CN103554801A - Modified polyvinyl alcohol sponge and preparation method thereof - Google Patents
Modified polyvinyl alcohol sponge and preparation method thereof Download PDFInfo
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- CN103554801A CN103554801A CN201310380181.0A CN201310380181A CN103554801A CN 103554801 A CN103554801 A CN 103554801A CN 201310380181 A CN201310380181 A CN 201310380181A CN 103554801 A CN103554801 A CN 103554801A
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- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 100
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 100
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000000243 solution Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims abstract description 20
- 229920002472 Starch Polymers 0.000 claims abstract description 14
- 239000008107 starch Substances 0.000 claims abstract description 14
- 235000019698 starch Nutrition 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000004312 hexamethylene tetramine Substances 0.000 claims abstract description 10
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- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 87
- 238000002156 mixing Methods 0.000 claims description 18
- 229920002554 vinyl polymer Polymers 0.000 claims description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 238000010792 warming Methods 0.000 claims description 11
- 239000003377 acid catalyst Substances 0.000 claims description 8
- 241000497192 Phyllocoptruta oleivora Species 0.000 claims description 5
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 3
- 230000001815 facial effect Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 210000002966 serum Anatomy 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000006136 alcoholysis reaction Methods 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
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- 238000009736 wetting Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000002439 hemostatic effect Effects 0.000 abstract 1
- 229960004011 methenamine Drugs 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 16
- 238000001914 filtration Methods 0.000 description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000008098 formaldehyde solution Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
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- 239000000463 material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 108010022355 Fibroins Proteins 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010012434 Dermatitis allergic Diseases 0.000 description 1
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 1
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- 206010000269 abscess Diseases 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000006359 acetalization reaction Methods 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000005227 alkyl sulfonate group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 201000008937 atopic dermatitis Diseases 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- -1 imines ion Chemical class 0.000 description 1
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- 235000010755 mineral Nutrition 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 210000002706 plastid Anatomy 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
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- 238000006068 polycondensation reaction Methods 0.000 description 1
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- 231100000475 skin irritation Toxicity 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a modified polyvinyl alcohol (PVA) sponge and a preparation method thereof. The preparation method of the sponge comprises the following steps: adding 80-150 parts by weight of PVA into 600-1800 parts by weight of water, stirring, heating to 60-98DEG C to form a stable solution, and adding 20-200 parts by weight of starch and 10-100 parts by weight of hexamethylene tetramine into the stable solution to form a mixed solution; and adding 10-400 parts by weight of sulfuric acid or hydrochloric acid into the mixed solution, uniformly stirring while heating to realize a temperature increase of 50-85DEG C for solidifying for 8-20h, cooling, demolding, and cleaning to obtain the polyvinyl alcohol sponge. The preparation method solves the problems of smell generation caused by the use of formaldehyde in each link, inconvenient worker operation, low production efficiency and the like in the production technologies of a PVA sponge dressing, a PVA hemostatic sponge, a PVA mop head, a PVA chamois-like towel, a PVA carwash cotton block, a PVA water absorption sponge, a PVA collodion head, a PVA suction roller and the like, improves the wetting rate of the product and increases the softness of the product in a dry state.
Description
Technical field
The present invention relates to sponge technical field, relate in particular to a kind of modified polyvinyl alcohol sponge and preparation method thereof.
Background technology
Polyvinyl formal series products is widely used at home.Particularly, in industries such as clean, filtration, medical treatment, this has obtained significant progress for several years.In clean daily industry, as products such as PVA mophead (market is called god and drags), imitation buckskin towel, PVA facial washing puff, quick water-absorbing sponges, progressively entering into huge numbers of families.Filtering industry, PVA filter cotton, oil product screen plate, water treatment sponge, PVA porous particle etc. are also progressively being applied.Particularly, at medical instruments field, after the high-end casting product such as PVA embolism agent of granule, expanded tampon sponge, negative pressure drainage sponge dressing are introduced to the market, its effect obtains affirming of patient and hospital.Yet in disclosed document patent, most enterprises is all directly to using formaldehyde solution or paraformaldehyde as linking agent, manufacture polyvinyl formal product.
