CN116410440B - Hydrophilic antibacterial sponge and preparation method thereof - Google Patents
Hydrophilic antibacterial sponge and preparation method thereof Download PDFInfo
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- CN116410440B CN116410440B CN202310345280.9A CN202310345280A CN116410440B CN 116410440 B CN116410440 B CN 116410440B CN 202310345280 A CN202310345280 A CN 202310345280A CN 116410440 B CN116410440 B CN 116410440B
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- Prior art keywords
- polyether polyol
- hydrophilic
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- sponge
- antibacterial
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 113
- 238000002360 preparation method Methods 0.000 title abstract description 18
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 93
- 229920000570 polyether Polymers 0.000 claims abstract description 93
- 229920005862 polyol Polymers 0.000 claims abstract description 91
- 150000003077 polyols Chemical class 0.000 claims abstract description 91
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- 239000012948 isocyanate Substances 0.000 claims abstract description 34
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 34
- 229920002545 silicone oil Polymers 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- HZAXFHJVJLSVMW-UHFFFAOYSA-N monoethanolamine hydrochloride Natural products NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 18
- -1 ethanolamine quaternary ammonium salt Chemical class 0.000 claims abstract description 14
- 150000001412 amines Chemical class 0.000 claims description 26
- 239000012974 tin catalyst Substances 0.000 claims description 26
- 238000005187 foaming Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 23
- YXJUEYDETJCBKA-UHFFFAOYSA-N bis(2-hydroxyethyl)azanium;dihydrogen phosphate Chemical compound OP(O)(O)=O.OCCNCCO YXJUEYDETJCBKA-UHFFFAOYSA-N 0.000 claims description 13
- 229920001451 polypropylene glycol Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- IXAZNYYEGLSHOS-UHFFFAOYSA-N 2-aminoethanol;phosphoric acid Chemical compound NCCO.OP(O)(O)=O IXAZNYYEGLSHOS-UHFFFAOYSA-N 0.000 claims description 5
- MKHVZQXYWACUQC-UHFFFAOYSA-N bis(2-hydroxyethyl)azanium;dodecyl sulfate Chemical compound OCCNCCO.CCCCCCCCCCCCOS(O)(=O)=O MKHVZQXYWACUQC-UHFFFAOYSA-N 0.000 claims description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 4
- 230000000845 anti-microbial effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003242 anti bacterial agent Substances 0.000 abstract description 15
- 239000003795 chemical substances by application Substances 0.000 abstract description 12
- 230000035699 permeability Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- ROQQLNHLFCKPOQ-UHFFFAOYSA-N 2,4-dioxo-4-pyridin-4-ylbutanoic acid Chemical compound OC(=O)C(=O)CC(=O)C1=CC=NC=C1 ROQQLNHLFCKPOQ-UHFFFAOYSA-N 0.000 description 2
- IQGWPPQNIZBTBM-UHFFFAOYSA-N 2-aminoethanol;sulfuric acid Chemical compound NCCO.OS(O)(=O)=O IQGWPPQNIZBTBM-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 150000002169 ethanolamines Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920013822 aminosilicone Polymers 0.000 description 1
- 150000003863 ammonium salts Chemical group 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical class OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
- 229940043264 dodecyl sulfate Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical group [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
- C08G18/3857—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur having nitrogen in addition to sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/40—High-molecular-weight compounds
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- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/4829—Polyethers containing at least three hydroxy groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
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- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a hydrophilic antibacterial sponge and a preparation method thereof, and belongs to the technical field of sponges. The raw materials for preparing the hydrophilic antibacterial sponge comprise 95 ～ parts of polyether polyol, 40. 40 ～ 45 parts of isocyanate, 2.0. 2.0 ～ 3.0 parts of water, 0.5 ～ 1.5.5 parts of ethanolamine quaternary ammonium salt, 0.5 ～ 1.0 parts of silicone oil and 0.3 ～ 0.4.4 parts of catalyst. According to the hydrophilic antibacterial sponge, the ethanolamine quaternary ammonium salt is added into the formula of the hydrophilic antibacterial sponge to replace a hydrophilic agent and an antibacterial agent which are commonly used for the hydrophilic antibacterial sponge, so that the hydrophilic antibacterial sponge has excellent antibacterial, hydrophilic and air permeability, and meanwhile, the problem of precipitation of the hydrophilic agent and the antibacterial agent is avoided, and the hydrophilic antibacterial sponge also has the advantages of tearing resistance, high tensile strength and the like, and can be used as a medical sponge.
