Adhesive edge sealing strip for furniture and preparation method of adhesive edge sealing strip

Abstract

The invention relates to the field of edge sealing strips, and discloses an adhesive edge sealing strip for furniture and a preparation method thereof.The adhesive edge sealing strip comprises an edge sealing strip base material layer and a hot melt adhesive layer, and the edge sealing strip base material layer comprises polyvinyl chloride, modified nano calcium carbonate, hollow antibacterial microspheres, chlorinated polyethylene and auxiliaries; the modified nano calcium carbonate is prepared by grafting a functional coupling agent on the surface of nano calcium carbonate and then reacting with 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride; the functionalized coupling agent is prepared from N-(4-aminophenyl) maleimide and 3-mercaptopropyl triethoxy silane through a reaction; the hollow antibacterial microspheres are prepared from an antibacterial monomer, sodium p-styrylsulfonate, N, N-methylene bisacrylamide, n-hexane and hexadecyl trimethyl ammonium bromide through emulsion interfacial polymerization and quaternization reaction, wherein the antibacterial monomer is prepared from 5-hydroxymethylthiazole and isocyano ethyl methacrylate through a reaction, and the antibacterial monomer, the sodium p-styrylsulfonate, the N, N-methylene bisacrylamide, the n-hexane and the hexadecyl trimethyl ammonium bromide are used for preparing the hollow antibacterial microspheres. The edge band prepared by the invention has excellent tensile strength, aging resistance, heat resistance, heat insulation effect and antibacterial property.

Description

Technical Field

[0001] The present 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] With the improvement of people's requirements for the appearance and quality of products such as furniture, cabinets, and doors and windows, the importance of edge banding strips as edge encapsulation materials has become increasingly prominent. The main functions of edge banding strips are to enhance aesthetics, isolate moisture, enhance the stability of the cut edges of the board, and have wear resistance, impact resistance, chemical corrosion resistance, and prevent formaldehyde volatilization, etc., providing guarantees for the appearance and functionality of the products. The rapid development of the furniture industry and the expansion of the market for panel furniture and customized furniture have further promoted the growth of the demand for edge banding strips for furniture.

[0003] The existing edge banding strips are mainly polyvinyl chloride edge banding strips. Polyvinyl chloride edge banding strips are thermoplastic coils made by mixing polyvinyl chloride as the main raw material with additives and then mixing and pressing them together. However, polyvinyl chloride has poor heat resistance and is prone to aging during use, so it is easy to deform at high temperatures, which in turn causes quality problems of the edge banding strips and furniture components. In addition, the edge banding strips are extremely easy to adsorb bacteria and dust in the air during actual use after installation, which affects the appearance and quality of the polyvinyl chloride edge banding strips. In order to reduce the occurrence of mildew on furniture boards, 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, so as to kill or inhibit the reproduction of bacteria on the edge banding strips within a certain period of time. However, due to the blending method of the antibacterial agent and the raw materials of the edge banding strips, the antibacterial performance is not good, and at the same time, the simple physical mixing is very easy to cause the precipitation of the antibacterial agent. Therefore, it is actually very difficult to ensure the long-term antibacterial effect of the edge banding strips, and it is difficult to meet the high-end application requirements. Summary of the Invention

[0004] To solve the deficiencies mentioned in the above background art, the purpose of the present invention is to provide an adhesive edge banding strip for furniture and a preparation method thereof, which endow the edge banding strip with excellent tensile strength, aging resistance, heat resistance, heat insulation effect, and antibacterial performance by adding modified nano calcium carbonate and hollow antibacterial microspheres.

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

[0006] An adhesive edge banding strip for furniture, comprising an edge banding strip base layer and a hot melt adhesive layer compounded with the edge banding strip base layer. The edge banding strip base 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 stabilizer, 2 - 4 parts of chlorinated polyethylene, 2 - 4 parts of plasticizer, 0.1 - 0.5 part of stearic acid, and 0.1 - 0.5 part of lubricant;

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

[0008] The hollow antibacterial microspheres are prepared by emulsion interfacial polymerization and quaternization reaction using antibacterial monomers and sodium p-styrenesulfonate as comonomers, N,N-methylenebisacrylamide as a crosslinking agent, n-hexane as a pore-forming agent, and cetyltrimethylammonium bromide as an ion exchange monomer; among them, the antibacterial monomers are prepared by reacting 5-hydroxymethylthiazole and isocyanatoethyl methacrylate.

