CN112005895A - High-water-absorptivity cat litter and preparation method thereof - Google Patents
High-water-absorptivity cat litter and preparation method thereof Download PDFInfo
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- CN112005895A CN112005895A CN202010968716.6A CN202010968716A CN112005895A CN 112005895 A CN112005895 A CN 112005895A CN 202010968716 A CN202010968716 A CN 202010968716A CN 112005895 A CN112005895 A CN 112005895A
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- 241000282326 Felis catus Species 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title description 7
- 241000609240 Ambelania acida Species 0.000 claims abstract description 78
- 239000010905 bagasse Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 241000196324 Embryophyta Species 0.000 claims abstract description 28
- 239000002250 absorbent Substances 0.000 claims abstract description 28
- 230000002745 absorbent Effects 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 240000008042 Zea mays Species 0.000 claims abstract description 22
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 22
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 22
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000005822 corn Nutrition 0.000 claims abstract description 22
- 235000013312 flour Nutrition 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 238000012216 screening Methods 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 11
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 6
- 238000010559 graft polymerization reaction Methods 0.000 claims abstract description 6
- 239000003999 initiator Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 20
- 229920002907 Guar gum Polymers 0.000 claims description 10
- 239000000665 guar gum Substances 0.000 claims description 10
- 229960002154 guar gum Drugs 0.000 claims description 10
- 235000010417 guar gum Nutrition 0.000 claims description 10
- 239000001814 pectin Substances 0.000 claims description 10
- 229920001277 pectin Polymers 0.000 claims description 10
- 235000010987 pectin Nutrition 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 229920000881 Modified starch Polymers 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 230000001788 irregular Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000010411 cooking Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 240000004507 Abelmoschus esculentus Species 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 8
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 240000000111 Saccharum officinarum Species 0.000 abstract description 2
- 235000007201 Saccharum officinarum Nutrition 0.000 abstract description 2
- 235000009508 confectionery Nutrition 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 36
- 241001075517 Abelmoschus Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 235000017771 Acacia greggii Nutrition 0.000 description 5
- 240000004859 Gamochaeta purpurea Species 0.000 description 5
- 235000011755 Nepeta hederacea Nutrition 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 5
- 210000002345 respiratory system Anatomy 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 235000013527 bean curd Nutrition 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0154—Litter comprising inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0155—Litter comprising organic material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
The invention provides a high-water-absorptivity cat litter which is prepared by mixing the following components in parts by weight, molding, cooling, crushing and screening: 50-80 parts of bagasse modified super absorbent resin, 10-20 parts of corn flour, 1-5 parts of natural plant binder, 1-5 parts of silicon dioxide, 2-8 parts of activated carbon and water, wherein the amount of the water accounts for 12-18% of the total mass of the mixed materials; the bagasse modified super absorbent resin is synthesized by carrying out alkaline high-temperature pretreatment on bagasse, then taking the bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene bisacrylamide as a cross-linking agent and adopting a solution graft polymerization method. The cat litter has the advantages of small dust amount, high water absorption performance, effective odor absorption, excellent agglomeration performance, natural sweet aroma of sugarcane, pleasant smell, comfortable foot feeling, and natural environment-friendliness and safety.
Description
Technical Field
The invention relates to a cleaning product for pet excrement, in particular to cat litter special for pet cats and a preparation method thereof.
Background
With the improvement of living standard and rhythm, the pet feeding in the modern society has become a fashion. Pets are puzzled in the aspect of disposing of excrement while bringing joy to owners, and the quality requirements of related products are widely concerned by people.
The cat litter is a detergent for treating cat excrement, and is required to have good water absorption, caking property and adsorbability, and is generally used together with a cat litter box. With the gradual urbanization of the population and the new fashion of pet feeding, the cat is necessary to live in cities with the cat owner, and then the cat litter becomes a necessity of life. After decades of research and development, cat litter is commonly available in the market and mainly comprises the following components: bentonite cat litter, silica gel cat litter, sawdust cat litter, paper-scrap cat litter, tofu cat litter, and the like. The bentonite cat litter has good water absorption and caking property but cannot be flushed into a toilet bowl, and the cat has harm and poor deodorization property when eating by mistake; the silica gel cat litter has super-strong absorption capacity, is convenient to clean in time, but has heavy peculiar smell and is easy to cause harm when being eaten by mistake; the wood chip cat litter is natural and non-irritant, has good adsorption performance, is easy to damp, and is easy to generate parasitic fleas and the like; the paper scrap cat litter is soft and small in particle, is gray after being wetted by urine, is well recognized and can be directly poured into a closestool for flushing, but has poor water absorption and caking property; the bean curd cat litter is good in water absorption and caking property, but is easy to stick to the bottom, so that the cleaning is inconvenient, and the adsorption is general. Brings great trouble to the consumers in selection.
