CN114316615B - Heat-insulation sound-insulation composite wallboard - Google Patents
Heat-insulation sound-insulation composite wallboard Download PDFInfo
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- CN114316615B CN114316615B CN202111525313.5A CN202111525313A CN114316615B CN 114316615 B CN114316615 B CN 114316615B CN 202111525313 A CN202111525313 A CN 202111525313A CN 114316615 B CN114316615 B CN 114316615B
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- 238000009413 insulation Methods 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000003756 stirring Methods 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 36
- 229920005989 resin Polymers 0.000 claims description 36
- 239000000843 powder Substances 0.000 claims description 32
- 239000002023 wood Substances 0.000 claims description 32
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 30
- 239000004964 aerogel Substances 0.000 claims description 30
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 21
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000002360 preparation method Methods 0.000 claims description 21
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims description 18
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 239000000314 lubricant Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 229920001577 copolymer Polymers 0.000 claims description 13
- 235000013312 flour Nutrition 0.000 claims description 12
- 229920001903 high density polyethylene Polymers 0.000 claims description 12
- 239000004700 high-density polyethylene Substances 0.000 claims description 12
- 229920001684 low density polyethylene Polymers 0.000 claims description 12
- 239000004702 low-density polyethylene Substances 0.000 claims description 12
- 229920001179 medium density polyethylene Polymers 0.000 claims description 12
- 239000004701 medium-density polyethylene Substances 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 10
- 230000002745 absorbent Effects 0.000 claims description 10
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 10
- 229920013716 polyethylene resin Polymers 0.000 claims description 10
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 9
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims description 9
- 229940106681 chloroacetic acid Drugs 0.000 claims description 9
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- 235000006408 oxalic acid Nutrition 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000000967 suction filtration Methods 0.000 claims description 7
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- -1 compatilizer Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 229920001587 Wood-plastic composite Polymers 0.000 abstract description 3
- 239000011155 wood-plastic composite Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 241000219000 Populus Species 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the field of wood-plastic composite materials, in particular to a heat-insulation sound-insulation composite wallboard, which comprises the following components: the composite wallboard has the advantages that the prepared thermal-insulation and sound-insulation composite wallboard has good mechanical strength, the average sound absorption coefficient is 0.53-0.56, the thermal conductivity coefficient is 0.063-0.066W/(m.K), and the thermal-insulation and sound-insulation effects are excellent.
Description
Technical Field
The invention relates to the field of wood-plastic composite materials, in particular to a heat-insulation sound-insulation composite wallboard.
Background
At present, wood-plastic composite wallboards are widely used outdoors, but the existing wallboards are usually general in mechanical property, the bending strength is only about 20MPa, the wallboard can crack, be damaged and even be broken after being used for a period of time, and the wallboard has poor heat insulation and sound insulation effects and is difficult to meet the use requirements of middle-grade and high-grade consumers.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the technical problems, the invention provides a heat-insulation and sound-insulation composite wallboard.
The adopted technical scheme is as follows:
a heat and sound insulation composite wallboard comprises the following components:
carboxymethylated wood powder, polyethylene resin, aerogel, a silane coupling agent, a compatilizer, an antioxidant B225, an ultraviolet absorbent UV531 and a lubricant STR530.
Further, the paint comprises the following components in parts by weight:
30-50 parts of carboxymethylated wood powder, 20-30 parts of polyethylene resin, 20-30 parts of aerogel, 1-1.5 parts of silane coupling agent, 1-1.5 parts of compatilizer, 5363-0.5 part of antioxidant B2250.1, 0.5 part of ultraviolet absorbent UV5310.1 and lubricant STR530.
Further, the preparation method of the carboxymethylated wood flour comprises the following steps:
adding wood powder into isopropanol, adding a sodium hydroxide solution, stirring for 1-3h to obtain a solution A, dissolving chloroacetic acid with the isopropanol, adding the solution A into the solution A, stirring, heating to 80-85 ℃, reacting for 1-2h to obtain a solution B, finally adjusting the pH of the system to 7-8 with acetic acid, performing suction filtration, and drying.
Further, the mass ratio of the wood flour to the chloroacetic acid is 1:1-1.3.
Further, the polyethylene resin is prepared from a high-density polyethylene resin, a medium-density polyethylene resin and a low-density polyethylene resin in a mass ratio of 4-5:1: 1-3.
Further, the aerogel is SiO 2 /ZrO 2 An aerogel.
