CN109513426A - A kind of desiccant and preparation method thereof - Google Patents
A kind of desiccant and preparation method thereof Download PDFInfo
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- CN109513426A CN109513426A CN201811232752.5A CN201811232752A CN109513426A CN 109513426 A CN109513426 A CN 109513426A CN 201811232752 A CN201811232752 A CN 201811232752A CN 109513426 A CN109513426 A CN 109513426A
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Abstract
The invention belongs to desiccant technical fields, and in particular to a kind of desiccant and preparation method thereof is made of: 2-5 parts of waste iron filing, 10-15 parts of anhydrous calcium chloride, 1-5 parts of bamboo charcoal, 25-35 parts of high hydroscopic resin, 3-6 parts of silica the raw material of following portions by weight；Desiccant of the present invention possesses preparation process simplicity, hydroscopicity is high, there are no pollution to the environment, deoxidation effect is significant, after deoxidation moisture absorption, desiccant occurs without sepage phenomenon, and high hydroscopic resin used in desiccant is to be prepared after waste yarn that fiber is material is recovered, to realize the purpose that waste recovery recycles.
Description
Technical field
The invention belongs to desiccant technical fields, and in particular to a kind of desiccant and preparation method thereof.
Background technique
Crisis of resource and environmental pollution are two hang-ups that annoying countries in the world at present, on the one hand, with population
There is problem in short supply in increasing textile raw material, and significantly going up also occurs in price；On the other hand, produced by fabrication processes
Fiber be material waste yarn as a kind of solid pollutant its quantity also cumulative year after year, become one of environmental pollution not
Hold the source despised；Fiber be material waste yarn in process of production, can all be inevitably generated waste, such as comb fiber crops
The breakings and hards generated in the process, these textile waste ingredients are all relatively simple, and main component is fiber, recycling
It is the waste yarn of material using fiber caused by fabrication processes, can not only reduces environmental pollution, while realizing waste
The purpose of recycling and reusing, thus the problem of alleviating resource scarcity.
Powdered desiccant is not easy to be fixed in process, limits the further application of powder desiccant, and powder
Last shape desiccant is easy to produce dust, once being inhaled into vivo, serious consequence can be caused to body；Although previous desiccant energy
Enough meet the moisture-proof purpose of dehumidifying in some fields, but that there is moisture pick-up properties is lower, water retention is low, the feelings of sepage easily occurs
Shape, and the problems such as performance is single, and desiccant preparation process is complicated.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of desiccant and preparation method thereof, finally prepare
Obtained desiccant possesses preparation process simplicity, and hydroscopicity is high, and there are no pollution to the environment, and deoxidation effect is significant, after deoxidation moisture absorption,
Desiccant occurs without sepage phenomenon；And high hydroscopic resin used in desiccant is the recovered rear preparation of waste yarn that fiber is material
It obtains, to realize the purpose that waste recovery recycles.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of desiccant is made of the raw material of following portions by weight: 2-5 parts of waste iron filing, 10-15 parts of anhydrous calcium chloride, bamboo charcoal 1-5
Part, 25-35 parts of high hydroscopic resin, 3-6 parts of silica；
Preferably, the waste iron filing, anhydrous calcium chloride, bamboo charcoal, silica partial size are 50-80 mesh.
Preferably, the high hydroscopic resin is cellulose graft acrylic acid high hydroscopic resin.
The present invention also provides the preparation methods of cellulose graft acrylic acid high hydroscopic resin, and steps are as follows:
1) it is the waste yarn of material by fiber, cleans in deionized water, and in 105 DEG C of drying in oven 2h；It will drying
Obtained waste yarn is added in the sodium hydroxide solution that mass concentration is 11g/L, heating stirring, and heating temperature is 100 DEG C,
Mixing speed is 350r/min, mixing time 1.5h, and after the completion of stirring, it is 7 that deionized water, which is rinsed to pH, is then added into
Into the sodium hydroxide of 13g/L, 3g/L sodium metasilicate and 4g/L polyphosphoric acids sodium solution, heating stirring, heating temperature is 100 DEG C,
Mixing speed is 500r/min, mixing time 2.5h, and after the completion of stirring, it is 3g/L sulfuric acid solution that mass concentration, which is added dropwise,
Until pH is 7, deionized water, which is rinsed, removes residual sulfuric acid, obtains cellulose.
