CN109320755A - A kind of novel antimicrobial sponge and preparation method thereof - Google Patents
A kind of novel antimicrobial sponge and preparation method thereof Download PDFInfo
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- CN109320755A CN109320755A CN201810809249.5A CN201810809249A CN109320755A CN 109320755 A CN109320755 A CN 109320755A CN 201810809249 A CN201810809249 A CN 201810809249A CN 109320755 A CN109320755 A CN 109320755A
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
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Abstract
The invention discloses a kind of novel antimicrobial sponges and preparation method thereof, the sponge comprises the following components in parts by weight: 100 parts of polyvalent alcohol, 45~68 parts of polyisocyanates, 1.1~2.4 parts of foam stabiliser, 0.8~1.5 part of amines catalyst, 5~13 parts of foaming agent and 3~8 parts of antibacterial microcapsule, and the antibacterial microcapsule includes nano silver, strawflower extract and tea polyphenols.The present invention, in conjunction with the different antibacterial features of different antibacterial agents, they is compounded to give full play to its antimicrobial advantage by the way that nano silver, strawflower extract are added in sponge material as antibacterial agent.Simultaneously, the present invention contains strawflower extract, tea polyphenols and nano silver in microencapsulation structure, pass through the embedding effect of microcapsules, enable natural antibacterial agent slow release, realize the effect of durable antibiotic, nano silver oxidation stain is avoided simultaneously, and the addition of antibacterial microcapsule does not influence the resilience of sponge material.
Description
Technical field
The present invention relates to sponge material technical fields, and in particular to a kind of novel antimicrobial sponge and preparation method thereof.
Background technique
Sponge is the regular supplies of people's home life, is widely used in the beddings such as pillow, mattress, and these beddings make
It is right with often due to gas permeability and dissipate moist poor, being easy to happen mildew after a period of time or breed bacterium and other microorganisms
Human health constitutes threat.Studies have found that containing 1,000,000 or more fungal spores in each pillow material.Pillow and
Contain a large amount of Aspergillus in mattress material, and Aspergillus is very likely to cause disease, leads to catch a cold cross-infection, Aspergillus
Pneumonia, asthma deterioration etc..Therefore, in order to improve the sleep environment and human health of people, it is necessary to which exploitation has good anti-
The antimicrobial sponge products of bacterium, and apply it in bedding.
Exploitation has the polyurethane sponge of antimicrobial form at present, and cheap organic anti-bacterial is added in polyurethane sponge material
Material, to upgrade antibacterial effect.But in actual use, the sterilization speed of organic antibacterial agent is than very fast, but there are heat-resisting
Property, the problem that stability is insufficient and the inhibiting effect duration is short, and itself decomposition product of these antibacterial agents and volatile matter may
It is harmful to the human body, limits its application in antibacterial sponge.Currently, the TiO added in sponge2Antibacterial agent has spectrum wide
The function of composing antibacterial and mouldproof, is able to suppress and kills microorganism and have deodorizing fungus-proof effect, itself to human body and environmentally friendly,
But TiO2It is to decompose organic matter based on light-catalyzed reaction and there is antibacterial action, needs the competence exertion under illumination condition anti-
The antimicrobial function of bacterium.
Summary of the invention
It is an object of the invention to provide in place of overcome the deficiencies in the prior art a kind of novel antimicrobial sponge and its
Preparation method, to improve the antibacterial effect of sponge material.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of novel antimicrobial sponge, comprises the following components in parts by weight: 100 parts of polyvalent alcohol, polyisocyanates 45
~68 parts, 1.1~2.4 parts of foam stabiliser, 0.8~1.5 part of amines catalyst, 5~13 parts of foaming agent and antibacterial microcapsule 3
~8 parts, the antibacterial microcapsule includes nano silver, strawflower extract and tea polyphenols.
