CN101372160A - Artificial board produced from papermaking sludge and method for producing the same as well as deodorizing method - Google Patents
Artificial board produced from papermaking sludge and method for producing the same as well as deodorizing method Download PDFInfo
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- CN101372160A CN101372160A CNA2008101159081A CN200810115908A CN101372160A CN 101372160 A CN101372160 A CN 101372160A CN A2008101159081 A CNA2008101159081 A CN A2008101159081A CN 200810115908 A CN200810115908 A CN 200810115908A CN 101372160 A CN101372160 A CN 101372160A
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Abstract
The invention discloses an artificial board manufactured from paper-making mud as well as a manufacture method and a deodorization method thereof. The artificial board manufactured from paper-making mud includes at least one basic layer and reinforced layers at the two sides of the basic layer; the basic layer is the mixture of the paper-making mud and phenolic resin glue; the reinforced layers are the mixture of fiberglass cloth and a resin acceptor and the phenolic resin glue. The manufacture method for the artificial board includes: drying the paper-making mud to a absolute dry state; grinding the mud into fine particles with a water content rate of 3 to 5 percent; using a filter screen to filter the impurities of the phenolic resin glue; uniformly mixing the phenolic resin glue into the fine particles of the mud to form the material of the basic layer; drying the fiberglass cloth for three hours under the temperature of 200 DEG C to remove the olefin on the surface; printing the resin acceptor as well as the phenolic resin glue on the surface of the fiberglass cloth to form the material of the reinforced layers; arranging the material of the basic layer and the material of the reinforced layers into a die in a mutual spacing way to carry out paving for forming the blank of the artificial board; carrying out hot rolling and shaping on the blank to obtain a finished product. The artificial board manufactured from paper-making mud as well as the manufacture method and the deodorization method thereof solves the processing problem for the paper-making mud and provides a great deal of materials for the artificial board industry so as to promote the artificial board industry to be fast developed.
Description
Technical field
The present invention relates to a kind of wood-based plate and manufacture method thereof and deodorizing method, particularly a kind of wood-based plate and manufacture method and deodorizing method that utilizes paper mill sludge to make.
Background technology
Paper mill sludge is one to the byproduct that makes sewage treatment plant's headache.Because sludge of sewage treatment plants contains noxious material and heavy metal, landfill is later on polluted underground water.According to environmental administration's monitoring, 1m
3Paper mill sludge causes crops total crop failure in tens meters scopes of periphery, and underground water can't be drunk.So both waste many soils, can not fundamentally solve secondary pollution problem again.On the other hand, because the landfill yard relative shortage, domestic many paper plants mud is arbitrarily thrown aside or to abuse phenomenon without harmless treatment on the farmland very general, causes new environmental pollution, and ecological risk is increasing." ecological safety " is the important component part of national security, is the basis of maintaining a national economy social sustainable development.The incineration treatment method equipment investment is big, and the incinerator that need involve great expense also will consume a large amount of fuel, is irrational from utilization of resources angle, and burns and cause secondary pollution.How paper mill sludge is carried out scientific and reasonable improvement,, recycle renewable resource to reduce the pollution treatment gross investment to greatest extent, turn waste into wealth, make pollution treatment energy extra earning, produce positive benefit, this is that domestic and international expert dreams of, the common hot issue of paying close attention to of pollution treatment enterprise.
On the other hand, in recent years, along with the raising day by day of China's living standards of the people, China construction and decoration market and furniture manufacturing industry are more and more faster to wood-based plate growth of requirement speed.According to update statistics, the total output of the big wood-based plate kind of China 2003 four (glued board, fiberboard, particieboard, core-board) has arrived record-breaking 4,500 ten thousand m greatly
3, wherein glued board output is 1,700 ten thousand m
3, medium density fibre board (MDF) output is 1,300 ten thousand m
3, particieboard output 5,000,000 m
3, core-board output is 1,000 ten thousand m
32004 production capacities of being only medium density fibre board (MDF) just increase about 40%.Although the development of the wood-based panel industry of China is very fast, output improves constantly, and the occupancy volume per person only is 0.014m
3Compare still quite low with international consumption per head.Meanwhile, the topmost problem that fast development faced of wood-based panel industry is exactly the supply of raw material problem.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of wood-based plate, it uses paper mill sludge as raw material, and the adding glass fibre strengthens, so not only solved the handling problem of a large amount of paper mill sludges, for wood-based panel industry provides a large amount of raw materials, can promote the fast development of wood-based panel industry again.
