CN113459608B - Long-acting antibacterial composite board for building and preparation method thereof - Google Patents

Long-acting antibacterial composite board for building and preparation method thereof Download PDF

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Publication number
CN113459608B
CN113459608B CN202110566663.XA CN202110566663A CN113459608B CN 113459608 B CN113459608 B CN 113459608B CN 202110566663 A CN202110566663 A CN 202110566663A CN 113459608 B CN113459608 B CN 113459608B
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antibacterial
parts
inorganic
plate
layer
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CN113459608A (en
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王春敏
孙亚峰
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Jiaxing Lingke Material Technology Co ltd
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Jiaxing Lingke Material Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/12—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/045—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against fire

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a long-acting antibacterial composite board for buildings, which comprises an organic layer, an adhesive layer and an inorganic layer; the adhesive layer compounds the organic layer and the inorganic layer together; the organic layer is prepared from the following raw materials in parts by weight: 1-5 parts of antibacterial agent, 80-85 parts of thermoplastic polymer resin particles, 1-10 parts of flame retardant, 1-30 parts of inorganic filler, 0.05-0.1 part of antioxidant, 0.05-0.1 part of stabilizer, 0.1-1 part of surface treating agent and 0.1-0.2 part of lubricant. The composite board has excellent physical properties of a thermoplastic polymer organic layer, realizes a long-acting slow-release antibacterial function by using the anionic antibacterial agent carried by the glass beads, and obviously improves the rigidity and the thermal stability by adding the inorganic filler; and the composite board is laminated and bonded with an inorganic board to prepare the composite board, has good flame retardance, material rigidity and sound and heat insulation performance, and is convenient to install and use in buildings. Tests show that the plate has lasting antibacterial property, the antibacterial efficiency can reach more than 99 percent, and the plate does not contain formaldehyde and has high safety.

Description

Long-acting antibacterial composite board for building and preparation method thereof
Technical Field
The invention relates to the technical field of composite materials, in particular to a long-acting antibacterial composite board for buildings and a preparation method thereof.
Background
Hospitals, nursing homes, kindergartens, large-sized cold stores and other public buildings have increasingly required the provision of materials having an antibacterial (bactericidal) function as well as excellent chemical resistance. Most of the solutions adopted at present are to spray a sterilization solution with certain chemical corrosiveness on the surface of the interior of the building at intervals so as to achieve the effects of sterilization and disinfection. However, in a refrigerator for storing food, regular disinfection is difficult to implement, and even if the regular disinfection is implemented, public buildings such as hospitals with crowded people flow, and the like, can hardly prevent harmful bacteria brought by a person who enters the refrigerator after entering the refrigerator, and the harmful bacteria are propagated and spread in large quantities before the next disinfection; and the hidden corners or the sheltered parts are difficult to disinfect by spraying sterilizing liquid, so that the regular disinfection fails and the required expectation is difficult to achieve.
In order to solve the above problems, some manufacturers have used a coating layer with an antibacterial function to be coated on the surface of the inorganic plate for construction to improve the antibacterial property. The inorganic plates with the antibacterial coatings are commonly called inorganic pre-coating antibacterial plates on the market, the base materials of the inorganic plates mostly adopt calcium silicate plates, the surfaces of the inorganic plates are mostly coated with polyester systems containing a small amount of organic antibacterial agents, the surfaces of the antibacterial coatings are formed after ultraviolet curing or heating curing, and the inorganic plates have certain fire resistance, ageing resistance and water resistance; however, this method has some disadvantages:
(1) The calcium silicate board has the fragile brittleness of common cement materials, high weight, complex cement components and large difficulty in separating toxic components such as asbestos, heavy metal, silicon dioxide crystals and the like;
(2) The antibacterial coating is easy to fall off and peel off in a large temperature difference and humid environment, the antibacterial efficiency is obviously reduced along with the increase of the cleaning times, the antibacterial performance retention time is short, and the like.
The defects influence the use of the material in practical engineering projects, so that a better solution is needed.
Disclosure of Invention
The invention aims to provide a long-acting antibacterial composite board for buildings and a preparation method thereof aiming at the defects in the prior art, the long-acting antibacterial composite board for buildings described by the invention has excellent physical properties of a thermoplastic polymer organic layer, and utilizes an anionic antibacterial agent carried by glass beads to realize the long-acting slow-release antibacterial function, and the rigidity and the thermal stability are obviously improved by adding an inorganic filler; the composite material plate prepared by laminating and bonding the inorganic plate has good flame retardant property, excellent sound and heat insulation property and excellent material rigidity, and is convenient for building installation and use.
