CN104801110A - Plush and nanometer electrostatic spinning felt composite filter material and preparation method thereof - Google Patents
Plush and nanometer electrostatic spinning felt composite filter material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a plush and nanometer electrostatic spinning felt composite filter material which comprises a surface layer and a lining layer, wherein the surface layer is a nanometer electrostatic spinning felt layer; the lining layer is a plush filter material layer; the nanometer electrostatic spinning felt layer is spun on the back face of the plush filter material layer through an electrostatic nanometer spinning technology. The composite filter material can improve the effect of filtering dust, and is especially high in filtering efficiency of dust with PM10-PM2.5. Besides, the invention provides a preparation method of the composite filter material, and the prepared composite filter material is stable in structure and high in production efficiency.
Description
Technical field
The invention belongs to field of fabric producing technology, specifically, relate to a kind of plush and nano electrostatic spins felt composite filtering material and preparation method thereof.
Background technology
Along with air-polluting aggravation, the health threat of human body is also strengthened day by day, need the high composite filtering material simultaneously can eliminating again pernicious gas of a kind of filtering accuracy.At present woven, acupuncture, water thorn, spunbond and melt-blown filtrate respectively have its Performance Characteristics.In general, the filter efficiency of woven filtrate is lower than Nonwoven Filter, and general weaving filter cloth, do not reach the requirement of the pellet of filtering PM10-below PM2.5.
In the air of indoor except dust granule, also containing various pernicious gases such as formaldehyde, benzene, toluene, ammonia.Dirt sources just shifts by the simple mode of adsorbing that adopts, and does not make pollutant decompose and eliminates, therefore the saturated after-purification efficiency of existence absorption significantly declines and secondary pollution problems.
Also the scavenging material having various air purifier in the market separates with filtrate, adds cost, cannot accomplish dedusting and purification perfect adaptation.
TiO
2nano-photo catalytic can the problem of address contamination process difficulty, and meanwhile, photocatalysis also helps the specific area improving bamboo charcoal filtrate.If while guarantee dust removing effects, certain absorption, the function of resolving harmful gas can be had again, a kind of functional filter material having dust removal and filtration concurrently and remove pernicious gas can be made like this.
Summary of the invention
technical problem:technical problem to be solved by this invention is: provide a kind of plush and nano electrostatic to spin felt composite filtering material, this composite filtering material can improve the effect of filter dust, and the filtering dust efficiency especially for PM10-PM2.5 is high; Meanwhile, also provide the preparation method of this composite filtering material, the composite filtering material Stability Analysis of Structures of preparation, formation efficiency is high.
technical scheme:for solving the problems of the technologies described above, on the one hand, the invention provides a kind of plush and nano electrostatic spins felt composite filtering material, this composite filtering material comprises top layer and nexine, top layer is that nano electrostatic spins carpet veneer, nexine is plush filter material layer, spins nano electrostatic spin carpet veneer by electrostatic nano-spun technique at the back side of plush filter material layer.
As a kind of embodiment, described plush filter material layer and nano electrostatic are spun carpet veneer and are immersed TiO
2in colloidal sol, dipping 4 ~ 5min post-drying.
As a kind of embodiment, described plush filter material layer comprises the woven surface layer of bamboo charcoal filament fiber and the woven pile layer of bamboo-carbon fibre buiky yarn, and pile layer is connected on surface layer.
As a kind of embodiment, described plush filter material layer is formed by cutting warp-knitted spacer fabric open, and described warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, and wall is connected between two-layer surface layer, surface layer is weaved by bamboo charcoal filament fiber, and wall is weaved by bamboo-carbon fibre buiky yarn.
As a kind of embodiment, described nano electrostatic is spun carpet veneer and is made up of polyvinyl alcohol nano.
