CN105128116A - Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof - Google Patents
Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof Download PDFInfo
- Publication number
- CN105128116A CN105128116A CN201510414287.7A CN201510414287A CN105128116A CN 105128116 A CN105128116 A CN 105128116A CN 201510414287 A CN201510414287 A CN 201510414287A CN 105128116 A CN105128116 A CN 105128116A
- Authority
- CN
- China
- Prior art keywords
- parts
- composite fibre
- quality
- wood
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a formaldehyde-free-grade high-quality and high-density fiberboard. The formaldehyde-free-grade high-quality and high-density fiberboard is characterized by being prepared from, by weight, 42-45 parts of crop straw, an appropriate amount of sodium hydroxide with the concentration of 2%, 2-2.5 parts of a silane coupling agent kh450, 66-70 parts of ethyl alcohol with the concentration of 95%, 30-32 parts of timber leftover materials, 4-6 parts of diatom ooze, 3-4 parts of nanometer tourmaline powder, 5-6 parts of waterborne polyurethane adhesives, 1.5-2 parts of solid paraffin, 2-3 parts of soybean protein glue, 1-2 parts of polysorbate 80, 2-3 parts of urea and an appropriate amount of water. The technology is obtained by conducting innovation on the basis of an existing technology, the production cost can be reduced, the production efficiency can be improved, and the quality stability of the fiberboard can be improved. By means of waste materials such as straw of crops and wheat, environment pollution can be reduced, and the high added value of the product can be increased, for example, anion release and the adsorption effect; and the high-strength, high-quality and formaldehyde-free environment-friendly fiberboard is prepared.
Description
Technical field
The present invention relates to wood materials deep process technology field, particularly a kind of without aldehyde level high-quality high density fiberboard and preparation method thereof.
Background technology
In recent years, the development of China middle and higher density fiberboard industry is very fast, hardboard originally progressively replace by medium and high density fibre panel.MDF enterprise is very large to the dependence of wood raw material, and wood raw material cost accounts for about 45% of production cost, the wood raw material production having badly influenced fiberboard in short supply.With regard to the requirement that medium and high density fibre panel is produced, be more than 10 years, the regeneration period of bamboo is also at 3-5, and the regeneration period of agricultural crop straw is 1 year or less than 1 year, from the utilization ratio of resource, the stalk of crops was the most favourable.China is large agricultural country, have abundant agricultural straw resource, but at present the utilization rate of China's stalk resource is only 33%, all the other most of stalks are fallen as castoff burning or only as fuel, not only cause the waste of natural resources, and weighting ring environment pollution.Adopt the cheap agronomic crop fibre strong with recyclability to replace wood raw material, become a direction of middle and higher density fiberboard development gradually.But the herbaceous plant fiber taking crops as representative is then short and thin, limits the mechanical strength of turf fibre plate to a certain extent.The content of herbaceous plant stem stalk organic solvent extract is obviously lower than wood raw material, but main component is wax, accompany by a small amount of higher fatty acids, higher alcohol etc., add that grass cane, epidermal leaf cells silicidize degree are very high, wax coat and the dioxide-containing silica on stalk surface are high, be unfavorable for the infiltration of adhesive, result in the gummed of traditional Lauxite to crushed straw aggregate bad.When this just requires to utilize the herbaceous plant fibers such as agricultural crop straw to manufacture high density fiberboard, the traditional adhesive existed in existing technique must be solved and glue together bad, poor water resistance, intensity difference defect.
It is formaldehyde series glue three kinds of Typical Representatives that phenolic resins, Lauxite and melamine resin adehsive stick agent, uses the most distinct issues of three-aldehyde glue to be free formaldehyde release.Three-aldehyde glue series wood-based plate constantly can discharge free formaldehyde, serious harm health in 3-15 before production and products thereof uses.Both at home and abroad the demand of the wood-based panel products such as no-formaldehyde density board is grown to even greater heights.Find in production practices, Aqueous Polyurethane Adhesives etc. do not arise at the historic moment containing the adhesive of formaldehyde, and occupation rate of market is more and more higher, but because price is higher, utilize it will inevitably bring the increase of the production cost of density fiber board as adhesive, but a part of composition can be saved under the prerequisite adopting the raw material such as agricultural crop straw, wood leftover material, so both can not cause the increase of cost, also the product of safety and environmental protection in producing, is worth commercially promoting.
