CN115558263A - Bacteriostatic paper diaper with high air permeability and preparation method thereof - Google Patents
Bacteriostatic paper diaper with high air permeability and preparation method thereof Download PDFInfo
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- CN115558263A CN115558263A CN202211206340.0A CN202211206340A CN115558263A CN 115558263 A CN115558263 A CN 115558263A CN 202211206340 A CN202211206340 A CN 202211206340A CN 115558263 A CN115558263 A CN 115558263A
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- paper diaper
- bacteriostatic
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- 230000035699 permeability Effects 0.000 title claims abstract description 51
- 230000003385 bacteriostatic effect Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- -1 polyethylene Polymers 0.000 claims abstract description 49
- 239000004698 Polyethylene Substances 0.000 claims abstract description 36
- 230000002902 bimodal effect Effects 0.000 claims abstract description 36
- 229920000573 polyethylene Polymers 0.000 claims abstract description 36
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 32
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 32
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000004712 Metallocene polyethylene (PE-MC) Substances 0.000 claims abstract description 24
- 239000007822 coupling agent Substances 0.000 claims abstract description 24
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 19
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- 239000000155 melt Substances 0.000 claims abstract description 17
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 10
- 239000004626 polylactic acid Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 239000003607 modifier Substances 0.000 claims description 18
- 230000000844 anti-bacterial effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 229920005615 natural polymer Polymers 0.000 claims description 15
- 239000002861 polymer material Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 14
- 229920001661 Chitosan Polymers 0.000 claims description 7
- 229920002488 Hemicellulose Polymers 0.000 claims description 7
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 claims description 7
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 7
- 239000008116 calcium stearate Substances 0.000 claims description 7
- 235000013539 calcium stearate Nutrition 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 229910052622 kaolinite Inorganic materials 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 7
- JKBYAWVSVVSRIX-UHFFFAOYSA-N octadecyl 2-(1-octadecoxy-1-oxopropan-2-yl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)SC(C)C(=O)OCCCCCCCCCCCCCCCCCC JKBYAWVSVVSRIX-UHFFFAOYSA-N 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 238000009998 heat setting Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 10
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 239000002028 Biomass Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000008204 material by function Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 9
- 230000002706 hydrostatic effect Effects 0.000 description 7
- 238000001878 scanning electron micrograph Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- FFZQJAHBHYRHSU-UHFFFAOYSA-N 2-hydroxy-1,3,2$l^{5}-dioxaphosphinane 2-oxide Chemical compound OP1(=O)OCCCO1 FFZQJAHBHYRHSU-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000012982 microporous membrane Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 150000004760 silicates Chemical class 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- VYNIJDDOANQDDJ-UHFFFAOYSA-N ethene phosphorous acid Chemical compound C=C.C=C.C=C.OP(O)O VYNIJDDOANQDDJ-UHFFFAOYSA-N 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
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- 238000001000 micrograph Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/044—Micropores, i.e. average diameter being between 0,1 micrometer and 0,1 millimeter
-
- 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
- C08J2207/00—Foams characterised by their intended use
- C08J2207/12—Sanitary use, e.g. diapers, napkins or bandages
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/14—Hemicellulose; Derivatives thereof
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- 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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Abstract
The invention discloses a bacteriostatic paper diaper with high air permeability and a preparation method thereof, belonging to the technical field of novel functional materials, wherein the paper diaper comprises: polylactic acid: 40-70 parts; modified bimodal polyethylene: 20-50 parts; metallocene polyethylene: 0-20 parts of a solvent; high density polyethylene: 0-10 parts; pore-forming agent: 40-60 parts; silver-carrying antibacterial agent: 0-20 parts of; coupling agent: 0.1 to 1.2 portions; lubricant: 0.1 to 1.2 portions; antioxidant: 0.1 to 1.0 portion; according to the invention, the nano zirconia is used for carrying out doping modification treatment on the bimodal polyethylene, so that the tensile strength and flexibility of the paper diaper are improved; the biomass fibers and other components are adopted to generate synergistic effect in the melt extrusion process, so that good air permeability and degradability are realized; in the process of preparing the bacteriostatic paper diaper with high air permeability, a pore-forming agent and a small amount of silver-loaded antibacterial agent are added, so that the air permeability and the bacteriostatic property of the paper diaper are improved.
