CN116732699A - Super absorbent wood pulp composite spunlaced non-woven fabric and preparation method thereof - Google Patents
Super absorbent wood pulp composite spunlaced non-woven fabric and preparation method thereof Download PDFInfo
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- CN116732699A CN116732699A CN202310603547.XA CN202310603547A CN116732699A CN 116732699 A CN116732699 A CN 116732699A CN 202310603547 A CN202310603547 A CN 202310603547A CN 116732699 A CN116732699 A CN 116732699A
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- wood pulp
- fibers
- super absorbent
- woven fabric
- nonwoven fabric
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- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 66
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000002250 absorbent Substances 0.000 title claims abstract description 23
- 230000002745 absorbent Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 97
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 239000004088 foaming agent Substances 0.000 claims abstract description 30
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 239000003039 volatile agent Substances 0.000 claims abstract description 6
- 229920004933 Terylene® Polymers 0.000 claims abstract description 5
- 238000013329 compounding Methods 0.000 claims abstract description 5
- -1 polypropylene Polymers 0.000 claims abstract description 5
- 229920001155 polypropylene Polymers 0.000 claims abstract description 5
- 238000009960 carding Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims abstract description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 7
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 239000012209 synthetic fiber Substances 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 241000381602 Vachellia nebrownii Species 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
- D04H1/26—Wood pulp
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/43—Acrylonitrile series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/152—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen having a hydroxy group bound to a carbon atom of a six-membered aromatic ring
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The application relates to a super absorbent wood pulp composite spunlaced non-woven fabric and a preparation method thereof, wherein the scheme comprises the steps of S00, respectively carrying out opening mixing on A fibers and wood pulp fibers; wherein, the fiber A is one or a mixture of terylene and polypropylene; s10, carding the opened and mixed A fibers and wood pulp fibers respectively; s20, processing the carded A fibers through a groove processing agent and volatile agent system to leave grooves on the surfaces of the A fibers; uniformly spraying foaming agent on the carded wood pulp fibers; s30, carrying out lapping and compounding on the A fibers and the wood pulp fibers to obtain a fiber web; s40, carrying out hydro-entangled reinforcement on the fiber web; s50, heating the non-woven fabric to enable the non-woven fabric to expand and leave pores by releasing gas after the foaming agent evaporates; s60, finishing and shaping the non-woven fabric to finish the preparation. The non-woven fabric prepared by the application can obviously improve the water absorption rate and the thickness, and meanwhile, the tensile stress is not obviously reduced.
Description
Technical Field
The application relates to the technical field of non-woven fabric production, in particular to super absorbent wood pulp composite spunlaced non-woven fabric and a preparation method thereof.
Background
The water absorption is one of the most important performance indexes of the wiping-type nonwoven fabric. Wood pulp fibers have excellent water absorbency, air permeability as natural fibers, but have poor mechanical properties, resulting in low strength of nonwoven fabrics. Therefore, synthetic fibers such as terylene, polypropylene and the like are required to be added in the production process of the water-absorbent wood pulp spunlaced nonwoven fabric. The synthetic fiber part can promote the mechanical properties of wood pulp composite spunlaced non-woven fabrics, but synthetic fiber's hydroscopicity is poor, and under the injection rivers effect of water thorn head, synthetic fiber has taken up the space between the wood pulp fiber, and the structure of non-woven fabrics is comparatively inseparable, finally leads to the hydroscopicity greatly reduced of fabric.
Therefore, there is a need for a super absorbent wood pulp composite spunlaced nonwoven fabric with good water absorbability and a preparation method thereof, so as to solve the problems in the prior art.
Disclosure of Invention
The application aims at solving the problems existing in the prior art and provides a super absorbent wood pulp composite spunlaced non-woven fabric and a preparation method thereof.
In order to achieve the purpose of the application, the application adopts the following technical scheme: the preparation method of the super absorbent wood pulp composite spunlaced non-woven fabric comprises the following steps:
s00, respectively carrying out opening mixing on the A fibers and the wood pulp fibers;
wherein, the fiber A is one or a mixture of terylene and polypropylene;
s10, carding the opened and mixed A fibers and wood pulp fibers respectively;
s20, processing the carded A fibers through a groove processing agent and volatile agent system to leave grooves on the surfaces of the A fibers; uniformly spraying foaming agent on the carded wood pulp fibers;
s30, carrying out lapping and compounding on the A fibers and the wood pulp fibers to obtain a fiber web;
s40, carrying out hydroentanglement reinforcement on the fiber web to obtain a non-woven fabric;
s50, heating the non-woven fabric to enable the non-woven fabric to expand and leave pores by releasing gas after the foaming agent evaporates;
s60, finishing and shaping the non-woven fabric to finish the preparation.
Further, in step S20, the trench treating agent includes one or more of phenol, toluene, and dioctyl phthalate.
Further, in step S20, the volatile agent system includes ethanol.
Further, in step S20, the mass ratio of the trench treatment agent to the volatile agent system is 3:2.
