CN111068629A - Water absorbent - Google Patents
Water absorbent Download PDFInfo
- Publication number
- CN111068629A CN111068629A CN201911360440.7A CN201911360440A CN111068629A CN 111068629 A CN111068629 A CN 111068629A CN 201911360440 A CN201911360440 A CN 201911360440A CN 111068629 A CN111068629 A CN 111068629A
- Authority
- CN
- China
- Prior art keywords
- water
- particle
- parts
- size
- absorbing resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a water absorbent, which comprises the following components in parts by weight: 20-30 parts of large-particle-size water-absorbing resin, 40-50 parts of small-particle-size water-absorbing resin, 1-5 parts of inorganic nano particles, 10-15 parts of cellulose fibers and 10-20 parts of polyurethane hydrogel particles; the particle size of the large-particle-size water-absorbent resin is 1-3 mm; the particle size of the small-particle-size water-absorbing resin is 300-500 mu m; the length of the cellulose fiber is 5-10 μm. The water absorbent of the invention has excellent water absorption performance, good elasticity after water absorption and small occupied space.
Description
Technical Field
The present invention relates to a water absorbing agent.
Background
As the water absorbing agent, it is required to exhibit good physical properties (centrifugal water retention capacity, saline flow conductivity, water absorption under pressure, fixed high absorption capacity, mass average particle size, liquid diffusibility, and the like). Although a plurality of water absorbents are available in the market at present, the water absorption effect is not ideal, the water absorbents are packaged into a fixed specification, the volume of the water absorbents is increased after resin in the water absorbents absorbs water and expands, large gaps exist among the mutually extruded resin, and the extrusion force between particles is large.
Disclosure of Invention
In order to solve the above-mentioned problems, it is an object of the present invention to provide a water-absorbing agent which is excellent in water-absorbing performance, has good elasticity after absorbing water, and occupies a small space.
The water absorbent comprises the following components in parts by weight: 20-30 parts of large-particle-size water-absorbing resin, 40-50 parts of small-particle-size water-absorbing resin, 1-5 parts of inorganic nano particles, 10-15 parts of cellulose fibers and 10-20 parts of polyurethane hydrogel particles; the particle size of the large-particle-size water-absorbent resin is 1-3 mm; the particle size of the small-particle-size water-absorbing resin is 300-500 mu m; the length of the cellulose fiber is 5-10 μm.
Further, the large-particle-diameter water-absorbent resin is polyacrylic acid water-absorbent resin, and is spherical.
Further, polyacrylic acid water-absorbent resin is synthesized by adopting a reversed phase suspension method. The preparation method thereof refers to the' reversed phase suspension method for synthesizing large-particle bead-shaped super absorbent polymer and the performance research thereof, Chinese adhesive, 2008,17 (11): 16-19', the polyacrylic acid water-absorbing resin has large particle size and high water absorption rate.
Further, the small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 20-30% of the mass fraction of the small-particle-size water-absorbing resin, and the acrylic acid accounts for 70-80% of the mass fraction of the small-particle-size water-absorbing resin.
Further, the inorganic nanoparticles are silica nanoparticles. The addition of the inorganic nanoparticles plays a role in lubricating the resin particles in the water absorbent in a dry state. The dispersion uniformity of the resin particles is improved.
Further, the particle size of the inorganic nanoparticles was 100-500 nm.
Further, the cellulose fiber is one or more of methyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose.
Further, the particle diameter of the polyurethane hydrogel particle is 5 to 10 μm.
Further, the polyurethane hydrogel particles include a polyurethaneurea polymer therein. The preparation method is described in the following references "Non-coherent Interaction cooperative Induced structure, gauge and Stimuli-Responsive Polyurethane-Urea superior (PUUS) Hydrogels, J.Mater.Chem.B,2015, 3 (14)". The water content of the polyurethane urea polymer can reach 92%, and the polyurethane urea polymer has high mechanical strength and elasticity after completely absorbing water and swelling. Under the stress state, the water absorbent can provide better buffering property for the water absorbent.
Further, the water absorbing agent comprises the following components in parts by weight: 25-30 parts of large-particle-size water-absorbing resin, 40-45 parts of small-particle-size water-absorbing resin, 3-5 parts of inorganic nanoparticles, 10-15 parts of cellulose fibers and 15-20 parts of polyurethane hydrogel particles.