2) obtained cellulose is added in reaction kettle, then potassium peroxydisulfate, ammonium ceric nitrate is added in reaction kettle,
Heating stirring, heating temperature are 100 DEG C, mixing speed 300r/min, mixing time 30min, after the completion of stirring, Xiang Fanying
It is added in kettle and in sodium hydroxide and is crossed and monomeric acrylic, sodium sulfite, acrylamide and two allyls that degree of neutralization is 70%
Base alkyl dimethyl ammonium chloride, is at the uniform velocity stirred, mixing speed 400r/min, mixing time 1.5h, after the reaction was completed, is added and is handed over
Join agent N, N'- methylene-bisacrylamide carries out graft reaction, after reacting 5h, obtains cellulose graft acrylic acid super absorbent resin
Rouge.
Using desiccant of the invention, the performance indexes of desiccant can be significantly improved, in which: waste iron filing is placed on
In air, it is easy to happen oxidation reaction, is current the most widely used deoxidation material, in standard since it is green, pollution-free
Situation, not there is a situation where when any other reaction, oxidation reaction occurs for the oxygen that 1 gram of waste iron filing can about dissociate with 300mL,
That is 1 gram of waste iron filing about can remove the oxygen in about 1500mL air, and deaerating effect is relatively preferable, and cost compared with
It is low；Anhydrous calcium chloride possesses stronger water absorbing capacity, greatly improves drying effect；Bamboo charcoal is loose porous, possesses very strong
Adsorption capacity can not only enhance the wettability power of desiccant, additionally it is possible to purify air, eliminate peculiar smell, antibacterial expelling parasite；Super absorbent resin
Rouge possesses hydrophilic radical, after absorbing large quantity of moisture, and swelling can maintain moisture not outflow again, during preparing high hydroscopic resin,
Be added through in sodium hydroxide and cross and degree of neutralization be 70% monomeric acrylic, can effectively enhance the moisture pick-up properties of high hydroscopic resin
And water retention property, if degree of neutralization is too low, in polymerization process, reaction is not easy to be controlled, to generate height
The polymer of crosslinking reduces the moisture pick-up properties of high hydroscopic resin, if degree of neutralization is excessively high, due to high hydroscopic resin water solubility
Increase, reduces the moisture pick-up properties of high hydroscopic resin；Silica is a kind of nontoxic, free of contamination inorganic material, possess hardness it is big,
The advantages of stable chemical performance, after desiccant absorbs moisture, silica will not have space deformation, therefore will not influence drying
The deoxidation drying capacity of agent, and can be reduced surfaces stick, play the role of dispersion.
A kind of preparation method of desiccant, includes the following steps:
1) waste iron filing, anhydrous calcium chloride, bamboo charcoal, high hydroscopic resin, silica are added in powder stirrer and are stirred, stirred
Speed is 400-500r/min, mixing time 1-2h, and the uniform mixed-powder of each feed distribution is made；
2) the uniform mixed-powder of each feed distribution will be made to be input in pelletizer, after the completion of input, pelletizer starts to stir,
And be added to the deionized water of mixed-powder quality 25-35% in mixed-powder by spray gun, uniform stirring, mixing speed is
1500-1800r/min, lance ejection deionized water flow velocity is 20-30ml/min, after the completion of injection, after persistently stirring 2min, is opened
Shredder bar is opened, is granulated, the particle after granulation is spherical shape, and the spherical particle diameters after granulation are 0.5-5mm；
3) spheric granules is input in roaster dried, dry after screen, that is, the desiccant is prepared；It dried
Cheng Zhong, drying temperature are 100-150 DEG C, drying time 1-1.5h, and in screening process, sieve mesh number is 15-35 mesh.
