AU2021104560A4 - Preparation method of biomass-based foam sandwich board material for partition wall - Google Patents
Preparation method of biomass-based foam sandwich board material for partition wall Download PDFInfo
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- AU2021104560A4 AU2021104560A4 AU2021104560A AU2021104560A AU2021104560A4 AU 2021104560 A4 AU2021104560 A4 AU 2021104560A4 AU 2021104560 A AU2021104560 A AU 2021104560A AU 2021104560 A AU2021104560 A AU 2021104560A AU 2021104560 A4 AU2021104560 A4 AU 2021104560A4
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- 239000002028 Biomass Substances 0.000 title claims abstract description 46
- 239000006260 foam Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000005192 partition Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 9
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 9
- HOVAGTYPODGVJG-UVSYOFPXSA-N (3s,5r)-2-(hydroxymethyl)-6-methoxyoxane-3,4,5-triol Chemical compound COC1OC(CO)[C@@H](O)C(O)[C@H]1O HOVAGTYPODGVJG-UVSYOFPXSA-N 0.000 claims abstract description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 7
- HOVAGTYPODGVJG-UHFFFAOYSA-N methyl beta-galactoside Natural products COC1OC(CO)C(O)C(O)C1O HOVAGTYPODGVJG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 150000005676 cyclic carbonates Chemical class 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 4
- 229920000053 polysorbate 80 Polymers 0.000 claims description 4
- 239000010902 straw Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003063 flame retardant Substances 0.000 abstract description 4
- 239000006261 foam material Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 239000008098 formaldehyde solution Substances 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 238000007334 copolymerization reaction Methods 0.000 abstract 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/10—Rigid foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2371/02—Polyalkylene oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Emergency Medicine (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
This invention discloses preparation method of biomass-based foam sandwich
material for partition wall. The method comprises the following process steps:
Preparing the biomass foam sandwich material, compositing the sandwich material
with the surface panel, and other technical process. The invention adopts phenol,
polyethylene glycol, cyclic carbonate as multiphase composite liquefying agents and
concentrated sulfuric acid and phosphoric acid as mixed catalysts, which not only
accelerates the liquefaction conversion rate, but also introduces flame retardant
phosphorus-containing groups. In the process of resinifying, solid paraformaldehyde
is used to replace formaldehyde solution, and methyl glucoside is added to form
multiphase copolymerization system, which further improves the reaction activity,
reduces the formaldehyde emission, increases the flexibility of resin, improves the
hardness and brittleness of foam material and the defects of slag dropping, and makes
the solid content of resin reach more than 75% which issuitable for foaming. In the
foaming process, toluene sulfonic acid and N-hydroxymethy acrylamide are
selectedas curing agent. It can not only improve the curing efficiency, but also
improves the flame retardant effect. The compressive strength and flexural strength of
biomass foam sandwich composite boardare significantly improved, and it has
excellent properties of light weight, flame retardancy, sound absorption, moisture
resistance and heat insulation.
Description
Preparation method of biomass-based foam sandwich board material for partition wall
TECHNICAL FIELD The invention belongs to the technical fields of wood science and technology and green energy-saving building materials. And particularly relates to a preparation method of a kind of biomass-based foam sandwich board material for partition wall. It is prepared from agricultural straw or wood and bamboo processing residues through liquefaction, resinification, foaming, compositing and other processes.
BACKGROUND Plastic foam material has excellent properties such as light weight, heat insulation, sound absorption and moisture resistance, so it is widely used as sandwich material in the fields of light fast-installation wall, light packaging and room decoration. However, the production of plastic foam consumes excessive petrochemical resources, and the product is also flammable and difficult to degrade, which causes consumption of energy and rises environmental safety concerns. Therefore, it is of great significance to use renewable natural biomass materials instead of petrochemical products to develop light energy-saving building materials with flame retardancy and environmental protection.
