Adhesive edge banding strip for furniture and preparation method thereof

Abstract

The invention relates to the field of edge banding strips and discloses an adhesive edge banding strip for furniture and a preparation method thereof. The edge banding strip comprises an edge banding strip substrate layer and a hot melt adhesive layer, wherein the edge banding strip substrate layer comprises: polyvinyl chloride, modified nano-calcium carbonate, hollow antibacterial microspheres, chlorinated polyethylene, and an additive; the modified nano-calcium carbonate is grafted onto the surface of the nano-calcium carbonate by using a functionalized coupling agent and then reacted with 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride to form the strip; the functionalized coupling agent is reacted by N-(4-aminophenyl)maleimide with 3-mercaptopropyltriethoxysilane; the hollow antibacterial microspheres are prepared by using an antibacterial monomer prepared by reacting 5-hydroxymethylthiazole and isocyanoethyl methacrylate, sodium p-styrene sulfonate, N,N-methylenebisacrylamide, n-hexane, and cetyltrimethylammonium bromide through emulsion interfacial polymerization and quaternization reaction. The edge banding strip prepared by the invention has excellent tensile strength, aging resistance, heat resistance, heat insulation effect, and antibacterial performance.

Description

Technical Field

[0001] The invention belongs to the technical field of edge banding strips, and particularly relates to an adhesive edge banding strip for furniture and a preparation method thereof. Background Art

[0002] As consumers demand more aesthetics and quality for furniture, cabinets, doors, and windows, the importance of edge banding as an edge sealing material is growing. Edge banding's primary functions include enhancing aesthetics, insulating against moisture, strengthening the stability of cuts, and providing resistance to wear, impact, chemical corrosion, and formaldehyde emissions, thus safeguarding both the product's appearance and functionality. The rapid development of the furniture industry and the expansion of the market for panel and custom furniture are further driving demand for edge banding.

[0003] The existing edge banding strips are mainly polyvinyl chloride edge banding strips. Polyvinyl chloride edge banding strips are thermoplastic coils made of polyvinyl chloride as the main raw material, with additives added, mixed and pressed together. However, polyvinyl chloride has poor heat resistance and is prone to aging during use, which makes it easy to deform at high temperatures, thereby causing quality problems for edge banding strips and furniture panels. In addition, the edge banding strips are very easy to absorb bacteria and dust in the air during actual use after installation, thereby affecting the appearance and quality of the polyvinyl chloride edge banding strips. In order to reduce the mildew of furniture panels, traditional edge banding strips have antibacterial effects, mainly by directly adding antibacterial agents, such as nano-silver powder, to the raw materials of the edge banding strips, thereby killing or inhibiting the reproduction of bacteria on the edge banding strips within a certain period of time. However, since the antibacterial agent and the raw materials of the edge banding strips are blended, the antibacterial performance is poor. At the same time, simple physical mixing easily causes the precipitation of the antibacterial agent. Therefore, it is actually difficult to ensure the long-lasting antibacterial effect of the edge banding strips, and it is difficult to meet the needs of high-end applications. Summary of the Invention

[0004] In order to solve the deficiencies mentioned in the above background technology, the purpose of the present invention is to provide a furniture edge banding strip with glue and a preparation method thereof. By adding modified nano-calcium carbonate and hollow antibacterial microspheres, the edge banding strip is given excellent tensile strength, aging resistance, heat resistance, thermal insulation effect and antibacterial properties.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A furniture adhesive edge banding strip comprises an edge banding strip base material layer and a hot melt adhesive layer composited with the edge banding strip base material layer, wherein the edge banding strip base material layer comprises the following components in parts by weight: 60-80 parts of polyvinyl chloride, 10-30 parts of modified nano-calcium carbonate, 2-5 parts of hollow antibacterial microspheres, 2-4 parts of a stabilizer, 2-4 parts of chlorinated polyethylene, 2-4 parts of a plasticizer, 0.1-0.5 parts of stearic acid, and 0.1-0.5 parts of a lubricant;

[0007] The modified nano-calcium carbonate is prepared by grafting a functionalized coupling agent onto the surface of the nano-calcium carbonate, followed by a reaction with 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride; the functionalized coupling agent is prepared by reacting maleic anhydride and p-phenylenediamine to obtain an antioxidant, N-(4-aminophenyl) maleimide, followed by a thiol-ene click reaction with 3-mercaptopropyltriethoxysilane;

[0008] The hollow antibacterial microspheres are prepared by using an antibacterial monomer and sodium p-styrene sulfonate as copolymer monomers, N,N-methylenebisacrylamide as a cross-linking agent, n-hexane as a pore-forming agent, and hexadecyltrimethylammonium bromide as an ion exchange monomer, through emulsion interfacial polymerization and quaternization reaction; the antibacterial monomer is prepared by reacting 5-hydroxymethylthiazole and isocyanoethyl methacrylate.