Strawflower extract and tea polyphenols are natural antibacterial agents, and natural antibacterial agent has good safety and biodegrade
Property, but due to its poor heat resistance, the duration is short.Nano silver has the characteristics that broad-spectrum antiseptic and durable antibiotic, but exists
Defect easy to change, nano silver, which is embedded in microcapsule structure, can prevent nano silver oxidation stain.Sponge material is changed
Property when, it is simple using a kind of antibacterial agent, often due to its intrinsic defect makes the performance of material have bigger limitation
Property.Inventor combines the different antibacterial features of different antibacterial agents, they is compounded antimicrobial excellent to give full play to its
Gesture.
The present invention contains strawflower extract, tea polyphenols and nano silver in microencapsulation structure, passes through the embedding of microcapsules
Effect, enables natural antibacterial agent slow release, realizes the effect of durable antibiotic, while avoiding nano silver oxidation stain, and
And the addition of antibacterial microcapsule does not influence the resilience of sponge material.
As novel antimicrobial sponge of the present invention, in the antibacterial microcapsule, the weight of nano silver and tea polyphenols
The weight ratio of amount 0.05~0.15:1 of ratio, strawflower extract and tea polyphenols is 0.5~1:1.
As novel antimicrobial sponge of the present invention, in the antibacterial microcapsule, strawflower extract and tea polyphenols
Weight ratio be 0.6:1.
Inventor tests discovery, selects the specific compound proportion of antibacterial agent, helps to promote the antimicrobial of sponge material
Effect, and there is good mould proof deodorizing effect.
As novel antimicrobial sponge of the present invention, the capsule material of the antibacterial microcapsule includes Quaternary Ammonium Salt of Chitosan
And carragheen.
Positively charged chitosan can be reacted with electronegative carragheen simultaneously, prepare composite micro-capsule；And season
Ammonium salt chitosan is compared with general chitosan, and tool is improved significantly and improved in terms of antibiotic property, helps further to mention
Rise the anti-microbial effect of sponge material.
As novel antimicrobial sponge of the present invention, comprise the following components in parts by weight: 100 parts of polyvalent alcohol,
55 parts of polyisocyanates, 1.8 parts of foam stabiliser, 1.0 parts of amines catalyst, 9 parts of foaming agent and 5 parts of antibacterial microcapsule.
As novel antimicrobial sponge of the present invention, comprise the following components in parts by weight: 100 parts of polyvalent alcohol,
62 parts of polyisocyanates, 1.5 parts of foam stabiliser, 1.2 parts of amines catalyst, 6 parts of foaming agent and 6 parts of antibacterial microcapsule.
Above-mentioned technology improves it thoroughly so that the sponge material has good porosity by adjusting the proportion of each component
Gas.
As novel antimicrobial sponge of the present invention, the partial size of the nano silver is 10~100nm.
As novel antimicrobial sponge of the present invention, the polyvalent alcohol includes the polyoxygenated third of 25~35wt%
The polytetrahydrofuran polyol of alkene polyalcohol, the polycaprolactone polyol of 35~55wt% and 10~40wt%, it is described gather it is polynary
The average functionality of alcohol is 3~3.5.
The intersolubility of itself and other raw material components can be effectively improved using compound polyvalent alcohol.
As novel antimicrobial sponge of the present invention, the polyisocyanates is diphenylmethane diisocyanate
At least one of ester, carbodiimides-uretonimine-modified isocyanates；The foam stabiliser is silicone oil；The foaming
Agent is water or methylene chloride；The amines catalyst is triethylamine, triethylene diamine, dimethyl cyclohexyl amine, pentamethyl divinyl
At least one of triamine.
As novel antimicrobial sponge of the present invention, the methyl diphenylene diisocyanate includes diphenylmethyl
Alkane -2,4 '-diisocyanate, diphenyl methane -4,4 '-diisocyanate.
