CN103557046A - Screen mesh formed by weaving reinforced fiber and stainless steel wires in mixed mode - Google Patents
Screen mesh formed by weaving reinforced fiber and stainless steel wires in mixed mode Download PDFInfo
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Abstract
The invention relates to a screen mesh formed by weaving reinforced fiber and stainless steel wires in a mixed mode. The screen mesh is characterized by including the following steps that (1) stainless steel fiber filaments are made of stainless steel wires with the diameter ranging from 0.2 to 0.4mm, and the reinforced fiber is made of a carbon fiber bundle and a basalt fiber bundle reinforced through phenolic aldehyde or a rope or a carbon fiber bundle and a basalt bundle reinforced through petroleum resin; (2) an industrial screen mesh weaving machine is adopted to conduct mixed crocheting, threads of the stainless steel fiber filaments and the reinforced fiber filaments are fed and woven according to the ratio of 10:1-1:1; (3) a wire wheel of the reinforced fiber is added on one side of a wire wheel of the stainless steel wires, and two branches of fiber are fed and woven simultaneously; (4) after weaving is finished, when a binder is phenolic resin, a solvent composed of tap water and alcohol according to the ratio of 1:2 is used for removing the binder, at the room temperature, ultrasonic rinsing is conducted for 10-20 min; when the binder is petroleum resin, odourless kerosene is used for removing the binder, and ultrasonic rinsing is conducted for 20-30 min at the temperature of 40-50 DEG C; (5) finally, at the temperature of 400-500 DEG C, the mixed woven screen mesh is sintered. The screen mesh has a three-dimensional structure, guarantees the mechanical strength, has a micropore structure, can be used for manufacturing a PM filter and is clever in idea, simple in process, low in cost and the like.
Description
Technical field
The present invention relates to the silk screen of a kind of reinforced fiber and Stainless Steel Wire shuffling, for the preparation of DOC, POC, the carrier material of the particulate matter preprocessor of CSF and similar DPF, also can be applied to the carrier material of SCR preprocessor.
Background technique
For automobile industry, energy-conserving and environment-protective are common issue with that Present Global faces; Although the fuel economy of diesel engine is higher than petrol engine,, because the discharge amount of the particulate of diesel engine is 20 ~ 70 times of petrol engine, therefore, the application of diesel engine is subject to certain restrictions;
In the pollutant of automobile, mainly comprise NOX and PM; All discharge quantity of particulate matter in atmosphere, the discharge amount of Motor Vehicle occupies the 3rd of total amount, approaches every year 600000 tons;
In Motor Vehicle granular material discharged, be mainly distributed in the scope that particle size is 2.5 ~ 10 μ m, referred to as PM2.5 ~ PM10, this class particle to greatly, becomes the emphasis of current motor vehicle exhaust emission purified treatment to the mankind's harm; Beijing state 5 standards that come into effect recently, the discharge quantity of stricter restriction PM2.5 ~ PM10 not only, and stipulated the restriction to all particulate matter number PN; Visible, the following post-processing technology for the treatment of PM2.5 ~ PM10 and equipment are more general;
At present, for the treatment of PM2.5 ~ PM10, be all to adopt DPF preprocessor both at home and abroad, this technology is monopolized by CORNING HeNGK company, and expensive price is the factor that becomes restriction and promote the use of at home, followingly also can face the problem of more market and use;
DPF is a kind of diesel particulates preprocessor of making filter core with foamed ceramics, has not through hole that filter area is increased, the micropore that has distributed on wall and differed in size in filter core, micropore diameter 8 ~ 16 μ m, porosity ratio 40% ~ 50%, channel width 2 ~ 3mm, wall thickness 0.30 ~ 0.45mm; Fresh DPF exemplar can reach 95% to PM treatment effect; After DPF particulate accumulation in use is a certain amount of, rear spray diesel combustion heating, burns the particulate being deposited on filter core, realizes and regenerating, and theoretically, DPF can be permanently effective;
