CN1137766C - Making-process of active sintered microfiltering film - Google Patents
Making-process of active sintered microfiltering film Download PDFInfo
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- CN1137766C CN1137766C CNB001107445A CN00110744A CN1137766C CN 1137766 C CN1137766 C CN 1137766C CN B001107445 A CNB001107445 A CN B001107445A CN 00110744 A CN00110744 A CN 00110744A CN 1137766 C CN1137766 C CN 1137766C
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Abstract
The present invention belongs to a production method for an active sintered micro-filtering film, which has the technical scheme that carbon active fibers are used as a main material, ceramics, high molecular material powder or manufactured products are used as skeletal materials, and pertinent stuffing is added; the sintered method is characterized in that the integral active micro-filtering film with high intensity is produced through high-power cutting type blending, filling, enhancement, modification, extrusion forming, melting sintering, cooling and postprocessing. The present invention has the advantages of good form and randomness of products, and the products can be made into plates, pipes, columns, disks, honeycomb bodies or anomalous bodies.
Description
The present invention relates to a kind of environmental protection film engineered composite material, particularly a kind of making-process of active sintered microfiltering film.
In environmental purification technology, the filter medium that liquid phase, gas phase filter element use is various in style.The sintered membrane with metal, pottery, macromolecular material preparation is extensively adopted in present domestic beginning, and gets the nod.Its method for making: be that to select the powder of metal, pottery, macromolecular material or fiber for use be raw material, through pulverize, shortly cut, sieve classification, size according to filtered particles, filtering accuracy, utilization are piled up theory and are carried out the preparation of raw material granularity, mixing, moulding, sintering, cooling and solidify and make the crooked porous material that connects.This sintered membrane is pressed the pore size filter size, is divided into coarse filtration, micro-filtration.Because this kind sintered membrane active site is few, can only be to the function of liquid phase, gas phase performance filtration, and the duct resistance is big, nonelastic, liquid, air flux are little, equipment volume is big relatively, and backwash effect is poor, easily fouling and obstruction duct, particularly can't realize that to the inorganic of ion level or organic impurities filter element its application is restricted.Want to remove liquid phase, the inorganic or organic impurities of gas phase intermediate ion level, particularly poisonous, harmful impurity and bacterium, microorganism etc.At present active adsorbing material or hollow fiber ultrafiltration membrane etc. of adopting more.Earlier 1990s, the 4th generation the goods such as felt, paper, cloth, silk of efficient sorbing material-activated carbon fiber step into suitability for industrialized production, application is extensive, has widened the activated adoption unit.Its method for making: be to select for use organic fiber (as viscose glue base fiber, pan based fibers, pitch-based fiber, polyvinyl alcohol based fibre, phenolic aldehyde base fiber, synthetic basic fiber etc.) to obtain having highly developed microcellular structure through preliminary treatment, carbonization, activation, post processing, specific area is big, the adsorption capacity height, adsorption desorption speed is fast, the activated carbon fiber of good purification.This active adsorbing material can be under simple condition, and desorption and regeneration fully, and the loss adsorption function is minimum has both characteristics such as acidproof, alkaline-resisting, corrosion-resistant, high-low temperature resistant simultaneously.
Activated carbon fiber is very excellent to the organic matter adsorption function in liquid phase, the gas phase, and adsorption capacity is big, and concentration range is wide, can handle high concentration, also can handle the absorbate of trace or trace.While processing accuracy height, adsorption rate is higher more than 100 times than granular activated carbon.Be widely used in air cleaning, water purifies, wastewater recycling process, and organic solvent reclaims, high purity water production, decolouring, high-tech such as deodorizing purify, and separate, and reclaim in the technology.
Yet, domestic activated carbon fiber and goods thereof, in application practice, dull sale always, its main cause has three aspects: 1, technical indicator should fitting property, give poor selectivity.2, immersion resistance, anti-bursting, impact, anti-folding, tensile strength are low, especially lower through the desorption and regeneration intensity index, can't be in liquid phase, gas phase is medium-term and long-term uses general 3～6 months life-spans.3, cost height, general universal 500～1000 yuan/KG, user are difficult to accept.The present invention is directed to above-mentioned filtration, the problem that exists in the original technology of material that uses in the absorbing unit process or medium through fully development and practice, is simplified the unit flow process, improves comprehensive effect.The mechanism of utilization Modern Composite Materials, with two or more different materials, be major ingredient with the activated carbon fiber promptly, the powder or the fibre that are equipped with pottery, macromolecular material are aggregate, and are aided with the specific aim filler, carry out the blend of high power cutting type, fill, strengthen modification, extrusion forming, molten sintering, cooling, the sintered membrane that post processing obtains is high-strength, micro-filtration structure and efficient absorption one turn to feature.Its goods form randomness is good, can be made into plate, pipe, post, dish, honeycomb ceramics or obform body.