Further, in the step S20, the mass ratio of the foaming agent to the wood pulp fiber is 1:10.
Further, the foaming agent is a powdery foaming agent.
Further, in step S30, the lapping compound process adopts a cross lapping or semi-cross lapping mode.
Further, in the step S30, the mass percentage of the A fiber is 30-50 wt%, and the mass percentage of the wood pulp fiber is 50-70 wt%.
Further, in step S50, the nonwoven fabric is heated with a heating roller and the temperature is made to exceed the boiling point of the foaming agent.
The super absorbent wood pulp composite spunlaced non-woven fabric is prepared by the super absorbent wood pulp composite spunlaced non-woven fabric.
Compared with the prior art, the application has the following beneficial effects:
1. after the A fibers are treated by the groove treatment agent and the volatilizing agent system, the distance between the A fibers and the wood pulp fibers can be increased by the grooves. The foaming agent is added into the wood pulp fibers, the distance between the wood pulp fibers is increased by the gas released under the high-temperature foaming condition, the distance between the A fibers and the wood pulp fibers is further increased, the formed non-woven fabric becomes fluffy, the thickness is increased, and the water absorption performance is remarkably improved;
2. the water absorption rate of the wood pulp composite spunlaced non-woven fabric treated by the preparation method can be improved by more than 40%, the tensile stress is not obviously reduced, and the thickness is improved by more than 50%.
Drawings
FIG. 1 is a flow chart of the production process of the present application;
fig. 2 is a specific process flow diagram of key steps in fig. 1.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
Example 1
As shown in fig. 1-2, the preparation method of the super absorbent wood pulp composite spunlaced nonwoven fabric comprises the following steps:
s00, respectively carrying out opening mixing on the A fibers and the wood pulp fibers;
wherein, the fiber A is one or a mixture of terylene and polypropylene;
s10, carding the opened and mixed A fibers and wood pulp fibers respectively;
s20, processing the carded A fibers through a groove processing agent and volatile agent system to leave grooves on the surfaces of the A fibers; uniformly spraying foaming agent to the carded wood pulp fiber at 60 ℃;
wherein the groove treating agent comprises one or more of phenol, toluene and dioctyl phthalate, the volatilizing agent system comprises ethanol, and the mass ratio of the groove treating agent to the volatilizing agent system is 3:2;
wherein the mass ratio of the foaming agent to the wood pulp fiber is 1:10;
preferably, the foaming agent is a powder-type foaming agent;
thus, along with the volatilization of the ethanol solution, phenol, toluene and dioctyl phthalate also leave the surface of the fiber, and grooves are left on the surface of the fiber A, so that the contact area of the fiber A with water is increased;
s30, carrying out lapping and compounding on the A fibers and the wood pulp fibers to obtain a fiber web;
in the embodiment, the lapping compound technology adopts a cross lapping or semi-cross lapping mode, the mass percentage of the A fiber is 30 to 50 percent, and the mass percentage of the wood pulp fiber is 50 to 70 percent;
s40, carrying out hydroentanglement reinforcement on the fiber web to obtain a non-woven fabric;
s50, heating the nonwoven fabric subjected to hydroentanglement reinforcement by adopting a heating roller to enable the temperature to exceed the boiling point of a foaming agent, and releasing gas after the foaming agent is evaporated to enable the nonwoven fabric to expand and leave air holes, wherein the heating temperature is 180 ℃;
s60, performing after-treatment shaping on the non-woven fabric obtained after foaming, wherein the after-treatment shaping comprises the steps of heat shaping and curling of the non-woven fabric, and the heat shaping temperature is 120 ℃ to finish the preparation.
In this embodiment, S20 to S50 correspond to the key steps, that is, as shown in fig. 2, the hydroentangling head in the drawing means that the hydroentangling reinforcement is performed, and the drying box means that the finishing shaping is performed.
Example two
The wood pulp and the PP fibers are treated based on the key steps of the first embodiment, firstly, the PP fibers are treated by adopting a groove treating agent and a volatilizing agent system, wherein the groove treating agent is toluene and dioctyl phthalate, the mass ratio of the groove treating agent to the dioctyl phthalate is 1:5, the volatilizing agent is ethanol, and the mass ratio of the groove treating agent to the volatilizing agent is 3:2. Spraying the solution on the surface of the PP fiber at the temperature of 60 ℃, enabling toluene and dioctyl phthalate to leave the surface of the fiber along with volatilization of the ethanol solution, and leaving grooves on the surface of the fiber A, so that the contact area of the fiber A with water is increased; uniformly spraying a foaming agent into the carded wood pulp fibers, wherein the type of the foaming agent is powder, and the mass ratio of the foaming agent to the wood pulp fibers is 1:10. In the experiments of this example, a blank (no key step treatment) was used for the control.
The results are shown in Table 1 below (characterization of properties of different proportions of wood pulp/PP fiber composite spunlaced nonwoven fabric):
TABLE 1
It is apparent that the water absorption and thickness can be significantly increased over the blank after the critical step treatment of example one without significant decrease in tensile stress. While different proportions of wood pulp/PP fibers have a significant effect.