The present invention also provides a kind of preparation methods of above-mentioned novel antimicrobial sponge, comprising the following steps:
(1) each component raw material is weighed according to the above ratio；
(2) antibacterial microcapsule is prepared；
(3) polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent are mixed, is stirred in 1000~1200rpm
After uniformly, the antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 15~30min, obtains mixed material
A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
The preferred embodiment of preparation method as novel antimicrobial sponge of the present invention, the step (2)
In, after carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antimicrobial fluid；Match
The acetic acid solution of chitosan processed, is added dropwise in antiseptic solution, adjusts pH to 5~6, reacts in 40~50 DEG C of waters bath with thermostatic control
It after 20~40min, is placed in ice-water bath, and crosslinking agent is added, it is spray-dried to obtain described resist after 0.5~1h of crosslinking curing
Bacteria microcapsule.
Positively charged chitosan can be reacted with electronegative carragheen simultaneously, prepare composite micro-capsule.
Compared with prior art, the invention has the benefit that
The present invention in sponge material by being added nano silver, strawflower extract as antibacterial agent, in conjunction with different antibacterial agents
Different antibacterial features, they are compounded to give full play to its antimicrobial advantage.Meanwhile the present invention extracts strawflower
Object, tea polyphenols and nano silver contain in microencapsulation structure, by the embedding effect of microcapsules, natural antibacterial agent are delayed
On The Drug Release, realizes the effect of durable antibiotic, while avoiding nano silver oxidation stain, and the addition of antibacterial microcapsule does not influence sea
The resilience of continuous material.
Detailed description of the invention
Fig. 1 is influence of the weight ratio of strawflower extract and tea polyphenols to bacteriostasis rate in the sponge of embodiment 1.
Fig. 2 is influence of the weight ratio of nano silver and tea polyphenols to bacteriostasis rate and rebound time in the sponge of embodiment 2.
Specific embodiment
Purposes, technical schemes and advantages in order to better illustrate the present invention, below in conjunction with specific embodiment to the present invention
It further illustrates.It will be appreciated by those skilled in the art that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In embodiment, used experimental method is conventional method unless otherwise specified, material used, reagent etc.,
It is commercially available unless otherwise specified.
Strawflower extract of the present invention the preparation method comprises the following steps: by after strawflower pulverization process, with soaked in absolute ethyl alcohol, wax
The ratio of chrysanthemum and dehydrated alcohol is 1mg:15~20mL, and after impregnating for 24 hours, filtering removes ethyl alcohol by Rotary Evaporators, obtains wax
Chrysanthemum extract.
Embodiment 1
A kind of embodiment of preparation method as novel antimicrobial sponge of the present invention, described in the present embodiment
The preparation method of novel antimicrobial sponge the following steps are included:
(1) each component raw material is weighed according to the above ratio
100 parts of polyvalent alcohol, 55 parts of polyisocyanates, 1.8 parts of foam stabiliser, 1.0 parts of amines catalyst, foaming agent 9
Part and 5 parts of antibacterial microcapsule, the polyvalent alcohol includes that the polyoxypropylene polyol of 25wt%, the polycaprolactone of 35wt% are more
The polytetrahydrofuran polyol of the pure and mild 40wt% of member, the average functionality of the polyvalent alcohol are 3.5；The antibacterial microcapsule
In, the weight ratio 0.12:1 of nano silver and tea polyphenols, the weight ratio of strawflower extract and tea polyphenols be respectively 0.1:1,0.2:1,
0.5:1,0.6:1,0.8:1,1:1；The partial size of the nano silver is 10nm；The antibacterial microcapsule is with carragheen and quaternary ammonium salt crust
Glycan is as capsule material, using complex antimicrobials as capsule-core.