Further, the SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
s1: under ice bath, uniformly mixing ethyl orthosilicate, methyltriethoxysilane and ethanol, slowly dropwise adding dilute nitric acid, heating to reflux reaction for 3-5h after dropwise adding, and obtaining SiO 2 Sol;
s2: adding zirconium nitrate into water to obtain solution, adding oxalic acid solution dropwise, stirring and heating to 50-60 deg.C, stirring for 10-30min, adding glycerol, and stirring for 3-5 hr to obtain ZrO 2 Sol;
s3: zrO 2 is mixed with 2 Dropping the sol into SiO 2 Stirring in the sol for 1-2h, vacuum drying at 50-60 ℃ for 10-15h, grinding into powder, heating to 400-450 ℃ under the protection of inert gas, roasting for 2-4h, and recovering to room temperature.
Further, the mass ratio of zirconium nitrate to tetraethoxysilane is 1:7-8.
Further, the compatilizer is a composition of maleic anhydride grafted ethylene-1-octene copolymer and maleic anhydride grafted polyethylene.
The invention also provides a preparation method of the heat-insulation and sound-insulation composite wallboard, which comprises the following steps:
the method comprises the steps of adding carboxymethylated wood powder, polyethylene resin, aerogel, a silane coupling agent, a compatilizer, an antioxidant B225 and an ultraviolet absorber UV531 into a high-speed mixer, mixing for 20-40min at 80-90 ℃, adding into a parallel double-screw extruder, extruding and granulating, mixing the obtained granules with a lubricant STR530, and adding into a conical double-screw extruder for extrusion molding.
The invention has the beneficial effects that:
the invention provides a heat-insulating sound-insulating composite wallboard, wherein wood flour is subjected to carboxymethylation treatment, the surface free energy of the wood flour is improved, a polyethylene resin matrix can be well wetted and spread on the surface of the wood flour at a processing temperature, gaps and stress concentration areas at the interface of the wood flour and the polyethylene resin matrix are reduced, the bonding performance between the wood flour and the polyethylene resin is improved, the overall performance of the composite material is greatly improved, a good composite effect is generated, aerogel is a porous material with high specific surface area, high porosity and low density, the existence of a pore structure is favorable for sound absorption and heat preservation, and SiO 2 /ZrO 2 Aerogel in contrast to single component SiO 2 Aerogel and ZrO 2 The heat-insulation sound-insulation composite wallboard prepared by the invention has good mechanical strength, the average sound absorption coefficient is 0.53-0.56, the thermal conductivity is 0.063-0.066W/(m.K), and the heat-insulation sound-insulation effect is excellent.
Detailed Description
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
Example 1:
a heat-insulation sound-insulation composite wallboard comprises the following components in parts by weight:
50 parts of carboxymethylated wood powder, 16 parts of high-density polyethylene resin, 4 parts of medium-density polyethylene resin, 4 parts of low-density polyethylene resin and SiO 2 /ZrO 2 30 parts of aerogel, 3238 parts of silane coupling agent kh5501.5 parts of maleic anhydride grafted ethylene-1-octene copolymer, 0.5 part of maleic anhydride grafted polyethylene, 3262 parts of antioxidant B, 2250.5 parts of ultraviolet absorbent UV5310.5 parts and lubricant STR530 parts.
The preparation method of the carboxymethylated wood powder comprises the following steps:
adding 150g of poplar powder into 750mL of isopropanol, adding 400mL of sodium hydroxide solution with the mass concentration of 30% and stirring for 3h to obtain solution A, dissolving 200g of chloroacetic acid with 400mL of isopropanol, adding the solution A into the solution A, stirring and heating to 85 ℃ to react for 2h to obtain solution B, finally adjusting the pH of the system to 7 by using acetic acid with the mass concentration of 50%, carrying out suction filtration and drying.
SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
under ice bath, 208g of ethyl orthosilicate, 142g of methyltriethoxysilane and 400mL of ethanol are uniformly mixed, 70mL of dilute nitric acid with the molar concentration of 0.12mol/L is slowly dripped, and after dripping is finished, the temperature is raised to reflux reaction for 5 hours to obtain SiO 2 Sol, adding 53.6g of zirconium nitrate into 200mL of water to prepare a solution, then adding 13.8mL of oxalic acid solution with the molar concentration of 2mol/L dropwise, stirring and heating to 60 ℃, keeping the temperature and stirring for 30min, then adding 50mL of glycerol, and continuously stirring for 5h to obtain ZrO 2 Sol of ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 2h, vacuum drying at 60 ℃ for 15h, grinding into powder, heating to 450 ℃ under the protection of inert gas, roasting for 4h, and recovering to room temperature.
