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CN-122013594-A - Zinc ricinoleate composite antibacterial water-absorbing paper and preparation method and application thereof

CN122013594ACN 122013594 ACN122013594 ACN 122013594ACN-122013594-A

Abstract

The invention relates to zinc ricinoleate composite antibacterial absorbent paper, and a preparation method and application thereof. The method comprises the steps of preparing composite antibacterial liquid by adopting raw materials comprising zinc ricinoleate, modified nano silicon dioxide and a dispersing agent, preparing composite antibacterial slurry by adopting raw materials comprising plant fibers, the composite antibacterial liquid and a humectant, broadcasting super absorbent resin on wet bottom paper to form a super absorbent resin layer, paving a composite antibacterial paper pulp layer formed by molding the composite antibacterial slurry on the super absorbent resin layer, paving wet surface paper on the composite antibacterial paper pulp layer, wet pressing to obtain wet paper blanks, drying the wet paper blanks by hot air at 100-110 ℃ and treating the wet paper blanks at 80-90 ℃ for 20-30 min, and cooling to obtain the water absorbent paper. The invention solves the problems of uneven dispersion and easy migration of zinc ricinoleate by constructing a composite antibacterial system, and simultaneously effectively ensures the synergistic high efficiency of water absorption, bacteriostasis and deodorization.

Inventors

  • RONG YUFENG
  • ZHANG YANYAN
  • TIAN CHUNLAN
  • CUI XIANGKAI

Assignees

  • 诺宸股份有限公司

Dates

Publication Date
20260512
Application Date
20260305

Claims (10)

  1. 1. The preparation method of the zinc ricinoleate composite antibacterial absorbent paper is characterized by comprising the following steps of: (1) Ultrasonically dispersing zinc ricinoleate and modified nano silicon dioxide by using water, then adding a dispersing agent and uniformly stirring to obtain a composite antibacterial solution; (2) Preparing plant fiber into plant fiber slurry by using water, and then adding a composite antibacterial liquid and a humectant into the plant fiber slurry and uniformly stirring to obtain the composite antibacterial slurry; (3) Spreading super absorbent resin on the wet bottom paper to form a super absorbent resin layer, then paving a composite antibacterial paper pulp layer on the super absorbent resin layer, and finally paving wet surface paper on the composite antibacterial paper pulp layer and performing wet pressing to obtain a wet paper blank; (4) And carrying out hot air drying at 100-110 ℃ and treatment at 80-90 ℃ for 20-30 min on the wet paper blank, and cooling to obtain the zinc ricinoleate composite antibacterial absorbent paper.
  2. 2. The method of manufacturing according to claim 1, characterized in that: The modified nano silicon dioxide is silane coupling agent modified nano silicon dioxide; Preferably, the silane coupling agent is a silane coupling agent KH-550; Preferably, the particle size of the modified nano silicon dioxide is 50-100 nm.
  3. 3. The preparation method of claim 1, wherein the preparation raw materials of the composite antibacterial slurry comprise the following components in parts by mass: 50-60 parts of plant fiber, 0.2-0.8 part of zinc ricinoleate, 0.1-0.4 part of modified nano silicon dioxide, 0.1-0.3 part of dispersing agent and 0.5-1.0 part of humectant.
  4. 4. The method of manufacturing according to claim 1, characterized in that: in the zinc ricinoleate composite antibacterial absorbent paper, the mass ratio of the composite antibacterial slurry to the super absorbent resin is (50-75): 25-50, preferably (50-75): 25-30; the dispersant is polyoxyethylene sorbitan monolaurate and/or The humectant is glycerin.
  5. 5. The method of manufacturing according to claim 1, characterized in that: the wet bottom paper is formed by adopting bottom layer sizing agent, and preferably, the bottom layer sizing agent is prepared by preparing plant fiber into plant fiber sizing agent with the concentration of 12-16wt% by using water, and then adding polyethylene glycol monostearate into the plant fiber sizing agent and uniformly stirring; The wet surface paper is formed by adopting surface sizing agent, and preferably, the surface sizing agent is prepared by preparing plant fiber into plant fiber sizing agent with the concentration of 8-10wt% by using water, and then adding polyethylene glycol monostearate into the plant fiber sizing agent and uniformly stirring.
  6. 6. The method of manufacturing according to claim 5, wherein: in the preparation of the bottom layer slurry and/or the surface layer slurry, the mass ratio of polyethylene glycol monostearate to the plant fibers contained in the plant fiber slurry is (0.3-0.5): 20-30.
  7. 7. The method of manufacturing according to claim 1, characterized in that: the Gao Xishui resin is polyacrylate super absorbent resin and/or acrylate-acrylamide copolymer; preferably, the polyacrylate super absorbent resin is sodium polyacrylate super absorbent resin.
  8. 8. The method of manufacturing according to claim 1, characterized in that: in the step (1), the power of ultrasonic dispersion is 300-400W, and the time of ultrasonic dispersion is 15-20 min; In the step (1), the stirring speed is 800-1000 r/min, and the stirring time is 30-40 min; In the step (2), the concentration of the composite antibacterial slurry is regulated to be 10-15wt%; In the step (2), the pH value of the composite antibacterial slurry is regulated to 6.5-7.5, and/or In the step (2), the stirring speed is 600-800 r/min, and the stirring time is 5-15 min.
  9. 9. A zinc ricinoleate composite antibacterial absorbent paper produced by the production method of any one of claims 1 to 8.
  10. 10. Use of zinc ricinoleate composite bacteriostatic absorbent paper made by the preparation method of any one of claims 1 to 8 in sanitary articles; preferably, the sanitary article is one or more of sanitary towel, paper diaper and nursing pad; more preferably, the zinc ricinoleate composite antibacterial absorbent paper is used as an absorbent antibacterial layer of the sanitary product.

