging and preparation method thereof Download PDFInfo
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- CN116082736A CN116082736A CN202310104853.9A CN202310104853A CN116082736A CN 116082736 A CN116082736 A CN 116082736A CN 202310104853 A CN202310104853 A CN 202310104853A CN 116082736 A CN116082736 A CN 116082736A
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- toughness
- foaming
- pearl cotton
- packaging
- isophorone diisocyanate
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 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 claims abstract description 43
- 239000003063 flame retardant Substances 0.000 claims abstract description 43
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 26
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 23
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 23
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 21
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 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 abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 238000005187 foaming Methods 0.000 claims description 30
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 25
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 239000002041 carbon nanotube Substances 0.000 claims description 23
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 23
- 239000002131 composite material Substances 0.000 claims description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 22
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 claims description 20
- 239000002048 multi walled nanotube Substances 0.000 claims description 20
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims description 18
- 239000011574 phosphorus Substances 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 17
- 239000000178 monomer Substances 0.000 claims description 16
- 229920005862 polyol Polymers 0.000 claims description 16
- 150000003077 polyols Chemical class 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 13
- 229910052731 fluorine Inorganic materials 0.000 claims description 13
- 239000011737 fluorine Substances 0.000 claims description 13
- 229910021485 fumed silica Inorganic materials 0.000 claims description 13
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical group CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 11
- 239000001569 carbon dioxide Substances 0.000 claims description 11
- MRVZORUPSXTRHD-UHFFFAOYSA-N bis(hydroxymethyl)phosphorylmethanol Chemical compound OCP(=O)(CO)CO MRVZORUPSXTRHD-UHFFFAOYSA-N 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 9
- BYKNGMLDSIEFFG-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptan-1-ol Chemical compound OCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)F BYKNGMLDSIEFFG-UHFFFAOYSA-N 0.000 claims description 8
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 8
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 239000012300 argon atmosphere Substances 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000004643 cyanate ester Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 125000004185 ester group Chemical group 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 239000004811 fluoropolymer Substances 0.000 claims description 5
- 229920002313 fluoropolymer Polymers 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 125000005456 glyceride group Chemical group 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims 6
- 239000002667 nucleating agent Substances 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 239000005022 packaging material Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 238000006068 polycondensation reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000497 foam cell Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate group Chemical group [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920006262 high density polyethylene film Polymers 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
- C08J2203/182—Binary blends of expanding agents of physical blowing agents, e.g. acetone and butane
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-toughness environment-friendly pearl cotton section bar for packaging and a preparation method thereof, and relates to the technical field of pearl cotton packaging materials. The invention is used for solving the technical problem that the comprehensive performance of hydrophobicity, flame retardance and toughness is not improved by matching other auxiliary components with LDPE resin, and the stable and uniform size cannot be ensured in the preparation process; the low-density polyethylene resin material is used as a main component, and on the basis of conventional nucleating agent light calcium carbonate, talcum powder and foaming agent, the hydrophobic flame retardant auxiliary agent for improving the thermal stability, flame retardance and hydrophobicity and the energy absorption reinforcing filler for improving the toughness and mechanical property are assisted, so that the flattening material presents good hydrophobicity, flame retardance and toughness; when the pearl cotton section bar obtained by deep processing is applied to the packaging of articles, the articles can isolate moisture for a long time, play an energy absorption and buffering role when being collided, play a small-amplitude deformation role so as to keep the appearance of the articles stable and keep the dimension stable in an indoor high-temperature environment.
Description
Technical Field
The invention relates to the technical field of pearl cotton packaging materials, in particular to a high-toughness environment-friendly pearl cotton profile for packaging and a preparation method thereof.
Background
The pearl cotton packing material is a new type polyethylene plastic product, and has special advantages, not only no environmental pollution, but also repeated recycling. The pearl cotton packaging material adopts physical foaming instead of chemical foaming, and the production process has relatively strict requirements on the selection and temperature control of physical foaming agents, foaming auxiliary agents, shrink-resistant agents and nucleating agents. The EPE pearl cotton foamed sheet can be deeply processed by matching with a pearl cotton film covering machine and a compounding machine, and HDPE films, aluminized films, plastic coated papers, plastic coated cloths and the like are covered on the surface of the EPE sheet, so that the mechanical strength is improved, various original performances are improved, and various patterns and characters are conveniently printed.
Publication patent (CN 109485977B) discloses an EPE pearl cotton material and a preparation method thereof. The raw materials comprise LDPE resin granules, a nucleating agent, monoglyceride, a stable master batch and a mixed foaming agent in parts by weight; the mixed foaming agent comprises CO 2 And butane. According to the invention, by selecting proper mixed foaming agent types, proper mixing ratios and proper components, the foaming agent in the foam cells can be exchanged with air as soon as possible on the premise of ensuring that the foam cells of the EPE pearl cotton material do not collapse and the product does not shrink, so that the storage and curing process of the EPE pearl cotton material is shortened; the EPE pearl cotton material has compact and uniform cells, and has good product performance, such as good buffering and shock resistance. However, researches show that the pearl cotton section bar for packaging and the preparation method thereof in the prior art do not improve the comprehensive properties of hydrophobicity, flame retardance and toughness by matching other auxiliary components with LDPE resin, and the preparation process cannot guarantee stable and uniform size.
