CN106366679A - Preparation method of formaldehyde adsorbing and decomposing wood-plastic composite board - Google Patents
Preparation method of formaldehyde adsorbing and decomposing wood-plastic composite board Download PDFInfo
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- CN106366679A CN106366679A CN201610758504.9A CN201610758504A CN106366679A CN 106366679 A CN106366679 A CN 106366679A CN 201610758504 A CN201610758504 A CN 201610758504A CN 106366679 A CN106366679 A CN 106366679A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to a preparation method of a formaldehyde adsorbing and decomposing wood-plastic composite board, and belongs to the technical field of wood-plastic materials. The preparation method comprises the following steps: pulverizing rice straws, and calcining to obtain carburized powder; mixing the carburized powder with polyvinyl chloride, extruding, granulating, and soaking the obtained granules in a sulfuric acid solution; pulverizing aluminum oxide and manganese peroxide to obtain superfine powder, and preparing a suspension; soaking the acid soaked granules in the suspension, and then filtering to obtain a filter residue; and mixing the filter residue with chlorophytum comosum juice and microwave treated shaving powder, coupling agent, antioxidant, lubricant and other aids, putting the mixture in a mold, and performing hot pressing treatment to obtain the wood-plastic composite board. The wood-plastic composite board prepared by the invention has a formaldehyde adsorbing effect, can decompose adsorbed formaldehyde, and is green and non-toxic; and the wood-plastic composite board has favorable dimensional stability, corrosion resistance, long service life and wide application prospects.
Description
Technical field
The present invention relates to a kind of formaldehyde absorbing and the preparation method decomposing wood-plastic clad plate, belong to Wood-plastic material technology neck
Domain.
Background technology
Formaldehyde is a kind of common indoor pollutant.The purification method of domestic PARA FORMALDEHYDE PRILLS(91,95) respectively has weak point at present, e.g.,
tio2Catalytic oxidation must use ultraviolet light;Ozonation purification efficiency is low, and ozone easily decomposes simultaneously；Physics and chemisorbed
Method sorbent suspension inactivation and the restriction of regeneration and adsorption capacity；The regeneration of the enrichment of formaldehyde gases and microorganism in biological method purification
Problem fails to coordinate well to solve.And sekiney of Japan et al. research finds, under conditions of room temperature is unglazed, metal aoxidizes
Mno in thing2PARA FORMALDEHYDE PRILLS(91,95) has good removal effect.
Novel wood-plastic composite material arises at the historic moment, and it is using wood fibre filler, and based on some thermoplastics
Want raw material (pvc, pp, pe etc.), additional certain processing aid, through the prepared composite wood of high-temperature mixing and processing and forming
Material.Compared to wood-based plate, wood plastic composite nontoxic, environmental protection is the excellent of its maximum
Gesture；As the succedaneum of timber, wood plastic composite not only has the distinctive woodiness touch of log, and it has preferably
Mechanical performance, good stability of the dimension, resistance to water, wearability, chemical resistance are excellent, are not afraid of and damage by worms it is easy to colour, and safeguarding will
Ask low, long service life, can numerous excellent properties such as secondary operations it is easy to molding.In addition it is noted that it can also
Make full use of and reclaim the timber that timber, clout, wood flour etc. went out of use originally, increase substantially the utilization rate of natural timber, and can
Solve the refuse pollution caused by waste wood and process problem, there is conservation of nature environment, improve artificial wooden productss and add
The effect being worth.
Content of the invention
The technical problem to be solved: exceeded for the free formaldehyde release in wood-based plate, it is not only to people
Body damage, the also problem to environment, there is provided a kind of formaldehyde absorbing with decompose wood-plastic clad plate
Preparation method, the present invention calcines to obtain carbonization powder after pulverizing rice straw, extrude after carbonization powder and polrvinyl chloride mixing
Pelletize, the granule obtaining is put in sulfuric acid solution and soaks, aluminium oxide is become superfines to make suspension with manganese dioxide powder
Liquid, granule after acid soak is placed in suspension and soaks, filter to obtain filtering residue after immersion, by filtering residue with bracketplant juice and microwave
The auxiliary agents such as the wood shavings powder after reason, coupling agent, antioxidant, lubricant mix, and mixture are put into hot-pressing processing in mould, that is,
Can get wood-plastic clad plate, the wood-plastic clad plate that the present invention prepares not only has the effect of formaldehyde adsorption, and can will inhale
Attached formaldehyde is decomposed, not only green non-poisonous, and wood-plastic clad plate good stability of the dimension, corrosion-resistant, long service life,
It is with a wide range of applications.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) weigh 100～200g rice straw, pulverize after drying, cross 100～120 mesh sieves, obtain rice straw powder, by Oryza sativa L.