Description
Technical Field
The invention belongs to the field of novel functional materials, and particularly relates to a bacteriostatic diaper with high air permeability and a preparation method thereof.
Background
Along with the continuous promotion of the market on the requirements of baby sanitary materials, the baby diaper also meets the single functions of leakage prevention and urine absorption from the beginning, the improvement is that the leakage prevention urine absorption and the ventilation and the antibiosis are improved, the waistline has multiple functions such as telescopic elasticity and three-dimensional leakage prevention partition edges, and the like, and a large amount of researches are carried out on the structure and the performance of the baby diaper at home and abroad for further meeting the high-quality living requirements of people, and the researches comprise the action mechanism and the liquid absorption process of each hierarchical structure, the application of non-woven materials, the contact comfort and the antibiosis and the like.
At present, the market of the baby diapers in China is in a fast growth period, the market development potential is very large, but the market share of the domestic diapers is low, in recent years, along with the domestic brand following the market trend, the safety and comfort of baby skin-friendly products are highly concerned, the baby skin-friendly products are gradually accepted by consumers, and the market share is gradually improved, so that the improvement of the performance of the diapers in the preparation of the diapers becomes a hotspot of future research, and the prior art has the following problems:
a: compared with developed countries, the process for preparing the paper diaper starts later, so that at present, china pays more attention to how to realize the function of efficient leakage-proof urine absorption in the paper diaper process, but lacks the attention to the degradable air permeability of the material;
b: the prior art can prepare the paper diaper, but the paper diaper has poor performance, is too thick and heavy, has limited use and cannot meet wide market requirements;
c: the following problems mainly exist with respect to the performance of the diaper: the air permeability and the water leakage resistance are poor, the antibacterial property is poor, the skin-friendly property and the degradability are poor, and the toughness and the tensile strength are poor;
d: although some prior art can be put into mass production for paper diapers at present, the tensile strength of the paper diapers is reduced on the premise of realizing high air permeability, and the situation that a baby is easily torn when the paper diapers are used is easily caused, so that the effects of high air permeability and tensile strength improvement cannot be realized.
Disclosure of Invention
Aiming at the situation, aiming at overcoming the defects of the prior art, the invention provides an antibacterial paper diaper with high air permeability and a preparation method thereof, aiming at solving the problems of poor air permeability and water leakage resistance, poor antibacterial property, poor skin-friendly property and degradability and poor toughness and tensile strength of the existing paper diaper, the invention provides the antibacterial paper diaper with high air permeability, and the fusion intercalation technology is utilized to carry out doping modification treatment on bimodal polyethylene by using a nano zirconia material, so that the compounding of a polymer and an inorganic substance on a nano scale is realized, and the tensile strength and the flexibility of the paper diaper are further improved; meanwhile, the biomass fibers and other components are adopted to generate synergistic effect in the melt extrusion process, so that the softness of the paper diaper is improved, and good air permeability and degradability are realized; the pore-forming agent is added in the process of preparing the bacteriostatic paper diaper with high air permeability, and the main component of the pore-forming agent is CaCO 3 During the stretching process, due to CaCO 3 The binding force between the particles and the surrounding polymers is small, micropores are generated by edge separation, and finally the microporous membrane is formed after shaping treatment, as the diameter of liquid molecules is larger than that of the microporous membrane, the liquid molecules are retained in the paper diaper without leakage, and gas molecules with small diameter can diffuse to the outside, so that the air permeability of the paper diaper is increased, the paper diaper has good flexibility and waterproofness, and has the strength and the air permeability of the non-woven material; in addition, in order to improve the antibacterial property of the paper diaper, a small amount of silver-carrying antibacterial agent is added, so that the paper diaper has stronger antibacterial property, the breeding of bacteria can be reduced, and the infant morbidity is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the invention provides a bacteriostatic diaper with high air permeability, which comprises the following raw materials in parts by weight:
polylactic acid: 40-70 parts;
modified bimodal polyethylene: 20-50 parts;
metallocene polyethylene: 0-20 parts of a solvent;
high density polyethylene: 0-10 parts;
pore-forming agent: 40-60 parts;
silver-carrying antibacterial agent: 0-20 parts of a solvent;
coupling agent: 0.1 to 1.2 portions;
lubricant: 0.1 to 1.2 portions;
antioxidant: 0.1 to 1.0 portion.