(2) antibacterial microcapsule is prepared:
After carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antibacterial
Liquid；The acetic acid solution for preparing Quaternary Ammonium Salt of Chitosan, is added dropwise in antiseptic solution, pH to 5.5 is adjusted, in 40 DEG C of thermostatted waters
After bath reaction 30min, be placed in ice-water bath, and crosslinking agent is added, after 0.5~1h of crosslinking curing, it is spray-dried obtain it is described
Antibacterial microcapsule, the technological parameter of spray drying are as follows: feeding temperature is 40~45 DEG C, and inlet air temperature is 160~180 DEG C, outlet air
Temperature is 50~60 DEG C.
(3) by polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent mix, 1000rpm after mixing evenly,
The antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 25min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
Bacteriostatic test is carried out to the sponge being prepared according to the above method, makees antibacterial tests with staphylococcus aureus,
Culture medium is nutrient agar, and the sponge material of same size and shape is placed in culture and is concentrated, Staphylococcus aureus is inoculated with
Bacterium, concentration 109CFU/mL calculates bacteriostasis rate.As the weight ratio of strawflower extract and tea polyphenols increases known to Fig. 1 result
Add, the bacteriostasis rate of sponge is in downward trend after first increasing, when the weight ratio of strawflower extract and tea polyphenols is 0.6:1, sea
Continuous bacteriostasis rate highest.
Embodiment 2
The component of the novel antimicrobial sponge of the present embodiment, preparation method and embodiment are essentially identical, and different is,
In antibacterial microcapsule described in the present embodiment, weight ratio 0.01:1,0.05:1 of nano silver and tea polyphenols, 0.1:1,0.12:1,
The weight ratio of 0.15:1 and 0.2:1, strawflower extract and tea polyphenols is respectively 0.6:1.
Bacteriostatic test and resilience test are carried out to the sponge being prepared according to the above method, as a result as shown in Fig. 2.
Resilience performance detection method: being prepared into 20cm × 20cm × 10cm sponge, places the object of 1kg, 5min thereon
The metering rebound time afterwards.
As the weight ratio of nano silver and tea polyphenols increases known to Fig. 2 result, the bacteriostasis rate of sponge and rebound time are equal
In the trend of increase.
Embodiment 3
A kind of embodiment of preparation method as novel antimicrobial sponge of the present invention, described in the present embodiment
The preparation method of novel antimicrobial sponge the following steps are included:
(1) each component raw material is weighed according to the above ratio
100 parts of polyvalent alcohol, 62 parts of polyisocyanates, 1.5 parts of foam stabiliser, 1.2 parts of amines catalyst, foaming agent 6
Part and 6 parts of antibacterial microcapsule, the polyvalent alcohol includes that the polyoxypropylene polyol of 32wt%, the polycaprolactone of 50wt% are more
The polytetrahydrofuran polyol of the pure and mild 18wt% of member, the average functionality of the polyvalent alcohol are 3~3.5；The micro- glue of antibacterial
In capsule, the weight ratio 0.15:1 of nano silver and tea polyphenols, the weight ratio of strawflower extract and tea polyphenols is 0.6:1；The nanometer
The partial size of silver is 10nm；The antibacterial microcapsule using carragheen and Quaternary Ammonium Salt of Chitosan as capsule material, using complex antimicrobials as
Capsule-core.
(2) antibacterial microcapsule is prepared:
After carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antibacterial
Liquid；The acetic acid solution for preparing Quaternary Ammonium Salt of Chitosan, is added dropwise in antiseptic solution, pH to 5 is adjusted, in 40 DEG C of waters bath with thermostatic control
After reacting 40min, it is placed in ice-water bath, and crosslinking agent is added, it is spray-dried to obtain described resist after 0.5~1h of crosslinking curing
Bacteria microcapsule, the technological parameter of spray drying are as follows: feeding temperature is 40~45 DEG C, and inlet air temperature is 160~180 DEG C, out wind-warm syndrome
Degree is 50~60 DEG C.
(3) by polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent mix, 1000rpm after mixing evenly,
The antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 30min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
Comparative example 1
The preparation method and embodiment of the novel antimicrobial sponge of this comparative example are essentially identical, and different is, by season
Ammonium salt chitosan replaces with general chitosan.