Description
Technical Field
The invention belongs to the technical field of sponges, and particularly relates to a hydrophilic antibacterial sponge and a preparation method thereof.
Background
The sponge on the market at present is generally polyether polyurethane sponge, and the sponge is relatively poor in hydrophilicity and does not have antibacterial performance. In order to solve the problem of poor hydrophilicity of the sponge and improve the antibacterial property of the sponge, a hydrophilic agent (hydrophilic filler) and an antibacterial agent are usually added into the sponge, but when the hydrophilic agent and the antibacterial agent are introduced into the sponge as additives, the hydrophilic agent and the antibacterial agent are easy to separate out, which is not beneficial to human health, and can lead to the decrease of mechanical properties such as tearing resistance, tensile strength and the like of the sponge.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a hydrophilic antibacterial sponge and a preparation method thereof, and aims to solve the problems that the mechanical properties of the sponge are reduced and the health of a human body is not facilitated due to the addition of a hydrophilic agent and an antibacterial agent in the existing hydrophilic antibacterial sponge.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The hydrophilic antibacterial sponge comprises the following components in parts by weight:
95 to 105 parts of polyether polyol, 40 to 45 parts of isocyanate, 2.0 to 3.0 parts of water, 0.5 to 1.5 parts of ethanolamine quaternary ammonium salt, 0.5 to 1.0 parts of silicone oil and 0.3 to 0.4 parts of catalyst.
In the hydrophilic antibacterial sponge, the ethanolamine quaternary ammonium salt comprises one or more of monoethanolamine phosphate, monoethanolamine sulfate, diethanolamine phosphate, diethanolamine sulfate and diethanolamine lauryl sulfate.
In the hydrophilic antibacterial sponge, the polyether polyol comprises:
Polyether polyol A is polypropylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 3000;
Polyether polyol B, wherein the polyether polyol B is polypropylene oxide polyether polyol, the functionality is 2, and the average molecular weight is 2000 or 3000.
In the hydrophilic antibacterial sponge, the weight ratio of the polyether polyol A to the polyether polyol B is 1:0.8-2.0.
In the hydrophilic antibacterial sponge, the polyether polyol comprises:
Polyether polyol A is polypropylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 3000;
Polyether polyol C, which is polyethylene oxide/propylene oxide polyether polyol with functionality of 3 and average molecular weight of 4000.
In the hydrophilic antibacterial sponge, the weight ratio of the polyether polyol A to the polyether polyol C is 1:0.8-1.2.
In the hydrophilic antibacterial sponge, the silicone oil is silicone oil JD-3810.
In the hydrophilic antibacterial sponge, the catalyst comprises an amine catalyst and a tin catalyst; the ratio of the amine catalyst to the tin catalyst is 1.4:1 in parts by weight.
The invention also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
s001, adding polyether polyol, ethanolamine salt, silicone oil, a catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
The beneficial effects are that:
The invention provides a hydrophilic antibacterial sponge and a preparation method thereof, wherein ethanolamine quaternary ammonium salt is added into a formula of the hydrophilic antibacterial sponge to replace a hydrophilic agent and an antibacterial agent commonly used for the hydrophilic antibacterial sponge, so that the hydrophilic antibacterial sponge has excellent antibacterial, hydrophilic and air permeability properties, and meanwhile, the problem of precipitation of the hydrophilic agent and the antibacterial agent is avoided, and the hydrophilic antibacterial sponge also has the advantages of tearing resistance, strong tensile strength and the like, and can be used as a medical sponge.
