CN106012293B - A kind of preparation method of the water-soluble non-woven cloth based on polyvinyl alcohol - Google Patents
A kind of preparation method of the water-soluble non-woven cloth based on polyvinyl alcohol Download PDFInfo
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- CN106012293B CN106012293B CN201610586155.7A CN201610586155A CN106012293B CN 106012293 B CN106012293 B CN 106012293B CN 201610586155 A CN201610586155 A CN 201610586155A CN 106012293 B CN106012293 B CN 106012293B
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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
- D04H1/4326—Condensation or reaction polymers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Woven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The preparation method of the present invention relates to a kind of water-soluble non-woven cloth based on polyvinyl alcohol, belongs to textile chemical fiber technical field.The present invention cooperates with plasticised polyvinyl alcohol using water and polyethylene glycol oxide, and by plasticized melt spinning, online drawing-off, direct networking, prepare the water-soluble non-woven cloth of polyvinyl alcohol.Preparation method of the present invention is simple, pollution-free, at low cost, applied widely, application value is high.The non-woven cloth is embroidered in clothes and there is wide market application prospect in the i.e. fields such as abandoning property medical health care products.
Description
Technical field
The preparation method of the present invention relates to a kind of water-soluble non-woven cloth based on polyvinyl alcohol belongs to textile chemical fiber technology neck
Domain.
Background technology
Polyvinyl alcohol based water-soluble interlaced fabric is a kind of green material, and raw material sources are abundant, and product properties is excellent
It is good, thus it has extensive market to apply in fields such as home textile, clothes, health cares.
Traditional polyvinyl alcohol based water-soluble interlaced fabric be using water-soluble staple fiber as raw material, by ball woll, combing, at
It is prepared by the techniques such as net, hot rolling.It is long, of high cost with technological process, the problems such as product strength is relatively low.With polyester, polypropylene etc.
Directly at the universal of cloth technology, polyvinyl alcohol also becomes research hotspot.But since the molecular structure of polyvinyl alcohol polyhydroxy causes
Its intermolecular interaction enhances, and fusing point is higher, can not be molded with melt-spinning method, directly meets difficulty at the development of cloth technology.
Invention content
To solve the above problems, the present invention overcomes polyvinyl alcohol melt-spun directly into the bottle of cloth by combining plasticising technology
Neck successfully obtains the water-soluble non-woven cloth of polyvinyl alcohol.The technology successfully effectively prevents the dirt of traditional PVA staple fibers production process
Dye problem substantially reduces technological process, reduces production cost, is a kind of very promising water-soluble non-woven cloth of polyvinyl alcohol
Manufacturing technology.
Low cost, the manufacturing method of free of contamination water-soluble non-woven cloth are produced the purpose of the present invention is to provide a kind of.This
The purpose of invention adopts the following technical scheme that realize, a kind of preparation side of the water-soluble non-woven cloth based on polyvinyl alcohol
Method includes the following steps：
Polyvinyl alcohol (PVA) with different molecular weight and/or different alcoholysis degrees is blended S1, washes and centrifuges de-
Water；
S2 carries out polyvinyl alcohol obtained by step S1 at plasticising with polyethylene glycol oxide, PVA-g-PEG, caprolactam water solution
Reason；
S3 batches the product that S2 is handled after melt spinning is molded through drawing-off, networking, hot rolling and cutting edge, obtains based on poly-
The water-soluble non-woven cloth of vinyl alcohol.
Preferably, the mass mixing ratio of polyvinyl alcohol is (100 in step S1：0)~(0：100).Here it is mixed
Polyvinyl alcohol can be the polyvinyl alcohol of different molecular weight or the polyvinyl alcohol of different alcoholysis degrees, can also be molecular weight and alcoholysis
The different polyvinyl alcohol of degree is mixed by certain mass ratio.Preferably, the polyvinyl alcohol after washing in step S1 contains
Water rate is 45-65%.
Preferably, the preparation method of the PVA-g-PEG described in step S2 is as follows：With vinylacetate (VAc) and allyl
Base polyethylene glycol (APEG) is raw material, is obtained using polyvinyl acetate as main chain by free radical polymerization, polyethylene glycol is branch
Graft copolymer (PVAc-g-PEG), PVAc-g-PEG is subjected to alcoholysis, so that vinyl acetate-based is changed into hydroxyl, is gathered
Vinyl alcohol is main chain, and polyethylene glycol is the graft copolymer PVA-g-PEG of branch.