Comparative example 2
The preparation method of novel antimicrobial sponge described in this comparative example the following steps are included:
(1) each component raw material is weighed according to the above ratio
100 parts of polyvalent alcohol, 62 parts of polyisocyanates, 1.5 parts of foam stabiliser, 1.2 parts of amines catalyst, foaming agent 6
Part and 6 parts of antibacterial agent, the polyvalent alcohol includes the polycaprolactone polyol of the polyoxypropylene polyol of 32wt%, 50wt%
The polytetrahydrofuran polyol of pure and mild 18wt%, the average functionality of the polyvalent alcohol are 3~3.5；The antibacterial agent includes
The weight ratio 0.15:1 of nano silver, strawflower extract and tea polyphenols, nano silver and tea polyphenols, the weight of strawflower extract and tea polyphenols
Amount is than being 0.6:1；The partial size of the nano silver is 10nm.
(2) by polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent mix, 1000rpm after mixing evenly,
Antibacterial agent is added, after mixing evenly, is ultrasonically treated 30min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
Embodiment 4
A kind of embodiment of preparation method as novel antimicrobial sponge of the present invention, described in the present embodiment
The preparation method of novel antimicrobial sponge the following steps are included:
(1) each component raw material is weighed according to the above ratio
100 parts of polyvalent alcohol, 45 parts of polyisocyanates, 1.1 parts of foam stabiliser, 1.5 parts of amines catalyst, foaming agent 5
Part and 8 parts of antibacterial microcapsule, the polyvalent alcohol includes that the polyoxypropylene polyol of 35wt%, the polycaprolactone of 55wt% are more
The polytetrahydrofuran polyol of the pure and mild 10wt% of member, the average functionality of the polyvalent alcohol are 3~3.5；The micro- glue of antibacterial
In capsule, the weight ratio of 0.05~0.15:1 of weight ratio of nano silver and tea polyphenols, strawflower extract and tea polyphenols are 0.5~1:
1；The partial size of the nano silver is 50 nm；The antibacterial microcapsule is using carragheen and Quaternary Ammonium Salt of Chitosan as capsule material, with compound
Antibacterial agent is as capsule-core.
(2) antibacterial microcapsule is prepared:
After carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antibacterial
Liquid；The acetic acid solution for preparing Quaternary Ammonium Salt of Chitosan, is added dropwise in antiseptic solution, pH to 5.5 is adjusted, in 45 DEG C of thermostatted waters
After bath reaction 35min, be placed in ice-water bath, and crosslinking agent is added, after 0.5~1h of crosslinking curing, it is spray-dried obtain it is described
Antibacterial microcapsule, the technological parameter of spray drying are as follows: feeding temperature is 40~45 DEG C, and inlet air temperature is 160~180 DEG C, outlet air
Temperature is 50~60 DEG C.
(3) by polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent mix, 1100rpm after mixing evenly,
The antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 20min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
Embodiment 5
A kind of embodiment of preparation method as novel antimicrobial sponge of the present invention, described in the present embodiment
The preparation method of novel antimicrobial sponge the following steps are included:
(1) each component raw material is weighed according to the above ratio
100 parts of polyvalent alcohol, 68 parts of polyisocyanates, 2.4 parts of foam stabiliser, 0.8 part of amines catalyst, foaming agent
13 parts and 3 parts of antibacterial microcapsule, the polyvalent alcohol includes the polycaprolactone of the polyoxypropylene polyol of 32wt%, 48wt%
The polytetrahydrofuran polyol of polyalcohol and 20wt%, the average functionality of the polyvalent alcohol are 3~3.5；The antibacterial is micro-
In capsule, the weight ratio 0.15:1 of nano silver and tea polyphenols, the weight ratio of strawflower extract and tea polyphenols is 0.6:1；It is described to receive
The partial size of meter Yin is 100nm；The antibacterial microcapsule is made using carragheen and Quaternary Ammonium Salt of Chitosan as capsule material with complex antimicrobials
For capsule-core.