[0009] Preferably, the stabilizer is one of calcium zinc stabilizer and organotin stabilizer; the lubricant is one of polyethylene wax and oxidized polyethylene wax.

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

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

[0012] (1) At 70-85 °C and in a nitrogen atmosphere, dissolve maleic anhydride in xylene to obtain a maleic anhydride solution, dissolve p-phenylenediamine in chloroform and add it to the maleic anhydride solution, add polyphosphoric acid to the reaction, stir and react at 70-85 °C for 2-3 h. After the reaction is completed, centrifuge and wash to remove unreacted substances, and then recrystallize with isopropanol, filter, and dry to prepare N-(4-aminophenyl) maleimide;

[0013] (2) Take N-(4-aminophenyl) maleimide and 3-mercaptopropyltriethoxysilane in a reactor, add acetone solvent and stir evenly, then heat up to 40-55 °C in a nitrogen atmosphere, and then add trimethylamine catalyst and stir and react for 4-5 h to prepare a functional coupling agent;

[0014] (3) Ultrasonically disperse nano calcium carbonate in a mixed solvent of ethanol and deionized water, adjust the pH value of the system to 9-10 with ammonia water, then heat up to 50-65 °C in a nitrogen atmosphere, add the functional coupling agent and stir and react for 4-5 h. After the reaction is completed, centrifuge, wash, and dry to prepare functional nano calcium carbonate;

[0015] (4) Dissolve 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid in dichloromethane, then add thionyl chloride, and reflux the reaction for 4 - 6 h under a nitrogen atmosphere. After the reaction is completed, remove the unreacted substances under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride;

[0016] (5) Ultrasonically disperse functionalized nano calcium carbonate in toluene solvent, then add a mixed solution of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride and toluene, and subsequently dropwise add triethylamine. Heat the temperature to 70 - 85 °C under a nitrogen atmosphere and stir the reaction for 20 - 24 h. After the reaction is completed, filter, wash, and dry to prepare modified nano calcium carbonate.

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

[0018] Preferably, the preparation method of the hollow antibacterial microspheres comprises the following steps:

[0019] A. Take 5-hydroxymethylthiazole, isocyanatoethyl methacrylate, and dibutyltin dilaurate in a reactor, add acetone solvent, heat the temperature to 40 - 50 °C, and stir the reaction for 8 - 12 h. After the reaction is completed, perform rotary evaporation, washing, and drying to prepare an antibacterial monomer;

[0020] B. Dissolve polyvinyl alcohol and cetyltrimethylammonium bromide in deionized water to obtain solution one. Mix the antibacterial monomer, N,N-methylenebisacrylamide, azobisisobutyronitrile, n-hexane, and sodium p-styrenesulfonate evenly to obtain solution two;

[0021] C. Take a part of solution one in a reactor, perform a pre-reaction at 75 - 80 °C, then mix the remaining solution one and solution two and dropwise add them to the reactor, stir the reaction for 4 - 5 h. Centrifuge the obtained emulsion with deionized water and then vacuum freeze-dry. Then dissolve the obtained product and cetyltrimethylammonium bromide in deionized water, place it at 30 - 35 °C and stir for 2 - 3 h, and then let it stand at room temperature, wash, and dry to prepare hollow antibacterial microspheres.

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

[0023] Preferably, the preparation method of the edge banding substrate layer comprises the following steps:

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

[0025] S2. The mixture is granulated by a twin-screw granulator and then cooled to obtain pelletized materials.

[0026] S3. The pelletized materials are extruded and formed by a twin-screw extruder to obtain sheet-shaped substrates.

[0027] S4. The sheet-shaped substrates are subjected to surface embossing treatment and cooling and shaping treatment in sequence to obtain the base layer of the edge banding strip.

[0028] Preferably, in the step S2, the granulation temperature 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 preparation method of a self-adhesive edge banding strip for furniture includes the following steps: The hot melt adhesive is compounded onto the back surface of the base layer of the edge banding strip by a coating machine to prepare the self-adhesive edge banding strip for furniture.