[0009] Preferably, the stabilizer is one of a calcium zinc stabilizer and an organic tin stabilizer; and the lubricant is one of a polyethylene wax and an oxidized polyethylene wax.

[0010] Preferably, the plasticizer is one or more combinations of dioctyl terephthalate, dioctyl phthalate, dioctyl adipate, dimethyl phthalate, and diisodecyl phthalate.

[0011] Preferably, the preparation method of the modified nano-calcium carbonate comprises the following steps:

[0012] (1) dissolving maleic anhydride in xylene at 70-85° C. in a nitrogen atmosphere to obtain a maleic anhydride solution, dissolving p-phenylenediamine in chloroform and adding the solution to the maleic anhydride solution, adding polyphosphoric acid to the reaction, stirring at 70-85° C. for 2-3 hours, and after the reaction is completed, centrifuging and washing to remove unreacted products, then recrystallizing with isopropanol, filtering, and drying to prepare N-(4-aminophenyl)maleimide;

[0013] (2) N-(4-aminophenyl)maleimide and 3-mercaptopropyltriethoxysilane were placed in a reactor, acetone solvent was added and stirred evenly, and then the temperature was raised to 40-55° C. under a nitrogen atmosphere, and trimethylamine catalyst was subsequently added and stirred for 4-5 hours to prepare a functionalized coupling agent;

[0014] (3) Nano-calcium carbonate is ultrasonically dispersed in a mixed solvent of ethanol and deionized water, and the pH value of the system is adjusted to 9-10 with ammonia water. Then, the temperature is raised to 50-65° C. under a nitrogen atmosphere, and a functionalized coupling agent is added and stirred for 4-5 hours. After the reaction is completed, the mixture is centrifuged, washed, and dried to prepare functionalized nano-calcium carbonate.

[0015] (4) 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid is dissolved in dichloromethane, and then thionyl chloride is added. The mixture is refluxed under a nitrogen atmosphere for 4 to 6 hours. After the reaction is completed, the unreacted product is removed under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl chloride;

[0016] (5) The functionalized nano-calcium carbonate was ultrasonically dispersed in a toluene solvent, and then a mixed solution of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride and toluene was added, followed by dropwise addition of triethylamine. The temperature was raised to 70-85°C under a nitrogen atmosphere, and the reaction was stirred for 20-24 hours. After the reaction was completed, the modified nano-calcium carbonate was prepared by filtration, washing, and drying.

[0017] Preferably, in step (2), the molar ratio of N-(4-aminophenyl)maleimide to 3-mercaptopropyltriethoxysilane is 1:1 to 1.2.

[0018] Preferably, the method for preparing the hollow antibacterial microspheres comprises the following steps:

[0019] A. Place 5-hydroxymethylthiazole, isocyanoethyl methacrylate, and dibutyltin dilaurate in a reactor, add acetone solvent, raise the temperature to 40-50°C, stir and react for 8-12 hours, and after the reaction is completed, perform rotary evaporation, wash, and dry to prepare an antibacterial monomer;

[0020] B. Dissolve polyvinyl alcohol and cetyltrimethylammonium bromide in deionized water to obtain solution 1, and mix antibacterial monomer, N,N-methylenebisacrylamide, azobisisobutyronitrile, n-hexane and sodium p-styrenesulfonate to obtain solution 2.

[0021] C. Take part of solution 1 in a reactor and place it at 75-80°C for pre-reaction. Then, mix the remaining solution 1 and solution 2 and add them dropwise to the reactor, stir and react for 4-5 hours. The obtained emulsion is centrifuged with deionized water and then vacuum freeze-dried. Then, the obtained product and hexadecyltrimethylammonium bromide are dissolved in deionized water, stirred at 30-35°C for 2-3 hours, and then placed at room temperature. After washing and drying, hollow antibacterial microspheres are prepared.