The preparation method of the heat-insulating sound-insulating composite wallboard comprises the following steps:
carboxymethylated wood powder, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, siO 2 /ZrO 2 Aerogel, silane coupling agent kh550, maleic anhydride grafted ethylene-1-octene copolymer and maleic acidAdding anhydride grafted polyethylene, an antioxidant B225 and an ultraviolet absorbent UV531 into a high-speed mixer, mixing for 40min at 90 ℃, adding into a parallel double-screw extruder, extruding and granulating, wherein the barrel temperature is 190-210 ℃, the screw rotating speed is 80-120r/min, mixing the obtained granules with a lubricant STR530, adding into a conical double-screw extruder, and extruding and molding, wherein the barrel temperature is 150-190 ℃, and the screw rotating speed is 10-20r/min.
Example 2:
a heat-insulation sound-insulation composite wallboard comprises the following components in parts by weight:
30 parts of carboxymethylated wood powder, 16 parts of high-density polyethylene resin, 4 parts of medium-density polyethylene resin, 4 parts of low-density polyethylene resin and SiO 2 /ZrO 2 20 parts of aerogel, 5501 parts of silane coupling agent, 0.5 part of maleic anhydride grafted ethylene-1-octene copolymer, 0.5 part of maleic anhydride grafted polyethylene, 5363 parts of antioxidant B2250.1, 3242 parts of ultraviolet absorbent UV5310.1 and STR530 parts of lubricant.
The preparation method of the carboxymethylated wood powder comprises the following steps:
adding 150g of poplar powder into 750mL of isopropanol, adding 400mL of sodium hydroxide solution with the mass concentration of 30% and stirring for 1h to obtain solution A, dissolving 200g of chloroacetic acid with 400mL of isopropanol, adding the solution A into the solution A, stirring and heating to 80 ℃ to react for 1h to obtain solution B, finally adjusting the pH of the system to 7 by using acetic acid with the mass concentration of 50%, carrying out suction filtration and drying.
SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
under ice bath, 208g of ethyl orthosilicate, 142g of methyltriethoxysilane and 400mL of ethanol are uniformly mixed, 70mL of dilute nitric acid with the molar concentration of 0.12mol/L is slowly dripped, and after dripping is finished, the temperature is raised to reflux reaction for 3 hours to obtain SiO 2 Sol, adding 53.6g of zirconium nitrate into 200mL of water to prepare a solution, then adding 13.8mL of oxalic acid solution with the molar concentration of 2mol/L dropwise, stirring and heating to 50 ℃, keeping the temperature and stirring for 10min, then adding 50mL of glycerol, and continuously stirring for 3h to obtain ZrO 2 Sol of ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 1 hr, vacuum drying at 50 deg.C for 10 hr, grinding into powder, and introducing into inert gasHeating to 400 ℃ under the protection of the body, roasting for 2h, and recovering the room temperature.
The preparation method of the heat-insulating sound-insulating composite wallboard comprises the following steps:
carboxymethylated wood powder, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, siO 2 /ZrO 2 Adding aerogel, a silane coupling agent kh550, a maleic anhydride grafted ethylene-1-octene copolymer, maleic anhydride grafted polyethylene, an antioxidant B225 and an ultraviolet absorber UV531 into a high-speed mixer, mixing for 20min at 80 ℃, adding into a parallel double-screw extruder, extruding and granulating, wherein the barrel temperature is 190-210 ℃, the screw rotating speed is 80-120r/min, mixing the obtained granules with a lubricant STR530, adding into a conical double-screw extruder, and extruding and molding, wherein the barrel temperature is 150-190 ℃ and the screw rotating speed is 10-20r/min.
Example 3:
a heat-insulation sound-insulation composite wallboard comprises the following components in parts by weight:
30 parts of carboxymethylated wood powder, 16 parts of high-density polyethylene resin, 4 parts of medium-density polyethylene resin, 4 parts of low-density polyethylene resin and SiO 2 /ZrO 2 30 parts of aerogel, 5501 parts of silane coupling agent, 0.5 part of maleic anhydride grafted ethylene-1-octene copolymer, 0.5 part of maleic anhydride grafted polyethylene, 5363 parts of antioxidant B2250.5 parts, 3242 parts of ultraviolet absorbent UV5310.1 parts and lubricant STR530 parts.
