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CN-121973523-A - Antibacterial and anti-algae PP composite board and preparation method and application thereof

CN121973523ACN 121973523 ACN121973523 ACN 121973523ACN-121973523-A

Abstract

The invention discloses an antibacterial and anti-algae PP composite board, a preparation method and application thereof, comprising a polypropylene composite material layer, a glass fiber reinforced layer and an antibacterial layer which are sequentially laminated, wherein the composition components of the antibacterial layer comprise antibacterial master batches, the antibacterial master batch has a core-shell structure, takes a maleic anhydride grafted polypropylene resin material as a shell layer, and takes a mixed filler formed by quaternary ammonium salt grafted chitosan and nano zinc oxide as an inner core. The antibacterial and anti-algae PP composite board provided by the invention has excellent antibacterial and anti-algae capability, and has excellent mechanical properties and weather resistance.

Inventors

  • SHEN LINFENG
  • GAO ZHANFU
  • LI XIULI

Assignees

  • 江苏彼欧亿环保科技有限公司

Dates

Publication Date
20260505
Application Date
20260206

Claims (10)

  1. 1. The antibacterial and anti-algae PP composite board is characterized by comprising a polypropylene composite material layer, a glass fiber reinforced layer and an antibacterial layer which are sequentially laminated, wherein the antibacterial layer comprises antibacterial master batches, the antibacterial master batches have a core-shell structure, a maleic anhydride grafted polypropylene resin material is used as a shell layer, and a mixed filler formed by quaternary ammonium salt grafted chitosan and nano zinc oxide is used as an inner core.
  2. 2. The antibacterial and anti-algae PP composite board according to claim 1, wherein the mass percentage of the maleic anhydride grafted polypropylene resin is 60-80 wt% based on 100% of the total mass of the components of the antibacterial masterbatch; the preparation method of the antibacterial master batch comprises the steps of mixing maleic anhydride grafted polypropylene resin and mixed filler, carrying out melt extrusion and granulation to obtain the antibacterial master batch with the particle size D50 of 5-15 mu m; The melt extrusion is performed by a screw extruder, and the parameters of the screw extruder comprise a first area 170-175 ℃, a second area 175-180 ℃, a third area 185-195 ℃ and a fourth area 195-200 ℃, and a machine head 190-195 ℃ with the rotating speed of 200-240 rpm.
  3. 3. The antibacterial and anti-algae PP composite board according to claim 2, wherein the preparation method of the mixed filler comprises the steps of mixing quaternary ammonium salt grafted chitosan and nano zinc oxide according to the mass ratio of (2-5): 1 in the presence of ethanol for 0.5-1 h to obtain the mixed filler; the preparation method of the quaternary ammonium salt grafted chitosan comprises the following steps: Mixing chitosan solution and glycidyl trimethyl ammonium chloride according to the mass ratio of 1 (1-3), reacting at 60-80 ℃ for 2-3 h, and regulating the pH value to be neutral after the reaction to precipitate the quaternary ammonium salt grafted chitosan, thereby obtaining the quaternary ammonium salt grafted chitosan.
  4. 4. The antibacterial and anti-algae PP composite board according to claim 1, wherein the composition of the glass fiber reinforced layer comprises chopped glass fibers and ethylene-ethyl acetate copolymer, and the mass percentage of the chopped glass fibers is 50-80 wt% based on 100% of the total mass of the composition of the glass fiber modified layer; the length of the chopped glass fiber is 1-5 mm, and the content of vinyl acetate in the ethylene-ethyl acetate copolymer is 18-40%.
  5. 5. The antibacterial and anti-algae PP composite board according to claim 1, wherein the composition of the polypropylene composite material layer comprises 25-50 parts of polypropylene resin, 5-15 parts of nano silicon dioxide, 1-5 parts of compatilizer, 0.6-1 part of antioxidant and 0.2-2 parts of light stabilizer; the compatilizer comprises maleic anhydride grafted polypropylene, the antioxidant comprises antioxidant 1010, and the light stabilizer comprises hindered amine light stabilizer.
  6. 6. The antibacterial and anti-algae PP composite board according to claim 1, wherein the thickness of the antibacterial layer is 10-50 μm, the thickness of the glass fiber reinforced layer is 100-500 μm, and the thickness of the polypropylene composite layer is 50-200 μm.
  7. 7. The antimicrobial and anti-algae PP composite board according to claim 1, further comprising a flexible conductive sensing device located between the glass fiber reinforced layer and the antimicrobial layer, the conductive sensing device having a thickness of 10-100 μm; The antibacterial and anti-algae PP composite board further comprises a self-cleaning layer, wherein the self-cleaning layer is positioned on one side, far away from the glass fiber reinforced layer, of the polypropylene composite material layer, the thickness of the self-cleaning layer is 5-10 mu m, the self-cleaning layer comprises heptadecafluorodecyl triethoxysilane, nano silicon dioxide and polydimethylsiloxane, and the mass ratio of the heptadecafluorodecyl triethoxysilane, the nano silicon dioxide and the polydimethylsiloxane is (12-15): (8-10): (5-8).
  8. 8. A method for preparing the antibacterial and anti-algae PP composite board according to any one of claims 1-7, wherein the method comprises: (1) The polypropylene composite material layer, the glass fiber reinforced layer and the antibacterial layer are sequentially laminated, and hot-pressed at 175-185 ℃ and 8-10 MPa ℃ for 15-20 min, so that the antibacterial and anti-algae PP composite board is obtained.
  9. 9. The method of manufacturing according to claim 8, further comprising placing a flexible conductive sensing device between the glass fiber reinforced layer and the antimicrobial layer, followed by lamination and hot pressing; The preparation method further comprises the steps of adding 0.1-1 wt% of acetic acid into ethanol slurry of the self-cleaning layer, mixing, coating the mixture on the surface of the polypropylene composite material layer, and drying to obtain the self-cleaning layer.
  10. 10. Use of the antibacterial and anti-algal PP composite plate according to any one of claims 1-7 in aquaculture.

