CN104003488A - Compound antibacterial activated carbon rod and preparation method thereof - Google Patents
Compound antibacterial activated carbon rod and preparation method thereof Download PDFInfo
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- CN104003488A CN104003488A CN201410242770.7A CN201410242770A CN104003488A CN 104003488 A CN104003488 A CN 104003488A CN 201410242770 A CN201410242770 A CN 201410242770A CN 104003488 A CN104003488 A CN 104003488A
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Abstract
The invention discloses a preparation method of a compound antibacterial activated carbon rod. The preparation method of the compound antibacterial activated carbon rod comprises the following steps: firstly, mixing 20-50wt% of compound antibacterial agent with 50-80wt% of adhesive, heating, so that the adhesive is molten and uniformly mixed with the compound antibacterial agent, cooling, pelletizing to obtain master batches by adopting a pelletizer, then crushing at ultralow temperature by utilizing a low temperature crushing machine, so that compound antibacterial master batch powder is obtained, and screening out the powder with the particle size of 50-100 meshes; secondly, uniformly mixing 10-30wt% of powder obtained through screening in the step one, 50-85wt% of activated carbon powder and 0-20wt% of adhesive, and warming, pressing and moulding by utilizing a sintering method or an extrusion method, so that the compound antibacterial activated carbon rod is obtained. The invention also discloses a compound antibacterial activated carbon rod prepared by adopting the preparation method. The preparation method of the compound antibacterial activated carbon rod has the advantages that an antibacterial effect is good and silver ions separated out from a compound antibacterial agent in water meet the national drinking water standard.
Description
Technical field
The present invention relates to a kind of anti-microbial activity carbon rod technical field, refer in particular to a kind of composite antibacterial active carbon stick and preparation method.
Background technology
Gac is a kind of important filter material, is widely used in water quality and air purification field.For convenience of using, conventionally activity charcoal powder is mixed with cakingagent, and heating is configured as the good bar of a kind of ultimate compression strength.The formation method of described active carbon stick can be divided into extrusion molding and sintering process.
Extrusion molding adopts single screw extrusion machine by activity charcoal powder and the cakingagent feeding forcing machine mixing, and activity charcoal powder accounts for 70% to 95% conventionally, extrudes with 160-185 DEG C of processing temperature, and one-tenth tubulose, cuts after cooling, obtains active carbon stick.
Sintering rule is poured the activity charcoal powder of mixing and cakingagent in metal die into, inserts sintering oven with 220-300 DEG C of temperature sintering 20 to 60 minutes, then takes out mould, opens mould after cooling, obtains active carbon stick.The active carbon stick of sintering process gained, its activity charcoal powder is stopped up less by cakingagent fusing.
But gac is in the time of water treatment, at a large amount of hazardous contaminants of absorption simultaneously, charcoal absorption a large amount of organic pollutants, now microorganism very easily breeds, thereby breeds a large amount of bacteriums, therefore, conventionally in carbon rod, carry silvery for anti-microbial activity carbon rod, to reach antibacterial effect.In prior art, the preparation method of anti-microbial activity carbon rod has following several conventionally:
One, extrusion molding, in the process of utilizing extrusion molding moulding carbon rod, add complex antimicrobials powder, activity charcoal powder, cakingagent and antibacterial powder are extruded to formation active carbon loading silver, and antibacterial powder is generally silver powder, and its defect is, described complex antimicrobials is after extrusion moulding, be coated by cakingagent, complex antimicrobials is difficult to separate out, and antibacterial effect is poor.
Two, sintering process, in the process of utilizing sintering process moulding carbon rod, add complex antimicrobials powder, activity charcoal powder, cakingagent and antibacterial powder sintering form active carbon loading silver, and antibacterial powder is generally silver powder, its defect is, described complex antimicrobials powder is more tiny, makes with the combination rate of cakingagent poorly, and complex antimicrobials powder is separated out in a large number, make complex antimicrobials severe overweight in water, and carbon rod loses antibacterial effect very soon.
