CN102806591B - Manufacturing process for ultra light fiber board - Google Patents
Manufacturing process for ultra light fiber board Download PDFInfo
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- CN102806591B CN102806591B CN201210262582.1A CN201210262582A CN102806591B CN 102806591 B CN102806591 B CN 102806591B CN 201210262582 A CN201210262582 A CN 201210262582A CN 102806591 B CN102806591 B CN 102806591B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000011094 fiberboard Substances 0.000 title claims abstract description 19
- 239000002023 wood Substances 0.000 claims abstract description 23
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 230000001070 adhesive effect Effects 0.000 claims abstract description 22
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000009835 boiling Methods 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 15
- -1 melamine modified urea Chemical class 0.000 claims abstract description 15
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 14
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 13
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 abstract description 35
- 238000005520 cutting process Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 15
- 238000001035 drying Methods 0.000 abstract description 5
- 238000012216 screening Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract 2
- 239000004819 Drying adhesive Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 46
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 33
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 23
- 239000004202 carbamide Substances 0.000 description 23
- 235000019256 formaldehyde Nutrition 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000004576 sand Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 241000499489 Castor canadensis Species 0.000 description 5
- 235000011779 Menyanthes trifoliata Nutrition 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- UFMBFIIJKCBBHN-MEKJRKEKSA-N myelin peptide amide-16 Chemical compound C([C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(N)=O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CO)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](C)NC(=O)[C@H](C)NC(C)=O)C1=CC=C(O)C=C1 UFMBFIIJKCBBHN-MEKJRKEKSA-N 0.000 description 2
- 108010074682 myelin peptide amide-16 Proteins 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000011609 Pinus massoniana Nutrition 0.000 description 1
- 241000018650 Pinus massoniana Species 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
Abstract
The invention discloses a manufacturing process for an ultra light fiber board. The method comprises the following steps of: peeling wood, cutting to obtain sheets, screening, washing, boiling, separating fibers, mixing and applying adhesive, drying and sorting, paving and forming, prepressing, performing hot-pressing, turning the board and cooling, sanding, inspecting and classifying, and packaging and putting in storage, wherein in the boiling step, the boiling material level is 1.6 to 3m, and the boiling temperature is 165 to 175 DEG C; in the step of separating the fibers, the wood sheets enter a mill through a ribbon spiral conveyor, molten waxes are fed into the mill simultaneously, the application amount is 5.0 to 7.0kg/m<3>, and the gap of an abrasive wheel is 0 to 4mm; and in the step of mixing and applying the adhesive, melamine modified urea resin adhesive is applied, the adhesive application amount is 195 to 210kg/m<3>, the adding amount of a curing agent is 1 to 2.5 percent based on the mass of absolute drying adhesive, and the curing agent is a mixture of ammonium chloride and a (commercially available) HA101 cross-linking agent in a mass ratio of 3:1. Moreover, a method for preparing the melamine modified urea resin adhesive used by manufacturing the ultra light fiber board is correspondingly provided for matching the manufacturing process.
Description
Technical field
The invention belongs to beaver board and manufacture field, particularly a kind of manufacturing process of ultra light fiber board.
Background technology
China's medium density fibre board (MDF) (MDF) industry developed, because of its medium density (0.7 ~ 0.8g/cm early eighties from last century
3), superior performance, is widely used in stereo set, indoor and outdoor decoration etc., in wood-based panel industry, occupy critical role.Medium density fibre board (MDF) is since invention, so that it is fine and close, uniform quality, excellent machining property are widely used in the fields such as furniture, indoor decorating, building, packaging, musical instrument, vehicle and shipbuilding, along with density board produces the development of equipment and production technology, its scope of application is also more and more extensive.Substitute stainless steel or plastics after carrying out two-sided facing and surrounding edge sealing with density fiber board not only greatly to reduce its production cost, increase the service life, manufacture process is simple simultaneously, reusable edible, to economize on resources and protection of the environment has positive meaning.The production of medium density fibre board (MDF) (MDF) is raw material with wood fibre usually, and in south, be primary raw material with masson pine, a certain amount of weedtree of arranging in pairs or groups is produced.Current China's Forest Resources is poor, the raising of society to timber demand in addition, timber and woodwork disparities between supply and demand outstanding day by day.For alleviating timber and the woodwork imbalance between supply and demand of long-standing problem national economy, fast-growing and high-yield timber forest is built on a large scale by country, and meanwhile, the wood material needed for wood-based panel industry also turns to artificial fast-growing woods and intermediate cutting path woods by industrial wood waste gradually.Show according to interrelated data, Some Domestic wood-based plate manufacturing enterprise starts to utilize the fast-growing woods such as fast growth poplar as main material production wood-based plate, wherein also comprises for the manufacture of medium density fibre board (MDF).Since entering the nineties, medium density fibre board (MDF) (MDF) industrial production makes significant progress, and the development of new technology, new technology also promotes the development and application of MDF new product; Particularly in recent years, develop floor high-density plate successively and there is the MDF sheet material of the functions such as fire-retardant, water-fast, mildew-resistant, but from entirety, on domestic market, (density is at 0.7g/cm with 70 types for beaver board
3left and right) be main, (density is at 0.8g/cm also part 80 type
3left and right) and 80 types more than high-density plate, and 60 types (density is at 0.6g/cm
3left and right) and the following low density fiberboard of 60 types still belong to blank.
