CN114213703A - Mildew-proof composite elastomer - Google Patents
Mildew-proof composite elastomer Download PDFInfo
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- CN114213703A CN114213703A CN202111633722.7A CN202111633722A CN114213703A CN 114213703 A CN114213703 A CN 114213703A CN 202111633722 A CN202111633722 A CN 202111633722A CN 114213703 A CN114213703 A CN 114213703A
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- Prior art keywords
- elastomer
- mildew
- oligosaccharin
- amino
- derivative
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 36
- 239000000806 elastomer Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000741 silica gel Substances 0.000 claims abstract description 13
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 230000003449 preventive effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 229920002545 silicone oil Polymers 0.000 claims description 13
- -1 silicate ester Chemical class 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical group NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims 4
- 229940008099 dimethicone Drugs 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 17
- 238000004140 cleaning Methods 0.000 abstract description 14
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 244000280244 Luffa acutangula Species 0.000 abstract description 4
- 235000009814 Luffa aegyptiaca Nutrition 0.000 abstract description 4
- 241001474374 Blennius Species 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 239000006173 Good's buffer Substances 0.000 abstract description 2
- 238000005202 decontamination Methods 0.000 abstract description 2
- 230000003588 decontaminative effect Effects 0.000 abstract description 2
- 239000004816 latex Substances 0.000 abstract description 2
- 229920000126 latex Polymers 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 230000003115 biocidal effect Effects 0.000 abstract 1
- 239000012459 cleaning agent Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- QPKCDMXLSDFCQD-UHFFFAOYSA-N 8-bromo-2,6-dimethyloct-2-ene Chemical compound BrCCC(C)CCC=C(C)C QPKCDMXLSDFCQD-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000000490 cinnamyl group Chemical group C(C=CC1=CC=CC=C1)* 0.000 description 3
- 125000002350 geranyl group Chemical group [H]C([*])([H])/C([H])=C(C([H])([H])[H])/C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- PHSPJQZRQAJPPF-UHFFFAOYSA-N N-alpha-Methylhistamine Chemical compound CNCCC1=CN=CN1 PHSPJQZRQAJPPF-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 description 2
- QMVPMAAFGQKVCJ-UHFFFAOYSA-N citronellol Chemical compound OCCC(C)CCC=C(C)C QMVPMAAFGQKVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229920001542 oligosaccharide Polymers 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical class O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QMVPMAAFGQKVCJ-SNVBAGLBSA-N (R)-(+)-citronellol Natural products OCC[C@H](C)CCC=C(C)C QMVPMAAFGQKVCJ-SNVBAGLBSA-N 0.000 description 1
- 241000228212 Aspergillus Species 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 241000228347 Monascus <ascomycete fungus> Species 0.000 description 1
- 241000235395 Mucor Species 0.000 description 1
- 108010081750 Reticulin Proteins 0.000 description 1
- 241000235527 Rhizopus Species 0.000 description 1
- 238000000944 Soxhlet extraction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- MSWZFWKMSRAUBD-UHFFFAOYSA-N beta-D-galactosamine Natural products NC1C(O)OC(CO)C(O)C1O MSWZFWKMSRAUBD-UHFFFAOYSA-N 0.000 description 1
- MSWZFWKMSRAUBD-QZABAPFNSA-N beta-D-glucosamine Chemical compound N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O MSWZFWKMSRAUBD-QZABAPFNSA-N 0.000 description 1
- JGQFVRIQXUFPAH-UHFFFAOYSA-N beta-citronellol Natural products OCCC(C)CCCC(C)=C JGQFVRIQXUFPAH-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000000484 citronellol Nutrition 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002482 oligosaccharides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000036186 satiety Effects 0.000 description 1
- 235000019627 satiety Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- C08J2399/00—Characterised by the use of natural macromolecular compounds or of derivatives thereof not provided for in groups C08J2301/00 - C08J2307/00 or C08J2389/00 - C08J2397/00
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Plant Pathology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a mildew-proof composite elastomer, which comprises a porous elastomer and a silica gel composite layer, wherein the silica gel composite layer is attached to the inner surface and the outer surface of the porous elastomer, and the silica gel composite layer comprises the following specific components: silicon-containing matrix, curing agent and mildew preventive; the invention also provides a preparation method of the mildew-proof composite elastomer. The mildew-proof composite elastomer has the advantages of good heat resistance, non-stickiness, good buffer resilience performance, difficult deformation, good air permeability, antibiosis and mildew resistance, strong tearing resistance and long service life; according to the invention, the silica gel composite layer is combined with polyurethane sponge, latex sponge, seaweed sponge and the like or other objects with three-dimensional reticular structures such as loofah sponge, so that the cleaning agent has an excellent decontamination function in the cleaning process, and can still keep a good antibacterial and mildewproof effect in a high-temperature and high-humidity environment; but also can keep nonblocking and undeformable after repeated use.