Detailed Description
The invention provides a hydrophilic antibacterial sponge and a preparation method thereof, and the invention is further described in detail in the following examples in order to make the purposes, technical schemes and effects of the invention clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
95 to 105 parts of polyether polyol, 40 to 45 parts of isocyanate, 2.0 to 3.0 parts of water, 0.5 to 1.5 parts of ethanolamine quaternary ammonium salt, 0.5 to 1.0 parts of silicone oil and 0.3 to 0.4 parts of catalyst.
In the raw materials of the hydrophilic antibacterial sponge, the ethanolamine quaternary ammonium salt is ammonium salt generated by the reaction of ethanolamine and acid, has positively charged quaternary ammonium ion groups, can be dissolved in water, and meanwhile, the positively charged quaternary ammonium ion groups can be adsorbed on the surfaces of negatively charged microorganisms to form micro-groups and gather on cell walls, so that a room resistance effect is generated, the growth of microorganisms is inhibited, and the antibacterial effect is further realized; in addition, the ethanolamine quaternary ammonium salt has a long carbon chain structure, and the long carbon chain structure is hydrophobic and can act with hydrophilic groups of microorganisms, so that the permeability of cell membranes is changed, the cell membranes of the microorganisms are broken, the cell structure is damaged, and the antibacterial effect can be achieved.
Therefore, in order to solve the problems that the mechanical properties of the sponge are reduced and the sponge is unfavorable for human health due to the addition of the hydrophilic agent and the antibacterial agent in the existing hydrophilic antibacterial sponge, the ethanolamine quaternary ammonium salt is added in the formula to replace the hydrophilic agent and the antibacterial agent commonly used for the hydrophilic antibacterial sponge, so that the hydrophilic antibacterial sponge has excellent antibacterial, hydrophilic and air permeability properties, and meanwhile, the problem that the hydrophilic agent and the antibacterial agent are separated out does not occur, and the hydrophilic antibacterial sponge also has the advantages of tearing resistance, strong tensile strength and the like and can be used as a medical sponge.
In a preferred embodiment, the quaternary ammonium salt of ethanolamine comprises one or more of monoethanolamine phosphate, monoethanolamine sulfate, diethanolamine phosphate, diethanolamine sulfate, diethanolamine lauryl sulfate. The carbon chains of the ethanolamine quaternary ammonium salt are straight chains, and the branched chains on the carbon chains are less, so that the movement of the high polymer is not greatly hindered, and the mechanical properties such as the tensile strength of the sponge can be improved. In addition, the antibacterial property and mechanical property of the ethanolamine quaternary ammonium salt can be improved along with the increase of the carbon chain length to a certain extent.
In a preferred embodiment, the hydrophilic antimicrobial sponge, the polyether polyol comprises:
Polyether polyol A is polypropylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 3000;
Polyether polyol B, wherein the polyether polyol B is polypropylene oxide polyether polyol, the functionality is 2, and the average molecular weight is 2000 or 3000.
Because the crosslinking density can be reduced when the polypropylene oxide polyether polyol with low functionality reacts with isocyanate, the hydrophilic antibacterial sponge has higher flexibility and ductility, and the polypropylene oxide polyether polyol with low functionality and the polypropylene oxide polyether polyol with high functionality are matched for use, so that the tear resistance, tensile strength and other mechanical properties of the hydrophilic antibacterial sponge are improved.
The invention discovers that the mechanical property of the hydrophilic antibacterial sponge is gradually improved along with the increase of the usage amount of the low-functionality polyether polyol, but the elasticity of the hydrophilic antibacterial sponge is reduced when the hydrophilic antibacterial sponge is too flexible after the usage amount of the low-functionality polyether polyol is increased to a certain degree. Preferably, in the invention, when the ratio of the polyether polyol A to the polyether polyol B in parts by weight is 1:0.8-2.0, the mechanical property of the prepared hydrophilic antibacterial sponge is optimal.
In another embodiment of the polyether polyol, the hydrophilic antibacterial sponge comprises:
Polyether polyol A is polypropylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 3000;
Polyether polyol C, which is polyethylene oxide/propylene oxide polyether polyol with functionality of 3 and average molecular weight of 4000.