Disclosure of Invention
The invention aims to provide a high-toughness environment-friendly pearl cotton section bar for packaging and a preparation method thereof, which are used for solving the technical problems that the pearl cotton section bar for packaging and the preparation method thereof in the prior art are not capable of improving the comprehensive performance of hydrophobicity, flame retardance and toughness by matching other auxiliary components with LDPE resin, and the preparation process cannot guarantee stable and uniform size.
The aim of the invention can be achieved by the following technical scheme:
the invention provides a high-toughness environment-friendly pearl cotton section for packaging, which is prepared by mixing, foaming extrusion, cooling shaping, flattening traction and deep processing of the following components in parts by weight: 95-113 parts of LDPE resin material, 7-13 parts of hydrophobic flame retardant auxiliary agent, 2-6 parts of single fatty glyceride, 0.8-1.5 parts of light calcium carbonate, 0.5-1 part of talcum powder, 10-22 parts of foaming agent and 0.6-1.3 parts of energy absorption reinforcing filler; wherein the foaming agent is n-butane and carbon dioxide according to the weight ratio of 1-2: 1; the melt index range of the LDPE resin material is 2-5 g/cm 3 The density is 0.91-0.93 g/cm 3 。
Further, the preparation method of the hydrophobic flame retardant auxiliary comprises the following steps:
step one, adding isophorone diisocyanate and dibutyltin dilaurate into a four-neck flask equipped with a mechanical stirrer, a condenser tube and a constant pressure dropping funnel, heating to 50 ℃ under the protection of nitrogen, adding bis (trimethylol) propane, and then carrying out heat preservation and stirring reaction to detect isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate radical on NCO is completely reacted, dropwise adding diethanolamine into a four-neck flask through a constant-pressure dropping funnel, heating to 60 ℃ after the dropwise adding is finished, preserving heat and reacting for 3 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a polyol multi-branched flame-retardant monomer;
the synthesis reaction principle of the first step is as follows:
step two, adding isophorone diisocyanate and dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding dodecafluoro heptanol, stirring and reacting for 2 hours, heating to 70 ℃, and detecting isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate ester group on NCO is reacted completely, adding acetone-dissolved trimethylol phosphorus oxide, stirring and reacting for 5 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a phosphorus-containing fluorine-containing polymer;
the synthesis reaction principle of the second step is as follows:
adding isophorone diisocyanate and dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding a phosphorus-containing fluorine-containing polymer, reacting for 3 hours, heating to 60 ℃, adding an acetone-dissolved polyol multi-branched flame-retardant monomer, reacting for 8 hours, and adding deionized water to obtain the hydrophobic flame-retardant auxiliary agent with the solid content of 50%.
The hydrophobic flame-retardant auxiliary agent takes bis (trimethylol) propane with a plurality of branched chain end hydroxyl groups and isophorone diisocyanate as raw materials, and is subjected to polycondensation reaction under the catalysis of dibutyltin dilaurate, and then diethanolamine is added to carry out polycondensation reaction to obtain a polyol multi-branched flame-retardant monomer with multi-branched chain and hydroxyl end groups; the preparation method comprises the steps of taking dodecafluoroheptanol with a plurality of weather-proof hydrophobic fluorocarbon bonds as a raw material, carrying out polycondensation reaction with isophorone diisocyanate, and carrying out polymerization reaction with a reactive organophosphorus flame retardant, namely trimethylol phosphorus oxide, containing active hydroxymethyl to obtain a weather-proof, hydrophobic and flame-retardant phosphorus-containing fluoropolymer; finally, the polyol multi-branched flame-retardant monomer and the phosphorus-containing fluorine-containing polymer are subjected to polycondensation reaction with isophorone diisocyanate due to the fact that the polyol multi-branched flame-retardant monomer and the phosphorus-containing fluorine-containing polymer contain terminal hydroxyl groups, so that the branched fluorine-containing phosphorus-containing polyurethane polymer is enhanced in hydrophobicity due to the increase of a water contact angle, and is good in compatibility with LDPE resin materials, and the flame retardance, the hydrophobicity and the thermal stability of the pearl cotton profile are remarkably improved after foaming extrusion.
