CN100567627C - A kind of high moisture absorption cloth or tapestry and preparation method thereof - Google Patents
A kind of high moisture absorption cloth or tapestry and preparation method thereof Download PDFInfo
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- CN100567627C CN100567627C CNB2007100317399A CN200710031739A CN100567627C CN 100567627 C CN100567627 C CN 100567627C CN B2007100317399 A CNB2007100317399 A CN B2007100317399A CN 200710031739 A CN200710031739 A CN 200710031739A CN 100567627 C CN100567627 C CN 100567627C
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- tapestry
- moisture absorption
- cloth
- acrylic acid
- absorption cloth
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Abstract
The invention discloses a kind of high moisture absorption cloth or tapestry and preparation method thereof, its preparation method comprises synthetic and two steps of the coating of high imbibition resin on base cloth or tapestry of high imbibition resin, earlier natural polysaccharide or modified polysaccharides are dissolved in the distilled water, obtain the transparent aqueous solution that mass concentration is 0.5-5%; Add the acrylic acid solution that NaOH partly neutralizes, crosslinking agent, redox initiator mix, and are warmed up to 65-85 ℃, polymerisation 2.5-5 hour, obtain the high imbibition resin than thickness; Subsequently the high imbibition resin of gained is coated to the reverse side of base cloth or tapestry, the coating liquid measure is 40-100g/m
2, drying makes high moisture absorption cloth or tapestry.The moisture absorption cloth or the tapestry itself of preparation have intensity preferably, can lose the moisture that is absorbed in the environment of drying, recover moisture absorption ability again in being in moist environment once more, have realized repeated use, help environmental protection, do not have moisture behind the pressurized and overflow.
Description
Technical field
The present invention relates to the preparation technology of special purpose cloth/tapestry, particularly relate to the manufacture method of high moisture absorption cloth or tapestry.
Background technology
In warm south, because there was dampness in the air, the poisonous and harmful substance that steam carries has been quickened the extent of corrosion of indoor placement instrument and equipment, weakens the service life of instrument and equipment.Especially three, the April plum rain season, air humidity is up to more than the 80%RH, wall is dripping, ground is damp always, has a strong impact on resident's daily life and work.People often adopt passive method to dehumidify, as close the doors and windows, and take out with air-conditioning etc.Patent of invention CN02142779.8 relates to a kind of dehumidifier, in this dehumidifier, by compressor cold-producing medium is compressed, pass through condenser, this cold-producing medium is supplied with evaporimeter, make the air that is drawn into main body cover by air inlet enter evaporimeter, realize dehumidifying, then, pass through condenser, this air is discharged from exhaust outlet, and the upper-lower position at main body cover has exhaust outlet.Patent CN0314791 has announced improving one's methods of a kind of moistureproof paper, and moisture-proof coating is coated on the paper carrier, forms damp-proof layer, and used moisture-proof coating has anti-water anti humility performance, therefore can guarantee that the content of this moisture barrier bag is non-hygroscopic.This technology forms one deck damp-proof membrane passively, protects the content of paper product and paper article packaging, and is moistureproof limited in one's ability.Also there is not patent report to prepare the cloth spare or the tapestry of the higher moisture absorption ability of having of a kind of specific use, the airborne moisture of their energy active absorption place seal cavities, thereby guaranteed food, instrument and meter, the dry environment that books and stored goods are required, especially what deserves to be mentioned is that this moisture absorption cloth or tapestry can discharge the moisture that absorbs in automatic slowly ground under very dry environment, can realize the appropriateness control of confined space humidity.Become softlyer after this moisture absorption cloth moisture absorption by original stiffening state, can paste mutually preferably, therefore can better coat fruit, use as the fresh-keeping cloth bag of fruit with content.
Summary of the invention
The object of the present invention is to provide a kind of have the moisture absorption cloth that intensity preferably, the gentle slow release of dehumidification function discharges water part or the preparation method of tapestry.
Another object of the present invention is to provide the moisture absorption cloth or the tapestry of method for preparing.