Preferably, the paper diaper comprises the following raw materials in parts by weight:
polylactic acid: 50-60 parts;
modified bimodal polyethylene: 30-45 parts of a solvent;
metallocene polyethylene: 8-15 parts;
high density polyethylene: 3-8 parts;
pore-forming agent: 45-55 parts of a solvent;
silver-carrying antibacterial agent: 8-15 parts;
coupling agent: 0.2 to 1.0 portion;
lubricant: 0.4 to 0.8 portion;
antioxidant: 0.2 to 0.5 portion.
Further, the modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 40-50 parts;
nano zirconia: 1-5 parts;
natural polymer material: 3-6 parts;
ultra-dispersed coupling modifier: 3-6 parts;
compound antioxidant: 2 to 6 portions.
Preferably, the bimodal polyethylene has a density of from 0.9 to 0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the natural polymer material has the effects of sanitation, non-toxicity and skin-friendly property, the ultra-dispersed coupling modifier is JL-G05FL, and the composite antioxidant is antioxidant 1098 and antioxidant 168 according to the weight ratio of 1:2 weight ofAnd (4) specific composition.
Further, the melt flow rate of the metallocene polyethylene is 2.5-3.5g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 118-129 ℃, the crystallization temperature is 107-116 ℃, the melt flow rate of the high-density polyethylene is 0.5-1.5g/10min under the condition of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicate, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite material, the silver-carrying antibacterial agent has better water absorption and air permeability, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, triethylene phosphite and dioctadecyl thiodipropionate.
The invention also provides a bacteriostatic paper diaper with high air permeability and a preparation method thereof, and the preparation method comprises the following steps:
the method comprises the following steps: adding the paper diaper raw materials into a high-speed mixer to mix for 5-15min;
step two: putting the uniformly mixed material prepared in the step one into a double-screw extruder for mixing and extruding, wherein the extrusion temperature of each extrusion interval in the double-screw extruder is 150-170 ℃, 170-185 ℃, 175-185 ℃, 180-190 ℃, 180-195 ℃ and 185-200 ℃ respectively;
step three: stretching the film extruded in the step two in a two-way two-step method, wherein the stretching ratio is 1.5-3;
step four: and (4) performing heat setting treatment on the film stretched in the third step to obtain the high-breathability antibacterial diaper.
The invention with the structure has the following beneficial effects:
(1) According to the bacteriostatic diaper with high air permeability and the preparation method thereof, the fusion intercalation technology is utilized to carry out doping modification treatment on the bimodal polyethylene by using the nano zirconia material, so that the compounding of a polymer and an inorganic substance on a nano scale is realized, and the tensile strength and the flexibility of the diaper are further improved;
(2) According to the invention, the biomass fibers and other components are adopted to generate synergistic effect in the melt extrusion process, so that the softness of the paper diaper is improved, and good air permeability and degradability are realized;
(3) The pore-forming agent is added in the process of preparing the bacteriostatic paper diaper with high air permeability, and the main component of the pore-forming agent is CaCO 3 During the stretching process, due to CaCO 3 The binding force of the particles and the surrounding polymer is small, micropores are generated by separation at the edge, and finally the microporous membrane is formed after shaping treatment, as the diameter of liquid molecules is larger than that of the microporous membrane, the liquid molecules are retained in the paper diaper without leakage, and gas molecules with small diameter can diffuse to the outside, so that the air permeability of the paper diaper is increased, and the paper diaper has good flexibility and waterproofness and has the strength and air permeability of a non-woven material;
(4) In order to improve the antibacterial property of the paper diaper, a small amount of silver-carrying antibacterial agent is added to ensure that the paper diaper has stronger antibacterial property, so that the breeding of bacteria can be reduced, and the infant morbidity is reduced.