Formaldehyde is irritant gas colourless, that have overpowering odor, its aqueous solution of 35%～40% common name formalin.When manufacture polyvinyl formal product, because many enterprises are directly used formaldehyde solution, and formaldehyde solution some formaldehyde of when evaporation is overflowed, and its steam energy intense stimulus mucous membrane, has carinogenicity, belongs to high poisonous substance.Formaldehyde energy and protein bound, suck after high-concentration formaldehyde, there will be the serious stimulation of respiratory tract and oedema, eye shouting pain, headache, also bronchial asthma can occur.The direct Formaldehyde Exposed of skin, can cause dermatitis, color spot, necrosis.Often suck a small amount of formaldehyde, can cause chronic poisoning, occur mucous hyperemia, skin irritation disease, allergic dermatitis angling and fragility, nail matrix finger tip pain.Therefore, this invention, when producing polyvinyl formal product, is introduced hexamethylenetetramine as linking agent, the harm such as the suction causing in the time of can effectively avoiding using formaldehyde in workman's production process, contact, absorption.
Application number is the preparation method of " 201110022598.0 " disclosed polyvinyl formal PVF microfiltration membrane, that PVAC polyvinylalcohol is dissolved in the water, add secondary alkyl sulfonate, add after acid catalysis, heat to 50 ℃～60 ℃, add again formaldehyde to stir, the porous plastid mixture of the foaming of system.Under 50 ℃～60 ℃ conditions, add formaldehyde, will cause formaldehyde acutely to volatilize, fill the air whole operating environment.
Application number is that a kind of medical sanitary in " 94102999.9 " is used in sponge material, usings equally formaldehyde as linking agent, is equipped with oxalic dialdehyde as properties-correcting agent.Application number is in the medical antibacterial sponge dressing of " 201010516376.X " and preparation method thereof, by PVAC polyvinylalcohol, and nanometer silver, formaldehyde, acid, silk fibroin, whipping agent is polycondensation in the aqueous solution.Its step is mixed with deionized water for first getting a certain amount of PVA, whipping agent, silk fibroin, mechanical stirring.Publication number CN101363021 first mixes Wingdale (calcium carbonate) powder with polyvinyl alcohol solution, adds after dilute hydrochloric acid limestone powder and acid-respons and produces carbonic acid gas and form abscess and take formaldehyde again and obtain porous foam product as linking agent.The patent No. after to be " 200910060414 " dissolve sodium alginate and polyvinyl alcohol in water, adds mineral acid, formaldehyde and sodium bicarbonate as whipping agent blending and stirring.At higher temperature, to adding the system of formaldehyde to stir foaming, then foams are poured in mould, formaldehyde volatilization is very severe, is difficult to the health problem of effective guarantee workman in operating process.
Other method and at present domestic polyvinylalcohol sponge manufacturer mostly adopt formaldehyde directly to add as main linking agent.If publication number is in the polyvinyl formal foam preparation processes of " CN101508747 " and " CN101508814 ", all directly to use formaldehyde solution.Other though introduce other aldehydes, for obtaining the good product of water absorbing properties, all take formaldehyde as main linking agent composition for the technology of industrial filter net and clean civilian sponge.
Domestic relating to, is used in PVA sponge that to filter industry report very rare, only having patent publication No. is in CN1289629, the preparation technology of its polyvinylalcohol sponge molecular filtration plate has adopted formaldehyde to produce polyvinyl formal sponge as linking agent too, and such pore sponge is because its water suction oil absorptiveness is good and aperture is applied to filtering industry compared with little.
Application number is in " 200910223221.4 " disclosed a kind of novel filtering material and preparation method thereof, the soft sponge of polyvinyl formal that the degree of acetalization of take is lower is matrix, select again formaldehyde, sulfuric acid based and water furnishing mixed liquid dipping, be heated to the temperature of 40-100 ℃, keep manufacturing for 2-20 hour forming.In please number be in the document of " 200910040822.1 ", directly formaldehyde solution is added in the mixed solution of polyvinyl alcohol, acid and starch equally, and with temperature reaction after its immersion spraying-bonded wadding, obtain polyvinyl formal filling/coated cotton fiber product.These class methods are in operating process, and workman is soaked into material matrix in formaldehyde mixed solution, and because formaldehyde volatile quantity is large, workman's operation is very difficult.
Summary of the invention
For overcome formaldehyde volatilization, Odor stimulation, formaldehyde crystallization, the transportation of producing polyvinyl formal series products and running into when directly using formaldehyde as linking agent, store the problems such as inconvenience, workman's severe operational environment.The invention provides a kind of production technique that has no irritating odor and produce the polyvinylalcohol sponge that performance is different.This polyvinylalcohol sponge is used hexamethylenetetramine (being commonly called as urotropine) as linking agent, under acidic conditions, urotropine is protonated, fracture produces imines ion and produces free aldehyde radical, they with polyvinyl alcohol on hydroxyl interact, be accompanied by the carrying out of aldolization, acid is further consumed, and the reduction of acid concentration is conducive to later stage aldolization forward and moves.Therefore using hexamethylenetetramine as linking agent, prepare all kinds of polyvinyl acetal products, can effectively avoid all kinds of smell drawbacks of using formaldehyde to produce at operation link.As linking agent comparison, the difference of the modification sponge product the present invention relates to is with direct use formaldehyde, under equal conditions: modified product wetting rate is faster; Modified product is more soft under drying regime; Modified product water absorbent rate is higher; Modified product is formaldehydeless smell in process of production.