Another object of the present invention provides a kind of method of making above-mentioned wood-based plate.
Another object of the present invention provides a kind of deodorizing method of above-mentioned wood-based plate.
For achieving the above object, the invention provides the wood-based plate that a kind of paper mill sludge is made, comprise that at least one basic unit, basic unit both sides are enhancement layer, described basic unit is the mixture of paper mill sludge and phenolic resin glue, and described enhancement layer is the mixture of glass fiber and coupling agent, phenolic resin glue.
Further, the direction of described glass fiber is all identical.
Further, the direction of described glass fiber is a random alignment.
Further, described wood-based plate is a three-decker, and the centre is a basic unit, and both sides are enhancement layer, and the thickness of wood-based plate is 10mm, long * wide be 300mm * 300mm, density is 0.85g/cm
3The length of glass fiber is 0.5～4mm, glass fiber accounts for wood-based plate gross mass 20%, impregnation resin content is 0.2g glue/1g silk, the coupling agent addition is 0～2.0%, the diameter of glass fiber is that 6 μ m, line density are that 1204tex, combustible content are 0.57%, moisture content is 0.10%, fracture strength is 0.57N/tex, and coupling agent is the KH-550 type.
The present invention also provides a kind of method of making described wood-based plate, comprises the steps:
1) paper mill sludge is dried by the fire over dry at 105 ℃;
2) paper mill sludge after will drying is worn into fine particle, carries out secondary drying at 105 ℃, and the moisture content that makes particle is 3%～5%;
3) phenolic resin glue is filtered out impurity with 60 eye mesh screens;
4) phenolic resin glue after will filtering is evenly admixed in the fine particle of described paper mill sludge, forms basic unit's raw material for standby;
5) glass fiber is cut into 0.5～4mm;
6) glass fiber that cuts is mixed with coupling agent, phenolic resin glue, form the enhancement layer raw material for standby;
7) mould of basic unit's raw material and enhancement layer raw material space being put into spreading machine is mated formation, and forms artificial blanks;
8) artificial blanks after will mating formation is sent into and is carried out hot forming in the hot press, obtains finished product.
Further, also comprise the steps: after the described step 8)
9) finished product is carried out performance test.
Further, described step 6) specifically comprises:
(1) coupling agent is added in the phenolic resin glue;
(2) the glass fiber immersion is mixed with in the phenolic resin glue of coupling agent.
Further, described step 6) specifically comprises:
(1) coupling agent is added in the ethanol;
(2) the glass fiber immersion is mixed with in the ethanol of coupling agent;
(3) the above-mentioned ethanol that has glass fiber is placed big burning at 80 ℃ of water-bath heating 1h, allow ethanol volatilize;
(4) will vapor away glass fiber remaining behind the ethanol immerses in the phenolic resin glue.
Further, the granular size of paper mill sludge is described step 2): 5～10 purposes account for 30%; 10～20 purposes account for 35%; 20～40 purposes account for 30%; The fine powder that 40 orders are above account for 5%; Described phenolic resin glue is the wet glue of solids content 50%; The phenolic resin glue addition is 13% in the described step 4), and the applying glue mode is for directly admixing; The phenolic resin glue addition is 0.2g glue/1g silk in the described step 6), and glue is pressed wet glue by solids content 100%: water=1:1 dilution back impregnation; The technological parameter of hot pressing is 120 ℃ of temperature in the described step 8), time 8min, unit pressure 1MPa.
The invention provides a kind of deodorizing method of wood-based plate of paper mill sludge manufacturing, comprise the steps:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than 1: 2 active carbon;
3) with seal of vessel;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
The present invention is by using paper mill sludge as raw material, and the adding glass fibre strengthens, and utilize active carbon to remove penetrating odors such as stink in the paper mill sludge, solved air pollution, so not only solve the handling problem of a large amount of paper mill sludges, made waste material be able to regeneration, reduced environmental pollution, also opened up raw material sources widely, can promote the fast development of wood-based panel industry for producing wood-based plate.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 1 is the structure chart of the embodiment of the invention 1 wood-based plate;
Fig. 2 is a kind of manufacturing flow chart of the artificial plate of the present invention;
Fig. 3 is the another kind of manufacturing flow chart of the artificial plate of the present invention;
Test test data and the difference of original weight and the design sketch of time weekly that Fig. 4 dispels paper mill sludge wood-based plate penetrating odor method for the embodiment of the invention 4;
Test test data and the difference of front one all weight and the design sketch of time weekly that Fig. 5 dispels paper mill sludge wood-based plate penetrating odor method for the embodiment of the invention 4.