Beneficial effect
The beneficial effects of the present invention are:
1) anhydrous calcium chloride possesses stronger water absorbing capacity, greatly improves drying effect, but will appear infiltration after absorbing moisture
The case where liquid, cellulose graft acrylic acid high hydroscopic resin have the presence of hydrogen bond, and cellulose graft acrylic acid super absorbent resin is added
Rouge not only enhances the water absorbing capacity of desiccant, also enhances the water holding capacity of desiccant, prevents desiccant from the case where sepage occur.
2) waste iron filing possesses the ability of deoxidation, but single waste iron filing is easily oxidized, and is paid no attention to so as to cause deoxidation effect
Think, bamboo charcoal is added in drying machine, the wettability power of desiccant can not only be enhanced, additionally it is possible to purify air, eliminate peculiar smell, suppression
Bacterium expelling parasite, and have certain protection to waste iron filing, to avoid iron series deoxidizers deoxidation effect undesirable.
3) super absorbent resin fat raw material used in the present invention possesses extremely strong water absorbing capacity and water holding capacity, while super absorbent resin
Fat raw material preparation raw material used is the waste yarn that fiber is material, has not only reached the requirement of desiccant water-absorbing-retaining, together
When realize waste recovery recycling purpose.
4) present invention both overcomes by desiccant by manufacturing graininess and is not easy to be fixed in process,
The problem of limiting the further application of desiccant, also avoids the problem of powdered desiccant is easy to produce dust, to have
Effect avoids being inhaled into human body because of desiccant powder, caused by serious consequence, and preparation process is easy in desiccant preparation process, right
Environmental nonpollution.
Detailed description of the invention
Fig. 1 is a kind of desiccant preparation flow schematic diagram.
Fig. 2 is waste yarn (a), waste yarn processing acquisition cellulose (b), cellulose graft acrylic acid high hydroscopic resin
(c) SEM figure.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
Embodiment 1-8
A kind of desiccant is made of the raw material of following portions by weight: 2-5 parts of waste iron filing, 10-15 parts of anhydrous calcium chloride, bamboo charcoal 1-5
Part, 25-35 parts of high hydroscopic resin, 3-6 parts of silica；
Preferably, the waste iron filing, anhydrous calcium chloride, bamboo charcoal, silica partial size are 50-80 mesh.
Preferably, the high hydroscopic resin is cellulose graft acrylic acid high hydroscopic resin.
The present invention also provides the preparation methods of cellulose graft acrylic acid high hydroscopic resin, and steps are as follows:
1) it is the waste yarn of material by fiber, cleans in deionized water, and in 105 DEG C of drying in oven 2h；It will drying
Obtained waste yarn is added in the sodium hydroxide solution that mass concentration is 11g/L, heating stirring, and heating temperature is 100 DEG C,
Mixing speed is 350r/min, mixing time 1.5h, and after the completion of stirring, it is 7 that deionized water, which is rinsed to pH, is then added into
Into the sodium hydroxide of 13g/L, 3g/L sodium metasilicate and 4g/L polyphosphoric acids sodium solution, heating stirring, heating temperature is 100 DEG C,
Mixing speed is 500r/min, mixing time 2.5h, and after the completion of stirring, it is 3g/L sulfuric acid solution that mass concentration, which is added dropwise,
Until pH is 7, deionized water, which is rinsed, removes residual sulfuric acid, obtains cellulose.
2) obtained cellulose is added in reaction kettle, then potassium peroxydisulfate, ammonium ceric nitrate is added in reaction kettle,
Heating stirring, heating temperature are 100 DEG C, mixing speed 300r/min, mixing time 30min, after the completion of stirring, Xiang Fanying
It is added in kettle and in sodium hydroxide and is crossed and monomeric acrylic, sodium sulfite, acrylamide and two allyls that degree of neutralization is 70%
Base alkyl dimethyl ammonium chloride, is at the uniform velocity stirred, mixing speed 400r/min, mixing time 1.5h, after the reaction was completed, is added and is handed over
Join agent N, N'- methylene-bisacrylamide carries out graft reaction, after reacting 5h, obtains cellulose graft acrylic acid super absorbent resin
Rouge.