Low density fiberboard or Ultralight beaver board (UL-MDF) are also the one of beaver board, take string as raw material, through chipping, fiber separation, plate blank molding (admix resin glue and additive is mated formation), under heat, a kind of sheet material that cellulose and hemicellulose and lignin plasticizing are formed is made.Due to artificial fast-growing woods and the general density of intermediate cutting small dimension wood on the low side, the density of sheet material can be reduced in order to manufacture fiberboard.For the artificial fast-growing woods of rational exploitation and utilization and intermediate cutting small dimension wood, be necessary to study Ultralight beaver board.The present invention can the artificial fast-growing woods of rational exploitation and utilization and intermediate cutting small dimension wood, reduces the cost of MDF, (density is at 0.6g/cm to fill up domestic market 60 type
3left and right) blank of following low density fiberboard, expanded the application of density fiber board, what also solve environmental pollution and resource recycles problem.
Summary of the invention
Technical problem: the manufacturing process that the object of the present invention is to provide a kind of ultra light fiber board, in addition, for coordinating this manufacturing process, the also corresponding manufacture method that the making cyanurotriamide modified urea resin glue that this ultra light fiber board uses is provided.
Technical scheme: a kind of manufacturing process of ultra light fiber board, comprise the steps: timber peeling, chip, screen, wash, boiling, fiber separation, glue compounding and applying, dried, classified, shaping, the precompressed of mating formation, hot pressing, turnover panel cooling, sanding, inspection grade, packaging is put in storage
In described boiling step, boiling material level 1.6 ~ 3m, boiling temperature 165-175 DEG C;
In described fiber separation step, wood chip enters grinding machine by belt type spiral, adds melt paraffin, paraffin applied amount 5.0 ~ 7.0kg/m in grinding machine simultaneously
3, abrasive disk space is within the scope of 0 ~ 4mm;
In described glue compounding and applying step, the pipeline of fiber ejection applies cyanurotriamide modified urea resin adhesive, and resin added is 195 ~ 210kg/m
3, curing agent addition is 1 ~ 2.5% (mass percent relative to over dry adhesive).
Over dry adhesive refers to and is evaporated by moisture at 120 DEG C in baking oven by adhesive, residual solid mixture.
Described curing agent is the mixture of ammonium chloride and HA101 crosslinking agent, ammonium chloride: HA101 crosslinking agent is 3:1 (mass percent).
HA101 crosslinking agent is the commercially available prod of EverFirst Wisefund (Beijing) Technology Co., Ltd., and outward appearance is colourless or weak yellow liquid; PH value: 8 ~ 9; Density: about 1.1g/ml.
Preferably, in described heat-press step, controlled well and pressed off sum velocity, hot pressing temperature is arranged on 220-160 DEG C, plays pressure section 0 framework distance at 20-60mm, adopts five sections of humidity provinces, hot pressing pressure at 0-4MPa, hot pressing factor 6-7.0s/mm, maximum pressure 1.3-1.8MPa.