The object of the invention is achieved through the following technical solutions:
The manufacture method of a kind of high moisture absorption cloth or tapestry comprises the steps and process conditions:
(1) high imbibition resin is synthetic: natural polysaccharide or modified polysaccharides are dissolved in the distilled water, obtain the transparent aqueous solution that mass concentration is 0.5-5%; Add the acrylic acid solution that NaOH partly neutralizes, crosslinking agent, redox initiator mix, and are warmed up to 65-85 ℃, polymerisation 2.5-5 hour, obtain the high imbibition resin than thickness; The mass ratio of described acrylic acid and polysaccharide is 1: 1-10: 1, and described acrylic acid neutralizes with NaOH, and degree of neutralization is 50-85%; Described redox initiator is sodium peroxydisulfate/sodium sulfite compound system, and the sodium peroxydisulfate consumption is acrylic acid 1-5%, and the mass ratio of sodium peroxydisulfate and sodium sulfite is 1: 1-5: 1; Dosage of crosslinking agent is the 0.01-0.05% of acrylic acid quality; (2) coating of high imbibition resin on base cloth or tapestry: the high imbibition resin of step (1) gained is coated to the reverse side of base cloth or tapestry, applies liquid measure at 40-100g/m
2, be dried to constant weight, make high moisture absorption cloth or tapestry.
For further realizing the object of the invention, described natural polysaccharide is a guar gum.Described modified polysaccharides is hydroxypropyl guar gum, soluble starch, hydroxyethylcellulose or carboxymethyl cellulose.Described crosslinking agent is N, the N-methylene-bisacrylamide.Described baking temperature is preferably 100 ± 5 ℃, and the time is 30-45 minute.The mass ratio of described acrylic acid and polysaccharide is preferably 3: 1-6: 1, and the acrylic acid degree of neutralization is 70-85%.The mass ratio of described sodium peroxydisulfate and sodium sulfite is preferably 2: 1-5: 1.The time of described polymerisation is preferably 2.5-4 hour, and temperature is 75-80 ℃.
The high moisture absorption cloth or the tapestry of method for preparing, its resin dry thicknesses of layers 20-80 micron, moisture absorption ratio is 150-280%.
The present invention is the back side that a kind of resin solution of high imbibition ability is coated in base cloth or tapestry, through making moisture absorption cloth or tapestry after the common process oven dry.Can absorb airborne moisture effectively, reduce the humidity of air, when moisture absorption cloth or tapestry after the moisture absorption are placed into dry place, it can discharge the moisture that it carries again lentamente, thereby realize the repeated use of moisture absorption cloth or tapestry, and cloth has intensity preferably, can use repeatedly.
With respect to prior art, the present invention has following advantage and beneficial effect:
(1) the high moisture absorption cloth or the tapestry moisture absorption, the dehumidifying pointedly of the present invention's preparation, and under dry exsiccosis, can slowly discharge moisture, keep the required constant humidity of environment.The existing container of dehumidification equipment or filling dehumidizer that utilizes is removed the dehumidifying technology that water in air is divided, because the latent heat of vaporization of water is very high, the energy consumption of dehumidifying will account for the 20%-40% of air-conditioning total energy consumption, there is the high problem of energy consumption, and the technology of the present invention has bigger difference on principle, is energy-conservation dehumidifying technology.
(2) moisture absorption cloth or the tapestry itself of the present invention's preparation have intensity preferably; in the environment of drying, can lose the moisture that is absorbed, in being in moist environment once more, recover moisture absorption ability again, realize repeated use; help environmental protection, and also do not have moisture behind the pressurized and overflow.
(3) the present invention can make high moisture absorption cloth or tapestry by the synthetic and high imbibition resin of high imbibition resin in steps such as the back side of base cloth or tapestry coatings; the preparation method is simple and practical; but scale is applied to industrial production; thereby realized the multifunction of common cloth/tapestry, given them certain moisture absorption drying property.
(4) moisture absorption cloth uses as fruit antistaling agent, and coated high imbibition resin is nontoxic, is a kind of safe preservation method, owing to can reuse, cost is low.