The preparation method of the carboxymethylated wood powder comprises the following steps:
adding 150g of poplar powder into 750mL of isopropanol, adding 400mL of sodium hydroxide solution with the mass concentration of 30% and stirring for 3h to obtain solution A, dissolving 200g of chloroacetic acid with 400mL of isopropanol, adding the solution A into the solution A, stirring and heating to 80 ℃ to react for 2h to obtain solution B, finally adjusting the pH of the system to 7 by using acetic acid with the mass concentration of 50%, carrying out suction filtration and drying.
SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
under ice bath, 208g of ethyl orthosilicate, 142g of methyltriethoxysilane and 400mL of ethanol are uniformly mixed, and 70mL of dilute nitric acid with the molar concentration of 0.12mol/L is slowly dripped into the mixtureAfter that, the temperature is raised to reflux reaction for 3 hours to obtain SiO 2 Sol, adding 53.6g of zirconium nitrate into 200mL of water to prepare a solution, then adding 13.8mL of oxalic acid solution with the molar concentration of 2mol/L dropwise, stirring and heating to 60 ℃, keeping the temperature and stirring for 10min, then adding 50mL of glycerol, and continuously stirring for 5h to obtain ZrO 2 Sol of ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 1h, vacuum drying at 60 ℃ for 10h, grinding into powder, heating to 450 ℃ under the protection of inert gas, roasting for 2h, and recovering to room temperature.
The preparation method of the heat-insulating sound-insulating composite wallboard comprises the following steps:
carboxymethylated wood flour, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, siO 2 /ZrO 2 Adding aerogel, a silane coupling agent kh550, a maleic anhydride grafted ethylene-1-octene copolymer, maleic anhydride grafted polyethylene, an antioxidant B225 and an ultraviolet absorber UV531 into a high-speed mixer, mixing for 20min at 90 ℃, adding into a parallel double-screw extruder, extruding and granulating, wherein the barrel temperature is 190-210 ℃, the screw rotating speed is 80-120r/min, mixing the obtained granules with a lubricant STR530, adding into a conical double-screw extruder, and extruding and molding, wherein the barrel temperature is 150-190 ℃ and the screw rotating speed is 10-20r/min.
Example 4:
a heat-insulation sound-insulation composite wallboard comprises the following components in parts by weight:
50 parts of carboxymethylated wood powder, 16 parts of high-density polyethylene resin, 4 parts of medium-density polyethylene resin, 4 parts of low-density polyethylene resin and SiO 2 /ZrO 2 20 parts of aerogel, 3238 parts of silane coupling agent kh5501.5 parts, 0.5 part of maleic anhydride grafted ethylene-1-octene copolymer, 0.5 part of maleic anhydride grafted polyethylene, 3262 parts of antioxidant B, 2250.1 parts of ultraviolet absorbent UV5310.5 parts and lubricant STR530 parts.
The preparation method of the carboxymethylated wood powder comprises the following steps:
adding 150g of poplar powder into 750mL of isopropanol, adding 400mL of sodium hydroxide solution with the mass concentration of 30% and stirring for 1h to obtain solution A, dissolving 200g of chloroacetic acid with 400mL of isopropanol, adding the solution A into the solution A, stirring and heating to 85 ℃ to react for 1h to obtain solution B, finally adjusting the pH of the system to 7 by using acetic acid with the mass concentration of 50%, carrying out suction filtration and drying.
SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
under ice bath, 208g of ethyl orthosilicate, 142g of methyltriethoxysilane and 400mL of ethanol are uniformly mixed, 70mL of dilute nitric acid with the molar concentration of 0.12mol/L is slowly dripped, and after dripping is finished, the temperature is raised to reflux reaction for 5 hours to obtain SiO 2 Sol, adding 53.6g of zirconium nitrate into 200mL of water to prepare a solution, then adding 13.8mL of oxalic acid solution with the molar concentration of 2mol/L dropwise, stirring and heating to 50 ℃, keeping the temperature and stirring for 30min, then adding 50mL of glycerol, and continuously stirring for 3h to obtain ZrO 2 Sol of ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 2h, vacuum drying at 50 ℃ for 15h, grinding into powder, heating to 400 ℃ under the protection of inert gas, roasting for 4h, and recovering to room temperature.
