CN113024933A - High-toughness pearl wool material and preparation method thereof - Google Patents
High-toughness pearl wool material and preparation method thereof Download PDFInfo
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- CN113024933A CN113024933A CN202110445043.0A CN202110445043A CN113024933A CN 113024933 A CN113024933 A CN 113024933A CN 202110445043 A CN202110445043 A CN 202110445043A CN 113024933 A CN113024933 A CN 113024933A
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- toughness
- foaming
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- pearl cotton
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- 239000000463 material Substances 0.000 title claims abstract description 128
- 238000002360 preparation method Methods 0.000 title claims abstract description 55
- 210000002268 wool Anatomy 0.000 title claims abstract description 21
- 229920000742 Cotton Polymers 0.000 claims abstract description 70
- 238000005187 foaming Methods 0.000 claims abstract description 47
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 239000004005 microsphere Substances 0.000 claims abstract description 22
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 14
- 229920000573 polyethylene Polymers 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 12
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 11
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 7
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 52
- 239000011787 zinc oxide Substances 0.000 claims description 26
- 239000002270 dispersing agent Substances 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000004088 foaming agent Substances 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 7
- 239000002612 dispersion medium Substances 0.000 claims description 7
- 239000002609 medium Substances 0.000 claims description 6
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000005022 packaging material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 34
- 239000011159 matrix material Substances 0.000 description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 19
- 229920000642 polymer Polymers 0.000 description 18
- 239000000203 mixture Substances 0.000 description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 description 11
- 239000001569 carbon dioxide Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 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 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 238000012360 testing method 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
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- RECUKUPTGUEGMW-UHFFFAOYSA-N carvacrol Chemical compound CC(C)C1=CC=C(C)C(O)=C1 RECUKUPTGUEGMW-UHFFFAOYSA-N 0.000 description 1
- HHTWOMMSBMNRKP-UHFFFAOYSA-N carvacrol Natural products CC(=C)C1=CC=C(C)C(O)=C1 HHTWOMMSBMNRKP-UHFFFAOYSA-N 0.000 description 1
- 235000007746 carvacrol Nutrition 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WYXXLXHHWYNKJF-UHFFFAOYSA-N isocarvacrol Natural products CC(C)C1=CC=C(O)C(C)=C1 WYXXLXHHWYNKJF-UHFFFAOYSA-N 0.000 description 1
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
- 238000009827 uniform distribution 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
- C08J9/122—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
- 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
- C08J9/009—Use of pretreated 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
- 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
- C08J2203/08—Supercritical fluid
-
- 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
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the field of pearl cotton, and particularly discloses a high-toughness pearl cotton material and a preparation method thereof, wherein the high-toughness pearl cotton material is prepared by foaming the following substances in parts by weight: 45-50 parts of low-density polyethylene, 6-8 parts of polyethylene particles, 0.75-1.0 part of antioxidant and 6-8 parts of toughening and modifying filler; the toughening modified filler comprises titanium dioxide microsphere particles with the particle size of 1000-2000 meshes. The preparation method comprises the following steps: s1, raw material treatment, S2, blending extrusion, S3, foaming treatment and S4, washing and drying; the high-toughness pearl wool material can be used for packaging and transporting products, can well improve the transportation performance and the service performance of a packaging material, and has good toughness, strength and mechanical properties.
Description
Technical Field
The application relates to the field of pearl cotton, in particular to a high-toughness pearl cotton material and a preparation method thereof.
Background
The expandable polyethylene, also called pearl cotton, has the characteristics of light weight, high recovery rate, excellent performance, good flexibility and the like, has large volume-holding degree on the size of products, and is widely applied to the buffer packaging of various products, particularly the packaging of vulnerable products.
Chinese patent with publication number CN111621075A in the related art discloses a preparation method of pearl wool particles for pillow core materials, which comprises the following steps: (1) uniformly mixing a sodium silicate solution and a sodium bicarbonate solution to prepare a silica gel sol system, and then adding polyvinyl alcohol, tricalcium phosphate, a sodium silicate solution and a sodium bicarbonate solution to obtain a silica gel system; (2) adding cobalt naphthenate and lanthanum nitrate solution into the silica gel system, and reacting to obtain an antibacterial agent; (3) adding low-density high-pressure polyethylene, talcum powder and polylactic resin into an extruder, pumping butane, an antibacterial agent, carvacrol and monoglyceride into the extruder, reacting to form a foaming body, extruding, drawing and cutting the foaming body to obtain pearl cotton, and treating the pearl cotton by a home textile pearl cotton machine to obtain the pearl cotton particles for the pillow inner material.