The specific embodiment
The present invention is further illustrated below by embodiment.Wherein, the assay method of water absorbing capacity is as follows: with embodiment 1,2, and the high imbibition resin of 3,4 preparations, 60 ℃ of vacuum drying chambers ,-0.1MPa dries to constant weight, and then, obtains granular high hydroscopic resin with the pulverizer pulverizing.Take by weighing 0.1 this pelletized product of gram, adding fills in the beaker of 1000 ml waters, soaks 1 hour, filters with 200 order Nylon Bags, measures the volume V1 that filters back water, then water absorption rate Q=(1000-V1)/0.1.
The mensuration of the moisture absorption ratio of moisture absorption cloth or tapestry: moisture absorption ratio u=(M3-M2) * 100/ (M2-M1) M1 is base cloth/woollen blanket quality, g; M2 is moisture absorption cloth or the dried quality of tapestry, g; M3 is the quality after the moisture absorption cloth or the tapestry moisture absorption, g.
Embodiment 1:
1.5 kilograms of guar gums are dissolved in 298.5 kg water, obtain mass concentration and be 0.5% aqueous guar glue solution, be designated as raw material A; Other gets 6 kilograms of acrylic acid, with 2.83 kg of hydrogen sodium oxide molybdenas and the neutralization of 10 kg water solution, degree of neutralization is 85%, and with aforesaid propylene acid sodium solution and 0.003 kilogram of crosslinking agent N, the N-methylene-bisacrylamide mixes (with respect to acrylic acid consumption 0.05%) and is designated as raw material B; Take by weighing 0.3 kilogram of sodium peroxydisulfate, be designated as raw material C; Take by weighing 0.15 kilogram of sodium sulfite, be designated as raw material D; With above-mentioned reaction mass A, B, C, D mixes fully, and reaction mass is warmed up to 75 ℃, and constant temperature arrest reaction 4 hours obtains the high imbibition resin of certain viscosity, and its amount of inhaling distilled water is 602g/g.
Select the square tapestry of 30 * 30cm for use, the high imbibition resin solution of the foregoing description is coated in the back side of this tapestry, can adopt hand to be coated with, perhaps use small-sized bubbler (for example: useless hand cleanser bottle), apply liquid measure control 100g/m
2, to handle through oven dry then, temperature is 100 ± 5 ℃, and drying time is 45 minutes, obtains moisture-absorbing cloth/tapestry at last, and thicknesses of layers is 80 microns.The tapestry of intercepting 5 * 5cm places 25 ℃, and humidity is in the climatic chamber of 80%RH, and recording its moisture absorption ratio is 280%.Hang up in the wardrobe that blanket is placed on 1.8m * 0.5m * 1.8m 2, close the door of wardrobe, measure the relative humidity of placing 4 hours air before and after the moisture-absorbing cloth/tapestry simultaneously, find that relative humidity has reduced 30%.Illustrate that the moisture-absorbing cloth/tapestry that utilizes the technology of the present invention preparation can make clothes be in dry space as the moisture absorption instrument of confined spaces such as wardrobe, prevents that clothing from becoming moistening or mouldy.
Embodiment 2
1 kilogram of hydroxyethylcellulose is dissolved in 19 kg water, obtains mass concentration and be 5% the aqueous solution, be designated as raw material A.Other gets 6 kilograms of acrylic acid, with 2.3 kg of hydrogen sodium oxide molybdenas and the neutralization of 10 kg water solution, degree of neutralization is 70%, with aforesaid propylene acid sodium solution and 0.003 kilogram of crosslinking agent N, N-methylene-bisacrylamide (is 0.05% with respect to acrylic acid consumption) mixes, and is designated as raw material B; Take by weighing 0.2 kilogram of sodium peroxydisulfate, be designated as raw material C; 0.04 the kilogram sodium sulfite is designated as raw material D.With A, B, C, D mixes fully, and reaction mass is warmed up to 80 ℃, and constant temperature arrest reaction 2.5 hours obtains the high imbibition resin of certain viscosity, and its amount of inhaling distilled water is 480g/g.
Select the square textile cloth of 10 * 10cm for use, the high imbibition resin solution of the foregoing description is coated in the back side of this base cloth, coating can adopt hand to be coated with, and perhaps uses small-sized bubbler (for example: useless hand cleanser bottle), apply liquid measure 80g/m
2,, to handle through conventional oven dry then, temperature is 100 ± 5 ℃, and drying time is 30 minutes, obtains moisture absorption cloth at last, and thicknesses of layers is 40 microns.The moisture absorption cloth of intercepting 5 * 5cm places 25 ℃, and humidity is in the climatic chamber of 80%RH, and recording its moisture absorption ratio is 165%.