The preparation method of the heat-insulating sound-insulating composite wallboard comprises the following steps:
carboxymethylated wood flour, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, siO 2 /ZrO 2 Adding aerogel, a silane coupling agent kh550, a maleic anhydride grafted ethylene-1-octene copolymer, maleic anhydride grafted polyethylene, an antioxidant B225 and an ultraviolet absorber UV531 into a high-speed mixer, mixing for 40min at 80 ℃, adding into a parallel double-screw extruder, extruding and granulating, wherein the barrel temperature is 190-210 ℃, the screw rotating speed is 80-120r/min, mixing the obtained granules with a lubricant STR530, adding into a conical double-screw extruder, and extruding and molding, wherein the barrel temperature is 150-190 ℃ and the screw rotating speed is 10-20r/min.
Example 5:
a heat-insulation sound-insulation composite wallboard comprises the following components in parts by weight:
40 parts of carboxymethylated wood powder, 16 parts of high-density polyethylene resin, 4 parts of medium-density polyethylene resin, 4 parts of low-density polyethylene resin and SiO 2 /ZrO 2 25 parts of aerogel, 5501 parts of silane coupling agent kh, 0.5 part of maleic anhydride grafted ethylene-1-octene copolymer and 0.5 part of maleic anhydride grafted ethylene-1-octene copolymer0.5 part of polyethylene, 5363 parts of antioxidant B2250.2 parts, 3242 parts of ultraviolet absorbent UV5310.1 parts and lubricant STR530 parts.
The preparation method of the carboxymethylated wood powder comprises the following steps:
adding 150g of poplar powder into 750mL of isopropanol, adding 400mL of sodium hydroxide solution with the mass concentration of 30% and stirring for 3h to obtain solution A, dissolving 200g of chloroacetic acid with 400mL of isopropanol, adding the solution A into the solution A, stirring and heating to 85 ℃ to react for 2h to obtain solution B, finally adjusting the pH of the system to 7 by using acetic acid with the mass concentration of 50%, carrying out suction filtration and drying.
SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
under ice bath, 208g of tetraethoxysilane, 142g of methyltriethoxysilane and 400mL of ethanol are uniformly mixed, 70mL of dilute nitric acid with the molar concentration of 0.12mol/L is slowly dripped, and the temperature is raised to reflux reaction for 3 hours after dripping is finished to obtain SiO 2 Sol, adding 53.6g of zirconium nitrate into 200mL of water to prepare a solution, then adding 13.8mL of oxalic acid solution with the molar concentration of 2mol/L dropwise, stirring and heating to 60 ℃, keeping the temperature and stirring for 20min, then adding 50mL of glycerol, and continuously stirring for 5h to obtain ZrO 2 Sol of ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 2h, vacuum drying at 60 ℃ for 12h, grinding into powder, heating to 450 ℃ under the protection of inert gas, roasting for 3h, and recovering to room temperature.
The preparation method of the heat-insulating sound-insulating composite wallboard comprises the following steps:
carboxymethylated wood powder, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, siO 2 /ZrO 2 Adding aerogel, a silane coupling agent kh550, a maleic anhydride grafted ethylene-1-octene copolymer, maleic anhydride grafted polyethylene, an antioxidant B225 and an ultraviolet absorber UV531 into a high-speed mixer, mixing for 30min at 80 ℃, adding into a parallel double-screw extruder, extruding and granulating, wherein the barrel temperature is 190-210 ℃, the screw rotating speed is 80-120r/min, mixing the obtained granules with a lubricant STR530, adding into a conical double-screw extruder, and extruding and molding, wherein the barrel temperature is 150-190 ℃ and the screw rotating speed is 10-20r/min.
Comparative example 1:
essentially the same as in example 1, except that the wood flour was not carboxymethylated.
Comparative example 2:
essentially the same as in example 1, except that SiO was not added 2 /ZrO 2 An aerogel.
Comparative example 3:
substantially the same as in example 1 except that the ethylene-1-octene copolymer was grafted without adding maleic anhydride.
