CN110204773A - The preparation process of EPS base light flame-retardant Wood plastic boards - Google Patents
The preparation process of EPS base light flame-retardant Wood plastic boards Download PDFInfo
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- CN110204773A CN110204773A CN201910465140.9A CN201910465140A CN110204773A CN 110204773 A CN110204773 A CN 110204773A CN 201910465140 A CN201910465140 A CN 201910465140A CN 110204773 A CN110204773 A CN 110204773A
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- 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
- C08J9/0028—Use of organic additives containing nitrogen
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- 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
- C08J9/0038—Use of organic additives containing phosphorus
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- 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
- C08J9/0066—Use of inorganic compounding ingredients
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- 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
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/228—Forming foamed products
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- 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
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08J2361/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
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- 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
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- 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
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
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- 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
- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2461/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2461/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08J2461/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The preparation method of present invention offer EPS base light flame-retardant Wood plastic boards, it include: 1) to stock up by following quality than component proportion: expandable polystyrene 30%-60%, wood shavings 20%-60%, adhesive 10%-30%, melamine phosphate 5%-10%, hypo-aluminum orthophosphate 4%-9% and curing agent 1%；2) it takes EPS beads to be put into sieve, is cured -50 seconds 40 seconds in steam, be placed at room temperature for 10 hours；Curing agent is dissolved into urea-formaldehyde glue and sticks agent and wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator and is uniformly mixed, mixture is taken out；The EPS bead of curing is put into low-speed agitator and is mixed slowly, blender will be added in three batches added with the urea-formaldehyde glue and sticks agent of curing agent and wood shavings mixture, wood shavings and fire retardant is made equably to be sticked to EPS surface of beads；The EPS bead for being stained with wood shavings and fire retardant is put into mold, and puts it into 100 DEG C -130 DEG C of baking oven and places 55 minutes to 60 minutes.
Description
Technical field
The present invention relates to the preparation work methods of a kind of preparation of Wood plastic boards, especially EPS base light flame-retardant Wood plastic boards.
Background technique
The material that wood plastic composite is made of timber and thermoplastic or thermosetting material, with traditional wooden material
Material and plastics compare, it is a kind of product that comparison is new.Wood plastic composite rapidly develops at present, it is widely answered
For in daily life, such as: building, door and window, floor etc..
The matrix of general wood plastic composite is polypropylene, polyvinyl chloride, polylactic acid etc., the matrix that the present invention uses for
Expandable polystyrene (EPS), can be cured by steam, be put into mold and foamed, can production department's density is low, quality is small
Plate.
Due to the shortage of timber resources, demand of the people to timber increasingly increases, and Wood-plastic material of the present invention can recycle
Discarded sawdust is as raw material, so Wood-plastic material development is very necessary.Wood plastic boards of the invention have excellent performance: first
First, EPS can mitigate weight as matrix, produce low-density plate, be beneficial to energy conservation emission reduction；Secondly, particieboard source is wide
It is general and can recycle；Finally, Wood plastic boards production cost of the invention is low.But timber and plastic substrate belong to easily
Combustion things, the application of the plate of the present invention of this problem limitation, so studying its flame retardant property becomes key especially.
EPS base light flame-retardant Wood plastic boards are by wood shavings, expandable polystyrene, urea-formaldehyde glue and sticks agent, curing agent and resistance
Fire agent composition.The flame-retardant system belongs to inflatable flame-retardant system, is halogen-free and environment-protecting and non-poisonous, in combustion, fire retardant
For melamine phosphate as gas source and acid source, wood shavings serve as the carbon source in intumescent system, and carbon source mainly generates layer of charcoal, acid source
Dehydration occurs, promotes into charcoal, gas source generates non-ignitable or fire retardant gas, oxygen concentration is watered down, so that it is heat-insulated to play fire insulation
Effect.Flame-retardant wood-plastic plate not only has a good flame retardant effect, and without containing halogens and density it is low, meet environmental protection
It is required that；The board cost is low, and performance is good, increasingly the attention by researcher and enterprise.