In order to realize the purpose, the invention adopts the following technical scheme:
a long-acting antibacterial composite board for buildings comprises an organic layer, an adhesive layer and an inorganic layer; the adhesive layer compounds the organic layer and the inorganic layer together; the organic layer is prepared from the following raw materials in parts by weight: 1-5 parts of antibacterial agent, 80-85 parts of thermoplastic polymer resin particles, 1-10 parts of flame retardant, 1-30 parts of inorganic filler, 0.05-0.1 part of antioxidant, 0.05-0.1 part of stabilizer, 0.1-1 part of surface treating agent and 0.1-0.2 part of lubricant.
The composite sheet is a multilayer structure sheet in which an inorganic layer and an organic layer are combined, and an adhesive layer is provided between the inorganic layer and the organic layer to firmly bond the inorganic layer and the organic layer. The multilayer composite material has the advantages of organic and inorganic materials, and makes up the respective defects mutually to form a special composite board with complete performance.
Preferably, the thermoplastic polymer resin particles are one or more of Polycarbonate (PC), acrylonitrile Butadiene Styrene (ABS), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyamide resin (PA), and Polytetrafluoroethylene (PTFE). In the present invention, the Polycarbonate (PC) material is preferably a polymer resin substrate.
Preferably, the antimicrobial agent is a silver ion antimicrobial agent.
The antibacterial agent may be a natural antibacterial agent, an organic synthetic antibacterial agent, or an inorganic antibacterial agent. The inorganic antibacterial agent has broad-spectrum antibacterial property, good temperature resistance and no drug resistance, and is a better choice. Wherein, the silver ion antibacterial agent has remarkable comprehensive effect. Particularly, silver ions are loaded on the inorganic carrier in an ion exchange mode, so that the problem of aging and discoloration of the material in use is solved, the release speed of the silver ions is reduced, and the stability of the silver ion antibacterial agent is improved. After the antibacterial agent is dispersed in the organic thermoplastic resin, the silver ion antibacterial agent can be stably coated by the organic thermoplastic resin for a long time and slowly releases silver ions, and the silver ions migrate to the surface of the organic thermoplastic polymer resin, so that the long-acting antibacterial function can be realized. Silver ion antimicrobial agents supported on glass beads are preferred in the present invention.
Preferably, the inorganic filler is talc.
It should be noted that, in addition to the use of glass fibers of various lengths or types to reinforce the thermoplastic polymer resin system, inorganic fillers can also be added to enhance various mechanical and thermodynamic properties of the material, including stiffness, creep resistance, heat distortion temperature, shrinkage rate, etc. Common inorganic fillers include calcium carbonate, talc, montmorillonite, wollastonite, titanium dioxide, and the like. For any inorganic filler, the particle size and particle size distribution are important technical indicators, and generally, the smaller the particle size and the narrower the distribution, the better the filling effect. Talc is therefore preferred as the inorganic filler in the present invention.
Preferably, the flame retardant is a silicone flame retardant and a sulfonate flame retardant.
The flame retardant may be one or more additive flame retardants or chemically bonded reactive flame retardants. Typical flame retardants include alkyl phosphates, sulfonates, aliphatic halogenated hydrocarbons, silicone flame retardants, and the like; or a compound synergistic formula of an organic nitrogen flame retardant and a phosphorus flame retardant, such as a flame retardant formed by mixing melamine and polyphosphate, or melamine salt of pentaerythritol phosphate, cyclophosphamide polymer and the like. In the present invention, silicone-based and sulfonate-based flame retardants are preferred.
Preferably, the antioxidant is a hindered phenol antioxidant AO-60 and a phosphite antioxidant 168 according to a mass ratio of 1: 1.
It should be noted that the commonly used auxiliary materials in the organic layer thermoplastic polymer material system are mainly antioxidants, stabilizers and surface treatment agents. The antioxidant and the stabilizer are used for improving the processing thermal stability of the material and the heat resistance and light aging resistance during the use process.
Preferably, the surface treatment agent is one of a coupling agent and stearic acid.
