A method for preparing a modified softening veneer and a method for preparing a modified curved furniture material

Abstract

The application discloses a preparation method of modified softening veneer and a preparation method of modified curved furniture material. The preparation method of modified softening veneer comprises the following steps: (1) preparation of softening veneer: taking poplar veneer, sequentially performing heat treatment, co-melting solvent impregnation treatment and softening agent impregnation treatment on the poplar veneer to obtain the softening veneer; and (2) modification of the softening veneer: performing ozonized vegetable oil impregnation treatment on the softening veneer to obtain the modified softening veneer. The material prepared by the application has a stable curved structure, does not contain formaldehyde, is pollution-free, environment-friendly and degradable, and the mechanical property of the plate part is not greatly affected by one-step press forming.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wood, in particular to a preparation method of modified softwood veneer and a preparation method of modified curved furniture material. BACKGROUND

[0002] Wood, as a natural, biodegradable, recyclable and inexpensive material, is widely used in the fields of construction, decoration, furniture, etc. Among them, softwood usually has the advantages of light weight, low density, good elasticity, high porosity, good compressibility, etc. Therefore, it is widely used in the fields of home, indoor decoration and construction, such as decorative boards, softwood floors, wood bricks and softwood furniture.

[0003] There is a natural super-soft wood structure in nature, which is softwood. It usually refers to the outer tissue of the mutant oak or oak tree trunk, which is a kind of bark resource with special properties. Softwood has excellent resilience; even if it is compressed to 1 / 3 of the original thickness, the softwood cells will not be damaged. In contrast to the huge demand for softwood on the market, the resource is limited because softwood can only be stripped once for many years. This prompts the research community to find a way to turn unrestricted fast-growing wood into softwood. SUMMARY

[0004] The main purpose of the present application is to provide a preparation method of modified softwood veneer and a preparation method of modified curved furniture material, which can turn unrestricted fast-growing wood into softwood.

[0005] To achieve the above purpose, the present application provides a preparation method of modified softwood veneer, comprising the following steps:

[0006] (1) Preparation of softwood veneer

[0007] Taking poplar veneer, the poplar veneer is sequentially subjected to heat treatment, co-melting solvent impregnation treatment and softening agent impregnation treatment to obtain softwood veneer.

[0008] (2) Modification of softwood veneer

[0009] The softwood veneer is subjected to ozone oil impregnation treatment to obtain the modified softwood veneer.

[0010] Further, in step (1), the poplar veneer can be a whole board, or a veneer obtained by shearing, splicing and repairing a defective poplar veneer, and the spliced veneer is spliced using a thermoplastic adhesive.

[0011] Further, in step (1), the specific process of heat treatment is as follows: the poplar veneer is heated to 160-200℃ in a nitrogen-oxygen atmosphere with an oxygen value of 5-10% for 4h, and then cooled to below 100℃.

[0012] Further, in step (1), the specific process of the co-melting solvent impregnation treatment is as follows: lactic acid and choline chloride are mixed in a molar ratio of 1-15:1 to prepare a co-melting solvent, the poplar veneer after heat treatment is soaked in the co-melting solvent, impregnated at a pressure of -1 MPa for 12-48 h, and then placed in a constant temperature and humidity box for curing treatment.

[0013] Further, the curing treatment conditions are temperature 20-25℃, humidity 80-90%, and time 24 h.

[0014] Further, in step (1), the specific process of the softener impregnation treatment is as follows: silicon oil (as a softener monomer), octyl polyoxyethylene ether (as an emulsifier), and dodecyl dimethyl ammonium chloride (as a surfactant) are mixed in a mass ratio of 1-20:1:1, the pH is adjusted to 7, and the filtrate is prepared as a softener, the poplar veneer after co-melting solvent impregnation treatment is soaked in the softener, impregnated at a pressure of -1 MPa for 24 h.

[0015] Further, in step (2), the specific process of the ozonated vegetable oil impregnation treatment is as follows: the gourd seed oil and the flaxseed oil are atomized respectively, mixed with ozone in a ratio of 20-50:1, and reacted at 25℃ for 8 h, the reaction product is filtered to prepare ozonated gourd seed oil and ozonated flaxseed oil, the ozonated gourd seed oil and the ozonated flaxseed oil are mixed in a mass ratio of 0.1-10:1 to prepare ozonated vegetable oil, the softened veneer is soaked in the ozonated vegetable oil, impregnated at a pressure of -1 MPa for 24 h, and then placed in a constant temperature and humidity box with a temperature of 25℃ and a humidity of 40-80% for curing for 48 h.

[0016] The application also provides a preparation method of a modified curved furniture material, comprising the following steps:

[0017] (1) forming of the curved furniture material

[0018] The modified softened veneer prepared by the above preparation method is placed in a mold for hot pressing treatment to obtain the curved furniture material.

[0019] (2) modification of furniture parts

[0020] The phase change microcapsules, the curing agent, and the thermoplastic resin are mixed and coated on the surface of the curved furniture material, and after drying, the modified curved furniture material is obtained.

[0021] Further, in step (1), the specific process of the hot pressing treatment is as follows: hot pressing is first carried out at a temperature of 160-200℃ and a pressure of 2-20 MPa for 10-60 min, then bending plate glue is applied, and finally cold pressing is carried out at room temperature and a pressure of 2-20 MPa for 30-90 min.

[0022] Further, in step (2), the preparation method of the phase change microcapsule is as follows:

[0023] a. Mix m-xylene, paraffin, HBPA (hydrogenated bisphenol A) and Tet (n-tetradecane), add OP-10 and deionized water, shear emulsify to obtain an O / W emulsion; mix ethylenediamine (used as a curing agent) and the O / W emulsion, stir at 60 DEG C for 2h, then stir at 70 DEG C for 3h, filter to obtain microencapsulated particles, then wash and dry to obtain MicroPCM;

[0024] b. Mix MicroPCM and polyethylene glycol ether, stir at 50 DEG C for 15min, then dissolve FeCl2*4H2O and FeCl3*6H2O in a nitrogen atmosphere, then adjust the pH to 10, then filter, wash, and dry in an oven at 600 DEG C for 24h to obtain the phase change microcapsule.