Summary of the invention
The object of this invention is to provide a kind of without aldehyde level high-quality high density fiberboard.First soaking with sodium hydroxide agricultural crop straw is utilized, the wax coat on stalk top layer can be reduced, make the stalk fibre that content of ashes is low, use silane coupler process after being mixed with wood-fibred by stalk fibre again, further improve amalgamation, the uniformity of composite fibre, the fiber like this after process and Aqueous Polyurethane Adhesives, waterproofing agent can be combined closely, not easily layering, steady quality is homogeneous, and intensity is high, and zero Form aldehyde release.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of without aldehyde level high-quality high density fiberboard, be made up of the raw material of following weight portion: ethanol 66-70, wood leftover material 30-32 that the Sodium hydroxide q. s that agricultural crop straw 42-45, concentration are 2%, silane coupler kh4502-2.5, concentration are 95%, diatom ooze 4-6, nano-tourmaline powder 3-4, Aqueous Polyurethane Adhesives 5-6, solid paraffin 1.5-2, soybean protein glue 2-3, Tween 80 1-2, urea 2-3, water are appropriate;
Of the present invention a kind of without aldehyde level high-quality high density fiberboard, be made up of following concrete steps:
(1) putting into baking oven after being cleaned by agricultural crop straw, to be dried to water content be 20%-30%, cold go after be cut into the segment of 3-4 centimetre, then the concentration adding 3 times amount is the NaOH of 2%, filter after stirring 2-3 hour with the speed of 60 revs/min, get filter residue and be washed to neutrality, obtain crop branch fiber;
(2) wood leftover material is sent in wood chipper be cut into irregular spile, under 155-165 DEG C of condition, with saturated vapor (pressure is 0.75MPa), boiling is carried out to wood chip, send in defibrator after wood chip is softening, at the same temperature, under the mixing speed effect of 1200-1400 rev/min, wear into wood-fibred, the crop branch fiber obtained with step (1) is mixed to get composite fibre;
(3) diatom ooze crushed after being dried is crossed 200 mesh sieves then to mix with nano-tourmaline powder, adding silane coupler kh450 ball milling, to add concentration after 40 minutes be make suspension in the ethanol of 95%, at room temperature stir 30 minutes, then composite fibre is soaked wherein, pull out after 20-30 minute, put in an oven after drying, dry 30 minutes under the condition of 85-95 DEG C, take out the composite fibre obtaining surface modification after it cools naturally;
(4) first mix after urea melting with solid paraffin, adding the Tween 80 that is dissolved in 3 times of water gagings and all the other residual components after cooling, to make mixed slurry stand-by; The composite fibre of surface modification step (3) obtained adds the mixed slurry of half amount after mixing agitator is by fabric thrashing, stir, then the material after mixing thoroughly is sent in spray mixer, continue to spray into second half mixed slurry, obtain the composite fibre before hot pressing;
(5) composite fibre before hot pressing is mated formation equably in the slab meeting technological requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain preformed slab, again preformed slab is sent into hot press and carry out that hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting pressure is 40kg/cm
2, the dwell time is 3-4 minute) namely obtain product of the present invention.
The invention has the beneficial effects as follows: first the present invention makes stalk fibre with alkali treatment agricultural crop straw, wood leftover material is made wood-fibred, then cooperatively interact with diatom ooze, nano-tourmaline powder and silane coupler and surface treatment is carried out to composite fibre, the internal stress on the surface of fiber can be eliminated, thus improve the adhesion strength of composite fibre and add health care, energy of adsorption additional function; The present invention after soybean protein glue is mixed with urea again with the blended process slurries of making such as Aqueous Polyurethane Adhesives, a part is blended with composite fibre, a part is sprayed on composite fibre surface, such treatment process can make process slurry well penetrate between fiber and fiber, waterproof moisture-proof effect is remarkable, prevent fiberboard cracking, warpage, increase the service life.