On the other hand, the present invention also provides a kind of plush and nano electrostatic to spin the preparation method of felt composite filtering material, and this preparation method comprises the following steps:
Step 10) weaves warp-knitted spacer fabric:
Utilize La Sheer double rib warp loom to weave warp-knitted spacer fabric, warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, and wall is connected between two-layer surface layer;
Step 20) prepare plush filter material layer:
First woven for step 10) warp-knitted spacer fabric is carried out thermal finalization process, then cut open from centre by the warp-knitted spacer fabric after sizing, form two block length lint filter material layers, every block length lint filter material layer comprises a surface layer and a pile layer;
Step 30) prepare nano electrostatic and spin carpet veneer:
First polyvinyl alcohol polymer is made spinning solution, then electrostatic spinning apparatus is utilized to carry out electrostatic spinning, in electrostatic spinning process, using step 20) surface layer of plush filter material layer prepared is as receiving plane, polyvinyl alcohol nano is made to be arranged on the surface layer of plush filter material layer with unordered shape, form nano electrostatic and spin carpet veneer, thus make composite filtering material;
Step 40) carry out post processing:
First by step 30) composite filtering material prepared through Ultrasonic Cleaning, remove the finish in fiber, then composite filtering material immersed TiO
2in colloidal sol, then take out oven dry, thus the obtained composite filtering material through post processing.
As a kind of embodiment, in described step 10), surface layer adopts 200 ~ 400D bamboo charcoal filament fiber to weave, and surface thickness is 0.2 ~ 0.5mm; Wall adopts bamboo-carbon fibre buiky yarn to weave, 1 ~ 3, bamboo-carbon fibre buiky yarn interval needle gage adjacent in wall, and the thickness of wall is 10 ~ 50mm; The surface layer tissue of warp-knitted spacer fabric adopts pillar stitch, and pillar stitch's coil density is 10 ~ 15 circles/cm.
As a kind of embodiment, described step 20) in, the setting temperature in thermal finalization process is 110 ~ 120 DEG C, and shaping time is 8 ~ 10 minutes; In plush filter material layer, the villus length of pile layer is 5 ~ 25mm, and fine hair is wavy flexing.
As a kind of embodiment, described step 30) in, the diameter of polyvinyl alcohol nano is 100 ~ 500nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 1 ~ 4 g/m
2.
As a kind of embodiment, described step 40) in, immerse TiO
2the time of colloidal sol is 4 ~ 5min, and bake out temperature is 70 ~ 80 DEG C, TiO
2in colloidal sol, the mass content of titanium is 55.8%.
beneficial effect:compared with prior art, technical scheme of the present invention has following beneficial effect:
1, give full play to the performance advantage that nano electrostatic spins felt and these two kinds of different structure feature filtrates of plush filtrate, prepared composite filtering material by warp knitting technology and Static Spinning process combining, improve filtering accuracy and filter efficiency, extend filtrate service life.
2, superpower absorption and the TiO of bamboo-carbon fibre is taken full advantage of
2the ability of resolving harmful gas and the great surface area structure feature of plush, can the effective harmful substance such as adsorption-decomposition function formaldehyde, benzene, toluene, ammonia.The layers of nanofibers that this composite filtering material adopts and the pile layer that becomes mildewed, considerably increase the adsorption area of fiber, reach dedusting, smelly eliminating and absorption pernicious gas multi-functional.
Accompanying drawing explanation
Fig. 1 is a kind of structure sectional view of composite filtering material of the present invention.
Have in figure: plush filter material layer 1, surface layer 101, pile layer 102, nano electrostatic spin carpet veneer 2.
Detailed description of the invention
Below in conjunction with embodiment, content of the present invention is described further.
As shown in Figure 1, a kind of plush of the present invention and nano electrostatic spin felt composite filtering material, comprise top layer and nexine, and top layer is that nano electrostatic spins carpet veneer 2, nexine is plush filter material layer 1, spins nano electrostatic spin carpet veneer 2 by electrostatic nano-spun technique at the back side of plush filter material layer 1.As preferably, described nano electrostatic is spun carpet veneer 2 and is made up of polyvinyl alcohol nano.