In this example, the polyether polyol C has both EO segments and PO segments, since the EO segments are flexible and urethane bonds resulting from the reaction of the EO segments with NCO in isocyanate are more likely to form hydrogen bonds, thereby making the hydrophilic antibacterial sponge exhibit better tensile strength. In addition, the chain segment generated by the reaction of the polyether polyol with higher molecular weight and isocyanate is long, so that the hydrophilic antibacterial sponge has higher flexibility and ductility. Based on the mechanism, the polypropylene oxide polyether polyol with the functionality of 3 and the molecular weight of 3000 is matched with the polyethylene oxide/propylene oxide polyether polyol with the functionality of 3 and the molecular weight of 4000, so that the hydrophilic antibacterial sponge is good in molding effect and excellent in tear resistance, tensile strength and other mechanical properties.
The invention discovers that when the dosage of polyether polyol with high molecular weight or polyether polyol containing EO chain segments is increased, the mechanical property of the hydrophilic antibacterial sponge can be improved, but after the dosage of polyether polyol is increased to a certain degree, the hydrophilic antibacterial sponge is too flexible, but the elasticity of the hydrophilic sponge is reduced. Preferably, in the invention, the proportion of the polyether polyol A and the polyether polyol C is 1:0.8-1.2.
In a preferred embodiment, the silicone oil is silicone oil JD-3810. The silicone oil JD-3810 is polyether modified amino silicone oil, can be used for homogenizing and stabilizing foam holes in the foam process of the sponge, and can also improve the hydrophilic performance of the hydrophilic antibacterial sponge.
In a preferred embodiment, the catalyst comprises an amine catalyst and a tin catalyst; the tin catalyst is stannous octoate, which is used for promoting the crosslinking reaction of isocyanate and polyether polyol; the amine catalyst is triethanolamine, which mainly promotes the reaction of isocyanate and water and promotes the foaming effect. Through the combined action of the amine catalyst and the tin catalyst, the reaction speed can be increased, the polyurethane resin chain growth can be accelerated, and the compactness and uniformity of air holes in the sponge can be improved, so that the hydrophilic antibacterial sponge with the density meeting the use requirement can be obtained. Preferably, when the weight ratio of the amine catalyst to the tin catalyst is 1.4:1, the hydrophilic antibacterial sponge with the density of about 35kg/m 3 and good elasticity can be obtained.
In addition, the invention also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol, ethanolamine salt, silicone oil, catalyst and water into a stirring kettle, uniformly premixing, and controlling the temperature in the stirring kettle to 26-27 ℃; after evenly mixing for 3-4 s, pouring isocyanate preheated to 26-27 ℃ into a stirring kettle, and stirring for 3-5 s to obtain a mixed material;
S002, pouring the mixed material into a mould for foaming, wherein the foaming temperature is 26-27 ℃, the milk white time is 10-15 s, and the gas discharge (gas generation) time is 100s, so as to prepare the hydrophilic antibacterial sponge.
The preparation method provided by the invention is simple and efficient, and the polyether polyol and other raw materials are completely and uniformly mixed and then react with the isocyanate by controlling the time of adding the isocyanate into the stirring kettle, so that the occurrence of defective products caused by unstable reaction of the hydrophilic antibacterial sponge is avoided. By controlling the adding temperature of isocyanate, the catalytic activity of isocyanate is optimized, the full reaction of the flame-retardant sound-insulation sponge system is promoted, and the prepared hydrophilic antibacterial sponge has excellent physical properties. The foaming temperature is controlled at 26-27 ℃, if the foaming temperature is too low, insufficient reaction can be caused, the physical properties of the hydrophilic antibacterial sponge are affected, if the foaming temperature is too high, unstable reaction process can be caused, and the properties of the hydrophilic antibacterial sponge can not be accurately controlled.
In order to further clarify the hydrophilic antibacterial sponge and the preparation method provided by the invention, the following examples and comparative examples are provided.
Example 1
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
105 parts of polyether polyol A, 45 parts of isocyanate, 3.0 parts of water, 1.5 parts of diethanolamine phosphate, 0.23 part of silicone oil JD-3810 parts of amine catalyst and 0.17 part of tin catalyst.