By the scheme, the invention at least has the following advantages:
according to the invention, the water-absorbing resins with different particle sizes are arranged, and after water absorption, the water-absorbing resin with small particle size is filled into gaps among the water-absorbing resins with large particle size, so that the space occupied by the water absorbent is saved. And the cellulose fiber with good water absorption performance is used as an auxiliary material, and the micron-sized fiber can also be filled into gaps among the water absorbent resins with large particle sizes, so that the space occupied by the water absorbent is further reduced. The polyurethane hydrogel particles are used, so that the water absorbent has better buffering property in a stressed state after water absorption and expansion.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a preferred embodiment of the present invention and is described in detail below.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the following examples of the present invention, polyacrylic acid water-absorbent resin was synthesized by a reversed phase suspension method. The preparation method thereof refers to the' reversed phase suspension method for synthesizing large-particle bead-shaped super absorbent polymer and the performance research thereof, Chinese adhesive, 2008,17 (11): 16-19". Polyurethane hydrogel particles include Polyurethane Urea polymers, and the preparation method thereof is described in the references "Non-covalent Interaction cooperative Induced structure, gauge and stuck-reactive Polyurethane-Urea superior (PUUS) Hydrogels, J.Mater.chem.B., 2015, 3 (14)".
Example 1
A water absorbent comprises the following components in parts by weight:
20 parts of large-particle-size water-absorbing resin, 40 parts of small-particle-size water-absorbing resin, 1 part of inorganic nano particles, 10 parts of cellulose fibers and 10 parts of polyurethane hydrogel particles.
Wherein, the large-particle-size water-absorbing resin is polyacrylic acid water-absorbing resin which is spherical and has an average particle size of 1.5 mm. The small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 20% of the mass fraction of the small-particle-size water-absorbing resin, the acrylic acid accounts for 80% of the mass fraction of the small-particle-size water-absorbing resin, and the average particle size of the small-particle-size water-absorbing resin is 300 microns. The inorganic nanoparticles are silica nanoparticles having an average particle diameter of 150 nm. The length of the cellulose fibers was 5 μm. The cellulose fiber is methyl cellulose. The particle size of the polyurethane hydrogel particles was 5 μm.
Example 2
A water absorbent comprises the following components in parts by weight:
25 parts of large-particle-size water-absorbing resin, 45 parts of small-particle-size water-absorbing resin, 2 parts of inorganic nanoparticles, 12 parts of cellulose fibers and 15 parts of polyurethane hydrogel particles.
Wherein, the large-particle-size water-absorbing resin is polyacrylic acid water-absorbing resin which is spherical and has an average particle size of 2.5 mm. The small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 25% of the mass fraction of the small-particle-size water-absorbing resin, the acrylic acid accounts for 75% of the mass fraction of the small-particle-size water-absorbing resin, and the average particle size of the small-particle-size water-absorbing resin is 400 microns. The inorganic nanoparticles are silica nanoparticles, the average particle size of which is 200 nm. The length of the cellulose fibers was 7 μm. The cellulose fiber is methyl cellulose. The particle size of the polyurethane hydrogel particles was 7 μm.
Example 3
A water absorbent comprises the following components in parts by weight:
20 parts of large-particle-size water-absorbing resin, 40 parts of small-particle-size water-absorbing resin, 5 parts of inorganic nano particles, 10 parts of cellulose fibers and 18 parts of polyurethane hydrogel particles.
Wherein, the large-particle-size water-absorbing resin is polyacrylic acid water-absorbing resin which is spherical and has an average particle size of 1.5 mm. The small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 20% of the mass fraction of the small-particle-size water-absorbing resin, the acrylic acid accounts for 80% of the mass fraction of the small-particle-size water-absorbing resin, and the average particle size of the small-particle-size water-absorbing resin is 300 microns. The inorganic nanoparticles are silica nanoparticles having an average particle diameter of 150 nm. The length of the cellulose fibers was 5 μm. The cellulose fiber is hydroxyethyl cellulose. The particle size of the polyurethane hydrogel particles was 10 μm.
Example 4
A water absorbent comprises the following components in parts by weight:
30 parts of large-particle-size water-absorbing resin, 50 parts of small-particle-size water-absorbing resin, 5 parts of inorganic nano particles, 14 parts of cellulose fibers and 16 parts of polyurethane hydrogel particles.
Wherein, the large-particle-size water-absorbing resin is polyacrylic acid water-absorbing resin which is spherical and has an average particle size of 3 mm. The small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 20% of the mass fraction of the small-particle-size water-absorbing resin, the acrylic acid accounts for 80% of the mass fraction of the small-particle-size water-absorbing resin, and the average particle size of the small-particle-size water-absorbing resin is 500 microns. The inorganic nanoparticles are silica nanoparticles, and the average particle size of the inorganic nanoparticles is 450 nm. The length of the cellulose fibers was 10 μm. The cellulose fiber is methyl cellulose. The particle size of the polyurethane hydrogel particles was 5 μm.