Stalk powder is put in Muffle furnace, is warming up to 300～400 DEG C, is incubated carbonization 10～15min, carbonization under nitrogen atmosphere protection
After be cooled to room temperature, obtain carbide and put in ball mill, after ball milling 60～70min cross 400～420 mesh sieves, obtain carbonization powder；
(2) above-mentioned carbonization powder 1:10 in mass ratio is mixed with polrvinyl chloride, be added to twin screw after stirring mixing 1～2h and squeeze
Go out in machine, extruding pelletization at a temperature of 160～180 DEG C, pelletize is obtained granule 1:10 in mass ratio and puts into mass fraction 80% sulfur
Soak in acid solution, filter to obtain filtering residue after soaking 3～5h, put in baking oven, 8～10h is dried at a temperature of 70～90 DEG C, obtains dry
Dry thing；
(3) weigh 12～15g aluminium oxide and 15～25g manganese dioxide, add pulverize in connected superfine pulverizer particle diameter be 0.8～
1.0 μm of mixed-powder, mix powder is added in 1～2l deionized water, ultrasonic disperse 10～15min obtains suspension,
Add the above-mentioned dried object of 400～500g in suspension, be standing and soak for 30～40h after stirring mixing 30～40min, mistake after immersion
Filter, obtains filtering residue and puts in baking oven, dry 6～8h at a temperature of 70～80 DEG C, and filtering residue after must being dried is standby；
(4) weigh 2～3kg wood shavings, pulverize after drying, cross 100～120 mesh sieves, obtain wood shavings powder, wood shavings powder sprays
500～800ml bracketplant juice, is uniformly mixed after sprinkling, after mixing under 400～450w power microwave treatment 15～20min,
Take out and natural air drying after process, obtain the wood shavings powder after process；
(5) count by weight, choose filtering residue, 60～70 parts of above-mentioned process after 40～50 parts of standby dryings of step (3) respectively
Particieboard afterwards, 2～4 part of 200～220 mesh calcium carbonate powder, 0.2～0.5 part of stearic acid sodium, 0.8～1.2 part of silane coupler
550,0.5～1.0 part of antioxidant 1010 of kh-, 1～3 part of liquid paraffin and 2～4 parts of o-phthalic acid dibutyl esters, stirring mixing
After put in mould, be hot-pressing processing 8～10min under the conditions of 160～180 DEG C and pressure are 3～5mpa in temperature, remove pressure
Continue hot pressing 5～7min after 2～4min, be cooled to room temperature, the demoulding after hot pressing, you can obtain wood-plastic clad plate.
The application process of the present invention: wood-plastic clad plate prepared by the present invention can replace original interior decoration wood plank
Material, installs indoors after 1～2 month, and the clearance to indoor formaldehyde is more than 93%, and tensile strength is 35～45mpa, with 90 DEG C
Temperature thermo-oxidative ageing, up to 3500～4000h, MOR conservation rate reaches more than 85%, using 15～22 years no efflorescence, open
The phenomenon such as split.
Compared with additive method, Advantageous Effects are the present invention:
(1) the good RX of the compatibility of present invention preparation has the higher compatibility with robber materialses, improves rubber
Tensile strength so as to tensile strength reaches 19.56～20.12mpa；
(2) the good softening agent raw material of the compatibility of present invention preparation obtains simple, preparation process is simple, have extensive market and
Good industrial prospect.