In view of the above-mentioned related technologies, the inventor believes that the existing pearl cotton material is prepared by foaming polyethylene, and the crystal form of the pearl cotton material is changed due to the foaming of polyethylene, so that the toughness strength and the mechanical property of the pearl cotton material produced by foaming polyethylene are poor.
Disclosure of Invention
In order to overcome the defects of poor toughness strength and mechanical property of the existing pearl cotton material, the application provides a high-toughness pearl cotton material and a preparation method thereof, and the following technical scheme is adopted:
in a first aspect, the application provides a high-toughness pearl cotton material, which is prepared by foaming the following substances in parts by weight: 45-50 parts of low-density polyethylene, 6-8 parts of polyethylene particles, 0.75-1.0 part of antioxidant and 6-8 parts of toughening and modifying filler; the toughening modified filler comprises titanium dioxide microsphere particles with the particle size of 1000-2000 meshes.
By adopting the technical scheme, because the low-density polyethylene and the polyethylene are mixed to be used as the matrix of the material, the crystallization rate of the single low-density polyethylene material is delayed during foaming treatment, so that the rheological property of the foamed material is changed, and the mechanical strength and the toughness of the pearl cotton material are improved;
on the basis, the titanium dioxide microspheres are adopted for toughening modification, the specific surface area of the titanium dioxide microspheres is large, the physical and chemical defects on the surfaces of the titanium dioxide microspheres are more, and the microsphere particles are physically or chemically combined with a polymer chain, so that the strength of a resin matrix is increased, meanwhile, the contact area of the titanium dioxide microsphere particles and the matrix is large, when the material is impacted, more micro-cracks can be generated than that generated when common fillers exist, more impact energy is absorbed, further expansion of cracks is prevented and passivated, and the toughness performance and the mechanical strength of the pearl cotton material are effectively improved.
Further, the high-strength and high-toughness pearl wool material also comprises 10-15 parts by weight of inorganic whiskers, and the length-diameter ratio of the inorganic whiskers is 55-60.
By adopting the technical scheme, because the inorganic whisker is also selected as the toughening modification material, the inorganic whisker can form a skeleton structure in a high polymer, and when the composite material is stressed, the composite material can help the pearl cotton substrate material to bear partial stress, so that the toughness of the pearl cotton material is improved, and the toughness performance and the mechanical strength of the pearl cotton material are effectively improved.
Further, the inorganic whisker is a zinc oxide whisker with a tetrapod-like structure.
By adopting the technical scheme, the structure of the inorganic crystal whisker is optimized, the zinc oxide crystal whisker material with the tetrapod-like structure is used as the toughening modifier, the tetrapod-like crystal whisker material is different from a one-dimensional straight fiber structure, the phenomenon of fiber disorder caused by the flow of a polymer melt in the blending process of the zinc oxide crystal whisker material and the polymer can be effectively avoided, the zinc oxide crystal whisker fiber with the tetrapod-like structure is oriented, stretched and impacted to be perpendicular to the flow direction of the melt, and the entanglement structure of the crystal whisker material in the material is improved, so that the structural performance of the pearl cotton material is further optimized, and the toughness performance and the mechanical strength of the pearl cotton material are improved.
In a second aspect, the present application provides a method for preparing a high toughness type pearl cotton material, wherein the preparation method of the high toughness type pearl cotton material comprises the following steps: s1, raw material treatment: stirring and mixing low-density polyethylene, polyethylene particles, an antioxidant, a toughening and modifying filler and inorganic whiskers according to a formula, collecting a mixed material S2, blending and extruding: adding the mixed materials into an extruder, carrying out melt blending and adjusting the temperature of each zone of the extruder 1-7 to be: extruding and granulating at 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 160 ℃, and collecting extruded granules; s3, foaming treatment: mixing the extruded granules, a dispersing medium and a dispersing agent, adding a foaming agent, heating and pressurizing, and carrying out foaming treatment; s4, washing and drying: after foaming treatment, collecting the foaming material, washing with deionized water, and naturally drying to obtain the high-toughness pearl cotton material.