The specific embodiment
Embodiment 1:
As shown in Figure 1, the invention provides the wood-based plate that a kind of paper mill sludge is made, wood-based plate is a three-decker, the centre is a basic unit 1, both sides are enhancement layer 2, and basic unit 1 is the mixture of paper mill sludge and phenolic resin glue, and enhancement layer 2 is the mixture of glass fiber and coupling agent, phenolic resin glue.The thickness of wood-based plate is 10mm, long * wide be 300mm * 300mm, density is 0.85g/cm
3Wherein glass fiber accounts for wood-based plate gross mass 20% (upper and lower surface each 10%), and impregnation resin content is 0.2g glue/1g silk, and glue is by solids content 100% (by dried phenolic resin glue (being active ingredient)), by wet glue: impregnation after water=1:1 dilutes.Coupling agent is the KH-550 type, i.e. 3-aminopropyl triethoxysilane (3-aminopropyltrietoxysilane), and molecular formula is NH
2(CH
2)
3Si (OCH
2CH
3)
3, concentration 99%, addition are respectively 0,0.5%, 1.0%, 1.5%, 2.0%.
The specification of glass fiber sees Table 1.
Table 1
| Single fiber diameter/μ m Single fiber diameter | Line density/tex Line density | Combustible content/% Combustible content | Moisture content/% Water content | Fracture strength/Ntex -1Rupture?intension? |
| 6 | 1204 | 0.57 | 0.10 | 0.57 |
The direction of glass fiber is a random alignment.Under the situation that a certain direction of needs strengthens, the direction of glass fiber is all identical with this direction.The length of glass fiber is 0.5mm, 1mm, 2mm, 3mm, 4mm.
The wood-based plate of the paper mill sludge manufacturing that present embodiment provides can also be made as the structure with a plurality of basic units 1, and each basic unit 1 both sides all has enhancement layer 2, passes through enhancement layer 2 spaces between the adjacent basic unit 1.And the wood-based plate of paper mill sludge manufacturing provided by the invention can also be made as other sizes according to actual conditions.
Embodiment 2:
As shown in Figure 2, the invention provides a kind of method of making described wood-based plate, comprise the steps:
1) paper mill sludge is dried by the fire over dry at 105 ℃;
It is 2%～3% situation that over dry is often referred to moisture content.
2) use the paper mill sludge after electrical grinding machine (make versus buy) will be dried to wear into fine particle, carry out secondary drying at 105 ℃, the moisture content that makes particle is 3%～5%;
Wherein 5～10 purposes account for 30%; 10～20 purposes account for 35%; 20～40 purposes account for 30%; The fine powder that 40 orders are above account for 5%.Paper mill sludge easily absorbs water, if standing time is very long, should once more fine particle be dried by the fire over dry at 105 ℃ before using, and the sealing bag of packing into uses up in one day, and the moisture content when guaranteeing use is about 3%～5%.
3) phenolic resin glue (PF) is filtered out impurity with 60 eye mesh screens;
4) phenolic resin glue after will filtering is evenly admixed in the fine particle of described paper mill sludge, forms basic unit's raw material for standby;
Phenolic resin glue is the wet glue of solids content 50%; The phenolic resin glue addition is 13% in the step 4), and the applying glue mode is for directly admixing;
5) glass fiber is cut into 0.5～4mm;
6) glass fiber that cuts is mixed with coupling agent, phenolic resin glue, form the enhancement layer raw material for standby;
Specifically comprise:
(1) coupling agent is added in the phenolic resin glue;
(2) the glass fiber immersion is mixed with in the phenolic resin glue of coupling agent.
Wherein, glass fiber accounts for wood-based plate gross mass 20% (upper and lower surface each 10%), and impregnation resin content is 0.2g glue/1g silk (glue is by solids content 100%), by wet glue: water=1:1 dilution back impregnation; PF is by solids content 100%, and the coupling agent addition is: 0～2.0%; Suppose that liquid glue has 100 grams, need to add 2.0% coupling agent that because the solids content of glue is 50%, so the coupling agent that actual needs adds is 1 gram.