Further, in the first step, the molar ratio of isophorone diisocyanate to dibutyltin dilaurate, bis (trimethylol) propane and diethanolamine is 4:0.03 to 0.06:1:1, a step of; in the step II, the molar ratio of isophorone diisocyanate to dibutyltin dilaurate, dodecafluoro-heptanol and trimethylol phosphorus oxide is 1: 0.02-0.04: 0.8-1: 0.8-1; in the third step, the mass ratio of isophorone diisocyanate to dibutyltin dilaurate, the phosphorus-containing fluorine-containing polymer and the polyol multi-branched flame-retardant monomer is 6-9: 1-3: 4-9: 8-15.
Further, the preparation method of the energy-absorbing reinforcing filler comprises the following steps:
step one, fumed silica powder, diatomite and zirconia grinding balls are mixed according to a ball-to-material ratio of 10:1, adding the mixture into a stainless steel ball grinding tank, adding absolute ethyl alcohol with the mass of 6-10 times of that of fumed silica powder, filling argon, ball-milling for 3 hours at the rotating speed of 400-600 rpm, and vacuum drying the ball grinding material at 90 ℃ to obtain an adsorption filler;
adding 80-100 mL of absolute ethyl alcohol into a beaker, adding the multiwall carbon nanotube and a polyethylene glycol dispersing agent, uniformly mixing and stirring, and performing ultrasonic treatment for 30-50 min to obtain multiwall carbon nanotube dispersing liquid; slowly adding the adsorption filler into the multiwall carbon nanotube dispersion liquid, stirring at 80 ℃ until absolute ethyl alcohol is completely volatilized, and drying until the absolute ethyl alcohol is constant in weight to obtain carbon nanotube composite powder;
and thirdly, cold pressing the carbon nano tube composite powder for 5min by adopting the pressure of 5-10 MPa, placing the carbon nano tube composite powder into a sintering furnace, and sintering the carbon nano tube composite powder for 3 hours at the temperature of 580-630 ℃ in an argon atmosphere to obtain the energy-absorbing reinforcing filler.
Further, in the first step, the mass ratio of the fumed silica powder to the diatomite is 3-5: 1, a step of; in the second step, the dosage ratio of the multiwall carbon nanotube to the polyethylene glycol dispersing agent to the adsorption filler is 8-12 g: 2-3 g: 10-18 g.
The invention also provides a preparation method of the high-toughness environment-friendly pearl cotton section bar for packaging, which comprises the following steps:
mixing: weighing LDPE resin material, hydrophobic flame retardant auxiliary agent, single fatty acid glyceride, light calcium carbonate, talcum powder and energy-absorbing reinforcing filler, sequentially adding into a foaming extruder, and uniformly mixing to obtain a mixture a;
foaming extrusion: preheating a foaming extruder to 50-60 ℃, injecting a foaming agent consisting of mixed gas of n-butane and carbon dioxide by using an air pump, heating to a molten state, and extruding through a die opening to obtain a foaming material;
cooling and shaping: after the foaming material is fixed by a clamp, air cooling and shaping are carried out at the temperature of 12-16 ℃ to obtain a shaping material;
flattening traction: the sizing material is pressed through flattening equipment to obtain flattened material, and a tractor is used for traction to the next working procedure;
deep processing: and bonding a plurality of layers of flattening materials into a specified thickness according to the external dimension of the pearl cotton section finished product and the dimension of the accommodating groove, and cutting by using a slitting and nickel-chromium electrothermal alloy wire to obtain the pearl cotton section finished product with the accommodating groove.
Further, the temperature of the die opening is 110-120 ℃; the pressing pressure is 1-2 MPa, and the traction speed is 5-8 m/min.
The invention has the following beneficial effects:
1. the environment-friendly pearl cotton section takes the low-density polyethylene resin material with good softness, extensibility, electrical insulation, transparency and easy processing as a main component, and on the basis of conventional nucleating agent light calcium carbonate, talcum powder and foaming agent, the environment-friendly pearl cotton section is assisted in improving the heat stability, flame retardance and hydrophobicity of a hydrophobic flame retardant auxiliary agent and energy absorption reinforcing filler for improving toughness and mechanical property, so that the flattened material subjected to foaming extrusion, cooling shaping and flattening traction presents good hydrophobicity, flame retardance and toughness; when the pearl cotton section bar obtained by deep processing is applied to the packaging of articles, the articles can isolate moisture for a long time, the energy absorption and buffering functions are exerted when the articles are impacted, the small deformation is exerted to keep the appearance of the articles stable, the dimensional stability of the articles in an indoor high-temperature environment is kept, and the application range of the pearl cotton section bar is increased.
2. According to the hydrophobic flame-retardant auxiliary agent, the polyol multi-branched flame-retardant monomer and the phosphorus-containing fluorine-containing polymer contain hydroxyl groups, and the hydroxyl groups are subjected to polycondensation reaction with isophorone diisocyanate to obtain the branched fluorine-containing phosphorus-containing polyurethane polymer, and the water contact angle is increased due to the introduction of fluorocarbon bonds, so that the hydrophobicity of the polyurethane polymer is enhanced, the compatibility with LDPE resin materials is good, and the flame retardance, the hydrophobicity and the thermal stability of the pearl cotton profile are obviously improved after foaming extrusion.