4 moisture absorption cloth are placed in the sealing carton of splendid attire books, carton is of a size of 30 * 20 * 20cm, can prevent effectively that the books moisture absorption is impaired.
Embodiment 3
1.5 kilograms of soluble starches are dissolved in the double centner water, obtain mass concentration and be 1.5% aqueous guar glue solution, be designated as raw material A.Other gets 4.5 kilograms of acrylic acid, with 2 kg of hydrogen sodium oxide molybdenas and 1,000 gram aqueous solution neutralizations, degree of neutralization is 80%, with aforesaid propylene acid sodium solution and 0.0004 kilogram of crosslinking agent N, N-methylene-bisacrylamide (is 0.01% with respect to the acrylic acid consumption) mixes, and is designated as raw material B; Take by weighing 0.045 kilogram of potassium peroxydisulfate, be designated as raw material C; 0.045 the kilogram sodium sulfite is designated as raw material D.With A, B, C, D mixes fully, and reaction mass is warmed up to 75 ℃, and constant temperature arrest reaction 4 hours obtains the high imbibition resin of certain viscosity, and its amount of inhaling distilled water is 385g/g.
Select the square tapestry of 50 * 50cm for use, the high imbibition resin solution of the foregoing description is coated in the back side of this tapestry, can adopt hand to be coated with, perhaps use small-sized bubbler (for example: useless hand cleanser bottle), apply liquid measure control 100g/m
2, to handle through oven dry then, temperature is 100 ± 5 ℃, and drying time is 45 minutes, obtains moisture-absorbing cloth/tapestry at last, and thicknesses of layers is 80 microns.The tapestry of intercepting 5 * 5cm places 25 ℃, and humidity is in the climatic chamber of 80%RH, and recording its moisture absorption ratio is 180%.Hang up on the wall of storeroom that blanket is placed on 1.8m * 0.5m * 1.8m 3, measure the relative humidity of placing 4 hours air before and after the moisture-absorbing cloth/tapestry simultaneously, find that relative humidity has reduced 25%.Illustrate that this moisture-absorbing cloth/tapestry can guarantee the article of storeroom, be in dry and comfortable state, change the phenomenon of wall infiltration.
Embodiment 4
1.5 kilograms of soluble starches are dissolved in the double centner water, obtain mass concentration and be 1.5% aqueous guar glue solution, be designated as raw material A.Other gets 8.0 kilograms of acrylic acid, with 3.78 kg of hydrogen sodium oxide molybdenas and the neutralization of 10 kg water solution, degree of neutralization is 85%, with aforesaid propylene acid sodium solution and 0.0032 kilogram of crosslinking agent N, N-methylene-bisacrylamide (is 0.04% with respect to the acrylic acid consumption) mixes, and is designated as raw material B; Take by weighing 0.32 kilogram of potassium peroxydisulfate, be designated as raw material C; 0.16 the kilogram sodium sulfite is designated as raw material D.With A, B, C, D mixes fully, and reaction mass is warmed up to 75 ℃, and constant temperature arrest reaction 3 hours obtains the high imbibition resin of certain viscosity, and its amount of inhaling distilled water is 756g/g.
Select the square textile cloth of 15 * 15cm for use, the high imbibition resin solution of the foregoing description is coated in the back side of this base cloth, coating can adopt hand to be coated with, and perhaps uses small-sized bubbler (for example: useless hand cleanser bottle), apply liquid measure 40g/m
2,, to handle through conventional oven dry then, temperature is 100 ± 5 ℃, and drying time is 30 minutes, obtains moisture absorption cloth at last, and thicknesses of layers is 20 microns.The above-mentioned moisture absorption cloth of intercepting 5 * 5cm places 25 ℃, and humidity is in the climatic chamber of 80%RH, and recording its moisture absorption ratio is 150%.With this moisture absorption cloth parcel apple, place 25 ℃, humidity is in the carton of 80%RH, find after 10 minutes moisture absorption paper by original than hard state to softer, can wrap up apple, therefore, guaranteed the humidity of apple fresh-keeping needs.Illustrate that the moisture absorption cloth that utilizes the technology of the present invention preparation can use as fruit freshness preserving cloth, prevent that fruit from drying out in storage process, pericarp is sent out wrinkle, with respect to existing preservative film, this moisture absorption cloth humidity in can automatic control stuff box is when in the fruit case during air drying, the moisture absorption cloth after the moisture absorption can slowly discharge moisture, humidity is bigger in fruit case, and moisture absorption cloth performance moisture absorption ability prevents that fruit is mouldy.