Specific embodiment
Weigh 100～200g rice straw first, pulverize after drying, cross 100～120 mesh sieves, obtain rice straw powder, will
Rice straw powder is put in Muffle furnace, is warming up to 300～400 DEG C, is incubated carbonization 10～15min under nitrogen atmosphere protection,
It is cooled to room temperature after carbonization, obtains carbide and put in ball mill, cross 400～420 mesh sieves after ball milling 60～70min, obtain carbonization power
End；Above-mentioned carbonization powder 1:10 in mass ratio is mixed with polrvinyl chloride, after stirring mixing 1～2h, is added to double screw extruder
In, extruding pelletization at a temperature of 160～180 DEG C, pelletize is obtained granule 1:10 in mass ratio, and to put into mass fraction 80% sulphuric acid molten
Soak in liquid, filter to obtain filtering residue after soaking 3～5h, put in baking oven, 8～10h is dried at a temperature of 70～90 DEG C, obtains drying
Thing；Weigh 12～15g aluminium oxide and 15～25g manganese dioxide, add pulverize in connected superfine pulverizer particle diameter is 0.8～1.0 μm
Mixed-powder, mix powder is added in 1～2l deionized water, ultrasonic disperse 10～15min obtains suspension, to suspended
Add the above-mentioned dried object of 400～500g in liquid, be standing and soak for 30～40h after stirring mixing 30～40min, filter after immersion, obtain
Filtering residue is put in baking oven, dry 6～8h at a temperature of 70～80 DEG C, and filtering residue after must being dried is standby；Weigh 2～3kg wood shavings, shine
Pulverize after dry, cross 100～120 mesh sieves, obtain wood shavings powder, wood shavings powder sprays 500～800ml bracketplant juice, stirs after sprinkling
Mix mix homogeneously, after mixing under 400～450w power microwave treatment 15～20min, after process take out and natural air drying, obtain place
Wood shavings powder after reason；Count by weight, choose filtering residue, the plane after 60～70 parts of above-mentioned process after 40～50 parts of dryings respectively
Card, 2～4 part of 200～220 mesh calcium carbonate powder, 0.2～0.5 part of stearic acid sodium, 0.8～1.2 part of silane coupler kh-
550th, 0.5～1.0 part of antioxidant 1010,1～3 part of liquid paraffin and 2～4 parts of o-phthalic acid dibutyl esters, put after stirring mixing
Enter in mould, be hot-pressing processing 8～10min under the conditions of 160～180 DEG C and pressure are 3～5mpa in temperature, remove pressure 2～
Continue hot pressing 5～7min after 4min, be cooled to room temperature, the demoulding after hot pressing, you can obtain wood-plastic clad plate.
Example 1
Weigh 100g rice straw first, pulverize after drying, cross 100 mesh sieves, obtain rice straw powder, rice straw powder is put
Enter in Muffle furnace, be warming up to 300 DEG C under nitrogen atmosphere protection, be incubated carbonization 10min, be cooled to room temperature after carbonization, obtain carbonization
Thing is put in ball mill, crosses 400 mesh sieves, obtain carbonization powder after ball milling 60min；By above-mentioned carbonization powder 1:10 in mass ratio with poly-
Vinyl chloride mixes, and is added in double screw extruder, extruding pelletization at a temperature of 160 DEG C, pelletize is obtained after stirring mixing 1h
Granule 1:10 in mass ratio puts in mass fraction 80% sulfuric acid solution and soaks, and filters to obtain filtering residue, put in baking oven after soaking 3h,
8h is dried at a temperature of 70 DEG C, obtains dried object；Weigh 12g aluminium oxide and 15g manganese dioxide, add in connected superfine pulverizer and pulverize
Particle diameter is 0.8 μm of mixed-powder, mix powder is added in 1l deionized water, ultrasonic disperse 10min obtains suspension, to
Add the above-mentioned dried object of 400g in suspension, be standing and soak for 30h after stirring mixing 30min, filter after immersion, obtain filtering residue and put into baking
In case, at a temperature of 70 DEG C, 6h is dried, filtering residue after must being dried, standby；Weigh 2kg wood shavings, pulverize after drying, cross 100 mesh sieves, obtain
Wood shavings powder, sprays 500ml bracketplant juice on wood shavings powder, is uniformly mixed after sprinkling, micro- under 400w power after mixing
Ripple processes 15min, takes out and natural air drying, obtain the wood shavings powder after process after process；Count by weight, choose 40 parts respectively
Particieboard after filtering residue after drying, 60 parts of above-mentioned process, 2 part of 200 mesh calcium carbonate powder, 0.2 part of stearic acid sodium, 0.8～1.2 part
550,0.5 part of antioxidant 1010 of silane coupler kh-, 1 part of liquid paraffin and 2 parts of o-phthalic acid dibutyl esters, after stirring mixing
Put in mould, hot-pressing processing 8min under the conditions of temperature is 160 DEG C and pressure is 3mpa, after removing pressure 2min, continue hot pressing
5min, is cooled to room temperature, the demoulding, you can obtain wood-plastic clad plate after hot pressing.
Wood-plastic clad plate prepared by the present invention can replace original interior decoration wood material, installs indoors after January,
Clearance to indoor formaldehyde is 94%, and tensile strength is 35mpa, with 90 DEG C of temperature thermo-oxidative ageings, up to 3500h, quiet Qu Qiang
Degree conservation rate reached 86%, using 15 years no phenomenons such as efflorescence, cracking.