3. According to the energy absorption reinforcing filler, as the fumed silica is an aggregate containing a plurality of-OH, a uniform three-dimensional network structure, namely a hydrogen bond, is formed in ethanol, the viscosity of the fumed silica is reduced by utilizing the impact grinding action of zirconia grinding balls, the fumed silica is bonded and wrapped by diatomite with high adsorption performance and is subjected to plastic deformation, and part of argon can enter the pores of the diatomite and the pores of the fumed silica; the ultrasonic treatment after the adsorption filler is added into the multiwall carbon nanotube dispersion liquid can vibrate and remove argon in the pores to obtain carbon nanotube composite powder with compact pores, and the processes of cold pressing and sintering promote the improvement of the compactness and the tensile strength of the carbon nanotube composite powder; and the modified polyethylene is uniformly dispersed in a non-crosslinked closed-cell structure in the foaming extrusion process of the modified polyethylene and LDPE resin material, so that the overall toughness and the tensile strength of the pearl cotton section are improved.
4. According to the preparation method of the pearl cotton section bar, the mixed gas of the n-butane and the carbon dioxide is utilized for foaming, so that the safety of the foaming process is improved; the integral strength after bonding is improved by pressing in the flattening process; the pearl cotton section finished product obtained by cutting and cutting has stable and uniform size, and prolongs the storage and service life.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled 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.
Example 1
The high-toughness environment-friendly pearl cotton profile for packaging is prepared from the following components in parts by weight: 1080g of LDPE resin material, 106g of hydrophobic flame retardant auxiliary agent and 45g of single fatty acid glycerolOil ester, 13g of light calcium carbonate, 8g of talcum powder, 172g of foaming agent and 9g of energy-absorbing reinforcing filler; wherein the foaming agent is n-butane and carbon dioxide according to the weight ratio of 1.6: 1; the melt index of LDPE resin material is 4g/cm 3 Density of 0.91g/cm 3 。
The preparation method of the hydrophobic flame retardant auxiliary comprises the following steps:
step one, 8.89g of isophorone diisocyanate and 2.53g of dibutyltin dilaurate are added into a four-neck flask equipped with a mechanical stirrer, a condenser tube and a constant pressure dropping funnel, the temperature is raised to 50 ℃ under the protection of nitrogen, 2.5g of bis (trimethylol) propane is added, and after the reaction is carried out under the condition of heat preservation and stirring, the isophorone diisocyanate-CH is detected by TLC 2 Stopping the reaction after the cyanate radical on NCO is completely reacted, dripping 1.05g of diethanolamine into a four-neck flask through a constant pressure dropping funnel, heating to 60 ℃ after the dripping is finished, preserving heat and reacting for 3 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain the polyol multi-branched flame-retardant monomer;
step two, adding 2.22g isophorone diisocyanate and 1.89g dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 2.99g dodecafluoro heptanol, stirring for 2 hours, heating to 70 ℃, and detecting isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate ester group on NCO is reacted completely, adding 1.26g of trimethylol phosphorus oxide dissolved in acetone, stirring and reacting for 5 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a phosphorus-containing fluorine-containing polymer;
adding 7.85g of isophorone diisocyanate and 2.54g of dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 6.54g of phosphorus-containing fluoropolymer, reacting for 3 hours, heating to 60 ℃, adding 11.58g of polyol multi-branched flame-retardant monomer dissolved in acetone, reacting for 8 hours, and adding deionized water to obtain the hydrophobic flame-retardant auxiliary agent with 50% of solid content.
The preparation method of the energy-absorbing reinforcing filler comprises the following steps:
adding 36g of fumed silica powder, 10g of diatomite and 460g of zirconia grinding balls into a stainless steel ball grinding tank, adding 288g of absolute ethyl alcohol, filling argon, ball-milling for 3 hours at a rotating speed of 500rpm, and vacuum-drying the ball grinding materials at 90 ℃ to obtain an adsorption filler;
adding 90mL of absolute ethyl alcohol into a beaker, adding 10g of multi-wall carbon nano tubes and 2.2g of polyethylene glycol dispersing agent, uniformly mixing and stirring, and performing ultrasonic treatment for 40min to obtain multi-wall carbon nano tube dispersion; slowly adding 15g of adsorption filler into the multiwall carbon nanotube dispersion liquid, stirring at 80 ℃ until absolute ethyl alcohol is completely volatilized, and drying until constant weight is obtained to obtain carbon nanotube composite powder;
and thirdly, cold pressing the carbon nano tube composite powder for 5min by adopting the pressure of 8MPa, and then placing the carbon nano tube composite powder into a sintering furnace, and sintering the carbon nano tube composite powder for 3 hours under the argon atmosphere at 615 ℃ to obtain the energy-absorbing reinforcing filler.
