CN104974325A - Preparation method of high-hydrophily sponge - Google Patents
Preparation method of high-hydrophily sponge Download PDFInfo
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- CN104974325A CN104974325A CN201410138130.1A CN201410138130A CN104974325A CN 104974325 A CN104974325 A CN 104974325A CN 201410138130 A CN201410138130 A CN 201410138130A CN 104974325 A CN104974325 A CN 104974325A
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- sponge
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- polyvinyl alcohol
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Abstract
The invention discloses a preparation method of high-hydrophily sponge. The preparation method comprises the following steps: mixing 35 parts of polyvinyl alcohol with 80 parts of distilled water, and dissolving at a water bath of 50-95 DEG C and the rotation speed of 400r/min-600r/min for 20-30 minutes, so as to obtain a polyvinyl alcohol water solution; after heating the polyvinyl alcohol water solution to 30-100 DEG C, adding an aqueous polyurethane prepolymer, a catalyst and an auxiliary foaming agent, uniformly stirring and mixing at the rotation speed of 400r/min-600r/min, and carrying out idling reaction for 5-10 minutes, so as to obtain standing liquid; adding the standing liquid into a mold, and solidifying the standing liquid at 30-100 DEG C for 2-4 hours, so as to obtain the required sponge. According to the preparation method, the water absorption rate of the high-hydrophily sponge is increased from 4-8 times of the existing polyvinyl acetal sponge to 15-20 times of the existing polyvinyl acetal sponge, and the water absorption velocity of the high-hydrophily sponge is increased from 5g/ming to 10g/ming; the sponge has high hydrophily and resilience, is applied to medical products and has high moisture loss and moisture output performance.
Description
Technical field
The present invention relates to the preparation method of a kind of high-hydrophilic sponge.
Background technology
The usual hardness of existing polyvinylacetal sponge is comparatively large, and be full of air inside the slight gap of sponge under normal circumstances itself, the water-intake rate of sponge is low, and liquid-maintaining capacity is also very low.
Summary of the invention
The present invention in order to overcome the deficiencies in the prior art, the preparation method of the high-hydrophilic sponge providing a kind of liquid-maintaining capacity good.
To achieve these goals, the present invention is by the following technical solutions: the preparation method of a kind of high-hydrophilic sponge, 35 parts of polyvinyl alcohol are comprised the steps: to mix with 80 parts of distilled water, under 50 ~ 95 DEG C of water-baths, under the condition of rotating speed 400 ~ 600r/min, dissolve 20 ~ 30min, obtain polyvinyl alcohol water solution; After polyvinyl alcohol water solution being heated to 30 ~ 100 DEG C, add Waterborne Polyurethane Prepolymer, catalyzer and auxiliary blowing agent, after being uniformly mixed under rotating speed 400 ~ 600r/min condition, idle reaction 5 ~ 10min obtains standing liquid; Again in temperature under 30 ~ 100 DEG C of conditions, standing liquid is placed in mould solidify 2 ~ 4h, namely obtain required sponge.
Further, described Waterborne Polyurethane Prepolymer is 9-12 part.
Further, described catalyzer is 5-8 part.
Further, described auxiliary blowing agent is 3-4 part.
In sum, the present invention has the following advantages: this sponge sucks in water multiplying power brings up to 15 ~ 20 times from 4 ~ 8 times of existing polyvinylacetal sponge, and rate of water absorption brings up to 10g/ming from sponge 5g/ming; High-hydrophilic, high resilience, be applied on medical product, there is high-moisture loss and high-moisture output performance.
Embodiment
In order to make those skilled in the art person better understand the present invention program, below in conjunction with the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
A preparation method for high-hydrophilic sponge, comprises the steps: 35 parts of polyvinyl alcohol to mix with 80 parts of distilled water, under 50 ~ 95 DEG C of water-baths, dissolves 20 ~ 30min, obtain polyvinyl alcohol water solution under the condition of rotating speed 400 ~ 600r/min; After polyvinyl alcohol water solution being heated to 30 ~ 100 DEG C, add Waterborne Polyurethane Prepolymer 9 parts, catalyzer 8 parts and auxiliary blowing agent 3 parts, after being uniformly mixed under rotating speed 400 ~ 600r/min condition, idle reaction 5 ~ 10min obtains standing liquid; Again in temperature under 30 ~ 100 DEG C of conditions, standing liquid is placed in mould solidify 2 ~ 4h, namely obtain required sponge.