SUMMARY The purpose of this invention is to provide preparation method of biomass-based foam sandwich board material for partition wall, In order to improve the utilization value of biomass materials, reduce the consumption of energy and materials, and improve the physical and mechanical properties, flame retardancy and environmental friendly performance of products, the invention provides a kind of foam sandwich board for partition wall by using agriculture, forestry and biomass materials. According to the technical scheme of the invention, the preparation method of the biomass-based foam sandwich board material for partition wall comprises the following process steps of preparing the biomass foam sandwich material, compositing the sandwich material with the surface panel, and other technical process Preparation of biomass foam materials (1) Charging 20% of the total amount of molten phenol, polyethylene glycol and cyclic carbonate into a reaction kettle, and simultaneously charging 20% of the total amount of the mixed catalyst of concentrated sulfuric acid and phosphoric acid into the reaction kettle, uniformly stirring and heating the mixture to 40-600 C. Drying and crushing agricultural straws or wood and bamboo processing residues, putting them into a reaction kettle, slowly charging the remaining 80% of molten phenol, polyethylene glycol and cyclic carbonate into the reaction kettle, and slowly charging the remaining 80% of concentrated sulfuric acid and phosphoric acid mixed catalyst into the reaction kettle. Continuously stirring and heating the mixture to 110-1400 C, and continuously reacting for 60-120 min. Cooling downbelow 800 C, slowly adding caustic soda solution, adjusting pH value, and continuously cooling down below 500 C. Adding methyl glucoside and paraformaldehyde into the mixture, stirring and heating to 80-900 C, let it continue to react, then cooling it downbelow 40 0C after the reaction is finished, and discharging the mixture to prepare foaming biomass liquefaction resin. (2) Adding the foamed biomass liquefaction resin, surfactant, foaming agent and curing agent into a container in sequence, stirring quickly and uniformly, pouring into a mold quickly, placing in an environment of 60-90 0C for foaming and curing, curing at 75 105 0C for 60-180 min, taking out and demoulding, and cooling down to prepare the biomass foam sandwich material. 1. Compositing biomass-based foam sandwich board with the surface panel (3) Slightly sanding the inner surface of the prepared thin surface bottom plate, coating with the room-temperature curing adhesive onit , placing the prepared biomass foam sandwich material between the coated surface and the bottom plate, pressurizing, unloading and taking out, stacking for more than 24h, and trimming to prepare the biomass-based foam sandwich material for partition wall. The method has the advantages that: 1. Adopting phenol, polyethylene glycol, cyclic carbonate as multiphase composite liquefier and concentrated sulfuric acid and phosphoric acid as mixed catalysts In the liquefaction process of agricultural and forestry waste residues and wood and bamboo processing residues, which not only accelerates the liquefaction conversion rate, but also converts it into low molecular structures with high reactivity, such as phenol type, furfural type, polyols and polycarboxylic acids that are low molecular structures with both soft and hard properties, and it introduces flame retardant phosphorus-containing groups. 2. In the process of resinifying, solid paraformaldehyde is used instead of formaldehyde solution, and methyl glucoside is added to form a tool system, which improves the reaction activity, reduces the formaldehyde emission, further enhances the flexibility of the resin, improves the hardness, brittleness and slag drop defects of foam materials, and makes the solid content of the resin reach more than 75% suitable for foaming. 3. In the foaming process, toluene sulfonic acid and N- hydroxymethy acrylamide are selected to be compounded. It can not only improve curing efficiency, but also catches formaldehyde and improve flame retardant effect. The compressive strength and flexural strength of biomass-based foam sandwich board composited with thin panel veneer are significantly improved, the surface decoration effect is good, and it has excellent properties of light weight, flame retardancy, sound absorption, moisture resistance and heat insulation.
DESCRIPTION OF THE INVENTION Embodiment 1 Adding 250g of melted phenol, 150g of polyethylene glycol, 50g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into a reaction kettle in turn, starting a stirrer, stirring uniformly, heating to 400 C, slowly adding 375g of wood powder in batches and slowly adding 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid at the same time. Stirring and heating the mixture to 135 0C, let it react for 90min, and cooling to 800 C, adding 140 g of neutralized caustic soda solution (40% by mass), slowly adding 240 g of caustic soda solution (40% by mass) when the temperature drops below 600 C, stirring it for 20min, then cooling to 0C, adding 82.5g of methyl glucoside and 375g of solid paraformaldehyde, and slowly heat to 850 C. Reacting for 90min, cooling to 400 C, and discharging for later use.
