CN110744797B - Antibacterial PP film and preparation method and application thereof - Google Patents
Antibacterial PP film and preparation method and application thereof Download PDFInfo
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- CN110744797B CN110744797B CN201910904361.1A CN201910904361A CN110744797B CN 110744797 B CN110744797 B CN 110744797B CN 201910904361 A CN201910904361 A CN 201910904361A CN 110744797 B CN110744797 B CN 110744797B
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- film
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Abstract
The invention discloses an antibacterial PP film and a preparation method and application thereof. The preparation method comprises the following steps: (1) calcining the nano silver sol at the temperature of 180-250 ℃ for 1-3h to obtain nano silver powder; (2) mixing the nano silver powder with PP film raw materials, and performing melt extrusion to obtain the antibacterial PP film. The method comprises the steps of calcining the nano silver sol, and then adding the calcined nano silver sol into a PP film raw material. Other ions and impurities in the nano silver sol can be promoted to volatilize by calcination, and the content of the silver ions with positive charges in the nano silver powder is increased, so that the dispersibility of the nano silver powder in the PP film is improved, and the nano silver ions are firmly and uniformly combined with the PP film; the antibacterial efficiency of the nano silver powder with unit content is improved, so that the addition amount of the nano silver powder in the PP film raw material can be reduced; the cost is reduced, and the influence of the nano silver powder on the ductility and the surface bonding strength of the PP film is reduced.
Description
Technical Field
The invention belongs to the technical field of artificial veneers, and particularly relates to an antibacterial PP film and a preparation method and application thereof.
Background
The surface facing of the wooden product usually comprises decorative materials such as decorative veneer, melamine paper, impregnated bond paper, polyvinyl chloride (PVC) film, polypropylene (PP) film and Polyester (PET) film, wherein the wooden product can be made into the surface effect with natural wood visual sense and texture by plastic film (such as PVC, PP, PET, and the like) and decorative paper (such as melamine decorative paper, impregnated bond paper, and the like), wherein the decorative paper is used for facing the plane part of the wooden product more, and the plastic film can be used for coating and decorating the surface of the special-shaped parts such as door pocket lines, decorative lines, cabinet body plate edge seals, and the like.
In plastic film decorative materials, a PVC film and a PP film are very common, but because the PVC film and the PP film have different properties, the PVC film and the PP film are modified in an antibacterial function by different means.
For softer, more ductile PVC films, the antimicrobial agent is added directly to the PVC film. The invention discloses a corrosion-resistant, pollution-resistant, mildew-proof and bacteria-proof wall decoration film as disclosed in the Chinese patent application with the publication number of CN109057208A, which sequentially comprises a non-woven fabric layer, a water-based hot melt adhesive layer, a PVC film layer, a second UV coating, an ink printing layer and a first UV coating, wherein the first UV coating and the second UV coating are composed of the following raw materials in parts by weight: 20-30 parts of polyether urethane acrylate, 15-25 parts of organic silicon acrylate, 8-12 parts of fluorine-containing acrylate, 4-14 parts of photoinitiator, 6-15 parts of active diluent, 1-4 parts of nano-silver antibacterial agent, 0.15-0.4 part of flatting agent and 0.15-0.4 part of defoaming agent; the preparation method comprises the following steps: mixing polyether polyurethane acrylic resin, organic silicon acrylate, fluorine-containing acrylate, a photoinitiator and an active diluent, heating to 55-65 ℃, stirring at a high speed for 60-120min, sequentially adding a nano-silver antibacterial agent, a leveling agent and an antifoaming agent, and continuing to stir at a high speed for 60 min.
In contrast, in the case of a PP film having a relatively high hardness and a relatively low ductility, in order to avoid the influence on the ductility of the PP film caused by directly adding an antibacterial agent to the PP film, an antibacterial layer is generally attached to the surface of the PP film by hot pressing. The invention discloses an antibacterial PP decorative film with soft touch for a wall body, which comprises a PP base material, a buffer layer and a printing surface layer which are sequentially arranged from bottom to top, wherein the buffer layer is filled with expandable polystyrene particles, the particle size of the expandable polystyrene particles is 0.1-0.3 mm, and the upper layer of the printing surface layer is also provided with a silver ion antibacterial layer.
Compared with PVC films, the PP film which does not contain chloride, is degradable and has good performances in all aspects meets the requirement of environmental protection, and is the trend of surface finish of wood products. The current modification mode of the antibacterial function of the PP film has many defects, such as: (1) the silver ion antibacterial layer which is arranged independently is easy to peel off, and has no long-acting antibacterial effect; (2) the antibacterial agent is directly added into the PP film, so that the dispersibility and the dispersion unevenness of the antibacterial agent are low, and the ductility and the surface bonding strength of the PP film are greatly influenced; although the effect on the performance of the PP film can be reduced by reducing the addition amount, the antibacterial effect is poor.