The purpose of this invention is to provide a kind of making-process of active sintered microfiltering film.
The present invention is achieved in that making-process of active sintered microfiltering film is that employing is a major ingredient with the activated carbon fiber, the powder or the fibre that are equipped with pottery, macromolecular material are aggregate, and be aided with the specific aim filler, carry out the blend of high power cutting type, fill, strengthen modification, extrusion forming, molten sintering, the sintering method that high-strength active micro-filtration one turns to feature is made in cooling, post processing.
One, material component, proportioning, the effect of preparation active sintered microfiltering film.
1, major ingredient: activated carbon fiber, look the processing object, liquid phase, gas phase media condition difference are selected the viscose glue base for use, polyacrylonitrile-radical, asphaltic base, synthetic base etc.Adapt to every targetedly absorption index, absorption is adsorbed pore diameter range etc. easily.Can or make by oneself from commercially available activated carbon fiber product in the extraordinary activated carbon fiber product and select.Lack as requested then and cut, require fibre diameter 5-20 μ m; Length 0.2-6mm; Addition accounts for the 20-80% weight ratio; Give full play to the efficient adsorption function of activated carbon fiber.
2, aggregate: porous ceramic film material, as porcelain powder, alumina silicate, diatomite, glass dust, glass microballoon, glass fibre.
I. macromolecular material: polyethylene, polypropylene, polyacrylonitrile etc.
Ii. should adopt high-strength, HMW, the high melting point trade mark in selecting for use, the powder particle size scope by the filtering holes size, requires proportioning according to piling up theory, generally is applied as the 20-400 order, fibre diameter 0.5-30 μ m, length 0.2-6mm as far as possible; Addition accounts for the 15-60% weight ratio; Fully form microcellular structure, and play the support skeleton, the function of viscose fibre.
3 fillers and other: owing to handle condition of work difference in object, liquid phase, the gas phase media, chemistry, physical property is different, requires function difference very big, as intensity, aqueous vapor flux, pollutant holding capability or particular filter is arranged, absorption requirement etc., need add following material:
Reinforcement: can add Fypro, alumina fibre, carbon fiber, glass fibre etc.
Fibre diameter 5-30 μ m, length 2-8mm; Addition accounts for 5-20%.
Coupling agent: silane coupler commonly used.
Bonding agent: paraffin, waterglass, paper pulp, polyvinyl alcohol water solution, starch etc.
Pore former: wooden carbon, wood powder, coke powder, paraffin, molding powder, inorganic salts.
Releasing agent: graphite powder, mica powder, fossil meal etc.
Sterilization, inhibition bacteriocin: triiodide resin, high-purity copper Zinc alloy powder etc.
Two, sintering mechanism and control: above-mentioned major ingredient, aggregate, filler etc. are pressed the filtering holes warp of design in advance, absorption, indexs such as intensity are rationally prepared burden, and even cutting type blend is carried out in strictness, fill timely and appropriately, strengthen modification, improve the each component material compatibility, look the different of raw material and finished size simultaneously, rationally formulate firing process, determine sintering temperature, temperature retention time adds gentle rate of temperature fall and ambiance.
Generally selecting ceramic material for use is that aggregate needs to carry out sintering under nitrogen protection, 120-600 ℃ of scope of heating of strict control, and its speed of heating is difficult for too high, finally sinters temperature 900-1200 ℃ into, and temperature retention time is about 30 minutes.
Selecting macromolecular material for use is aggregate, needs to carry out sintering under nitrogen protection, and firing temperature is looked raw material and finished size the different 50-260 of being controlled at ℃, and 20 ℃～30 ℃ of the speed of heating were advisable in temperature retention time 2-2.5 hour.
When ceramic material or macromolecular material are aggregate, need after abundant blend, the auxiliary material of the filling of timely and appropriate discovery, evenly the back is by frock, adds to press fit in the mould, requires arming bed of material trace, the compacting densification.Particularly complex-shaped to guarantee to fill full.