The surface treating agent can change the surface activity of glass fiber, inorganic filler and the like from hydrophilicity to lipophilicity so as to be beneficial to mixing with carrier resin. In the present invention, a silane coupling agent or stearic acid is preferable as the surface treatment agent.
Preferably, the inorganic layer is a magnesia cement board.
The inorganic layer may be an inorganic calcium silicate board, a gypsum board, or a magnesia cement board. The magnesium oxide board as a novel cement material has higher mechanical strength and rigidity (higher than calcium silicate cement), high fireproof and flame retardant properties, excellent heat and sound insulation properties, no toxicity or pollution, and 100% recovery. Magnesia cement boards are preferred as the inorganic layer in the present invention.
Preferably, the adhesive used in the adhesive layer is an acrylic or epoxy adhesive.
The organic layer and the inorganic layer are compounded by an adhesive, and the common adhesive is acrylic acid, epoxy resin and polyurethane. Acrylic-based adhesives are used primarily for bonding metals, composites and most thermoplastics with minimal surface treatment or priming and are curable at room temperature. The acrylic resin can improve the structural strength among the bonding components, and also has the properties of impact resistance, low temperature resistance, high temperature resistance and considerable service fatigue life. Epoxy-based adhesives are useful in metals, plastics, composites, concrete, wood, and foams. Epoxy resins have high bond strength and resistance to chemical attack, and cure at a relatively slow rate, but can generally be accelerated by heating. Polyurethane-based adhesives are commonly used to bond primed metals. Therefore, in the present invention, an acrylic or epoxy adhesive is preferable as the composite layer (adhesive layer).
The invention also provides a preparation method of the long-acting antibacterial composite board for the building, which comprises the following steps:
s1: weighing dry thermoplastic polymer resin particles, inorganic filler, antibacterial agent and surface treatment agent according to the parts by weight, adding the dry thermoplastic polymer resin particles, the inorganic filler, the antibacterial agent and the surface treatment agent into a high-speed mixer, uniformly mixing, weighing the flame retardant, the stabilizer, the antioxidant and the lubricant according to the parts by weight, stirring for 5-20 minutes, uniformly mixing, and discharging;
s2: adding the material in the step S1 into a double-screw extruder, fully melting and blending at 260-280 ℃, extruding, cooling and granulating;
s3: melting and plasticizing the plastic particles prepared in the step S2 at 250-270 ℃ through a single-screw extruder, then feeding the plastic particles into a flat machine head to uniformly distribute the materials along the width direction of the machine head, extruding a plate through an oral die, pressing the plate through a roller set under the traction of a traction device, sizing the thickness, cooling the plate, shaping the plate through an edge cutting device, and finally cutting the plate into polymer sheets with required length through a cutting device;
s4: respectively coating adhesives on the surfaces of the polymer sheet with the antibacterial effect and the prepared inorganic layer plate, which are opposite to each other, through glue coating rollers, and then pressing and compounding the polymer sheet and the inorganic layer plate between a pair of compounding rollers to finally obtain the required long-acting antibacterial composite plate
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the composite board is a multi-layer structural board compounded by an inorganic layer and an organic layer, wherein the organic layer is made of a high-molecular antibacterial material containing slow-release silver ion glass beads, and the inorganic layer is made of an inorganic calcium silicate board, a gypsum board or a magnesium oxide cement board; the adhesive layer is arranged between the inorganic layer and the organic layer, and the inorganic layer and the organic layer are firmly combined, so that the multilayer composite board has the advantages of organic and inorganic materials, and the layers make up the respective defects mutually to form a special composite board with integral performance.
2. In the invention, the organic polymer antibacterial material containing silver ions is used as a decorative plane material, so that the decorative plane material has the characteristics of light weight, impact resistance, excellent decoration, large mechanical and chemical property adjusting space and high stain resistance and antibacterial performance; the inorganic layer formed by inorganic materials is used as a bottom substrate, and has the advantages of high mechanical strength and rigidity, extremely high fireproof and flame retardant properties, excellent heat and sound insulation properties, wide material source, low cost and high economic benefit.
3. The organic layer contains thermoplastic polymer resin, an antibacterial agent, a flame retardant, a processing aid and the like, and the rigidity, the flexural modulus and other properties of the thermoplastic polymer resin material can be improved by adding a proper amount of inorganic filler or glass fiber.