Biomass liquefaction foaming resin prepared under the above conditions is a dark brown viscous opaque liquid with viscosity of 5240mPa.s, solid content of 78.5%, pH value of 11.5, and storage period of not less than 20 days. Mixing 1OOg of biomass liquefaction foaming resin, 8g of surfactant compounded by tween -80 and OP-10(1:1), 10g of foaming agent with n-pentane and petroleum ether (mixed according to the mass ratio of 8: 2), 1Og of methyl benzene sulfonic acid and 2g of n-hydroxymethylacrylamide are added into a container in turn. Stirring the mixture evenly, and quickly pouring it into a mold, placing it in an environment of 750 C for foaming and curing, aging in an environment of 950 C for 90 minutes, taking it out and demoulding, and cooling it to prepare the biomass foam sandwich material. The apparent density, foaming ratio, compressive strength and water absorption of the biomass foam sandwich material prepared under the above conditions are 0.15g/cm3, 6 times, 0.42MPa and 6.2%, respectively. The thermal conductivity of the foam is 0.031 w/m k, the average sound absorption coefficient is 0.504 in the medium frequency range (250 ~ 1200 Hz), and the limiting oxygen index is 40.7. Two medium density fiberboard sheets with 3mm thickness are sanded on one side and coated with polyurethane adhesive (120g/m2), the biomass foam sandwich panel with 24mm thickness prepared above is placed in the middle, and one MDF sheet coated with glue is laid on the upper and lower surfaces respectively to form a slab; The slab was pressed in a press at a unit pressure of 0.15MPa for 40min, then taken out and placed for 24h, and then trimmed to make a biomass foam sandwich composite board with a thickness of 30 mm. The density of the composite board is 0.25g/cm3, the compressive strength is 0.62MPa, the flexural strength is 8.5MPa, the flexural modulus is 95.1MPa, the thermal conductivity of foam is 0.039w/m.k, the average sound absorption coefficient in the medium frequency range (250 ~ 1200 Hz) is 0.412, and the limiting oxygen index is 38.4. The composite board is very suitable for indoor light partition wall material. Embodiment 2 Adding 200g of melted phenol, 200g of polyethylene glycol, 50g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into a reaction kettle in turn, starting a stirrer, stirring uniformly, heating to 400 C, slowly adding
375g of wood powder in batches, and slowly adding 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid at the same time; Stir and heat to 1350 C, react for 90min, cool to 80 0C, add 140 g of neutralized caustic soda solution (40% by mass), slowly drop 240 g of caustic soda solution (40% by mass) when the temperature drops below 60 0C, stirring for 20min, then cool to 450C, add 85g of methyl glucoside and 400g of solid paraformaldehyde, and slowly heat to 850 C. Reacting for 120min, cooling to 400 C, and discharging for later use. Mixing 100g of biomass liquefaction foaming resin, 8g of surfactant compounded by tween -80 and OP-10(1:1), 10g of foaming agent with n-pentane and petroleum ether (mixed according to the mass ratio of 8: 2), 1Og of methyl benzene sulfonic acid and 1g of n-hydroxymethylacrylamide are added into a container in turn. Stirring the mixture evenly, and quickly pouring it into a mold, placing it in an environment of 750 C for foaming and curing, aging in an environment of 950 C for 90 minutes, taking it out and demoulding, and cooling it to prepare the biomass foam sandwich material. Two medium density fiberboard sheets with 3mm thickness are sanded on one side and coated with polyurethane adhesive (120g/m2), the biomass foam sandwich panel with 24mm thickness prepared above is placed in the middle, and one MDF sheet coated with glue is laid on the upper and lower surfaces respectively to form a slab. The slab was pressed in a press at a unit pressure of 0.15MPa for 60min, then taken out and placed for 24h, and then trimmed to make a biomass foam sandwich composite board with a thickness of 30 mm. Embodiment 3 Adding 300g of melted phenol, 100g of polyethylene glycol, 25g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into a reaction kettle in turn, starting a stirrer, stirring uniformly, heating to 400 C, slowly adding 375g of wood powder in batches, and slowly adding 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid at the same time; Stir and heat to 1350 C, reacting for 90min, then cooling to 80 0C, adding 140 g of neutralized caustic soda solution (40% by mass), slowly drop 240 g of caustic soda solution (40% by mass) when the temperature drops below 600 C, stirring for 20min, then cooling to 450 C, adding 75g of methyl glucoside and 345g of solid paraformaldehyde, and slowly heat to 85C. Reacting for 120min, cooling to 400 C, and discharging for later use. Mixing 10Og of biomass liquefaction foaming resin, 8g of surfactant compounded by tween -80 and OP-10(1:1), 12g of foaming agent with n-pentane and petroleum ether (mixed according to the mass ratio of 6:4), 8g of methyl benzene sulfonic acid and 2g of n-hydroxymethylacrylamide are added into a container in turn. Stirring the mixture evenly, and quickly pouring it into a mold, placing it in an environment of 750 C for foaming and curing, aging in an environment of 950 C for 90 minutes, taking it out and demoulding, and cooling it to prepare the biomass foam sandwich material. Two medium density fiberboard sheets with 3mm thickness are sanded on one side and coated with polyurethane adhesive (100g/m2), the biomass foam sandwich panel with 26mm thickness prepared above is placed in the middle, and one MDF sheet coated with glue is laid on the upper and lower surfaces respectively to form a slab. The slab was pressed in a press at a unit pressure of 0.15MPa for 60min, then taken out and placed for 24h, and then trimmed to make a biomass foam sandwich composite board with a thickness of 30 mm. The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent substitution and improvement made to the above embodiments by any person familiar with this profession according to the technical essence of the present invention without departing from the technical scheme of the present invention still falls within the protection scope of the technical scheme of the present invention.