Example III
The wood pulp and the PET fiber are treated based on the key steps of the first embodiment, firstly, the PET fiber is treated by adopting a groove treating agent and a volatilizing agent system, wherein the groove treating agent is phenol and toluene with the mass ratio of 1:2, the volatilizing agent is ethanol, and the mass ratio of the groove treating agent to the volatilizing agent is 3:2. Spraying the solution on the surface of the PET fiber at 60 ℃, wherein phenol and toluene leave the surface of the fiber along with volatilization of the ethanol solution, and grooves are left on the surface of the PET fiber, so that the contact area of the PET fiber and water is increased; uniformly spraying a foaming agent into the carded wood pulp fibers, wherein the type of the foaming agent is powder, and the mass ratio of the foaming agent to the wood pulp fibers is 1:10. In the experiments of this example, a blank group was used for comparison.
The results are shown in Table 2 below (characterization of properties of different proportions of wood pulp/PET fiber composite spunlaced nonwoven fabrics):
TABLE 2
It is apparent that this example significantly improved water absorption and thickness over the blank after the critical step treatment of example one, without significant reduction in tensile stress. While different proportions of wood pulp/PP fibers have a significant effect.
Example IV
In the treatment process of wood pulp and A fiber based on the key steps of the first embodiment, the proportion of a groove treatment agent and a volatilizing agent is adjusted, the solution is sprayed on the surface of the PET fiber at 60 ℃, and along with volatilization of an ethanol solution, phenol and toluene also leave the surface of the fiber and leave grooves on the surface of the PET fiber, so that the contact area of the PET fiber and water is increased; uniformly spraying a foaming agent into the carded wood pulp fibers, wherein the type of the foaming agent is powder, and the mass ratio of the foaming agent to the wood pulp fibers is 1:10. In the experiments of this example, a blank group was used for comparison.
The results are shown in the following table 3 (performance characterization of wood fiber composite spunlaced nonwoven fabrics with different groove treatment and volatilizing agent ratios):
TABLE 3 Table 3
Obviously, the water absorption and thickness of the non-woven fabric are obviously increased compared with those of a blank group by adopting the groove treating agent and the volatilizing agent, and the water absorption and thickness of the non-woven fabric are optimal when the mass ratio of the groove treating agent to the volatilizing agent is 3:2 under the same condition.
Example five
Super absorbent wood pulp composite spunlaced nonwoven fabric prepared based on preparation method of embodiment one.
The application is not described in detail in the prior art, and therefore, the application is not described in detail.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Although specific terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the application; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present application.
The present application is not limited to the above-mentioned preferred embodiments, and any person can obtain various other products without departing from the scope of the present application, but any changes in shape or structure of the present application, all having the same or similar technical solutions, fall within the scope of the present application.
Claims (10)
1. The preparation method of the super absorbent wood pulp composite spunlaced non-woven fabric is characterized by comprising the following steps of:
s00, respectively carrying out opening mixing on the A fibers and the wood pulp fibers;
wherein the fiber A is one or a mixture of terylene and polypropylene;
s10, carding the opened and mixed A fibers and wood pulp fibers respectively;
s20, processing the carded A fibers through a groove processing agent and volatile agent system to leave grooves on the surfaces of the A fibers; uniformly spraying a foaming agent on the carded wood pulp fibers;
s30, carrying out lapping and compounding on the fiber A and the wood pulp fiber to obtain a fiber web;
s40, carrying out hydroentanglement reinforcement on the fiber web to obtain a non-woven fabric;
s50, heating the non-woven fabric to enable the non-woven fabric to expand and leave pores by releasing gas after the foaming agent is evaporated;
s60, finishing and shaping the non-woven fabric to finish the preparation.
2. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 1, wherein in step S20, the groove treatment agent comprises one or more of phenol, toluene and dioctyl phthalate.
3. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 1, wherein in step S20, the volatilizing agent system comprises ethanol.
4. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 1, wherein in step S20, the mass ratio of the groove treatment agent to the volatilizing agent system is 3:2.
5. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 1, wherein in step S20, the mass ratio of the foaming agent to the wood pulp fiber is 1:10.
6. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 5, wherein the foaming agent is a powdery foaming agent.
7. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to claim 1, wherein in step S30, the lapping and compounding process adopts a cross lapping or semi-cross lapping mode.
8. The method for preparing super absorbent wood pulp composite spunlaced nonwoven fabric according to any one of claims 1 to 7, wherein in the step S30, the mass percentage of the a fibers is 30 to 50wt% and the mass percentage of the wood pulp fibers is 50 to 70wt%.
9. The method for producing super absorbent wood pulp composite spunlaced nonwoven fabric according to any one of claims 1 to 7, wherein in step S50, the nonwoven fabric is heated by a heating roller so that the temperature exceeds the boiling point of the foaming agent.
10. The super absorbent wood pulp composite spunlaced nonwoven fabric is characterized by being prepared by the super absorbent wood pulp composite spunlaced nonwoven fabric according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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