CN114351463A - Composite adhesive, application thereof, scour-dispersion-prevention water-filtration non-woven fabric and preparation method thereof - Google Patents
Composite adhesive, application thereof, scour-dispersion-prevention water-filtration non-woven fabric and preparation method thereof Download PDFInfo
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- CN114351463A CN114351463A CN202111563788.3A CN202111563788A CN114351463A CN 114351463 A CN114351463 A CN 114351463A CN 202111563788 A CN202111563788 A CN 202111563788A CN 114351463 A CN114351463 A CN 114351463A
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 46
- 238000001914 filtration Methods 0.000 title claims abstract description 43
- 239000000853 adhesive Substances 0.000 title claims abstract description 34
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004816 latex Substances 0.000 claims abstract description 26
- 229920000126 latex Polymers 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920002261 Corn starch Polymers 0.000 claims abstract description 22
- 239000008120 corn starch Substances 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000003999 initiator Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims description 39
- 239000004744 fabric Substances 0.000 claims description 35
- 229920000728 polyester Polymers 0.000 claims description 32
- 239000000835 fiber Substances 0.000 claims description 25
- 239000006185 dispersion Substances 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000000155 melt Substances 0.000 claims description 13
- 238000002425 crystallisation Methods 0.000 claims description 12
- 230000008025 crystallization Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 238000007598 dipping method Methods 0.000 claims description 6
- 150000002978 peroxides Chemical group 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010128 melt processing Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 35
- 239000010865 sewage Substances 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000036314 physical performance Effects 0.000 abstract description 2
- 229920002472 Starch Polymers 0.000 description 14
- 235000019698 starch Nutrition 0.000 description 14
- 239000008107 starch Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000011148 porous material Substances 0.000 description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- 239000002759 woven fabric Substances 0.000 description 5
- 238000009991 scouring Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
Abstract
The invention belongs to the technical field of water-filtering non-woven fabric materials, and discloses a composite adhesive and application thereof, an anti-scour water-filtering non-woven fabric and a preparation method thereof. The compound adhesive comprises the following components in parts by weight: 2400 parts of water 2100, 450 parts of acrylic latex 300, 50-125 parts of corn starch and 10-40 parts of initiator. The scour-dispersing water filter non-woven fabric manufactured by the invention has excellent physical performance indexes and good scour-dispersing resistance, and the air permeability and the sewage filtering efficiency reach excellent levels.
Description
Technical Field
The invention belongs to the technical field of water-filtering non-woven fabric materials, and particularly relates to a composite adhesive and application thereof, as well as anti-scour-dispersion water-filtering non-woven fabric and a preparation method thereof.
Background
The existing water filter textile materials are mainly of two types, firstly, woven fabrics formed by interweaving warps and wefts by taking yarns as units are mostly plain woven fabrics and twill woven fabrics; the other is a non-woven fabric which is formed by reinforcing the fiber unit through mechanical, chemical or thermal bonding or a combination of the mechanical, chemical or thermal bonding. The woven fabric uses yarns as units, is interwoven in a warp-weft mode, belongs to a typical two-dimensional filtering material, is thick in yarn diameter, relatively large in pore space between yarns, low in actual porosity, poor in filtering efficiency of tiny particles, low in trapping efficiency, and capable of achieving relatively ideal effect by continuously filtering sewage for a plurality of times. The non-woven fabric is a tightly bonded material formed by three-dimensional random arrangement of fibers, the network structure of the non-woven fabric can improve the dispersion effect of water flowing through the non-woven fabric filter material, and micro particles in sewage have more chances to collide and adhere to single fibers, so the capturing effect is better, and the filtering efficiency is higher. The pores of the non-woven fabric filter material are formed by randomly distributed fibers, the total porosity of the non-woven fabric filter material can reach more than 80 percent and is far higher than that of a woven fabric filter material, the non-woven fabric filter material is not easy to block, filter residues are easy to remove, and the use cost is reduced to a great extent. However, it has been found that the following problems mainly exist in the existing nonwoven fabric filter material technology: under the great or more urgent condition of rivers, filtering material is very easy to be out of shape, and the scour protection is scattered the ability relatively poor, in case by the break-away between fibre and the fibre, filtration efficiency will greatly reduced, and life will shorten.