The preparation method of the high-toughness environment-friendly pearl cotton section for packaging comprises the following steps:
mixing: weighing LDPE resin material, hydrophobic flame retardant auxiliary agent, single fatty acid glyceride, light calcium carbonate, talcum powder and energy-absorbing reinforcing filler, sequentially adding into a foaming extruder, and uniformly mixing to obtain a mixture a;
foaming extrusion: preheating a foaming extruder to 56 ℃, injecting a foaming agent consisting of mixed gas of n-butane and carbon dioxide by adopting an air pump, heating to a molten state, and extruding through a die opening to obtain a foaming material; the temperature of the die orifice is 116 ℃;
cooling and shaping: after the foaming material is fixed by a clamp, air cooling and shaping at 15 ℃ are carried out to obtain a shaping material;
flattening traction: the sizing material is pressed through flattening equipment to obtain flattened material, and a tractor is used for traction to the next working procedure; the pressing pressure is 1.6MPa, and the traction speed is 7m/min;
deep processing: and bonding a plurality of layers of flattening materials into a specified thickness according to the external dimension of the pearl cotton section finished product and the dimension of the accommodating groove, and cutting by using a slitting and nickel-chromium electrothermal alloy wire to obtain the pearl cotton section finished product with the accommodating groove.
Example 2
The high-toughness environment-friendly pearl cotton profile for packaging is prepared from the following components in parts by weight:1125g of LDPE resin material, 126g of hydrophobic flame retardant auxiliary agent, 55g of single fatty acid glyceride, 14g of light calcium carbonate, 8g of talcum powder, 160g of foaming agent and 10g of energy-absorbing reinforcing filler; wherein the foaming agent is n-butane and carbon dioxide according to the weight ratio of 1.8: 1; the melt index of LDPE resin material is 3g/cm 3 Density of 0.93g/cm 3 。
The preparation method of the hydrophobic flame retardant auxiliary comprises the following steps:
step one, 8.89g of isophorone diisocyanate and 3.16g of dibutyltin dilaurate are added into a four-neck flask equipped with a mechanical stirrer, a condenser tube and a constant pressure dropping funnel, the temperature is raised to 50 ℃ under the protection of nitrogen, 2.5g of bis (trimethylol) propane is added, and after the reaction is carried out under the condition of heat preservation and stirring, the isophorone diisocyanate-CH is detected by TLC 2 Stopping the reaction after the cyanate radical on NCO is completely reacted, dripping 1.05g of diethanolamine into a four-neck flask through a constant pressure dropping funnel, heating to 60 ℃ after the dripping is finished, preserving heat and reacting for 3 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain the polyol multi-branched flame-retardant monomer;
step two, adding 2.22g isophorone diisocyanate and 1.45g dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 2.72g dodecafluoro heptanol, stirring and reacting for 2 hours, heating to 70 ℃, and detecting isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate ester group on NCO is reacted completely, adding 1.16g of trimethylol phosphorus oxide dissolved in acetone, stirring and reacting for 5 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a phosphorus-containing fluorine-containing polymer;
adding 6.28g of isophorone diisocyanate and 1.57g of dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 5.28g of phosphorus-containing fluoropolymer, reacting for 3 hours, heating to 60 ℃, adding 10.53g of polyol multi-branched flame-retardant monomer dissolved in acetone, reacting for 8 hours, and adding deionized water to obtain the hydrophobic flame-retardant auxiliary agent with 50% of solid content.
The preparation method of the energy-absorbing reinforcing filler comprises the following steps:
step one, adding 47g of fumed silica powder, 10g of diatomite and 570g of zirconia grinding balls into a stainless steel ball grinding tank, adding 420g of absolute ethyl alcohol, filling argon, ball-milling for 3 hours at a rotating speed of 600rpm, and vacuum-drying the ball grinding materials at 90 ℃ to obtain an adsorption filler;
adding 100mL of absolute ethyl alcohol into a beaker, adding 10.6g of multi-wall carbon nano tube and 2.8g of polyethylene glycol dispersing agent, uniformly mixing and stirring, and performing ultrasonic treatment for 48min to obtain multi-wall carbon nano tube dispersion; slowly adding 18g of adsorption filler into the multiwall carbon nanotube dispersion liquid, stirring at 80 ℃ until absolute ethyl alcohol is completely volatilized, and drying to constant weight to obtain carbon nanotube composite powder;
and thirdly, cold pressing the carbon nano tube composite powder for 5min by adopting the pressure of 6MPa, and then placing the carbon nano tube composite powder into a sintering furnace, and sintering the carbon nano tube composite powder for 3 hours at the temperature of 587 ℃ under the argon atmosphere to obtain the energy-absorbing reinforcing filler.
The preparation method of the high-toughness environment-friendly pearl cotton profile for packaging in the embodiment is different from that in the embodiment 1 in that the temperature of a die opening is 118 ℃ during foaming extrusion; during cooling shaping, air cooling shaping at 16 ℃ is adopted to obtain a shaping material; the pressing pressure during flattening traction is 2MPa, and the traction speed is 6m/min.