And (4) performance testing:
and (3) performance testing: the impact performance test is carried out according to an ASTM D256 method;
the bending performance is tested according to an ASTMD790 method;
the tensile property is tested according to an ASTM D638 method, and the tensile speed is 50mm/min;
the sound insulation performance is tested according to the method GB/T5266-2006;
the heat conductivity coefficient is tested according to the GB/T3139-2005 method;
the test results are shown in table 1 below:
table 1:
as shown in the above Table 1, the heat and sound insulation composite wallboard prepared by the invention has good mechanical strength, the average sound absorption coefficient is 0.53-0.56, the heat conductivity coefficient is 0.063-0.066W/(m.K), and the heat and sound insulation effect is excellent.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A heat-insulation sound-insulation composite wallboard is characterized by comprising the following components in parts by weight:
30-50 parts of carboxymethylated wood powder, 20-30 parts of polyethylene resin, 20-30 parts of aerogel, 1-1.5 parts of silane coupling agent, 1-1.5 parts of compatilizer, 5363-0.5 part of antioxidant B2250.1, 0.5 part of ultraviolet absorbent UV5310.1 and lubricant STR530;
the preparation method of the carboxymethylated wood flour comprises the following steps:
adding wood powder into isopropanol, adding a sodium hydroxide solution, stirring for 1-3h to obtain a solution A, dissolving chloroacetic acid in the isopropanol, adding the solution A into the solution A, stirring, heating to 80-85 ℃, reacting for 1-2h to obtain a solution B, finally adjusting the pH of the system to 7-8 with acetic acid, performing suction filtration, and drying;
the polyethylene resin is prepared from high-density polyethylene resin, medium-density polyethylene resin and low-density polyethylene resin according to the mass ratio of 4-5:1: 1-3;
the aerogel is SiO 2 /ZrO 2 Aerogel of said SiO 2 /ZrO 2 The preparation method of the aerogel comprises the following steps:
s1: under ice bath, uniformly mixing ethyl orthosilicate, methyltriethoxysilane and ethanol, slowly dropwise adding dilute nitric acid, heating to reflux reaction for 3-5h after dropwise adding, and obtaining SiO 2 Sol;
s2: adding zirconium nitrate into water to obtain solution, adding oxalic acid solution dropwise, stirring and heating to 50-60 deg.C, stirring for 10-30min, adding glycerol, and stirring for 3-5 hr to obtain ZrO 2 Sol;
s3: is reacted with ZrO 2 Dropping the sol into SiO 2 Stirring in sol for 1-2h, vacuum drying at 50-60 deg.C for 10-15h, grinding into powder, heating to 400-450 deg.C under protection of inert gas, calcining for 2-4h, and recovering to room temperature.
2. The thermal and acoustical insulation composite wallboard of claim 1 wherein the mass ratio of wood flour to chloroacetic acid is 1:1-1.3.
3. The thermal and acoustic insulation composite wallboard of claim 1 wherein the mass ratio of zirconium nitrate to ethyl orthosilicate is 1:7-8.
4. The thermal and acoustical insulation composite wallboard of claim 1 wherein said compatibilizer is a combination of maleic anhydride grafted ethylene-1-octene copolymer, maleic anhydride grafted polyethylene.
5. A preparation method of the heat-insulating and sound-insulating composite wallboard as claimed in any one of claims 1-4, characterized in that carboxymethylated wood powder, polyethylene resin, aerogel, silane coupling agent, compatilizer, antioxidant B225 and ultraviolet absorbent UV531 are added into a high-speed mixer, mixed for 20-40min at 80-90 ℃, then added into a parallel double-screw extruder for extrusion granulation, and the obtained granules are mixed with lubricant STR530 and then added into a conical double-screw extruder for extrusion molding.
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Citations (2)
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|---|---|---|---|---|
| CN103436043A (en) * | 2013-08-20 | 2013-12-11 | 中国科学院过程工程研究所 | Heat insulating and sound insulating wood-plastic composite and preparation method thereof |
| CN110527167A (en) * | 2019-08-12 | 2019-12-03 | 江苏二十六度节能科技有限公司 | A kind of ecological wood-plastic material |
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| CN103436043A (en) * | 2013-08-20 | 2013-12-11 | 中国科学院过程工程研究所 | Heat insulating and sound insulating wood-plastic composite and preparation method thereof |
| CN110527167A (en) * | 2019-08-12 | 2019-12-03 | 江苏二十六度节能科技有限公司 | A kind of ecological wood-plastic material |
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| ZrO2-SiO2复合气凝胶的制备及其稳定性研究;朱俊阳等;《现代技术陶瓷》;20160215;第37卷(第1期);第47-53页 * |
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Application publication date: 20220412 Assignee: Hunan Lushan Xiaoyumu Villa Engineering Co.,Ltd. Assignor: HUNAN LUSHANG RESIDENTIAL INDUSTRIAL TECHNOLOGY Co.,Ltd. Contract record no.: X2024980006769 Denomination of invention: A type of thermal insulation and sound insulation composite wall panel Granted publication date: 20230310 License type: Common License Record date: 20240606 |