Drawings
FIG. 1 is a Fourier transform infrared spectrogram of a bacteriostatic diaper with high air permeability provided by the invention;
FIG. 2 is a scanning electron micrograph of a diaper manufactured in example 1 of the present invention;
FIG. 3 is a scanning electron micrograph of a diaper manufactured in example 2 of the present invention;
FIG. 4 is a scanning electron micrograph of a diaper manufactured in example 3 of the present invention;
FIG. 5 is a scanning electron micrograph of a diaper manufactured in example 4 of the present invention;
FIG. 6 is a scanning electron micrograph of a diaper manufactured in example 5 of the present invention;
FIG. 7 is a scanning electron micrograph of a diaper manufactured in comparative example 1 according to the present invention;
FIG. 8 is a scanning electron micrograph of a diaper according to comparative example 2 of the present invention;
fig. 9 is a scanning electron microscope image of the diaper manufactured in comparative example 3 of the present invention.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the examples of the present invention, unless otherwise specified, it is understood that the raw materials and the treatment techniques are all conventional and commercially available raw materials and conventional treatment techniques in the art.
Example 1
The invention provides an antibacterial paper diaper with high air permeability, which comprises the following materials:
polylactic acid: 55 parts of (1);
modified bimodal polyethylene: 30 parts of (1);
metallocene polyethylene: 15 parts of (1);
high density polyethylene: 8 parts of a mixture;
pore-foaming agent: 45 parts of (1);
silver-carrying antibacterial agent: 8 parts of a mixture;
coupling agent: 0.5 part;
lubricant: 0.6 part;
antioxidant: 0.3 part.
The modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 40 parts of a mixture;
nano zirconia: 1 part;
natural polymer material: 4 parts;
ultra-dispersed coupling modifier: 3 parts of a mixture;
compound antioxidant: 5 parts of the raw materials.
Wherein the density of the bimodal polyethylene is 0.9-0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the ultra-dispersion coupling modifier is JL-G05FL, the composite antioxidant is antioxidant 1098 and antioxidant 168, and the weight ratio is 1:2 in weight ratio.
The melt flow rate of the metallocene polyethylene is 2.5g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 118 ℃, the crystallization temperature is 107 ℃, the melt flow rate of the high-density polyethylene is 0.5g/10min under the condition of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicates, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite materials, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, trimethylene phosphate and dioctadecyl thiodipropionate.
The invention also provides a bacteriostatic diaper with high air permeability and a preparation method thereof, and the preparation method comprises the following steps:
the method comprises the following steps: adding the paper diaper raw materials into a high-speed mixer to mix for 5-15min;
step two: putting the uniformly mixed material prepared in the step one into a double-screw extruder for mixing and extruding, wherein the extrusion temperature of each extrusion interval in the double-screw extruder is 150-170 ℃, 170-185 ℃, 175-185 ℃, 180-190 ℃, 180-195 ℃ and 185-200 ℃ respectively;
step three: stretching the film extruded in the step two by a two-way two-step method, wherein the stretching ratio is 1.5-3;
step four: and (4) performing heat setting treatment on the film stretched in the third step to obtain the high-breathability antibacterial diaper.
Example 2
The invention provides an antibacterial paper diaper with high air permeability, which comprises the following materials:
polylactic acid: 55 parts of (1);
modified bimodal polyethylene: 33 parts of (B);
metallocene polyethylene: 15 parts of a mixture;
high density polyethylene: 8 parts of a mixture;
pore-forming agent: 47 parts of;
silver-carrying antibacterial agent: 10 parts of (A);
coupling agent: 0.5 part;
lubricant: 0.6 part;
antioxidant: 0.3 part.
The modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 42 parts of (A);
nano zirconia: 2 parts of (1);
natural polymer material: 4 parts of a mixture;
ultra-dispersed coupling modifier: 3.5 parts;
compound antioxidant: 5 parts of the raw materials.
Wherein the density of the bimodal polyethylene is 0.9-0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the ultra-dispersion coupling modifier is JL-G05FL, the composite antioxidant is antioxidant 1098 and antioxidant 168, and the weight ratio is 1:2 in weight ratio.