The composite filtering material of said structure, when clean air, first the ultra-fine hole that the nanofiber utilizing nano electrostatic to spin carpet veneer 2 is formed carries out fine filtering to micronic dust, and then utilizes the very high surface areas of the curling lint in plush filter material layer 1, again adsorbs micronic dust.This composite construction can improve the filter efficiency to PM10-below PM2.5 micronic dust.
As a kind of embodiment, plush filter material layer 1 and nano electrostatic are spun carpet veneer 2 and are immersed TiO
2in colloidal sol, dipping 4 ~ 5min post-drying.Spin carpet veneer 2 at plush filter material layer 1 and nano electrostatic and immerse TiO
2after colloidal sol, plush filter material layer 1 and nano electrostatic are spun function that carpet veneer 2 has the pernicious gases such as photocatalysis Decomposition formaldehyde.Utilize TiO
2decompose plush filter material layer 1 and nano electrostatic and spin the pernicious gases such as the formaldehyde that carpet veneer 2 adsorbs, make pernicious gas not only be spun carpet veneer 2 by plush filter material layer 1 and nano electrostatic to adsorb, also be decomposed, thus reach the effect eliminating pernicious gas, add air-polluting clean-up effect.
As a kind of embodiment, plush filter material layer 1 comprises the woven surface layer of bamboo charcoal filament fiber 101 and the woven pile layer 102 of bamboo-carbon fibre buiky yarn, and pile layer 102 is connected on surface layer 101.Utilize the woven surface layer 101 of bamboo charcoal filament fiber, provide the brute force of filtrate, holding structure is stablized.Utilize the woven pile layer 102 of bamboo-carbon fibre buiky yarn, there is adsorption-decomposition function ability, can hygroscopic desiccation, smelly eliminating is antibacterial and have the performances such as anion penetrates, and can reach dedusting, smelly eliminating and absorption pernicious gas multi-functional.
As a kind of embodiment, plush filter material layer 1 is formed by cutting warp-knitted spacer fabric open, and warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, wall is connected between two-layer surface layer, surface layer is weaved by bamboo charcoal filament fiber, and wall is weaved by bamboo-carbon fibre buiky yarn, and structure is more stable.Existing employing plush filtrate adopts the mode of flocking, and easily come off hair.The present embodiment adopts cuts warp-knitted spacer fabric formation plush filter material layer 1 open, and not only production efficiency is high, and fine hair is combined more tight with surface layer, difficult drop-off.
Plush filter material layer 1 can only filter larger particles dust, and the present invention adopts nano electrostatic to spin carpet veneer 2 compound with it, and improve filter efficiency, the filter efficiency particularly for PM10-PM2.5 is high, reaches 99.9%.Meanwhile, the present invention adopts TiO
2colloidal sol carries out post processing to composite filtering material, improves the Adsorption and decomposition ability to pernicious gas, achieves dedusting and the Multifunctional effect that purifies air.
The plush of said structure and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric: utilize La Sheer double rib warp loom to weave warp-knitted spacer fabric, and warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, and wall is connected between two-layer surface layer.
In step 10), preferably, surface layer adopts 200 ~ 400D (D is fineness unit Denier) bamboo charcoal filament fiber to weave, and surface thickness is 0.2 ~ 0.5mm, ensure that surface layer intensity and Stability Analysis of Structures; Wall adopts bamboo-carbon fibre buiky yarn to weave, 1 ~ 3, bamboo-carbon fibre buiky yarn interval needle gage adjacent in wall, and the thickness of wall is 10 ~ 50mm, forms the tapetum of different arranging density and height, makes space fabric Stability Analysis of Structures on thickness.The surface layer tissue of warp-knitted spacer fabric adopts pillar stitch, and pillar stitch's coil density is 10 ~ 15 circles/cm.Adopt pillar stitch can add surface layer intensity.
Step 20) prepare plush filter material layer: first woven for step 10) warp-knitted spacer fabric is carried out thermal finalization process, then the warp-knitted spacer fabric after sizing is cut open from centre, form two block length lint filter material layers 1, every block length lint filter material layer 1 comprises a surface layer 101 and a pile layer 102.
In step 20) in, preferably, the setting temperature in thermal finalization process is 110 ~ 120 DEG C, and shaping time is 8 ~ 10 minutes.Warp-knitted spacer fabric is carried out the structural stability that heat setting can keep space fabric.Setting temperature setting is greater than the vitrification point of fiber, lower than fiber melt.In plush filter material layer, the villus length of pile layer 102 is 5 ~ 25mm, and fine hair is wavy flexing.Fiber crimp can increase the length of fiber, the surface area of increased fiber.
Step 30) prepare nano electrostatic and spin carpet veneer: first polyvinyl alcohol polymer is made spinning solution, then electrostatic spinning apparatus is utilized to carry out electrostatic spinning, in electrostatic spinning process, using step 20) surface layer of plush filter material layer prepared is as receiving plane, polyvinyl alcohol nano is made to be arranged on the surface layer 101 of plush filter material layer with unordered shape, form nano electrostatic and spin carpet veneer 2, thus make composite filtering material.
In step 30) in, preferably, the diameter of polyvinyl alcohol nano is 100 ~ 500nm, and the grammes per square metre that nano electrostatic spins carpet veneer 2 is 1 ~ 4 g/m
2.Polyvinyl alcohol nano is nanoscale structures, improves filter efficiency.
Step 40) carry out post processing: first by step 30) composite filtering material prepared through Ultrasonic Cleaning, remove the finish in fiber, then composite filtering material immersed TiO
2in colloidal sol, then take out oven dry, thus the obtained composite filtering material through post processing.
In step 40) in, preferably, immerse TiO
2the time of colloidal sol is 4 ~ 5min, and bake out temperature is 70 ~ 80 DEG C, TiO
2in colloidal sol, Ti content is 55.8%.After dipping drying and processing, TiO
2uniform particle sticks to fiber surface.Because the fine hair of plush exists, TiO in filtrate can be increased
2the quantity of particle, improves capacity of decomposition.Meanwhile, due to the adsorption capacity of bamboo-carbon fibre, define fiber surface TiO
2near particle, harmful gas concentration increases, and also improves photocatalytic degradation reflection speed, adds the resolution ratio of pernicious gas.Fine hair is wavy flexing, adds the contact area of fine hair and air, fine hair contains TiO simultaneously
2, can resolving harmful gas.TiO
2be attached on fine hair, and fine hair is dynamic, significantly increases TiO
2the efficiency of resolving harmful gas.
Below by testing the excellent technique effect proved technical solution of the present invention and have.
embodiment 1
Plush and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric:
Warp-knitted spacer fabric is weaved and is formed on La Sheer double rib warp loom.These facility have 6 sley bars, and wherein two surface layers of warp-knitted spacer fabric adopt front and back four that sley bar is weaved, and surface layer adopts the bamboo charcoal filament fiber of 300D/96f to weave, and tissue adopts pillar stitch.Pillar stitch's coil density is 10 circles/cm.Surface thickness is 0.3mm.The wall of space fabric adopts middle two sley bars to weave, pad yarn number employing 1-0 2-1/2-1 1-0//and 2-1 1-0/1-0 2-1//and, 1, adjacent spaces silk interval needle gage, adds the density of a paraphysis and the stability of fabric.The thickness of wall is 20mm.Between paraphysis adopt bamboo-carbon fibre buiky yarn, this yarn flexing is fluffy, has larger surface area.
Step 20) prepare plush filter material layer:
Under warp-knitted spacer fabric after machine through thermal finalization, setting temperature is 120 DEG C, and shaping time is 10 minutes.Warp-knitted spacer fabric after sizing is cut open from centre, forms two pieces of plush filter material layers be made up of a surface layer and a pile layer.The villus length of filtrate is 10mm, in wavy flexing, has larger adsorption surface area.
Step 30) prepare nano electrostatic and spin carpet veneer:
Nanometer felt adopts nano electrostatic spining technology and technique, polyvinyl alcohol (PVA) polymer is made spinning solution, utilizes electrostatic spinning apparatus to carry out electrostatic spinning.PVA polymer forms one charged injection stream under the left and right of electric field, adopt the surface layer of plush filter material layer as receiving plane, make PVA nanofiber be arranged in the pluse cloth back side with unordered shape, form the nano fibrous membrane of similar non-woven fabrics, be prepared into composite filtering material.The diameter of PVA nanofiber is 250nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 3 g/m
2.
Step 40) carry out post processing:
Will through Ultrasonic Cleaning by the composite filtering material made, then composite filtering material titanium being immersed mass content is the TiO of 55.8%
2in colloidal sol, take out after 4min and dry, bake out temperature is 70 DEG C, thus the obtained composite filtering material through post processing.
embodiment 2
Plush and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric:
Warp-knitted spacer fabric is weaved and is formed on La Sheer double rib warp loom.These facility have 6 sley bars, and wherein two surface layers of warp-knitted spacer fabric adopt front and back four that sley bar is weaved, and surface layer adopts the bamboo charcoal filament fiber of 200D/96f to weave, and tissue adopts pillar stitch.Pillar stitch's coil density is 13 circles/cm.Surface thickness is 0.2mm.The wall of space fabric adopts middle two sley bars to weave, pad yarn number employing 1-0 3-2/3-2 1-0//and 3-2 1-0/1-0 3-2//and, 3, adjacent spaces silk interval needle gage, adds the density of a paraphysis and the stability of fabric.The thickness of wall is 50mm.Between paraphysis adopt bamboo-carbon fibre buiky yarn, this yarn flexing is fluffy, has larger surface area.
Step 20) prepare plush filter material layer:
Under warp-knitted spacer fabric after machine through thermal finalization, setting temperature is 110 DEG C, and shaping time is 9 minutes.Warp-knitted spacer fabric after sizing is cut open from centre, forms two pieces of plush filter material layers be made up of a surface layer and a pile layer.The villus length of filtrate is 25mm, in wavy flexing, has larger adsorption surface area.
Step 30) prepare nano electrostatic and spin carpet veneer:
Nanometer felt adopts nano electrostatic spining technology and technique, polyvinyl alcohol (PVA) polymer is made spinning solution, utilizes electrostatic spinning apparatus to carry out electrostatic spinning.PVA polymer forms one charged injection stream under the left and right of electric field, adopt the surface layer of plush filter material layer as receiving plane, make PVA nanofiber be arranged in the pluse cloth back side with unordered shape, form the nano fibrous membrane of similar non-woven fabrics, be prepared into composite filtering material.The diameter of PVA nanofiber is 100nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 1 g/m
2.
Step 40) carry out post processing:
Will through Ultrasonic Cleaning by the composite filtering material made, then composite filtering material titanium being immersed mass content is the TiO of 55.8%
2in colloidal sol, take out after 5min and dry, bake out temperature is 80 DEG C, thus the obtained composite filtering material through post processing.
embodiment 3
Plush and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric:
Warp-knitted spacer fabric is weaved and is formed on La Sheer double rib warp loom.These facility have 6 sley bars, and wherein two surface layers of warp-knitted spacer fabric adopt front and back four that sley bar is weaved, and surface layer adopts the bamboo charcoal filament fiber of 400D/96f to weave, and tissue adopts pillar stitch.Pillar stitch's coil density is 15 circles/cm.Surface thickness is 0.5mm.The wall of space fabric adopts middle two sley bars to weave, pad yarn number employing 1-0 4-3/4-3 1-0//and 4-3 1-0/1-0 4-3//and, 2, adjacent spaces silk interval needle gage, adds the density of a paraphysis and the stability of fabric.The thickness of wall is 35mm.Between paraphysis adopt bamboo-carbon fibre buiky yarn, this yarn flexing is fluffy, has larger surface area.
Step 20) prepare plush filter material layer:
Under warp-knitted spacer fabric after machine through thermal finalization, setting temperature is 115 DEG C, and shaping time is 8 minutes.Warp-knitted spacer fabric after sizing is cut open from centre, forms two pieces of plush filter material layers be made up of a surface layer and a pile layer.The villus length of filtrate is 5mm, in wavy flexing, has larger adsorption surface area.
Step 30) prepare nano electrostatic and spin carpet veneer:
Nanometer felt adopts nano electrostatic spining technology and technique, polyvinyl alcohol (PVA) polymer is made spinning solution, utilizes electrostatic spinning apparatus to carry out electrostatic spinning.PVA polymer forms one charged injection stream under the left and right of electric field, adopt the surface layer of plush filter material layer as receiving plane, make PVA nanofiber be arranged in the pluse cloth back side with unordered shape, form the nano fibrous membrane of similar non-woven fabrics, be prepared into composite filtering material.The diameter of PVA nanofiber is 500nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 4 g/m
2.
Step 40) carry out post processing:
Will through Ultrasonic Cleaning by the composite filtering material made, then composite filtering material titanium being immersed mass content is the TiO of 55.8%
2in colloidal sol, take out after 4.5min and dry, bake out temperature is 74 DEG C, thus the obtained composite filtering material through post processing.
embodiment 4
Plush and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric:
Warp-knitted spacer fabric is weaved and is formed on La Sheer double rib warp loom.These facility have 6 sley bars, and wherein two surface layers of warp-knitted spacer fabric adopt front and back four that sley bar is weaved, and surface layer adopts the bamboo charcoal filament fiber of 260D/96f to weave, and tissue adopts pillar stitch.Pillar stitch's coil density is 14 circles/cm.Surface thickness is 0.4mm.The wall of space fabric adopts middle two sley bars to weave, pad yarn number employing 1-0 2-1/2-1 1-0//and 2-1 1-0/1-0 2-1//and, 2, adjacent spaces silk interval needle gage, adds the density of a paraphysis and the stability of fabric.The thickness of wall is 22mm.Between paraphysis adopt bamboo-carbon fibre buiky yarn, this yarn flexing is fluffy, has larger surface area.
Step 20) prepare plush filter material layer:
Under warp-knitted spacer fabric after machine through thermal finalization, setting temperature is 118 DEG C, and shaping time is 8.5 minutes.Warp-knitted spacer fabric after sizing is cut open from centre, forms two pieces of plush filter material layers be made up of a surface layer and a pile layer.The villus length of filtrate is 18mm, in wavy flexing, has larger adsorption surface area.
Step 30) prepare nano electrostatic and spin carpet veneer:
Nanometer felt adopts nano electrostatic spining technology and technique, polyvinyl alcohol (PVA) polymer is made spinning solution, utilizes electrostatic spinning apparatus to carry out electrostatic spinning.PVA polymer forms one charged injection stream under the left and right of electric field, adopt the surface layer of plush filter material layer as receiving plane, make PVA nanofiber be arranged in the pluse cloth back side with unordered shape, form the nano fibrous membrane of similar non-woven fabrics, be prepared into composite filtering material.The diameter of PVA nanofiber is 420nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 3.2 g/m
2.
Step 40) carry out post processing:
Will through Ultrasonic Cleaning by the composite filtering material made, then composite filtering material titanium being immersed mass content is the TiO of 55.8%
2in colloidal sol, take out after 4.5min and dry, bake out temperature is 78 DEG C, thus the obtained composite filtering material through post processing.
embodiment 5
Plush and nano electrostatic spin a preparation method for felt composite filtering material, comprise the following steps:
Step 10) weaves warp-knitted spacer fabric:
Warp-knitted spacer fabric is weaved and is formed on La Sheer double rib warp loom.These facility have 6 sley bars, and wherein two surface layers of warp-knitted spacer fabric adopt front and back four that sley bar is weaved, and surface layer adopts the bamboo charcoal filament fiber of 320D/96f to weave, and tissue adopts pillar stitch.Pillar stitch's coil density is 11 circles/cm.Surface thickness is 0.3mm.The wall of space fabric adopts middle two sley bars to weave, pad yarn number employing 1-0 2-1/2-1 1-0//and 2-1 1-0/1-0 2-1//and, 3, adjacent spaces silk interval needle gage, adds the density of a paraphysis and the stability of fabric.The thickness of wall is 42mm.Between paraphysis adopt bamboo-carbon fibre buiky yarn, this yarn flexing is fluffy, has larger surface area.