After covering loam cake; check steam vent; mould is sent into the anti-oxidation of logical nitrogen in the roaster; guarantee that each workpiece heats evenly; and undertaken by the firing process that pre-establishes, workpiece is molten sintering at high temperature, makes particulate or fiber surface softening; because the gravity of sintering feed and surface tension trend increase the bulk density of particulate, reduce specific area.So cause contact area increasing between particulate or fiber, and interact and strengthen, after the reduction temperature, be bonded to each other, stay the space between particulate or fiber, form perforation or mesh, the curing back is a porous material.Note adding the service regeulations of reinforcement coupling agent, rationally arrange sintering process, take out stains in good time, guarantee that the duct is smooth, flexible, help the backwash or the Chemical cleaning of finished product like this, recover to filter, the function of absorbing unit, product after burning till conscientiously post processing strictly can be preserved and be used with vacuum-packed.
The present invention compared with prior art, with water purification catridge, filtering the water yield is example for 5 tons.
Project prior art prior art dielectric material macromolecular material of the present invention activated carbon fiber composite material film engineering unit filters adsorption filtration absorption integrated machine intensity, and (8mm is thick; Aperture 30 μ m, filter core) activated carbon fiber 30g contain in the activated carbon fiber 30g burst pressure＞2MPa extremely low＞above ion filter 01～120 μ m of 180 ℃＜120 ℃ pore diameter ranges of 1.2MPa adaptive temperature＜80 ℃ aerobic, 0.5～120 μ m 3nm
Absorption 3nm above ion is smelt flavor, and------90% 90% carbon tetrachloride--98% 98% chloroforms--96% 96% total number of bacteria--, the 100% 100% anti-excellent differences of performance of soaking are excellent for 100% 100% Volatile Phenols in 100% 100% dechlorinations
Below in conjunction with embodiment the present invention is done to describe in detail.
Embodiment 1
With the viscose glue base fluid facies pattern activated carbon fiber of 100 parts of Unit Weights, silk is through 5-20 μ m, length 0.5-6mm, specific area 1000-1500m
2/ g, serge blue adsorptive value 150-200mg/g; The polyethylene powder of 60 parts of Unit Weights (its high low density polyethylene (LDPE) powder mixed by 3: 1) particle diameter 325 order percent of pass account for 85%; 10 parts of Unit Weight glass fiber, by coupling agent treatment, silk footpath 5-30 μ m, length 2-6mm, the Fypro 66 of 5 parts of Unit Weights, silk footpath 20-50 μ m, long 2-6mm; The high-purity copper Zinc alloy powder of 2 parts of Unit Weights, particle diameter 200 orders.Add the moulding medicament through fully cutting type blend, drying adds and presses fit in the hollow belt round-ended cylinder mould, and pore is stayed in capping; send in the nitrogen protection roaster and heat 80-200 ℃, heating rate 20-30 ℃, to firing temperature, be incubated 2 hours and come out of the stove; heat is loosed core, and water for cooling goes out finished product.Firing sample is of a size of: external diameter 60mm, internal diameter 32mm, base thickness 15mm, length 260mm.For filter element of water purifier.
Embodiment 2
Phenolic aldehyde base dechlorination type activated carbon fiber (self-control) with 100 parts of Unit Weights, silk footpath 5-20 μ m, length 0.5-6mm, the coconut husk liquid phase type activated carbon powder of 10 parts of Unit Weights, particle diameter 100 orders, high-strength polyethylene powder 180 orders of 60 parts of Unit Weights, the polyacrylonitrile fibre of percent of pass 90%:8 part Unit Weight, silk footpath 20-50 μ m, length 2-6mm, high-purity copper Zinc alloy powder 200 orders of 2 parts of Unit Weights.Add the moulding medicament through fully cutting type blend, drying adds and presses fit in the hollow belt round-ended cylinder mould, and pore is stayed in capping; send in the nitrogen protection roaster and heat 80-230 ℃, heating rate 20-30 ℃, to firing temperature, be incubated 2 hours and come out of the stove; heat is loosed core, and water for cooling goes out finished product.Firing sample is of a size of: external diameter 60mm, internal diameter 32mm, base thickness 15mm, length 260mm.