The melt flow rate of the metallocene polyethylene is 2.8g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 120 ℃, the crystallization temperature is 110 ℃, the melt flow rate of the high-density polyethylene is 0.8g/10min under the condition of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicates, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite materials, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, trimethylene phosphate and dioctadecyl thiodipropionate.
Example 3
The invention provides an antibacterial paper diaper with high air permeability, which comprises the following materials:
polylactic acid: 55 parts of a binder;
modified bimodal polyethylene: 37 parts of;
metallocene polyethylene: 15 parts of (1);
high density polyethylene: 8 parts of a mixture;
pore-forming agent: 49 parts;
silver-carrying antibacterial agent: 12 parts of (1);
coupling agent: 0.5 part;
lubricant: 0.6 part;
antioxidant: 0.3 part.
The modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 44 parts of a mixture;
nano zirconia: 3 parts of a mixture;
natural polymer materials: 4 parts;
ultra-dispersed coupling modifier: 4 parts of a mixture;
compound antioxidant: 5 parts of the raw materials.
Wherein the bimodal polyethylene has a density of from 0.9 to 0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the ultra-dispersion coupling modifier is JL-G05FL, the composite antioxidant is antioxidant 1098 and antioxidant 168, and the weight ratio is 1:2 in weight ratio.
Wherein the melt flow rate of the metallocene polyethylene is 3.0g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 122 ℃, the crystallization temperature is 112 ℃, the melt flow rate of the high-density polyethylene is 1.0g/10min under the condition of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicates, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite material, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, trimethylene phosphate and dioctadecyl thiodipropionate.
Example 4
The invention provides an antibacterial paper diaper with high air permeability, which comprises the following materials:
polylactic acid: 55 parts of (1);
modified bimodal polyethylene: 41 parts of (1);
metallocene polyethylene: 15 parts of (1);
high density polyethylene: 8 parts of a mixture;
pore-forming agent: 52 parts of a binder;
silver-carrying antibacterial agent: 14 parts of a binder;
coupling agent: 0.5 part;
lubricant: 0.6 part;
antioxidant: 0.3 part.
The modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 47 parts of;
nano zirconia: 4 parts of a mixture;
natural polymer materials: 4 parts of a mixture;
ultra-dispersed coupling modifier: 4.5 parts;
compound antioxidant: 5 parts of the raw materials.
Wherein the density of the bimodal polyethylene is 0.9-0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the ultra-dispersion coupling modifier is JL-G05FL, the composite antioxidant is antioxidant 1098 and antioxidant 168 according to the weight ratio of 1:2 in weight ratio.
Wherein the melt flow rate of the metallocene polyethylene is 3.3g/10min under the conditions of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 125 ℃, the crystallization temperature is 114 ℃, the melt flow rate of the high-density polyethylene is 1.3g/10min under the conditions of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicates, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite materials, and the antioxidant is at least one of tetrapentaerythritol ester, n-octadecyl hydroxy phenylpropionate, tris-phosphite ester and bis-octadecyl thiodipropionate.
Example 5
The invention provides an antibacterial paper diaper with high air permeability, which comprises the following materials:
polylactic acid: 55 parts of (1);
modified bimodal polyethylene: 45 parts of a binder;
metallocene polyethylene: 15 parts of a mixture;
high density polyethylene: 8 parts of a mixture;
pore-forming agent: 55 parts of (1);
silver-carrying antibacterial agent: 15 parts of (1);
coupling agent: 0.5 part;
lubricant: 0.6 part;
antioxidant: 0.3 part.
The modified bimodal polyethylene comprises the following raw materials in parts by weight:
bimodal polyethylene: 50 parts of a mixture;
nano zirconia: 5 parts of a mixture;
natural polymer material: 4 parts of a mixture;
ultra-dispersed coupling modifier: 5 parts of a mixture;
compound antioxidant: 5 parts of the raw materials.
Wherein the density of the bimodal polyethylene is 0.9-0.95g/cm 3 The molecular weight is 150000-1200000, the natural polymer material is at least one of chitosan or hemicellulose, the ultra-dispersion coupling modifier is JL-G05FL, the composite antioxidant is antioxidant 1098 and antioxidant 168, and the weight ratio is 1:2 in weight ratio.