The embodiment also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol A, diethanolamine phosphate, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Example 2
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
105 parts of polyether polyol A, 45 parts of isocyanate, 3.0 parts of water, 1.5 parts of monoethanolamine phosphate, 0.23 part of silicone oil JD-3810 parts of amine catalyst and 0.17 part of tin catalyst.
The embodiment also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
s001, adding polyether polyol A, monoethanolamine phosphate, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Example 3
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
105 parts of polyether polyol A, 45 parts of isocyanate, 3.0 parts of water, 1.5 parts of diethanolamine lauryl sulfate, silicone oil JD-3810 parts, 0.23 part of amine catalyst and 0.17 part of tin catalyst.
The embodiment also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol A, lauryl sulfuric acid diethanolamine salt, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Example 4
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
100 parts of polyether polyol A, 42 parts of isocyanate, 2.5 parts of water, 1 part of diethanolamine phosphate, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
This example also provides a method for preparing the same hydrophilic antibacterial sponge as in example 1.
Example 5
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
95 parts of polyether polyol A, 40 parts of isocyanate, 2.0 parts of water, 0.5 part of diethanolamine phosphate, 0.5 part of silicone oil JD-3810, 0.18 part of amine catalyst and 0.12 part of tin catalyst.
This example also provides a method for preparing the same hydrophilic antibacterial sponge as in example 1.
Example 6
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
55 parts of polyether polyol A, 45 parts of polyether polyol B, 42 parts of isocyanate, 2.5 parts of water, 1.0 part of diethanolamine phosphate, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
The embodiment also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
s001, adding polyether polyol A, polyether polyol B, diethanolamine phosphate, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Example 7
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
35 parts of polyether polyol A, 65 parts of polyether polyol B, 42 parts of isocyanate, 2.5 parts of water, 1.0 part of diethanolamine phosphate, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
This example also provides a method for preparing the same hydrophilic antibacterial sponge as in example 6.
Example 8
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
55 parts of polyether polyol A, 45 parts of polyether polyol C, 42 parts of isocyanate, 2.5 parts of water, 1.0 part of diethanolamine phosphate, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
The embodiment also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol A, polyether polyol C, diethanolamine phosphate, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Example 9
The embodiment provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
40 parts of polyether polyol A, 60 parts of polyether polyol C, 42 parts of isocyanate, 2.5 parts of water, 1.0 part of diethanolamine phosphate, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
This example also provides a method for preparing the same hydrophilic antibacterial sponge as in example 9.
Comparative example 1
The comparative example provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
100 parts of polyether polyol A, 42 parts of isocyanate, 2.5 parts of water, 0.8 part of silicone oil JD-3810, 0.2 part of amine catalyst and 0.14 part of tin catalyst.
The comparative example also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol A, silicone oil JD-3810, an amine catalyst, a tin catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mould for foaming to prepare the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
Comparative example 2
The comparative example provides a hydrophilic antibacterial sponge, which comprises the following components in parts by weight:
100 parts of polyether polyol A, 42 parts of isocyanate, 2.5 parts of water, silicone oil JD-3810.8 parts, 0.2 part of amine catalyst, 0.14 part of tin catalyst, 1.0 part of hydrophilic filler (light calcium) and 1.0 part of nano zinc oxide antibacterial agent.
The comparative example also provides a preparation method of the hydrophilic antibacterial sponge, which comprises the following steps:
S001, adding polyether polyol A, silicone oil JD-3810, an amine catalyst, a tin catalyst, a hydrophilic filler (light calcium), a nano zinc oxide antibacterial agent and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mould for foaming to prepare the hydrophilic antibacterial sponge.
Further, in step S002, the foaming temperature is 26℃to 27 ℃.
The hydrophilic antibacterial sponges prepared in examples 1 to 9 and comparative examples 1 to 2 were respectively measured for density, tensile strength, indentation hardness, water absorption capacity, and antibacterial property, and the test results are shown in table 1 below. Wherein, the hydrophilic antibacterial sponge is measured according to the specification of the measurement of the apparent density of the GB/T6343-2009 foam plastic, the tensile strength is measured according to the specification of the measurement of the tensile strength and the elongation at break of the GB/T6344-2008 soft foam polymer material, the collapse hardness is measured according to the specification of the measurement of the hardness (collapse method) of the GB/T10807-2006 soft foam polymer material, and the antibacterial performance is measured according to the evaluation of the antibacterial performance of textiles, part 2: the absorption method is defined and measured.