By adopting the technical scheme, the raw materials are mixed and blended firstly, the raw materials formed after blending have good structural performance and mechanical strength, the structural performance of the base material is optimized, and then foaming treatment is carried out on the base material, so that the formed pearl cotton material has more excellent toughness strength due to the fact that the structure of the base material is adjusted, meanwhile, the pearl cotton material prepared by the scheme is simple, and the preparation efficiency is improved while the mechanical strength of the pearl cotton is effectively improved.
Further, the raw material treatment in step S1 further includes a zinc oxide whisker surface activation treatment, and the zinc oxide whisker surface activation treatment step includes: s11, respectively weighing 45-50 parts by weight of deionized water, 80-90 parts by weight of absolute ethyl alcohol, 3-5 parts by weight of silane coupling agent and 20-30 parts by weight of zinc oxide whisker, and stirring and mixing to obtain a mixed solution; and S12, adding hydrochloric acid into the mixed solution, adjusting the pH value to 4.5, standing for 8 hours, filtering, collecting a filter cake, washing, drying, and drying and activating at 145 ℃ for 6-8 hours to prepare the surface-activated zinc oxide whisker.
By adopting the technical scheme, because the surface of the zinc oxide whisker is activated, the surface energy of the zinc oxide whisker subjected to activation treatment is effectively reduced, and the strong polarity of the surface of the zinc oxide whisker is improved, so that the compatibility and the interaction activity between the pearl cotton matrix and the filler are improved, the zinc oxide whisker can be uniformly and stably dispersed in the pearl cotton matrix, the zinc oxide whisker is prevented from agglomerating in the matrix, and the toughness and the mechanical strength of the pearl cotton material are further improved.
Further, the dispersion medium in step S2 is deionized water, and the mass ratio of the dispersant to the dispersion medium to the extruded pellets is: dispersion medium: the dispersant is 3-5: 15-20: 1.
By adopting the technical scheme, the mixing component of the dispersing agent, the dispersing medium and the extruded granules is optimized, so that the extruded granules can be effectively dispersed in the dispersing medium, and the dispersing agent is effectively coated on the surfaces of the extruded granules, thereby further improving the surface dispersibility of the extruded granules and further improving the surface performance of the matrix material.
Further, the foaming agent in step S3 is CO2。
By adopting the technical scheme, because the carbon dioxide is selected as the raw material for foaming treatment, the condition that the carbon dioxide reaches the supercritical state is mild and easy to realize, and the carbon dioxide is high in solubility in the polymer and high in nucleation density, the formed cells are small in size and uniform in distribution, and good diffusion is formed in the matrix material, so that the pearl cotton material prepared by foaming has excellent structural performance and pore structure, and the toughness and mechanical strength of the pearl cotton material are further improved.
Further, the foaming process of step S3 includes:
s31, adding the dispersing agent, the dispersing medium and the extruded granules into a reaction kettle, and adding CO2The foaming agent is added until the pressure of the reaction kettle is 2MPa, the foaming temperature is adjusted to 145 ℃, and the foaming treatment is carried out for 20min under the condition of heat preservation and pressure maintaining.
By adopting the technical scheme, because the foaming temperature and pressure are optimized, the solubility of the pearl wool foaming matrix to carbon dioxide is improved through the foaming treatment of heat preservation and pressure maintaining, and CO is enabled2Gas more easily enters the polymer matrix, so that the foaming is more thorough, the foaming temperature is optimized in the kettle, the foaming temperature is improved, the gas diffusion rate of the foaming agent among molecular chains is effectively increased, the gas diffusion towards the bubble nucleus direction is facilitated, the utilization rate of the foaming agent is improved, the volume of the bubble and the polymer are increasedThe expansion ratio further improves the uniformity and the toughness strength of the prepared pearl cotton material.
Further, the dispersant in the step S3 is sodium polyacrylate with the molecular weight of 6000-8000.
Through adopting above-mentioned technical scheme, because this application has optimized the polyacrylic acid sodium of molecular weight 6000 ~ 8000 as the dispersant, because this dispersant has good dispersion on the one hand, can form good disperse system, on the other hand, this dispersant that this application adopted can effectively be got rid of on subsequent processing to effectively improved the preparation efficiency in the preparation process, improved the efficiency of production, reduced the cost of production.