Through Experimental Comparison, the sponge that the present invention obtains and existing infirmary with sponge export at moisture loss, moisture, basically identical in the performance of gas-flow resistance.
Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Claims (4)
1. the preparation method of a high-hydrophilic sponge, it is characterized in that: comprise the steps: 35 parts of polyvinyl alcohol to mix with 80 parts of distilled water, under 50 ~ 95 DEG C of water-baths, under the condition of rotating speed 400 ~ 600r/min, dissolve 20 ~ 30min, obtain polyvinyl alcohol water solution; After polyvinyl alcohol water solution being heated to 30 ~ 100 DEG C, add Waterborne Polyurethane Prepolymer, catalyzer and auxiliary blowing agent, after being uniformly mixed under rotating speed 400 ~ 600r/min condition, idle reaction 5 ~ 10min obtains standing liquid; Again in temperature under 30 ~ 100 DEG C of conditions, standing liquid is placed in mould solidify 2 ~ 4h, namely obtain required sponge.
2. the preparation method of high-hydrophilic sponge according to claim 1, is characterized in that: described Waterborne Polyurethane Prepolymer is 9-12 part.
3. the preparation method of high-hydrophilic sponge according to claim 1, is characterized in that: described catalyzer is 5-8 part.
4. the preparation method of high-hydrophilic sponge according to claim 1, is characterized in that: described auxiliary blowing agent is 3-4 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138130.1A CN104974325A (en) | 2014-04-04 | 2014-04-04 | Preparation method of high-hydrophily sponge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138130.1A CN104974325A (en) | 2014-04-04 | 2014-04-04 | Preparation method of high-hydrophily sponge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104974325A true CN104974325A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138130.1A Pending CN104974325A (en) | 2014-04-04 | 2014-04-04 | Preparation method of high-hydrophily sponge |
Country Status (1)
| Country | Link |
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| CN (1) | CN104974325A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106916399A (en) * | 2017-03-17 | 2017-07-04 | 广州润虹医药科技有限公司 | A kind of environmental friend type multifunction composite negative pressure drainage shield wound sponge and preparation method thereof |
| CN108948311A (en) * | 2018-08-02 | 2018-12-07 | 广州浦利姆环保科技有限公司 | A kind of manufacturing method of hydrophily high-rebound polyurethane molding sponge material |
| CN110423331A (en) * | 2019-08-05 | 2019-11-08 | 中电保力（北京）科技有限公司 | A kind of water-swellable flexible flame retardant foamed plastics and preparation method thereof |
| CN110452522A (en) * | 2019-08-01 | 2019-11-15 | 无锡市井上海绵有限公司 | A kind of effectively insulating insulating sponge |
-
2014
- 2014-04-04 CN CN201410138130.1A patent/CN104974325A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106916399A (en) * | 2017-03-17 | 2017-07-04 | 广州润虹医药科技有限公司 | A kind of environmental friend type multifunction composite negative pressure drainage shield wound sponge and preparation method thereof |
| CN106916399B (en) * | 2017-03-17 | 2018-05-15 | 广州润虹医药科技股份有限公司 | A kind of environmental friend type multifunction composite negative pressure drainage shield wound sponge and preparation method thereof |
| CN108948311A (en) * | 2018-08-02 | 2018-12-07 | 广州浦利姆环保科技有限公司 | A kind of manufacturing method of hydrophily high-rebound polyurethane molding sponge material |
| CN110452522A (en) * | 2019-08-01 | 2019-11-15 | 无锡市井上海绵有限公司 | A kind of effectively insulating insulating sponge |
| CN110423331A (en) * | 2019-08-05 | 2019-11-08 | 中电保力（北京）科技有限公司 | A kind of water-swellable flexible flame retardant foamed plastics and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |
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| WD01 | Invention patent application deemed withdrawn after publication |