CN104862952A - New preparation technology of permanent antibiosis and mildew prevention waterproof agent - Google Patents
New preparation technology of permanent antibiosis and mildew prevention waterproof agent Download PDFInfo
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- CN104862952A CN104862952A CN201410857542.0A CN201410857542A CN104862952A CN 104862952 A CN104862952 A CN 104862952A CN 201410857542 A CN201410857542 A CN 201410857542A CN 104862952 A CN104862952 A CN 104862952A
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Abstract
The invention relates to a new preparation technology of a permanent antibiosis and mildew prevention waterproof agent. A technical scheme adopted in the invention is characterized in that the technology comprises the following steps: uniformly stirring a certain amount of an aqueous solution of triethanolamine (TEA) with a certain amount of an aqueous solution of polyvinylpyrrolidone (PVP), adding 0.25mg/mL of silver nitrate, and carrying out ultrasonic treatment at 55DEG C for 15min in order to obtain an aqueous nanometer silver solution with the particle size of 3-8nm. Antibiosis experiment researches and economy condition consideration show that the optimum amount of the above antibiosis agent is 0.75[mu]g of water-soluble nanometer silver in 1g of a waterproof material. The technology has the advantages of simple process, low cost, and safety and non-toxicity of the above product, and the treated waterproof agent has the characteristics of no color change after long term use, no change of the appearance of the waterproof material, and permanent antibiosis and mildew prevention effects.
Description
Technical field
This patent relates to a kind of new preparation process with permanent antibacterial and mouldproof waterproofing agent, belongs to field of nanometer material technology.
Background technology
Occurring in nature also exists various microorganism, and as bacterium, fungi etc., they are in the media such as air, water, soil, and these microorganisms under the suitable conditions can amount reproduction, thus affects the character of waterproofing agent, as color change, powerfully to reduce.Equally, also can affect indirectly the healthy of people, propagate various disease, affect skin health, so people are in the urgent need to finding efficient, wide spectrum, lasting antibacterial and mouldproof waterproofing agent, to suppress or to kill the harmful microorganism that waterproofing agent exists.
Antibacterial and mouldproof waterproofing agent is under the condition keeping waterproof, adds the material that can suppress growth of microorganism, reach antimildew and antibacterial object in waterproofing agent; Meanwhile, antimildew and antibacterial material effectively to corrosion organic in waterproofing agent, thus can extend service life of waterproofing agent by mould fungus inhibition.Early stage antiseptic substantially all belongs to organic series, and be all kinds of complex compounds that are nitrogenous, the element such as sulphur, chlorine mostly, its principal item has: quaternary ammonium salt, biguanides, alcohols, phenols, aldehydes, organic metal class, pyridines, thiophene-based etc.Such antiseptic short-term bactericidal effect is good, but mostly has that heat-resistant stability is poor, the life-span is short, toxicity is relatively large, and excitant is also strong, it can be used as antiseptic to be applied in easy wash-out on waterproofing agent, and easy in human body surface enrichment gradually, and Long-Time Service easily produces pathology.The safe, comfortable of people and requirement that persistence is antibacterial cannot be met.Have bibliographical information Nano Silver process fabric to make it have antibacterial action, but Nano Silver is easily oxidized, and affects attractive in appearance, not water-fastness equally in addition.In order to improve the washability of antibacterial finishing agent, Chinese scholars by introducing active group to existing finishing agent chemical modification, having synthesized the novel finishing agent self with reactivity and preparation can the potential reaction antibacterial finishing agent etc. of activating and regenerating, as the organosilicon quaternary ammonium salt antibacterial finishing agent (DC-5700 as Dow corning company) of current document wide coverage, integrate good anti-bacterial effect, safety non-toxic and wash resistant, solve the difficult problem that antibacterial finishing agent exists.But organosilicon quaternary ammonium salt complex manufacturing, consumption are large, price is high, this seriously constrains it and promotes the use of.Therefore simple, with low cost, the safety non-toxic of development technology and the antibacterial and mouldproof waterproofing agent with permanent antibacterial action have important practical significance.
Summary of the invention
The present invention is directed to not wash resistant that existing antibacterial waterproofing agent exists, color change, complex process, the shortcoming such as expensive, by the research of antibacterial experiment, determine the optimum amount of antiseptic.A kind of new preparation process with the waterproofing agent of permanent antibacterial and mouldproof effect is provided.This technological process is simple, with low cost, product safety is nontoxic, and waterproofing agent after treatment has permanent antibacterial and mouldproof effect.
Accompanying drawing explanation
" Fig. 1 is the mould lab diagram under variable concentrations; Fig. 2 is the mould lab diagram of washing under concentration is 0.75 μ g/g and 1.0 μ g/g after 28 times "
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.These embodiments are only not used in for illustration of the present invention and limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values are equally in the application's appended claims limited range after the content of having read the present invention's instruction.