In summary, the present application includes at least one of the following beneficial technical effects:
firstly, the low-density polyethylene and the polyethylene are mixed to be used as the matrix of the material, so that the crystallization rate of the single low-density polyethylene material which is simply adopted for foaming is delayed, the rheological property of the foamed material is changed, and the mechanical strength and the toughness of the pearl cotton material are improved;
on the basis, the titanium dioxide microspheres are adopted for toughening modification, the specific surface area of the titanium dioxide microspheres is large, the physical and chemical defects on the surfaces of the titanium dioxide microspheres are more, and the microsphere particles are physically or chemically combined with a polymer chain, so that the strength of a resin matrix is increased, meanwhile, the contact area of the titanium dioxide microsphere particles and the matrix is large, when the material is impacted, more micro-cracks can be generated than that generated when common fillers exist, more impact energy is absorbed, further expansion of cracks is prevented and passivated, and the toughness performance and the mechanical strength of the pearl cotton material are effectively improved.
Secondly, the application also selects the inorganic crystal whisker as a toughening modification material, and the inorganic crystal whisker can form a skeleton structure in a high polymer, so that when the composite material is stressed, the composite material can help the pearl cotton matrix material to bear partial stress, thereby improving the toughness of the pearl cotton material and effectively improving the toughness performance and mechanical strength of the pearl cotton material.
The structure of the inorganic crystal whisker is optimized, the zinc oxide crystal whisker material with a four-needle structure is used as a toughening modifier, the four-needle crystal whisker material is different from a one-dimensional straight fiber structure, so that the phenomenon of fiber disorder caused by the flow of a polymer melt in the blending process of the zinc oxide crystal whisker material and a polymer can be effectively avoided, the zinc oxide crystal whisker fiber with the four-needle structure is oriented, stretched and impacted to be perpendicular to the flow direction of the melt, the entanglement structure of the crystal whisker material in the material is improved, the structural performance of the pearl cotton material is further optimized, and the toughness performance and the mechanical strength of the pearl cotton material are improved.
Fourth, according to the method, the raw materials are mixed and blended, the raw materials formed by blending have good structural performance and mechanical strength, the structural performance of the base material is optimized, and then foaming treatment is carried out on the base material, so that the formed pearl cotton material has more excellent toughness strength due to the fact that the structure of the base material is adjusted, meanwhile, the pearl cotton material prepared by the scheme is simple, and the preparation efficiency is improved while the mechanical strength of the pearl cotton is effectively improved.
Detailed Description
The present application is described in further detail below with reference to preparation examples, examples and comparative examples.
Unless otherwise specified, the starting materials of the examples, comparative examples and comparative examples of the present application are commercially available;
antioxidant: an antioxidant 1010;
silane coupling agent: a silane coupling agent KH 550;
electronic universal tester: MEGA 1510.
Preparation example
Preparation of surface activated zinc oxide whisker
Preparation example 1
Taking 5.0kg of deionized water, 9kg of absolute ethyl alcohol, 0.5kg of silane coupling agent and 3kg of tetrapod-shaped zinc oxide whisker with the length-diameter ratio of 55, stirring and mixing to obtain a mixed solution, adding 0.1mol/L hydrochloric acid into the mixed solution, adjusting the pH to 4.5, standing for 8 hours, filtering and collecting a filter cake, washing and drying, and drying and activating at 145 ℃ for 8 hours to prepare the surface-activated zinc oxide whisker 1.
Preparation example 2
Taking 4.7kg of deionized water, 8kg of absolute ethyl alcohol, 0.4kg of silane coupling agent and 2.5kg of zinc oxide whisker with a tetrapod-like structure and a length-diameter ratio of 57, stirring and mixing to obtain a mixed solution, adding 0.1mol/L of hydrochloric acid into the mixed solution, adjusting the pH value to 4.5, standing for 8 hours, filtering and collecting a filter cake, washing and drying, and drying and activating at 145 ℃ for 7 hours to prepare the surface-activated zinc oxide whisker 2.
