CN1043047C - Polyvinyl alcohol foam material for medical sanitation - Google Patents
Polyvinyl alcohol foam material for medical sanitation Download PDFInfo
- Publication number
- CN1043047C CN1043047C CN94102999A CN94102999A CN1043047C CN 1043047 C CN1043047 C CN 1043047C CN 94102999 A CN94102999 A CN 94102999A CN 94102999 A CN94102999 A CN 94102999A CN 1043047 C CN1043047 C CN 1043047C
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- polyvinyl alcohol
- foam material
- materials
- sodium bicarbonate
- medical
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Abstract
The present invention relates to polyvinyl alcohol foam materials for medical hygiene and a preparation method and purposes thereof. The polyvinyl alcohol foam materials are characterized in that glyoxal is added to raw materials, and sodium bicarbonate is adopted as a foaming agent; the raw materials are polymerized, foamed, cast, demoulded, washed, processed and formed. The materials of the present invention can be used as materials for sucking blood or liquid in surgical operations and can be used for surgically shaping and filling residual cavities or coloboma pits. The materials can be used as electrode pads on medical instruments, powder puffs for dressing and cosmetology and ink pads or water absorption sponges as office accommodations. The present invention has the advantages of stable product performance, extensive purposes and low cost.
Description
The present invention relates to polyvinyl alcohol foam material for medical sanitation and its production and use.
Polyvinyl alcohol foam material is white open-celled structure, matter is hard when doing, suction back quality softness has elasticity, be not subjected to Bacteria destroyed, the strong acid of ability below 30%, alkaline-resisting, can sterilize, the existing preparation method of this material is at acid catalyst with polyvinyl alcohol water solution, the method with formaldehyde condensation is descended in tensio-active agent and whipping agent effect, this method is difficult to the control degree of acetalization, thereby can not protect the just use properties of this kind material, the whipping agent that is adopted simultaneously is a diazonium diformazan sulfonic acid dipotassium, N-oxynitroso-beta-amino ketones, these whipping agents can not be used for the medical sanitary articles for use in product residue, can not guarantee that bubble overflows the back goods and do not subside and the uniformity coefficient of pore.
Purpose of the present invention just for the shortcoming that overcomes above-mentioned prior art with not enough, and provide polyvinyl alcohol foam material that a kind of medical sanitary uses and its production and use, thereby guarantee product performance, enlarged use range.
The object of the present invention is achieved like this:
Polyvinyl alcohol foam material will guarantee its use properties, in preparation process, must strictly control degree of acetalization, when degree of acetalization is low, product one drying promptly can seriously be shunk, cause size to stablize, thereby will make residual hydroxyl in the product reduce the water-absorbent that can not guarantee product and degree of acetalization is too high, absorptive key issue is that the hydrophilic hydroxyl groups group is arranged on molecular backbone chain, and when polyvinyl alcohol and formaldehyde reaction, because reaction is mainly carried out at intramolecularly, initial stage forms Polymer Structure and belongs to atactic molecule chain winding-type basically, adding an amount of oxalic dialdehyde mainly carries out intermolecular with the polyvinyl alcohol reaction, increased intermolecular interlinkage, the reactant molecule structure is solid netted type, and the hydroxyl that consumes same quantity forms the dimensional stability of intermolecular interlinkage point to product, thermotolerance substantially exceeds at the intramolecular reaction product, this foam material is selected, the mineral compound sodium bicarbonate avoided the disadvantage of existing pore forming material fully, and sodium bicarbonate is nontoxic as pore forming material; Increase whipping agent action time, can guarantee that again bubble overflows the back goods and do not subside, bubble is evenly distributed, and can adjust pore opening and density again.
Polyvinyl alcohol foam material for medical sanitation of the present invention, comprise that polyvinyl alcohol, formaldehyde are raw material, polyreaction foams with whipping agent again under the acid catalyst effect, through solidifying, demoulding washing, drying, the reprocessing moulding is characterized in that having increased oxalic dialdehyde and adopts sodium bicarbonate to make pore forming material in raw material, add an amount of dyestuff and can be made into the finished product of different colours.
Each material consumption (by weight) is: polyvinyl alcohol 8-12%, and formaldehyde 7-10%, oxalic dialdehyde 3-5%, hydrochloric acid 8-12%, sodium bicarbonate 2-5%, excess water 65-80%, dye dosage are 2-5%.