Bagasse is a main byproduct of the sugar industry, and is an important renewable biomass energy source. China is the third major sugar cane-growing country next to brazil and india. Because the bagasse is difficult to recycle due to high lignification degree, the traditional bagasse is often discarded or used as fuel, the utilization rate is low, and not only is the waste of resources caused, but also serious environmental pollution is caused.
In order to more effectively utilize the sugar resource waste, the bagasse is used for more optimal development of the cat litter product. The bagasse has good water absorption, caking property, adsorbability and convenient treatment by utilizing the good natural property of the bagasse per se and adding proper modification, and can be directly flushed away by a toilet bowl. Provides a new direction in the aspect of comprehensive utilization of sugar resources, and well solves the problem of redevelopment of sugar industry waste.
Disclosure of Invention
The invention aims to provide the high-water-absorptivity cat litter which is low in dust amount, high in water-absorbing performance, capable of effectively absorbing odor, excellent in agglomeration performance, pleasant in smell, comfortable in foot feel, natural, environment-friendly and safe, and has the fresh and sweet fragrance of natural sugarcane.
The technical problem of the invention is realized by the following technical scheme:
the high-water-absorptivity cat litter is prepared by mixing the following components in parts by weight, molding, cooling, crushing and screening: 50-80 parts of bagasse modified super absorbent resin, 10-20 parts of corn flour, 1-5 parts of natural plant binder, 1-5 parts of silicon dioxide, 2-8 parts of activated carbon and water, wherein the amount of the water accounts for 12-18% of the total mass of the mixed materials;
the bagasse modified high-water-absorptivity resin is prepared by the method comprising the following steps:
s1, preprocessing bagasse: placing bagasse in an alkaline high-temperature environment for cooking, drying after pretreatment, and crushing; the pretreatment conditions are as follows: NaOH aqueous solution with the alkaline environment of 3-5 mol/L is adopted, the temperature is 110-120 ℃, and the time is 1-1.5 h;
s2, modifying the bagasse powder obtained in the step S1 to prepare a super absorbent resin: the method comprises the following steps of synthesizing the super absorbent resin by using bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene-bisacrylamide as a cross-linking agent through a solution graft polymerization method; the modification conditions are as follows: the neutralization degree of acrylic acid and an alkali solution is 60-75%, the mass ratio of ammonium persulfate to bagasse is 10-15%, the mass ratio of N, N' -methylene bisacrylamide to bagasse is 3-6%, the mass ratio of acrylic acid to bagasse is 8-15%, and the mass ratio of kaolin to bagasse is 3-6%, so that the water absorption capacity of the super absorbent resin prepared according to the optimal proportion is 450-556 g/g.
Preferably, the grain size of the bagasse is 80-100 meshes, and the too coarse grain size of the bagasse determines that the cat litter is not easy to be pressed and formed in the preparation process, and the too fine grain size of the bagasse determines that dust is easy to generate in the processing process.
Preferably, the corn flour is a mixture of common corn flour and modified corn starch, and the mass ratio of the common corn flour to the modified corn starch is 0.49-0.54. The corn flour component can improve the caking property of the cat litter after absorbing water.
Preferably, the natural plant binder is a mixture of guar gum and okra pectin, and the mass ratio of the guar gum to the okra pectin is 1: 1-5. The natural plant binder adopted by the invention has a good binding effect, is not easy to generate dust, protects the respiratory system of the cat, and simultaneously ensures the natural safety of cat litter products.
Preferably, the activated carbon is a plant activated carbon. The natural plant active carbon has more acidic functional group structures on the surface, and has better adsorption effect on peculiar smell.
The high-water-absorptivity cat litter is prepared by the following steps:
(1) preparing materials: fully mixing the bagasse modified super absorbent resin, corn flour, a natural plant binder, silicon dioxide, activated carbon and water;
(2) molding: placing the mixed materials in a forming device to obtain a cylindrical formed product;
(3) and (3) cooling: spreading the formed product on the ground until the formed product is cooled to room temperature so as to stably keep the shape of the formed product;
(4) crushing: crushing the cooled formed product by a crusher, and forming an irregular cylinder after crushing the formed product;
(5) screening: and screening the crushed molding product, wherein particles with the particle size of 2-2.5 mm and the length of 10-20 mm are screened. The cat litter particles of this size conform to the cat-paw gap, the cat foot feels comfortable, and the caking strength is good.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention pretreats the bagasse which is a byproduct in sugar industry, can destroy lignin in the bagasse and destroy the microstructure of the bagasse to a certain extent by high-temperature treatment under the alkaline condition, so that the bagasse fiber is loose, the specific surface area of the fiber is increased, and then the bagasse is modified into high polymer, the internal structure of the bagasse fiber is further changed, the internal structure of the fiber is looser and more porous, thereby being beneficial to the improvement of water absorption performance and agglomeration performance after water absorption and being beneficial to the absorption of peculiar smell. The finally prepared cat litter has high water absorption performance, can quickly absorb mucus of the cat and water in excrement, has better caking performance, and can effectively absorb odor.