Description
Technical Field
The invention belongs to the technical field of elastomer preparation, and particularly relates to a mildew-proof composite elastomer and a preparation method thereof.
Background
The common cleaning sponge is made of polyurethane foam, is not resistant to temperature and easy to deform, is not easy to remove oil stains when being stained with the polyurethane foam, is easy to breed bacteria, and has short service life. With the provision of living standards of people, the requirements on the quality of life are higher and higher. Particularly in kitchens, food not only solves the problem of satiety, but also pursues and enjoys the color, flavor and taste of food. Meanwhile, in the aspect of kitchen cleaning, the requirements are higher and higher. Such as dish washing, table and counter cleaning, and other kitchen utensils, are increasingly more demanding on the consumer.
There are various kinds of cleaning articles in the aspect of cleaning daily necessities, such as: loofah sponge, silk-like loofah sponge, seaweed sponge and the like. The cleaning products play a great role in cleaning tableware and kitchenware, but after the cleaning products are used for a period of time, oil stains and stains are adhered, bacteria are easy to breed, and the cleaning products are mildewed; some also deform by sticking and are discarded after a long time.
The amino-oligosaccharin is agricultural-grade chitosan oligosaccharide, is oligosaccharide formed by connecting D-glucosamine with beta-1, 4 glycosidic bonds, is prepared by degrading chitosan by chitin, or is prepared by degrading low-toxicity fungicide extracted by microbial fermentation, can produce inhibition effect on the growth of some pathogenic bacteria and influence the germination of fungal spores, but has unsatisfactory inhibition activity on moulds existing in daily life, especially mucor, rhizopus, aspergillus, monascus and the like, and is unstable under acidic conditions.
In order to solve the problems existing at present, the applicant prepares the amino-oligosaccharin derivative and a silicon-containing substrate into a silica gel composite layer and extrudes and coats the silica gel composite layer on the porous elastomer, and invents the cleaning sponge which has the advantages of mildew resistance, bacteria resistance, high temperature resistance, air permeability, good elasticity, difficult deformation, good cleaning effect and long service life.
Disclosure of Invention
The invention aims to solve the problems that the conventional sponge is not high-temperature and high-humidity resistant and has extremely poor mildew-proof and antibacterial properties, and provides the cleaning sponge which is mildew-proof and antibacterial, high-temperature resistant, breathable, good in elasticity, difficult to deform, good in cleaning effect and long in service life.
In order to achieve the technical purpose, the invention provides the following technical scheme: the mildew-proof composite elastomer is characterized by comprising a porous elastomer and a silica gel composite layer, wherein the silica gel composite layer is attached to the inner surface and the outer surface of the porous elastomer, and the silica gel composite layer specifically comprises the following components: silicon-containing matrix, curing agent and mildew preventive;
the silicon-containing matrix comprises at least three of polyalkylsiloxane, alkyl silicone oil, polyether silicone oil, silicon dioxide, silicate ester and white carbon black;
the curing agent is alkyl tin acetate;
the mildew preventive is amino-oligosaccharin or amino-oligosaccharin derivative.
Further, the curing agent is dibutyltin diacetate.
Further, the silicon-containing matrix is polydimethylsiloxane, dimethyl silicone oil, polyether silicone oil, white carbon black and tetraethoxysilane.