Object of the present invention realizes by following technical scheme:
A sponge, comprises hexamethylenetetramine, polyvinyl alcohol, starch and acid catalyst; Described hexamethylenetetramine is that 10～100 weight parts, polyvinyl alcohol are that 80～150 weight parts, water are that 600～1800 weight parts, starch are that 20～200 weight parts, acid catalyst are 10～400 weight parts.
The preparation method of modified polyvinyl alcohol sponge comprises:
The preparation method in modified polyvinyl alcohol sea, is characterized in that, described method comprises:
The polyvinyl alcohol of 80～150 weight parts is joined in the water of 600～1800 weight parts and stir, and be warming up to 60 ℃～98 ℃, form stabilizing solution;
In stabilizing solution, add 20～200 weight part starch and 10～100 weight part hexamethylenetetramines, form mixing solutions;
The sulfuric acid or the hydrochloric acid that in mixing solutions, add 10～400 weight parts, stirring heats up 60～85 ℃ is cured 8～20 hours, and cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
Or
The polyvinyl alcohol of 80～150 weight parts, 10～100 weight part hexamethylenetetramines are joined in the water of 600～1800 weight parts and stir, and be warming up to 60 ℃～98 ℃, form mixing solutions;
The sulfuric acid or the hydrochloric acid that in mixed serum, add 10～400 weight parts, injection molding after stirring, heats up 60～85 ℃ and is cured 8～20 hours, and cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
Compared with prior art, one or more embodiment of the present invention can have the following advantages by tool:
Be widely used in the polyvinyl formal series products such as the cotton piece of PVA sponge dressing, PVA styptic sponge, PVA mophead, PVA imitation buckskin towel, PVA carwash, PVA water-absorbing sponge, PVA collodion head, screen plate, relate to the industries such as clean, filtration, electronics, medical treatment, water treatment.
Solve in PVA sponge dressing, PVA styptic sponge, PVA mophead, PVA imitation buckskin towel, the cotton piece of PVA carwash, PVA water-absorbing sponge, the first-class product processes of PVA collodion links and operate inconvenience, the low inferior problem of production efficiency because of smell, the workman who uses formaldehyde to produce.
Improve quality product, improve product dry state wetting rate, product is softer under drying regime.Overcome with hard under the product drying state of Formaldehyde Production, water suction and soak the shortcomings such as extremely slow.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification sheets, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification sheets, claims.
embodiment
For easy understanding, according to technical scheme of the present invention, do not changing under connotation of the present invention, one of ordinary skill in the art can propose a plurality of frame mode of the present invention and making method.Therefore following embodiment and be only illustrating of technical scheme of the present invention, and should not be considered as of the present invention all or be considered as restriction or the restriction of technical solution of the present invention.
Below in conjunction with embodiment, the present invention is described in further detail.
The present embodiment provides a kind of modified polyvinyl alcohol sponge, comprises hexamethylenetetramine, polyvinyl alcohol, starch and acid catalyst; Described hexamethylenetetramine is that 10～100 weight parts, polyvinyl alcohol are that 80～150 weight parts, water are that 600～1800 weight parts, starch are that 20～200 weight parts, acid catalyst are 10～400 weight parts.
Above-mentioned acid catalyst is sulfuric acid or hydrochloric acid.
The present embodiment also provides the preparation method of a kind of modified polyvinyl alcohol sponge, and its concrete preparation process is referring to following examples:
Embodiment 1
The polyvinyl alcohol of 80 weight parts is joined in the water of 600 weight parts and stir, and be warming up to 90 ℃, form stabilizing solution;
In stabilizing solution, add 20 weight part starch, 60 weight part water coolants and 10 weight part hexamethylenetetramines, cooling formation mixing solutions;
In cooled mixing solutions, add the sulfuric acid of 10 weight parts, stirring heats up 60 ℃ is cured 2 hours, then is warming up to 85 ℃ and is cured reaction 8 hours, then cooling, the demoulding clean and obtain polyvinylalcohol sponge.