[0022] Preferably, in step B, the molar ratio of the antibacterial monomer, N,N-methylenebisacrylamide and sodium p-styrenesulfonate is 2-3:1:1.

[0023] Preferably, the method for preparing the edge banding substrate layer comprises the following steps:

[0024] S1. Weighing each component by weight, mixing polyvinyl chloride, modified nano-calcium carbonate, hollow antibacterial microspheres, stabilizer, chlorinated polyethylene, plasticizer, stearic acid and lubricant uniformly to obtain a mixture;

[0025] S2, the mixed material is granulated by a twin-screw granulator and then cooled to obtain granular material;

[0026] S3, the pellets are extruded through a twin-screw extruder to obtain a sheet-like substrate;

[0027] S4, performing surface embossing treatment and cooling and shaping treatment on the sheet substrate in sequence to obtain an edge banding strip substrate layer.

[0028] Preferably, the granulation temperature in step S2 is: zone 1: 150-155°C, zone 2: 155-160°C, zone 3: 155-160°C, zone 4: 155-160°C, zone 5: 158-165°C.

[0029] A method for preparing an adhesive edge banding strip for furniture comprises the following steps: compounding hot melt adhesive onto the back of an edge banding strip substrate layer by a glue coating machine to prepare the adhesive edge banding strip for furniture.

[0030] Beneficial effects of the present invention:

[0031] The invention uses maleic anhydride and p-phenylenediamine to react to obtain an antioxidant N-(4-aminophenyl)maleimide, then uses 3-mercaptopropyltriethoxysilane as a bridging agent to react with N-(4-aminophenyl)maleimide to undergo a thiol-ene click reaction, and then undergoes a hydrolysis-condensation reaction with nano-calcium carbonate, thereby grafting N-(4-aminophenyl)maleimide onto the surface of the nano-calcium carbonate to prepare an antioxidant functionalized nano-calcium carbonate. At the same time, the invention uses thionyl chloride to chlorinate a hindered phenol antioxidant 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, and then utilizes the amino groups introduced on the surface of the functionalized nano-calcium carbonate to react with 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid. The modified nano-calcium carbonate is prepared by reacting tert-butyl-4-hydroxyphenyl) propionyl chloride, thereby combining the hindered phenol antioxidant and the amine antioxidant with the surface of the nano-calcium carbonate through a strong chemical bond, avoiding the problem of antioxidant migration and precipitation, and giving the material a long-lasting antioxidant function. In addition, the grafting reaction introduces the imide structure containing a planar five-membered ring and a strong polar carbonyl group in the molecular structure of N-(4-aminophenyl)maleimide, giving the material good heat resistance and enhancing the compatibility of the modified nano-calcium carbonate with polyvinyl chloride. In addition, the grafting reaction is conducive to promoting the relatively uniform dispersion of the nano-calcium carbonate in the matrix, avoiding the performance defects caused by the agglomeration of the nano-calcium carbonate.

[0032] The present invention utilizes 5-hydroxymethylthiazole and isocyanoethyl methacrylate to react to generate an antibacterial monomer containing a double bond structure and an antibacterial thiazole group, and then adopts emulsion interfacial polymerization and quaternization reaction to synthesize hollow antibacterial microspheres, wherein the hydrophobic antibacterial monomer and hydrophilic sodium p-styrene sulfonate are copolymerized as comonomers, N,N-methylenebisacrylamide is used as a crosslinking agent, and n-hexane is used as a pore-forming agent. The copolymer hollow microspheres protected by n-hexane droplets are obtained by copolymerizing the hydrophilic / hydrophobic monomers at the oil / water phase interface. The microspheres with a hollow structure have long-lasting interfacial adhesion and good thermal insulation properties. The hollow microspheres containing the hydrophilic sodium sulfonate group are further subjected to an ion exchange quaternization reaction with hexadecyltrimethylammonium bromide to prepare the hollow antibacterial microspheres, thereby introducing quaternary ammonium cations and thiazole monomers with antibacterial activity into the hollow antibacterial microsphere skeleton, and the antibacterial units are released when in contact with the bacterial surface, thereby achieving excellent antibacterial properties. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] Example 1 A method for preparing modified nano-calcium carbonate comprises the following steps:

[0035] (1) At 80°C and a nitrogen atmosphere, 21 g of maleic anhydride was dissolved in 300 mL of xylene to obtain a maleic anhydride solution. 24 g of p-phenylenediamine was dissolved in 300 mL of chloroform and added to the maleic anhydride solution. 0.3 g of polyphosphoric acid was added to the reaction, and the mixture was stirred at 80°C for 2 h. After the reaction was completed, the mixture was centrifuged and washed to remove unreacted matter, and then recrystallized from isopropanol, filtered, and dried to prepare N-(4-aminophenyl)maleimide.

[0036] (2) 9.4 g of N-(4-aminophenyl)maleimide and 11.9 g of 3-mercaptopropyltriethoxysilane were placed in a reactor, 300 mL of acetone solvent was added and stirred evenly, and then the temperature was raised to 50 ° C under a nitrogen atmosphere, followed by the addition of 2 g of trimethylamine catalyst and the reaction was stirred for 5 h to prepare a functionalized coupling agent;

[0037] (3) 5 g of nano-calcium carbonate was ultrasonically dispersed in a mixed solvent of 90 mL of ethanol and 20 mL of deionized water. The pH value of the system was adjusted to 10 with ammonia water. The temperature was then raised to 60°C under a nitrogen atmosphere. 2.6 g of a functionalized coupling agent was added and stirred for 5 h. After the reaction was completed, the mixture was centrifuged, washed, and dried to obtain functionalized nano-calcium carbonate.

[0038] (4) 2.8 g of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid was dissolved in 50 mL of dichloromethane, and then 2 mL of thionyl chloride was added. The mixture was refluxed under a nitrogen atmosphere for 4 h. After the reaction was completed, the unreacted product was removed under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl chloride;

[0039] (5) Take 5 g of functionalized nano-calcium carbonate and ultrasonically disperse it in 120 mL of toluene solvent, then add a mixed solution of 1.9 g of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride and 20 mL of toluene, then add 1.5 g of triethylamine dropwise, heat to 80 ° C under a nitrogen atmosphere, stir and react for 24 h, and after the reaction is completed, filter, wash and dry to prepare modified nano-calcium carbonate.

[0040] Example 2 A method for preparing hollow antibacterial microspheres comprises the following steps:

[0041] A. Take 2.3g of 5-hydroxymethylthiazole, 3.1g of isocyanoethyl methacrylate and 0.002g of dibutyltin dilaurate in a reactor, add 100mL of acetone solvent, raise the temperature to 45°C, stir and react for 12h, and after the reaction is completed, carry out rotary evaporation, wash and dry to prepare an antibacterial monomer;

[0042] B. Dissolve 2.5 g of polyvinyl alcohol and 0.08 g of hexadecyltrimethylammonium bromide in 60 mL of deionized water to obtain solution 1. Mix 6.7 g of antibacterial monomer, 1.5 g of N,N-methylenebisacrylamide, 0.2 g of azobisisobutyronitrile, 3 mL of n-hexane, and 2.1 g of sodium p-styrenesulfonate to obtain solution 2.

[0043] C. Take 50 mL of solution 1 in a reactor and place it at 80°C for pre-reaction. Then, mix the remaining solution 1 and solution 2 and add them dropwise to the reactor. Stir and react for 5 hours. The resulting emulsion is centrifuged with deionized water and then vacuum freeze-dried. Then, the resulting product and 0.7 g of hexadecyltrimethylammonium bromide are dissolved in 60 mL of deionized water, stirred at 30°C for 3 hours, and then placed at room temperature. After washing and drying, hollow antibacterial microspheres are prepared.

[0044] Example 3: An edge banding strip substrate layer comprises the following components in parts by weight:

[0045] 63 parts of polyvinyl chloride, 11 parts of modified nano-calcium carbonate prepared in Example 1, 2.5 parts of hollow antibacterial microspheres prepared in Example 2, 2.2 parts of calcium zinc stabilizer, 2 parts of chlorinated polyethylene, 2 parts of plasticizer dioctyl terephthalate, 0.2 parts of stearic acid, and 0.1 parts of lubricant polyethylene wax.