Disclosure of Invention
The invention aims to provide an antibacterial PP film and a preparation method and application thereof.
In order to achieve the above purpose, the technical solution of the present application is as follows:
a preparation method of an antibacterial PP film comprises the following steps:
(1) preparing nano silver sol;
(2) calcining the nano silver sol at the temperature of 180-250 ℃ (calcining under inert gas to prevent oxidation) for 1-3h to obtain nano silver powder;
(3) and mixing the nano silver powder with the PP film raw material, and performing melt extrusion to obtain the antibacterial PP film.
The invention firstly calcines the nano silver sol and then adds the nano silver sol into the PP film raw material to prepare the antibacterial PP film. Compared with the nano silver sol, the solid powder obtained by calcination is easy to be fully and uniformly mixed with the PP resin, other ions and impurities in the nano silver sol can be promoted to volatilize by calcination, and the content of the silver ions with positive charges in the nano silver powder is increased, so that the dispersibility of the nano silver powder in the PP film is further improved, and the nano silver ions are firmly and uniformly combined with the PP film; the content of the silver ions with positive charges in the nano silver powder is increased, so that the antibacterial efficiency of the nano silver powder with unit content is improved, and the addition amount of the nano silver powder in the PP film raw material can be reduced; the cost is reduced, and the influence of the nano silver powder on the ductility and the surface bonding strength of the PP film is reduced.
Preferably, in the step (1) of the method for preparing the antibacterial PP film, the method for preparing the nano silver sol comprises:
dissolving a water-soluble protective agent in a silver nitrate aqueous solution with the concentration of 0.001-0.1mol/L, wherein the mass ratio of the water-soluble protective agent to silver nitrate is 0.5-10.0:1, and obtaining a solution A;
② carrying out ice bath on 0.001-0.2mol/L sodium borohydride aqueous solution for 10-30min to obtain solution B;
thirdly, dripping the solution A into the solution B at the dripping speed of 30-60 drops/min while stirring; after the solution A is dripped, continuously stirring for 20-40min to obtain the nano silver sol;
wherein the molar ratio of the sodium borohydride to the silver nitrate is 1.0-30.0: 1.
The nano silver sol with the particle size of 5-80nm can be obtained by adopting the method.
Preferably, in the step (2) of the above method for preparing the antibacterial PP film, the nano silver is calcined at 200 ℃ for 2 h.
Preferably, in the step (3) of the method for preparing the antibacterial PP film, the mass ratio of the nano silver powder to the PP film raw material is (0.5-20): 100.
The antibacterial PP film is prepared by the preparation method of the antibacterial PP film.
The antibacterial PP film comprises the following raw materials in parts by weight: 50-80 parts of polypropylene, 10-20 parts of vinyl t-butyl hydroperoxide silane, 1-10 parts of nano silver powder and 1-10 parts of an auxiliary agent.
The application of the antibacterial PP film in preparing the facing artificial board comprises the following steps:
sanding and dedusting a plain plate, and heating to 30-35 ℃;
and (II) applying PUR hot melt adhesive on the surface of the plain plate obtained in the step (I), pressing and sticking the antibacterial PP film on the surface of the plain plate at the temperature of 35 ℃ and under the pressure of 0.4MPa, and curing for 1-3h to obtain the facing artificial board.
The invention also provides a decorative artificial board which comprises a base material and a decorative layer pressed and attached to the surface of the base material, wherein the decorative layer is the antibacterial PP film.
Compared with the prior art, the invention has the beneficial effects that:
the invention firstly calcines the nano silver sol and then adds the nano silver sol into the PP film raw material to prepare the antibacterial PP film. Compared with the nano silver sol, the solid powder obtained by calcination is easy to be fully and uniformly mixed with the PP resin, other ions and impurities in the nano silver sol can be promoted to volatilize by calcination, and the content of the silver ions with positive charges in the nano silver powder is increased, so that the dispersibility of the nano silver powder in the PP film is further improved, and the nano silver ions are firmly and uniformly combined with the PP film; the content of the silver ions with positive charges in the nano silver powder is increased, so that the antibacterial efficiency of the nano silver powder with unit content is improved, and the addition amount of the nano silver powder in the PP film raw material can be reduced; the cost is reduced, and the influence of the nano silver powder on the ductility and the surface bonding strength of the PP film is reduced.