Embodiment 2
The polyvinyl alcohol of 80 weight parts, 25 weight part hexamethylenetetramines are joined in the water of 600 weight parts and stir, and be warming up to 95 ℃, form mixing solutions;
The sulfuric acid that adds 75 weight parts in mixed serum, injection molding after stirring, heats up 60 ℃ and is cured 16 hours, and cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
Embodiment 3
The polyvinyl alcohol of 100 weight parts, 50 weight part hexamethylenetetramines are joined in the water of 800 weight parts and stir, and be warming up to 94 ℃, form stabilizing solution;
In stabilizing solution, add 70 weight part starch, form mixing solutions;
The sulfuric acid that adds 100 weight parts in mixing solutions, stirs and pours in mould, heats up 70 ℃ and is cured 10 hours, and cooling, the demoulding is also cleaned and obtained polyvinylalcohol sponge.
Buy and execute example 4
The polyvinyl alcohol of 120 weight parts is joined in the water of 900 weight parts and stir, and be warming up to 96 ℃, form stabilizing solution;
In stabilizing solution, add 80 weight part starch and 80 weight part hexamethylenetetramines, form mixing solutions;
The hydrochloric acid that adds 150 weight parts in mixing solutions, stirs and pours in mould, heats up 80 ℃ and is cured 18 hours, and cooling, the demoulding is also cleaned and obtained polyvinylalcohol sponge.
Embodiment 5
The polyvinyl alcohol of 150 weight parts, 90 weight part hexamethylenetetramines join in the water of 1800 weight parts and stir, and are warming up to 98 ℃, form stabilizing solution;
In stabilizing solution, add 150 weight parts waters, form mixing solutions;
The hydrochloric acid that adds 200 weight parts in mixing solutions, stirs and pours in mould, heats up 85 ℃ and is cured 20 hours, and cooling, the demoulding is also cleaned and obtained polyvinylalcohol sponge.
Embodiment 6
The polyvinyl alcohol of 150 weight parts joins in the water of 1800 weight parts and stirs, and is warming up to 98 ℃, forms stabilizing solution;
In stabilizing solution, add 200 weight part starch and 100 weight part hexamethylenetetramines, cooling formation mixing solutions;
In cooled mixing solutions, add the hydrochloric acid of 400 weight parts, stir and pour in mould, heat up 85 ℃ and be cured 20 hours, cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
Polyvinylalcohol sponge prepared by above-described embodiment is applicable to PVA mophead, PVA imitation buckskin towel, PVA facial washing puff, the cotton piece of Xian's PVA car, the cotton towel of PVA, PVA water-absorbing sponge, polyvinyl formal screen plate, PVA styptic sponge, PVA negative pressure drainage sponge, vinyl-formal resin, polyvinyl formal fibre, formaldehyde polyvinyl acetal.
Although the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technician in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (5)
1. a modified polyvinyl alcohol sponge, is characterized in that, comprises hexamethylenetetramine, polyvinyl alcohol, starch and acid catalyst; Described hexamethylenetetramine is that 10～100 weight parts, polyvinyl alcohol are that 80～150 weight parts, water are that 600～1800 weight parts, starch are that 20～200 weight parts, acid catalyst are 10～400 weight parts.
2. modified polyvinyl alcohol sponge according to claim 1, is characterized in that, described acid catalyst is sulfuric acid or hydrochloric acid; The described polyvinyl alcohol polymerization degree is 300-2600, alcoholysis degree 80%～99.9%.
3. the preparation method in modified polyvinyl alcohol according to claim 1 sea, is characterized in that, described method comprises:
The polyvinyl alcohol of 80～150 weight parts is joined in the water of 600～1800 weight parts and stir, and be warming up to 60 ℃～98 ℃, form stabilizing solution;
In stabilizing solution, add 20～200 weight part starch and 10～100 weight part hexamethylenetetramines, form mixing solutions;
The sulfuric acid or the hydrochloric acid that in mixing solutions, add 10～400 weight parts, stirring heats up 60～85 ℃ is cured 8～20 hours, and cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
4. polyvinylalcohol sponge processing method according to claim 1, is characterized in that, described method comprises:
The polyvinyl alcohol of 80～150 weight parts, 10～100 weight part hexamethylenetetramines are joined in the water of 600～1800 weight parts and stir, and be warming up to 60 ℃～98 ℃, form mixing solutions;
The sulfuric acid or the hydrochloric acid that in mixed serum, add 10～400 weight parts, injection molding after stirring, heats up 60～85 ℃ and is cured 8～20 hours, and cooling, the demoulding is also cleaned and is obtained polyvinylalcohol sponge.