4. The long-acting antibacterial composite board for the building has excellent physical properties of a thermoplastic polymer organic layer, realizes a long-acting slow-release antibacterial function by using the anionic antibacterial agent carried by the glass beads, and obviously improves the rigidity and the thermal stability by adding the inorganic filler; and then the composite material plate is laminated and bonded with an inorganic plate to prepare the composite material plate, has good flame retardant property, material rigidity and sound and heat insulation property, and is convenient for building installation and use.
5. According to the product requirements, the invention can also utilize printing or color matching to prepare products with different textures, colors or pattern shapes on the thermoplastic polymer layer; and finally endowing the product with the characteristics of antibiosis, flame retardance, light weight, impact resistance, high modulus, sound insulation, noise reduction and the like, thereby having wide application prospect in the fields of building decoration and the like.
6. The long-acting antibacterial composite board for the building, which is prepared by the invention, passes the test, has high antibacterial efficiency which can reach more than 99 percent, and has long antibacterial time.
7. The flame retardant performance of the prepared long-acting antibacterial composite board for the building meets the test requirement of the building fire standard GB/T8624-2012 version, the flame retardant grade reaches the B1 (B-S2-d 0) grade, and the requirements of smoke concentration and smoke toxicity are met; the composite board is detected according to the GB/T17657-2013 standard, no formaldehyde is detected, and the safety is high.
Detailed Description
The technical solutions of the present invention will be described below clearly and completely in conjunction with the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise specified, are either commercially available from conventional sources or are prepared in conventional manners.
Example 1
A long-acting antibacterial composite board for buildings comprises an organic layer, an adhesive layer and an inorganic layer; the adhesive layer compounds the organic layer and the inorganic layer together;
the organic layer is prepared from the following raw materials in parts by weight: 1-5 parts of antibacterial agent, 80-85 parts of thermoplastic polymer resin particles, 1-10 parts of flame retardant, 1-30 parts of inorganic filler, 0.05-0.1 part of antioxidant, 0.05-0.1 part of stabilizer, 0.1-1 part of surface treating agent and 0.1-0.2 part of lubricant.
Further, in another embodiment, the thermoplastic polymer resin particles are one or more of polycarbonate, acrylonitrile butadiene styrene copolymer, polyethylene terephthalate, polymethyl methacrylate, polyamide resin, and polytetrafluoroethylene.
Further, in another embodiment, the antimicrobial agent is a silver ion antimicrobial agent.
Further, in another embodiment, the inorganic filler is talc.
Further, in another embodiment, the flame retardant is a silicone based and sulfonate based flame retardant.
Further, in another embodiment, the antioxidant is a hindered phenol antioxidant AO-60 and a phosphite antioxidant 168 in a mass ratio of 1: 1.
Further, in another embodiment, the surface treatment agent is one of a coupling agent and stearic acid; the coupling agent is preferably a silane coupling agent.
Further, in another embodiment, the inorganic layer is a magnesia cement board.
Further, in another embodiment, the adhesive used in the adhesive layer is an acrylic or epoxy adhesive.
Further, in another embodiment, the method for preparing the long-acting antibacterial composite board for buildings comprises the following steps:
s1: weighing dry thermoplastic polymer resin particles, inorganic filler, antibacterial agent and surface treatment agent according to the parts by weight, adding the dry thermoplastic polymer resin particles, the inorganic filler, the antibacterial agent and the surface treatment agent into a high-speed mixer, uniformly mixing, weighing the flame retardant, the stabilizer, the antioxidant and the lubricant according to the parts by weight, stirring for 5-20 minutes, uniformly mixing, and discharging;
s2: adding the material in the step S1 into a double-screw extruder, fully melting and blending at 260-280 ℃, extruding, cooling and granulating;
s3: melting and plasticizing the plastic particles prepared in the step S2 at 250-270 ℃ through a single-screw extruder, then feeding the plastic particles into a flat machine head to uniformly distribute the materials along the width direction of the machine head, extruding a plate through an oral die, pressing the plate through a roller set under the traction of a traction device, sizing the thickness, cooling the plate, shaping the plate through an edge cutting device, and finally cutting the plate into polymer sheets with required length through a cutting device;
s4: and (4) respectively coating adhesives on the surfaces of the polymer sheet with the antibacterial effect and the prepared inorganic layer plate, which are opposite to each other, through glue coating rollers, and then pressing and compounding the polymer sheet and the inorganic layer plate between a pair of compounding rollers to finally obtain the required long-acting antibacterial composite plate.