It is further preferred that the radical polymerization in the PVAc-g-PEG preparation process is combined into macromonomer radical polymerization
It closes, macromonomer is the allyl polyglycol that molecular weight is 1200-4000, and reaction medium is the methanol-water of concentration 80wt%
Solution, catalyst are ammonium persulfate, and the molar ratio of vinylacetate and allyl polyglycol is 20：1-30：1, reaction temperature
It is 65-80 DEG C, reaction time 3-6h.
It is further preferred that the alcoholysis agent of the PVAc-g-PEG alcoholysis reactions is methanol, catalyst is sodium hydroxide；
The mass ratio of PVAc-g-PEG, methanol and sodium hydroxide are (25-30)：(68-74)：(1-2), glycolysis temperature are 40-50 DEG C, when
Between be 30-50min.
Preferably, plasticising described in step S2, which is handled, is specially：By after centrifugal dehydration polyvinyl alcohol and polyethylene glycol oxide,
Plasticising tank is added in PVA-g-PEG and caprolactam water solution, and closing plasticising processing is taken out for 1-3 hours；The rate of charge being plasticized in tank
Example is polyvinyl alcohol：Polyethylene glycol oxide：PVA-g-PEG：Caprolactam water solution=(85-92)：(5-10)：(1-2)：(2-3),
Closing plasticising treatment temperature is 30-60 DEG C, caprolactam water solution a concentration of 30%.
Preferably, step S3 is specially：The product of S2 processing is added and spins front hopper, screw extruder is sent into, through screw rod
It is sent into spinning manifold after plastifying fusion, enters filament spinning component through metering pump, is sprayed from hollow spinneret plate, into modular cabinet,
Through hot-rolling and slit type combination drawing-off after molding, into lapping machine networking, carries out hot rolling after networking and cutting edge is batched, be based on
The water-soluble non-woven cloth of polyvinyl alcohol.
Preferably, the modular cabinet is made of four modules, and each module is arranged different heating powers, formed by
High to Low to arrive high temperature gradient field again, temperature range is 40-200 DEG C.
It is an advantage of the invention that：
(1) main chain of graft copolymer PVA-g-PEG has good compatibility, branch PEG and plasticising with main material PVA
Agent polyethylene glycol oxide has good compatibility and plasticizer caprolactam that can also realize chemical increase-volume on the spot, therefore with PVA-
G-PEG, which is bulking agent, can well solve the consistency problem of PVA and plasticizer, it can be ensured that the spinnability of melt and good
Mechanical property.
It is (2) proposed by the present invention that by the polyvinyl alcohol of polyvinyl alcohol different molecular weight and different alcoholysis degrees be blended can be with
The solution temperature for adjusting polyvinyl alcohol in a wide range, ensures the machinability of raw material.
(3) present invention proposes water, polyethylene glycol oxide, the compound plasticising technology of caprolactam water solution, can reduce polyethylene
Alcohol intramolecular and intermolecular hydrogen bonding reduce the fusing point of PVA, ensure it with preferable mobility, while effectively reducing product
Solution temperature.
(4) present invention is molded using hollow spinneret plate, is increased specific surface area of the fiber in hot wind, is accelerated plasticizer
The volatilization of moisture, improves equipment yield.
(5) modular cabinet designs, and has and cabinet temperature is facilitated to control, it is ensured that the good not simultaneously silk of strand molding, and have good
Plasticity, facilitate post-tensioning, it is ensured that the raising of strand and finished fiber quality.
(6) present invention helps to improve product strength using hot-rolling and slit type combination drawing-off technology.
The present invention cooperates with plasticised polyvinyl alcohol using water and polyethylene glycol oxide, and by plasticized melt spinning, online drawing-off,
Direct networking prepares the water-soluble non-woven cloth of polyvinyl alcohol.Preparation method of the present invention is simple, pollution-free, the at low cost, scope of application
Extensively, application value is high.The non-woven cloth is embroidered in clothes and the i.e. fields such as abandoning property medical health care products have wide market to apply
Foreground.