Three, coated method, carries silver-colored non-woven fabrics at the outer coated one deck of active carbon stick, and its defect is, the negatively charged ion carrying in silver-colored non-woven fabrics is separated out in a large number, soluble in water, concentration of silver ions in the aqueous solution is exceeded standard, and carbon rod loses antibacterial effect very soon.
Summary of the invention
The object of the present invention is to provide a kind of composite antibacterial active carbon stick and preparation method, make antibacterial effect better, and complex antimicrobials ion conformance with standard in water.
For reaching above-mentioned purpose, solution of the present invention is:
A kind of composite antibacterial active carbon stick preparation method, comprises the following steps:
One, the complex antimicrobials that is 20%-50%wt by weight ratio and weight ratio are that the cakingagent of 50%-80%wt mixes, heating makes cakingagent melting, mix with complex antimicrobials, after cooling, cause master batch through tablets press, recycling Lowtemperaturepulverizer is pulverized under very low temperature, be ground into composite antibacterial master batch powder, filtering out particle diameter is the powder between 50-100 order;
Two, be that 10%-30%wt, activity charcoal powder weight ratio are that 50%-85%wt and cakingagent weight ratio are that 0%-20%wt mixes by the powder weight ratio of step 1 screening, utilize sintering process or the extrusion molding extrusion forming composite antibacterial active carbon stick of heating.
Further, described master batch moulding utilizes kneader kneaded and formed, and setting kneader temperature is 120-180 DEG C, shears and mixes, and in the time that material temperature in kneader reaches 200-250 DEG C, the complete melting of cakingagent also mixes with complex antimicrobials, cooling and get final product.
Further, described master batch moulding utilizes extruder for shaping.
Further, the zirconium phosphate that described complex antimicrobials is 1:4 by weight ratio carries silver and soluble glass carries silver and forms.
Further, described cakingagent is one or more in high density polyethylene, linear low density polyethylene LLDPE, polypropylene PP, polyvinyl resin with super-high molecular weight UHMWPE.
Further, the particle diameter of described activity charcoal powder is 40-400 order.
A kind of composite antibacterial active carbon stick of being prepared by described method.
Adopt after such scheme, the complex antimicrobials that the present invention is 20%-50%wt by weight ratio and weight ratio are that the cakingagent of 50%-80%wt mixes, heating makes cakingagent melting, after cooling, cause master batch through tablets press, recycling Lowtemperaturepulverizer, in the lower pulverizing of very low temperature (lower than the temperature of the liquid-air of-263 degrees Celsius), be ground into composite antibacterial master batch powder, filtering out particle diameter is the powder between 50-100 order; Engage blend with resin in advance by complex antimicrobials, then pulverize, complex antimicrobials mixes with cakingagent, complex antimicrobials is evenly distributed, and bonding firmly, then adds sintering or extrusion moulding in activity charcoal powder and cakingagent, complex antimicrobials distributes more even, make complex antimicrobials adhesive power stronger, antibacterial effect is better, and the silver ions conformance with standard of complex antimicrobials in water, and silver ions is separated out and is less than or equal to 0.05mg/L.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment mono-
A kind of composite antibacterial active carbon stick preparation method
1, prepare molecular sieve and mediate master batch, complex antimicrobials powder is accounted for to 50%wt, account for 50%wt with HDPE resin, drop into kneader.Mix and mediate 20-25 minute with 175 DEG C of temperature, unload the material piece mixing cooling, then drop in pulverizer and be ground into small-particle, utilize afterwards Lowtemperaturepulverizer cryogrinding, screening diameter is 50-100 object composite antibacterial toner.
2, preparation is containing the carbon rod of composite antibacterial toner, by composite antibacterial toner prepared in above-mentioned 1 account for 16%wt, activity charcoal powder accounts for 67%wt, HDPE and LLDPE mixture account for the mixed machine of 17% feeding one low speed companion, mix approximately 10 minutes, then, within compound being packed into carbon rod mould, cover chock plug formula upper end cover.Mould is moved in sintering oven and to set furnace temperature sintering 35 minutes with 260 DEG C, then take out mold cools down it.Open mould and eject the carbon rod being shaped.Reference examples one
A kind of anti-microbial activity carbon rod preparation method
1, activity charcoal powder is accounted for to 67%wt, complex antimicrobials powder ... account for the mixture of 8%wt, HDPE and LLDPE ... account for 25%wt and feed a low speed and mix mixed machine, mix approximately 15 minutes.Then be filled in mould.Mould is moved in sintering oven to set 260 DEG C of sintering of furnace temperature 35 minutes, take out mould, open mould after cooling to prepare carbon-point.