(2) The corn flour component in the cat litter can increase the caking property of the cat litter after absorbing water.
(3) The silica in the cat litter can contribute to the anti-caking property of the cat litter product, and ensure the quality, the storage period and the like of the unused cat litter.
(4) The activated carbon in the cat litter is selected from natural plant activated carbon with more acidic functional group structures on the surface, and has better adsorption effect on peculiar smell.
(5) The composite adhesive disclosed by the invention adopts a natural plant adhesive, is good in adhesive effect, is not easy to generate dust, protects the respiratory system of the cat, and simultaneously ensures the natural safety of cat litter products.
(6) The cat litter is an irregular cylinder, the particle size is 2-2.5 mm, the particle length is 10-20 mm, the cat litter particles with the particle size conform to the cat paw gap, the cat foot feels comfortable, and the caking strength is good.
(7) The cat litter has great superiority in cleaning, can be directly flushed into a toilet bowl, and cannot block the toilet bowl.
Detailed Description
Example 1: preparation of high water absorption cat litter
Firstly, preparing bagasse modified high water absorption resin, comprising the following steps:
s1, crushing bagasse, which is a byproduct in sugar industry, to 80 meshes, and pretreating the bagasse: placing bagasse in an alkaline high-temperature environment for cooking, drying after pretreatment, and crushing; the pretreatment conditions are as follows: NaOH aqueous solution with 3mol/L alkaline environment, the temperature is 110 ℃, and the time is 60 min;
s2, modifying the bagasse powder obtained in the step S1 to prepare a super absorbent resin: the method comprises the following steps of synthesizing the super absorbent resin by using bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene-bisacrylamide as a cross-linking agent through a solution graft polymerization method; the modification conditions are as follows: acrylic acid is neutralized by sodium hydroxide aqueous solution until the neutralization degree is 60%, the mass ratio of ammonium persulfate to bagasse is 10%, the mass ratio of N, N' -methylene bisacrylamide to bagasse is 3%, the mass ratio of acrylic acid to bagasse is 8%, and the mass ratio of kaolin to bagasse is 3%, so that the water absorption capacity of the super absorbent resin prepared by the mixture ratio is 450 g/g.
(II) preparing the high water absorption cat litter, which comprises the following steps:
(1) preparing materials: preparing the following components in parts by weight:
50 parts of bagasse modified super absorbent resin;
corn flour: common corn flour 3.3 parts and modified corn starch 6.7 parts, which account for 10 parts;
natural plant binder: 1 part of guar gum and okra pectin, wherein the mass ratio of the guar gum to the okra pectin is 1: 1;
1 part of silicon dioxide;
2 parts of natural plant activated carbon;
water: the using amount of water accounts for 12% of the total mass of the mixed materials;
the bagasse modified super absorbent resin, corn flour, natural plant binder, silicon dioxide, activated carbon and water are fully mixed.
(2) Molding: placing the mixed materials in a forming device to obtain a cylindrical formed product; the pellets were obtained by means of a YC100L-4 model pelletizer to obtain a cylindrical molded product having a suitable shape and compactness.
(3) And (3) cooling: the molded product was laid on the ground until cooled to room temperature to stably maintain its shape.
(4) Crushing: and crushing the cooled formed product by using a crusher, and forming an irregular cylinder after crushing the formed product.
(5) Screening: and screening the crushed molding product, wherein particles with the particle size of 2-2.5 mm and the length of 10-20 mm are screened. The cat litter particles of this size conform to the cat-paw gap, the cat foot feels comfortable, and the caking strength is good.
The cat litter prepared by the method can absorb water which is 5-6 times of the weight of the cat litter, can meet the water absorption capacity of high-quality cat litter on the market at present without adding water absorbing materials, and is better than common plant cat litter. The adopted natural plant binder has good binding effect, is not easy to generate dust, protects the respiratory system of the cat, and simultaneously ensures the natural safety of the prepared cat litter product.