Specific implementation mode
Following non-limiting embodiments can make those skilled in the art be more fully understood the present invention, but not with
Any mode limits the present invention.In following embodiments unless otherwise specified, used experimental method is conventional method, used
Material, reagent etc. can chemically company be bought.It is respectively 1799 and 1788 polyvinyl alcohol that specification is used in the present embodiment,
PVA-1788 indicate the degree of polymerization be 1700, alcoholysis degree 88%, PVA-1799 then indicates that the degree of polymerization is 1700, alcoholysis degree is
99%.
Embodiment 1
It is 80 that quality proportioning, which is added, in the allyl polyglycol (APEG) that 1 part of molecular weight is 1200：20 water and methanol
Mixed solution, be warming up to 65 DEG C, after stirring evenly and after APEG is dissolved as uniform solution, catalyst ammonium persulfate be added, together
When solution is added with the speed of 1 part/min in 20 parts of vinylacetates (VAc), react 3 hours, obtained with poly-vinegar acid second in 65 DEG C
Enester is main chain, and polyethylene glycol is the graft copolymer (PVAc-g-PEG) of branch.PVAc-g-PEG is subjected to alcoholysis with methanol,
Vinyl acetate-based is set to be changed into hydroxyl, it is main chain to obtain polyvinyl alcohol, and polyethylene glycol is the graft copolymer PVA-g- of branch
PEG.25 parts of PVA-g-PEG are added in 50 parts of methanol, solution is made, starts that hydroxide is added dropwise into solution after being warming up to 40 DEG C
25 parts of sodium methanol solution (wherein 24 parts of methanol, 1.0 parts of sodium hydroxides) react 30 minutes, reaction terminate filtered, washing and
It is dry, obtain polyvinyl alcohol graft copolymerized ethylene glycol copolymer I (PVA-g-PEGI).
Embodiment 2
It is 80 that quality proportioning, which is added, in the APEG that 1 part of molecular weight is 2400：20 water and the mixed solution of methanol, are warming up to
70 DEG C, after stirring evenly and after APEG is dissolved as uniform solution, catalyst is added, while by 30 parts of VAc with the speed of 1 part/min
Solution is added, is reacted 4.5 hours in 70 DEG C, obtains PVAc-g-PEG.It is molten by being made in 30 parts of PVA-g-PEG 45 parts of methanol of addition
Liquid starts that 25 parts of sodium hydrate methanol solution (wherein 23 parts of methanol, 2.0 parts of hydroxides are added dropwise into solution after being warming up to 50 DEG C
Sodium) it reacts 50 minutes, reaction terminates to be filtered, and washs and dries, obtains polyvinyl alcohol graft copolymerized ethylene glycol copolymer II
(PVA-g-PEGⅡ)。
Embodiment 3
It is 80 that quality proportioning, which is added, in the APEG that 1 part of molecular weight is 4000：20 water and the mixed solution of methanol, are warming up to
80 DEG C, after stirring evenly and after APEG is dissolved as uniform solution, catalyst is added, while by 25 parts of VAc with the speed of 1 part/min
Solution is added, is reacted 6 hours in 80 DEG C, obtains PVAc-g-PEG.It is molten by being made in 25 parts of PVA-g-PEG 50 parts of methanol of addition
Liquid starts that 25 parts of sodium hydrate methanol solution (wherein 24 parts of methanol, 1.0 parts of hydroxides are added dropwise into solution after being warming up to 45 DEG C
Sodium) it reacts 45 minutes, reaction terminates to be filtered, and washs and dries, obtains polyvinyl alcohol graft copolymerized ethylene glycol copolymer III
(PVA-g-PEGⅢ)。
Embodiment 4
The polyvinyl alcohol that specification is 1799 and 1788 is pressed 100：0 ratio mixing, squeezing acquisition moisture content is after washing
65% polyvinyl alcohol, 85 parts, 10 parts polyethylene glycol oxides of polyvinyl alcohol, 2 parts of PVA-g-PEG I, 3 parts of caprolactams after washing
Aqueous solution input closing plasticising tank, is handled 3 hours in 60 DEG C of plasticising.It is added after taking-up and spins front hopper, be sent into screw extruder, warp
Spiro rod plasticizing melting after be sent into spinning manifold, enter filament spinning component through metering pump, from hollow spinneret plate spray, into 50 DEG C, 150
DEG C, 200 DEG C, 120 DEG C of modular cabinets, through hot-rolling and slit type combination drawing-off after molding, into lapping machine networking, networking is laggard
Row hot rolling and cutting edge are batched, and the water-soluble non-woven cloth product based on polyvinyl alcohol, water-soluble non-woven cloth product solution temperature are obtained
It is 95 DEG C.