A kind of composition of desiccant is as shown in table 1 in embodiment 1-8, and the corresponding numerical value of raw material is used in the raw material in table 1
Parts by weight.
The parts by weight of 1 raw material of table composition
| Embodiment | Waste iron filing | Anhydrous calcium chloride | Bamboo charcoal | High hydroscopic resin | Silica |
| Embodiment 1 | 3 | 10 | 2 | 25 | 5 |
| Embodiment 2 | 5 | 11 | 4 | 28 | 3 |
| Embodiment 3 | 2 | 14 | 1 | 29 | 3 |
| Embodiment 4 | 4 | 12 | 5 | 31 | 4 |
| Embodiment 5 | 2 | 15 | 2 | 27 | 5 |
| Embodiment 6 | 5 | 13 | 3 | 31 | 4 |
| Embodiment 7 | 3 | 13 | 5 | 30 | 6 |
| Embodiment 8 | 2 | 12 | 1 | 35 | 6 |
When prepared by embodiment 1-8 desiccant, raw material, a kind of desiccant system are weighed according to parts by weight used in each raw material in table 1
Preparation Method, steps are as follows:
1) waste iron filing, anhydrous calcium chloride, bamboo charcoal, high hydroscopic resin, silica are added in powder stirrer and are stirred, stirred
After the completion, the uniform mixed-powder of each feed distribution is made；
2) the uniform mixed-powder of each feed distribution will be made to be input in pelletizer, after the completion of input, pelletizer is certain
Start to stir under mixing speed, and a certain amount of deionized water is added in mixed-powder by spray gun, deionized water injection
After the completion, after persistently stirring 2min, shredder bar is opened, is granulated, the particle after granulation is spherical shape, and spherical after granulation
Grain diameter is 0.5-5mm;
3) spheric granules is input in roaster dried, dry after screen, that is, the desiccant is prepared.
Wherein, when prepared by embodiment 1-8 desiccant, step 1) whipping process, mixing speed Ar/min, mixing time are
Mixing speed is Cr/min in Bh, step 2 whipping process, and added deionized water dosage accounts for the percentage of mixed-powder quality
Number is D%, lance ejection deionized water flow velocity is Eml/min, and after step 3) drying in screening process, drying temperature is F DEG C, dries
The time is done as Gh, in screening process, sieve mesh number is H mesh, and see Table 2 for details for specific each step relevant parameter.
Each step relevant parameter of table 2
| Embodiment | Ar/min | Bh | Cr/min | D% | Eml/min | F℃ | Gh | H mesh |
| Embodiment 1 | 470 | 1.8 | 1500 | 29 | 27 | 125 | 1.1 | 33 |
| Embodiment 2 | 450 | 1.0 | 1550 | 25 | 20 | 110 | 1.4 | 15 |
| Embodiment 3 | 420 | 1.4 | 1700 | 32 | 24 | 100 | 1.3 | 21 |
| Embodiment 4 | 400 | 1.5 | 1600 | 30 | 25 | 140 | 1.5 | 25 |
| Embodiment 5 | 460 | 1.1 | 1750 | 28 | 29 | 120 | 1.1 | 18 |
| Embodiment 6 | 480 | 1.7 | 1650 | 33 | 26 | 130 | 1.2 | 28 |
| Embodiment 7 | 500 | 1.3 | 1800 | 35 | 21 | 150 | 1.4 | 35 |
| Embodiment 8 | 410 | 2.0 | 1700 | 31 | 30 | 110 | 1.0 | 34 |
Comparative example 1
The present embodiment provides a kind of desiccant (based on parts by weight), compared with Example 1, the difference is that, waste iron filing 1
Part, 18 parts of anhydrous calcium chloride, 7 parts of bamboo charcoal, 18 parts of high hydroscopic resin, 8 parts of silica, remaining is same as Example 1.
Comparative example 2
The present embodiment provides a kind of desiccant (based on parts by weight), compared with Example 1, the difference is that, super absorbent resin
25 parts of rouge are substituted for 30 parts of attapulgite clay, remaining is same as Example 1.