The mechanism of particle filtering is the combination that compresses effect, thermal effect and electrical effect; Utilize carrier to the holding back and colliding of particle, and the diffusion of particle self and the acting in conjunction of gravitational settling realize purifying and remove; Wherein, compress effect and refer to the slightly subflexuose micropore on matrix, be equivalent to the effect of filter cake and filter bed, when PM particle is forced through these micropores, is dammed and collect, reach filtering effect,, form certain thickness filter bed most critical here; Thermal effect refers to and can be understood as isochoric heat effect, and when the particulate of a nanoparticle size is under higher temperature conditions, thermal vibration frequency is accelerated, and the track of Brownian movement is more tortuous, thereby, increased the possibility being trapped; And electrical effect refers in motion that the friction between thing and between particulate matter and wall makes it surface with electric charge, even if may having passed through macropore above, it also likely by means of electrostatic interaction, by the next one, is slightly held back and elimination in large-sized hole;
How to select new material and technique, the macrostructure of the design filter of science and microstructure are important problems;
To the basic demand of particulate filter, be to possess compared with filtration efficiency and lower exhaust resistance; The performance of particulate filter is affected by the many factors such as filter structure parameter and flow parameter, and filter efficiency and exhaust resistance often exist again the trade-off relation of conflicting and mutual restriction; In particular filter structure parameter, particulate filter length, port number, channel width and wall thickness have determined length and the area of section of filter, and they not only can have influence on the overall performance of particulate filter; Increase particulate filter length and area of section and can effectively improve the filter efficiency of particulate filter and reduce gas-flow resistance, but be subject to the restriction of the installing space of vehicle; The maximum airflow resistance of the particulate filter of standard code vehicle generally will be controlled at below 10kPa, and in addition, particulate filter also must meet the features such as mechanical strength, thermal stress impact and manufacturing process are easy; The carrier new material that must rely on of above-mentioned characteristic is realized;
The patent No. is the diesel motor exhaust carbon soot particles catcher/filter patent of CN201020287676.0, in drum housing, to be provided with the stainless (steel) wire of tight winding, on described stainless (steel) wire, be provided with backfin and belling, still, the perforation duct possessing is unfavorable for the trapping of molecule; The patent No. is the tail gas emission filter patent of CN200920053958.1, it is a concentric tube outsourcing glass, tail gas enters from the side, from center afterbody, overflow, what play a role in filtering is glass, and this structure exists the problem of air-flow skewness, in addition, the cycle pulse exhaust airstream of motor car engine will dispel glass to tear, and the life-span is short, lose efficacy very fast; The patent No. is the diesel particulate filter patent of CN200480026612.2, is the DPF ceramic monolith of the wall-flow type of conventional construction; The patent No. is the diesel particulate filter patent of CN200410055292.5, is the DPF Carboround of the auxiliary wall-flow type of a kind of FBC of employing additive, and oxide and the metal palladium catalyst of the oxide that has comprised vanadium, tungsten finally become CDPF; The patent No. is the honeycomb particulate filters patent of CN01816995.3, be a kind of along flow to axle have different wall as cellular multi-unit structure, be specifically applicable to diesel particulate filter, but it is also applicable to the cellular structure of part stream.Cellular structure thermal capacity gradually changes from entry end to outlet end; The patent No. is the exhaust gas particle filter of CN200810215253.5 and the process patent of manufacturing exhaust gas particle filter, is a kind of exhaust gas particle filter that adopts metallic foam support completely; The patent No. is the diesel engine soot particulates filter cartridge patent of CN201080028039.4, the diesel engine soot particulates filter that a kind of wire gaze of the wall-flow type of many of arranging according to certain way is reeled and formed; The patent No. is the diesel exhaust gas purifying filter patent of CN03804171.5, that filling has the granular ceramic porous article of tridimensional network and forms in filter container, the Mean particle diameter of described granular ceramic porous article is 4.0 ~ 20mm, described granular ceramic porous article within it portion have a large amount of artificial pores that form and with adjacent pore logical intercommunicating pore connected with each other, described in some, pore is partly exposed to the surface of described porous body.
The technological scheme adopting for realization processing particulate matter is not unique, and therefore, the automobile-used particulate matter filtrating equipment that exploitation is different from DPF is a technology that has very much challenge;
For the PM2.5 ~ PM10 particle disposal standard-required that faces the future stricter, some traditional filtering materials, for example, the net and the metal sintering felt that adopt common wire to weave, due to turbulence not, the quality of per unit volume is excessive and the shortcoming such as non-refractory and cannot being competent at, it is very ripe that the hook of the gas-liquid filter net of commodity is compiled technology and equipment, and its product has been widely used in industry and among the people, for example, the prepared gas-liquid filter net of stainless silk can still, be considered following stricter particulate matter limit value as the particulate burning purifying equipment material of vehicle exhaust, must adopt novel filter material, and the wire gaze and the gas-liquid filter net that on market, have 100% Stainless Steel Wire to work out, also there are some to take Stainless Steel Wire as main body, additionally add other metal or nonmetal wire, weave, form plying or the mixed gas-liquid filter net of knitting, for example, can adopt the Stainless Steel Wire of 10 strands with the Monel silk of 1 ~ 10 strand, or polyvinyl fiber silk, or polypropylene filaments, or polytetrafluoroethylene fiber mixes hook volume, the mesh size distribution of the gas-liquid filter net of prepared plying is more even, but, these existing plying gas-liquid filter net or high costs on market, or cannot adapt to 600 ℃ of above hot operation conditions of automobile-used preprocessor.
Summary of the invention
The object of the present invention is to provide the silk screen of a kind of reinforced fiber and Stainless Steel Wire shuffling, it introduces inorganic heat resistance fiber among existing Industrial Metal silk screen dexterously, increased the mutual mechanical constraint between steel fiber and inorfil, make it in the environment of tail gas high-speed, to be also unlikely to be blown and consume by air-flow, the reliability and stability of system are improved greatly, meet more harsh automobile emissions standards requirement, be conducive to automobile industry and reduce discharging; There is very high use value, be adapted to stricter reprocessing carrier material technology in future.
Technological scheme of the present invention is achieved in that the silk screen of a kind of reinforced fiber and Stainless Steel Wire shuffling, and by stainless steel fiber, reinforced fiber forms; Adopt ripe technology and equipment, according to plying, mix to hook to compile and pool capital; It is characterized in that concrete steps are as follows: 1) first stainless steel fiber is selected the Stainless Steel Wire that string diameter is 0.2 ~ 0.4mm, reinforced fiber is selected carbon fiber bundle and the basalt bundle through the carbon fiber bundle of phenolic aldehyde strengthening and basalt fibre bundle or rope or the strengthening of process petroleum resin; 2) adopt industrial pressuring silk screen loom to mix and hook volume, the thread of 1-stainless steel fiber and 2-reinforced fiber silk is woven in the ratio inlet wire of 10:1 ~ 1:1; 3) at the line of Stainless Steel Wire, take turns the line wheel that a side separately adds a reinforced fiber, on this aspect, two bursts of fiber chargings simultaneously participate in braiding simultaneously; 4) after having woven, when Bond is phenolic resin, removes and adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 10 ~ 20min; Or Bond is while being petroleum resin, removes employing tasteless kerosene, at the temperature of 40 ~ 50 ℃, ultrasound embathes 20 ~ 30min; 5) finally at the temperature of 400 ~ 500 ℃, shuffling silk screen carries out sintering.
Described reinforced fiber silk is that wire diameter of single wires is the carbon fiber bundle of 1K ~ 50K of 5 ~ 20 μ m, and the monofilament diameter of this carbon fiber bundle after phenolic aldehyde enhancement process is basalt fibre bundle or the rope of diameter 0.1 ~ 2mm of 3 ~ 20 μ m.
Described reinforced fiber silk is that the monofilament diameter after petroleum resin enhancement process is basalt fibre bundle or the rope of diameter 0.1 ~ 2mm of 3 ~ 20 μ m.
Described stainless steel fiber is FeCrAl heat-resistance stainless steel silk, adapts to 600 ℃ of above high temperature.
The line wheel of described knitting machine adopts 10 following line wheels inlet wire simultaneously, and two bursts of fiber chargings simultaneously participate in braiding simultaneously.
Good effect of the present invention is after Stainless Steel Wire and fiber tuft plying hook are knitted, according to the index definition of catalyst carrier, it has changed the microscopic characteristics of carrier material the most significantly, it is specific surface area parameter, the change of the water absorption rate of the carrier material of measuring unit volume in actual detection, can find out, the water absorption rate that this plying hooks the lamination coating of knitting improves greatly, shows that the micro-property of carrier material significantly improves; The result of analyzing according to filtration theory, optimize and improve material macrostructure and microstructure, ingeniously solved inorganic heat resistance fiber and introduced among existing Industrial Metal silk screen, increased the mutual mechanical constraint between steel fiber and inorfil, make it in the environment of tail gas high-speed, to be also unlikely to be blown and consume by air-flow, the reliability and stability of system are improved greatly, meet more harsh automobile emissions standards requirement, be conducive to automobile industry and reduce discharging; There is very high use value, be adapted to stricter reprocessing carrier material technology in future.
Accompanying drawing explanation
Fig. 1 is the structural representation of 1 strand of parallel carbon fiber bundle in the Stainless Steel Wire of 1 strand of shuffling of the present invention.
Fig. 2 is the structural representation of 1 strand of carbon fiber bundle of walking abreast in per share Stainless Steel Wire.
Fig. 3 is object construction schematic diagram of the present invention.
Embodiment
Below by embodiment, the present invention is further described, embodiment, for further illustrating feature of the present invention, is not equal to restriction the present invention, and the change of carrying out according to the present invention for those skilled in the art, within all should being included in protection scope of the present invention.
Embodiment 1
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, on industrial vapour-liquid filter screen knitting machine, weaves into vapour-liquid filter screen; After braiding, adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 20min, cleans greasy dirt; Tap water rinses once; Dry 1h in the baking oven of 80 ℃; Clip 60mm * 220mm net sheet, ' thickness ' of range estimation net sheet is about 2mm, weighs W1=18.698g; Put into distilled water 5min, take out, drench dry unnecessary moisture, weigh W2=19.652g, according to following formula, calculate the water absorption rate R=(W2-W1 of this carrier-pellet)/W1=5.1%
Embodiment 2
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in the Stainless Steel Wire of 1 strand therein, parallel carbon fiber bundle is 1 strand, this carbon fiber bundle is that the wire diameter of single wires after phenolic aldehyde enhancement process is the carbon fiber bundle of the 1K of 5 μ m, mixes and hook the shuffling silk screen of weaving into 10:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 20min, deresinate Bond; Tap water rinses once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, ' thickness ' of range estimation net sheet is about 5mm, weighs W1=24.844g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=33.953g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=36.67%
Embodiment 3
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in per share Stainless Steel Wire, parallel carbon fiber bundle is 1 strand, totally 10 strands, this carbon fiber bundle is that the wire diameter of single wires after phenolic aldehyde enhancement process is the carbon fiber bundle of the 1K of 20 μ m, mixes and hook the shuffling silk screen of weaving into 1:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 30min, deresinate Bond; Tap water rinses once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, ' thickness ' of range estimation net sheet is greater than 5mm, weighs W1=38.958g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=107.888g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=176.9%
Embodiment 4
As shown in Figure 1, adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in the Stainless Steel Wire of 1 strand therein, parallel carbon fiber bundle is 1 strand, this fiber tuft is that the monofilament diameter after phenolic aldehyde enhancement process is basalt fibre bundle or the rope of the diameter 1mm of 10 μ m, mixes and hook the shuffling silk screen of weaving into 10:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 25min, deresinate Bond; Tap water rinses once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, ' thickness ' of range estimation net sheet is about 5mm, weighs W1=22.442g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=31.662g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=41.1%
Embodiment 5
As shown in Figure 2,3, adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, 1 strand of carbon fiber bundle all walks abreast in per share Stainless Steel Wire, totally 10 strands, this fiber tuft is that the monofilament diameter after phenolic aldehyde enhancement process is basalt fibre bundle or the rope of the diameter 1mm of 18 μ m, mixes and hook the shuffling silk screen of weaving into 1:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 23min, deresinate Bond; Tap water rinses once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, ' thickness ' of range estimation net sheet is greater than 5mm, weighs W1=56.787g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=94.810g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=66.9%
The fiber of phenolic aldehyde strengthening of the present invention and the silk screen of Stainless Steel Wire shuffling, after having woven, adopt the solvent that tap water and alcohol are 1:2, and at room temperature, ultrasound embathes 10 ~ 20min, deresinate Bond; Because Bond used is phenolic resin, softener is one or both in ethylene glycol, glycerine or triethanolamine, Bond is easy to be dissolved containing spirituous water-soluble liquid infiltration, equally, residual micro-softener also can be dissolved falls, at a certain temperature, and additional Ultrasonic Conditions, be the speed in order to accelerate to remove; Because contain alcohol in the aqueous solution, therefore, temperature is unsuitable too high, and the longest 20min of time that ultrasound is processed is enough; Except the fiber of compiling in collaboration with the phenolic aldehyde strengthening on carrier that no-bonder is later, naturally unfold and come fully, increased greatly confusion degree and the seizure performance to PM of carrier;
The present invention mixes the reprocessing carrier material that hooks volume, in the production process of carrier, need at the temperature of 400 ~ 500 ℃, carry out sintering, even if washing is not thorough, these residual ' organically ' Bond compositions, by carbonization or burning-off, do not affect the performance of catalyzer;
In addition, according to aforesaid PM work principle of filter, the carrier filtering for PM is retaining the basis of fully many air-flow micro passages, try one's best support core ' compacting ', make its volume density higher, just easily realize high ash content saturation and filtration efficiency; This just requires carrier to want sufficient compacting, and therefore, the coating thickness on carrier will strictly be controlled, otherwise produce, stops up; In addition, core meaning of the present invention is that the fiber of phenolic aldehyde strengthening is the attribute that belongs to ' inorganic ', thermal expansion coefficient and carrier coating material are substantially suitable, or completely close, introduce the fiber of phenolic aldehyde strengthening in metallic carrier after, obviously can improve the adhesive effect of original pure metal fiber carrier to carrier coating material, prevent coming off of coating, in theory, 10:1 compiles in collaboration with the bonding strength 10% that silk screen can improve carrier coating on the whole, equally, 1:1's compiles in collaboration with the bonding strength 100% that silk screen can improve carrier coating on the whole;
Embodiment 6
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, does not add inorfil bundle, on industrial vapour-liquid filter screen knitting machine, weaves into vapour-liquid filter screen; Adopt tasteless kerosene, at the temperature of 40 ℃, ultrasound embathes 30min, removes the greasy dirt in braiding process; The alkaline water-soluble washing agent of 60 ℃ cleans 1 time, then uses tap water rinsing once; Dry 1h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, weighs W1=18.698g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=19.652g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=5.1%.
Embodiment 7
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in the Stainless Steel Wire of 1 strand therein, parallel carbon fiber bundle is 1 strand, this carbon fiber bundle is that the wire diameter of single wires after petroleum resin enhancement process is the carbon fiber bundle of the 1K of 8 μ m, mixes and hook the shuffling silk screen of weaving into 10:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt tasteless kerosene, at the temperature of 40 ℃, ultrasound embathes 30min, deresinate Bond; The alkaline water-soluble washing agent of 60 ℃ cleans 1 time, removes the greasy dirt in braiding process, then uses tap water rinsing once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, weighs W1=20.844g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=26.663g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=27.92%.
Embodiment 8
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in per share Stainless Steel Wire, parallel carbon fiber bundle is 1 strand, totally 10 strands, this carbon fiber bundle is that the wire diameter of single wires after petroleum resin enhancement process is the carbon fiber bundle of the 1K of 120 μ m, mixes and hook the shuffling silk screen of weaving into 1:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt tasteless kerosene, at the temperature of 50 ℃, ultrasound embathes 20min, deresinate Bond; The alkaline water-soluble washing agent of 60 ℃ cleans 1 time, removes the greasy dirt in braiding process, then uses tap water rinsing once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, weighs W1=35.335g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=111.236g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=214.8%
Embodiment 9
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, in the Stainless Steel Wire of 1 strand therein, parallel carbon fiber bundle is 1 strand, this fiber tuft is that the monofilament diameter after petroleum resin enhancement process is basalt fibre bundle or the rope of the diameter 1mm of 20 μ m, mixes and hook the shuffling silk screen of weaving into 10:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt tasteless kerosene, at the temperature of 40 ℃, ultrasound embathes 30min, deresinate Bond; The alkaline water-soluble washing agent of 60 ℃ cleans 1 time, removes the greasy dirt in braiding process, then uses tap water rinsing once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, weighs W1=22.442g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=27.887g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=24.26%
Embodiment 10
Adopting diameter is 10 strands of 0.35mmFeCrAl Stainless Steel Wires, 1 strand of carbon fiber bundle all walks abreast in per share Stainless Steel Wire, totally 10 strands, this fiber tuft is that the monofilament diameter after petroleum resin enhancement process is basalt fibre bundle or the rope of the diameter 1mm of 160 μ m, mixes and hook the shuffling silk screen of weaving into 1:1 on industrial vapour-liquid filter screen knitting machine; After braiding, adopt tasteless kerosene, at the temperature of 50 ℃, ultrasound embathes 20min, deresinate Bond; The alkaline water-soluble washing agent of 60 ℃ cleans 1 time, removes the greasy dirt in braiding process, then uses tap water rinsing once; Dry 3h in the baking oven of 80 ℃; Clip 100mm * 100mm net sheet, weighs W1=39.101g, puts into distilled water 5min, takes out, and drenches dry unnecessary moisture, weighs W2=93.212g, the water absorption rate R=(W2-W1 of carrier-pellet)/W1=138.39%
The present invention adopts the fiber of petroleum resin strengthening and the braiding of stainless steel plying, when Stainless Steel Fibre is 10 line wheels, and the fiber of petroleum resin strengthening is 1 o'clock, ratio is now 10:1, only now to take turns at stainless line the line wheel that a side separately adds a fiber after petroleum resin strengthening, on this aspect, two bursts of fiber chargings simultaneously participate in braiding simultaneously; And work as Stainless Steel Fibre, be 10 lines wheels, and the line wheel of the fiber of petroleum resin strengthening is also 10 o'clock, ratio is now 1:1; On the line of all Stainless Steel Wires wheel all extra increase the line wheel of fiber after a petroleum resin strengthening, on 10 points, two bursts of all chargings simultaneously of fiber participate in braiding simultaneously;
The fiber of petroleum resin strengthening of the present invention and the silk screen of Stainless Steel Wire shuffling, after having woven, adopt tasteless kerosene, and at the temperature of 40 ~ 50 ℃, ultrasound embathes 20 ~ 30min, deresinate Bond; Because Bond used is petroleum resin, softener is transformer oil or diesel oil, and Bond is easy to by tasteless kerosene, invaded profit and dissolve, equally, residual micro-softener also can be dissolved falls, at a certain temperature, and additional Ultrasonic Conditions, be the speed in order to accelerate to remove; Because tasteless kerosene, therefore, temperature is unsuitable too high, and the longest 30min of time that ultrasound is processed is enough; Except the fiber of compiling in collaboration with the petroleum resin strengthening on carrier that no-bonder is later, naturally unfold and come fully, increased greatly confusion degree and the seizure performance to PM of carrier;
The present invention mixes the reprocessing carrier material that hooks volume, in the production process of carrier, need at the temperature of 400 ~ 500 ℃, carry out sintering, even if washing is not thorough, these residual ' organically ' Bond compositions, by carbonization or burning-off, do not affect the performance of catalyzer;
In addition, according to aforesaid PM work principle of filter, the carrier filtering for PM is retaining the basis of fully many air-flow micro passages, try one's best support core ' compacting ', make its volume density higher, just easily realize high ash content saturation and filtration efficiency; This just requires carrier to want sufficient compacting, and therefore, the coating thickness on carrier will strictly be controlled, otherwise produce, stops up; In addition, core meaning of the present invention is that the fiber of petroleum resin strengthening is the attribute that belongs to ' inorganic ', thermal expansion coefficient and carrier coating material are substantially suitable, or completely close, introduce the fiber of petroleum resin strengthenings in metallic carrier after, obviously can improve the adhesive effect of original pure metal fiber carrier to carrier coating material, prevent coming off of coating, in theory, 10:1 compiles in collaboration with the bonding strength 10% that silk screen can improve carrier coating on the whole, equally, 1:1's compiles in collaboration with the bonding strength 100% that silk screen can improve carrier coating on the whole.
Claims (5)
1. a silk screen for reinforced fiber and Stainless Steel Wire shuffling, is comprised of stainless steel fiber, reinforced fiber; Adopt ripe technology and equipment, according to plying, mix to hook to compile and pool capital; It is characterized in that concrete steps are as follows: 1) first stainless steel fiber is selected the Stainless Steel Wire that string diameter is 0.2 ~ 0.4mm, reinforced fiber is selected carbon fiber bundle and the basalt bundle through the carbon fiber bundle of phenolic aldehyde strengthening and basalt fibre bundle or rope or the strengthening of process petroleum resin; 2) adopt industrial pressuring silk screen loom to mix and hook volume, the thread of stainless steel fiber and reinforced fiber silk is woven in the ratio inlet wire of 10:1 ~ 1:1; 3) at the line of Stainless Steel Wire, take turns the line wheel that a side separately adds a reinforced fiber, on this aspect, two bursts of fiber chargings simultaneously participate in braiding simultaneously; 4) after having woven, when Bond is phenolic resin, removes and adopt the solvent that tap water and alcohol are 1:2, at room temperature, ultrasound embathes 10 ~ 20min; Or Bond is while being petroleum resin, removes employing tasteless kerosene, at the temperature of 40 ~ 50 ℃, ultrasound embathes 20 ~ 30min; 5) finally at the temperature of 400 ~ 500 ℃, shuffling silk screen carries out sintering.
2. the silk screen of a kind of reinforced fiber according to claim 1 and Stainless Steel Wire shuffling, the wire diameter of single wires that it is characterized in that described reinforced fiber is the carbon fiber bundle of 1K ~ 50K of 5 ~ 20 μ m, and the monofilament diameter of this carbon fiber bundle after phenolic aldehyde enhancement process is basalt fibre bundle or the rope of diameter 0.1 ~ 2mm of 3 ~ 20 μ m.
3. the silk screen of a kind of reinforced fiber according to claim 1 and Stainless Steel Wire shuffling, is characterized in that the monofilament diameter of described reinforced fiber silk after petroleum resin enhancement process is basalt fibre bundle or the rope of diameter 0.1 ~ 2mm of 3 ~ 20 μ m.
4. the silk screen of a kind of reinforced fiber according to claim 1 and Stainless Steel Wire shuffling, is characterized in that described Stainless Steel Wire is FeCrAl heat-resistance stainless steel silk, adapts to 600 ℃ of above high temperature.
5. the silk screen of a kind of reinforced fiber according to claim 1 and Stainless Steel Wire shuffling, is characterized in that the line wheel of described pressuring silk screen loom adopts 10 following line wheels inlet wire simultaneously, and two bursts of fiber chargings simultaneously participate in braiding simultaneously.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352218A (en) * | 2017-06-02 | 2017-11-17 | 浙江龙圣华橡胶有限公司 | A kind of preparation method of basalt fibre canvas core conveyor belt |
| CN108854233A (en) * | 2018-07-04 | 2018-11-23 | 芜湖新世纪净化器材有限责任公司 | A kind of water purification catridge assembly bonding table top |
| CN111780604A (en) * | 2020-06-01 | 2020-10-16 | 东南大学 | Novel basalt fiber thermal oxidizer heat accumulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107352218A (en) * | 2017-06-02 | 2017-11-17 | 浙江龙圣华橡胶有限公司 | A kind of preparation method of basalt fibre canvas core conveyor belt |
| CN108854233A (en) * | 2018-07-04 | 2018-11-23 | 芜湖新世纪净化器材有限责任公司 | A kind of water purification catridge assembly bonding table top |
| CN111780604A (en) * | 2020-06-01 | 2020-10-16 | 东南大学 | Novel basalt fiber thermal oxidizer heat accumulator |
| CN111780604B (en) * | 2020-06-01 | 2021-10-29 | 东南大学 | Basalt fiber thermal oxidizer heat accumulator |
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| CN103557046B (en) | 2016-01-06 |
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