The water absorbing capacity of the water absorbing agent was measured, and the water content and the compressive strength after water absorption equilibrium were calculated, and the results are shown in table 1. The result shows that the water absorbent has good water absorption performance and good elasticity.
TABLE 1 results of Performance tests of various water absorbents
| Examples | Water content (%) | Compressive Strength (MPa) |
| Example 1 | 99.2％ | 85 |
| Example 2 | 99.0％ | 90 |
| Example 3 | 98.1％ | 92 |
| Example 4 | 99.5％ | 93 |
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The water absorbent is characterized by comprising the following components in parts by weight: 20-30 parts of large-particle-size water-absorbing resin, 40-50 parts of small-particle-size water-absorbing resin, 1-5 parts of inorganic nano particles, 10-15 parts of cellulose fibers and 10-20 parts of polyurethane hydrogel particles; the particle size of the large-particle-size water-absorbent resin is 1-3 mm; the particle size of the small-particle-size water-absorbing resin is 300-500 mu m; the length of the cellulose fiber is 5-10 μm.
2. The water absorbing agent of claim 1, wherein: the large-particle-size water-absorbent resin is polyacrylic acid water-absorbent resin and is spherical.
3. The water absorbing agent of claim 2, wherein: the polyacrylic acid water-absorbing resin is synthesized by adopting a reversed phase suspension method.
4. The water absorbing agent of claim 1, wherein: the small-particle-size water-absorbing resin is a copolymer of vinyl alcohol and acrylic acid, wherein the vinyl alcohol accounts for 20-30% of the mass fraction of the small-particle-size water-absorbing resin, and the acrylic acid accounts for 70-80% of the mass fraction of the small-particle-size water-absorbing resin.
5. The water absorbing agent of claim 1, wherein: the inorganic nanoparticles are silica nanoparticles.
6. The water absorbing agent of claim 1, wherein: the particle size of the inorganic nanoparticles is 100-500 nm.
7. The water absorbing agent of claim 1, wherein: the cellulose fiber is one or more of methyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose.
8. The water absorbing agent of claim 1, wherein: the particle size of the polyurethane hydrogel particles is 5-10 μm.
9. The water absorbing agent of claim 1, wherein: the polyurethane hydrogel particles include a polyurethaneurea polymer.
10. The water absorbing agent as set forth in any one of claims 1 to 9, comprising the following components in parts by weight: 25-30 parts of large-particle-size water-absorbing resin, 40-45 parts of small-particle-size water-absorbing resin, 3-5 parts of inorganic nanoparticles, 10-15 parts of cellulose fibers and 15-20 parts of polyurethane hydrogel particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360440.7A CN111068629A (en) | 2019-12-25 | 2019-12-25 | Water absorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360440.7A CN111068629A (en) | 2019-12-25 | 2019-12-25 | Water absorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111068629A true CN111068629A (en) | 2020-04-28 |
Family
ID=70318011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360440.7A Withdrawn CN111068629A (en) | 2019-12-25 | 2019-12-25 | Water absorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111068629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022254323A1 (en) * | 2021-06-01 | 2022-12-08 | Rhodia Brasil S.A | Water absorbent composite, process for preparing and uses |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06248187A (en) * | 1993-02-24 | 1994-09-06 | Sanyo Chem Ind Ltd | Water absorbent |
| CN1093932A (en) * | 1993-02-24 | 1994-10-26 | 三洋化成工业株式会社 | Water absorbing agent and absorbent material |
| JPH09324119A (en) * | 1995-05-31 | 1997-12-16 | Sanyo Chem Ind Ltd | Urethane resin composition, water absorbing material and moisture absorbing and reliesing material |
| EP0844270A1 (en) * | 1996-11-20 | 1998-05-27 | Sanyo Chemical Industries, Ltd. | Water absorbing agent and method of producing the same |
| CN1261008A (en) * | 1998-11-17 | 2000-07-26 | 三洋化成工业株式会社 | Water absorbing agent and preparing method thereof |
| US6156678A (en) * | 1996-11-06 | 2000-12-05 | Sanyo Chemical Industries, Ltd. | Water absorbing agent absorbent material |