5. according to the preparation method of the modified polyvinyl alcohol sponge described in claim, it is characterized in that, described polyvinylalcohol sponge is applicable to PVA mophead, PVA imitation buckskin towel, PVA facial washing puff, the cotton piece of PVA carwash, the cotton towel of PVA, PVA water-absorbing sponge, polyvinyl formal screen plate, PVA styptic sponge, PVA negative pressure drainage sponge, vinyl-formal resin, polyvinyl formal fibre, formaldehyde polyvinyl acetal etc.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105343927A (en) * | 2015-11-02 | 2016-02-24 | 北京大清生物技术有限公司 | Composition for treating dry socket and preparation method of composition |
| CN106916333A (en) * | 2015-12-28 | 2017-07-04 | 武汉德骼拜尔外科植入物有限公司 | A kind of polyvinyl alcohol medical sponge and preparation method thereof |
| CN107652464A (en) * | 2016-07-25 | 2018-02-02 | 克林纳奇（荆州）高分子科技有限公司 | A kind of polyvinyl formal sponge cloth and its preparation method and application |
| CN110898319A (en) * | 2019-12-19 | 2020-03-24 | 北京英佳麦迪克医用材料有限公司 | Cervical auxiliary dilator made of sponge material |
| CN111658298A (en) * | 2020-06-17 | 2020-09-15 | 广东泰宝医疗器械技术研究院有限公司 | Hydrogel cold compress patch |
| CN112625389A (en) * | 2020-12-16 | 2021-04-09 | 湖北魔洗高新材料制品有限公司 | Production process of mop head production line based on PVA collodion |
| CN113121937A (en) * | 2020-01-10 | 2021-07-16 | 宿迁嘉禾塑料金属制品有限公司 | Thermoplastic modified polyvinyl alcohol microporous foamed collodion and preparation process thereof |
| CN113980340A (en) * | 2021-11-26 | 2022-01-28 | 广州德棉科技有限公司 | Water-absorbing sponge suitable for plant growth and preparation method thereof |
| CN115536895A (en) * | 2022-08-25 | 2022-12-30 | 深圳市兴业卓辉实业有限公司 | Preparation method of antibacterial PVA sponge and sponge mop |
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| CN105343927B (en) * | 2015-11-02 | 2018-12-04 | 北京大清生物技术股份有限公司 | A kind of composition and preparation method thereof for treating alveolitis |
| CN105343927A (en) * | 2015-11-02 | 2016-02-24 | 北京大清生物技术有限公司 | Composition for treating dry socket and preparation method of composition |
| CN106916333A (en) * | 2015-12-28 | 2017-07-04 | 武汉德骼拜尔外科植入物有限公司 | A kind of polyvinyl alcohol medical sponge and preparation method thereof |
| CN106916333B (en) * | 2015-12-28 | 2019-05-07 | 武汉德骼拜尔外科植入物有限公司 | A kind of polyvinyl alcohol medical sponge and preparation method thereof |
| CN107652464A (en) * | 2016-07-25 | 2018-02-02 | 克林纳奇（荆州）高分子科技有限公司 | A kind of polyvinyl formal sponge cloth and its preparation method and application |
| CN110898319A (en) * | 2019-12-19 | 2020-03-24 | 北京英佳麦迪克医用材料有限公司 | Cervical auxiliary dilator made of sponge material |
| CN110898319B (en) * | 2019-12-19 | 2022-02-18 | 北京英佳麦迪克医用材料有限公司 | Cervical auxiliary dilator made of sponge material |
| CN113121937A (en) * | 2020-01-10 | 2021-07-16 | 宿迁嘉禾塑料金属制品有限公司 | Thermoplastic modified polyvinyl alcohol microporous foamed collodion and preparation process thereof |
| CN111658298A (en) * | 2020-06-17 | 2020-09-15 | 广东泰宝医疗器械技术研究院有限公司 | Hydrogel cold compress patch |
| CN112625389A (en) * | 2020-12-16 | 2021-04-09 | 湖北魔洗高新材料制品有限公司 | Production process of mop head production line based on PVA collodion |
| CN113980340A (en) * | 2021-11-26 | 2022-01-28 | 广州德棉科技有限公司 | Water-absorbing sponge suitable for plant growth and preparation method thereof |
| CN113980340B (en) * | 2021-11-26 | 2023-03-14 | 广州德棉科技有限公司 | Water-absorbing sponge suitable for plant growth and preparation method thereof |
| CN115536895A (en) * | 2022-08-25 | 2022-12-30 | 深圳市兴业卓辉实业有限公司 | Preparation method of antibacterial PVA sponge and sponge mop |
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Application publication date: 20140205 |