[0046] The method for preparing the edge banding substrate layer comprises the following steps:

[0047] S1. Weighing each component by weight, mixing polyvinyl chloride, modified nano-calcium carbonate, hollow antibacterial microspheres, stabilizer, chlorinated polyethylene, plasticizer, stearic acid and lubricant uniformly to obtain a mixture;

[0048] S2. The mixed material is granulated by a twin-screw granulator and then cooled. The granulation temperatures are: zone 1: 155°C, zone 2: 160°C, zone 3: 160°C, zone 4: 160°C, zone 5: 158°C to obtain granules.

[0049] S3, the pellets are extruded through a twin-screw extruder to obtain a sheet-like substrate;

[0050] S4, performing surface embossing treatment and cooling and shaping treatment on the sheet substrate in sequence to obtain an edge banding strip substrate layer.

[0051] A method for preparing an adhesive edge banding strip for furniture comprises the following steps: compounding EVA hot melt adhesive onto the back side of an edge banding strip substrate layer by a glue coating machine to prepare the adhesive edge banding strip for furniture.

[0052] Example 4: An edge banding strip substrate layer comprises the following components in parts by weight:

[0053] 72 parts of polyvinyl chloride, 18 parts of modified nano-calcium carbonate prepared in Example 1, 3.5 parts of hollow antibacterial microspheres prepared in Example 2, 3 parts of calcium zinc stabilizer, 3 parts of chlorinated polyethylene, 3 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.2 parts of lubricant oxidized polyethylene wax.

[0054] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0055] Example 5: An edge banding strip substrate layer comprises the following components in parts by weight:

[0056] 77 parts of polyvinyl chloride, 23 parts of modified nano-calcium carbonate prepared in Example 1, 4 parts of hollow antibacterial microspheres prepared in Example 2, 3 parts of calcium zinc stabilizer, 3.5 parts of chlorinated polyethylene, 3.5 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.4 parts of lubricant polyethylene wax.

[0057] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0058] Comparative Example 1: An edge banding substrate layer comprises the following components in parts by weight:

[0059] 77 parts of polyvinyl chloride, 23 parts of functionalized nano-calcium carbonate prepared in Example 1, 4 parts of hollow antibacterial microspheres prepared in Example 2, 3 parts of calcium zinc stabilizer, 3.5 parts of chlorinated polyethylene, 3.5 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.4 parts of lubricant polyethylene wax.

[0060] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0061] Comparative Example 2: An edge banding substrate layer comprises the following components in parts by weight:

[0062] 77 parts of polyvinyl chloride, 23 parts of nano-calcium carbonate, 4 parts of hollow antibacterial microspheres prepared in Example 2, 3 parts of calcium zinc stabilizer, 3.5 parts of chlorinated polyethylene, 3.5 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.4 parts of lubricant polyethylene wax.

[0063] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0064] Comparative Example 3: An edge banding substrate layer comprises the following components in parts by weight:

[0065] 77 parts of polyvinyl chloride, 23 parts of modified nano-calcium carbonate prepared in Example 1, 4 parts of antibacterial monomer prepared in Example 2, 3 parts of calcium zinc stabilizer, 3.5 parts of chlorinated polyethylene, 3.5 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.4 parts of lubricant polyethylene wax.

[0066] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0067] Comparative Example 4: An edge banding substrate layer comprises the following components in parts by weight:

[0068] 77 parts of polyvinyl chloride, 23 parts of modified nano-calcium carbonate prepared in Example 1, 3 parts of calcium zinc stabilizer, 3.5 parts of chlorinated polyethylene, 3.5 parts of plasticizer dioctyl terephthalate, 0.4 parts of stearic acid, and 0.4 parts of lubricant polyethylene wax.

[0069] The preparation method of the edge banding substrate layer and the adhesive edge banding for furniture is the same as that in Example 3.

[0070] Performance testing

[0071] The performance tests of the edge banding substrate layers prepared in Examples 3-5 and Comparative Examples 1-4 were performed: a tensile performance test was performed using a universal mechanical testing machine in accordance with the GB / T 1040.2-2022 standard; and the tensile strength change rate was tested after aging at 100°C for 24 hours and 48 hours to evaluate the heat-oxidative aging resistance of the samples; the Vicat softening point was tested in accordance with GB / T1633-2000 to evaluate the heat resistance of the samples; the thermal conductivity was tested using a thermal conductivity meter to evaluate the thermal insulation performance of the samples; and the antibacterial performance of the samples was evaluated in accordance with GB / T 31402-2023. The data results are shown in Table 1.