Summary of the invention
The present invention proposes the preparation, and it is an object of the present invention to provide EPS base light flame-retardant Wood plastic boards in view of the above technical problem
Work method produces a kind of novel light wood-plastic plate, and does flame retardant treatment on this basis, so that it is with nonflammable
Feature, finally making finished product is light flame-retardant Wood plastic boards.
The purpose of the present invention can be achieved through the following technical solutions:
1, the preparation method of EPS base light flame-retardant Wood plastic boards,
This method comprises:
(1) it stocks up according to following quality than component proportion:
Expandable polystyrene 30%-60%, wood shavings 20%-60%, adhesive 10%-30%, melamine phosphate
5%-10%, hypo-aluminum orthophosphate 4%-9% and curing agent 1%；
(2) the expandable polystyrene EPS beads for weighing certain mass are put on sieve, and sieve is put on boiling water pot
Side, cures -50 seconds 40 seconds in steam, and taking-up, which is placed in, is placed at room temperature for 10 hours；Curing agent is dissolved into urea-formaldehyde glue and sticks agent
And wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator and are uniformly mixed, then mixture is taken out；?
The expandable polystyrene bead of curing, which is put into low-speed agitator, mixes slowly it, will be added with the urea-formaldehyde glue and sticks agent of curing agent
In wood shavings mixture difference in three batches secondary addition blender, and adhesive is first added every time, wood shavings and fire retardant is then added
Mixture, so that wood shavings and fire retardant are equably sticked to EPS surface of beads；The EPS pearl for being stained with wood shavings and fire retardant that will be obtained
Grain is put into mold, and is put it into 100 DEG C -130 DEG C of baking oven and is placed 55 minutes to 60 minutes, and mold, progress room are taken out
Temperature is cooled down and is sampled.
2, according to above-mentioned 1 the method, the wood shavings are bamboo and woods fiber wood shavings, one kind of Aspen wood shavings or mixture.
3, according to above-mentioned 1 the method, the adhesive is Lauxite of the solid content in 50%-60%.
4, according to above-mentioned 1 the method, the compound flame retardant includes melamine phosphate and hypo-aluminum orthophosphate.
5, according to above-mentioned 1 the method, the curing agent is one kind or mixture of ammonium chloride and ammonium sulfate.
6, according to above-mentioned 1 the method, the EPS is partial size 1.2-1.8mm, one step foaming multiplying power be 70-85 times can
Expanded polystyrene.
The present invention is using expandable polystyrene and wood shavings as matrix, and urea-formaldehyde glue and sticks agent is as adhesive, so that can be swollen
Swollen polystyrene and wood shavings connect；Curing agent allows urea-formaldehyde glue and sticks agent faster to solidify as a kind of filler；Fire retardant is made
For another filler, so that Wood plastic boards oxygen index (OI) improves, less easy firing delays fire spread in the process of burning
Time escapes from the fire scene for people in fire and provides advantage.
Expandable polystyrene used in the present invention, after foaming, density is low, meets energy-saving and emission-reduction.Institute of the present invention
The wood shavings used derive from residue, from a wealth of sources and protection forest resourceies.Compound flame retardant used in the present invention, with plane
Hua Kewei intumescent system can generate very thick carbon-coating, while carbon-coating is crosslinked and releases vapor in combustion process,
Charring layer intensity is improved, has completely cut off the conduction of heat and has reduced rate of heat production, extended the resistance to combustion time.
Specific embodiment
The component and content of the flame-retardant wood-plastic plate:
Expandable polystyrene (30%-60%), wood shavings (20%-60%), urea-formaldehyde glue and sticks agent (10%-30%), solidification
Agent (1%), compound flame retardant (10%-20%).
EPS of the present invention is partial size 1.2-1.8mm, the expandable polystyrene that one step foaming multiplying power is 70-85 times.
Wood shavings of the present invention are bamboo and woods fiber wood shavings, one of wooden shavings such as Aspen wood shavings or several mixed
Close object.
Curing agent of the present invention is one of ammonium salts such as ammonium chloride, ammonium sulfate or several mixtures.
Compound flame retardant of the present invention is the mixture of melamine phosphate and hypo-aluminum orthophosphate.