Present invention process is innovated on the basis of existing technique, production cost can not only be reduced, enhance productivity, and fiberboard quality stability can be improved, utilize the waste materials such as crops wheat straw straw, can environmental pollution be reduced and improve the high added value of product, such as anion releasing and suction-operated, prepare the environment protecting fiber board that high strength high-quality is formaldehydeless.
Specific embodiments
Below by instantiation, the present invention is described in detail.
A kind of without aldehyde level high-quality high density fiberboard, be made up of the raw material of following weight portion (kilogram): the ethanol 66 that the Sodium hydroxide q. s that agricultural crop straw 42, concentration are 2%, silane coupler kh4502, concentration are 95%, wood leftover material 30, diatom ooze 4, nano-tourmaline powder 3, Aqueous Polyurethane Adhesives 5, solid paraffin 1.5, soybean protein glue 2, Tween 80 1, urea 2, water are appropriate;
Of the present invention a kind of without aldehyde level high-quality high density fiberboard, be made up of following concrete steps:
(1) putting into baking oven after being cleaned by agricultural crop straw, to be dried to water content be 20%-30%, cold go after be cut into the segment of 3-4 centimetre, then the concentration adding 3 times amount is the NaOH of 2%, filter after stirring 2 hours with the speed of 60 revs/min, get filter residue and be washed to neutrality, obtain crop branch fiber;
(2) wood leftover material is sent in wood chipper be cut into irregular spile, under 155-165 DEG C of condition, with saturated vapor (pressure is 0.75MPa), boiling is carried out to wood chip, send in defibrator after wood chip is softening, at the same temperature, under the mixing speed effect of 1400 revs/min, wear into wood-fibred, the crop branch fiber obtained with step (1) is mixed to get composite fibre;
(3) diatom ooze crushed after being dried is crossed 200 mesh sieves then to mix with nano-tourmaline powder, adding silane coupler kh450 ball milling, to add concentration after 40 minutes be make suspension in the ethanol of 95%, at room temperature stir 30 minutes, then composite fibre is soaked wherein, pull out after 30 minutes, put in an oven after drying, dry 30 minutes under the condition of 85-95 DEG C, take out the composite fibre obtaining surface modification after it cools naturally;
(4) first mix after urea melting with solid paraffin, adding the Tween 80 that is dissolved in 3 times of water gagings and all the other residual components after cooling, to make mixed slurry stand-by; The composite fibre of surface modification step (3) obtained adds the mixed slurry of half amount after mixing agitator is by fabric thrashing, stir, then the material after mixing thoroughly is sent in spray mixer, continue to spray into second half mixed slurry, obtain the composite fibre before hot pressing;
(5) composite fibre before hot pressing is mated formation equably in the slab meeting technological requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain preformed slab, again preformed slab is sent into hot press and carry out that hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting pressure is 40kg/cm
2, the dwell time is 3 minutes) namely obtain product of the present invention.
Thickness of the present invention is 12mm, the product after hot pressing cools at normal temperatures, saw and cut, deposit 2 days after, after testing, the performance test results of product of the present invention meets: density is 0.94g/cm
3, MOR is 36.5MPa, and internal bond strength is 0.885MPa, and elastic modelling quantity is 3390MPa, and thickness swelling rate is 10.8%, and burst size of methanal reaches E0 level environmental protection standard.
Claims (2)
1. one kind without aldehyde level high-quality high density fiberboard, it is characterized in that, be made up of the raw material of following weight portion: ethanol 66-70, wood leftover material 30-32 that the Sodium hydroxide q. s that agricultural crop straw 42-45, concentration are 2%, silane coupler kh4502-2.5, concentration are 95%, diatom ooze 4-6, nano-tourmaline powder 3-4, Aqueous Polyurethane Adhesives 5-6, solid paraffin 1.5-2, soybean protein glue 2-3, Tween 80 1-2, urea 2-3, water are appropriate.