Further, the mass ratio of the polydimethylsiloxane, the dimethyl silicone oil, the polyether silicone oil, the white carbon black and the ethyl orthosilicate is 10-30:70-90:5-15:5-15: 1-5.
Further, the mass ratio of the polydimethylsiloxane, the dimethyl silicone oil, the polyether silicone oil, the white carbon black and the ethyl orthosilicate is 20:80:10:10: 3.
Further, the amino-oligosaccharin derivative comprises one or more of amino-oligosaccharin-geraniol derivative, amino-oligosaccharin-menthol derivative, amino-oligosaccharin-cinnamyl alcohol derivative, amino-oligosaccharin-citronellol derivative, amino-oligosaccharin-linalool derivative and amino-oligosaccharin-nerol.
Further, the mildew preventive specifically comprises the following structure:
wherein R is selected from
(citronellyl),
(cinnamyl),
(linalyl)
(menthyl) to (meth),
(neryl) of,
(geranyl);
further, R is preferably menthyl or neryl.
The invention also provides a preparation method of the mildew-proof composite elastomer, which comprises the following specific steps:
uniformly mixing the silicon-containing matrix, the curing agent and the mildew preventive to obtain a sizing material, dispersing the sizing material in the porous elastomer, and standing at 0-40 ℃ to obtain the mildew-proof composite elastomer.
Further, the standing time is 2 to 24 hours.
Further, the porous elastomer is a sponge or a reticular fiber elastomer.
Due to the adoption of the technology, compared with the prior art, the invention has the remarkable advantages that:
1) the mildew-proof composite elastomer has good heat resistance and non-adhesiveness, good buffer resilience performance and difficult deformation;
2) the mildew-proof composite elastomer has good air permeability, strong anti-bacterial and mildew-proof property, strong tearing resistance and long service life, and has excellent decontamination function in the scrubbing process by combining the silica gel composite layer with polyurethane sponge, latex sponge, seaweed sponge and the like or other objects with three-dimensional reticular structures such as loofah sponge, and can still keep good anti-bacterial and mildew-proof effects in a high-temperature and high-humidity environment; but also can keep nonblocking and undeformable after repeated use.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
Example 1
1) Preparation of R-Br (R is citronellyl):
dissolving 5mL of citronellol and 2mL of phosphorus tribromide with 30mL of anhydrous ether respectively, adding an amino-oligosaccharide solution and 0.45mL of pyridine into a three-neck flask, quickly stirring under the condition of ice salt bath, slowly dropwise adding the phosphorus tribromide solution into the reaction system, continuously and quickly stirring for 45min after dropwise adding is finished, washing with 5% sodium bicarbonate solution, deionized water and saturated salt solution for 3 times in sequence, adding anhydrous magnesium sulfate, drying, filtering with a 0.22-micron filter membrane, and rotationally evaporating and concentrating for 30min at 35 ℃ to obtain the light yellow oily liquid citronellyl bromide.
2) Preparation of amino-oligosaccharin-ROH derivative (R is citronellyl):
dissolving 1g of amino-oligosaccharin and 2mL of citronellyl bromide by using dimethyl sulfoxide and dimethyl formamide respectively, adding triethylamine as a catalyst, slowly adding citronellyl bromide solution into chitosan oligosaccharide solution by using a constant-pressure funnel, reacting for 6 hours at 45 ℃, adding excessive acetone to terminate the reaction after the reaction is finished, and centrifuging to collect precipitates. Extracting with petroleum ether in a Soxhlet extraction device for 12h, vacuum drying to obtain brown solid powder, and freeze drying to obtain chitosan oligosaccharide-g-citronellol derivative with yield of 65%.
Example 2
1) Preparation of R-Br (R is cinnamyl):
similar to example 1.
2) Preparation of amino-oligosaccharin-ROH derivative (R is cinnamyl):
in analogy to example 1, yield 63%.
Example 3
1) Preparation of R-Br (R is linalyl):
similar to example 1.
2) Preparation of amino-oligosaccharin-ROH derivative (R is linalyl):
in analogy to example 1, yield 69%.