The preparation method of the cyanurotriamide modified urea resin adhesive applied in described glue compounding and applying step is as follows:
(1), add account for cyanurotriamide modified urea resin adhesive quality than be the formaldehyde of 55% in reactor, with mass concentration 40% sodium hydroxide solution adjust pH to 8.8-9.2;
(2), drop into melamine and urea, be warming up to 88-90 DEG C gradually, reaction 20min;
(3), control the mol ratio of formaldehyde and urea at 1.9-2.2, at 85-90 DEG C, react 80-100min, adjust pH to 5.0-6.0 with the formic acid of mass percent concentration 20%, react to viscosity 18-19s;
(4), add urea and melamine, the mol ratio of formaldehyde and urea and melamine sum, at 1.30-1.45, reacts 25-35min at 78-88 DEG C;
(5), add urea, make the mol ratio of formaldehyde and urea and melamine sum at 0.8-0.95, at 70-80 DEG C of insulation 20-30min, being cooled to 40 DEG C gradually, is 7.8-8.2 with the sodium hydroxide solution adjust pH of mass concentration 40%;
In above-mentioned steps, the total amount of melamine accounts for the 1.0-2.5% of whole liquid resin quality, and the mol ratio of formaldehyde and urea and melamine sum is at 0.8-0.95; Urea drops in three batches, and melamine divides two batches of inputs, and first melamine accounts for the 65-70% of melamine total amount, and second batch melamine accounts for the 30-35% of melamine total amount;
(6), holding vessel is injected, stand-by.
The viscosity of adhesive adopts GB to be coated with 4 agar diffusion methods and detects: first by the position of painting 4 glasss adjustment level, with left index finger by outlet of staying, be the cyanurotriamide modified urea resin adhesive of 25 DEG C again toward implantation temperature in cup, the liquid glass bar of high cup mouth is struck off, while unclamping left index finger, the stopwatch of the right hand is pressed timing, when cyanurotriamide modified urea resin adhesive has flowed from painting 4 glasss, press stopwatch again, the reading of record stopwatch, repeat twice, get its mean value, this numerical value is exactly the viscosity of adhesive.
Beneficial effect: the method produces extremely-low density fiberboard, and manufacture method is simple, easy to operate, with low cost.Change in size, bending, aging etc. is in use there is not by the change of surrounding environment, in addition the application of density fiber board has been expanded in this invention, what solve environmental pollution and resource recycles problem simultaneously, compared with common density board, this method is produced the Ultralight density fiber board tool obtained and is had the following advantages: 1, wood raw material unit consumption reduces 0.2t/m
3; 2, improve comprehensive utilization ratio and the added value of timber resources, widen MDF raw material sources; 3, expand the range of application of MDF, meet the demand of people, alleviate the disparities between supply and demand of timber and woodwork.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further described, do not exceeding under the spirit and scope of the present invention, can make adjustment of more filling a prescription to the present invention.
Embodiment 1
1, cyanurotriamide modified urea resin production of adhesive
Preparation process is as follows:
(1), add account for cyanurotriamide modified urea resin adhesive quality than be the formaldehyde of 55% in reactor, with mass percent concentration 40% sodium hydroxide solution adjust pH to 8.8-9.2;
(2), drop into first melamine and first urea, be warming up to 88-90 DEG C gradually, reaction 20min.
(3), control the mol ratio of formaldehyde and urea at 1.9-2.2, at 85-90 DEG C, react 80min, adjust pH to 5.0-6.0 with the formic acid of mass percent concentration 20%, react to viscosity 18-19s;
(4), add second batch urea and second batch melamine, the mol ratio of formaldehyde and urea and melamine sum is 1.30-1.45, at 78-88 DEG C, react 25-35min;
(5) the 3rd batch of urea, is added, make the mol ratio of formaldehyde and urea and melamine sum at 0.8-0.95, at 70-80 DEG C of insulation 20-30min, be cooled to 40 DEG C gradually, regulate reacting liquid pH value to be 7.8-8.2 with the sodium hydroxide solution of mass concentration 40%;
The amount of melamine accounts for 1.0% of whole liquid resin weight, and the mol ratio of formaldehyde and urea and melamine summation is at 0.8-0.95; Urea divides 3 batches of inputs, and melamine divides 2 batches of inputs, and first melamine accounts for the 65-70% of melamine total amount, and second batch melamine accounts for the 30-35% of melamine total amount.