Detailed Description
The technical means of the present invention will be described in further detail below with reference to specific embodiments.
Example 1
The preparation method of the antibacterial PP film comprises the following steps:
(1) calcining the nano silver sol at 180 ℃ for 3h to obtain nano silver powder;
the preparation method of the nano silver sol comprises the following steps:
dissolving a water-soluble protective agent PVP in a silver nitrate water solution with the concentration of 0.001mol/L, wherein the mass ratio of the water-soluble protective agent PVP to silver nitrate is 0.5:1, and obtaining a solution A;
secondly, carrying out ice bath on 0.001mol/L sodium borohydride aqueous solution for 10min to obtain solution B;
dropping the solution A into the solution B at a dropping speed of 30 drops/min while stirring; after the solution A is dripped, continuously stirring for 20min to obtain nano silver sol;
wherein the molar ratio of the sodium borohydride to the silver nitrate is 1.0: 1.
(2) 1 part of nano silver powder is taken and uniformly mixed with 80 parts of polypropylene, 20 parts of vinyl tert-butyl hydroperoxide, 5 parts of calcium stearate and 5 parts of antioxidant, and the antibacterial PP film is obtained through melt extrusion.
Example 2
The preparation method of the antibacterial PP film comprises the following steps:
(2) calcining the nano silver sol at 250 ℃ for 1h to obtain nano silver powder;
the preparation method of the nano silver sol comprises the following steps:
dissolving a water-soluble protective agent PVP in a silver nitrate water solution with the concentration of 0.1mol/L, wherein the mass ratio of the water-soluble protective agent PVP to silver nitrate is 10:1, and obtaining a solution A;
② carrying out ice bath on 0.2mol/L sodium borohydride aqueous solution for 30min to obtain solution B;
thirdly, dripping the solution A into the solution B at a dripping speed of 60 drops/min while stirring; after the solution A is dripped, continuously stirring for 40min to obtain nano silver sol;
wherein the molar ratio of the sodium borohydride to the silver nitrate is 30: 1.
(2) And (3) taking 10 parts of nano silver powder, uniformly mixing with 50 parts of polypropylene, 10 parts of vinyl tert-butyl hydroperoxide, 1 part of calcium stearate and 1 part of antioxidant, and performing melt extrusion to obtain the antibacterial PP film of the embodiment.
Example 3
The preparation method of the antibacterial PP film comprises the following steps:
(2) calcining the nano silver sol at 200 ℃ for 2 hours to obtain nano silver powder;
the preparation method of the nano silver sol comprises the following steps:
dissolving a water-soluble protective agent PVP in a silver nitrate water solution with the concentration of 0.05mol/L, wherein the mass ratio of the water-soluble protective agent PVP to silver nitrate is 5:1, and obtaining a solution A;
② carrying out ice-bath on 0.01mol/L sodium borohydride aqueous solution for 20min to obtain solution B;
thirdly, dripping the solution A into the solution B at a dripping speed of 45 drops/min while stirring; after the solution A is dripped, continuously stirring for 30min to obtain nano silver sol;
wherein the molar ratio of the sodium borohydride to the silver nitrate is 15: 1.
(3) 4 parts of nano-silver powder is uniformly mixed with 70 parts of polypropylene, 15 parts of vinyl tert-butyl hydroperoxide, 5 parts of calcium stearate and 5 parts of antioxidant, and the antibacterial PP film is obtained through melt extrusion.
Example 4
The preparation method of the artificial veneer comprises the following steps:
sanding and dedusting a plain plate, and heating to 30-35 ℃;
and (II) applying a PUR hot melt adhesive (120-145 ℃) to the surface of the plain plate obtained in the step (I), pressing and attaching the antibacterial PP film prepared in the example 1 to the surface of the plain plate at 35 ℃ and 0.4MPa, cutting the film, then curing the film for 2 hours at room temperature to obtain the decorative artificial board of the embodiment.
Example 5
The present embodiment is a facing artificial board, and a manufacturing method thereof includes the following steps:
sanding and dedusting a plain plate, and heating to 30-35 ℃;
and (II) applying PUR hot melt adhesive (120-.
Example 6
The present embodiment is a facing artificial board, and a manufacturing method thereof includes the following steps:
sanding and dedusting a plain plate, and heating to 30-35 ℃;
and (II) applying PUR hot melt adhesive (120-.
Comparative example 1
This comparative example is a facing artificial board prepared in the same manner as in example 6, but using a conventional PP film without nano silver powder added.
Comparative example 2
This comparative example was an artificial veneer, which was prepared in the same manner as in example 6, but using a PP film to which a conventional nano silver ion antibacterial agent that had not been calcined was added.