Example 3
The high-toughness environment-friendly pearl cotton profile for packaging is prepared from the following components in parts by weight: 982g of LDPE resin material, 72g of hydrophobic flame retardant auxiliary agent, 27g of single fatty acid glyceride, 9g of light calcium carbonate, 6g of talcum powder, 127g of foaming agent and 7g of energy-absorbing reinforcing filler; wherein the foaming agent is n-butane and carbon dioxide according to the weight ratio of 2: 1; the melt index of LDPE resin is 4.6g/cm 3 Density of 0.93g/cm 3 。
The preparation method of the hydrophobic flame retardant auxiliary comprises the following steps:
step one, 8.89g of isophorone diisocyanate and 3.79g of dibutyltin dilaurate are added into a four-neck flask equipped with a mechanical stirrer, a condenser tube and a constant pressure dropping funnel, the temperature is raised to 50 ℃ under the protection of nitrogen, 2.5g of bis (trimethylol) propane is added, and after the reaction is carried out under the condition of heat preservation and stirring, the isophorone diisocyanate-CH is detected by TLC 2 Cyanate group reaction on NCOStopping the reaction after the reaction is completed, dripping 1.05g of diethanolamine into a four-neck flask through a constant pressure dropping funnel, heating to 60 ℃ after the dripping is completed, preserving heat and reacting for 3 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain the polyol multi-branched flame-retardant monomer;
step two, adding 2.22g isophorone diisocyanate and 2.53g dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 2.82g dodecafluoro heptanol, stirring for 2 hours, heating to 70 ℃, and detecting isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate ester group on NCO is reacted completely, adding 1.16g of trimethylol phosphorus oxide dissolved in acetone, stirring and reacting for 5 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a phosphorus-containing fluorine-containing polymer;
step three, adding 8.87g of isophorone diisocyanate and 2.78g of dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding 7.25g of phosphorus-containing fluoropolymer, reacting for 3 hours, heating to 60 ℃, adding 14.58g of polyol multi-branched flame-retardant monomer dissolved in acetone, reacting for 8 hours, and adding deionized water to obtain the hydrophobic flame-retardant auxiliary agent with 50% of solid content.
The preparation method of the energy-absorbing reinforcing filler comprises the following steps:
adding 41g of fumed silica powder, 10g of diatomite and 510g of zirconia grinding balls into a stainless steel ball grinding tank, adding 287g of absolute ethyl alcohol, filling argon, ball-milling for 3 hours at a rotating speed of 430rpm, and vacuum-drying the ball grinding material at 90 ℃ to obtain an adsorption filler;
adding 83mL of absolute ethyl alcohol into a beaker, adding 11.7g of multi-wall carbon nano tube and 3g of polyethylene glycol dispersing agent, uniformly mixing and stirring, and performing ultrasonic treatment for 36min to obtain multi-wall carbon nano tube dispersion; slowly adding 18g of adsorption filler into the multiwall carbon nanotube dispersion liquid, stirring at 80 ℃ until absolute ethyl alcohol is completely volatilized, and drying to constant weight to obtain carbon nanotube composite powder;
and thirdly, cold pressing the carbon nano tube composite powder for 5min by adopting the pressure of 10MPa, and then placing the carbon nano tube composite powder into a sintering furnace to sinter the carbon nano tube composite powder for 3 hours under the argon atmosphere at 630 ℃ to obtain the energy-absorbing reinforcing filler.
The preparation method of the high-toughness environment-friendly pearl cotton profile for packaging in the embodiment is different from that in the embodiment 1 in that the temperature of a die opening is 112 ℃ during foaming extrusion; during cooling shaping, air cooling shaping at 12 ℃ is adopted to obtain a shaping material; the pressing pressure during flattening traction is 1.2MPa, and the traction speed is 6m/min.
Comparative example 1
The packaging high-toughness environment-friendly pearl cotton section bar of the comparative example and the preparation method thereof are different from the example 1 in that the hydrophobic flame retardant auxiliary agent is replaced by trimethylol phosphorus oxide.
Comparative example 2
The packaging high-toughness environment-friendly pearl cotton section bar of the comparison example and the preparation method thereof are different from the example 1 in that the energy-absorbing reinforcing filler is replaced by a multi-wall carbon nano tube.
Comparative example 3
The packaging high-toughness environment-friendly pearl cotton section bar of the comparative example and the preparation method thereof are different from the example 1 in that the foaming agent adopts n-butane.