[0030] The beneficial effects of the present invention:

[0031] In the present invention, antioxidant N-(4-aminophenyl) maleimide is obtained by the reaction of maleic anhydride and p-phenylenediamine, then using 3-mercaptopropyltriethoxysilane as a bridging agent, a thiol-ene click reaction occurs with N-(4-aminophenyl) maleimide, and then a hydrolysis-condensation reaction occurs with nano calcium carbonate, so as to graft N-(4-aminophenyl) maleimide onto the surface of nano calcium carbonate, and antioxidant-functionalized nano calcium carbonate is prepared. At the same time, in the present invention, 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid, a hindered phenol antioxidant, is acyl chlorinated by thionyl chloride, and then the amino group introduced on the surface of the functionalized nano calcium carbonate reacts with 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride to prepare modified nano calcium carbonate, so that the hindered phenol antioxidant and amine antioxidant are combined onto the surface of nano calcium carbonate through strong chemical bonds, avoiding the problem of antioxidant migration and precipitation, endowing the material with long-term antioxidant function, and the grafting reaction introduces the imide structure with a planar five-membered ring and strong polar carbonyl groups in the molecular structure of N-(4-aminophenyl) maleimide, endowing the material with good heat resistance, and enhancing the compatibility between the modified nano calcium carbonate and polyvinyl chloride. In addition, the grafting reaction is conducive to promoting the relatively uniform dispersion of nano calcium carbonate in the matrix, avoiding the performance defects caused by nano calcium carbonate agglomeration.

[0032] The present invention utilizes the reaction of 5-hydroxymethylthiazole and isocyanatoethyl methacrylate to generate an antibacterial monomer containing a double bond structure and an antibacterial thiazole group, and then synthesizes hollow antibacterial microspheres by emulsion interfacial polymerization and quaternization reaction. Among them, a hydrophobic antibacterial monomer and hydrophilic sodium p-styrenesulfonate are used as comonomers, N,N-methylenebisacrylamide is used as a crosslinking agent, and n-hexane is used as a pore-forming agent. Copolymer hollow microspheres protected by n-hexane droplets are obtained by copolymerization of the hydrophilic / hydrophobic monomers at the oil / water phase interface. The microspheres with a hollow structure have persistent interfacial adhesion and good heat insulation performance. Further, the hollow microspheres containing hydrophilic sulfonate groups are subjected to an ion exchange quaternization reaction with cetyltrimethylammonium bromide to prepare hollow antibacterial microspheres, thereby introducing quaternary ammonium cations with antibacterial activity and thiazole monomers into the hollow antibacterial microsphere framework, and releasing antibacterial units when contacting the bacterial surface, achieving excellent antibacterial performance. Detailed implementation mode

[0033] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Example 1 A preparation method of modified nano calcium carbonate includes the following steps:

[0035] (1) At 80 °C and under a nitrogen atmosphere, 21 g of maleic anhydride is dissolved in 300 mL of xylene to obtain a maleic anhydride solution. 24 g of p-phenylenediamine is dissolved in 300 mL of chloroform and then added to the maleic anhydride solution. 0.3 g of polyphosphoric acid is added to the reaction, and the mixture is stirred at 80 °C for 2 h. After the reaction is completed, it is centrifuged and washed to remove unreacted substances, and then recrystallized with 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 are placed in a reactor, 300 mL of acetone solvent is added and stirred evenly, and then the temperature is raised to 50 °C under a nitrogen atmosphere. Subsequently, 2 g of trimethylamine catalyst is added, and the mixture is stirred and reacted for 5 h to prepare a functionalized coupling agent;

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

[0038] (4) Dissolve 2.8 g of 3-(3,5-ditert-butyl-4-hydroxyphenyl)propionic acid in 50 mL of dichloromethane, then add 2 mL of thionyl chloride, and reflux the reaction for 4 h under a nitrogen atmosphere. After the reaction is completed, remove the unreacted substances under reduced pressure to obtain 3-(3,5-ditert-butyl-4-hydroxyphenyl)propionyl 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-ditert-butyl-4-hydroxyphenyl)propionyl chloride and 20 mL of toluene, and subsequently dropwise add 1.5 g of triethylamine. Heat the temperature to 80 °C under a nitrogen atmosphere and stir the reaction for 24 h. 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 includes the following steps:

[0041] A. Take 2.3 g of 5-hydroxymethylthiazole, 3.1 g of isocyanatoethyl methacrylate, and 0.002 g of dibutyltin dilaurate in a reactor, add 100 mL of acetone solvent, heat the temperature to 45 °C, and stir the reaction for 12 h. After the reaction is completed, perform rotary evaporation, washing, and drying to prepare an antibacterial monomer;

[0042] B. Dissolve 2.5 g of polyvinyl alcohol and 0.08 g of cetyltrimethylammonium bromide in 60 mL of deionized water to obtain Solution 1. Take 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 and mix them evenly to obtain Solution 2;

[0043] C. Take 50 mL of Solution 1 in a reactor, perform a pre-reaction at 80 °C, then mix the remaining Solution 1 and Solution 2 and dropwise add them to the reactor, stir the reaction for 5 h. The obtained emulsion is centrifuged with deionized water and then vacuum freeze-dried. Then dissolve the obtained product and 0.7 g of cetyltrimethylammonium bromide in 60 mL of deionized water, stir at 30 °C for 3 h, and then place it at room temperature. After washing and drying, prepare hollow antibacterial microspheres.