The melt flow rate of the metallocene polyethylene is 3.5g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 129 ℃, the crystallization temperature is 116 ℃, the melt flow rate of the high-density polyethylene is 1.5g/10min under the condition of 190 ℃/2.16kg, the pore-forming agent is one of nano layered silicate, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite material, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, trimethylene phosphate and dioctadecyl thiodipropionate.
Comparative example 1
The comparative example provides a bacteriostatic diaper with high air permeability, which is different from the diaper in example 1 only in that the components do not comprise nano zirconia and a super-dispersion coupling modifier, the nano zirconia and the super-dispersion coupling modifier are distributed into bimodal polyethylene in a reduced amount, the rest components and the component content are the same as those in example 1, and the preparation method is as in example 1.
Comparative example 2
This comparative example provides a bacteriostatic diaper having high air permeability, which is different from example 1 only in that the components do not include a pore-forming agent and a silver-loaded antibacterial agent, the reduced amounts of the pore-forming agent and the silver-loaded antibacterial agent are distributed into high-density polyethylene, the remaining components, the component contents are the same as in example 1, and the preparation method is according to example 1.
Comparative example 3
The comparative example provides a bacteriostatic diaper with high air permeability, which is different from the diaper in example 1 only in that the components of the diaper do not comprise nano zirconia, a super-dispersion coupling modifier, a pore-forming agent and a silver-loaded antibacterial agent, the reduced amounts of the nano zirconia, the super-dispersion coupling modifier, the pore-forming agent and the silver-loaded antibacterial agent are distributed into bimodal polyethylene and high-density polyethylene, the rest components and the component content are the same as those in example 1, and the preparation method is as in example 1.
Performance test
3 test pieces were tested for air permeability, tensile strength, hydrostatic pressure resistance and colony time with reference to the GB/T4744, GB/T1040-1992 standards.
TABLE 1 bacteriostatic diaper with high air permeability and performance of preparation method thereof
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and table 1, the air permeability, tensile strength and hydrostatic pressure resistance of the nonwoven diaper according to the example of the present invention are significantly higher than those of the comparative example, and the number of colonies is significantly lower than that of the comparative example, which shows that the diaper according to the present invention has excellent properties such as high air permeability, tensile strength, hydrostatic pressure resistance, bacteriostatic activity and good flexibility, and can be mass-produced at low cost.
By adopting the preparation method of the paper diaper provided by the invention, the air permeability is 4214.3-6125.6mm/s, the tensile strength is 19.2-42.3MPa, the hydrostatic pressure resistance is 617.4-819.8mm, and the number of colonies is 2.3-237.4cfu/g, wherein the air permeability, the tensile strength, the hydrostatic pressure resistance and the bacterial inhibition of the embodiment 4 are optimal, the air permeability reaches 6125.6mm/s, the tensile strength reaches 42.3MPa, the hydrostatic pressure resistance reaches 819.8mm, and the number of colonies reaches 2.3cfu/g, so that the performance is influenced by adding too much or too little material in a certain amount; the performance of the comparative examples 1, 2 and 3 is poor, and no obvious difference exists, so that the influence of the comprehensive performance of the paper diaper is considered, the paper diaper has better air permeability, tensile strength, hydrostatic pressure resistance and antibacterial activity, the tensile strength is improved on the premise of high air permeability, the production cost is reduced, and the use value is higher.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above, without limitation, and what is shown in the drawings is only one of the embodiments of the invention, and the practical application is not limited thereto. In summary, those skilled in the art should be able to conceive of the present invention without creative design of the similar structural modes and embodiments without departing from the spirit of the present invention, and all such modifications should fall within the protection scope of the present invention.
Claims (10)
1. The bacteriostatic paper diaper with high air permeability is characterized by comprising the following raw materials in parts by weight:
polylactic acid: 40-70 parts;
modified bimodal polyethylene: 20-50 parts;
metallocene polyethylene: 0-20 parts of a solvent;
high density polyethylene: 0-10 parts;
pore-forming agent: 40-60 parts;
silver-carrying antibacterial agent: 0-20 parts of a solvent;
coupling agent: 0.1 to 1.2 portions;
lubricant: 0.1 to 1.2 portions;
antioxidant: 0.1 to 1.0 portion.