The performance of each of the veneered wood-based panels obtained in examples 4 to 6 and comparative examples 1 to 2 was measured, and the results are shown in table 1.
TABLE 1
Claims (10)
1. The preparation method of the antibacterial PP film is characterized by comprising the following steps:
(1) calcining the nano-silver sol with the particle size of 5-80nm at the temperature of 180 ℃ and under the inert atmosphere for 1-3h to obtain nano-silver powder;
(2) and mixing the nano silver powder with PP film raw materials, and performing melt extrusion to obtain the antibacterial PP film.
2. The method for preparing the antibacterial PP film according to claim 1, wherein in the step (1), the method for preparing the nano silver sol comprises:
dissolving a water-soluble protective agent in a silver nitrate aqueous solution with the concentration of 0.001-0.1mol/L, wherein the mass ratio of the water-soluble protective agent to silver nitrate is 0.5-10.0:1, and obtaining a solution A;
secondly, carrying out ice bath on the sodium borohydride aqueous solution with the concentration of 0.001-0.2mol/L for 10-30min to obtain a solution B;
thirdly, dripping the solution A into the solution B at the dripping speed of 30-60 drops/min while stirring; after the solution A is dripped, continuously stirring for 20-40min to obtain the nano silver sol;
wherein the molar ratio of the sodium borohydride to the silver nitrate is 1.0-30.0: 1.
3. The method for preparing the antibacterial PP film according to claim 1, wherein in the step (1), the nano silver sol has a particle size of 5 to 80 nm.
4. The method for preparing the antibacterial PP film according to claim 1, wherein in the step (1), the nano silver is calcined at 200 ℃ for 2 h.
5. The method for preparing the antibacterial PP film according to claim 1, wherein in the step (2), the mass ratio of the nano silver powder to the PP film raw material is (0.5-20): 100.
6. An antibacterial PP film, characterized by being prepared by the method of any one of claims 1 to 5.
7. The antibacterial PP film according to claim 6, wherein the raw materials comprise, in parts by weight: 50-80 parts of polypropylene, 10-20 parts of vinyl tri-tert-butyl peroxide silane, 1-10 parts of nano-silver powder and 1-10 parts of an auxiliary agent.
8. Use of an antimicrobial PP film according to claim 6 or 7 for the preparation of veneered wood-based panels.
9. The use according to claim 8, comprising the steps of:
sanding and dedusting a plain plate, and heating to 30-35 ℃;
and (II) applying a PUR hot melt adhesive to the surface of the plain plate obtained in the step (I), pressing and sticking the antibacterial PP film to the surface of the plain plate at 35 ℃ and under 0.4MPa, and curing for 1-3 hours to obtain the facing artificial board.
10. A decorative artificial board, comprising a substrate and a decorative layer pressed on the surface of the substrate, wherein the decorative layer is the antibacterial PP film according to claim 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910904361.1A CN110744797B (en) | 2019-09-24 | 2019-09-24 | Antibacterial PP film and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910904361.1A CN110744797B (en) | 2019-09-24 | 2019-09-24 | Antibacterial PP film and preparation method and application thereof |
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| CN110744797A CN110744797A (en) | 2020-02-04 |
| CN110744797B true CN110744797B (en) | 2022-07-26 |
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| CN111763482A (en) * | 2020-07-06 | 2020-10-13 | 东莞市通利新材料科技有限公司 | Process protective film and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101731272A (en) * | 2009-12-24 | 2010-06-16 | 中国人民解放军军事医学科学院基础医学研究所 | Method for preparing antibacterial nanometer silver colloid |
| CN206769305U (en) * | 2017-04-14 | 2017-12-19 | 武汉尚品木业有限公司 | A kind of waterproof wood floor |
| CN110256747A (en) * | 2019-05-15 | 2019-09-20 | 金富科技股份有限公司 | A kind of antibiotic plastic and its preparation method and application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090200A (en) * | 2017-04-21 | 2017-08-25 | 周益铭 | A kind of preparation method of ultraviolet light screener |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101731272A (en) * | 2009-12-24 | 2010-06-16 | 中国人民解放军军事医学科学院基础医学研究所 | Method for preparing antibacterial nanometer silver colloid |
| CN206769305U (en) * | 2017-04-14 | 2017-12-19 | 武汉尚品木业有限公司 | A kind of waterproof wood floor |
| CN110256747A (en) * | 2019-05-15 | 2019-09-20 | 金富科技股份有限公司 | A kind of antibiotic plastic and its preparation method and application |
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