[0044] Example 3 A base material layer of a sealing strip includes 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 dioctyl terephthalate as a plasticizer, 0.2 part of stearic acid, 0.1 part of polyethylene wax as a lubricant.

[0046] The method for preparing the above base material layer of the sealing strip includes the following steps:

[0047] S1. Weigh each component by weight parts. Mix polyvinyl chloride, modified nano calcium carbonate, hollow antibacterial microspheres, stabilizer, chlorinated polyethylene, plasticizer, stearic acid and lubricant evenly to obtain a mixture.

[0048] S2. After granulating the mixture through a twin-screw granulator and cooling, the granulation temperature is: Zone 1: 155 °C, Zone 2: 160 °C, Zone 3: 160 °C, Zone 4: 160 °C, Zone 5: 158 °C to obtain pelletized materials.

[0049] S3. Extrude and form the pelletized materials through a twin-screw extruder to obtain a sheet-shaped substrate.

[0050] S4. Perform surface embossing treatment and cooling and shaping treatment on the sheet-shaped substrate in sequence to obtain an edge banding substrate layer.

[0051] A preparation method of a self-adhesive edge banding for furniture includes the following steps: Compound EVA hot melt adhesive to the back of the edge banding substrate layer through a gluing machine to prepare a self-adhesive edge banding for furniture.

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

[0053] 72 parts of polyvinyl chloride, 18 parts of the modified nano calcium carbonate prepared in Example 1, 3.5 parts of the 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 part of stearic acid, 0.2 part of lubricant oxidized polyethylene wax.

[0054] The preparation methods of the above-mentioned edge banding substrate layer and the self-adhesive edge banding for furniture are the same as those in Example 3.

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

[0056] 77 parts of polyvinyl chloride, 23 parts of the modified nano calcium carbonate prepared in Example 1, 4 parts of the 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 part of stearic acid, 0.4 part of lubricant polyethylene wax.

[0057] The preparation methods of the above-mentioned edge banding substrate layer and the self-adhesive edge banding for furniture are the same as those in Example 3.

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

[0059] 77 parts of polyvinyl chloride, 23 parts of the functionalized nano calcium carbonate prepared in Example 1, 4 parts of the 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 part of stearic acid, 0.4 part of lubricant polyethylene wax.

[0060] The preparation methods of the above edge banding base material layer and the adhesive edge banding for furniture are the same as those in Example 3.

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

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

[0063] The preparation methods of the above edge banding base material layer and the adhesive edge banding for furniture are the same as those in Example 3.

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

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

[0066] The preparation methods of the above edge banding base material layer and the adhesive edge banding for furniture are the same as those in Example 3.

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

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

[0069] The preparation methods of the above edge banding base material layer and the adhesive edge banding for furniture are the same as those in Example 3.

[0070] Performance testing

[0071] The edge banding base material layers prepared in Examples 3 - 5 and Comparative Examples 1 - 4 were subjected to performance testing: The tensile property test was carried out using a universal mechanical testing machine with reference to the standard of GB / T 1040.2 - 2022; and the change rate of tensile strength was tested after aging at 100 °C for 24 h and 48 h to evaluate the heat - resistant oxygen aging performance of the samples; the Vicat softening point was tested according to GB / T1633 - 2000 to evaluate the heat - resistant performance of the samples; the thermal conductivity was tested using a thermal conductivity meter to evaluate the heat - insulation performance of the samples; the antibacterial performance of the samples was evaluated according to GB / T 31402 - 2023, and the data results are shown in Table 1.