Preparation example 3
Taking 5.0kg of deionized water, 9kg of absolute ethyl alcohol, 0.5kg of silane coupling agent and 3kg of tetrapod-shaped zinc oxide whiskers with the length-diameter ratio of 60, stirring and mixing to obtain a mixed solution, adding 0.1mol/L of hydrochloric acid into the mixed solution, adjusting the pH to 4.5, standing for 8 hours, filtering and collecting a filter cake, washing and drying, and drying and activating at 145 ℃ for 8 hours to prepare the surface-activated zinc oxide whiskers 3.
Examples
Example 1
S1, raw material treatment: taking 45kg of low-density polyethylene, 6kg of polyethylene particles, 0.75kg of antioxidant, 6kg of 1000-mesh titanium dioxide microsphere particles and 10kg of surface activated zinc oxide whisker 1, stirring and mixing, and collecting a mixed material;
s2, blending and extruding: adding the mixed materials into an extruder, carrying out melt blending and adjusting the temperature of each zone of the extruder 1-7 to be: extruding and granulating at 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 160 ℃, and collecting extruded granules;
s3, foaming treatment: 3kg of the extruded pellets, 15kg of a dispersion medium and 1kg of sodium polyacrylate with a molecular weight of 6000 were mixed, and CO was added2Foaming agent is added until the pressure of the reaction kettle is 2MPa, the foaming temperature is adjusted to 145 ℃, and the foaming treatment is carried out for 20min under the condition of heat preservation and pressure maintaining;
s4, washing and drying: after foaming treatment, collecting the foaming material, washing with deionized water, and naturally drying to obtain the high-toughness pearl cotton material.
Examples 2 to 5
Examples 2 to 5: the preparation method of the high-toughness pearl cotton material is different from the preparation method of the example 1 in that the addition components of the raw materials in the example are shown in the table 1, and the rest preparation steps and the preparation environment are the same as the example 1.
Table 1 table of the ingredient ratios of the raw materials in examples 1 to 5
Example 6: the preparation method of the high-toughness pearl cotton material is different from the preparation method of the example 1 in that the particle size of the titanium dioxide microsphere particle in the example 6 is 1500 meshes, and the other preparation schemes and the material composition are the same as those in the example 1.
Example 7: the preparation method of the high-toughness pearl cotton material is different from the preparation method of the example 1 in that the particle size of the titanium dioxide microsphere particle in the example 7 is 2000 meshes, and the other preparation schemes and the material composition are the same as those in the example 1.
Example 8: the preparation method of the high-toughness pearl cotton material is different from the preparation method of the example 1 in that the molecular weight of the sodium polyacrylate of the example 8 is 7000, and the rest preparation scheme and the material composition are the same as the example 1.
Example 9: the preparation method of the high-toughness pearl wool material is different from the preparation method of the example 1 in that the molecular weight of the sodium polyacrylate of the example 9 is 8000, and the other preparation schemes and the material composition are the same as those of the example 1.
Comparative example
Comparative example 1: the preparation method of the high-toughness pearl cotton material is different from that of the example 1 in that the 1000-mesh zinc oxide particles are adopted in the comparative example 1 to replace the titanium dioxide microsphere particles in the example 1, and the rest preparation schemes and material compositions are the same as those in the example 1.
Comparative example 2: the preparation method of the high-toughness pearl wool material is different from that of the embodiment 1 in that the particle size of the titanium dioxide microsphere particle adopted in the comparative example 2 is 500 meshes, and the other preparation schemes and the material composition are the same as those of the embodiment 1.
Comparative example 3: the preparation method of the high-toughness pearl wool material is different from that of the embodiment 1 in that the particle size of the titanium dioxide microsphere particle adopted in the comparative example 3 is 3000 meshes, and the other preparation schemes and the material composition are the same as those of the embodiment 1.
Comparative example 4: the preparation method of the high-toughness pearl wool material is different from that of the embodiment 1 in that in a comparative example 4, carbon fiber with the length-diameter ratio of 55 is adopted to replace the surface activated zinc oxide whisker 1 in the embodiment 1, and the other preparation schemes and material compositions are the same as those in the embodiment 1.
Comparative example 5: the preparation method of the high-toughness pearl cotton material is different from the example 1 in that the zinc oxide whiskers without surface activation adopted in the comparative example 5 replace the zinc oxide whiskers 1 with surface activation in the example 1, and the rest of the preparation scheme and the material composition are the same as those in the example 1.