Description

Zinc ricinoleate composite antibacterial water-absorbing paper and preparation method and application thereof Technical Field The invention belongs to the technical field of sanitary product materials, and particularly relates to zinc ricinoleate composite antibacterial water-absorbing paper, and a preparation method and application thereof. Background The absorbent paper is a core component of the personal care sanitary product, and the water absorption capacity and the antibacterial and deodorant performance of the absorbent paper directly influence the use experience of the product. In the prior art, a bacteriostatic agent is added into part of the absorbent paper to improve the bacteriostatic effect, and common bacteriostatic agents comprise quaternary ammonium salts, phenols, metal ions and the like, but have the defects that the quaternary ammonium salt bacteriostatic agent is easily influenced by environmental pH, the bacteriostasis persistence is poor, the phenolic bacteriostatic agent has limited biocompatibility and can cause irritation after contacting skin for a long time, and the metal ion type bacteriostatic agent is easily migrated and lost to influence the bacteriostasis persistence. Zinc ricinoleate is used as an environment-friendly antibacterial and deodorant component, is applied to the fields of hydrocolloid dressing, deodorant and the like (for example, CN106310353A discloses zinc ricinoleate is used for hydrocolloid adhesives to realize wound odor absorption), but when the zinc ricinoleate is applied to absorbent paper, two key problems exist, namely, zinc ricinoleate is unevenly dispersed in a fiber substrate of the absorbent paper and is easy to agglomerate to cause local unbalance of antibacterial effect, and in the water absorption expansion process of the absorbent paper, zinc ricinoleate is easy to migrate and run away along with moisture, long-acting antibacterial cannot be guaranteed, the structure of the absorbent paper and the suitability of zinc ricinoleate are not designed, and three core performances of water absorption, antibacterial and deodorization are difficult to be considered in the prior art. Therefore, it is needed to provide bacteriostatic water absorbing paper capable of realizing stable immobilization of zinc ricinoleate and achieving multiple performances, and a preparation method and application thereof, and the blank of the prior art is filled. Disclosure of Invention In order to solve one or more technical problems in the prior art, the invention provides zinc ricinoleate composite antibacterial absorbent paper, and a preparation method and application thereof. According to the invention, through the structural optimization design of the water-absorbing paper and the construction of the composite antibacterial system (composite antibacterial paper pulp layer), the problem of uneven dispersion and easy migration of zinc ricinoleate is solved, and the synergistic high efficiency of water absorption, bacteriostasis and deodorization is effectively ensured. The invention provides a preparation method of zinc ricinoleate composite antibacterial absorbent paper in a first aspect, which comprises the following steps: (1) Ultrasonically dispersing zinc ricinoleate and modified nano silicon dioxide by using water, then adding a dispersing agent and uniformly stirring to obtain a composite antibacterial solution; (2) Preparing plant fiber into plant fiber slurry by using water, and then adding a composite antibacterial liquid and a humectant into the plant fiber slurry and uniformly stirring to obtain the composite antibacterial slurry; (3) Spreading super absorbent resin on the wet bottom paper to form a super absorbent resin layer, then paving a composite antibacterial paper pulp layer on the super absorbent resin layer, and finally paving wet surface paper on the composite antibacterial paper pulp layer and performing wet pressing to obtain a wet paper blank; (4) And carrying out hot air drying at 100-110 ℃ and treatment at 80-90 ℃ for 20-30 min on the wet paper blank, and cooling to obtain the zinc ricinoleate composite antibacterial absorbent paper. Preferably, the modified nano silicon dioxide is silane coupling agent modified nano silicon dioxide, preferably, the silane coupling agent is silane coupling agent KH-550, and preferably, the particle size of the modified nano silicon dioxide is 50-100 nm. Preferably, the preparation raw materials of the composite antibacterial slurry comprise, by mass, 50-60 parts of plant fibers, 0.2-0.8 part of zinc ricinoleate, 0.1-0.4 part of modified nano silicon dioxide, 0.1-0.3 part of dispersing agent and 0.5-1.0 part of humectant. Preferably, in the zinc ricinoleate composite antibacterial absorbent paper, the mass ratio of the composite antibacterial slurry to the super absorbent resin is (50-75): 25-50, preferably (50-75): 25-30), the dispersing agent is polyoxyethylene sorbitan monolaurate, and/or the humectant is glyc