(2) antibacterial microcapsule is prepared:
After carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antibacterial
Liquid；The acetic acid solution for preparing Quaternary Ammonium Salt of Chitosan, is added dropwise in antiseptic solution, pH to 6 is adjusted, in 50 DEG C of waters bath with thermostatic control
After reacting 200min, it is placed in ice-water bath, and crosslinking agent is added, it is spray-dried to obtain described resist after 0.5~1h of crosslinking curing
Bacteria microcapsule, the technological parameter of spray drying are as follows: feeding temperature is 40~45 DEG C, and inlet air temperature is 160~180 DEG C, out wind-warm syndrome
Degree is 50~60 DEG C.
(3) by polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent mix, 1200rpm after mixing evenly,
The antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 15min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, obtains mixed material B, will mix
Material pours into mold, stands reaction foaming, and after maturation process, demoulding obtains the novel antimicrobial sponge.
The performance detection that following items are carried out to sponge prepared by embodiment 3~5 and comparative example 1~2, as a result such as 1 institute of table
Show.
Bacteriostatic test: bacteriostatic test is carried out to the sponge being prepared according to the above method, is made with staphylococcus aureus
Antibacterial tests, culture medium are nutrient agar, and the sponge material of same size and shape is placed in culture and is concentrated, is inoculated with golden yellow
Color staphylococcus, concentration 109CFU/mL calculates bacteriostasis rate.
Fungal test: according to standard ASTM G21-96, fungal spore suspension device is atomized in sponge surface, allergenic
Containing fungi, Aspergillus aspergillus, thermophilic loose mould and chaetomium globosum in sub- suspension, and material is cultivated in the incubator 28 days
Afterwards, sponge is placed in agar testing piece, after inoculation 7 days, detects and grown on sponge with the presence or absence of fungi, and assess the life of fungi
It is long horizontal, wherein；
0 does not grow；
1 0~10% coverage, insignificant growth；
2 10~30% coverage, it is slight to grow；
3 30~60% coverage is mild to grow；
4 > 60% coverages, raised growth.
Tensile strength is measured by the regulation of GB/T 6344-2008.
By in GB 10807-2006 7.3 method B, collapse than to collapse 65% power divided by the ratio between the power for collapsing 25%.
Table 1
To sum up, the present invention is resisted by the way that nano silver, strawflower extract are added in sponge material as antibacterial agent in conjunction with difference
The different antibacterial features of microbial inoculum compound them to give full play to its antimicrobial advantage.Meanwhile the present invention is by strawflower
Extract, tea polyphenols and nano silver contain in microencapsulation structure, by the embedding effect of microcapsules, enable natural antibacterial agent
Enough slow releases, realize the effect of durable antibiotic, while avoiding nano silver oxidation stain, and the addition of antibacterial microcapsule not shadow
Ring the resilience of sponge material.Sponge of the invention has the function of good bacteria mildew-proof.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of novel antimicrobial sponge, which is characterized in that comprise the following components in parts by weight: 100 parts of polyvalent alcohol, polyisocyanate
45~68 parts of cyanate, 1.1~2.4 parts of foam stabiliser, 0.8~1.5 part of amines catalyst, 5~13 parts of foaming agent and antibacterial
3~8 parts of microcapsules, the antibacterial microcapsule includes nano silver, strawflower extract and tea polyphenols.
2. novel antimicrobial sponge according to claim 1, which is characterized in that in the antibacterial microcapsule, nano silver
With 0.05~0.15:1 of weight ratio of tea polyphenols, the weight ratio of strawflower extract and tea polyphenols is 0.5~1:1.
3. novel antimicrobial sponge according to claim 1, which is characterized in that in the antibacterial microcapsule, strawflower is mentioned
Taking the weight ratio of object and tea polyphenols is 0.6:1.