Adhesive of the present invention is Lauxite of the solid content in 50%-60%.The invention the following steps are included:
(1) it matches and stocks up according to following components: expandable polystyrene (30%-60%), wood shavings (20%-60%), urea
Aldehyde adhesive (10%-30%), melamine phosphate (5%-10%), hypo-aluminum orthophosphate (4%-9%), curing agent (1%).
(2) firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then sieve is put
It above to boiling water pot, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, by curing agent
It is dissolved into urea-formaldehyde glue and sticks agent and wood shavings, melamine phosphate, hypo-aluminum orthophosphate is put into low-speed agitator and be uniformly mixed, so
Mixture is taken out afterwards.The expandable polystyrene bead of curing, which is put into low-speed agitator, mixes slowly it, will be added with
The urea-formaldehyde glue and sticks agent and wood shavings mixture of curing agent are distinguished in secondary addition blender in three batches, and it is right that adhesive is first added every time
Wood shavings and flame-retardant mixture are added afterwards, so that wood shavings and fire retardant are equably sticked to EPS surface of beads.It is finally viscous by what is obtained
There is the EPS bead of wood shavings and fire retardant to be put into mold, and puts it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60
Minute, mold is taken out, room temperature is cooling, and EPS base light flame-retardant plate has just been prepared in sampling.
Several embodiments of the present invention introduced below.
Example one:
Each component content:
Expandable polystyrene (30%), wood shavings (20%), urea-formaldehyde glue and sticks agent (30%), melamine phosphate
(10%), hypo-aluminum orthophosphate (9%), curing agent (1%).
Preparation method:
Firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, sieve is then put into boiling
It above kettle, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, curing agent is dissolved
Enter in urea-formaldehyde glue and sticks agent and wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator to be uniformly mixed, then will
Mixture takes out.The expandable polystyrene bead of curing, which is put into low-speed agitator, mixes slowly it, will be added with solidification
The urea-formaldehyde glue and sticks agent and wood shavings mixture of agent are first added adhesive and then added every time respectively in three batches in secondary additions blender
Enter wood shavings and flame-retardant mixture, so that wood shavings and fire retardant are equably sticked to EPS surface of beads.Finally plane is stained with by what is obtained
Colored and fire retardant EPS bead is put into mold, and is put it into 100 DEG C -130 DEG C of baking oven and placed 55 minutes to 60 points
Clock takes out mold, and room temperature is cooling, and EPS base light flame-retardant plate has just been prepared in sampling.
Example two:
Expandable polystyrene (30%), wood shavings (30%), urea-formaldehyde glue and sticks agent (20%), melamine phosphate
(10%), hypo-aluminum orthophosphate (9%), curing agent (1%).
Preparation method:
Firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, sieve is then put into boiling
It above kettle, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, curing agent is dissolved
Enter in urea-formaldehyde glue and sticks agent and wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator to be uniformly mixed, then will
Mixture takes out.The expandable polystyrene bead of curing, which is put into low-speed agitator, mixes slowly it, will be added with solidification
The urea-formaldehyde glue and sticks agent and wood shavings mixture of agent are first added adhesive and then added every time respectively in three batches in secondary additions blender
Enter wood shavings and flame-retardant mixture, so that wood shavings and fire retardant are equably sticked to EPS surface of beads.Finally plane is stained with by what is obtained
Colored and fire retardant EPS bead is put into mold, and is put it into 100 DEG C -130 DEG C of baking oven and placed 55 minutes to 60 points
Clock takes out mold, and room temperature is cooling, and EPS base light flame-retardant plate has just been prepared in sampling.
Example three:
Expandable polystyrene (30%), wood shavings (30%), urea-formaldehyde glue and sticks agent (30%), melamine phosphate (5%),
Hypo-aluminum orthophosphate (4%), curing agent (1%).
Preparation method:
Firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, sieve is then put into boiling
It above kettle, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, curing agent is dissolved
Enter in urea-formaldehyde glue and sticks agent and wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator to be uniformly mixed, then will
Mixture takes out.The expandable polystyrene bead of curing, which is put into low-speed agitator, mixes slowly it, will be added with solidification
The urea-formaldehyde glue and sticks agent and wood shavings mixture of agent are first added adhesive and then added every time respectively in three batches in secondary additions blender
Enter wood shavings and flame-retardant mixture, so that wood shavings and fire retardant are equably sticked to EPS surface of beads.Finally plane is stained with by what is obtained
Colored and fire retardant EPS bead is put into mold, and is put it into 100 DEG C -130 DEG C of baking oven and placed 55 minutes to 60 points
Clock takes out mold, and room temperature is cooling, and EPS base light flame-retardant plate has just been prepared in sampling.