Claims (6)
1, the manufacture method of a kind of high moisture absorption cloth or tapestry is characterized in that comprising the steps and process conditions:
(1) high imbibition resin is synthetic: natural polysaccharide or modified polysaccharides are dissolved in the distilled water, obtain the transparent aqueous solution that mass concentration is 0.5-5%; Add the acrylic acid solution that NaOH partly neutralizes, crosslinking agent, redox initiator mix, and are warmed up to 65-85 ℃, polymerisation 2.5-5 hour, obtain the high imbibition resin than thickness; The mass ratio of described acrylic acid and polysaccharide is 1: 1-10: 1, and described acrylic acid neutralizes with NaOH, and degree of neutralization is 50-85%; Described redox initiator is sodium peroxydisulfate/sodium sulfite compound system, and the sodium peroxydisulfate consumption is acrylic acid 1-5%, and the mass ratio of sodium peroxydisulfate and sodium sulfite is 1: 1-5: 1; Dosage of crosslinking agent is the 0.01-0.05% of acrylic acid quality;
(2) coating of high imbibition resin on base cloth or tapestry: the high imbibition resin of step (1) gained is coated to the reverse side of base cloth or tapestry, applies liquid measure at 40-100g/m
2, be dried to constant weight, make high moisture absorption cloth or tapestry;
Described natural polysaccharide is a guar gum;
Described modified polysaccharides is hydroxypropyl guar gum, soluble starch, hydroxyethylcellulose or carboxymethyl cellulose;
Described crosslinking agent is N, the N-methylene-bisacrylamide.
2, the manufacture method of high moisture absorption cloth according to claim 1 or tapestry is characterized in that described baking temperature is 100 ± 5 ℃, and the time is 30-45 minute.
3, the manufacture method of high moisture absorption cloth according to claim 1 or tapestry, the mass ratio that it is characterized in that described acrylic acid and polysaccharide is 3: 1-6: 1, the acrylic acid degree of neutralization is 70-85%.
4, the manufacture method of high moisture absorption cloth according to claim 1 or tapestry, the mass ratio that it is characterized in that described sodium peroxydisulfate and sodium sulfite is 2: 1-5: 1.
5, the manufacture method of high moisture absorption cloth according to claim 1 or tapestry is characterized in that described polymeric reaction temperature is 75-80 ℃, and the time is 2.5-4 hour.
6, the high moisture absorption cloth or the tapestry of each described method preparation of claim 1～5 is characterized in that described high moisture absorption cloth resin dry thicknesses of layers 20-80 micron, and moisture absorption ratio is 150-280%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100317399A CN100567627C (en) | 2007-11-28 | 2007-11-28 | A kind of high moisture absorption cloth or tapestry and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100317399A CN100567627C (en) | 2007-11-28 | 2007-11-28 | A kind of high moisture absorption cloth or tapestry and preparation method thereof |
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| CN101200856A CN101200856A (en) | 2008-06-18 |
| CN100567627C true CN100567627C (en) | 2009-12-09 |
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| CNB2007100317399A Expired - Fee Related CN100567627C (en) | 2007-11-28 | 2007-11-28 | A kind of high moisture absorption cloth or tapestry and preparation method thereof |
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Application publication date: 20080618 Assignee: National Engineering Research Center of papermaking and pollution control, South China University of Technology, Guangdong, China Assignor: South China University of Technology Contract record no.: 2010440000200 Denomination of invention: Highly moisture-absorbing cloth/tapestry and preparation method thereof Granted publication date: 20091209 License type: Exclusive License Record date: 20100118 |
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Granted publication date: 20091209 Termination date: 20121128 |