Above-mentioned two kinds of carbon rods (reference examples one and embodiment mono-) are respectively installed in carbon rod filter, then pass into the water quality analysis after tap water filters, its result can be compared by the data of table one.The carbon rod formula of reference examples one is directly to add complex antimicrobials 8%wt, washes away in use molecular sieve powder ooze out morely at tap water, and therefore the turbidity of water outlet is higher.Embodiment mono-, use molecular sieve to mediate master batch 18%wt (master batch is made up of with 50%wt antiseptic-germicide powder molecular sieve powder 50%wt HDPE and LLDPE hybrid resin), that is in carbon rod, reality also contains 8%wt complex antimicrobials.Use molecular sieve powder to separate out seldom, water outlet quality is good, and turbidity is little, and its dechlorination is effective with deleading.In carbon rod, adopting complex antimicrobials toner is as can be seen here good than directly adopting antiseptic-germicide powder.
Table one
As can be seen from the results, the carbon-point of reference examples is because antiseptic-germicide does not have resin-coated, so can be washed away, cause initial stage water turbidity, and concentration of silver ions exceed standard (national drinking water standard require in water concentration of silver ions will below 0.05mg/L), long-time mistake after water, finds to lose antibacterial effect because antiseptic-germicide is flushed away.
Embodiment bis-
A kind of composite antibacterial active carbon stick preparation method
1, prepare molecular sieve and mediate master batch, complex antimicrobials powder is accounted for to 30%wt and PP resin accounts for 70%wt, in input kneader.Mix and mediate 30-35 minute with 165 DEG C, unload the material piece mixing cooling, then drop in pulverizer and be ground into small-particle, utilize afterwards Lowtemperaturepulverizer cryogrinding, screening diameter is 50-100 object composite antibacterial toner.
2, preparation is containing the carbon rod of composite antibacterial toner, composite antibacterial PP toner prepared in above-mentioned 1 is accounted for to 20%wt, activity charcoal powder account for 70%wt, UHMWPE polyvinyl resin with super-high molecular weight accounts for 10%wt, feed the mixed machine of a low speed companion, mix approximately 15 minutes, then compound is packed in carbon rod mould, covers chock plug formula upper end cover.Mould is moved in sintering oven with 260 DEG C of furnace temperature sintering 30 minutes, then take out mold cools down it.Open mould, eject the carbon rod being shaped.
Reference examples two
A kind of active carbon loading silver carbon rod preparation method that adds
1, active carbon loading silver powder is accounted for to 70%wt, UHMWPE ultrahigh molecular weight polyethylene(UHMWPE) and account for 30%wt and feed the mixed machine of a low speed companion, mix approximately 15 minutes.Then in filling progressive die tool.Mould is moved in sintering oven with 260 DEG C of sintering of furnace temperature 30 minutes, take out mould, open mould after cooling
Tool prepares Zeolite modifying carbon rod.
Table two
In reference examples three due to silver ions and activity charcoal powder cohesive force not strong, cause silver ions easily to precipitate in water, cause concentration of silver ions in the aqueous solution to exceed standard.
Embodiment tri-
A kind of composite antibacterial active carbon stick preparation method
1, complex antimicrobials is accounted for to 20%wt (complex antimicrobials carries silver and soluble glass by zirconium phosphate, and to carry silver-colored weight ratio be that 20%:80% forms) and account for 80%wt with PP resin, in input kneader.Mix and mediate 40 minutes with 170 DEG C, unload the material piece mixing cooling, then drop in pulverizer and be ground into small-particle, utilize afterwards Lowtemperaturepulverizer cryogrinding.Screening particle diameter is 50-100 object composite antibacterial toner.