Example 2
A long-acting antibacterial composite board for buildings comprises an organic layer, an adhesive layer and an inorganic layer; the thermoplastic polymer resin particles of the organic layer are mixed particles of Polycarbonate (PC) and Polytetrafluoroethylene (PTFE), the adhesive of the adhesive layer is an epoxy adhesive, and the inorganic layer is a magnesia cement board; the adhesive layer compounds the organic layer and the inorganic layer together;
the organic layer is prepared from the following raw materials in parts by weight: 82 parts of polycarbonate, 1 part of silver ion antibacterial agent, 0.6 part of sulfonate flame retardant, 0.2 part of Polytetrafluoroethylene (PTFE), 16 parts of talcum powder, 1 part of silane coupling agent, 0.1 part of antioxidant, 0.1 part of stabilizer and 0.2 part of lubricant.
In this example, the polycarbonate has a melt index MFR of 7; the talcum powder is of a plastic extrusion grade, and the average size of the talcum powder is 10 micrometers; the Polytetrafluoroethylene (PTFE) is a powdery pure powder type; the antioxidant is a mixture of a hindered phenol antioxidant AO-60 and a phosphite antioxidant 168 according to a mass ratio of 1: 1; the inorganic magnesia cement board has the thickness of 6 mm and smooth surface.
The formula is prepared according to the following steps:
s1: respectively weighing dry polycarbonate, a silver ion antibacterial agent, polytetrafluoroethylene, talcum powder and a silane coupling agent according to the parts by weight, adding the materials into a high-speed mixer, uniformly mixing, then weighing an antioxidant, a stabilizer, a lubricant and a sulfonate flame retardant according to the parts by weight, adding the materials into the high-speed mixer, stirring for 5-20 minutes, and discharging after uniform mixing;
s2: and (2) adding the material obtained in the step (S1) into a double-screw extruder, fully melting and blending at 270 ℃, extruding, cooling and granulating.
S3: melting and plasticizing the plastic particles prepared in the step S2 at 260 ℃ through a single-screw extruder, then feeding the plastic particles into a flat machine head to uniformly distribute the materials along the width direction of the machine head, extruding sheets through an oral die, pressing the sheets through a roller set under the traction of a traction device, sizing the sheets, cooling the sheets, shaping the sheets through a trimming device, and finally cutting the sheets into polymer sheets with the thickness of 0.8 mm and the antibacterial effect;
s4: and (3) respectively coating epoxy adhesives on the surfaces of the polymer sheet opposite to the inorganic magnesia cement board through glue coating rollers on the sheet prepared in the step (S3) and the prepared inorganic magnesia cement board, and then performing pressure compounding between a pair of compounding rollers to finally obtain the multilayer long-acting antibacterial composite board.
The long-acting antibacterial composite board is used for building occasions, particularly building markets such as medical health and cold chain transportation, and therefore, the following performance tests are required for the markets:
(1) And (3) antibacterial property: since staphylococcus aureus and escherichia coli represent gram-positive and gram-negative bacteria, respectively, and represent the majority of species, tests were also conducted mainly against these two bacteria.
(2) Durability: in the application of the plate, the plate inevitably contacts various devices such as sterilized water or a sterilizing lamp, so that whether the durable antibacterial property of the plate can be maintained after the plate is damaged is also a key.
(3) Flame retardance: in some occasions, such as the building industry, the building material can be used only when reaching a certain flame retardant level, for example, at least the requirement of GB8624B1 is met.
(4) Safety (contact): whether the plate contains harmful substances such as formaldehyde, heavy metals and the like.
Through tests, the long-acting antibacterial composite board for the building has the following performance index representation results:
(1) Antibacterial property: with staphylococcus aureus and escherichia coli according to ISO22196:2011 the test shows that the antibacterial activity values are 2.9 and 2.1 respectively, and the antibacterial efficiency is more than 99%. (2) durability test: according to the GBT21866-2008 standard, a sample to be detected is placed under an ultraviolet lamp, after the sample is irradiated for 100 hours, the antibacterial test is repeatedly carried out, the antibacterial rates of Escherichia coli and staphylococcus aureus are both more than 99%, and the sample is classified as I grade according to the standard.