Claims (6)
- The preparation method of 1.EPS base light flame-retardant Wood plastic boards, it is characterised in that:This method comprises:(1) it stocks up according to following quality than component proportion:Expandable polystyrene 30%-60%, wood shavings 20%-60%, adhesive 10%-30%, melamine phosphate 5%- 10%, hypo-aluminum orthophosphate 4%-9% and curing agent 1%；(2) the expandable polystyrene EPS beads for weighing certain mass are put on sieve, and sieve is put into above boiling water pot, It is cured -50 seconds 40 seconds in steam, taking-up, which is placed in, is placed at room temperature for 10 hours；Curing agent is dissolved into urea-formaldehyde glue and sticks agent and is incited somebody to action Wood shavings, melamine phosphate, hypo-aluminum orthophosphate are put into low-speed agitator and are uniformly mixed, and then take out mixture；Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, will be added with the urea-formaldehyde glue and sticks agent and plane of curing agent Flower mixture is respectively in three batches in secondary additions blender, and is first added that then wood shavings are added in adhesive and fire retardant mixes every time Object, so that wood shavings and fire retardant are equably sticked to EPS surface of beads；The obtained EPS bead for being stained with wood shavings and fire retardant is put Enter in mold, and put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, take out mold, carry out room temperature into Row is cooling and samples.
- 2. method according to claim 1, which is characterized in that the wood shavings are one kind of bamboo and woods fiber wood shavings, Aspen wood shavings Or mixture.
- 3. method according to claim 1, which is characterized in that the adhesive is ureaformaldehyde tree of the solid content in 50%-60% Rouge.
- 4. method according to claim 1, which is characterized in that the compound flame retardant includes melamine phosphate and time phosphorus Sour aluminium.
- 5. method according to claim 1, which is characterized in that the curing agent is one kind or mixing of ammonium chloride and ammonium sulfate Object.
- 6. method according to claim 1, which is characterized in that the EPS is partial size 1.2-1.8mm, and one step foaming multiplying power is 70-85 times of expandable polystyrene.
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| CN201910465140.9A CN110204773A (en) | 2019-05-30 | 2019-05-30 | The preparation process of EPS base light flame-retardant Wood plastic boards |
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| CN201910465140.9A CN110204773A (en) | 2019-05-30 | 2019-05-30 | The preparation process of EPS base light flame-retardant Wood plastic boards |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005272665A (en) * | 2004-03-25 | 2005-10-06 | Sekisui Plastics Co Ltd | Expandable styrene-based resin particle, method for producing the same and foamed product |
| WO2005113661A1 (en) * | 2004-05-13 | 2005-12-01 | Ciba Specialty Chemicals Holding Inc. | Flame retardants |
| CN102504557A (en) * | 2011-10-08 | 2012-06-20 | 福建农林大学 | Low-density wood-plastic composite shaving board and manufacture method thereof |
| CN106280059A (en) * | 2015-05-21 | 2017-01-04 | 中国科学院理化技术研究所 | A kind of plant fiber foamed wall heat insulation material and preparation method thereof |
-
2019
- 2019-05-30 CN CN201910465140.9A patent/CN110204773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005272665A (en) * | 2004-03-25 | 2005-10-06 | Sekisui Plastics Co Ltd | Expandable styrene-based resin particle, method for producing the same and foamed product |
| WO2005113661A1 (en) * | 2004-05-13 | 2005-12-01 | Ciba Specialty Chemicals Holding Inc. | Flame retardants |
| CN102504557A (en) * | 2011-10-08 | 2012-06-20 | 福建农林大学 | Low-density wood-plastic composite shaving board and manufacture method thereof |
| CN106280059A (en) * | 2015-05-21 | 2017-01-04 | 中国科学院理化技术研究所 | A kind of plant fiber foamed wall heat insulation material and preparation method thereof |
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Application publication date: 20190906 |