Performance testing
The environment-friendly pearl cotton profiles prepared in examples 1-3 and comparative examples 1-3 are respectively cut into samples with the dimensions of 10mm multiplied by 2mm, the tensile strength and the elongation at break are tested by a conventional universal material tester under the conditions of the temperature of 25+/-2 ℃ and the relative humidity of 50%, and the test results are shown in the following table after the test results are baked in an oven at 80 ℃ for 1 hour, the reduction rate of the tensile strength and the elongation at break is tested by a limit oxygen index tester ASTMD2863 test method:
as can be seen from the test results of the table, the pearl cotton section bar prepared by the embodiment of the invention is superior to the control example in tensile strength and elongation at break index, and shows that the tensile resistance and toughness are stronger; the reduction rate of tensile strength and the reduction rate of elongation at break after baking for 1h at 80 ℃ in an oven are smaller than the control rate, and the reduction of tensile resistance and toughness after heat treatment is less, thus showing that the heat-resistant stability is better; higher limiting oxygen index indicates better heat and flame resistance. In comparative example 1, as the hydrophobic flame retardant auxiliary is replaced by the trimethylol phosphorus oxide, the compatibility with LDPE resin material can not be improved, and the flame retardance, the hydrophobicity and the thermal stability of the pearl cotton section bar are obviously improved after foaming extrusion, so that the thermal stability and the flame retardance of the pearl cotton section bar are obviously reduced; in comparative example 2, the energy-absorbing reinforcing filler is replaced by the multiwall carbon nanotube, so that the effects of promoting the compactness of the carbon nanotube composite powder and improving the tensile strength cannot be achieved, and the tensile strength and the elongation at break are obviously reduced; in comparative example 3, the blowing agent was replaced by n-butane, which is a compound gas of n-butane and carbon dioxide, so that the inert flame retardant effect of carbon dioxide could not be achieved, and various properties after foaming were slightly reduced.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The high-toughness environment-friendly pearl cotton profile for packaging is characterized by being prepared by mixing, foaming extrusion, cooling shaping, flattening traction and deep processing of the following components in parts by weight: 95-113 parts of LDPE resin material, 7-13 parts of hydrophobic flame retardant auxiliary agent, 2-6 parts of single fatty glyceride, 0.8-1.5 parts of light calcium carbonate, 0.5-1 part of talcum powder, 10-22 parts of foaming agent and 0.6-1.3 parts of energy absorption reinforcing filler; wherein the foaming agent is n-butane and carbon dioxide according to the weight ratio of 1-2: 1; the melt index range of the LDPE resin material is 2-5 g/cm 3 The density is 0.91-0.93 g/cm 3 。
2. The high-toughness environment-friendly pearl wool profile for packaging according to claim 1, wherein the preparation method of the hydrophobic flame retardant auxiliary comprises the following steps:
step one, adding isophorone diisocyanate and dibutyltin dilaurate into a four-neck flask equipped with a mechanical stirrer, a condenser tube and a constant pressure dropping funnel, heating to 50 ℃ under the protection of nitrogen, adding bis (trimethylol) propane, and then carrying out heat preservation and stirring reaction to detect isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate radical on NCO is completely reacted, dropwise adding diethanolamine into a four-neck flask through a constant-pressure dropping funnel, heating to 60 ℃ after the dropwise adding is finished, preserving heat and reacting for 3 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain a polyol multi-branched flame-retardant monomer;
step two, adding isophorone diisocyanate and dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding dodecafluoro heptanol, stirring and reacting for 2 hours, heating to 70 ℃, and detecting isophorone diisocyanate-CH by TLC 2 Stopping the reaction after the cyanate ester group on NCO is reacted completely, adding acetone-dissolved trimethylol phosphorus oxide, stirring and reacting for 5 hours, washing with acetone, and distilling at 80 ℃ under reduced pressure to remove low-boiling components to obtain phosphorus-containing materialA fluoropolymer;
adding isophorone diisocyanate and dibutyltin dilaurate into a four-necked flask, heating to 50 ℃ under the protection of nitrogen, adding a phosphorus-containing fluorine-containing polymer, reacting for 3 hours, heating to 60 ℃, adding an acetone-dissolved polyol multi-branched flame-retardant monomer, reacting for 8 hours, and adding deionized water to obtain the hydrophobic flame-retardant auxiliary agent with the solid content of 50%.
3. The high-toughness environment-friendly pearl wool profile for packaging according to claim 2, wherein in the step one, the molar ratio of isophorone diisocyanate to dibutyltin dilaurate, bis (trimethylol) propane and diethanolamine is 4:0.03 to 0.06:1:1, a step of; in the step II, the molar ratio of isophorone diisocyanate to dibutyltin dilaurate, dodecafluoro-heptanol and trimethylol phosphorus oxide is 1: 0.02-0.04: 0.8-1: 0.8-1; in the third step, the mass ratio of isophorone diisocyanate to dibutyltin dilaurate, the phosphorus-containing fluorine-containing polymer and the polyol multi-branched flame-retardant monomer is 6-9: 1-3: 4-9: 8-15.