The current state of the art for nonwoven filter materials is as follows: CN201611110671.9 discloses a bi-component gradient structure non-woven fabric for water filtration and a preparation method thereof, the non-woven fabric is composed of PET filament fibers and a circular COPET filament fiber composite fiber web which are bonded together, the non-woven fabric prepared by the method can fully exert the advantages of filtration of different fineness in the filter material and ensure the filtration efficiency, but the material has a good short-term filtration effect but cannot be used in a large or urgent environment for a long time, and the fibers can be dispersed, so that the filtration efficiency is obviously reduced. CN200410053952.6 discloses a spunlace nonwoven fabric filter material and a preparation method thereof, the method combines a sizing material and a spunlace short fiber nonwoven fabric together, and then dries the mixture to improve the dimensional stability of the mixture, but the preparation method is complicated, and the service life and strength index of the filter material are much poorer than those of a filament nonwoven fabric filter material. CN201711475011.5 discloses a production method of lipophilic felt base cloth, the glue is pure chemical glue, the lipophilicity of the felt base cloth produced by the method is good, but if the felt base cloth is used as filter cloth, the filter performance is poor, and the pores are easy to block after long-term use, so that the filter effect is obviously reduced, and the service life is shortened.
Therefore, a new compound adhesive is urgently needed to be provided at present, and is applied to preparing a non-woven fabric filter material, so that a new anti-washout water filter non-woven fabric is obtained, and the problems of poor anti-washout performance and short service life of the existing water filter non-woven fabric material are solved.
Disclosure of Invention
The invention aims to provide a composite adhesive and application thereof, an anti-scour-dispersion water-filtering non-woven fabric and a preparation method thereof, aiming at the defects of the prior art. The scour-dispersing water filter non-woven fabric manufactured by the invention has excellent physical performance indexes and good scour-dispersing resistance, and the air permeability and the sewage filtering efficiency reach excellent levels.
In order to achieve the above object, a first aspect of the present invention provides a compound adhesive, which comprises the following components in parts by weight: 2400 parts of water 2100, 450 parts of acrylic latex 300, 50-125 parts of corn starch and 10-40 parts of initiator.
The invention also provides an application of the composite glue in preparation of the scour-dispersion-prevention water-filtration non-woven fabric.
The invention provides a preparation method of an anti-scour-dispersion water-filtering non-woven fabric, which comprises the following steps: and (3) dipping the raw polyester filament yarn cloth in the composite adhesive, and drying and shaping to obtain the anti-flushing water-dispersing filter non-woven cloth.
The invention provides the anti-scour-dispersion water-filter non-woven fabric prepared by the preparation method of the anti-scour-dispersion water-filter non-woven fabric.
The technical scheme of the invention has the following beneficial effects:
(1) the invention solves the problems of poor anti-washout performance and short service life of the existing water-filtering non-woven fabric material. The acrylic latex contained in the composite adhesive can enable the fibers to be mutually bonded, the physical property is good, and the filter material has strong anti-washout capability; the starch contained in the composite adhesive is gradually decomposed along with time to generate pores, so that the problems of reduced filtering efficiency and short service life caused by blockage of the filtering material can be effectively solved.
(2) The raw cloth of the polyester filament yarn is soaked in the composite glue, and then is dried and shaped, so that the bonding force between fibers is increased, the anti-scouring capability of the anti-scouring water-filtering non-woven cloth is greatly improved, and the service life of the anti-scouring water-filtering non-woven cloth is prolonged.
(3) On the basis of a one-step method for preparing a polyester filament raw cloth production line, the invention adjusts key process parameters, can continuously produce high-efficiency anti-flushing water-dispersion filter non-woven cloth materials, and has simple process flow and high production speed.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a compound adhesive in a first aspect, which comprises the following components in parts by weight: 2400 parts of water 2100, 450 parts of acrylic latex 300, 50-125 parts of corn starch and 10-40 parts of initiator.
According to the present invention, preferably, the compound glue comprises the following components in parts by weight: 2300 parts of water 2200-. The composite adhesive of the invention takes acrylic latex as a main body and starch as an auxiliary body. The acrylic latex is added to increase the adhesive force among fibers and greatly improve the anti-scattering capability of the filter material; the starch is added because the starch can be gradually decomposed to generate small pores, so that the situation that the pores are blocked after the filter material is used for a period of time, and the filter efficiency and the service life of the filter material are reduced is prevented.