4. novel antimicrobial sponge according to claim 1, which is characterized in that the capsule material of the antibacterial microcapsule includes
Quaternary Ammonium Salt of Chitosan and carragheen.
5. novel antimicrobial sponge according to claim 1, which is characterized in that comprise the following components in parts by weight: poly-
100 parts of polyalcohol, 55 parts of polyisocyanates, 1.8 parts of foam stabiliser, 1.0 parts of amines catalyst, 9 parts of foaming agent and antibacterial are micro-
5 parts of capsule.
6. novel antimicrobial sponge according to claim 1, which is characterized in that comprise the following components in parts by weight: poly-
100 parts of polyalcohol, 62 parts of polyisocyanates, 1.5 parts of foam stabiliser, 1.2 parts of amines catalyst, 6 parts of foaming agent and antibacterial are micro-
6 parts of capsule.
7. novel antimicrobial sponge according to claim 1, which is characterized in that the polyvalent alcohol include 25~
The polytetrahydrofuran of the polyoxypropylene polyol of 35wt%, the polycaprolactone polyol of 35~55wt% and 10~40wt% is more
First alcohol, the average functionality of the polyvalent alcohol are 3~3.5.
8. novel antimicrobial sponge according to claim 1, which is characterized in that the polyisocyanates is diphenylmethyl
At least one of alkane diisocyanate, carbodiimides-uretonimine-modified isocyanates；The foam stabiliser is silicon
Oil；The foaming agent is water or methylene chloride；The amines catalyst is triethylamine, triethylene diamine, dimethyl cyclohexyl amine, five
At least one of methyl diethylenetriamine.
9. the preparation method of described in any item novel antimicrobial sponges according to claim 1~8, which is characterized in that including
Following steps:
(1) each component raw material is weighed according to the above ratio；
(2) antibacterial microcapsule is prepared；
(3) polyvalent alcohol, foam stabiliser, amines catalyst and foaming agent are mixed, is stirred evenly in 1000~1200rpm
Afterwards, the antibacterial microcapsule of step (2) preparation is added, after mixing evenly, is ultrasonically treated 15~30min, obtains mixed material A；
(4) polyisocyanates is added in mixed material A, stirring starts to reaction, mixed material B is obtained, by mixed material
It pours into mold, stands reaction foaming, after maturation process, demoulding obtains the novel antimicrobial sponge.
10. the preparation method of novel antimicrobial sponge according to claim 9, which is characterized in that the step (2)
In, after carragheen, strawflower extract and tea polyphenols are dissolved in water, nano silver is added, ultrasonic disperse obtains antimicrobial fluid；Match
The acetic acid solution of chitosan processed, and be added dropwise in antiseptic solution, pH to 5~6 is adjusted, is reacted in 40~50 DEG C of waters bath with thermostatic control
It after 20~40min, is placed in ice-water bath, and crosslinking agent is added, it is spray-dried to obtain described resist after 0.5~1h of crosslinking curing
Bacteria microcapsule.
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| CN112538151A (en) * | 2020-12-15 | 2021-03-23 | 梦百合家居科技股份有限公司 | Slow-release fragrance cool antibacterial polyurethane sponge and preparation method thereof |
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| CN113583291A (en) * | 2021-07-27 | 2021-11-02 | 莆田市茂隆鞋服有限公司 | Sponge with good mildew-proof and antibacterial effects and preparation method thereof |
| CN114098216A (en) * | 2020-09-01 | 2022-03-01 | 浙江首想科技有限公司 | Chinese herbal medicine antibacterial high-resilience buffering cotton and preparation method thereof |
| CN114163600A (en) * | 2021-12-09 | 2022-03-11 | 梦百合家居科技股份有限公司 | Breathable antibacterial memory foam and preparation method thereof |
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Application publication date: 20190212 |