Comparative example 3
The present embodiment provides a kind of desiccant preparation methods, and steps are as follows:
1) waste iron filing, anhydrous calcium chloride, bamboo charcoal, high hydroscopic resin, silica are added in powder stirrer and are stirred, stirred
Speed is 300r/min, mixing time 3h, and each raw material mixed powder end is made；
2) each raw material mixed powder end will be made to be input in pelletizer, after the completion of input, pelletizer starts to stir, and by mixed powder
The deionized water of last quality 50% is added in mixed-powder by spray gun, uniform stirring, mixing speed 1100r/min, spray gun
Injection deionized water flow velocity is 15ml/min, after the completion of injection, after persistently stirring 2min, opens shredder bar, is granulated, be granulated
Particle afterwards is spherical shape, and the spherical particle diameters after granulation are 0.5-5mm;
3) spheric granules is input in roaster dried, dry after screen, that is, the desiccant is prepared；It dried
Cheng Zhong, drying temperature are 200 DEG C, drying time 2h, and in screening process, sieve mesh number is 12 mesh.
Comparative example 4
The present embodiment provides a kind of preparation methods of desiccant, compared with Example 1, the difference is that, cellulose graft third
In the preparation process of olefin(e) acid high hydroscopic resin, in step 2 into reaction kettle be added through in sodium hydroxide and cross and degree of neutralization be
70% monomeric acrylic is substituted for the monomeric acrylic without neutralization, remaining is same as Example 1.
Conventional performance index test is carried out to the desiccant that embodiment 1-8 and comparative example 1-4 are prepared, as a result such as table 3
It is shown.
3 conventional performance index test result of table
| Embodiment | Temperature (DEG C) | Relative humidity RH30% hydroscopicity (%) | Relative humidity RH60% hydroscopicity (%) | Relative humidity RH90% hydroscopicity (%) | Deoxidation effectiveness (ml/g) | Water retention (%) |
| Embodiment 1 | 25 | 19.41 | 24.14 | 34.49 | 129 | 81.22 |
| Embodiment 2 | 25 | 20.09 | 26.13 | 38.11 | 137 | 83.61 |
| Embodiment 3 | 25 | 18.47 | 23.22 | 32.57 | 128 | 85.11 |
| Embodiment 4 | 25 | 21.03 | 26.71 | 40.16 | 134 | 86.72 |
| Embodiment 5 | 25 | 20.19 | 24.96 | 35.16 | 131 | 84.19 |
| Embodiment 6 | 25 | 22.24 | 27.66 | 41.43 | 139 | 89.91 |
| Embodiment 7 | 25 | 20.55 | 25.34 | 36.72 | 126 | 83.14 |
| Embodiment 8 | 25 | 21.51 | 25.99 | 37.51 | 129 | 87.76 |
| Comparative example 1 | 25 | 8.96 | 16.41 | 25.81 | 88 | 57.52 |
| Comparative example 2 | 25 | 7.44 | 14.94 | 24.69 | 112 | 49.72 |
| Comparative example 3 | 25 | 10.23 | 19.12 | 29.93 | 104 | 53.12 |
| Comparative example 4 | 25 | 8.58 | 15.77 | 24.74 | 110 | 52.56 |
As shown in Table 3: the desiccant that embodiment 1-8 is prepared carries out conventional performance index test, is 25 DEG C of conditions in temperature
Under, when relative humidity RH is respectively 30%, 60%, 90%, minimum hydroscopicity is respectively 18.47%, 23.22%, 32.57%, and is compared
The desiccant that example 1-4 is prepared, under the conditions of temperature is 25 DEG C, when relative humidity RH is respectively 30%, 60%, 90%, hydroscopicity
Highest is respectively 10.23%, 19.12%, 29.93%, and the desiccant being prepared by embodiment 1-8 is 25 DEG C in temperature, relatively wet
It spends minimum hydroscopicity when RH is respectively 30%, 60%, 90% and is above the desiccant that comparative example 1-4 is prepared under equal conditions, it can
Know, the desiccant that the desiccant that embodiment 1-8 is prepared is prepared in terms of hydroscopicity better than comparative example 1-4, and implements
Minimum desiccant deoxidation effectiveness, the water retention that example 1-8 is prepared is respectively 126 ml/g, 81.22%, and prepared by comparative example 1-4
Obtained desiccant deoxidation effectiveness, water retention highest are respectively 112 ml/g, 57.52%, the drying that embodiment 1-8 is prepared
Agent deoxidation effectiveness, water retention minimum are above the desiccant that comparative example 1-4 is prepared, in summary, embodiment 1-8 preparation
Obtained desiccant is better than the desiccant that comparative example 1-4 is prepared, and the desiccant that embodiment 6 is prepared is 25 in temperature
DEG C, hydroscopicity highest when relative humidity RH is respectively 30%, 60%, 90%, and 139 ml/g of deoxidation effectiveness, water retention 89.91% are equal
For maximum value, therefore the desiccant performance that embodiment 6 is prepared is best.