Comparative example 6: the preparation method of the high-toughness pearl cotton material is different from that of the example 1 in that an extruder is adopted to extrude and foam in the comparative example 6, the foaming agent is azodicarbonamide, and the other preparation schemes and material compositions are the same as those of the example 1.
Comparative example 7: the preparation method of the high-toughness pearl wool material is different from the preparation method of the example 1 in that dichlorodifluoromethane is adopted as a foaming agent to perform physical foaming in a comparative example 7 instead of carbon dioxide in the example 1, and the rest preparation scheme and the material composition are the same as those in the example 1.
Comparative example 8: the preparation method of the high-toughness pearl cotton material is different from that of the example 1 in that the comparative example 8 adopts an inorganic dispersant talcum powder instead of the dispersant adopted in the example 1, and the rest preparation scheme and material composition are the same as those of the example 1.
Comparative examples
Comparative example 1: the preparation method of the high-toughness pearl cotton material is different from the preparation method of the example 1 in that the comparative example 1 is not added with inorganic whiskers, and the rest preparation scheme and the material composition are the same as the example 1.
Performance test
The pearl cotton prepared in examples 1 to 9, comparative examples 1 to 8 and comparative example 1 were subjected to performance tests, respectively.
Detection method/test method
The prepared pearl cotton is taken and cut into a sample, a V-shaped notch is manufactured on an QYJ type notch type sampling machine, the notch depth is 2.5mm, the residual thickness after the notch is removed is 10mm, the curvature radius of the tip of the notch is 0.25mm, the processed notch sample is placed at the temperature of an impact laboratory for 12 mm, and then the impact strength of the processed notch sample is tested on an XJU-22 type impact tester. Each group of test sample bands are averaged, and the specific test results are shown in table 2 below:
TABLE 2 Performance test Table
Performance analysis was performed from table 2 above:
(1) the proportion of the components in the embodiments 1-9 is combined with table 2, so that the pearl cotton prepared by the method has good impact strength, the pearl cotton material prepared by the embodiments has good toughness, and the technical scheme of the method adopts the mixture of the low-density polyethylene and the polyethylene as the matrix of the material, so that the mechanical strength and the toughness of the pearl cotton material are improved.
(2) The performance of comparative examples 1-3 is compared with that of example 1, and as the components of the added toughening particles are changed in the comparative examples 1-3, the performance is remarkably reduced as can be seen from table 2, which indicates that the technical scheme of the application adopts titanium dioxide microspheres for toughening modification, and the strength of the resin matrix is increased by physical or chemical combination of the microsphere particles and the polymer chains, and meanwhile, the contact area of the titanium dioxide microsphere particles and the matrix is large, when the material is impacted, more micro-cracks are generated compared with that generated when common fillers exist, and more impact energy is absorbed, so that the further expansion of cracks is prevented and passivated, and the toughness performance and the mechanical strength of the pearl wool material are effectively improved.
(3) The comparison is carried out by combining the comparative examples 4-5 with the example 1, and the toughness strength is reduced as shown in the table 2, which shows that the zinc oxide whisker material with the tetrapod-like structure is adopted as the toughening modifier in the technical scheme of the application, and the four-needle-like whisker material can prevent the fiber orientation caused by the flow of the polymer melt in the blending process of the one-dimensional straight fiber and the polymer from being along the melt flow direction, and the whisker fiber orientation with the tetrapod-like structure is stretched and impacted to be perpendicular to the melt flow direction, so that the entanglement structure of the whisker material in the material is improved, thereby further optimizing the structural performance of the pearl cotton material and improving the toughness performance and the mechanical strength of the pearl cotton material.
(4) The comparison is carried out by combining the comparative examples 6-7 with the example 1, and the toughness performance is reduced as shown in the table 2, which shows that the technical scheme of the application selects carbon dioxide as the raw material for foaming treatment, because the carbon dioxide achieves a supercritical state and has mild conditions and is easy to realize, because the carbon dioxide has high solubility and high nucleation density in a polymer, the formed cells have small size and uniform distribution, and good diffusion is formed in the matrix material, so that the pearl cotton material prepared by foaming has excellent structural performance and pore structure, the toughness performance and mechanical strength of the pearl cotton material are further improved, the foaming temperature and pressure are optimized, and through the foaming treatment of heat preservation and pressure preservation, the solubility of the pearl cotton foaming matrix to the carbon dioxide and the CO are improved2The gas can enter the polymer matrix more easily, so that the foaming is more thorough, the utilization rate of the foaming agent is improved, the volume of the foam holes and the expansion ratio of the polymer are increased, and the uniformity and the toughness strength of the prepared pearl cotton material are further improved.