4. The packaging high-toughness environment-friendly pearl wool section according to claim 1, wherein the preparation method of the energy-absorbing reinforcing filler comprises the following steps:
step one, fumed silica powder, diatomite and zirconia grinding balls are mixed according to a ball-to-material ratio of 10:1, adding the mixture into a stainless steel ball grinding tank, adding absolute ethyl alcohol with the mass of 6-10 times of that of fumed silica powder, filling argon, ball-milling for 3 hours at the rotating speed of 400-600 rpm, and vacuum drying the ball grinding material at 90 ℃ to obtain an adsorption filler;
adding 80-100 mL of absolute ethyl alcohol into a beaker, adding the multiwall carbon nanotube and a polyethylene glycol dispersing agent, uniformly mixing and stirring, and performing ultrasonic treatment for 30-50 min to obtain multiwall carbon nanotube dispersing liquid; slowly adding the adsorption filler into the multiwall carbon nanotube dispersion liquid, stirring at 80 ℃ until absolute ethyl alcohol is completely volatilized, and drying until the absolute ethyl alcohol is constant in weight to obtain carbon nanotube composite powder;
and thirdly, cold pressing the carbon nano tube composite powder for 5min by adopting the pressure of 5-10 MPa, placing the carbon nano tube composite powder into a sintering furnace, and sintering the carbon nano tube composite powder for 3 hours at the temperature of 580-630 ℃ in an argon atmosphere to obtain the energy-absorbing reinforcing filler.
5. The high-toughness environment-friendly pearl wool profile for packaging according to claim 4, wherein in the first step, the mass ratio of fumed silica powder to diatomite is 3-5: 1, a step of; in the second step, the dosage ratio of the multiwall carbon nanotube to the polyethylene glycol dispersing agent to the adsorption filler is 8-12 g: 2-3 g: 10-18 g.
6. The method for preparing the high-toughness environment-friendly pearl wool profile for packaging according to any one of claims 1 to 5, which is characterized by comprising the following steps:
mixing: weighing LDPE resin material, hydrophobic flame retardant auxiliary agent, single fatty acid glyceride, light calcium carbonate, talcum powder and energy-absorbing reinforcing filler, sequentially adding into a foaming extruder, and uniformly mixing to obtain a mixture a;
foaming extrusion: preheating a foaming extruder to 50-60 ℃, injecting a foaming agent consisting of mixed gas of n-butane and carbon dioxide by using an air pump, heating to a molten state, and extruding through a die opening to obtain a foaming material;
cooling and shaping: after the foaming material is fixed by a clamp, air cooling and shaping are carried out at the temperature of 12-16 ℃ to obtain a shaping material;
flattening traction: the sizing material is pressed through flattening equipment to obtain flattened material, and a tractor is used for traction to the next working procedure;
deep processing: and bonding a plurality of layers of flattening materials into a specified thickness according to the external dimension of the pearl cotton section finished product and the dimension of the accommodating groove, and cutting by using a slitting and nickel-chromium electrothermal alloy wire to obtain the pearl cotton section finished product with the accommodating groove.
7. The method for preparing the high-toughness environment-friendly pearl wool profile for packaging according to claim 6, wherein the temperature of the die opening is 110-120 ℃; the pressing pressure is 1-2 MPa, and the traction speed is 5-8 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104853.9A CN116082736A (en) | 2023-02-13 | 2023-02-13 | High-toughness environment-friendly pearl cotton section bar for packaging and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050836A (en) * | 2010-12-20 | 2011-05-11 | 武汉金磷化工科技有限责任公司 | Phosphorus-containing polyisocyanate and preparation method thereof |
| CN103113651A (en) * | 2013-01-25 | 2013-05-22 | 安徽省长城汽车内饰件有限责任公司 | Method for producing high-foaming EPE pearl wool by use of carbon dioxide foaming agent |
| CN109485977A (en) * | 2018-11-27 | 2019-03-19 | 华东理工大学 | A kind of EPE pearl wool material and preparation method thereof |
| CN114409863A (en) * | 2022-01-28 | 2022-04-29 | 万华节能科技(烟台)有限公司 | Trihydroxymethyl phosphine oxide modified isocyanate compound and synthesis method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050836A (en) * | 2010-12-20 | 2011-05-11 | 武汉金磷化工科技有限责任公司 | Phosphorus-containing polyisocyanate and preparation method thereof |
| CN103113651A (en) * | 2013-01-25 | 2013-05-22 | 安徽省长城汽车内饰件有限责任公司 | Method for producing high-foaming EPE pearl wool by use of carbon dioxide foaming agent |
| CN109485977A (en) * | 2018-11-27 | 2019-03-19 | 华东理工大学 | A kind of EPE pearl wool material and preparation method thereof |
| CN114409863A (en) * | 2022-01-28 | 2022-04-29 | 万华节能科技(烟台)有限公司 | Trihydroxymethyl phosphine oxide modified isocyanate compound and synthesis method thereof |
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Application publication date: 20230509 |