| CN102766313A (en) * | 2012-06-29 | 2012-11-07 | 占协琼 | Water absorbent |
| CN105733149A (en) * | 2015-11-26 | 2016-07-06 | 孙典学 | Liquid-absorption composite material |
-
2019
- 2019-12-25 CN CN201911360440.7A patent/CN111068629A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06248187A (en) * | 1993-02-24 | 1994-09-06 | Sanyo Chem Ind Ltd | Water absorbent |
| CN1093932A (en) * | 1993-02-24 | 1994-10-26 | 三洋化成工业株式会社 | Water absorbing agent and absorbent material |
| JPH09324119A (en) * | 1995-05-31 | 1997-12-16 | Sanyo Chem Ind Ltd | Urethane resin composition, water absorbing material and moisture absorbing and reliesing material |
| US6156678A (en) * | 1996-11-06 | 2000-12-05 | Sanyo Chemical Industries, Ltd. | Water absorbing agent absorbent material |
| EP0844270A1 (en) * | 1996-11-20 | 1998-05-27 | Sanyo Chemical Industries, Ltd. | Water absorbing agent and method of producing the same |
| CN1261008A (en) * | 1998-11-17 | 2000-07-26 | 三洋化成工业株式会社 | Water absorbing agent and preparing method thereof |
| CN102766313A (en) * | 2012-06-29 | 2012-11-07 | 占协琼 | Water absorbent |
| CN105733149A (en) * | 2015-11-26 | 2016-07-06 | 孙典学 | Liquid-absorption composite material |
Non-Patent Citations (1)
| Title |
|---|
| 周爱军等: "水性聚氨酯改性高吸水剂的制备与性能", 《武汉工程大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022254323A1 (en) * | 2021-06-01 | 2022-12-08 | Rhodia Brasil S.A | Water absorbent composite, process for preparing and uses |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW384320B (en) | Polysaccharide fibers, method of producing the polysaccharide fibers and absorbent structure including the same | |
| Finlay et al. | Biologically based fiber-reinforced/clay aerogel composites | |
| Lin et al. | In situ polymerization approach to cellulose–polyacrylamide interpenetrating network hydrogel with high strength and pH-responsive properties | |
| Sehaqui et al. | High-porosity aerogels of high specific surface area prepared from nanofibrillated cellulose (NFC) | |
| Mahfoudhi et al. | Poly (acrylic acid-co-acrylamide)/cellulose nanofibrils nanocomposite hydrogels: effects of CNFs content on the hydrogel properties | |
| Taşdelen et al. | Preparation of N-isopropylacrylamide/itaconic acid/Pumice highly swollen composite hydrogels to explore their removal capacity of methylene blue | |
| Meng et al. | Synthesis and swelling property of superabsorbent starch grafted with acrylic acid/2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid | |
| Yu et al. | Study of carboxymethyl chitosan based polyampholyte superabsorbent polymer I: optimization of synthesis conditions and pH sensitive property study of carboxymethyl chitosan-g-poly (acrylic acid-co-dimethyldiallylammonium chloride) superabsorbent polymer | |
| Hossen et al. | Wet stable and mechanically robust cellulose nanofibrils (CNF) based hydrogel | |
| CN111068629A (en) | Water absorbent | |
| JP2014514336A5 (en) | ||
| JP2008142714A5 (en) | ||
| Zhang et al. | Multiscale kapok/cellulose aerogels for oil absorption: The study on structure and oil absorption properties | |
| SA517380686B1 (en) | Water-Absorbent Resin and Absorbent Article | |
| JP6234358B2 (en) | Biodegradable water absorbent | |
| EP2838939A1 (en) | Compounded surface treated carboxyalkylated starch polycrylate composites | |
| US11618005B2 (en) | Hygroscopic material | |
| KR100364343B1 (en) | Thin sanitary products with prefabricated absorbers | |
| Antosik et al. | Influence of carrier fluid on the electrokinetic and rheological properties of shear thickening fluids | |
| Sultan et al. | Cellulose-based hydrogels as smart, green and controllable nitrogenous fertilizers releasing agents | |
| Ma et al. | Preparation and characterization of water‐absorbing polyurethane foam composites with microsized sodium polyacrylate particles | |
| Li et al. | Regenerated cellulose microgel: A promising reinforcing agent and gelator for soft matter | |
| CN110964481B (en) | Shear thickening fluid, preparation method and application thereof, damping part and energy absorption device comprising shear thickening fluid | |
| CN103866606A (en) | Paper additive with high water holding capacity and preparation method thereof | |
| JP2008279366A5 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200428 |