The desiccant that last embodiment 1-8 is prepared possesses preparation process simplicity, and hydroscopicity is high, to environment without dirt
Dye, deoxidation effect is significant, after deoxidation moisture absorption, the advantages that desiccant is without sepage, and high hydroscopic resin used in desiccant is that fiber is
It is prepared after the waste yarn of material is recovered, adequately achieves the recycling and reusing of waste.
Comparative example 1 provides a kind of desiccant (based on parts by weight), compared with Example 1, the difference is that, change dry
Drying prescription parts by weight proportion, other are same as Example 1, and the desiccant being prepared is 25 DEG C in temperature, relative humidity difference
When being 30%, 60%, 90%, hydroscopicity is declined compared to embodiment 1, and deoxidation effectiveness, water retention decrease, table
The parts by weight proportion of bright desiccant of the present invention rationally, can effectively improve the hydroscopicity, DNA vaccine, water retention of desiccant.
Comparative example 2 provides a kind of desiccant (based on parts by weight), compared with Example 1, the difference is that, high water absorption
25 parts of resin are substituted for 30 parts of attapulgite clay, remaining is same as Example 1, the desiccant being prepared, and are 25 in temperature
DEG C, when relative humidity is respectively 30%, 60%, 90%, hydroscopicity is declined compared to embodiment 1, and deoxidation effectiveness, water conservation
Rate decreases, and for other opposite comparative examples, the present embodiment hydroscopicity, water retention are minimum, therefore add super absorbent resin
Rouge can significantly improve the hydroscopicity and water retention of desiccant.
Comparative example 3 provides a kind of desiccant preparation method, compared with Example 1, the difference is that, it is each to change desiccant
Step relevant parameter, the desiccant being prepared are 25 DEG C, when relative humidity is respectively 30%, 60%, 90% in temperature, hydroscopicity
Declined compared to embodiment 1, and deoxidation effectiveness, water retention decrease, shows desiccant preparation process of the present invention
In each step relevant parameter it is reasonable, the hydroscopicity, DNA vaccine, water retention of desiccant can be effectively improved.
Comparative example 4 provides a kind of desiccant preparation method, compared with Example 1, the difference is that, cellulose graft third
In the preparation process of olefin(e) acid high hydroscopic resin, in step 2 into reaction kettle be added through in sodium hydroxide and cross and degree of neutralization be
70% monomeric acrylic is substituted for the monomeric acrylic without neutralization, remaining is same as Example 1, the drying being prepared
Agent, temperature be 25 DEG C, when relative humidity is respectively 30%, 60%, 90%, hydroscopicity, water retention compared to embodiment 1 decline compared with
To be obvious, and hydroscopicity, water retention are only better than comparative example 2, it follows that being prepared into after neutralizing by monomeric acrylic
The desiccant of the high hydroscopic resin arrived, preparation can significantly improve hydroscopicity and water retention.
Desiccant provided by the invention and preparation method thereof as a result, can be realized the desiccant being prepared and possess preparation
Simple process, hydroscopicity is high, and there are no pollution to the environment, and deoxidation effect is significant, and after deoxidation moisture absorption, desiccant goes out without sepage phenomenon
It is existing；And high hydroscopic resin used in desiccant is to be prepared after waste yarn that fiber is material is recovered, to realize waste
The purpose of recycling and reusing.