(5) In comparison with comparative example 8 and example 1, the comparative example 8 adjusts the type of the dispersant, and as can be seen from table 2, the toughness performance is not good, which indicates that the sodium polyacrylate selected by the technical scheme of the application has good dispersing performance.
(6) Comparing the comparative example 1 with the example 1, the comparative example 1 does not have the inorganic whisker, and the data of the comparative example 1 is combined, so that the technical scheme of the application can be further explained to select the inorganic whisker as the toughening modification material, and the inorganic whisker can form a skeleton structure in a high polymer, so that when the composite material is stressed, the composite material can help the pearl cotton matrix material to bear partial stress, thereby improving the toughness of the pearl cotton material, and effectively improving the toughness performance and mechanical strength of the pearl cotton material.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The high-toughness pearl wool material is characterized by being prepared by foaming the following substances in parts by weight:
45-50 parts of low-density polyethylene;
6-8 parts of polyethylene particles;
0.75-1.0 part of antioxidant;
6-8 parts of toughening and modifying filler; the toughening modified filler comprises titanium dioxide microsphere particles with the particle size of 1000-2000 meshes.
2. The high-toughness pearl wool material according to claim 1, further comprising 10-15 parts by weight of inorganic whiskers, wherein the aspect ratio of the inorganic whiskers is 55-60.
3. The high-toughness pearl wool material as claimed in claim 2, wherein said inorganic whiskers are zinc oxide whiskers with a tetrapod-like structure.
4. The preparation method of the high-toughness pearl wool material is characterized by comprising the following steps:
s1, raw material treatment: stirring and mixing low-density polyethylene, polyethylene particles, an antioxidant, a toughening and modifying filler and inorganic crystal whiskers according to a formula, and collecting a mixed material;
s2, blending and extruding: adding the mixed materials into an extruder, carrying out melt blending and adjusting the temperature of each zone of the extruder 1-7 to be: extruding and granulating at 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 160 ℃, and collecting extruded granules;
s3, foaming treatment: mixing the extruded granules, a dispersing medium and a dispersing agent, adding a foaming agent, heating and pressurizing, and carrying out foaming treatment;
s4, washing and drying: after foaming treatment, collecting the foaming material, washing with deionized water, and naturally drying to obtain the high-toughness pearl cotton material.
5. The method for preparing high-toughness pearl wool material according to claim 4, wherein the raw material treatment of step S1 further comprises a zinc oxide whisker surface activation treatment, and the zinc oxide whisker surface activation treatment step comprises:
s11, respectively weighing 45-50 parts by weight of deionized water, 80-90 parts by weight of absolute ethyl alcohol, 3-5 parts by weight of silane coupling agent and 20-30 parts by weight of zinc oxide whisker, and stirring and mixing to obtain a mixed solution;
and S12, adding hydrochloric acid into the mixed solution, adjusting the pH value to 4.5, standing for 8 hours, filtering, collecting a filter cake, washing, drying, and drying and activating at 145 ℃ for 6-8 hours to prepare the surface-activated zinc oxide whisker.
6. The method for preparing the high-toughness pearl wool material according to claim 4, wherein the dispersion medium in step S2 is deionized water, and the mass ratio of the dispersing agent to the dispersion medium to the extruded pellets is as follows: dispersion medium: the dispersant is 3-5: 15-20: 1.
7. The method for preparing high toughness pearl wool material according to claim 4, wherein said foaming agent in step S3 is CO2。
8. The method for preparing high toughness pearl wool material according to claim 4, wherein the foaming process of step S3 comprises:
s31, adding the dispersing agent, the dispersing medium and the extruded granules into a reaction kettle, and adding CO2The foaming agent is added until the pressure of the reaction kettle is 2MPa, the foaming temperature is adjusted to 145 ℃, and the foaming treatment is carried out for 20min under the condition of heat preservation and pressure maintaining.
9. The method for preparing the high-toughness pearl wool material according to claim 4, wherein the dispersant in the step S3 is sodium polyacrylate with molecular weight of 6000-8000.
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