2, preparation is containing the sintering carbon rod of complex antimicrobials toner, by complex antimicrobials toner prepared in above-mentioned 1 account for 30%wt, activity charcoal powder accounts for 70%wt, feeding one low speed mixer, mix approximately 10 minutes, then compound is packed in carbon rod mould, covers chock plug formula upper end cover.Mould is moved in sintering oven with the setting furnace temperature sintering of 230 DEG C 30 minutes, then take out mould and treat cold.Open mould, obtain the carbon rod being shaped.
Reference examples three
A kind of antibacterial sintering carbon rod preparation method of multilayered structure
1, activity charcoal powder is accounted for to 75%wt, zirconium base silver ion antimicrobial agent account for 5%wt, UHMWPE resin accounts for 20%wt and feeds the mixed machine of a low speed companion, mix approximately 20 minutes, be then filled in mould.Mould is moved in sintering oven to set 255 DEG C of sintering of furnace temperature 20 minutes, take out mould, open mould after cooling, eject the sintering carbon rod containing antibacterial powder being shaped.Again silver-plated non-woven fabrics is coated on to carbon-point skin and internal layer.Obtain the anti-microbial activity carbon rod of multilayered structure.
Table three
In reference examples three, add antibacterial nonwoven cloth made and can tackle a part of inorganic antibacterial powder, prevent from being flushed away, but short grained powder still can flow out, simultaneously because non-woven fabrics is silver-plated, easily precipitate in water, cause concentration of silver ions in the aqueous solution to exceed standard.
Embodiment tetra-
A kind of composite antibacterial active carbon stick preparation method
1, the antibacterial matrices of first preparing twin screw extruder and being made, accounts for 60%wt by PP resin, and complex antimicrobials antiseptic-germicide accounts for 40%wt, and one coexists in high-speed mixer mixes 10 minutes, then drops into and in twin screw extruder, carries out extruding pelletization.The grain of gained is twin-screw extrusion antibacterial matrices.Composite antibacterial master batch is carried out to cryogrinding with Lowtemperaturepulverizer, and screening particle diameter is the antibacterial resin powder between 50-100 order.
2, the sintering carbon rod that preparation contains twin-screw extrusion composite antibacterial toner, above-mentioned 1 prepared twin-screw extrusion composite antibacterial toner is accounted for to 25%wt, activity charcoal powder to be accounted for 65%wtUHMWPE resin and accounts for 10%wt and feed a low speed mixer, mix approximately 10 minutes, then compound is packed in carbon rod mould, covers end cap.Mould is moved in sintering oven with the setting furnace temperature sintering of 260 DEG C 25 minutes, then take out mould and treat cold.Open the carbon rod that obtains shaping after mould.
To carry out respectively water filtration detection with the obtained carbon rod of above-mentioned example.Its result is as shown in table one, table two and table three.Bacterium colony group number system is surveyed it according to GBT5750.12 method, and turbidity is surveyed it with GBT5750.4 method.Silver ions is surveyed it with GBT5750.6 method.Above water quality detection result, all confirms to use kneader to cohere in advance the carbon rod of modification agent master batch, and its powder is separated out or exudatively obtained larger improvement, and not only turbidity met family's standard, and modification agent runs off few.
Claims (7)
1. a composite antibacterial active carbon stick preparation method, is characterized in that, comprises the following steps:
One, the complex antimicrobials that is 20%-50%wt by weight ratio and weight ratio are that the cakingagent of 50%-80%wt mixes, heating makes cakingagent melting, mix with complex antimicrobials, after cooling, cause master batch through tablets press, recycling Lowtemperaturepulverizer is pulverized under very low temperature, be ground into composite antibacterial master batch powder, filtering out particle diameter is the powder between 50-100 order;
Two, be that 10%-30%wt, activity charcoal powder weight ratio are that 50%-85%wt and cakingagent weight ratio are that 0%-20%wt mixes by the powder weight ratio of step 1 screening, utilize sintering process or the extrusion molding extrusion forming composite antibacterial active carbon stick of heating.