The preparation method of polyvinyl alcohol foam material for medical sanitation is characterized in that being made up of the following step:
A) polyvinyl alcohol is made into the aqueous solution and heats and add in the whisking machine, add again formaldehyde, hydrochloric acid, oxalic dialdehyde, dyestuff, stir polyreaction, when volume no longer rises, add the sodium bicarbonate whipping agent, continue to stir;
B) pour low-temperature curing in the mould, demoulding then into;
C) demoulding after scouring, the reprocessing moulding.
The polyvinyl alcohol water solution temperature of heating is 85-95 ℃, and the low-temperature curing temperature is below 60 ℃, 5-15 hour set time.
Polyvinyl alcohol foam material for medical sanitation is used as:
A) the surgery hand is stated the imbibition material of sucking blood of usefulness, wound protecting materials and instruments wiping cloth for wiping or dusting in the surgical procedure;
B) surgical plastic filling residual cavity and damaged depression;
C) electrode pads on the Medical Instruments;
D) make-up and beauty, beauty treatment face are pounced on;
E) ink pad of office appliance and water-absorbing sponge.
The imbibition material of sucking blood that surgical operation is used, traditional material are absorbent gauze, and its absorbent of not only sucking blood is poor, and fibre shedding takes place easily, and unfavorable to performing the operation, material of the present invention is made the imbibition material of sucking blood, and avoid the problems referred to above to take place fully; The apparatus that uses in operation makes cloth for wiping or dusting with this kind material, and wiped clean has also avoided the absorbent gauze fibre shedding to enter operative site.
The filling residual cavity of surgical plastic and damaged depression, the cylindrical body that nasal cavity uses uses this material result good.
Adopt it to make electrode pads on the Medical Instruments, electronics field therapeutic equipment for example, the iontophoresis instrument, to add a pad between electrode and the human body as the absorption soup and play and be connected electric field action, all use Sticky pad at present, its liquid absorption is low, and guarantor's fluidity is poor, one bump adsorption liquid and promptly flow out slightly, material of the present invention has solved the problems referred to above fully, and it is big to have a liquid absorption, protects the characteristics that fluidity can be good, this material also has definite shape, certain wet tenacity, the performance of certain frictional force can be used for make-up and beauty usefulness, and its adsorbable beauty treatment soup is used for the beauty treatment of skin, also can be used as beauty treatment face pounces on, some external import beauty treatment face is pounced in the market, and most is that the raw material foaming forms with the Mierocrystalline cellulose, because Mierocrystalline cellulose derives from timber, its solvent toxicity is big, the cost height; Also useful flexible urethane foam is that raw material is made beauty treatment face and pounced on, and raw material needs import, also has isocyanic ester severe toxicity composition, and the beauty treatment face that this material is made is pounced on and is better than above-mentioned a few class face fully and pounces on quality and cosmetic result.
This material has water-absorbent and oil absorbency and non-swelling performance, and it is clear that the ink pad of making office appliance is affixed one's seal, and sticking seal also can be made into the ink pad of different hardness simultaneously, to adapt to different mass, the seal of hardness uses, as water-absorbing sponge, prevent that hand from skidding, high efficiency.
Compared with the prior art the present invention has following advantage and effect:
A) this material property is stable, and function is many, and purposes is wide, and product category is many;
B) raw material is cheap and easy to get, and production cost is low;
C) product is nontoxic, can sterilize.
Embodiment 1:
Get in 0.9 kilogram of adding of polyvinyl alcohol, 7 kg water and make the aqueous solution, heat to 85 ℃, in the injection whisking machine, add 0.7 kilogram in formaldehyde, 0.8 kilogram of hydrochloric acid (36% concentration), oxalic dialdehyde stirs polyreaction for 0.3 kilogram, the adding sodium bicarbonate stirs for 0.3 kilogram and pours the inherent curing below 60 ℃ of mould 8 hours then into when volume no longer rises, demoulding, washing, drying, cut into the product of different shape again, be used for the medical imbibition material of sucking blood, the cloth for wiping or dusting of medical surgical instrument, surgical operation stopping composition.
Embodiment 2:
Get 1.0 kilograms of polyvinyl alcohol, add and make the aqueous solution in 6.4 kg water and heat, inject in the whisking machine to 95 ℃, add 0.8 kilogram in formaldehyde, 1 kilogram of hydrochloric acid, 0.4 kilogram of oxalic dialdehyde, 0.2 kilogram of dyestuff, stir polyreaction, when volume no longer rises, add 0.4 kilogram of sodium bicarbonate, stir, inject mould then, solidified 10 hours being lower than under 60 ℃ of temperature, through demoulding, washing, dry, cut into difform goods again, promptly colored material is as electrode pads, beauty and make-up, beauty treatment face is pounced on, ink pad, absorbent sponge.