Example 2: preparation of high water absorption cat litter
Firstly, preparing bagasse modified high water absorption resin, comprising the following steps:
s1, crushing bagasse, which is a byproduct in sugar industry, to 100 meshes, and pretreating the bagasse: placing bagasse in an alkaline high-temperature environment for cooking, drying after pretreatment, and crushing; the pretreatment conditions are as follows: NaOH aqueous solution with alkaline environment of 5mol/L, the temperature is 120 ℃, and the time is 90 min;
s2, modifying the bagasse powder obtained in the step S1 to prepare a super absorbent resin: the method comprises the following steps of synthesizing the super absorbent resin by using bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene-bisacrylamide as a cross-linking agent through a solution graft polymerization method; the modification conditions are as follows: acrylic acid is neutralized by sodium hydroxide aqueous solution until the neutralization degree is 75%, the mass ratio of ammonium persulfate to bagasse is 15%, the mass ratio of N, N' -methylene bisacrylamide to bagasse is 6%, the mass ratio of acrylic acid to bagasse is 15%, and the mass ratio of kaolin to bagasse is 6%, so that the water absorption capacity of the super absorbent resin prepared by the mixture ratio is 500 g/g.
(II) preparing the high water absorption cat litter, which comprises the following steps:
(1) preparing materials: preparing the following components in parts by weight:
80 parts of bagasse modified super absorbent resin;
corn flour: 20 parts of common corn flour 7 parts and modified corn starch 13 parts;
natural plant binder: 5 parts of guar gum and okra pectin, wherein the mass ratio of the guar gum to the okra pectin is 1: 5;
5 parts of silicon dioxide;
8 parts of natural plant activated carbon;
water: the using amount of water accounts for 18 percent of the total mass of the mixed materials;
the bagasse modified super absorbent resin, corn flour, natural plant binder, silicon dioxide, activated carbon and water are fully mixed.
(2) Molding: placing the mixed materials in a forming device to obtain a cylindrical formed product; the pellets were obtained by means of a YC100L-4 model pelletizer to obtain a cylindrical molded product having a suitable shape and compactness.
(3) And (3) cooling: the molded product was laid on the ground until cooled to room temperature to stably maintain its shape.
(4) Crushing: and crushing the cooled formed product by using a crusher, and forming an irregular cylinder after crushing the formed product.
(5) Screening: and screening the crushed molding product, wherein particles with the particle size of 2-2.5 mm and the length of 10-20 mm are screened. The cat litter particles of this size conform to the cat-paw gap, the cat foot feels comfortable, and the caking strength is good.
The cat litter prepared by the method can absorb water which is 5-6 times of the weight of the cat litter, can meet the water absorption capacity of high-quality cat litter on the market at present without adding water absorbing materials, and is better than common plant cat litter. The adopted natural plant binder has good binding effect, is not easy to generate dust, protects the respiratory system of the cat, and simultaneously ensures the natural safety of the prepared cat litter product.
Example 3: preparation of high water absorption cat litter
Firstly, preparing bagasse modified high water absorption resin, comprising the following steps:
s1, crushing bagasse, which is a byproduct in sugar industry, to 90 meshes, and pretreating the bagasse: placing bagasse in an alkaline high-temperature environment for cooking, drying after pretreatment, and crushing; the pretreatment conditions are as follows: NaOH aqueous solution with 4mol/L alkaline environment, the temperature is 115 ℃, and the time is 70 min;
s2, modifying the bagasse powder obtained in the step S1 to prepare a super absorbent resin: the method comprises the following steps of synthesizing the super absorbent resin by using bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene-bisacrylamide as a cross-linking agent through a solution graft polymerization method; the modification conditions are as follows: acrylic acid is neutralized by sodium hydroxide aqueous solution until the neutralization degree is 65%, the mass ratio of ammonium persulfate to bagasse is 12%, the mass ratio of N, N' -methylene bisacrylamide to bagasse is 5%, the mass ratio of acrylic acid to bagasse is 11%, and the mass ratio of kaolin to bagasse is 4%, so that the water absorption capacity of the super absorbent resin prepared by the mixture ratio is 556 g/g.
(II) preparing the high water absorption cat litter, which comprises the following steps:
(1) preparing materials: preparing the following components in parts by weight:
70 parts of bagasse modified super absorbent resin;
corn flour: 15 parts of common corn flour and 10 parts of modified corn starch;
natural plant binder: 3 parts of guar gum and okra pectin, wherein the mass ratio of the guar gum to the okra pectin is 1: 3;
3 parts of silicon dioxide;
6 parts of natural plant activated carbon;
water: the using amount of water accounts for 15% of the total mass of the mixed materials;
the bagasse modified super absorbent resin, corn flour, natural plant binder, silicon dioxide, activated carbon and water are fully mixed.
(2) Molding: placing the mixed materials in a forming device to obtain a cylindrical formed product; the pellets were obtained by means of a YC100L-4 model pelletizer to obtain a cylindrical molded product having a suitable shape and compactness.
(3) And (3) cooling: the molded product was laid on the ground until cooled to room temperature to stably maintain its shape.
(4) Crushing: and crushing the cooled formed product by using a crusher, and forming an irregular cylinder after crushing the formed product.
(5) Screening: and screening the crushed molding product, wherein particles with the particle size of 2-2.5 mm and the length of 10-20 mm are screened. The cat litter particles of this size conform to the cat-paw gap, the cat foot feels comfortable, and the caking strength is good.
The cat litter prepared by the method can absorb water which is 6-7 times of the weight of the cat litter, can meet the water absorption capacity of high-quality cat litter on the market at present without adding water absorbing materials, and is better than common plant cat litter. The adopted natural plant binder has good binding effect, is not easy to generate dust, protects the respiratory system of the cat, and simultaneously ensures the natural safety of the prepared cat litter product.
Performance comparison of the Cat litters prepared in examples 1-3 with commercial Cat litters
The urine absorption performance calculation formula is as follows:
in the formula: m represents the weight g of the product after completely absorbing urine of the pet cat; m represents the weight g of the product without absorbing urine from pet cats.
Table 1 comparison of performance of cat litter made in example 1 with commercial cat litter
Table 2 comparison of performance of cat litter made in example 2 with commercial cat litter
Table 3 comparison of performance of cat litter made in example 3 with commercial cat litter
Claims (6)
1. The high-water-absorptivity cat litter is characterized by being prepared by mixing the following components in parts by weight, molding, cooling, crushing and screening: 50-80 parts of bagasse modified super absorbent resin, 10-20 parts of corn flour, 1-5 parts of natural plant binder, 1-5 parts of silicon dioxide, 2-8 parts of activated carbon and water, wherein the amount of the water accounts for 12-18% of the total mass of the mixed materials;
the bagasse modified high-water-absorptivity resin is prepared by the method comprising the following steps:
s1, preprocessing bagasse: placing bagasse in an alkaline high-temperature environment for cooking, drying after pretreatment, and crushing; the pretreatment conditions are as follows: NaOH aqueous solution with the alkaline environment of 3-5 mol/L is adopted, the temperature is 110-120 ℃, and the time is 1-1.5 h;
s2, modifying the bagasse powder obtained in the step S1 to prepare a super absorbent resin: the method comprises the following steps of synthesizing the super absorbent resin by using bagasse, kaolin and acrylic acid as main raw materials, ammonium persulfate as an initiator and N, N' -methylene-bisacrylamide as a cross-linking agent through a solution graft polymerization method; the modification conditions are as follows: the neutralization degree of acrylic acid and an alkali solution is 60-75%, the mass ratio of ammonium persulfate to bagasse is 10-15%, the mass ratio of N, N' -methylene bisacrylamide to bagasse is 3-6%, the mass ratio of acrylic acid to bagasse is 8-15%, and the mass ratio of kaolin to bagasse is 3-6%, so that the water absorption capacity of the super absorbent resin prepared according to the proportion is 450-556 g/g.
2. The high water absorption cat litter according to claim 1, wherein the bagasse has a particle size of 80-100 mesh.
3. The high water absorption cat litter according to claim 1, wherein the corn flour is a mixture of common corn flour and modified corn starch, and the mass ratio of the common corn flour to the modified corn starch is 0.49-0.54.
4. The high-water-absorptivity cat litter according to claim 1, wherein the natural plant binder is a mixture of guar gum and okra pectin, and the mass ratio of the guar gum to the okra pectin is 1: 1-5.
5. The super absorbent cat litter according to claim 1, wherein said activated carbon is natural plant activated carbon.
6. The high water absorption cat litter according to claim 1, wherein the high water absorption cat litter is prepared by a method comprising the following steps:
(1) preparing materials: fully mixing the bagasse modified super absorbent resin, corn flour, a natural plant binder, silicon dioxide, activated carbon and water;
(2) molding: placing the mixed materials in a forming device to obtain a cylindrical formed product;
(3) and (3) cooling: spreading the formed product on the ground until the formed product is cooled to room temperature;
(4) crushing: crushing the cooled formed product by a crusher, and forming an irregular cylinder after crushing the formed product;
(5) screening: and screening the crushed molding product, wherein particles with the particle size of 2-2.5 mm and the length of 10-20 mm are screened.
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