[0072] Table 1 Test results of sample performance

[0073]

[0074] It can be seen from the data in Table 1 that the edge banding substrates prepared in Examples 3-5 of the present invention have high tensile strength and good thermal insulation effect. After aging at 100°C for 24 hours and 48 hours, they still have high tensile strength and excellent aging resistance. At the same time, they have excellent heat resistance and antibacterial properties. In Comparative Example 1, the modified nano-calcium carbonate was replaced with functionalized nano-calcium carbonate in equal amounts, and the measured tensile strength change rate was significantly different from that of Examples 3-5. The reason was that the hindered phenol antioxidant was not grafted. In Comparative Example 2, the nano-calcium carbonate was not modified, and the measured tensile strength, tensile strength change rate and Vicat softening point were lower than those of Examples 3-5, indicating that modifying the nano-calcium carbonate can improve the mechanical properties, aging resistance and heat resistance of the material. In Comparative Example 3, the hollow antibacterial microspheres were replaced with antibacterial monomers in equal amounts, and no hollow antibacterial microsphere component was added to Comparative Example 4. The measured thermal conductivity of Comparative Example 3-4 was higher than that of Example 3-5, and the antibacterial rate was lower, indicating that the addition of hollow antibacterial microspheres can improve the thermal insulation and antibacterial properties of the material to a certain extent, and Comparative Example 3 has a higher antibacterial rate than Comparative Example 4, indicating that the added antibacterial monomer has certain antibacterial properties.

[0075] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0076] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A furniture edge banding strip, characterized in that: It includes an edge banding strip base material layer and a hot melt adhesive layer composited with the edge banding strip base material layer, wherein the edge banding strip base material layer includes the following components in parts by weight: 60-80 parts of polyvinyl chloride, 10-30 parts of modified nano-calcium carbonate, 2-5 parts of hollow antibacterial microspheres, 2-4 parts of stabilizer, 2-4 parts of chlorinated polyethylene, 2-4 parts of plasticizer, 0.1-0.5 parts of stearic acid, and 0.1-0.5 parts of lubricant; The modified nano-calcium carbonate is prepared by grafting a functionalized coupling agent onto the surface of the nano-calcium carbonate, followed by a reaction with 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride; the functionalized coupling agent is prepared by reacting maleic anhydride and p-phenylenediamine to obtain an antioxidant, N-(4-aminophenyl) maleimide, followed by a thiol-ene click reaction with 3-mercaptopropyltriethoxysilane; The hollow antibacterial microspheres are prepared by using an antibacterial monomer and sodium p-styrene sulfonate as copolymer monomers, N,N-methylenebisacrylamide as a cross-linking agent, n-hexane as a pore-forming agent, and hexadecyltrimethylammonium bromide as an ion exchange monomer, through emulsion interfacial polymerization and quaternization reaction; the antibacterial monomer is prepared by reacting 5-hydroxymethylthiazole and isocyanoethyl methacrylate.

2. The adhesive edge banding for furniture according to claim 1, characterized in that: The stabilizer is one of a calcium zinc stabilizer and an organic tin stabilizer; the lubricant is one of a polyethylene wax and an oxidized polyethylene wax.

3. The adhesive edge banding for furniture according to claim 1, characterized in that: The plasticizer is one or more combinations of dioctyl terephthalate, dioctyl phthalate, dioctyl adipate, dimethyl phthalate, and diisodecyl phthalate.