Example 2
Weigh 150g rice straw first, pulverize after drying, cross 110 mesh sieves, obtain rice straw powder, rice straw powder is put
Enter in Muffle furnace, be warming up to 350 DEG C under nitrogen atmosphere protection, be incubated carbonization 13min, be cooled to room temperature after carbonization, obtain carbonization
Thing is put in ball mill, crosses 410 mesh sieves, obtain carbonization powder after ball milling 65min；By above-mentioned carbonization powder 1:10 in mass ratio with poly-
Vinyl chloride mixes, and is added in double screw extruder, extruding pelletization at a temperature of 170 DEG C, pelletize is obtained after stirring mixing 1.5h
Put in mass fraction 80% sulfuric acid solution to granule 1:10 in mass ratio and soak, filter to obtain filtering residue after soaking 4h, put into baking oven
In, 9h is dried at a temperature of 80 DEG C, obtains dried object；Weigh 13g aluminium oxide and 20g manganese dioxide, add powder in connected superfine pulverizer
Broken particle diameter is 0.9 μm of mixed-powder, mix powder is added in 1.5l deionized water, ultrasonic disperse 13min must hang
Turbid liquid, adds the above-mentioned dried object of 450g in suspension, is standing and soak for 35h, filters, obtain filter after immersion after stirring mixing 35min
Slag is put in baking oven, 7h is dried at a temperature of 75 DEG C, and filtering residue after must being dried is standby；Weigh 2.5kg wood shavings, pulverize after drying, mistake
110 mesh sieves, obtain wood shavings powder, on wood shavings powder spray 650ml bracketplant juice, be uniformly mixed after sprinkling, after mixing
Microwave treatment 17min under 430w power, takes out and natural air drying after process, obtains the wood shavings powder after process；Count by weight,
Choose filtering residue, the particieboard after 65 parts of above-mentioned process, 3 part of 210 mesh calcium carbonate powder, 0.4 part of stearic acid after 45 parts of dryings respectively
Sodium, 550,0.7 part of antioxidant 1010 of 1.0 parts of silane coupler kh-, 2 parts of liquid paraffin and 3 parts of o-phthalic acid dibutyl esters, stir
Put into after mixing mixing in mould, hot-pressing processing 9min under the conditions of temperature is 170 DEG C and pressure is 4mpa, after removing pressure 3min
Continue hot pressing 6min, be cooled to room temperature, the demoulding after hot pressing, you can obtain wood-plastic clad plate.
Wood-plastic clad plate prepared by the present invention can replace original interior decoration wood material, installs 1.5 months indoors
Afterwards, it is 95% to the clearance of indoor formaldehyde, tensile strength is 40mpa, with 90 DEG C of temperature thermo-oxidative ageings, up to 3750h, quiet song
Strength retention reached 88%, using 18 years no phenomenons such as efflorescence, cracking.
Example 3
Weigh 200g rice straw first, pulverize after drying, cross 120 mesh sieves, obtain rice straw powder, rice straw powder is put
Enter in Muffle furnace, be warming up to 400 DEG C under nitrogen atmosphere protection, be incubated carbonization 15min, be cooled to room temperature after carbonization, obtain carbonization
Thing is put in ball mill, crosses 420 mesh sieves, obtain carbonization powder after ball milling 70min；By above-mentioned carbonization powder 1:10 in mass ratio with poly-
Vinyl chloride mixes, and is added in double screw extruder, extruding pelletization at a temperature of 180 DEG C, pelletize is obtained after stirring mixing 2h
Granule 1:10 in mass ratio puts in mass fraction 80% sulfuric acid solution and soaks, and filters to obtain filtering residue, put in baking oven after soaking 5h,
10h is dried at a temperature of 90 DEG C, obtains dried object；Weigh 15g aluminium oxide and 25g manganese dioxide, add in connected superfine pulverizer and pulverize
Obtain the mixed-powder that particle diameter is 1.0 μm, mix powder be added in 2l deionized water, ultrasonic disperse 15min obtains suspension,
Add the above-mentioned dried object of 500g in suspension, be standing and soak for 40h after stirring mixing 40min, filter after immersion, obtain filtering residue and put into
In baking oven, at a temperature of 80 DEG C, 8h is dried, filtering residue after must being dried, standby；Weigh 3kg wood shavings, pulverize after drying, cross 120 mesh sieves,
Obtain wood shavings powder, wood shavings powder sprays 800ml bracketplant juice, is uniformly mixed after sprinkling, after mixing under 450w power
Microwave treatment 20min, takes out and natural air drying after process, obtains the wood shavings powder after process；Count by weight, choose 50 respectively
Filtering residue, the particieboard after 70 parts of above-mentioned process, 4 part of 220 mesh calcium carbonate powder, 0.5 part of stearic acid sodium, 1.2 parts of silicon after part being dried
550,1.0 parts of antioxidant 1010s of alkane coupling agent kh-, 3 parts of liquid paraffin and 4 parts of o-phthalic acid dibutyl esters, put after stirring mixing
Enter in mould, hot-pressing processing 10min under the conditions of temperature is 180 DEG C and pressure is 5mpa, after removing pressure 4min, continue hot pressing
7min, is cooled to room temperature, the demoulding, you can obtain wood-plastic clad plate after hot pressing.