7) mould of basic unit's raw material and enhancement layer raw material space the being put into spreading machine formation artificial blanks of mating formation;
8) artificial blanks after will mating formation is sent into and is carried out hot forming in the hot press, obtains finished product.Concrete technological parameter is 120 ℃ of temperature; Time 8min; Unit pressure 1MPa.
9) finished product is carried out performance test.
According to standard GB-T 17657-1999 " fiberboard and facing fiberboard physicochemical property test method " test MOR (MOR), elastic modelling quantity (MOE), internal bond strength (IB), boiling experiment back internal bond strength (IBb), 24h thickness swelling rate (TS).Wood-based plate begins test after placing 72h, and this moment, moisture content was 7%～8%.By the coupling agent addition be respectively: 0,0.5%, 1.0%, 1.5%, 2.0%; Glass fibre length is that 0.5mm, 1mm, 2mm, 3mm, 4mm test, and test data sees Table 2.
Table 2
Embodiment 3:
As shown in Figure 3, the invention provides a kind of method of making described wood-based plate, comprise the steps:
1) to 5) step identical with embodiment 2;
6) glass fiber that cuts is mixed with coupling agent, phenolic resin glue, form the enhancement layer raw material for standby;
Specifically comprise:
(1) coupling agent adding and required PF glue of impregnation and water are mixed in the ethanol of equal in quality;
(2) the glass fiber immersion is mixed with in the ethanol of coupling agent;
(3) the above-mentioned ethanol that has glass fiber is placed big burning at 80 ℃ of water-bath heating 1h, allow ethanol volatilize;
(4) will vapor away glass fiber remaining behind the ethanol immerses in the phenolic resin glue.
Wherein, glass fiber accounts for wood-based plate gross mass 20% (upper and lower surface each 10%), and impregnation resin content is 0.2g glue/1g silk (glue is by solids content 100%), by wet glue: water=1:1 dilution back impregnation; PF is by solids content 100%, and the coupling agent addition is: 0～2.0%; Suppose that liquid glue has 100 grams, need to add 2.0% coupling agent that because the solids content of glue is 50%, so the coupling agent that actual needs adds is 1 gram.
7) to 9) step identical with embodiment 2.
According to standard GB-T17657-1999 " fiberboard and facing fiberboard physicochemical property test method " test MOR (MOR), elastic modelling quantity (MOE), internal bond strength (IB), boiling experiment back internal bond strength (IBb), 24h thickness swelling rate (TS).Wood-based plate begins test after placing 72h, and this moment, moisture content was 7%～8%.By the coupling agent addition be respectively: 0,0.5%, 1.0%, 1.5%, 2.0%; Glass fibre length is that 0.5mm, 1mm, 2mm, 3mm, 4mm test, and test data sees Table 3.
Table 3
Embodiment 4:
A kind of paper mill sludge is made artificial deodorizing method, and these method concrete steps are:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than the active carbon of 1:2;
3) with seal of vessel;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
Get two paper mill sludge wood-based plate blockages, be weighed as 25.3789g (representing), 25.2027g (representing) with 2P with 1P; 2 layers of bundles of active carbon, fasten sack, 60.9042g (representing with C) weighs, can guarantee that amounts of activated carbon is enough, place volume to be about the 200ml drier active carbon and wood-based plate, the two is opened with porcelain dividing plate lattice with holes, bore dia is 1cm, the drier edge of opening uses Seal Oil to seal, and drier is placed sealed bag, can guarantee air-tightness.Other gets the same size blockage, the 25.0923g that weighs (representing) with 3P, directly place indoor, to do contrast.
The examination index is the active carbon weightening finish, and mud wood-based plate loss of weight records the speed that increases weight with loss of weight simultaneously.One week test, one secondary data tested for 18 weeks altogether.In addition, use the mode of olfactometry to come mud wood-based plate smell is simply judged.
The test data weekly and the difference of original weight the results are shown in Table 4 and Fig. 4; The difference of test data weekly and front one all weight the results are shown in Table 5 and Fig. 5.Which week all numerical tables show, as 1 the 1st week of expression.