4. The adhesive edge banding for furniture according to claim 1, characterized in that: The preparation method of the modified nano calcium carbonate comprises the following steps: (1) dissolving maleic anhydride in xylene at 70-85° C. in a nitrogen atmosphere to obtain a maleic anhydride solution, dissolving p-phenylenediamine in chloroform and adding the solution to the maleic anhydride solution, adding polyphosphoric acid to the reaction, stirring at 70-85° C. for 2-3 hours, and after the reaction is completed, centrifuging and washing to remove unreacted products, then recrystallizing with isopropanol, filtering, and drying to prepare N-(4-aminophenyl)maleimide; (2) N-(4-aminophenyl)maleimide and 3-mercaptopropyltriethoxysilane were placed in a reactor, acetone solvent was added and stirred evenly, and then the temperature was raised to 40-55° C. under a nitrogen atmosphere, and trimethylamine catalyst was subsequently added and stirred for 4-5 hours to prepare a functionalized coupling agent; (3) Nano-calcium carbonate is ultrasonically dispersed in a mixed solvent of ethanol and deionized water, and the pH value of the system is adjusted to 9-10 with ammonia water. Then, the temperature is raised to 50-65° C. under a nitrogen atmosphere, and a functionalized coupling agent is added and stirred for 4-5 hours. After the reaction is completed, the mixture is centrifuged, washed, and dried to prepare functionalized nano-calcium carbonate. (4) 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid is dissolved in dichloromethane, and then thionyl chloride is added. The mixture is refluxed under a nitrogen atmosphere for 4 to 6 hours. After the reaction is completed, the unreacted product is removed under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl chloride; (5) The functionalized nano-calcium carbonate was ultrasonically dispersed in a toluene solvent, and then a mixed solution of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride and toluene was added, followed by dropwise addition of triethylamine. The temperature was raised to 70-85°C under a nitrogen atmosphere, and the reaction was stirred for 20-24 hours. After the reaction was completed, the modified nano-calcium carbonate was prepared by filtration, washing, and drying.

5. The adhesive edge banding for furniture according to claim 4, characterized in that: In the step (2), the molar ratio of N-(4-aminophenyl)maleimide to 3-mercaptopropyltriethoxysilane is 1:1 to 1.

2.

6. The adhesive edge banding for furniture according to claim 1, characterized in that: The preparation method of the hollow antibacterial microspheres comprises the following steps: A. Place 5-hydroxymethylthiazole, isocyanoethyl methacrylate, and dibutyltin dilaurate in a reactor, add acetone solvent, raise the temperature to 40-50°C, stir and react for 8-12 hours, and after the reaction is completed, perform rotary evaporation, wash, and dry to prepare an antibacterial monomer; B. Dissolve polyvinyl alcohol and cetyltrimethylammonium bromide in deionized water to obtain solution 1, and mix antibacterial monomer, N,N-methylenebisacrylamide, azobisisobutyronitrile, n-hexane and sodium p-styrenesulfonate to obtain solution 2. C. Take part of solution 1 in a reactor and place it at 75-80°C for pre-reaction. Then, mix the remaining solution 1 and solution 2 and add them dropwise to the reactor, stir and react for 4-5 hours. The obtained emulsion is centrifuged with deionized water and then vacuum freeze-dried. Then, the obtained product and hexadecyltrimethylammonium bromide are dissolved in deionized water, stirred at 30-35°C for 2-3 hours, and then placed at room temperature. After washing and drying, hollow antibacterial microspheres are prepared.

7. The adhesive edge banding for furniture according to claim 6, characterized in that: In step B, the molar ratio of the antibacterial monomer, N,N-methylenebisacrylamide and sodium p-styrenesulfonate is 2-3:1:

1.

8. The adhesive edge banding for furniture according to claim 1, characterized in that: The method for preparing the edge banding substrate layer comprises the following steps: S1. Weighing each component by weight, mixing polyvinyl chloride, modified nano-calcium carbonate, hollow antibacterial microspheres, stabilizer, chlorinated polyethylene, plasticizer, stearic acid and lubricant uniformly to obtain a mixture; S2, the mixed material is granulated by a twin-screw granulator and then cooled to obtain granular material; S3, the pellets are extruded through a twin-screw extruder to obtain a sheet-like substrate; S4, performing surface embossing treatment and cooling and shaping treatment on the sheet substrate in sequence to obtain an edge banding strip substrate layer.

9. The adhesive edge banding for furniture according to claim 8, characterized in that: The granulation temperatures in step S2 are: zone 1: 150-155° C., zone 2: 155-160° C., zone 3: 155-160° C., zone 4: 155-160° C., zone 5: 158-165° C.

10. A method for preparing the adhesive edge banding for furniture according to any one of claims 1 to 9, characterized in that: The following steps are involved: The hot melt adhesive is compounded onto the back of the edge banding strip substrate layer by a glue coating machine to prepare an adhesive edge banding strip for furniture.

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