[0025] Further, the mass ratio of paraffin, Tet and m-xylene is 0.5-2:0.5-2:1, paraffin, Tet and m-xylene are used as core materials, HBPA is used as wall material, and the mass ratio of core material to wall material is 0.3-3:1.

[0026] Further, the specific operation method of step (2) is as follows: mix epoxy resin and IPDA (isophorone diamine, as a curing agent), add phase change microcapsules, the mass ratio of epoxy resin to isophorone diamine is 1-5:1, the mass ratio of epoxy resin to phase change microcapsules is 5-10:1, stir for 3min, then coat on the surface of the furniture parts at a thickness of 20-100g / m 2 Coat on the surface of the furniture parts, and finally dry at room temperature for 24h to obtain the flexible furniture material.

[0027] The beneficial effects of the present application are as follows:

[0028] (1) The present application uses natural porous material, high specific gravity, and good heat insulation performance of poplar single board as raw material, through shearing, splicing and arranging, and through heat treatment, pressure impregnation modification and hot pressing, the flexibility and antibacterial performance of wood are improved, so that the wood can play its function and aesthetic property in furniture. By adding mixed phase change microcapsule epoxy resin, the antibacterial, mildewproof and temperature control properties are enhanced, and the stiffness and strength of the wood are improved, so that it is more suitable as a curved part of furniture.

[0029] (2) The material prepared by the present application has stable curved structure, does not contain formaldehyde, is pollution-free, environmentally friendly and degradable, and the mechanical properties of the board are not affected by one-step pressure forming.

[0030] (3) The present application fully plays the antibacterial performance of ozonated oil, and further enhances the antibacterial performance of the flexible material by adding epoxy resin with good antibacterial performance, so that the panel is not prone to mildew, and people's discomfort is avoided.

[0031] (4) The present application uses interface polycondensation technology to prepare micro-PCM with paraffin, Tet and m-xylene core and HBPA shell. The phase change microcapsule used in the modification process is an epoxy resin phase change microcapsule with paraffin, Tet and m-xylene wrapped in the wall layer of epoxy resin, and then the microcapsule is modified with ferroferric oxide. Since paraffin has a wide phase change range, Tet has good latent heat of phase change at 17 DEG C, and has good temperature regulation function, and epoxy resin as a wall material has certain antibacterial effect, and at the same time, the addition of ferroferric oxide endows the microcapsule with electromagnetic shielding function. Therefore, the addition of the microcapsule endows the present application with excellent phase change regulation function, antibacterial effect and electromagnetic shielding function.

[0032] (5) The present application uses epoxy resin as a matrix, mixes phase change microcapsules, and coats the curved parts to form an epoxy resin layer on the surface of the curved parts. The formation of the epoxy resin layer on one hand increases the antibacterial property of the curved parts, and on the other hand mixes the phase change microcapsules to improve the temperature control performance of the curved parts. Epoxy resin has a secondary hydroxyl group and an epoxy group, which can react with isocyanate. Using epoxy resin as a polyhydroxy component combines the advantages of polyurethane and epoxy resin, and has good adhesive strength and chemical resistance. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The Shore hardness and resilience of the modified softwood veneer prepared in each embodiment of the present application and the control group.

[0034] Figure 2 The increase in the melting enthalpy of the modified curved furniture material prepared in each embodiment of the present application relative to the curved furniture material. DETAILED DESCRIPTION

[0035] The present application will be further described below in conjunction with the embodiments:

[0036] Unless otherwise specified, the raw materials used in the embodiments of the present application are commercially available or can be obtained by those skilled in the art. Unless otherwise specified, the methods used in the embodiments of the present application are methods mastered by those skilled in the art. Among them, epoxy resin: specification AR, purchased from Shanghai Maikelin Biochemical Technology Co., Ltd.; bending plate adhesive: phenolic resin adhesive, purchased from Zhejiang Deyang Chemical Co., Ltd., deep red, pH: 11, viscosity (mPa·s) 25 DEG C: 217, solid content (%): 42%.

[0037] Example 1

[0038] Method for preparing modified curved furniture material

[0039] (1) Pretreatment of poplar veneer

[0040] Poplar veneer with a size of 40mm x 40mm x 10mm was dried in a blast drying oven to a moisture content of 12% at a temperature of 60°C, and then was placed in a constant temperature and humidity chamber at a temperature of 20°C and a humidity of 65% to adjust to an equilibrium moisture content;

[0041] (2) Preparation of softened veneer

[0042] The pretreated poplar veneer was subjected to heat treatment, eutectic solvent impregnation treatment and softener impregnation treatment in sequence to obtain the softened veneer;

[0043] The specific process of heat treatment was that the poplar veneer was heated to 160°C for 4h in a nitrogen-oxygen atmosphere with an oxygen content of 5%, and then was cooled to 100°C;

[0044] The specific process of eutectic solvent impregnation treatment was that lactic acid and choline chloride were mixed in a molar ratio of 9:1, stirred uniformly to prepare a eutectic solvent, the heat-treated poplar veneer was soaked in the eutectic solvent, impregnated at a pressure of -1MPa for 24h, and then was placed in a constant temperature and humidity chamber at a temperature of 20°C and a humidity of 80% for curing for 24h;

[0045] The specific process of softener impregnation treatment was that silicone oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride were mixed in a mass ratio of 8:1:1, the pH was adjusted to 7 with sodium hydroxide and hydrochloric acid, and insoluble impurities were filtered out to prepare a softener, the eutectic solvent impregnated poplar veneer was soaked in the softener, impregnated at a pressure of -1MPa for 24h;

[0046] (3) Modification of softened veneer

[0047] Ozone-treated luffa seed oil and ozone-treated linseed oil were prepared in the same way, ozone-treated luffa seed oil and ozone-treated linseed oil were mixed in a mass ratio of 1:1 to prepare ozone-treated vegetable oil, the softened veneer was soaked in the ozone-treated vegetable oil, impregnated at a pressure of -1MPa for 24h, and then was placed in a constant temperature and humidity chamber at a temperature of 25°C and a humidity of 40% for curing for 48h to obtain modified softened veneer;

[0048] (4) Forming of curved furniture material

[0049] The modified softening veneer is put into a mold (a circular arc mold with a radius of 90 cm and an angle of 90°, the same below) for hot pressing treatment. First, hot pressing is performed at a temperature of 200℃ and a pressure of 2.5Mpa for 30min, then bending plate glue is applied, and finally cold pressing is performed at room temperature and a pressure of 2.5mpa for 60min, to obtain a curved furniture material;

[0050] (5) Preparation of phase change microcapsules

[0051] a. Paraffin, Tet and m-xylene are used as core materials, HBPA is used as wall material, the mass ratio of core material to wall material is 1:1, the mass ratio of paraffin, Tet and m-xylene is 1:1:1, m-xylene, paraffin, HBPA and Tet are mixed at a temperature of 90℃, 10% of OP-10 by mass of core material and 9 times of deionized water by mass of core material are added, and an O / W emulsion is obtained by shearing and emulsifying with a high-speed shearing machine at a speed of 12000rpm; ethylenediamine and the O / W emulsion are mixed in a mass ratio of 1:2, stirred at 60℃ for 2h, then stirred at 70℃ for 3h, filtered to obtain microencapsulated particles, washed with ethanol, and freeze-dried at a temperature of -55℃ for 24h to obtain MicroPCM;

[0052] b. MicroPCM and polyethylene glycol ether are mixed in a mass ratio of 1:3, stirred at 50℃ for 15min, then FeCl2·4H2O and FeCl3·6H2O are dissolved in a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then the pH is adjusted to 10 with ammonia water, and then filtered and washed to obtain black particles, which are dried in an oven at 600℃ for 24h to obtain the phase change microcapsules;

[0053] (6) Modification of furniture parts

[0054] Epoxy resin and IPDA are mixed, and phase change microcapsules are added, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:15, stirred for 3min, then 50g / m 2 is coated on the surface of the curved furniture material, and finally dried at room temperature for 24h to obtain the modified curved furniture material.

[0055] Example 2

[0056] Method for preparing modified curved furniture material

[0057] (1) Pretreatment of poplar veneer

[0058] Poplar veneer with size of 40mm x 40mm x 10mm was dried in a blast drying oven at 60℃ to moisture content of 13%, and then was put into a constant temperature and humidity chamber at 20℃ and 65% humidity to adjust to equilibrium moisture content;

[0059] (2) Preparation of softened veneer

[0060] The pretreated poplar veneer was subjected to heat treatment, eutectic solvent impregnation treatment and softening agent impregnation treatment in sequence to obtain softened veneer;

[0061] The specific process of heat treatment was as follows: the poplar veneer was heated to 170℃ in nitrogen-oxygen atmosphere with oxygen content of 6% and kept for 4h, and then cooled to 100℃;

[0062] The specific process of eutectic solvent impregnation treatment was as follows: lactic acid and choline chloride were mixed in a molar ratio of 4:1, stirred uniformly to prepare eutectic solvent, the heat-treated poplar veneer was soaked in the eutectic solvent, impregnated at a pressure of -1MPa for 36h, and then put into a constant temperature and humidity chamber at 21℃ and 85% humidity for curing for 24h;

[0063] The specific process of softening agent impregnation treatment was as follows: silicone oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride were mixed in a mass ratio of 2:1:1, the pH was adjusted to 7 with sodium hydroxide and hydrochloric acid, and the insoluble impurities were filtered out to prepare softening agent, the eutectic solvent impregnated poplar veneer was soaked in the softening agent, impregnated at a pressure of -1MPa for 24h;

[0064] (3) Modification of softened veneer

[0065] Ozone-treated silk gourd seed oil and ozone-treated linseed oil were prepared by the same method, ozone-treated silk gourd seed oil and ozone-treated linseed oil were mixed in a mass ratio of 1:2 to prepare ozone-treated vegetable oil, the softened veneer was soaked in the ozone-treated vegetable oil, impregnated at a pressure of -1MPa for 24h, and then put into a constant temperature and humidity chamber at 25℃ and 50% humidity for curing for 48h to obtain modified softened veneer;

[0066] (4) Forming of curved furniture material

[0067] The modified softened veneer was put into a mold for hot pressing, first hot pressed at 180℃ and 5MPa for 30min, then coated with bending glue, and finally cold pressed at room temperature and 5MPa for 60min to obtain curved furniture material;

[0068] (5) Preparation of phase change microcapsules

[0069] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 1:1, the mass ratio of paraffin, Tet and m-xylene is 1:1:2, mix m-xylene, paraffin, HBPA and Tet at a temperature of 90℃, add 10% of OP-10 by mass of core material and 9 times of deionized water by mass of core material, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and the O / W emulsion in a mass ratio of 1:2, stir at 60℃ for 2h, then stir at 70℃ for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at a temperature of -55℃ for 24h to obtain MicroPCM;

[0070] b. mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50℃ for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM: FeCl2·4H2O: FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600℃ for 24h to obtain the phase change microcapsule.

[0071] (6) Modification of furniture parts

[0072] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin: IPDA: phase change microcapsules is 100:35:20, stir for 3min, then coat on the surface of the curved furniture material at a rate of 40g / m 2 Finally, dry at room temperature for 24h to obtain the modified curved furniture material.

[0073] Example 3

[0074] Method for preparing modified curved furniture material

[0075] (1) Pretreatment of poplar veneer

[0076] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60℃ until the moisture content is 14%, then placed in a constant temperature and humidity chamber at a temperature of 20℃ and a humidity of 65% to adjust to the equilibrium moisture content;

[0077] (2) Preparation of softened veneer

[0078] The pretreated poplar veneer is sequentially subjected to heat treatment, eutectic solvent impregnation treatment and softening agent impregnation treatment to obtain a softened veneer;

[0079] The specific process of heat treatment is that the poplar veneer is heated to 180℃ in nitrogen-oxygen atmosphere with oxygen value of 7% and kept for 4h, and then cooled to 100℃;

[0080] The specific process of co-melting solvent impregnation treatment is that lactic acid and choline chloride are mixed in the proportion of 7:3 in mole ratio, stirred uniformly to prepare co-melting solvent, the heat-treated poplar veneer is soaked in the co-melting solvent, impregnated for 24h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 22℃ and humidity of 80% for curing for 24h;

[0081] The specific process of softener impregnation treatment is that silicon oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride are mixed in the proportion of 3:1:1 in mass ratio, the pH is adjusted to 7 by sodium hydroxide and hydrochloric acid, and the insoluble impurities are filtered out to prepare softener, the co-melting solvent impregnated poplar veneer is soaked in the softener, impregnated for 24h under the pressure of -1MPa;

[0082] (3) Modification of softened veneer

[0083] The specific process of ozone treatment is that the luffa seed oil is atomized and mixed with ozone in the proportion of 40:1 in a sealed reaction kettle, the reaction is carried out at 25℃ for 8h, the reaction product is collected, the insoluble impurities are filtered out, and ozone-treated luffa seed oil is prepared, ozone-treated linseed oil is prepared in the same way, ozone-treated plant oil is prepared by mixing ozone-treated luffa seed oil and ozone-treated linseed oil in the proportion of 1:1 in mass ratio, the softened veneer is soaked in the ozone-treated plant oil, impregnated for 24h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 25℃ and humidity of 60% for curing for 48h to obtain modified softened veneer;

[0084] (4) Forming of curved furniture material

[0085] The modified softened veneer is placed in a mold for hot pressing treatment, first hot pressed at 180℃ and 7.5MPa for 60min, then coated with bending glue, and finally cold pressed at room temperature and 7.5MPa for 60min to obtain curved furniture material;

[0086] (5) Preparation of phase change microcapsules

[0087] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 1:2, the mass ratio of paraffin, Tet and m-xylene is 2:2:1, mix m-xylene, paraffin, HBPA and Tet at a temperature of 90°C, add 10% of the mass of the core material OP-10 and 9 times the mass of the core material deionized water, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and O / W emulsion in a mass ratio of 1:2, stir at 60°C for 2h, then stir at 70°C for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at a temperature of -55°C for 24h to obtain MicroPCM;

[0088] b. Mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50°C for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600°C for 24h to obtain the phase change microcapsule.

[0089] (6) Modification of furniture parts

[0090] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:20, stir for 3min, then coat on the surface of the curved furniture material at a rate of 60g / m 2 Coat on the surface of the curved furniture material, and finally dry at room temperature for 24h to obtain the modified curved furniture material.

[0091] Example 4

[0092] Method for preparing modified curved furniture material

[0093] (1) Pretreatment of poplar veneer

[0094] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60°C to a moisture content of 15%, and then placed in a constant temperature and humidity chamber at a temperature of 20°C and a humidity of 65% to adjust to an equilibrium moisture content;

[0095] (2) Preparation of softened veneer

[0096] The pretreated poplar veneer is sequentially subjected to heat treatment, eutectic solvent impregnation treatment and softener impregnation treatment to obtain a softened veneer;

[0097] The specific process of heat treatment is that the poplar veneer is heated to 190℃ in nitrogen-oxygen atmosphere with oxygen value of 8% and kept for 4h, and then cooled to 100℃;

[0098] The specific process of co-melting solvent impregnation treatment is that lactic acid and choline chloride are mixed in the proportion of 3:2 in mole ratio, stirred uniformly to prepare co-melting solvent, the heat-treated poplar veneer is soaked in the co-melting solvent, impregnated for 48h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 23℃ and humidity of 90% for curing for 24h;

[0099] The specific process of softener impregnation treatment is that silicon oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride are mixed in the proportion of 4:1:1 in mass ratio, the pH is adjusted to 7 by sodium hydroxide and hydrochloric acid, and the insoluble impurities are filtered out to prepare softener, the co-melting solvent impregnated poplar veneer is soaked in the softener, impregnated for 24h under the pressure of -1MPa;

[0100] (3) Modification of softened veneer

[0101] The ozone-treated silk gourd seed oil is prepared by atomizing the silk gourd seed oil and passing it into a sealed reaction kettle with ozone in the proportion of 50:1 at 25℃ for 8h, collecting the reaction product, and filtering out the insoluble impurities, and the ozone-treated linseed oil is prepared in the same way, the ozone-treated silk gourd seed oil and the ozone-treated linseed oil are mixed in the proportion of 2:1 in mass ratio to prepare ozone-treated vegetable oil, the softened veneer is soaked in the ozone-treated vegetable oil, impregnated for 24h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 25℃ and humidity of 70% for curing for 48h to obtain modified softened veneer;

[0102] (4) Forming of curved furniture material

[0103] The modified softened veneer is placed in a mold for hot pressing treatment, first hot pressed at 160℃ and 10MPa for 60min, then coated with bending glue, and finally cold pressed at room temperature and 10MPa for 60min to obtain the curved furniture material;

[0104] (5) Preparation of phase change microcapsules

[0105] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 2:1, the mass ratio of paraffin, Tet and m-xylene is 1:1:2, mix m-xylene, paraffin, HBPA and Tet at 90℃, add 10% of OP-10 by mass of core material and 9 times of deionized water by mass of core material, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and the O / W emulsion in a mass ratio of 1:2, stir at 60℃ for 2h, then stir at 70℃ for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at -55℃ for 24h to obtain MicroPCM;

[0106] b. mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50℃ for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600℃ for 24h to obtain the phase change microcapsule.

[0107] (6) Modification of furniture parts

[0108] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:20, stir for 3min, then coat on the surface of the curved furniture material at a rate of 50g / m 2 Coat on the surface of the curved furniture material, and finally dry at room temperature for 24h to obtain the modified curved furniture material.

[0109] Example 5

[0110] Method for preparing modified curved furniture material

[0111] (1) Pretreatment of poplar veneer

[0112] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60℃ until the moisture content is 12%, and then is placed in a constant temperature and humidity chamber at a temperature of 20℃ and a humidity of 65% to adjust the equilibrium moisture content;

[0113] (2) Preparation of softened veneer

[0114] The pretreated poplar veneer is sequentially subjected to heat treatment, co-melt solvent impregnation treatment and softening agent impregnation treatment to obtain a softened veneer;

[0115] The specific process of heat treatment is that the poplar veneer is heated to 200℃ in nitrogen-oxygen atmosphere with oxygen value of 9% and kept for 4h, and then cooled to 100℃;

[0116] The specific process of co-melting solvent impregnation treatment is that lactic acid and choline chloride are mixed in a molar ratio of 3:2, stirred uniformly to prepare co-melting solvent, the heat-treated poplar veneer is soaked in the co-melting solvent, impregnated for 24h under a pressure of -1MPa, and then placed in a constant temperature and humidity box with a temperature of 24℃ and a humidity of 85% for curing for 24h;

[0117] The specific process of softener impregnation treatment is that silicon oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride are mixed in a mass ratio of 5:1:1, the pH is adjusted to 7 by sodium hydroxide and hydrochloric acid, and the insoluble impurities are filtered out to prepare softener, the co-melting solvent impregnated poplar veneer is soaked in the softener, impregnated for 24h under a pressure of -1MPa;

[0118] (3) Modification of softened veneer

[0119] The ozone-treated silk gourd seed oil is prepared by atomizing silk gourd seed oil and passing it into a sealed reaction kettle with ozone in a ratio of 20:1 at a temperature of 25℃ for 8h, collecting the reaction product, filtering out insoluble impurities, and the ozone-treated linseed oil is prepared in the same way, the ozone-treated silk gourd seed oil and the ozone-treated linseed oil are mixed in a mass ratio of 1:1 to prepare ozone-treated vegetable oil, the softened veneer is soaked in the ozone-treated vegetable oil, impregnated for 24h under a pressure of -1MPa, and then placed in a constant temperature and humidity box with a temperature of 25℃ and a humidity of 80% for curing for 48h to obtain modified softened veneer;

[0120] (4) Forming of curved furniture material

[0121] The modified softened veneer is placed in a mold for hot pressing treatment, first hot pressed at a temperature of 180℃ and a pressure of 5MPa for 60min, then coated with bending glue, and finally cold pressed at room temperature and a pressure of 5MPa for 60min to obtain curved furniture material;

[0122] (5) Preparation of phase change microcapsules

[0123] a. Using paraffin wax, Tet, and m-xylene as the core material and HBPA as the wall material, with a core-to-wall material mass ratio of 1:1 and a paraffin wax, Tet, and m-xylene mass ratio of 1:1:2, m-xylene, paraffin wax, HBPA, and Tet were mixed at 90°C. 10% of the core material mass of OP-10 and 9 times the core material mass of deionized water were added, and the mixture was sheared and emulsified at 12000 rpm using a high-speed shear machine to obtain an O / W emulsion. Ethylenediamine and the O / W emulsion were mixed at a mass ratio of 1:2 and stirred at 60°C for 2 hours, then stirred at 70°C for 3 hours. After filtration, microencapsulated particles were obtained, washed with ethanol, and freeze-dried at -55°C for 24 hours to obtain MicroPCM.

[0124] b. MicroPCM and polyethylene glycol ether were mixed in a mass ratio of 1:3 and stirred at 50°C for 15 min. Then, FeCl2·4H2O and FeCl3·6H2O were added and dissolved under a nitrogen atmosphere. The mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O was 1:0.44:0.3. The pH was then adjusted to 10 with ammonia. After filtration and washing, black microparticles were obtained and dried in an oven at 600°C for 24 h to obtain the phase change microcapsules.

[0125] (6) Modification of furniture parts

[0126] Mix epoxy resin and IPDA, add phase change microcapsules (epoxy resin:IPDA:phase change microcapsules mass ratio 100:35:15), stir for 3 minutes, then add at 50 g / m³. 2 The material is coated onto the surface of curved furniture material and then dried at room temperature for 24 hours to obtain the modified curved furniture material.

[0127] Example 6

[0128] Preparation method of modified curved furniture materials

[0129] (1) Pretreatment of poplar veneer

[0130] Poplar veneers with dimensions of 40mm×40mm×10mm were placed in a forced-air drying oven and dried at 60℃ to a moisture content of 13%, and then placed in a constant temperature and humidity chamber at 20℃ and 65% to adjust to a balanced moisture content.

[0131] (2) Preparation of softened veneer

[0132] The pretreated poplar veneer was subjected to heat treatment, eutectic solvent impregnation, and softening agent impregnation in sequence to obtain softened veneer;

[0133] The specific process of the heat treatment is: heating the poplar veneer to 160℃ in a nitrogen-oxygen atmosphere with oxygen value of 10% for 4h, and then cooling to 100℃;

[0134] The specific process of the co-melting solvent impregnation treatment is: mixing lactic acid and choline chloride in a molar ratio of 9:1, stirring uniformly to prepare the co-melting solvent, immersing the heat-treated poplar veneer in the co-melting solvent, impregnating for 24h under a pressure of -1MPa, and then placing in a constant temperature and humidity box with temperature of 25℃ and humidity of 80% for curing for 24h;

[0135] The specific process of the softener impregnation treatment is: mixing silicone oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride in a mass ratio of 6:1:1, adjusting pH to 7 with sodium hydroxide and hydrochloric acid, filtering out insoluble impurities to prepare the softener, immersing the co-melting solvent impregnated poplar veneer in the softener, impregnating for 24h under a pressure of -1MPa;

[0136] (3) Modification of the softened veneer

[0137] The specific process of the ozone treatment is: atomizing the silk gourd seed oil and passing it into a sealed reaction kettle with ozone in a ratio of 30:1 at a temperature of 25℃ for 8h, collecting the reaction product, filtering out insoluble impurities to prepare the ozonized silk gourd seed oil, and preparing ozonized linseed oil in the same way, mixing the ozonized silk gourd seed oil and the ozonized linseed oil in a mass ratio of 1:1 to prepare ozonized vegetable oil, immersing the softened veneer in the ozonized vegetable oil, impregnating for 24h under a pressure of -1MPa, and then placing in a constant temperature and humidity box with temperature of 25℃ and humidity of 40% for curing for 48h to obtain the modified softened veneer;

[0138] (4) Forming of the curved furniture material

[0139] The specific process of the heat pressing treatment of the modified softened veneer is: first heat pressing at a temperature of 200℃ and a pressure of 2.5MPa for 20min, then applying bending glue, and finally cold pressing at room temperature and a pressure of 2.5MPa for 60min to obtain the curved furniture material;

[0140] (5) Preparation of phase change microcapsules

[0141] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 3:1, the mass ratio of paraffin, Tet and m-xylene is 1:1:1, mix m-xylene, paraffin, HBPA and Tet at a temperature of 90°C, add 10% of the mass of the core material OP-10 and 9 times the mass of the core material deionized water, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and O / W emulsion in a mass ratio of 1:2, stir at 60°C for 2h, then stir at 70°C for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at a temperature of -55°C for 24h to obtain MicroPCM;

[0142] b. Mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50°C for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600°C for 24h to obtain the phase change microcapsule.

[0143] (6) Modification of furniture parts

[0144] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:15, stir for 3min, then coat on the surface of the curved furniture material at a rate of 60g / m 2 Finally, dry at room temperature for 24h to obtain the modified curved furniture material.

[0145] Example 7

[0146] Method for preparing modified curved furniture material

[0147] (1) Pretreatment of poplar veneer

[0148] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60°C to a moisture content of 14%, then placed in a constant temperature and humidity chamber at a temperature of 20°C and a humidity of 65% to adjust to an equilibrium moisture content;

[0149] (2) Preparation of softened veneer

[0150] The pretreated poplar veneer is sequentially subjected to heat treatment, eutectic solvent impregnation treatment and flexibilizer impregnation treatment to obtain a softened veneer;

[0151] The specific process of heat treatment is that the poplar veneer is heated to 170℃ in nitrogen-oxygen atmosphere with oxygen value of 9% and kept for 4h, and then cooled to below 100℃;

[0152] The specific process of co-melting solvent impregnation treatment is that lactic acid and choline chloride are mixed in a molar ratio of 4:1, stirred uniformly to prepare co-melting solvent, the heat-treated poplar veneer is soaked in the co-melting solvent, impregnated for 48h under a pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 25℃ and humidity of 80% for curing for 24h;

[0153] The specific process of softener impregnation treatment is that silicone oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride are mixed in a mass ratio of 8:1:1, the pH is adjusted to 7 by sodium hydroxide and hydrochloric acid, and insoluble impurities are filtered out to prepare softener, the co-melting solvent impregnated poplar veneer is soaked in the softener, impregnated for 24h under a pressure of -1MPa;

[0154] (3) Modification of softened veneer

[0155] The ozone-treated silk gourd seed oil is prepared by atomizing silk gourd seed oil and passing it into a sealed reaction kettle with ozone at a ratio of 40:1 at a temperature of 25℃ for 8h, and the reaction product is collected and insoluble impurities are filtered out. The ozone-treated linseed oil is prepared in the same way. The ozone-treated silk gourd seed oil and the ozone-treated linseed oil are mixed in a mass ratio of 1:3 to prepare ozone-treated vegetable oil. The softened veneer is soaked in the ozone-treated vegetable oil, impregnated for 24h under a pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 25℃ and humidity of 50% for curing for 48h to obtain modified softened veneer.

[0156] (4) Forming of curved furniture material

[0157] The modified softened veneer is placed in a mold for hot pressing treatment, first hot pressed at a temperature of 180℃ and a pressure of 7.5MPa for 45min, then coated with bending glue, and finally cold pressed at room temperature and a pressure of 7.5MPa for 60min to obtain curved furniture material.

[0158] (5) Preparation of phase change microcapsules

[0159] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 1:3, the mass ratio of paraffin, Tet and m-xylene is 1:1:2, mix m-xylene, paraffin, HBPA and Tet at 90℃, add 10% of OP-10 by mass of core material and 9 times of deionized water by mass of core material, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and the O / W emulsion in a mass ratio of 1:2, stir at 60℃ for 2h, then stir at 70℃ for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at -55℃ for 24h to obtain MicroPCM;

[0160] b. mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50℃ for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600℃ for 24h to obtain the phase change microcapsule.

[0161] (6) Modification of furniture parts

[0162] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:35:20, stir for 3min, then coat on the surface of the curved furniture material at a rate of 50g / m 2 Finally, dry at room temperature for 24h to obtain the modified curved furniture material.

[0163] Example 8

[0164] Method for preparing modified curved furniture material

[0165] (1) Pretreatment of poplar veneer

[0166] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60℃ until the moisture content is 15%, then placed in a constant temperature and humidity chamber at a temperature of 20℃ and a humidity of 65% to adjust to the equilibrium moisture content;

[0167] (2) Preparation of softened veneer

[0168] The pretreated poplar veneer is sequentially subjected to heat treatment, eutectic solvent impregnation treatment and softener impregnation treatment to obtain a softened veneer;

[0169] The specific process of heat treatment is: heating the poplar veneer to 180℃ in nitrogen-oxygen atmosphere with oxygen value of 8% and keeping for 4h, and then cooling to below 100℃;

[0170] The specific process of co-melting solvent impregnation treatment is: mixing lactic acid and choline chloride in the proportion of 4:1 in mole ratio, stirring uniformly to prepare co-melting solvent, immersing the heat-treated poplar veneer in the co-melting solvent, impregnating for 24h under the pressure of -1MPa, and then placing in a constant temperature and humidity box with temperature of 24℃ and humidity of 85% for curing for 24h;

[0171] The specific process of softener impregnation treatment is: mixing silicone oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride in the proportion of 10:1:1 in mass ratio, adjusting pH to 7 with sodium hydroxide and hydrochloric acid, filtering out insoluble impurities to prepare softener, immersing the co-melting solvent impregnated poplar veneer in the softener, impregnating for 24h under the pressure of -1MPa;

[0172] (3) Modification of softened veneer

[0173] Spraying the wax gourd seed oil into a sealed reaction kettle with ozone in the proportion of 50:1, reacting at 25℃ for 8h, collecting the reaction product, filtering out insoluble impurities to prepare ozonized wax gourd seed oil, preparing ozonized linseed oil in the same way, mixing the ozonized wax gourd seed oil and ozonized linseed oil in the proportion of 3:1 in mass ratio to prepare ozonized vegetable oil, immersing the softened veneer in the ozonized vegetable oil, impregnating for 24h under the pressure of -1MPa, and then placing in a constant temperature and humidity box with temperature of 25℃ and humidity of 60% for curing for 48h to obtain modified softened veneer;

[0174] (4) Forming of curved furniture material

[0175] Placing the modified softened veneer into a mold for hot pressing, first hot pressing at 160℃ and pressure of 2.5MPa for 30min, then applying bending glue, and finally cold pressing at room temperature and pressure of 2.5MPa for 60min to obtain curved furniture material;

[0176] (5) Preparation of phase change microcapsule

[0177] a. paraffin, Tet and m-xylene as core material, HBPA as wall material, the mass ratio of core material to wall material is 3:1, the mass ratio of paraffin, Tet and m-xylene is 2:1:2, mix m-xylene, paraffin, HBPA and Tet at 90℃, add 10% of OP-10 by mass of core material and 9 times of deionized water by mass of core material, shear emulsify with a high-speed shear machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and the O / W emulsion in a mass ratio of 1:2, stir at 60℃ for 2h, then stir at 70℃ for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze dry at -55℃ for 24h to obtain MicroPCM;

[0178] b. mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50℃ for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O under a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, then filter and wash to obtain black particles, dry in an oven at 600℃ for 24h to obtain the phase change microcapsule.

[0179] (6) Modification of furniture parts

[0180] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:15, stir for 3min, then coat on the surface of the curved furniture material at a rate of 40g / m 2 Coat on the surface of the curved furniture material, and finally dry at room temperature for 24h to obtain the modified curved furniture material.

[0181] Example 9

[0182] Method for preparing modified curved furniture material

[0183] (1) Pretreatment of poplar veneer

[0184] Poplar veneer with a size of 40mm×40mm×10mm is dried in a forced air drying oven at a temperature of 60℃ until the moisture content is 12%, and then is placed in a constant temperature and humidity chamber at a temperature of 20℃ and a humidity of 65% to adjust the equilibrium moisture content;

[0185] (2) Preparation of softened veneer

[0186] The pretreated poplar veneer is sequentially subjected to heat treatment, co-melt solvent impregnation treatment and softening agent impregnation treatment to obtain a softened veneer;

[0187] The specific process of heat treatment is that the poplar veneer is heated to 190℃ in nitrogen-oxygen atmosphere with oxygen value of 7% and kept for 4h, and then cooled to below 100℃;

[0188] The specific process of co-melting solvent impregnation treatment is that lactic acid and choline chloride are mixed in the proportion of 7:3 in mole ratio, stirred uniformly to prepare co-melting solvent, the heat-treated poplar veneer is soaked in the co-melting solvent, impregnated for 36h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 23℃ and humidity of 90% for curing for 24h;

[0189] The specific process of softener impregnation treatment is that silicon oil, octyl polyoxyethylene ether and dodecyl dimethyl ammonium chloride are mixed in the proportion of 9:1:1 in mass ratio, pH is adjusted to 7 by sodium hydroxide and hydrochloric acid, and insoluble impurities are filtered out to prepare softener, the co-melting solvent impregnated poplar veneer is soaked in the softener, impregnated for 24h under the pressure of -1MPa;

[0190] (3) Modification of softened veneer

[0191] The specific process of ozone treatment is that the luffa seed oil is atomized and mixed with ozone in the proportion of 20:1 in a sealed reaction kettle, and the reaction is carried out at 25℃ for 8h, the reaction product is collected, and insoluble impurities are filtered out to prepare ozonized luffa seed oil, and ozonized linseed oil is prepared in the same way, the ozonized luffa seed oil and the ozonized linseed oil are mixed in the proportion of 1:3 in mass ratio to prepare ozonized vegetable oil, the softened veneer is soaked in the ozonized vegetable oil, impregnated for 24h under the pressure of -1MPa, and then placed in a constant temperature and humidity box with temperature of 25℃ and humidity of 70% for curing for 48h to obtain modified softened veneer;

[0192] (4) Forming of curved furniture material

[0193] The modified softened veneer is placed in a mold for hot pressing treatment, first hot pressed at 180℃ and 10MPa for 10-60min, then coated with bending glue, and finally cold pressed at room temperature and 10MPa for 60min to obtain curved furniture material;

[0194] (5) Preparation of phase change microcapsules

[0195] a. paraffin, Tet and m-xylene as core materials, HBPA as wall material, the mass ratio of core material to wall material is 1:3, the mass ratio of paraffin, Tet and m-xylene is 1:1:2, mix m-xylene, paraffin, HBPA and Tet at a temperature of 90℃, add 10% of the mass of the core material OP-10 and 9 times the mass of the core material deionized water, and shear emulsify with a high-speed shearing machine at a speed of 12000 rpm to obtain an O / W emulsion; mix ethylenediamine and the O / W emulsion in a mass ratio of 1:2, stir at 60℃ for 2h, then stir at 70℃ for 3h, filter to obtain microencapsulated particles, then wash with ethanol, freeze-dry at a temperature of -55℃ for 24h to obtain MicroPCM;

[0196] b. mix MicroPCM and polyethylene glycol ether in a mass ratio of 1:3, stir at 50℃ for 15min, then dissolve FeCl2·4H2O and FeCl3·6H2O in a nitrogen atmosphere, the mass ratio of MicroPCM:FeCl2·4H2O:FeCl3·6H2O is 1:0.44:0.3, then adjust the pH to 10 with ammonia water, and then filter and wash to obtain black particles, dry in an oven at 600℃ for 24h to obtain the phase change microcapsule;

[0197] (6) Modification of furniture parts

[0198] Mix epoxy resin and IPDA, add phase change microcapsules, the mass ratio of epoxy resin:IPDA:phase change microcapsules is 100:25:15, stir for 3min, then coat on the surface of the curved furniture material, and finally dry at room temperature for 24h to obtain the modified curved furniture material. 2 Coat on the surface of the curved furniture material, and finally dry at room temperature for 24h to obtain the modified curved furniture material.

[0199] Performance test

[0200] Table 1 is the mildew resistance test results of the modified softwood veneer prepared in each example, and from the data in the table, it can be seen that the mildew resistance effect of the modified softwood veneer prepared by the present application is in the range of 0-1, which shows good mildew resistance performance. In addition, the mildew resistance performance of the material is related to the content of ozonized oil (ozonized sponge gourd seed oil and ozonized linseed oil), and the higher the proportion of ozonized linseed oil, the better the mildew resistance effect.

[0201] Table 1

[0202]

[0203] Note: The mildew resistance test is based on GB / T 18261-2013 Test method for wood mildew and discoloration fungus prevention and control efficiency of mildew resistance agent.

[0204] Table 2 and Table 3 are the results of the antibacterial effect test of the modified softening single board on E. coli and S. aureus, respectively. The results show that the modified softening single board has excellent antibacterial effect on E. coli and S. aureus and has reached the national standard requirement; the antibacterial effect of each example on the same bacteria has no significant difference; the antibacterial effect of each example on S. aureus (bacteriostatic rate ≥98.47%) is better than that on E. coli (bacteriostatic rate ≥96.17%).

[0205]

[0206] Table 2 is the antibacterial test result of E. coli

[0207]

[0208] Note: The antibacterial test is based on LY / T 1926-2010 Antibacterial Performance Test Method and Antibacterial Effect of Antibacterial Wood (Bamboo) Floor.

[0209] Table 3 is the antibacterial test result of S. aureus

[0210]

[0211]

[0212] Note: The antibacterial test is based on LY / T 1926-2010 Antibacterial Performance Test Method and Antibacterial Effect of Antibacterial Wood (Bamboo) Floor.

[0213] Figure 1 Table 4 is the mechanical property data of the modified curved furniture material prepared in each example. The control group is the single board laminated material prepared from the poplar single board according to steps (4) to (6) of Example 1.

[0214] Table 4 is the mechanical property data of the modified curved furniture material prepared in each example. The control group is the single board laminated material prepared from the poplar single board according to steps (4) to (6) of Example 1.

[0215] Table 4

[0216]

[0217] Note: The national standard GB / T T 17657-2013 tests the bending elastic modulus and static bending strength of the formaldehyde-free poplar single board laminated material.​

[0218] Table 5 shows the particle size and embedding rate of the phase change microcapsules prepared in each example.

[0219] Table 5

[0220]

[0221] Figure 2 is the increase of the melting enthalpy of the modified curved furniture material prepared in each example relative to the curved furniture material, compared with the curved furniture material without coating the phase change microcapsules, the melting enthalpy of the modified curved furniture material coated with the phase change microcapsules is increased, so that the heat storage performance of the material is enhanced.

[0222] Enhancement mechanism: the phase change material in the phase change microcapsules can absorb and release a large amount of heat, and by coating on the surface of the veneer, the heat storage performance of the veneer can be enhanced. When the ambient temperature rises, the phase change microcapsules absorb heat, helping to reduce the surface temperature of the veneer. When the ambient temperature drops, the phase change microcapsules release heat, helping to increase the surface temperature of the veneer.

[0223] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for preparing a modified meander furniture material, characterized by, The method comprises the following steps: (1) forming of the curved furniture material The modified softened veneer is put into a mold for hot pressing to obtain the curved furniture material; The method for preparing the modified softened veneer comprises the following steps: 1.1) preparation of the softened veneer Poplar veneer is taken, and the poplar veneer is sequentially subjected to heat treatment, co-melting solvent impregnation treatment and softening agent impregnation treatment to obtain the softened veneer; 1.2) modification of the softened veneer The softened veneer is subjected to ozonized vegetable oil impregnation treatment to obtain the modified softened veneer; (2) modification of the furniture parts The phase change microcapsules, the curing agent and the thermoplastic resin are mixed and coated on the surface of the curved furniture material, and after drying, the modified curved furniture material is obtained; The preparation method of the phase change microcapsules is as follows: 2.1) m-xylene, paraffin, HBPA and Tet are mixed, OP-10 and deionized water are added, and shearing emulsification is performed to obtain an O / W emulsion; ethylenediamine and the O / W emulsion are mixed, stirring is performed at 60°C for 2h, and then stirring is performed at 70°C for 3h, the microencapsulated particles are obtained after filtration, and then washing and drying are performed to obtain MicroPCM; The mass ratio of paraffin, Tet and m-xylene is 0.5-2:0.5-2:1, paraffin, Tet and m-xylene are used as the core material, HBPA is used as the wall material, and the mass ratio of the core material to the wall material is 0.3-3:1; 2.2) MicroPCM and polyethylene glycol ether are mixed, stirring is performed at 50°C for 15min, FeCl2·4H2O and FeCl3·6H2O are dissolved in a nitrogen atmosphere, then the pH is adjusted to 10, and then filtration, washing and drying in an oven at 600°C for 24h are performed to obtain the phase change microcapsules.

2. The method for preparing the modified curved furniture material as described in claim 1, characterized in that, In step 1.1), the specific process of heat treatment is as follows: the poplar veneer is heated to 160-200°C and kept for 4h in a nitrogen-oxygen atmosphere with an oxygen value of 5-10%, and then cooled to below 100°C.

3. The method of making a modified sinuous furniture material of claim 1, wherein, In step 1.1), the specific process of co-melting solvent impregnation treatment is as follows: lactic acid and choline chloride are mixed in a molar ratio of 1-15:1 to prepare a co-melting solvent, and the heat-treated poplar veneer is soaked in the co-melting solvent and impregnated at a pressure of -1MPa for 12-48h, and then placed in a constant temperature and humidity box for curing treatment.

4. The method of making a modified meander-shaped furniture material according to claim 3, wherein, The curing treatment conditions are temperature of 20-25°C, humidity of 80-90% and time of 24h.

5. The method of making a modified sinuous furniture material of claim 1, wherein, In step 1.2), the specific process of ozonized vegetable oil impregnation treatment is as follows: silk gourd seed oil and linseed oil are atomized respectively and mixed with ozone at a ratio of 20-50:1, and the reaction product is filtered to obtain ozonized silk gourd seed oil and ozonized linseed oil, the ozonized silk gourd seed oil and the ozonized linseed oil are mixed at a mass ratio of 0.1-10:1 to prepare ozonized vegetable oil, the softened veneer is soaked in the ozonized vegetable oil and impregnated at a pressure of -1MPa for 24h, and then placed in a constant temperature and humidity box with a temperature of 25°C and a humidity of 40-80% for curing for 48h.

6. The method of making a modified serpentine furniture material of claim 1, wherein, In step (1), the specific process of the hot-pressing treatment is as follows: first, hot-pressing at a temperature of 160-200 ℃ and a pressure of 2-20 MPa for 10-60 min, then applying bending plate glue, and finally cold-pressing at room temperature and a pressure of 2-20 MPa for 30-90 min.

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