[0072] Table 1 Test results of sample performance

[0073]

[0074] As can be seen from the data in Table 1, the edge banding substrate prepared in Examples 3-5 of the present invention has high tensile strength and good heat insulation effect. After aging at 100°C for 24 h and 48 h, it still has high tensile strength, excellent aging resistance, and at the same time has 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 change rate of tensile strength changed significantly compared with Examples 3-5. The reason is that the hindered phenol antioxidant was not grafted. In Comparative Example 2, the nano-calcium carbonate was not modified, and the measured tensile strength, change rate of tensile strength, and Vicat softening point were lower than those in Examples 3-5, indicating that the modification of 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 in Comparative Example 4, the hollow antibacterial microsphere component was not added. The measured thermal conductivity of Comparative Examples 3-4 was higher and the antibacterial rate was lower than those in Examples 3-5, indicating that the addition of hollow antibacterial microspheres can improve the heat insulation performance and antibacterial performance 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] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A furniture edge banding strip, characterized in that: It includes an edge banding strip substrate layer and a hot melt adhesive layer composited with the edge banding strip substrate layer, wherein the edge banding strip substrate layer includes the following components in parts by weight: 60 to 80 parts of polyvinyl chloride, 10 to 30 parts of modified nano calcium carbonate, 2 to 5 parts of hollow antibacterial microspheres, 2 to 4 parts of stabilizer, 2 to 4 parts of chlorinated polyethylene, 2 to 4 parts of plasticizer, 0.1 to 0.5 parts of stearic acid, and 0.1 to 0.5 parts of lubricant; The modified nano-calcium carbonate is prepared by grafting a functionalized coupling agent on the surface of the nano-calcium carbonate, and then reacting 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, and then reacting with 3-mercaptopropyltriethoxysilane to undergo a thiol-ene click reaction; The hollow antibacterial microspheres are prepared by using antibacterial monomers and sodium p-phenylene sulfonate as copolymer monomers, N,N-methylenebisacrylamide as a crosslinking agent, n-hexane as a pore-forming agent, and hexadecyltrimethylammonium bromide as an ion exchange monomer, through emulsion interfacial polymerization and quaternization reaction; wherein the antibacterial monomer is prepared by reacting 5-hydroxymethylthiazole and isocyanoethyl methacrylate.

2. The adhesive edge banding strip 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 strip 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, centrifuging and washing to remove unreacted products after the reaction is completed, then recrystallizing with isopropanol, filtering, and drying to prepare N-(4-aminophenyl)maleimide; (2) taking N-(4-aminophenyl)maleimide and 3-mercaptopropyltriethoxysilane into a reactor, adding acetone solvent and stirring evenly, then heating to 40-55° C. under a nitrogen atmosphere, then adding trimethylamine catalyst, stirring and reacting for 4-5 hours, and preparing a functionalized coupling agent; (3) Ultrasonic dispersion of nano-calcium carbonate in a mixed solvent of ethanol and deionized water, adjusting the pH value of the system to 9-10 with ammonia water, then heating to 50-65° C. under a nitrogen atmosphere, adding a functionalized coupling agent and stirring the reaction for 4-5 hours, and after the reaction is completed, centrifuging, washing, and drying to prepare functionalized nano-calcium carbonate; (4) dissolving 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid in dichloromethane, then adding thionyl chloride, and reacting under reflux for 4 to 6 hours under a nitrogen atmosphere. After the reaction is completed, removing the unreacted product under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl chloride; (5) Taking the functionalized nano-calcium carbonate and ultrasonically dispersing it in a toluene solvent, then adding a mixed solution of 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and toluene, followed by dropwise addition of triethylamine, heating to 70-85°C under a nitrogen atmosphere, stirring and reacting for 20-24 hours, and filtering, washing, and drying after the reaction is completed to prepare modified nano-calcium carbonate.

5. The adhesive edge banding strip 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 method for preparing the hollow antibacterial microspheres comprises the following steps: A. 5-hydroxymethylthiazole, isocyanoethyl methacrylate and dibutyltin dilaurate are placed in a reactor, acetone solvent is added, the temperature is raised to 40-50° C., and the mixture is stirred for reaction for 8-12 hours. After the reaction is completed, the mixture is subjected to rotary evaporation, washing and drying to prepare an antibacterial monomer; B. Dissolve polyvinyl alcohol and hexadecyltrimethylammonium bromide in deionized water to obtain solution 1, and mix antibacterial monomer, N,N-methylenebisacrylamide, azobisisobutyronitrile, n-hexane and sodium p-styrene sulfonate 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 strip for furniture according to claim 6, characterized in that: In the step B, the molar ratio of the antibacterial monomer, N,N-methylenebisacrylamide and sodium p-styrene sulfonate is 2-3:1:

1.

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

9. The adhesive edge banding strip 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 side 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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