2. a kind of composite antibacterial active carbon stick preparation method as claimed in claim 1, is characterized in that, described master batch moulding utilizes kneader kneaded and formed, and setting kneader temperature is 120-180
, shear and mix, when material temperature in kneader reaches 200-250
time, the complete melting of cakingagent also mixes with complex antimicrobials, cooling and get final product.
3. a kind of composite antibacterial active carbon stick preparation method as claimed in claim 1, is characterized in that, described master batch moulding utilizes extruder for shaping.
4. a kind of composite antibacterial active carbon stick preparation method as claimed in claim 1, is characterized in that, the zirconium phosphate that described complex antimicrobials is 1:4 by weight ratio carries silver and soluble glass carries silver and forms.
5. a kind of composite antibacterial active carbon stick preparation method as claimed in claim 1, it is characterized in that, described cakingagent is one or more in high density polyethylene, linear low density polyethylene LLDPE, polypropylene PP, polyvinyl resin with super-high molecular weight UHMWPE.
6. a kind of composite antibacterial active carbon stick preparation method as claimed in claim 1, is characterized in that, the particle diameter of described activity charcoal powder is 40-400 order.
7. the composite antibacterial active carbon stick that prepared by the method as described in claim 1 to 6 any one.
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Cited By (8)
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| CN104528897A (en) * | 2014-12-08 | 2015-04-22 | 厦门建霖工业有限公司 | Antibacterial carbon rod and making method thereof |
| CN104609527A (en) * | 2015-01-08 | 2015-05-13 | 厦门建霖工业有限公司 | Antibacterial negative potential ball as well as preparation method and application thereof |
| CN105731559A (en) * | 2016-02-03 | 2016-07-06 | 惠州市银嘉环保科技有限公司 | Ultrafiltration anti-microbial activated carbon bar and preparation method thereof |
| CN105964221A (en) * | 2016-05-25 | 2016-09-28 | 绍兴文理学院 | Composite carbon rod based on waste wool granular active carbon and preparation method for composite carbon rod |
| CN106999819A (en) * | 2014-11-24 | 2017-08-01 | 荷兰联合利华有限公司 | Method for preparing extrusion carbon block |
| CN107570114A (en) * | 2017-09-18 | 2018-01-12 | 惠州市银嘉环保科技有限公司 | A kind of super passage ultrafiltration effect active carbon stick and preparation method thereof |
| CN112806388A (en) * | 2019-11-15 | 2021-05-18 | 银未来株式会社 | Antibacterial product, antibacterial rod and water storage container |
| CN114349138A (en) * | 2022-01-11 | 2022-04-15 | 佛山市芯耀环保科技有限公司 | Scale-inhibiting antibacterial material and preparation method thereof |
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| CN106999819A (en) * | 2014-11-24 | 2017-08-01 | 荷兰联合利华有限公司 | Method for preparing extrusion carbon block |
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| CN107570114A (en) * | 2017-09-18 | 2018-01-12 | 惠州市银嘉环保科技有限公司 | A kind of super passage ultrafiltration effect active carbon stick and preparation method thereof |
| CN112806388A (en) * | 2019-11-15 | 2021-05-18 | 银未来株式会社 | Antibacterial product, antibacterial rod and water storage container |
| CN114349138A (en) * | 2022-01-11 | 2022-04-15 | 佛山市芯耀环保科技有限公司 | Scale-inhibiting antibacterial material and preparation method thereof |
| CN114349138B (en) * | 2022-01-11 | 2023-09-08 | 佛山市芯耀环保科技有限公司 | Scale inhibition antibacterial material and preparation method thereof |
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Effective date of registration: 20160826 Address after: Tianfeng road in Jimei District of Xiamen City, Fujian Province, No. 67 361000 Patentee after: Xiamen Bailin water purification technology Co. Ltd. Address before: The North Industrial Zone of Jimei Tianfeng road Xiamen City, Fujian province 361021 No. 69 Patentee before: Xiamen Runner Industrial Corporation |