2. a kind of without aldehyde level high-quality high density fiberboard according to claim 1, it is characterized in that, be made up of following concrete steps:
(1) putting into baking oven after being cleaned by agricultural crop straw, to be dried to water content be 20%-30%, cold go after be cut into the segment of 3-4 centimetre, then the concentration adding 3 times amount is the NaOH of 2%, filter after stirring 2-3 hour with the speed of 60 revs/min, get filter residue and be washed to neutrality, obtain crop branch fiber;
(2) wood leftover material is sent in wood chipper be cut into irregular spile, under 155-165 DEG C of condition, with saturated vapor (pressure is 0.75MPa), boiling is carried out to wood chip, send in defibrator after wood chip is softening, at the same temperature, under the mixing speed effect of 1200-1400 rev/min, wear into wood-fibred, the crop branch fiber obtained with step (1) is mixed to get composite fibre;
(3) diatom ooze crushed after being dried is crossed 200 mesh sieves then to mix with nano-tourmaline powder, adding silane coupler kh450 ball milling, to add concentration after 40 minutes be make suspension in the ethanol of 95%, at room temperature stir 30 minutes, then composite fibre is soaked wherein, pull out after 20-30 minute, put in an oven after drying, dry 30 minutes under the condition of 85-95 DEG C, take out the composite fibre obtaining surface modification after it cools naturally;
(4) first mix after urea melting with solid paraffin, adding the Tween 80 that is dissolved in 3 times of water gagings and all the other residual components after cooling, to make mixed slurry stand-by; The composite fibre of surface modification step (3) obtained adds the mixed slurry of half amount after mixing agitator is by fabric thrashing, stir, then the material after mixing thoroughly is sent in spray mixer, continue to spray into second half mixed slurry, obtain the composite fibre before hot pressing;
(5) composite fibre before hot pressing is mated formation equably in the slab meeting technological requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain preformed slab, again preformed slab is sent into hot press and carry out that hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting pressure is 40kg/cm
2, the dwell time is 3-4 minute) namely obtain product of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414287.7A CN105128116A (en) | 2015-07-15 | 2015-07-15 | Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414287.7A CN105128116A (en) | 2015-07-15 | 2015-07-15 | Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105128116A true CN105128116A (en) | 2015-12-09 |
Family
ID=54713854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510414287.7A Pending CN105128116A (en) | 2015-07-15 | 2015-07-15 | Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105128116A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426495A (en) * | 2016-11-14 | 2017-02-22 | 北华大学 | Manufacture of diatomite and conducting material composite antistatic environment-friendly agricultural and forestry residue fiberboard |
| CN107443534A (en) * | 2017-08-04 | 2017-12-08 | 广州市康诺装饰材料有限公司 | A kind of high-density plate and preparation method thereof |
| CN107498680A (en) * | 2017-06-16 | 2017-12-22 | 河南安朝板材科技有限公司 | Green rice husk sheet production method |
| CN107498683A (en) * | 2017-06-16 | 2017-12-22 | 河南安朝板材科技有限公司 | Green rice husk, straw stalk sheet production method |
| CN108118563A (en) * | 2017-11-17 | 2018-06-05 | 南宁科天水性科技有限责任公司 | A kind of formaldehydeless Mould Resistant MDF of compound adhesive and its manufacturing process |
| CN109535756A (en) * | 2018-09-21 | 2019-03-29 | 上海华山家具有限公司 | A kind of environment protection process technique of formaldehydeless fiberboard and preparation method thereof and furniture |
| CN111516089A (en) * | 2020-04-23 | 2020-08-11 | 芜湖霖森新材料有限公司 | Plate and preparation method thereof |
| CN111777400A (en) * | 2020-07-20 | 2020-10-16 | 上海苏云木业有限公司 | Negative ion plant fiber formaldehyde-free waterproof and fireproof plate and preparation method thereof |