Table 4
Table 5
From table 4 and Fig. 4 as can be known, along with the time increases, active carbon weight increases, the weight of mud wood-based plate constantly reduces, and the two was more or less the same before the 10th week, may be owing to the weather heating after the 10th week, air humidity increases reason, and active carbon weight increases the minimizing greater than mud wood-based plate weight.Place indoor mud wood-based plate weight to descend generally, but show a kind of fluctuation, illustrate that influenced by prevailing circumstances bigger, place the weightless rule of two blocks of mud wood-based plates of drier identical, and all greater than directly depositing in indoor mud wood-based plate, illustrate that active carbon works to mud wood-based plate weightlessness really, that is to say that volatile organic matter is in a large number by charcoal absorption in the wood-based plate.And the smell of mud wood-based plate, from the 3rd week of placing, stink obviously reduces, but a kind of taste that turns sour is arranged, and this is the taste that organic matter (not comprising protein) decomposes, and since the 5th week, tart flavour is also few, and the smell of mud wood-based plate reduces, and remains to for 18 weeks.
From table 5 and Fig. 5 as can be known, on weightless speed, placing the weightless speed of indoor mud wood-based plate also is undaform, and rule is more random, does not therefore draw on figure.Place interior mud wood-based plate weightlessness of drier and active carbon to increase weight and all show as, preceding 3 weeks are comparatively obvious, and the minimizing of back is comparatively steady, generally speaking all reducing, but 18 all interior never having arrive zero always.Therefore can infer that the thing that the mud wood-based plate is emitted in the time of the front is more, what put later lacks, and discharges from outside to inside because organic matter discharges, and discharges difficult more more to the inside.
In sum, the wood-based plate that adopts method for preparing to go out has solved paper mill sludge and has handled difficult problem, and make simple, cheap, guaranteed simultaneously the intensity of sheet material again, and after shaping, added the penetrating odor that the deodorizing operation has been dispeled the paper mill sludge wood-based plate, not only environmental protection but also safety.
The above-mentioned description of the wood-based plate and the manufacture method thereof of this paper mill sludge manufacturing being carried out with reference to embodiment is illustrative rather than determinate, therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (10)
1. the wood-based plate made of a paper mill sludge, it is characterized in that, comprise that at least one basic unit, basic unit both sides are enhancement layer, described basic unit is the mixture of paper mill sludge and phenolic resin glue, and described enhancement layer is the mixture of glass fiber and coupling agent, phenolic resin glue.
2. the wood-based plate that paper mill sludge according to claim 1 is made is characterized in that the direction of described glass fiber is all identical.
3. the wood-based plate that paper mill sludge according to claim 1 is made is characterized in that the direction of described glass fiber is a random alignment.
4. the wood-based plate that paper mill sludge according to claim 1 is made is characterized in that described wood-based plate is a three-decker, and centre is basic unit, and both sides are enhancement layer, and the thickness of wood-based plate is 10mm, grow * wide be 300mm * 300mm, density is 0.85g/cm
3The length of glass fiber is 0.5～4mm, glass fiber accounts for wood-based plate gross mass 20%, impregnation resin content is 0.2g glue/1g silk, the coupling agent addition is 0～2.0%, the diameter of glass fiber is that 6 μ m, line density are that 1204tex, combustible content are 0.57%, moisture content is 0.10%, fracture strength is 0.57N/tex, and coupling agent is the KH-550 type.
5. a method of making the described wood-based plate of claim 1 is characterized in that, comprises the steps:
1) paper mill sludge is dried by the fire over dry at 105 ℃;
2) paper mill sludge after will drying is worn into fine particle, carries out secondary drying at 105 ℃, and the moisture content that makes particle is 3%～5%;
3) phenolic resin glue is filtered out impurity with 60 eye mesh screens;
4) phenolic resin glue after will filtering is evenly admixed in the fine particle of described paper mill sludge, forms basic unit's raw material for standby;
5) glass fiber is cut into 0.5～4mm;
6) glass fiber that cuts is mixed with coupling agent, phenolic resin glue, form the enhancement layer raw material for standby;
7) mould of basic unit's raw material and enhancement layer raw material space being put into spreading machine is mated formation, and forms artificial blanks;
8) artificial blanks after will mating formation is sent into and is carried out hot forming in the hot press, obtains finished product.
6. the method for manufacturing wood-based plate according to claim 5 is characterized in that, also comprises the steps: after the described step 8)
9) finished product is carried out performance test.