Embodiment 3
With the polyacrylonitrile based activated carbon fiber of 80 parts of Unit Weights, silk footpath 10-20 μ m degree 0.5-6mm, specific area 850-1000m
2/ g, serge blue adsorptive value 200mg/g; Viscose glue base fluid facies pattern activated carbon fiber (self-control) micropore 20～40 dusts of 20 parts of Unit Weights account for more than 50% iodine sorption value 1000mg/g; The high-strength polyethylene powder 180 order percent of pass of 65 parts of Unit Weights account for the high melting point polyacrylonitrile fibre of 90%:10 part Unit Weight, silk footpath 20-50 μ m, length 2-6mm, high-purity copper Zinc alloy powder 200 orders of 3 parts of Unit Weights.Add the moulding medicament through fully cutting type blend; drying, screw press are packed at the bottom of the hollow belt or are not with in the round-ended cylinder mould, and pore is stayed in capping; send in the nitrogen protection roaster; heat 150-240 ℃, heating rate 30-40 ℃, to firing temperature; being incubated 2.5 hours comes out of the stove; heat is loosed core, and water for cooling goes out finished product.Firing sample is of a size of: external diameter 38mm, internal diameter 20mm, base thickness 15mm, length 1000mm.The fuel feeding field contains in the purification of selenium Drinking Water uses.
Claims (2)
1, a kind of making-process of active sintered microfiltering film is characterized in that: be major ingredient with the activated carbon fiber, addition accounts for the 20-80% weight ratio; Be equipped with glass fibre, the macromolecular fibre goods are aggregate, addition accounts for the 15-60% weight ratio; And be aided with the specific aim filler, comprise pore former, bonding agent, coupling agent etc., addition 5-20% weight ratio; Carry out the blend of high power cutting type, filling, enhancing modification, extrusion forming, molten sintering, heating-up temperature heating rate 20-30 ℃, is incubated 2-2.5 hour, the sintered membrane that lower the temperature, post processing manufacturing high-strength active micro-filtration one turns to feature at 50-260 ℃.
2, by the described making-process of active sintered microfiltering film of claim 1, it is characterized in that, wherein: activated carbon fiber, fibre diameter 5-20 μ m, length 0.2-6mm; Macromolecular fibre, fibre diameter 0.5-30 μ m, length 0.2-6mm; Glass fibre, fibre diameter 5-30 μ m, length 2-8mm, and carry out silane coupler and handle, add the specific aim filler and comprise pore former, bonding agent or sterilization bacteriostat etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001107445A CN1137766C (en) | 2000-08-01 | 2000-08-01 | Making-process of active sintered microfiltering film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001107445A CN1137766C (en) | 2000-08-01 | 2000-08-01 | Making-process of active sintered microfiltering film |
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| CN1336248A CN1336248A (en) | 2002-02-20 |
| CN1137766C true CN1137766C (en) | 2004-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001107445A Expired - Fee Related CN1137766C (en) | 2000-08-01 | 2000-08-01 | Making-process of active sintered microfiltering film |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102210954B (en) * | 2011-06-01 | 2013-04-24 | 戴志强 | Solid-liquid separation composite filter board and preparation method thereof |
| CN102633532B (en) * | 2012-04-10 | 2013-05-29 | 清华大学 | High-temperature and high-pressure inorganic filter membrane and preparation method thereof |
| CN104289019B (en) * | 2014-09-26 | 2017-02-15 | 大同宇林德石墨设备股份有限公司 | Carbon fiber reinforced carbon sintered tube and manufacturing method thereof |
| CN108349754A (en) * | 2015-08-03 | 2018-07-31 | 霍尼韦尔国际公司 | Water filtration media and device |
| CN105347832B (en) * | 2015-12-03 | 2019-08-16 | 泉州凯佳新材料研究院有限公司 | Coiled carbon fibers composite ceramics for activated water and preparation method thereof and application |
| CN110124394A (en) * | 2019-05-13 | 2019-08-16 | 江西虔农农业股份有限公司 | A kind of preparation method of selenium-rich titanium-based filtering element for treating water |
| CN110745909A (en) * | 2019-10-23 | 2020-02-04 | 李天栋 | Preparation method of nano-scale ultrafiltration biological integrated membrane |
| CN112007428B (en) * | 2020-09-07 | 2022-12-16 | 洛阳理工学院 | Composite sintered plate, preparation method thereof and sintered plate type dust remover |
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