| CN112721346A (en) * | 2020-11-27 | 2021-04-30 | 浙江鼎栎家居有限公司 | Negative oxygen ion bottom plate, preparation method thereof and application thereof in wood floor |
| CN113150573A (en) * | 2021-05-11 | 2021-07-23 | 佳诺威集团股份有限公司 | High-density fiberboard with low formaldehyde content |
| CN113183275A (en) * | 2021-05-11 | 2021-07-30 | 佳诺威集团股份有限公司 | High-density fiberboard with antibacterial function and manufacturing process thereof |
| CN114163957A (en) * | 2019-04-08 | 2022-03-11 | 浙江云峰莫干山地板有限公司 | Soybean formaldehyde-free glue |
| CN114393661A (en) * | 2022-01-20 | 2022-04-26 | 辽宁量弘轩商贸有限公司 | Manufacturing process of environment-friendly negative ion waste bamboo wood-silica composite fiberboard |
| CN115716290A (en) * | 2022-11-28 | 2023-02-28 | 扬州大晟药用玻璃有限公司 | Composite fiber board and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747644A (en) * | 2008-12-16 | 2010-06-23 | 金发科技股份有限公司 | Plant powder modified thermoplastic wood-plastic composite and preparation method and application |
| US20130108857A1 (en) * | 2010-07-06 | 2013-05-02 | Bei Jing New Building Material(Group) Co., Ltd | Bamboo Oriented Strand Board and Method for Manufacturing the Same |
| CN104446133A (en) * | 2014-11-18 | 2015-03-25 | 北京环球新能科技开发有限公司 | Environmentally-friendly material containing diatom ooze, preparation method of material and application of material to preparation of floors |
| CN104479385A (en) * | 2014-11-18 | 2015-04-01 | 江苏大学 | Preparation method of reinforced straw fiber composite material |
| CN104530851A (en) * | 2014-12-17 | 2015-04-22 | 谭树隆 | Multifunctional surface treating agent and use method thereof |
| CN104761818A (en) * | 2015-04-25 | 2015-07-08 | 桂林理工大学 | Method for preparing polypropylene-based wood-plastic composite material by using straw |
-
2015
- 2015-07-15 CN CN201510414287.7A patent/CN105128116A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747644A (en) * | 2008-12-16 | 2010-06-23 | 金发科技股份有限公司 | Plant powder modified thermoplastic wood-plastic composite and preparation method and application |
| US20130108857A1 (en) * | 2010-07-06 | 2013-05-02 | Bei Jing New Building Material(Group) Co., Ltd | Bamboo Oriented Strand Board and Method for Manufacturing the Same |
| CN104446133A (en) * | 2014-11-18 | 2015-03-25 | 北京环球新能科技开发有限公司 | Environmentally-friendly material containing diatom ooze, preparation method of material and application of material to preparation of floors |
| CN104479385A (en) * | 2014-11-18 | 2015-04-01 | 江苏大学 | Preparation method of reinforced straw fiber composite material |
| CN104530851A (en) * | 2014-12-17 | 2015-04-22 | 谭树隆 | Multifunctional surface treating agent and use method thereof |
| CN104761818A (en) * | 2015-04-25 | 2015-07-08 | 桂林理工大学 | Method for preparing polypropylene-based wood-plastic composite material by using straw |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426495A (en) * | 2016-11-14 | 2017-02-22 | 北华大学 | Manufacture of diatomite and conducting material composite antistatic environment-friendly agricultural and forestry residue fiberboard |
| CN106426495B (en) * | 2016-11-14 | 2018-07-31 | 北华大学 | Diatomite conductive material composite anti-static environmental protection forest and agricultural biomass fiberboard manufactures |
| CN107498680A (en) * | 2017-06-16 | 2017-12-22 | 河南安朝板材科技有限公司 | Green rice husk sheet production method |
| CN107498683A (en) * | 2017-06-16 | 2017-12-22 | 河南安朝板材科技有限公司 | Green rice husk, straw stalk sheet production method |
| CN107443534A (en) * | 2017-08-04 | 2017-12-08 | 广州市康诺装饰材料有限公司 | A kind of high-density plate and preparation method thereof |
| CN108118563A (en) * | 2017-11-17 | 2018-06-05 | 南宁科天水性科技有限责任公司 | A kind of formaldehydeless Mould Resistant MDF of compound adhesive and its manufacturing process |
| CN109535756A (en) * | 2018-09-21 | 2019-03-29 | 上海华山家具有限公司 | A kind of environment protection process technique of formaldehydeless fiberboard and preparation method thereof and furniture |
| CN114163957A (en) * | 2019-04-08 | 2022-03-11 | 浙江云峰莫干山地板有限公司 | Soybean formaldehyde-free glue |
| CN111516089A (en) * | 2020-04-23 | 2020-08-11 | 芜湖霖森新材料有限公司 | Plate and preparation method thereof |