Description

Antibacterial and anti-algae PP composite board and preparation method and application thereof Technical Field The invention belongs to the technical field of composite materials, and particularly relates to an antibacterial and anti-algae PP composite board, and a preparation method and application thereof. Background In the aquaculture industry, the performance of materials used in aquaculture facilities is directly related to the aquaculture benefits, the water environment and the health of aquaculture organisms, and the polypropylene (PP) plate has excellent corrosion resistance, strong tolerance to salt, acid-base substances and disinfectants in the water, is not easy to corrode and deform in a long-term soaking environment, can effectively avoid the inherent defects of traditional materials such as easy decay of wood, easy corrosion and leakage of metal and the like, and can prevent dirt and algae from adhering to a certain extent due to the low surface energy characteristic, so that the PP plate is widely applied to the manufacture of aquaculture facilities such as aquaculture tanks and water tanks. However, in an actual cultivation scene, the cultivation water body is rich in nutrient salts such as nitrogen and phosphorus, sufficient nutrients are provided for breeding algae and bacteria, although the traditional PP plate has a certain microbial corrosion resistance, after long-term soaking, organic chips are easy to accumulate on the surface of the traditional PP plate and form biofilms, the biofilms can become stable attachment points of algae and bacteria, and the problem of surface pollution is remarkably aggravated, in addition, when the pH value of the cultivation water body is higher, the growth of beneficial algae is inhibited, the propagation of harmful algae such as blue algae is facilitated, the attachment pollution condition of the surface of the PP plate is further worsened, the cleaning frequency and maintenance cost of cultivation facilities are increased, and meanwhile, the cultivation biological diseases can be possibly induced. In the prior related patent technology, patent CN119220022B discloses a low-temperature-resistant PP composite board and a preparation method thereof, the patent prepares a small molecular weight chain amide compound through amidation reaction of phthaloyl chloride and diethylenetriamine, then utilizes (3-iodopropyl) trimethoxysilane to perform substitution reaction with imine structures in molecular chains of the compound to introduce methoxysilane structures into side chains to prepare a low-temperature-resistant additive, after the low-temperature-resistant additive is introduced into the PP composite board, the low-temperature shock resistance and creep resistance of the composite board are obviously improved, the problem that the mechanical properties of the PP board are poor in low-temperature environments is solved, but when the PP composite board is applied to aquaculture scenes, a plurality of unresolved technical defects still exist, namely, firstly, the PP composite board has migration risk of harmful substances, can release toxic substances such as stibium, phthalate and the like under high-temperature, acid or grease environments, pollute water bodies, and the health of aquatic animals can be endangered, the harmful substances possibly accumulate in a chain length period, secondly, the anti-algae ion anti-bacterial agent is easy to absorb the PP composite board, the anti-bacterial agent is easy to absorb the toxic substances in the water bodies, the anti-bacterial agent is easy to be degraded, the environmental protection cycle of the anti-bacterial agent is gradually reduced, the anti-bacterial agent is easy to be degraded, the anti-bacterial agent is easy to absorb the algae is gradually, the environmental protection is degraded in the water, the common plastic is degraded, the environmental protection is polluted by the ultraviolet is gradually, the environmental protection has such as has such problems that the toxic effect is reduced, and the toxic material is reduced, and has high-bacterial protection effect is degraded by the environmental protection is gradually causes, and has low-quality is degraded by the environmental protection has low-quality is bad, the method has the advantages that the method is convenient to use, the environment is polluted, the surrounding ecological environment is polluted, bacterial resistance and secondary pollution are easy to cause, the single antibacterial agent can induce common microorganisms in the culture environment such as aeromonas hydrophila to generate drug resistance after long-term use, the disease control effect is reduced, chemical pollution is formed after the ineffective antibacterial agent is dissolved out, the water body environment is further deteriorated, the culture cost is increased, the waste treatment difficulty is high, the environmental burden is heavy, the PP plate is difficult