Embodiment 1
The new preparation process step of antibacterial and mouldproof waterproofing agent is as follows:
(1) after the triethanolamine (TEA) of 1.8mg/mL and polyvinylpyrrolidone (PVP) aqueous solution of 1.2mg/mL being stirred, add the silver nitrate of 0.25mg/mL, ultrasonic 15min at 55 DEG C, obtains the water-soluble nano silver solution that particle diameter is 3 ~ 8nm.Be stored in brown reagent bottle, lucifuge is for subsequent use.
(2) take 10 parts of waterproof materials, every part of 20g, put into 10 culture dishes respectively, and number.Respectively get the water-soluble nano silver solution of 2 parts of variable concentrations, put into above-mentioned 10 culture dishes respectively, be uniformly mixed, at room temperature preserve 1 week, make it solidify.The concentration of every part of water-soluble nano silver solution is respectively 0 μ g/g, 0.25 μ g/g, 0.50 μ g/g, 0.75 μ g/g, 1.0 μ g/g
(3) 10 culture dishes be cured are carried out mould experiment, experimental result shows mould in the culture dish of 0 μ g/g, 0.25 μ g/g, 0.50 μ g/g and can breed, and in the culture dish of 0.75 μ g/g, 1.0 μ g/g, mould can not carry out breeding (as shown in Figure 1).
(4) by above-mentioned 4 culture dishes containing 0.75 μ g/g and 1.0 μ g/g at room temperature every 12h wash 1 time, after 2 weeks (washing 28 times), the culture dish containing 0.75 μ g/g and 1.0 μ g/g after washing 4 carries out mould experiment again, and experimental result shows mould in 4 culture dishes and can not carry out breeding (as shown in Figure 2).
(5) consider from experimental result and economic condition, every gram of waterproof material is best antimicrobial mildew-resistant waterproofing agent containing 0.75 μ g water-soluble nano silver.
It is pure that described TEA, PVP, silver nitrate are analysis, and water is deionized water; Waterproof material derives from Boydii canopy waterproof material Co., Ltd (cement-base infiltration crystallization material), and its main component is cement, masterbatch, rubber powder, carbon dust.
Compared with current antibacterial and mouldproof waterproofing agent, advantage applies of the present invention is in the following aspects:
1) the present invention has that technique is simple, safety and environmental protection, can not change the performance of waterproof material, the features such as production cost is low.
2) this technique concentration used is low, and has good antibacterial action.Long-Time Service can not variable color, can not change the outward appearance of waterproof material.
3) there is the effect of persistent high efficiency antibacterial and mouldproof.Experiment proves, after washing 28 times, antibacterial and mouldproof effect is appointed so significantly, as shown in Figure of description 2.
Claims (3)
1. the present invention is that waterproof material provides a kind of new preparation process with permanent antibacterial and mouldproof waterproofing agent, belongs to field of nanometer material technology.It is characterized in that: after the triethanolamine (TEA) of 1.8mg/mL and polyvinylpyrrolidone (PVP) aqueous solution of 1.2mg/mL are stirred, add the silver nitrate of 0.25mg/mL, ultrasonic 15min at 55 DEG C, obtains the water-soluble nano silver solution that particle diameter is 3 ~ 8nm.Be stored in brown reagent bottle, lucifuge is for subsequent use.
2. preparation method according to claim 1, is characterized in that: ultrasonic 15min at 55 DEG C.
3. the determination of the concentration of best antimicrobial mildew-resistant waterproofing agent in the present invention.It is characterized in that: determine that every gram of waterproof material contains the consumption that 0.75 μ g water-soluble nano silver is best antimicrobial mildew-resistant waterproofing agent by mould experiment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410857542.0A CN104862952A (en) | 2014-12-31 | 2014-12-31 | New preparation technology of permanent antibiosis and mildew prevention waterproof agent |
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| CN201410857542.0A CN104862952A (en) | 2014-12-31 | 2014-12-31 | New preparation technology of permanent antibiosis and mildew prevention waterproof agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312590A (en) * | 2015-10-10 | 2016-02-10 | 皖西学院 | Preparation method for water-soluble nanometer silver colloid |
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| CN1387968A (en) * | 2001-05-26 | 2003-01-01 | 西北稀有金属材料研究院 | Prepn of superfine spherical silver powder |
| KR100624964B1 (en) * | 2004-11-18 | 2006-09-15 | 대한주택공사 | Coating composition for antibiosis underground water tank using liquid type nano silver |
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| CN101347841A (en) * | 2008-09-03 | 2009-01-21 | 西北大学 | Method for preparing high tap density silver powder with controllable graininess |
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| CN103864386A (en) * | 2014-03-24 | 2014-06-18 | 广东嘉宝莉科技材料有限公司 | Self-cured delayed-coagulation inorganic leakage-proof waterproof material and preparation method thereof |
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| CN105312590A (en) * | 2015-10-10 | 2016-02-10 | 皖西学院 | Preparation method for water-soluble nanometer silver colloid |
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Application publication date: 20150826 |