Claims (7)
- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. Preparation method of biomass foam sandwich composite partition wall material is characterized in comprising the following steps: (1) Charging 20% of the total amount of molten phenol, polyethylene glycol and cyclic carbonate into a reaction kettle, and simultaneously charging 20% of the total amount of the mixed catalyst of concentrated sulfuric acid and phosphoric acid into the reaction kettle, uniformly stirring and heating to 40-600 C. Drying and crushing agricultural straws or wood and bamboo processing residues, which is put into a reaction kettle, slowly charging the remaining 80% of molten phenol, polyethylene glycol and cyclic carbonate into the reaction kettle, and slowly charging the remaining 80% of concentrated sulfuric acid and phosphoric acid mixed catalyst into the reaction kettle; Continuously stirring and heating to 110-1400 C, and continuously reacting for 60-120 min; Cooling down below 80 0C, slowly adding caustic soda solution, adjusting pH value, and continuously cooling down below 500 C. Adding methyl glucoside and paraformaldehyde, stirring and heating the mixture to 80-900 C, continuing to react, then cooling it to below 400C after the reaction is finished, and discharging the mixture to prepare foaming biomass liquefaction resin. (2) Adding the foamed biomass liquefaction resin, surfactant, foaming agent and curing agent into a container in sequence, stirring quickly and uniformly, pouring into a mold quickly, placing in an environment of 60-90 0C for foaming and curing, curing at 75 105 0C for 60-180 min, taking out and demoulding, and cooling to prepare the biomass foam sandwich material. (3) Slightly sanding the inner surface of the prepared thin surface bottom plate, coating the normal-temperature curing adhesive on the inner thin surface, placing the prepared biomass foam sandwich material between the coated surface and the bottom plate, pressurizing, unloading and taking out, stacking for more than 24h, and trimming to prepare the biomass foam sandwich composite partition wall material.
- 2. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that in step (1), the mass concentration of caustic soda solution is 40%, and the pH value is adjusted to 10.0-13.0.
- 3. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that stirring for 20-40 min in step (1), heating to 80-90 0C, and continuing to react for 40-120 min.
- 4. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that the surfactant in step (2) is a mixture of Tween -80 and OP-10.
- 5. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that the foaming agent in step (2) is a mixture of n-pentane and petroleum ether.
- 6. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that the curing agent in step (2) is a mixture of toluenesulfonic acid and N- hydroxymethylacrylamide.
- 7. Preparation method of biomass foam sandwich composite partition wall material, according to claim 1, is characterized in that in the step (3), the pressure is increased for -120min under the unit pressure of 0.1-0.3MPa.
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| AU2021104560A AU2021104560A4 (en) | 2021-07-26 | 2021-07-26 | Preparation method of biomass-based foam sandwich board material for partition wall |
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| AU2021104560A AU2021104560A4 (en) | 2021-07-26 | 2021-07-26 | Preparation method of biomass-based foam sandwich board material for partition wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2624405A (en) * | 2022-11-16 | 2024-05-22 | Advanced Innergy Ltd | Thermal insulating structures |
-
2021
- 2021-07-26 AU AU2021104560A patent/AU2021104560A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2624405A (en) * | 2022-11-16 | 2024-05-22 | Advanced Innergy Ltd | Thermal insulating structures |
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