(3) Flame retardance: according to the testing requirements of the building fire standard GB/T8624-2012 edition, the flame retardant grade of the composite board reaches the B1 (B-S2-d 0) grade, and simultaneously the requirements of smoke concentration and smoke toxicity are met.
(4) Safety is as follows: the composite board disclosed by the invention is detected according to the GB/T17657-2013 standard, no formaldehyde is detected, and the non-toxic requirement is met.
In conclusion, the long-acting antibacterial composite board for buildings disclosed by the invention has excellent physical properties of a thermoplastic polymer organic layer, realizes a long-acting slow-release antibacterial function by using the anionic antibacterial agent carried by the glass beads, and obviously improves the rigidity and the thermal stability by adding the inorganic filler; the composite material plate prepared by laminating and bonding the inorganic plate has good flame retardant property, material rigidity and sound and heat insulation performance, and is convenient for building installation and use. Through performance tests, the long-acting antibacterial composite board for the building has high antibacterial efficiency which can reach over 99 percent and has long antibacterial time; the board does not contain harmful substances such as formaldehyde and the like, and has high safety.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (2)

1. A long-acting antibacterial composite board for buildings is characterized by comprising an organic layer, an adhesive layer and an inorganic layer; the adhesive layer compounds the organic layer and the inorganic layer together;
the organic layer is prepared from the following raw materials in parts by weight: 1 to 5 parts of antibacterial agent, 80 to 85 parts of thermoplastic polymer resin particles, 1 to 10 parts of flame retardant, 1 to 30 parts of inorganic filler, 0.05 to 0.1 part of antioxidant, 0.05 to 0.1 part of stabilizer, 0.1 to 1 part of surface treating agent and 0.1 to 0.2 part of lubricant;
the thermoplastic polymer resin particles are mixed particles of Polycarbonate (PC) and Polytetrafluoroethylene (PTFE);
the antibacterial agent is a silver ion antibacterial agent;
the inorganic filler is talcum powder;
the flame retardant is organic silicon flame retardant and sulfonate flame retardant;
the antioxidant is a mixture of hindered phenol antioxidant AO-60 and phosphite antioxidant 168 according to a mass ratio of 1: 1;
the surface treating agent is one of a coupling agent and stearic acid;
the inorganic layer is a magnesium oxide cement board;
the adhesive used by the adhesive layer is acrylic or epoxy resin adhesive.
2. The method for preparing the long-acting antibacterial composite board for the building according to claim 1, characterized by comprising the following steps:
s1: weighing dry thermoplastic polymer resin particles, inorganic filler, antibacterial agent and surface treatment agent according to the parts by weight, adding the dry thermoplastic polymer resin particles, the inorganic filler, the antibacterial agent and the surface treatment agent into a high-speed mixer, uniformly mixing, weighing the flame retardant, the stabilizer, the antioxidant and the lubricant according to the parts by weight, stirring for 5-20 minutes, uniformly mixing, and discharging;
s2: adding the material in the step S1 into a double-screw extruder, fully melting and blending at 260-280 ℃, extruding, cooling and granulating;
s3: melting and plasticizing the plastic particles prepared in the step S2 at 250-270 ℃ through a single-screw extruder, then feeding the plastic particles into a flat machine head to uniformly distribute the materials along the width direction of the machine head, extruding a plate through an oral die, pressing the plate through a roller set under the traction of a traction device, sizing the thickness, cooling the plate, shaping the plate through an edge cutting device, and finally cutting the plate into polymer sheets with required length through a cutting device;
s4: and (4) respectively coating adhesives on the surfaces of the polymer sheet with the antibacterial effect and the prepared inorganic layer plate, which are opposite to each other, through glue coating rollers, and then pressing and compounding the polymer sheet and the inorganic layer plate between a pair of compounding rollers to finally obtain the required long-acting antibacterial composite plate.
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JPH10146913A (en) * 1996-11-19 1998-06-02 Dainippon Printing Co Ltd Inorganic decorative board having antibacterial property and production method thereof
CN1156635C (en) * 2002-03-07 2004-07-07 华东理工大学 Light heat-isolating, high strength, sound-isolating and wear-resisting composition wall material
CN104744875A (en) * 2015-03-24 2015-07-01 合肥会通新材料有限公司 Preparation method of antibacterial flame-retardant ABS material
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