Embodiment 5
The polyvinyl alcohol that specification is 1799 and 1788 is pressed 80：20 ratio mixing, squeezing acquisition moisture content is after washing
55% polyvinyl alcohol, 92 parts, 5 parts polyethylene glycol oxides of polyvinyl alcohol, 1 part of PVA-g-PEG, II, 2 part of caprolactam after washing
Aqueous solution input closing plasticising tank, is handled 2 hours in 40 DEG C of plasticising.It is added after taking-up and spins front hopper, be sent into screw extruder, warp
Spiro rod plasticizing melting after be sent into spinning manifold, enter filament spinning component through metering pump, from hollow spinneret plate spray, into 45 DEG C, 120
DEG C, 170,100 DEG C of modular cabinets, into lapping machine networking, carry out through hot-rolling and slit type combination drawing-off after molding after networking
Hot rolling and cutting edge are batched, and the water-soluble non-woven cloth product based on polyvinyl alcohol is obtained, and water-soluble non-woven cloth product solution temperature is
80℃。
Embodiment 6
The polyvinyl alcohol that specification is 1799 and 1788 is pressed 50：50 ratio mixing, squeezing acquisition moisture content is after washing
50% polyvinyl alcohol, 90 parts, 6 parts polyethylene glycol oxides of polyvinyl alcohol, 2 parts of PVA-g-PEG, III, 2 part of caprolactam after washing
Aqueous solution input closing plasticising tank, is handled 1 hour in 35 DEG C of plasticising.It is added after taking-up and spins front hopper, be sent into screw extruder, warp
Spiro rod plasticizing melting after be sent into spinning manifold, enter filament spinning component through metering pump, from hollow spinneret plate spray, into 45 DEG C, 100
DEG C, 150,100 DEG C of modular cabinets, into lapping machine networking, carry out through hot-rolling and slit type combination drawing-off after molding after networking
Hot rolling and cutting edge are batched, and the water-soluble non-woven cloth product based on polyvinyl alcohol is obtained, and water-soluble non-woven cloth product solution temperature is
70℃。
Embodiment 7
The polyvinyl alcohol that specification is 1799 and 1788 is pressed 0：100 ratio mixing, squeezing acquisition moisture content is after washing
45% polyvinyl alcohol, 92 parts, 6 parts polyethylene glycol oxides of polyvinyl alcohol, 1 part of PVA-g-PEG, II, 1 part of caprolactam after washing
Aqueous solution input closing plasticising tank, is handled 1 hour in 30 DEG C of plasticising.It is added after taking-up and spins front hopper, be sent into screw extruder, warp
Spiro rod plasticizing melting after be sent into spinning manifold, enter filament spinning component through metering pump, from hollow spinneret plate spray, into 40 DEG C, 90
DEG C, 130,100 DEG C of modular cabinets, into lapping machine networking, carry out through hot-rolling and slit type combination drawing-off after molding after networking
Hot rolling and cutting edge are batched, and the water-soluble non-woven cloth product based on polyvinyl alcohol is obtained, and water-soluble non-woven cloth product solution temperature is
60℃。
Claims (9)
1. a kind of preparation method of the water-soluble non-woven cloth based on polyvinyl alcohol, which is characterized in that include the following steps：
Polyvinyl alcohol with different molecular weight and/or different alcoholysis degrees is blended S1, washes simultaneously centrifugal dehydration；
Polyvinyl alcohol obtained by step S1 is carried out plasticising processing by S2 with polyethylene glycol oxide, PVA-g-PEG, caprolactam water solution；
The preparation method of PVA-g-PEG described in step S2 is as follows：Using vinylacetate and allyl polyglycol as raw material, pass through
Free radical polymerization obtains PVAc-g-PEG, and PVAc-g-PEG is carried out alcoholysis, so that vinyl acetate-based is changed into hydroxyl, obtains
PVA-g-PEG；
S3 batches the product that S2 is handled after melt spinning is molded through drawing-off, networking, hot rolling and cutting edge, obtains being based on polyethylene
The water-soluble non-woven cloth of alcohol.
2. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
The mass mixing ratio of polyvinyl alcohol is (100 in step S1：0)~(0：100).
3. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
The moisture content of polyvinyl alcohol after being washed in step S1 is 45-65%.
4. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
Radical polymerization in the PVAc-g-PEG preparation process is combined into macromonomer free radical polymerization, and macromonomer is molecular weight
For the allyl polyglycol of 1200-4000, reaction medium is the methanol aqueous solution of concentration 80wt%, and catalyst is persulfuric acid
The molar ratio of ammonium, vinylacetate and allyl polyglycol is 20：1-30：1, reaction temperature is 65-80 DEG C, and the reaction time is
3-6h。
5. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
The alcoholysis agent of the PVAc-g-PEG alcoholysis reactions is methanol, and catalyst is sodium hydroxide；PVAc-g-PEG, methanol and hydroxide
The mass ratio of sodium is (25-30)：(68-74)：(1-2), glycolysis temperature are 40-50 DEG C, time 30-50min.
6. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
Plasticising described in step S2 is handled：By after centrifugal dehydration polyvinyl alcohol and polyethylene glycol oxide, PVA-g-PEG and oneself in
Plasticising tank is added in amide aqueous solution, and closing plasticising processing is taken out for 1-3 hours；The ingredient proportion being plasticized in tank is polyvinyl alcohol：It is poly-
Ethylene oxide：PVA-g-PEG：Caprolactam water solution=(85-92)：(5-10)：(1-2)：(2-3), closing plasticising processing temperature
Degree is 30-60 DEG C.
7. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
A concentration of 30wt% of caprolactam water solution.
8. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 1, which is characterized in that
Step S3 is specially：The product of S2 processing is added and spins front hopper, is sent into screw extruder, is sent into and spins after spiro rod plasticizing melts
Silk babinet, enters filament spinning component through metering pump, is sprayed from hollow spinneret plate, into modular cabinet, through hot-rolling and narrow after molding
Seam combines drawing-off, into lapping machine networking, carries out hot rolling after networking and cutting edge is batched, obtain water-soluble non-based on polyvinyl alcohol
Woven cloths.
9. a kind of preparation method of water-soluble non-woven cloth based on polyvinyl alcohol according to claim 8, which is characterized in that
The modular cabinet is made of four modules, and different heating powers is arranged in each module, and formation is arrived high again from high to low
Temperature gradient field, temperature range are 40-200 DEG C.
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| CN201610586155.7A CN106012293B (en) | 2016-07-23 | 2016-07-23 | A kind of preparation method of the water-soluble non-woven cloth based on polyvinyl alcohol |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022229399A1 (en) * | 2021-04-30 | 2022-11-03 | Porcher Industries | Recyclable textile mesh and paper composite incorporating same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106894109B (en) * | 2017-04-11 | 2019-05-31 | 大连天马可溶制品有限公司 | Low temperature water soluble polyvinyl alcohol filament yarn and preparation method thereof |
| CN106948090B (en) * | 2017-04-11 | 2019-05-07 | 大连天马可溶制品有限公司 | A kind of preparation method and process equipment of low temperature water-soluble polyvinyl alcohol non-woven cloth |
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| JP3537601B2 (en) * | 1996-08-05 | 2004-06-14 | 株式会社クラレ | Non-woven |
| JP4754060B2 (en) * | 2000-11-20 | 2011-08-24 | 株式会社クラレ | Thermoplastic polyvinyl alcohol composition having heat resistance, and fiber containing the composition |
| AU2007240124B2 (en) * | 2006-04-18 | 2014-09-18 | Plantic Technologies Limited | Polymeric films |
| CN101240086B (en) * | 2008-03-14 | 2011-08-17 | 上海悦仕生物材料有限公司 | Total-biodegradation plastic film and preparation method thereof |
| CN103409837B (en) * | 2013-08-02 | 2015-10-28 | 东华大学 | The method of water-soluble polyvinyl alcohol fibers prepared by a kind of melt spinning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022229399A1 (en) * | 2021-04-30 | 2022-11-03 | Porcher Industries | Recyclable textile mesh and paper composite incorporating same |
| FR3122439A1 (en) * | 2021-04-30 | 2022-11-04 | Porcher Industries | Recyclable textile grid and papermaker composite incorporating it |
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