Example 4
1) Preparation of R-Br (R is menthyl):
similar to example 1.
2) Preparation of amino-oligosaccharin-ROH derivative (R is menthyl):
similar to example 1, yield 66%.
Example 5
1) Preparation of R-Br (R is neryl):
similar to example 1.
2) Preparation of amino-oligosaccharin-ROH derivative (R is neryl):
similar to example 1, yield 71%.
Example 6
1) Preparation of R-Br (R is geranyl):
similar to example 1.
2) Preparation of amino-oligosaccharin-ROH derivative (R is geranyl):
similar to example 1, yield 67%.
Examples 7 to 16
Uniformly mixing the silicon-containing matrix, the curing agent and the mildew preventive to obtain a sizing material, dispersing the sizing material in the porous elastomer, and standing for 8 hours at room temperature to obtain the mildew-proof composite elastomer.
The preparation method is as above, and the formula composition is shown in the table.
TABLE 1 specific formulation compositions for examples 7-16
Example 17
The results of the performance tests for examples 7-16 are shown in Table 2.
TABLE 2 results of the Performance test of examples 7 to 16
The relevant test method criteria in the table are:
antibacterial and mildew-proof properties: GB/T2591-2003 (antibacterial property test method of antibacterial plastics);
tensile strength, elongation at break: GB/T6344-2008 (determination of tensile strength and elongation at break of flexible foamed polymeric materials);
compression resistance: GB/T6344-2008 (determination of compression set of flexible foamed polymeric materials);
service life: GB/T6344-2008 (method for accelerated ageing tests of flexible foamed polymeric materials).
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, and equivalents including technical features of the claims, i.e., equivalent modifications within the scope of the present invention.
Claims (10)
1. The mildew-proof composite elastomer is characterized by comprising a porous elastomer and a silica gel composite layer, wherein the silica gel composite layer is attached to the inner surface and the outer surface of the porous elastomer, and the silica gel composite layer specifically comprises the following components: silicon-containing matrix, curing agent and mildew preventive;
the silicon-containing matrix comprises at least three of polyalkylsiloxane, alkyl silicone oil, polyether silicone oil, silicon dioxide, silicate ester and white carbon black;
the curing agent is alkyl tin acetate;
the mildew preventive is amino-oligosaccharin or amino-oligosaccharin derivative.
2. An elastomer as claimed in claim 1 wherein said curing agent is dibutyltin diacetate.
3. An elastomer as claimed in claim 1 wherein said silicon containing matrix is polydimethylsiloxane, dimethicone, polyether silicone oil, white carbon black, ethyl orthosilicate.
4. An elastomer as claimed in claim 3, wherein the mass ratio of said polydimethylsiloxane, said dimethylsilicone oil, said polyether silicone oil, said white carbon black and said tetraethoxysilane is 10-30:70-90:5-15:5-15: 1-5.
5. An elastomer as claimed in claim 4, wherein the mass ratio of said polydimethylsiloxane, said dimethylsilicone oil, said polyether silicone oil, said white carbon black and said tetraethoxysilane is 20:80:10:10: 3.
6. The elastomer of claim 1, wherein the amino-oligosaccharin derivative comprises one or more of amino-oligosaccharin-geraniol derivative, amino-oligosaccharin-menthol derivative, amino-oligosaccharin-cinnamyl alcohol derivative, amino-oligosaccharin-citronellol derivative, amino-oligosaccharin-linalool derivative, and amino-oligosaccharin-nerol.
7. An elastomer as claimed in claim 6, wherein said mildewcide is in the form of:
wherein R is selected from
8. A method for preparing the mildew-proof composite elastomer as claimed in claim 1, which comprises the following specific steps:
uniformly mixing the silicon-containing matrix, the curing agent and the mildew preventive to obtain a sizing material, dispersing the sizing material in the porous elastomer, and standing at 0-40 ℃ to obtain the mildew-proof composite elastomer.
9. The method of claim 8, wherein the standing time is 2 to 24 hours.
10. The method of claim 8, wherein the porous elastomer is a sponge or a reticulated fiber elastomer.
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