Claims (7)
1, polyvinyl alcohol foam material for medical sanitation, comprise polyvinyl alcohol, formaldehyde is raw material, polyreaction foams with whipping agent again under the acid catalyst effect, through solidifying, demoulding washing, drying, the reprocessing moulding is characterized in that having increased oxalic dialdehyde and adopts sodium bicarbonate as whipping agent in raw material.
2, foam material according to claim 1 is characterized in that each material consumption (by weight) is: polyvinyl alcohol 8-12%, formaldehyde 7-10%, oxalic dialdehyde 3-5%, hydrochloric acid 8-12%, sodium bicarbonate 2-5%, excess water 65-80%.
3, foam material according to claim 1 is characterized in that adding the foam material that dyestuff is made different colours, and its dye dosage is 2-5%.
4, the preparation method of polyvinyl alcohol foam material for medical sanitation is characterized in that being made up of the following step:
A) polyvinyl alcohol is made into the aqueous solution and heats and add in the whisking machine, add again formaldehyde, hydrochloric acid, oxalic dialdehyde, dyestuff, stir polyreaction, when volume no longer rises, add the sodium bicarbonate whipping agent, continue to stir;
B) pour low-temperature curing in the mould, demoulding then into;
C) demoulding after scouring, the reprocessing moulding.
5, preparation method according to claim 4 is characterized in that the polyvinyl alcohol water solution temperature of heating is 85-95 ℃.
6, preparation method according to claim 4 is characterized in that the low-temperature curing temperature below 60 ℃, 5-15 hour set time.
7, according to the foam material of claim 1, be used as:
A) imbibition material of sucking blood that surgical operation is used, wound protecting materials and instruments wiping cloth for wiping or dusting in the surgical procedure;
B) surgical plastic filling residual cavity and damaged depression; C) electrode pads on the Medical Instruments; D) make-up and beauty, beauty treatment face are pounced on; E) ink pad of office appliance and absorbent sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102999A CN1043047C (en) | 1994-05-09 | 1994-05-09 | Polyvinyl alcohol foam material for medical sanitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102999A CN1043047C (en) | 1994-05-09 | 1994-05-09 | Polyvinyl alcohol foam material for medical sanitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095387A CN1095387A (en) | 1994-11-23 |
| CN1043047C true CN1043047C (en) | 1999-04-21 |
Family
ID=5030889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94102999A Expired - Fee Related CN1043047C (en) | 1994-05-09 | 1994-05-09 | Polyvinyl alcohol foam material for medical sanitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043047C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507826B (en) * | 2009-03-24 | 2012-11-14 | 中国科学院长春应用化学研究所 | Preparation method of medical quick imbibition foam material |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045466B (en) * | 2012-12-31 | 2016-01-13 | 山东鑫科生物科技股份有限公司 | Blood microorganism culture flask |
| CN103146104A (en) * | 2013-03-22 | 2013-06-12 | 黎尧文 | Production process for cleaning product |
| CN105251034B (en) * | 2015-11-11 | 2019-03-01 | 中国人民解放军第四军医大学 | It is a kind of hemostasis, anti-infectious surface of a wound composite material |
| CN111195173A (en) * | 2018-11-19 | 2020-05-26 | 江苏昌吉永生物科技股份有限公司 | Injection type hemostatic applicator and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU863600A1 (en) * | 1979-09-07 | 1981-09-15 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Синтетических Смол | Composition for producing porous polyvinylformal |
| EP0587078A1 (en) * | 1992-09-07 | 1994-03-16 | Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha | Process for preparing biodegradable resin foam |
-
1994
- 1994-05-09 CN CN94102999A patent/CN1043047C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU863600A1 (en) * | 1979-09-07 | 1981-09-15 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Синтетических Смол | Composition for producing porous polyvinylformal |
| EP0587078A1 (en) * | 1992-09-07 | 1994-03-16 | Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha | Process for preparing biodegradable resin foam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507826B (en) * | 2009-03-24 | 2012-11-14 | 中国科学院长春应用化学研究所 | Preparation method of medical quick imbibition foam material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1095387A (en) | 1994-11-23 |
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