2. The bacteriostatic diaper according to claim 1, wherein said diaper comprises the following raw materials (by weight portion):
polylactic acid: 50-60 parts;
modified bimodal polyethylene: 30-45 parts of a solvent;
metallocene polyethylene: 8-15 parts;
high density polyethylene: 3-8 parts;
pore-forming agent: 45-55 parts of a solvent;
silver-carrying antibacterial agent: 8-15 parts;
coupling agent: 0.2 to 1.0 portion;
lubricant: 0.4-0.8 part;
antioxidant: 0.2 to 0.5 portion.
3. The bacteriostatic diaper according to claim 2, wherein the modified bimodal polyethylene comprises the following components in parts by weight:
bimodal polyethylene: 40-50 parts;
nano zirconia: 1-5 parts;
natural polymer materials: 3-6 parts;
ultra-dispersed coupling modifier: 3-6 parts;
compound antioxidant: 2 to 6 portions.
4. The bacteriostatic paper diaper with high air permeability according to claim 3, characterized in that: the density of the bimodal polyethylene is 0.9-0.95g/cm 3 And the molecular weight is 150000-1200000.
5. The bacteriostatic paper diaper with high air permeability according to claim 4, characterized in that: the natural polymer material is at least one of chitosan or hemicellulose, and the ultra-dispersed coupling modifier is JL-G05FL.
6. The bacteriostatic diaper according to claim 5, characterized in that: the composite antioxidant is antioxidant 1098 and antioxidant 168, and the weight ratio of the antioxidant is 1:2 in weight ratio.
7. The bacteriostatic paper diaper with high air permeability according to claim 2, characterized in that: the melt flow rate of the metallocene polyethylene is 2.5-3.5g/10min under the condition of 190 ℃/2.16kg, the melting temperature of the metallocene polyethylene is 118-129 ℃, and the crystallization temperature is 107-116 ℃.
8. The bacteriostatic paper diaper with high air permeability according to claim 7, characterized in that: the melt flow rate of the high-density polyethylene is 0.5-1.5g/10min under the condition of 190 ℃/2.16 kg.
9. The bacteriostatic diaper according to claim 8, characterized in that: the pore-forming agent is one of nano layered silicate, the coupling agent is at least one of silane coupling agent and titanate coupling agent, the lubricant is at least one of calcium stearate and ethylene bis-stearamide, the silver-carrying antibacterial agent is one of nano silver and silver-kaolinite composite material, and the antioxidant is at least one of pentaerythritol ester, n-octadecyl hydroxy phenylpropionate, triphosphite and dioctadecyl thiodipropionate.
10. The preparation method of the bacteriostatic paper diaper with high air permeability as claimed in claim 1, characterized by comprising the following steps:
the method comprises the following steps: adding the paper diaper raw materials into a high-speed mixer to mix for 5-15min;
step two: putting the uniformly mixed material prepared in the first step into a double-screw extruder for mixing and extruding, wherein the extrusion temperatures of all extrusion intervals in the double-screw extruder are 150-170 ℃, 170-185 ℃, 175-185 ℃, 180-190 ℃, 180-195 ℃ and 185-200 ℃ respectively;
step three: stretching the film extruded in the step two by a two-way two-step method, wherein the stretching ratio is 1.5-3;
step four: and (4) performing heat setting treatment on the film stretched in the step three to obtain the high-breathability antibacterial paper diaper.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668689A (en) * | 2002-06-20 | 2005-09-14 | 博里利斯技术公司 | Breathable films |
| CN108623875A (en) * | 2017-03-26 | 2018-10-09 | 合肥杰事杰新材料股份有限公司 | A kind of High-strength air-permeable film composite material and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668689A (en) * | 2002-06-20 | 2005-09-14 | 博里利斯技术公司 | Breathable films |
| CN108623875A (en) * | 2017-03-26 | 2018-10-09 | 合肥杰事杰新材料股份有限公司 | A kind of High-strength air-permeable film composite material and preparation method |
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Application publication date: 20230103 |