7. the method for manufacturing wood-based plate according to claim 5 is characterized in that, described step 6) specifically comprises:
(1) coupling agent is added in the phenolic resin glue;
(2) the glass fiber immersion is mixed with in the phenolic resin glue of coupling agent.
8. the method for manufacturing wood-based plate according to claim 5 is characterized in that, described step 6) specifically comprises:
(1) coupling agent is added in the ethanol;
(2) the glass fiber immersion is mixed with in the ethanol of coupling agent;
(3) the above-mentioned ethanol that has glass fiber is placed big burning at 80 ℃ of water-bath heating 1h, allow ethanol volatilize;
(4) will vapor away glass fiber remaining behind the ethanol immerses in the phenolic resin glue.
9. the method for manufacturing wood-based plate according to claim 5 is characterized in that, described step 2) in the granular size of paper mill sludge be: 5～10 purposes account for 30%; 10～20 purposes account for 35%; 20～40 purposes account for 30%; The fine powder that 40 orders are above account for 5%; Described phenolic resin glue is the wet glue of solids content 50%; The phenolic resin glue addition is 13% in the described step 4), and the applying glue mode is for directly admixing; The phenolic resin glue addition is 0.2g glue/1g silk in the described step 6), and glue is pressed wet glue by solids content 100%: water=1:1 dilution back impregnation; The technological parameter of hot pressing is 120 ℃ of temperature in the described step 8), time 8min, unit pressure 1MPa.
10. the deodorizing method of the wood-based plate of a paper mill sludge manufacturing is characterized in that, comprises the steps:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than 1: 2 active carbon;
3) with seal of vessel;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101159081A CN101372160B (en) | 2008-06-30 | 2008-06-30 | Artificial board produced from papermaking sludge and method for producing the same as well as deodorizing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101159081A CN101372160B (en) | 2008-06-30 | 2008-06-30 | Artificial board produced from papermaking sludge and method for producing the same as well as deodorizing method |
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| Publication Number | Publication Date |
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| CN101372160A true CN101372160A (en) | 2009-02-25 |
| CN101372160B CN101372160B (en) | 2010-08-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729611A (en) * | 2016-03-07 | 2016-07-06 | 德华兔宝宝装饰新材股份有限公司 | Mg/Al-LDHs (Layered Double Hydroxides) medium density fiberboard and preparation method thereof |
| CN108706911A (en) * | 2018-04-28 | 2018-10-26 | 山东源根化学技术研发有限公司 | A method of producing Footpath brick with resin and papermaking black mud |
| CN108752686A (en) * | 2018-04-28 | 2018-11-06 | 山东源根化学技术研发有限公司 | A method of producing Footpath brick with resin and paper white sludge |
| CN109624015A (en) * | 2018-12-29 | 2019-04-16 | 上海昶法新材料有限公司 | A kind of environment-friendly type density board and preparation method thereof of papermaking waste production |
| CN112030596A (en) * | 2020-08-20 | 2020-12-04 | 锦上包装江苏有限公司 | Formula of environment-friendly paperboard regenerated by using papermaking sludge |
-
2008
- 2008-06-30 CN CN2008101159081A patent/CN101372160B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729611A (en) * | 2016-03-07 | 2016-07-06 | 德华兔宝宝装饰新材股份有限公司 | Mg/Al-LDHs (Layered Double Hydroxides) medium density fiberboard and preparation method thereof |
| CN105729611B (en) * | 2016-03-07 | 2017-11-03 | 德华兔宝宝装饰新材股份有限公司 | Magnalium nano-layered double hydroxides medium density fibre board (MDF) |
| CN108706911A (en) * | 2018-04-28 | 2018-10-26 | 山东源根化学技术研发有限公司 | A method of producing Footpath brick with resin and papermaking black mud |
| CN108752686A (en) * | 2018-04-28 | 2018-11-06 | 山东源根化学技术研发有限公司 | A method of producing Footpath brick with resin and paper white sludge |
| CN109624015A (en) * | 2018-12-29 | 2019-04-16 | 上海昶法新材料有限公司 | A kind of environment-friendly type density board and preparation method thereof of papermaking waste production |
| CN112030596A (en) * | 2020-08-20 | 2020-12-04 | 锦上包装江苏有限公司 | Formula of environment-friendly paperboard regenerated by using papermaking sludge |
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| Publication number | Publication date |
|---|---|
| CN101372160B (en) | 2010-08-25 |
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