Water absorption measurement rule: the hydrophilic antibacterial sponges prepared in examples 1 to 9 and comparative examples 1 to 2 were cut into 50mm×50mm×10mm sizes, the mass m0 of the polyurethane soft foam material was accurately weighed with an electronic balance, then submerged in water for 30min, taken out, and the foam was suspended for 1min and then weighed as mass m1, and the water absorption ratio= (m 1-m 0)/m 0.
TABLE 1
As can be seen from the results in Table 1, the antibacterial properties and the hydrophilic properties of the hydrophilic antibacterial sponges prepared in examples 1 to 9 are obviously superior to those of comparative example 1, and the antibacterial properties and the hydrophilic properties of the hydrophilic antibacterial sponges prepared in comparative example 2 are also superior to those of comparative example 1 because the hydrophilic filler and the nano zinc oxide antibacterial agent are added in the formula, so that the improved hydrophilic antibacterial sponges can have excellent antibacterial properties and hydrophilic properties without using the conventional hydrophilic agents and antibacterial agents.
The tensile strength of the hydrophilic antibacterial sponge prepared in example 3 is higher than that of the hydrophilic antibacterial sponge prepared in examples 1 and 2 because of the longer carbon chain length in the diethanolamine salt of lauryl sulfate. The hydrophilic antibacterial sponges prepared in examples 6 to 9 were lower in indentation hardness than the other examples because the prepared hydrophilic antibacterial sponges were better in flexibility and the hydrophilic antibacterial sponges were reduced in elasticity.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.
Claims (5)
1. The hydrophilic antibacterial sponge is characterized by comprising the following components in parts by weight:
95. 95 ～ 105 parts of polyether polyol, 40. 40 ～ 45 parts of isocyanate, 2.0. 2.0 ～ 3.0.0 parts of water, 0.5. 0.5 ～ 1.5.5 parts of ethanolamine quaternary ammonium salt, 0.5. 0.5 ～ 1.0 parts of silicone oil and 0.3. 0.3 ～ 0.4.4 parts of catalyst;
The ethanolamine quaternary ammonium salt comprises one or more of monoethanolamine phosphate, diethanolamine phosphate and diethanolamine lauryl sulfate;
the polyether polyol comprises polyether polyol A and polyether polyol B, wherein the weight ratio of the polyether polyol A to the polyether polyol B is 1:0.8-2.0;
The polyether polyol comprises polyether polyol A and polyether polyol C, wherein the weight ratio of the polyether polyol A to the polyether polyol C is 1:0.8-1.2;
The polyether polyol A is polypropylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 3000;
The polyether polyol B is polypropylene oxide polyether polyol, the functionality is 2, and the average molecular weight is 2000 or 3000;
the polyether polyol C is polyethylene oxide/propylene oxide polyether polyol, the functionality is 3, and the average molecular weight is 4000.
2. The hydrophilic antimicrobial sponge of claim 1 wherein the silicone oil is silicone oil JD-3810.
3. The hydrophilic antimicrobial sponge of claim 1, wherein the catalyst comprises an amine catalyst and a tin catalyst; the ratio of the amine catalyst to the tin catalyst is 1.4:1 in parts by weight.
4.A method of preparing a hydrophilic antimicrobial sponge according to any one of claims 1 to 3, comprising the steps of:
s001, adding polyether polyol, ethanolamine quaternary ammonium salt, silicone oil, a catalyst and water into a stirring kettle, uniformly mixing, and then adding isocyanate for stirring to obtain a mixture;
S002, pouring the mixed material into a mold for foaming to obtain the hydrophilic antibacterial sponge.
5. The method for producing a hydrophilic antibacterial sponge according to claim 4, wherein in step S002, the foaming temperature is 26 ℃ to 27 ℃.
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