According to the present invention, preferably, the acrylic latex is an aqueous dispersion obtained by copolymerizing butyl acrylate and styrene, and the solid content of the acrylic latex is 10 to 50%.
According to the present invention, preferably, the initiator is a peroxide-based initiator.
According to the present invention, preferably, the preparation method of the compound glue comprises: stirring the water and the corn starch under the heating condition to obtain gelatinized corn starch; and mixing the acrylic latex, the initiator and the gelatinized corn starch, and preserving heat to obtain the composite adhesive.
According to the present invention, preferably, the heating means includes steam heating, and the heating temperature is 75-90 ℃.
According to the invention, the time of the heat preservation is preferably 8-12 min.
According to the invention, the solid content of the compound gum is preferably 8% -12%.
The invention also provides an application of the composite glue in preparation of the scour-dispersion-prevention water-filtration non-woven fabric.
The invention provides a preparation method of an anti-scour-dispersion water-filtering non-woven fabric, which comprises the following steps: and (3) dipping the raw polyester filament yarn cloth in the composite adhesive, and drying and shaping to obtain the anti-flushing water-dispersing filter non-woven cloth.
According to the present invention, preferably, the drying manner includes rotary screen penetration drying, and the drying temperature is 150-.
According to the invention, the preparation method of the polyester filament raw cloth is preferably a polyester spun-bonded filament needle punching method.
According to the present invention, preferably, the preparation method of the polyester filament raw cloth comprises the following steps:
s1: crystallizing and drying the fiber-grade semi-dull polyester chips in sequence, and fully drying the fiber-grade semi-dull polyester chips;
s2: carrying out melting treatment on the fiber-grade semi-dull polyester chips subjected to drying treatment to obtain a melt;
s3: sequentially carrying out metering spinning, cooling drafting and splitting and lapping treatment on the melt to obtain a fiber web with an upper layer and a lower layer;
s4: and sequentially carrying out needling reinforcement and hot rolling treatment on the fiber web with the upper layer and the lower layer to obtain the polyester filament raw cloth.
According to the invention, preferably, the temperature of the crystallization treatment is 175-185 ℃, the time of the crystallization treatment is 10-20min, and the equipment of the crystallization treatment is a boiling type semi-closed crystallization bed.
According to the invention, preferably, the temperature of the drying treatment is 165-175 ℃, the time of the drying treatment is 5-7h, and the equipment of the drying treatment comprises a drying tower.
According to the invention, preferably, the melt processing apparatus comprises a screw extruder. Preferably, the fiber-grade semi-dull polyester chips subjected to drying treatment are placed into a screw extruder, the chips are extruded and melted into a melt state by the screw extruder, and the melt is filtered by a melt filter to obtain a relatively uniform melt.
In the invention, as a preferable scheme, the melt is metered by a metering pump and spun by a spinning assembly, the melt in a viscous state is cooled by cross air blowing and drafted by a drafting pipe to form PET filaments with certain strength and elongation, and the filament bundles rebound to a net forming curtain at a certain angle through a swinging sheet to form the fiber net with the upper layer and the lower layer.
The polyester filament raw cloth with certain strength is formed by sequentially reinforcing the upper layer of fiber and the lower layer of fiber through two procedures of pre-needling and main needling, wherein the needling depth and the needling density have great influence on the filtering effect, and according to the invention, the needling density of the pre-needling is preferably 15-25 punches/cm2The needling density of the main needling is 20-30 needling/cm2(ii) a The needling depth of the pre-needling is 5-15mm, and the needling depth of the main needling is 5-10 mm.
And (3) passing the polyester filament raw cloth subjected to the needling reinforcement treatment through a hot rolling mill, and controlling the thickness of the polyester filament raw cloth, wherein the higher the temperature of the hot rolling mill is, the higher the pressure is, the thinner the thickness is, and the thicker the thickness is. The temperature and pressure of the hot rolling mill must be controlled properly, if the polyester filament raw cloth is too thin, the space capable of containing impurities inside can be compressed, the filtering effect can be obviously reduced, according to the invention, the temperature of the compression roller of the hot rolling treatment is preferably 150 ℃ and 250 ℃, and the pressure of the hot rolling treatment is 45-55 bar. And (2) dipping the polyester filament raw cloth from the hot rolling mill in a composite adhesive solution, greatly improving the bonding effect between fibers through the bonding effect of the composite adhesive, and then drying and shaping the raw cloth to obtain the anti-flushing water-dispersion water-filtration non-woven cloth.
The invention provides the anti-scour-dispersion water-filter non-woven fabric prepared by the preparation method of the anti-scour-dispersion water-filter non-woven fabric.
The invention is further illustrated by the following examples.
The polyester filament raw cloth used in the following examples was produced by the polyester spunbond filament needling method by Chuzhou Tiandingfeng nonwoven fabric Co., Ltd, specifically:
s1: crystallizing and drying the fiber-grade semi-dull polyester chips in sequence, and fully drying the fiber-grade semi-dull polyester chips; the temperature of the crystallization treatment is 180 ℃, the time of the crystallization treatment is 15min, and the equipment of the crystallization treatment is a boiling type semi-closed crystallization bed. The temperature of the drying treatment is 170 ℃, the time of the drying treatment is 6h, and the drying treatment equipment comprises a drying tower.
S2: and (2) putting the fiber-grade semi-dull polyester slices subjected to drying treatment into a screw extruder (the screw extruder has six zones, the temperature is respectively set to 275 ℃, 282 ℃, 288 ℃, 287 ℃ and 286 ℃), extruding and melting the slices into a melt state by the screw extruder, and filtering the melt state by a melt filter to obtain a relatively uniform melt.
S3: sequentially carrying out metering spinning, cooling drafting and splitting and lapping treatment on the melt to obtain a fiber web with an upper layer and a lower layer;
metering spinning: the rotating speed of a metering pump is 14r/min, the total drafting pressure is 2.2bar, and the fineness of the filaments is 0.22 tex;
dividing and lapping: frequency of oscillation 170Sub/min, the net forming speed is 13.5m/min, and the gram weight of the prepared original cloth is 90-100g/m2；
S4: and sequentially carrying out needling reinforcement and hot rolling treatment on the fiber web with the upper layer and the lower layer to obtain the polyester filament raw cloth. The needling reinforcement comprises two procedures of pre-needling and main needling, wherein the pre-needling density and the main needling density are respectively 21 spines/cm224 thorn/cm2The needling depth is respectively 9mm and 7 mm. The temperature of the press roll for hot rolling treatment is 200 ℃, and the pressure on the east-west side is 50 bar.
Example 1
The embodiment provides a compound adhesive, which comprises the following components in parts by weight: 2300kg of water, 400kg of acrylic latex, 100kg of corn starch and 25kg of peroxide initiator.
The acrylic latex is an aqueous dispersion obtained by copolymerizing butyl acrylate and styrene, and the solid content of the acrylic latex is 45%.
The preparation method of the compound adhesive comprises the following steps: adding 2000kg of water into a glue preparation tank, then pouring 100kg of corn starch, continuously stirring, heating to 87 ℃ in a steam heating mode, and enabling the starch to be in a completely gelatinized state to obtain gelatinized corn starch; and (3) mixing 400kg of acrylic latex, 25kg of peroxide initiator and the gelatinized corn starch, keeping the temperature for 10min, finally measuring the solid content, and transferring the compound glue into a glue storage tank for use if the solid content is normal (8-12%).
The preparation method for preparing the anti-flushing water-dispersing filter non-woven fabric by using the composite adhesive comprises the following steps: and (3) dipping the raw polyester filament yarn cloth in the composite adhesive, and drying and shaping to obtain the anti-flushing water-dispersing filter non-woven cloth.
The drying mode is round screen penetrating type drying, and the drying temperature is 200 ℃.
Example 2
The embodiment provides a compound adhesive, which comprises the following components in parts by weight: 2300kg of water, 350kg of acrylic latex, 100kg of corn starch and 20kg of peroxide initiator.
The acrylic latex is an aqueous dispersion obtained by copolymerizing butyl acrylate and styrene, and the solid content of the acrylic latex is 45%.
The preparation method of the compound adhesive comprises the following steps: adding 2300kg of water into a glue preparation tank, then pouring 100kg of corn starch, continuously stirring, heating to 87 ℃ in a steam heating mode, and making the starch be in a completely gelatinized state to obtain gelatinized corn starch; 350kg of acrylic latex, 20kg of peroxide initiator and the gelatinized corn starch are mixed and subjected to heat preservation for 10min, and finally the solid content is measured and is normal (8-12%), so that the composite glue can be obtained and is transferred into a glue storage tank for use.
The preparation method for preparing the anti-flushing water-dispersing filter non-woven fabric by using the composite adhesive comprises the following steps: and (3) dipping the raw polyester filament yarn cloth in the composite adhesive, and drying and shaping to obtain the anti-flushing water-dispersing filter non-woven cloth.
The drying mode is round screen penetrating type drying, and the drying temperature is 200 ℃.
Comparative example 1
This comparative example provides a compound glue which differs from example 1 only in that: the composite gum provided by this comparative example does not contain corn starch.
Comparative example 2
The comparative example is a hydrophobic starch-based nano biological latex disclosed in CN201810658229.2, which comprises the following raw materials:
100g of corn starch; 10g of glycidyl methacrylate; 5g of acrylic acid; twenn 803 g; 1.5g of ammonium persulfate; 5g of glycerol; 120g of water;
the hydrophobic starch-based nano biological latex has the advantages that the components are too complex, the starch is mainly used as the main component, the acrylic acid is used as the auxiliary component, the acrylic acid is mainly used for improving the problem of poor water resistance of biological latex caused by water absorption of the starch, and in the technology, the starch content is large, the acrylic acid content is small, a large amount of starch can be decomposed, so that the pores of a filter material are too large, the filtering effect is obviously reduced, the acrylic acid content is low, and the anti-scattering capability of the filter material is poor. The composite adhesive of the invention takes acrylic latex as a main body, takes corn starch as an auxiliary body, the acrylic latex is added to increase the adhesive force among fibers, so that the anti-scouring capacity of the filter material is greatly improved, and the corn starch is added because the starch is gradually decomposed to generate small pores, so that the phenomenon that the pores are blocked after the filter material is used for a period of time, and the filtration efficiency and the service life of the filter material are reduced.
Test example 1
Table 1 shows the results of the performance tests of the finished product of the anti-scour-dispersion water-filtration nonwoven fabrics of examples 1-2 and comparative example 1, the test methods are carried out according to GB/T18840-2002 and GB/T24218.15-2018, and it can be seen from Table 1 that the tensile force, the extension force and the yield strength of the anti-scour-dispersion water-filtration nonwoven fabric prepared in example 1 are all superior to those of the anti-scour-dispersion nonwoven fabrics prepared in example 2 and comparative example 1, namely the anti-scour-dispersion water-filtration nonwoven fabric has stronger anti-washout and anti-deformation capabilities. Although the air permeability of the embodiment 2 and the comparative example 1 is slightly higher, the filter material is easy to block for a long time in the comparative example 1 without adding starch, and the whole physical index performance is inferior to that of the embodiment 1; the amount of acrylic acid used in example 2 was reduced, but it was found by index comparison that the elongation was high, the yield was low, and the strength in transverse and longitudinal rupture was far inferior to that of example 1, which resulted in much weaker filter material in the resistance to washout. In comprehensive consideration, the final selection of example 1 achieved relatively excellent levels in terms of physical indexes, air permeability, and sewage filtration efficiency.
Table 1 shows the results of the performance test of the finished body of the anti-run water-filter nonwoven fabrics of examples 1 to 2 and comparative example 1
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The composite adhesive is characterized by comprising the following components in parts by weight: 2400 parts of water 2100, 450 parts of acrylic latex 300, 50-125 parts of corn starch and 10-40 parts of initiator.
2. The compound glue of claim 1,
the compound adhesive comprises the following components in parts by weight: 2300 parts of water 2200-;
the acrylic latex is an aqueous dispersion obtained by copolymerizing butyl acrylate and styrene, and the solid content of the acrylic latex is 10-50%;
the initiator is a peroxide initiator.
3. The compound glue according to claim 1, wherein the preparation method of the compound glue comprises the following steps: stirring the water and the corn starch under the heating condition to obtain gelatinized corn starch; and mixing the acrylic latex, the initiator and the gelatinized corn starch, and preserving heat to obtain the composite adhesive.
4. The compound glue of claim 3,
the heating mode comprises steam heating, and the heating temperature is 75-90 ℃;
the heat preservation time is 8-12 min;
the solid content of the composite adhesive is 8-12%.
5. Use of the compound adhesive according to any one of claims 1 to 4 in the preparation of an anti-scour water-filtration nonwoven.
6. A preparation method of a dispersion-preventing water-filtering non-woven fabric is characterized by comprising the following steps: and (3) dipping the raw polyester filament yarn cloth in the composite adhesive, and drying and shaping to obtain the anti-flushing water-dispersing filter non-woven cloth.
7. The method of making an erosion resistant water filtration nonwoven fabric as in claim 6,
the drying mode comprises rotary screen penetrating drying, and the drying temperature is 150-240 ℃;
the preparation method of the polyester filament raw cloth is a polyester spun-bonded filament needle punching method.
8. The method for preparing the scour protection water filter non-woven fabric according to claim 6 or 7, wherein the method for preparing the polyester filament raw fabric comprises the following steps:
s1: sequentially crystallizing and drying the fiber-grade semi-dull polyester chips;
s2: carrying out melting treatment on the fiber-grade semi-dull polyester chips subjected to drying treatment to obtain a melt;
s3: sequentially carrying out metering spinning, cooling drafting and splitting and lapping treatment on the melt to obtain a fiber web with an upper layer and a lower layer;
s4: and sequentially carrying out needling reinforcement and hot rolling treatment on the fiber web with the upper layer and the lower layer to obtain the polyester filament raw cloth.
9. The method of making an erosion resistant water filtration nonwoven fabric as in claim 8,
the temperature of the crystallization treatment is 175-185 ℃, the time of the crystallization treatment is 10-20min, and the equipment of the crystallization treatment is a boiling type semi-closed crystallization bed;
the temperature of the drying treatment is 165-175 ℃, the time of the drying treatment is 5-7h, and the drying treatment equipment comprises a drying tower;
the melt processing apparatus comprises a screw extruder;
the needling reinforcement treatment comprises two procedures of pre-needling and main needling;
the needling density of the pre-needling is 15-25 needling/cm2The needling density of the main needling is 20-30 needling/cm2(ii) a The needling depth of the pre-needling is 5-15mm, and the needling depth of the main needling is 5-10 mm;
the temperature of the compression roller for hot rolling treatment is 150-250 ℃, and the pressure for hot rolling treatment is 45-55 bar.
10. An anti-scour water-filter nonwoven prepared by the method for preparing an anti-scour water-filter nonwoven according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563788.3A CN114351463B (en) | 2021-12-20 | 2021-12-20 | Composite adhesive, application thereof, anti-water-scattering filter nonwoven fabric and preparation method thereof |
Applications Claiming Priority (1)
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| US5532300A (en) * | 1994-08-12 | 1996-07-02 | National Starch And Chemical Investment Holding Corporation | Water-borne, water redispersible, laminating adhesives for nonwoven applications |
| CN106621569A (en) * | 2016-12-28 | 2017-05-10 | 怀宁县菲豹服饰有限公司 | Feather non-woven composite needle-punched filter material used for sewage treatment and preparation method thereof |
| CN109826012A (en) * | 2019-01-16 | 2019-05-31 | 浙江理工大学 | A kind of durable hydrophilic finishing agent and preparation method thereof for non-woven cloth |
| CN109989270A (en) * | 2019-03-28 | 2019-07-09 | 湖北顶新环保生物质材料有限公司 | A kind of high bound starch slurry and preparation method thereof |
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| US5532300A (en) * | 1994-08-12 | 1996-07-02 | National Starch And Chemical Investment Holding Corporation | Water-borne, water redispersible, laminating adhesives for nonwoven applications |
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| CN109826012A (en) * | 2019-01-16 | 2019-05-31 | 浙江理工大学 | A kind of durable hydrophilic finishing agent and preparation method thereof for non-woven cloth |
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