Wood-plastic clad plate prepared by the present invention can replace original interior decoration wood material, installs indoors after 2 months,
Clearance to indoor formaldehyde is 96%, and tensile strength is 45mpa, with 90 DEG C of temperature thermo-oxidative ageings, up to 4000h, quiet Qu Qiang
Degree conservation rate reached 89%, using 22 years no phenomenons such as efflorescence, cracking.
Claims (1)
1. a kind of formaldehyde absorbing and the preparation method of decomposition wood-plastic clad plate are it is characterised in that concrete preparation process is:
(1) weigh 100～200g rice straw, pulverize after drying, cross 100～120 mesh sieves, obtain rice straw powder, by Oryza sativa L.
Stalk powder is put in Muffle furnace, is warming up to 300～400 DEG C, is incubated carbonization 10～15min, carbonization under nitrogen atmosphere protection
After be cooled to room temperature, obtain carbide and put in ball mill, after ball milling 60～70min cross 400～420 mesh sieves, obtain carbonization powder；
Above-mentioned carbonization powder 1:10 in mass ratio is mixed with polrvinyl chloride, after stirring mixing 1～2h, is added to twin-screw extrusion
In machine, extruding pelletization at a temperature of 160～180 DEG C, pelletize is obtained granule 1:10 in mass ratio and puts into mass fraction 80% sulphuric acid
Soak in solution, filter to obtain filtering residue after soaking 3～5h, put in baking oven, 8～10h is dried at a temperature of 70～90 DEG C, obtains drying
Thing；
(2) weigh 12～15g aluminium oxide and 15～25g manganese dioxide, add pulverize in connected superfine pulverizer particle diameter be 0.8～
1.0 μm of mixed-powder, mix powder is added in 1～2l deionized water, ultrasonic disperse 10～15min obtains suspension,
Add the above-mentioned dried object of 400～500g in suspension, be standing and soak for 30～40h after stirring mixing 30～40min, mistake after immersion
Filter, obtains filtering residue and puts in baking oven, dry 6～8h at a temperature of 70～80 DEG C, and filtering residue after must being dried is standby；
(3) weigh 2～3kg wood shavings, pulverize after drying, cross 100～120 mesh sieves, obtain wood shavings powder, wood shavings powder sprays
500～800ml bracketplant juice, is uniformly mixed after sprinkling, after mixing under 400～450w power microwave treatment 15～20min,
Take out and natural air drying after process, obtain the wood shavings powder after process；
(4) count by weight, choose filtering residue, 60～70 parts of above-mentioned process after 40～50 parts of standby dryings of step (3) respectively
Particieboard afterwards, 2～4 part of 200～220 mesh calcium carbonate powder, 0.2～0.5 part of stearic acid sodium, 0.8～1.2 part of silane coupler
550,0.5～1.0 part of antioxidant 1010 of kh-, 1～3 part of liquid paraffin and 2～4 parts of o-phthalic acid dibutyl esters, stirring mixing
After put in mould, be hot-pressing processing 8～10min under the conditions of 160～180 DEG C and pressure are 3～5mpa in temperature, remove pressure
Continue hot pressing 5～7min after 2～4min, be cooled to room temperature, the demoulding after hot pressing, you can obtain wood-plastic clad plate.
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| CN107349745A (en) * | 2017-06-29 | 2017-11-17 | 阜南县腾博工艺品有限公司 | A kind of composite plate goes formaldehyde treated method |
| CN107349745B (en) * | 2017-06-29 | 2020-04-10 | 阜南县腾博工艺品有限公司 | Composite board formaldehyde removal treatment method |
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