| CN111777400A (en) * | 2020-07-20 | 2020-10-16 | 上海苏云木业有限公司 | Negative ion plant fiber formaldehyde-free waterproof and fireproof plate and preparation method thereof |
| CN112721346A (en) * | 2020-11-27 | 2021-04-30 | 浙江鼎栎家居有限公司 | Negative oxygen ion bottom plate, preparation method thereof and application thereof in wood floor |
| CN113150573A (en) * | 2021-05-11 | 2021-07-23 | 佳诺威集团股份有限公司 | High-density fiberboard with low formaldehyde content |
| CN113183275A (en) * | 2021-05-11 | 2021-07-30 | 佳诺威集团股份有限公司 | High-density fiberboard with antibacterial function and manufacturing process thereof |
| CN114393661A (en) * | 2022-01-20 | 2022-04-26 | 辽宁量弘轩商贸有限公司 | Manufacturing process of environment-friendly negative ion waste bamboo wood-silica composite fiberboard |
| CN115716290A (en) * | 2022-11-28 | 2023-02-28 | 扬州大晟药用玻璃有限公司 | Composite fiber board and preparation method thereof |
| CN115716290B (en) * | 2022-11-28 | 2024-01-23 | 扬州维工科技有限公司 | Composite fiber board and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105128116A (en) | Formaldehyde-free-grade high-quality and high-density fiberboard and preparation method thereof | |
| CN105082308A (en) | Straw added fireproof high-density fiberboard and preparation method thereof | |
| CN104999539A (en) | Waterproof and suncare straw wood composite high density fiberboard and preparation method thereof | |
| CN105128117A (en) | Sun-protection high-density fiberboard based on ultraviolet shielding agent and preparation method of sun-protection high-density fiberboard | |
| CN105171884A (en) | Ecological sound-absorbing, sound-insulating and high-density fiberboard and preparation method thereof | |
| CN104999540A (en) | Shock-resistant and antistatic high density fiberboard and preparation method thereof | |
| CN101058207B (en) | Maize stalk and/or wheat stalk composite board and its manufacturing method | |
| CN105150347A (en) | High-density composite fibers toughened with palm fibers and preparation method of high-density composite fibers | |
| CN105176119A (en) | High density fiber plate with characteristics of uniform texture, low carbon and environmental protection, and preparation method thereof | |
| CN109500976B (en) | Production process of high-strength low-formaldehyde shaving board | |
| CN105150343A (en) | High-density fiberboard with absorption performance enhanced by adding modified paper sludge and preparation method thereof | |
| CN101659074B (en) | Method for manufacturing weed wood and straw compounding medium density fiberboard with laminated structure | |
| CN105128118A (en) | Sound absorption and heat preservation high-density fiberboard capable of being used as house partition plate and preparation method of sound absorption and heat preservation high-density fiberboard | |
| CN107779165B (en) | Manufacturing process of formaldehyde-free fiberboard | |
| CN104227819A (en) | Preparation method for reed fiber particle board | |
| CN105171885A (en) | Waterproof and moisture-proof enhanced type high-density fiberboard and preparation method thereof | |
| CN104059598A (en) | Method for manufacturing soybean protein modified adhesive formaldehyde-free medium-density fiberboard | |
| CN105128120A (en) | High-density composite fiberboard based on surface processed hybrid fiber and preparation method of high-density composite fiberboard | |
| WO2020258682A1 (en) | Formaldehyde-free medium and high-density board supporting deep overcoating and manufacturing method thereof | |
| CN105583935B (en) | A kind of method that environment protecting fiber board is prepared based on chitosan blend lignin | |
| CN105150344A (en) | Anti-crack anti-fracture straw substitute type high-density fiberboard and preparation method thereof | |
| CN105128121A (en) | Multi-purpose fireproof high-density composite fiberboard and preparation method thereof | |
| CN105082297A (en) | Anti-abrasion and anti-static high-density environment-friendly fiber board and preparation method thereof | |
| CN105111981A (en) | Application of bamboo powder | |
| CN105150345A (en) | Novel acid-alkali-corrosion-resistant high-density composite fiberboard and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |