CN111719240A - Chemical fiber degradable membrane and preparation method and application thereof - Google Patents
Chemical fiber degradable membrane and preparation method and application thereof Download PDFInfo
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- CN111719240A CN111719240A CN202010522559.6A CN202010522559A CN111719240A CN 111719240 A CN111719240 A CN 111719240A CN 202010522559 A CN202010522559 A CN 202010522559A CN 111719240 A CN111719240 A CN 111719240A
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- chemical fiber
- film
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- fiber degradation
- pulp
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Classifications
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- 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
- D04H1/4274—Rags; Fabric scraps
-
- 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
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Catching Or Destruction (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a chemical fiber degradable membrane and a preparation method and application thereof. The chemical fiber degradation film is prepared by taking 30-40% of regenerated cotton and 60-70% of chemi-mechanical fiber as raw materials through mixing, stirring, disc grinding, screening, defibering, pulp spraying, extruding, drying, film hanging, calendaring and rewinding. The invention utilizes various old clothes, old quilts and waste materials cut by clothing factories, is environment-friendly, changes waste materials into valuables, can be used as a mulching film, can also be used for processing convenient bags of various types, has tensile force more than two times of that of a plastic film, has good quality, does not degrade for 6-8 months under the conditions of wind, sun and rain, and prolongs the degradation time. The preparation method of the chemical fiber degradation film adopts a one-machine film forming process, saves fuel, electricity and labor, has low manufacturing cost and low cost, has market competitiveness and is deeply accepted by peasant consumers.
Description
Technical Field
The invention relates to the technical field of degradable membrane production and processing, in particular to a chemical fiber degradable membrane and a preparation method and application thereof.
Background
At present, mulching films or convenient bags on domestic markets are generally prepared from plastic materials, and the plastic materials are generally prepared from petrochemical raw materials, so that the mulching films or the convenient bags have three defects. Firstly, the plastic film or the convenient bag prepared by the plastic material has poor tensile resistance; secondly, petroleum chemical salary resources face a state of transitional exploitation, and the regeneration speed of the resources is slow, so that the petroleum chemical salary resources face a trend of resource exhaustion; in addition, the mulching film or the convenient bag prepared by the material is difficult to degrade, thereby causing great pollution to the environment. Therefore, the use of degradable and easily regenerated materials and the improvement of tensile strength become a problem in the use of the prior mulching film or convenient bag.
Disclosure of Invention
Aiming at the technical problems, the invention provides a chemical fiber degradation film and a preparation method and application thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention aims to provide a chemical fiber degradation film which is prepared by taking 30-40% of regenerated cotton and 60-70% of chemical fiber as raw materials through mixing, stirring, disc grinding, screening, fluffing, pulp spraying, extruding, drying, film hanging, calendaring and rewinding.
The chemical fiber degradation film is prepared by taking old clothes, old quilts or leftover materials of quilt and clothes factories as raw materials, bleaching and sterilizing, selecting materials, shredding, buckling into 20-degree fibers and carding.
Specifically, old clothes are placed into a pool and soaked in hydrogen peroxide with the content of 25-30% for 12-24 hours, so that the bleaching, sterilizing and disinfecting effects are achieved. Then the cotton is conveyed to a material selecting machine to separate out sundries such as hard iron nails and the like, and then the hard iron nails and the like are shredded by a tearing machine and then are buckled into 20-degree fibers by a buckling machine, and the fibers are combed into regenerated cotton by a carding machine for standby.
The buckling degree of the chemical fiber degradation film obtained in the disc grinding step is 32-35 degrees.
After the defibering step, 8-10% of wet strength agent is added and mixed and propelled by a propeller, and the mixture is sent into a material well after 15-20 minutes.
The extrusion force of the chemical fiber degradation membrane in the extrusion step exceeds 6 kg.
The moisture content of the chemical fiber degradation film in the drying step is less than or equal to 20 percent.
In the chemical fiber degradation film, the waterproof film is hung by 20-30% of waterproof agent in the film hanging step.
The moisture content of the chemical fiber degradation film in the calendaring step is less than or equal to 10 percent.
The invention also aims to provide a preparation method of the chemical fiber degradation film, which comprises the following steps: mixing and stirring uniformly regenerated cotton with the mass fraction of 30-40% and chemical mechanical fiber with the mass fraction of 60-70% by using a high-concentration hydrapulper, and putting into a material well; then feeding the mixture into a double-disc pulping machine by using a material lifting pump to reach a degree of resolution of 32-35 ℃; and then the mixture is sent into a pressure screen for screening and then sent into a material tank, then sent into a fluffer for fluffing, then sent into a pulp tank, added with 8-10% of wet strength agent, mixed and propelled by a propeller, sent into a material well after 15-20 minutes, sent into a pulp sprayer for surfing the net by a metering pump, sprayed evenly, and has the same horizontal and vertical balance tension, extruded by two squeezing rollers, the extrusion force exceeds 6kg, and then the mixture is dried in a drying cylinder, dried until the water content is less than or equal to 20%, added with 20-30% of waterproof agent by a glue applicator, dried and calendered in 8 cylinders after film hanging, and the compactness is increased, and the smoothness and the compactness are increased by calendering by 4 calenders after the mixture is discharged, the water content is less than or equal to 10%, and then the mixture is rewound by a rewinder.
The invention also aims to provide application of the chemical fiber degradation film in preparation of mulching films or convenient bags. Specifically, regenerated cotton can be prepared as a raw material for processing the mulching film after the old clothing and the old quilt are bleached; leftover materials cut by a clothing factory are processed into regenerated cotton to be used as raw materials of the degradable convenient bag.
Compared with the prior art, the invention has the beneficial effects that:
the chemical fiber degradation film utilizes various old clothes, old quilts and leftover materials cut by clothing factories, is environment-friendly, changes waste materials into valuables, can be used as a mulching film, can also be used for processing various types of convenient bags, has tensile force more than twice of that of a plastic film, has good quality, does not degrade for 6-8 months under the conditions of wind, sun and rain, and prolongs the degradation time. The preparation method of the chemical fiber degradation membrane adopts a one-machine membrane forming process, saves fuel, electricity and labor, has low manufacturing cost and low cost, has market competitiveness and is well accepted by peasant consumers.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the following embodiments. The instruments and equipment adopted in the embodiment of the invention are all commercially available products. For example, a high consistency hydropulper, available from Shandong Ongzhong and machinery Inc., model FGS-8m3Sieve pore diameter is 16 mm; the model of the double-disc refiner is FPM-450; pressure screen, model FLS-0.8m2And is matched with a stainless steel bar type screen cylinder.
Example 1 preparation of chemical fiber-degraded mulch film
Preparation of regenerated cotton
The old clothes are put into a pool and soaked for 24 hours by hydrogen peroxide with the content of 27 percent, so as to achieve the bleaching, sterilization and disinfection effects. Then conveying the cotton to a sorting machine, separating out sundries such as hard iron nails and the like, shredding the cotton by a tearing machine, then buckling the cotton into 20-degree fibers by a buckling machine, and carding the fibers into regenerated cotton for later use by a carding machine.
Mixing and stirring the regenerated cotton with the mass fraction of 30% and the chemical mechanical fiber with the mass fraction of 70% uniformly by using a high-concentration hydraulic pulper, and putting the mixture into a material well after the mixture reaches the standard; then the mixture is sent into a 450 type double-disc refiner by a material-lifting pump to reach the degree of resolution of 32 ℃; then the materials are sent into a material pool after being screened by a new pressure screen of high agriculture, and the materials are reprocessed after slag materials are recovered to reach the standard for reutilization. And (2) sending the screened qualified material into a fluffer for fluffing, sending the qualified material into a pulp tank, adding 8% of wet strength agent, performing mixed propulsion by using a propeller, sending the qualified material into a material well after 15 minutes, sending the qualified material into a pulp spraying machine for surfing the pulp spraying machine by using a metering pump, uniformly spraying the pulp, ensuring the same horizontal and vertical balanced tension, extruding the pulp by using two squeezing rollers, wherein the extrusion force is 6.5 kilograms, then feeding the pulp into a drying cylinder, drying the pulp until the moisture content is less than or equal to 20%, adding 20% of waterproof agent into a glue applicator, drying and calendaring the pulp in 8 cylinders after film hanging to increase the compactness, calendaring the pulp in 4 cylinders after film hanging to increase the smoothness and the compactness, wherein the moisture content is less than or equal to 10%, and rewinding by using. And cutting the mulching film into mulching films with various sizes according to the specification required by a user.
Example 2 preparation of chemical fiber-degradable mulching film
Preparation of regenerated cotton
The preparation process of the regenerated cotton is the same as the preparation method of the embodiment 1 by using the old quilt as a raw material.
Mixing and stirring the regenerated cotton with the mass fraction of 40% and the chemical mechanical fiber with the mass fraction of 60% uniformly by using a high-concentration hydraulic pulper, and putting the mixture into a material well after the mixture reaches the standard; then the mixture is sent into a 450 type double-disc refiner by a material-lifting pump to reach the buckling degree of 35 ℃; then the materials are sent into a material pool after being screened by a new pressure screen of high agriculture, and the materials are reprocessed after slag materials are recovered to reach the standard for reutilization. And (2) sending the screened qualified material into a fluffer for fluffing, sending the qualified material into a pulp tank, adding 10% of wet strength agent, performing mixed propulsion by using a propeller, sending the qualified material into a material well after 20 minutes, sending the qualified material into a pulp spraying machine for surfing the pulp spraying machine by using a metering pump, uniformly spraying the pulp, ensuring the same horizontal and vertical balanced tension, extruding the pulp by using two extrusion rollers, wherein the extrusion force is 6.3 kilograms, then feeding the pulp into a drying cylinder, drying the pulp until the moisture content is less than or equal to 20%, adding 30% of waterproof agent by using a glue applicator, drying and calendaring the pulp in 8 cylinders after film hanging to increase the compactness, calendaring the pulp in 4 cylinders after film leaving to increase the smoothness and the compactness, wherein the moisture content is less than or equal to 10%, and rewinding. And cutting the mulching film into mulching films with various sizes according to the specification required by a user.
EXAMPLE 3 preparation of chemical fiber degradation instant bag film
Preparation of regenerated cotton
The preparation process of the regenerated cotton is the same as the preparation method of the embodiment 1 by using the leftover materials of the bedding and clothing factories as raw materials.
Mixing and stirring the regenerated cotton with the mass fraction of 35% and the chemical mechanical fiber with the mass fraction of 65% uniformly by using a high-concentration hydraulic pulper, and putting the mixture into a material well after the mixture reaches the standard; then the mixture is sent into a 450 type double-disc refiner by a material-lifting pump to reach the buckling degree of 35 ℃; then the materials are sent into a material pool after being screened by a new pressure screen of high agriculture, and the materials are reprocessed after slag materials are recovered to reach the standard for reutilization. And (2) sending the screened qualified material into a fluffer for fluffing, sending the qualified material into a pulp tank, adding 9% of wet strength agent, performing mixed propulsion by using a propeller, sending the qualified material into a material well after 15 minutes, sending the qualified material into a pulp spraying machine for surfing the pulp spraying machine by using a metering pump, uniformly spraying the pulp, ensuring the same horizontal and vertical balanced tension, extruding the pulp by using two squeezing rollers, wherein the extrusion force is 6.4 kilograms, then feeding the pulp into a drying cylinder, drying the pulp until the moisture content is less than or equal to 20%, adding 25% of waterproof agent into a glue applicator, drying and calendaring the pulp in 8 cylinders after film hanging to increase the compactness, calendaring the pulp in 4 cylinders after film hanging to increase the smoothness and the compactness, wherein the moisture content is less than or equal to 10%, and rewinding by using. Cutting into convenient bag films with various sizes according to the specification required by users.
Comparative example 1
The process for preparing the regenerated cotton by using the old clothes as the raw material is the same as the preparation method in the embodiment 1. The raw materials of the chemical fiber degradation mulching film are regenerated cotton with the mass fraction of 25% and chemical fiber with the mass fraction of 75%, and other process parameters are the same as those in the example 1.
Comparative example 2
The preparation process of the regenerated cotton is the same as that of the example 1 by using the old quilt as a raw material. The raw materials of the chemical fiber degradable mulching film are regenerated cotton with the mass fraction of 45% and chemical mechanical fiber with the mass fraction of 55%, and other process parameters are the same as those in example 2.
Comparative example 3
The preparation process of the regenerated cotton is the same as the preparation method of the embodiment 1 by using the leftover materials of the bedding and clothing factories as raw materials. The process for preparing raw cotton was the same as that used in example 1. The chemical fiber degradation convenient bag film raw material selects the regenerated cotton with the mass fraction of 45 percent and the chemical fiber with the mass fraction of 55 percent, and other process parameters are the same as those in the embodiment 3.
Experimental example Performance verification
Tensile tests and degradation tests are respectively carried out on the common plastic mulching films and the plastic bags in the examples 1-3 and the comparative examples 1-3 and on the market, the tensile tests are completed by adopting tensile force, the degradation tests are respectively observed by placing samples in storehouses and outdoors, and the test results are shown in the table below.
The tensile test result shows that the tensile strength of the common plastic mulching film reaches 12kg, and the tensile strength of the chemical fiber degradation film prepared by the embodiment of the invention reaches more than 20 kg. The degradation test result shows that the chemical fiber degradation film stored in the room can be stored for 2-3 years without being exposed to wind, sunlight and rain, and the chemical fiber degradation film stored in the room can be stored for 8 months without being exposed to wind, sunlight and rain. Meanwhile, the tensile property is improved after the proportion of the regenerated cotton is reduced, but the degradation time is prolonged; the tensile property is reduced after the proportion of the regenerated cotton is increased, but the degradation time is shortened. Therefore, the proportion of the regenerated cotton and the chemimechanical fiber is finally selected by comprehensively considering the resistance performance and the degradation time.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but these modifications or substitutions do not substantially depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The chemical fiber degradation film is characterized by being prepared by taking 30-40% of regenerated cotton and 60-70% of chemical fiber as raw materials through mixing, stirring, disc grinding, screening, fluffing, pulp spraying, extruding, drying, film hanging, calendaring and rewinding.
2. The chemical fiber degradation film according to claim 1, wherein the regenerated cotton is prepared by taking old clothes, old quilts or leftover materials of quilt and clothing factories as raw materials, and carrying out bleaching, sterilization, material selection, shredding, buckling and decomposition into 20-degree fibers and carding.
3. The chemical fiber degradation film according to claim 1, wherein the degree of delinking achieved by the disc grinding step is 32 to 35 degrees.
4. The chemical fiber degradation membrane according to claim 1, wherein 8% -10% of wet strength agent is added after the defibering step, and the wet strength agent is mixed and propelled by a propeller and is sent into a material well after 15-20 minutes.
5. The chemical fiber degradation membrane according to claim 1, wherein the pressing force of the pressing step exceeds 6 kg.
6. The chemical fiber degradation film according to claim 1, wherein the moisture content in the drying step is 20% or less.
7. The chemical fiber degradation film of claim 1, wherein the film forming step uses 20% to 30% of a water repellent agent to form the water repellent film.
8. The chemical fiber degradation film according to claim 1, wherein the moisture content in the calendering step is 10% or less.
9. The method for preparing the chemical fiber degradation film according to claim 1, comprising the steps of: mixing and stirring uniformly regenerated cotton with the mass fraction of 30-40% and chemical mechanical fiber with the mass fraction of 60-70% by using a high-concentration hydrapulper, and putting into a material well; then feeding the mixture into a double-disc pulping machine by using a material lifting pump to reach a degree of resolution of 32-35 ℃; and then the mixture is sent into a pressure screen for screening and then sent into a material tank, then sent into a fluffer for fluffing, then sent into a pulp tank, added with 8 to 10 percent of wet strength agent, mixed and propelled by a propeller, sent into a material well after 15 to 20 minutes, sent into a pulp sprayer for surfing the net by a metering pump, sprayed uniformly, and equally in horizontal and vertical balance tension, extruded by two extrusion rollers, the extrusion force exceeds 6 kilograms, and then sent into a drying cylinder, dried until the water content is less than or equal to 20 percent, added with 20 to 30 percent of waterproof agent by a glue applicator, dried and calendered by 8 cylinders after film hanging, the compactness is increased, and the smoothness and the compactness are increased by calendering by 4 calenders after cylinder descending, the water content is less than or equal to 10 percent, and then sent into a rewinder for rewinding, thus obtaining the chemical.
10. Use of the chemical fiber degradation film of claim 1 for preparing mulching film or instant bag.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010522559.6A CN111719240B (en) | 2020-06-10 | 2020-06-10 | Chemical fiber degradable membrane and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010522559.6A CN111719240B (en) | 2020-06-10 | 2020-06-10 | Chemical fiber degradable membrane and preparation method and application thereof |
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| CN111719240A true CN111719240A (en) | 2020-09-29 |
| CN111719240B CN111719240B (en) | 2022-08-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629398A (en) * | 2009-06-08 | 2010-01-20 | 江南大学 | Naturally degradative cotton linter plastic film and manufacture process thereof |
| DE102009031635A1 (en) * | 2009-07-03 | 2011-01-05 | Fleissner Gmbh | Inexpensive non-woven, comprises fiber and/or filament layer consolidated using water with layer of fibers from cotton and/or wool waste, e.g. gin motes |
| CN102943414A (en) * | 2012-12-10 | 2013-02-27 | 江南大学 | High-water repellency high-photopermeability biodegradable cotton agricultural thin film |
| CN104593910A (en) * | 2015-02-05 | 2015-05-06 | 宜宾纬络纺织有限公司 | Preparation method of regenerated cotton |
| CN105178094A (en) * | 2015-06-17 | 2015-12-23 | 华南理工大学 | Agricultural degradable thermal-insulation mulch film manufacturing method |
| CN106718414A (en) * | 2016-12-07 | 2017-05-31 | 魏坤年 | A kind of degradable high-performance string synthesis agricultural mulching and preparation method thereof |
| CN107130367A (en) * | 2016-12-05 | 2017-09-05 | 广东乐将生物科技有限公司 | Mulch film and its application method that a kind of chemical fibre is crosslinked with natural fiber |
| CN110870429A (en) * | 2018-09-04 | 2020-03-10 | 魏颖 | Green agricultural mulching film and preparation method thereof |
-
2020
- 2020-06-10 CN CN202010522559.6A patent/CN111719240B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629398A (en) * | 2009-06-08 | 2010-01-20 | 江南大学 | Naturally degradative cotton linter plastic film and manufacture process thereof |
| DE102009031635A1 (en) * | 2009-07-03 | 2011-01-05 | Fleissner Gmbh | Inexpensive non-woven, comprises fiber and/or filament layer consolidated using water with layer of fibers from cotton and/or wool waste, e.g. gin motes |
| CN102943414A (en) * | 2012-12-10 | 2013-02-27 | 江南大学 | High-water repellency high-photopermeability biodegradable cotton agricultural thin film |
| CN104593910A (en) * | 2015-02-05 | 2015-05-06 | 宜宾纬络纺织有限公司 | Preparation method of regenerated cotton |
| CN105178094A (en) * | 2015-06-17 | 2015-12-23 | 华南理工大学 | Agricultural degradable thermal-insulation mulch film manufacturing method |
| CN107130367A (en) * | 2016-12-05 | 2017-09-05 | 广东乐将生物科技有限公司 | Mulch film and its application method that a kind of chemical fibre is crosslinked with natural fiber |
| CN106718414A (en) * | 2016-12-07 | 2017-05-31 | 魏坤年 | A kind of degradable high-performance string synthesis agricultural mulching and preparation method thereof |
| CN110870429A (en) * | 2018-09-04 | 2020-03-10 | 魏颖 | Green agricultural mulching film and preparation method thereof |
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| CN111719240B (en) | 2022-08-02 |
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