Claims (8)
1. a kind of desiccant, it is characterised in that: be made of the raw material of following portions by weight: 2-5 parts of waste iron filing, anhydrous calcium chloride
10-15 parts, 1-5 parts of bamboo charcoal, 25-35 parts of high hydroscopic resin, 3-6 parts of silica.
2. a kind of desiccant according to claim 1, it is characterised in that: the waste iron filing, anhydrous calcium chloride, bamboo charcoal,
Silica partial size is 50-80 mesh.
3. a kind of desiccant according to claim 1, it is characterised in that: the high hydroscopic resin is cellulose graft third
Olefin(e) acid high hydroscopic resin.
4. a kind of desiccant according to claim 3, it is characterised in that: the cellulose graft acrylic acid super absorbent resin
The preparation method of rouge, includes the following steps:
1) it is the waste yarn of material by fiber, cleans in deionized water, and in 105 DEG C of drying in oven 2h；It will drying
Obtained waste yarn is added in the sodium hydroxide solution that mass concentration is 11g/L, heating stirring, and heating temperature is 100 DEG C,
Mixing speed is 350r/min, mixing time 1.5h, and after the completion of stirring, it is 7 that deionized water, which is rinsed to pH, is then added into
Into the sodium hydroxide of 13g/L, 3g/L sodium metasilicate and 4g/L polyphosphoric acids sodium solution, heating stirring, heating temperature is 100 DEG C,
Mixing speed is 500r/min, mixing time 2.5h, and after the completion of stirring, it is 3g/L sulfuric acid solution that mass concentration, which is added dropwise,
Until pH is 7, deionized water, which is rinsed, removes residual sulfuric acid, obtains cellulose;
2) obtained cellulose is added in reaction kettle, then potassium peroxydisulfate, ammonium ceric nitrate is added in reaction kettle, heated
Stirring, heating temperature is 100 DEG C, mixing speed 300r/min, mixing time 30min, after the completion of stirring, into reaction kettle
Be added through in sodium hydroxide and cross and degree of neutralization be 70% monomeric acrylic, sodium sulfite, acrylamide and diallyl two
Ammonio methacrylate at the uniform velocity stirs, mixing speed 400r/min, mixing time 1.5h, after the reaction was completed, crosslinking agent is added
N, N'- methylene-bisacrylamide carry out graft reaction, after reacting 5h, obtain cellulose graft acrylic acid high hydroscopic resin.
5. a kind of preparation method of desiccant described in claim 1, characterized by the following steps:
1) waste iron filing, anhydrous calcium chloride, bamboo charcoal, high hydroscopic resin, silica are added in powder stirrer and are stirred, is made
Each uniform mixed-powder of feed distribution；
2) the uniform mixed-powder of each feed distribution will be made to be input in pelletizer, after the completion of input, pelletizer starts to stir
And deionized water is added, after the completion of deionized water addition, after persistently stirring 2min, shredder bar is opened, is granulated, after granulation
Particle is spherical shape, and the spherical particle diameters after granulation are 0.5-5mm;
3) spheric granules is input in roaster dried, dry after screen, that is, the desiccant is prepared.
6. a kind of preparation method of desiccant according to claim 5, it is characterised in that: the step 1) whipping process
In, mixing speed 400-500r/min, mixing time 1-2h.
7. a kind of preparation method of desiccant according to claim 5, it is characterised in that: the step 2) whipping process
In, mixing speed is 1500-1800 r/min, and deionized water dosage is the 25-35% of mixed-powder quality, deionization addition side
Formula is spray gun addition, and lance ejection deionized water flow velocity is 20-30ml/min.
8. a kind of preparation method of desiccant according to claim 5, it is characterised in that: the step 3) dries screening
In the process, drying temperature is 100 DEG C -150 DEG C, drying time 1-1.5h, and sieve mesh number is 15-35 mesh.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110128595A (en) * | 2019-04-30 | 2019-08-16 | 宁夏 | A kind of preparation method of the degradable water-absorbing resin desiccant of antiseepage high-strength |
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