Step 20) prepare plush filter material layer:
Under warp-knitted spacer fabric after machine through thermal finalization, setting temperature is 112 DEG C, and shaping time is 9.5 minutes.Warp-knitted spacer fabric after sizing is cut open from centre, forms two pieces of plush filter material layers be made up of a surface layer and a pile layer.The villus length of filtrate is 12mm, in wavy flexing, has larger adsorption surface area.
Step 30) prepare nano electrostatic and spin carpet veneer:
Nanometer felt adopts nano electrostatic spining technology and technique, polyvinyl alcohol (PVA) polymer is made spinning solution, utilizes electrostatic spinning apparatus to carry out electrostatic spinning.PVA polymer forms one charged injection stream under the left and right of electric field, adopt the surface layer of plush filter material layer as receiving plane, make PVA nanofiber be arranged in the pluse cloth back side with unordered shape, form the nano fibrous membrane of similar non-woven fabrics, be prepared into composite filtering material.The diameter of PVA nanofiber is 180nm, and the grammes per square metre that nano electrostatic spins carpet veneer is 1.8g/m
2.
Step 40) carry out post processing:
Will through Ultrasonic Cleaning by the composite filtering material made, then composite filtering material titanium being immersed mass content is the TiO of 55.8%
2in colloidal sol, take out after 5min and dry, bake out temperature is 80 DEG C, thus the obtained composite filtering material through post processing.
To composite filtering material prepared by above-mentioned five embodiments, and existing weaving filter cloth carries out filtration experiment.Filtration experiment adopts according to GB 6719-2009 technical specification and requirement, has carried out experiment test and has determined the performance indications such as the grade dust-collection efficiency under wind friction velocity.The experiment of degradation of formaldehyde, puts into the test box with pollution sources by filtrate, use PPM-400 formaldehyde tester to test from measuring point, read concentration of formaldehyde.Calculate the resolution ratio after 1 hour.
Before purified treatment, air ambient is: PM2.5 is 200 μ g/m
3, formaldehyde is 1.3ppm.
Experimental result is as shown in table 1.
table 1
After tested, the composite filtering material prepared of above-described embodiment is through TiO
2the purifying rate of the composite filtering material PARA FORMALDEHYDE PRILLS(91,95) that colloidal sol arranges is significantly improved.Be more than 99.9% to the filter efficiency of PM2.5, the resolution ratio of formaldehyde is more than 60%.And existing weaving filter cloth is 72% to the filter efficiency of PM2.5, PARA FORMALDEHYDE PRILLS(91,95) can not decompose.
More than show and describe general principle of the present invention, principal character and advantage.Those skilled in the art should understand; the present invention is not by the restriction of above-mentioned specific embodiment; description in above-mentioned specific embodiment and description is just in order to further illustrate principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The scope of protection of present invention is defined by claims and equivalent thereof.
Claims (10)
1. a plush and nano electrostatic spin felt composite filtering material, it is characterized in that: this composite filtering material comprises top layer and nexine, top layer is that nano electrostatic spins carpet veneer (2), nexine is plush filter material layer (1), spins nano electrostatic spin carpet veneer (2) by electrostatic nano-spun technique at the back side of plush filter material layer (1).
2. spin felt composite filtering material according to plush according to claim 1 and nano electrostatic, it is characterized in that: described plush filter material layer (1) and nano electrostatic are spun carpet veneer (2) and immersed TiO
2in colloidal sol, dipping 4 ~ 5min post-drying.
3. spin felt composite filtering material according to plush according to claim 1 and nano electrostatic, it is characterized in that: described plush filter material layer (1) comprises the woven surface layer of bamboo charcoal filament fiber (101) and the woven pile layer of bamboo-carbon fibre buiky yarn (102), and pile layer (102) is connected on surface layer (101).
4. spin felt composite filtering material according to plush according to claim 3 and nano electrostatic, it is characterized in that: described plush filter material layer (1) is formed by cutting warp-knitted spacer fabric open, described warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, wall is connected between two-layer surface layer, surface layer is weaved by bamboo charcoal filament fiber, and wall is weaved by bamboo-carbon fibre buiky yarn.
5. spin felt composite filtering material according to the plush in claim 1-4 described in any one and nano electrostatic, it is characterized in that: described nano electrostatic is spun carpet veneer (2) and is made up of polyvinyl alcohol nano.
6. plush according to claim 1 and nano electrostatic spin a preparation method for felt composite filtering material, it is characterized in that: this preparation method comprises the following steps:
Step 10) weaves warp-knitted spacer fabric:
Utilize La Sheer double rib warp loom to weave warp-knitted spacer fabric, warp-knitted spacer fabric comprises two-layer surface layer and one deck wall, and wall is connected between two-layer surface layer;
Step 20) prepare plush filter material layer:
First woven for step 10) warp-knitted spacer fabric is carried out thermal finalization process, then the warp-knitted spacer fabric after sizing is cut open from centre, form two block length lint filter material layers (1), every block length lint filter material layer (1) comprises a surface layer (101) and a pile layer (102);
Step 30) prepare nano electrostatic and spin carpet veneer:
First polyvinyl alcohol polymer is made spinning solution, then electrostatic spinning apparatus is utilized to carry out electrostatic spinning, in electrostatic spinning process, using step 20) surface layer of plush filter material layer prepared is as receiving plane, polyvinyl alcohol nano is made to be arranged on the surface layer (101) of plush filter material layer with unordered shape, form nano electrostatic and spin carpet veneer (2), thus make composite filtering material;
Step 40) carry out post processing:
First by step 30) composite filtering material prepared through Ultrasonic Cleaning, remove the finish in fiber, then composite filtering material immersed TiO
2in colloidal sol, then take out oven dry, thus the obtained composite filtering material through post processing.
7. spin the preparation method of felt composite filtering material according to plush according to claim 6 and nano electrostatic, it is characterized in that: in described step 10), surface layer adopts 200 ~ 400D bamboo charcoal filament fiber to weave, and surface thickness is 0.2 ~ 0.5mm; Wall adopts bamboo-carbon fibre buiky yarn to weave, 1 ~ 3, bamboo-carbon fibre buiky yarn interval needle gage adjacent in wall, and the thickness of wall is 10 ~ 50mm; The surface layer tissue of warp-knitted spacer fabric adopts pillar stitch, and pillar stitch's coil density is 10 ~ 15 circles/cm.
8. spin the preparation method of felt composite filtering material according to plush according to claim 6 and nano electrostatic, it is characterized in that: described step 20) in, the setting temperature in thermal finalization process is 110 ~ 120 DEG C, and shaping time is 8 ~ 10 minutes; In plush filter material layer, the villus length of pile layer (102) is 5 ~ 25mm, and fine hair is wavy flexing.
9. spin the preparation method of felt composite filtering material according to plush according to claim 6 and nano electrostatic, it is characterized in that: described step 30) in, the diameter of polyvinyl alcohol nano is 100 ~ 500nm, and the grammes per square metre that nano electrostatic spins carpet veneer (2) is 1 ~ 4 g/m
2.
10. spin the preparation method of felt composite filtering material according to the plush in claim 5-9 described in any one and nano electrostatic, it is characterized in that: described step 40) in, immerse TiO
2the time of colloidal sol is 4 ~ 5min, and bake out temperature is 70 ~ 80 DEG C, TiO
2in colloidal sol, the mass content of titanium is 55.8%.
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Effective date of registration: 20190128 Address after: 224412 No. 8 Industrial Park of Banhu Town, Funing County, Yancheng City, Jiangsu Province Patentee after: JIANGSU XI YANGYANG ENVIRONMENTAL PROTECTION EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD. Address before: 224051 Jianjun East Road, Yancheng City, Jiangsu 211 Patentee before: Yangcheng Institute of Technology |