2, mask-making technology process: after adhesive completes, by producing principle and the technological process of common Midst density sheet material, after timber (pine: the weedtree=9:1) peeling of different proportion, be whittled into long 15-20mm, 15-20mm, the thick wood chip for 3-4mm, through Screening Treatment, ensure wood plate size requirement, then through washing, the impurity such as removing silt, ensure the clean of wood chip; Soften wood chip by boiling, boiling temperature is about 165-170 DEG C, and material level is at 2.0m; Wood chip enters grinding machine by belt type spiral, and in grinding machine, add melt paraffin, paraffin applied amount is about 5-7kg/m simultaneously
3, abrasive disk space is within the scope of 0-4mm; The pipeline of fiber ejection applies cyanurotriamide modified urea resin, and resin added is 195-210kg/m
3curing agent is the mixture of ammonium chloride and HA101 crosslinking agent, ammonium chloride: HA101 crosslinking agent is 3:1 (mass percent), addition is 2.0%, HA101 crosslinking agent is the commercially available prod of EverFirst Wisefund (Beijing) Technology Co., Ltd., mats formation shaping after the drying of drying system; Adjust density of mating formation, ensure slab density 520-550kg/m
3; Suitably reduced the distance 10-20mm of pressure section 0 framework in heat pressing process, reduce a district and play pressure temperature 2-5 degree, hot pressing temperature is at 220-160 DEG C, and press speeds control is at 400-700mm/s; Go out the sheet material of press through turnover panel cooling sanding process after modified 36 hours, the 4 road sanding sand amounts of cutting are allocated as follows: the first sand amount of cutting accounts for 55-60%, the second sand amount of cutting accounts for 20-25%, the 3rd road sand amount of cutting accounts for 10-15%, the 4th road sand amount of cutting accounts for 5-10%; Base material sorting warehouse-in after sanding.
Obtain Ultralight E1 sheet material through above step to detect by GB/T 11718-2009 standard-required, result is as follows:
| Performance indications | The ultralight scutum of 15mmULE1A | Ultralight scutum European standard |
| Density kg/m 3 | 550 | 500-550 |
| Most high density kg/m 3 | 850-920 | ≥850 |
| Surface bonding strength MPa | 0.99 | |
| Plate moisture content % | 7.05 | 5-8 |
| Internal bond strength MPa | 0.71 | ≥0.45 |
| MOR MPa | 16 | 16 |
| Thickness swelling rate % | 8.37 | ≤13 |
| Burst size of methanal mg/100g | 7.9 | ≤8 |
| Flatness (thickness of slab standard deviation) | 0.012-0.015 |
Embodiment 2
1, cyanurotriamide modified urea resin production of adhesive
Preparation process is as follows:
(1), add formaldehyde in reactor, add mass percent concentration 40% sodium hydroxide solution and adjust pH to 8.8-9.2;
(2), drop into first melamine and first urea, be warming up to 88-90 DEG C gradually, reaction 20min.
(3), mol ratio controls at 1.9-2.2, reacts at 85-90 DEG C, adds formic acid and adjusts pH to 5.0-6.0, react to viscosity 18-19s;
(4), add second batch urea and second batch melamine, the mol ratio of formaldehyde and urea and melamine summation, at 1.30-1.45, reacts 25-35min at 78-88 DEG C;
(5), add the 3rd batch of urea, make the mol ratio of formaldehyde and urea and melamine summation at 0.8-0.95, at 70-80 DEG C of insulation 20-30min, be cooled to 40 DEG C gradually, hydro-oxidation sodium solution regulates reacting liquid pH value to be 7.8-8.2;
The amount of melamine accounts for 2.5% of whole liquid resin quality, and the mol ratio of formaldehyde and urea and melamine summation is at 0.8-0.95; Urea divides 3 batches of inputs, and melamine divides 2 batches of inputs, and first melamine accounts for the 65-70% of melamine total amount, and second batch melamine accounts for the 30-35% of melamine total amount.
2, mask-making technology process: after adhesive completes, by producing principle and the technological process of common Midst density sheet material, after timber (pine: the weedtree=8:2) peeling of different proportion, be whittled into long 15-20mm, 15-20mm, the thick wood chip for 3-4mm, through Screening Treatment, ensure wood plate size requirement, then through washing, the impurity such as removing silt, ensure the clean of wood chip; Soften wood chip by boiling, boiling temperature is about 165-170 DEG C, and material level is at 2.0m; Wood chip enters grinding machine by belt type spiral, and in grinding machine, add melt paraffin, paraffin applied amount is about 6kg/m simultaneously
3, abrasive disk space is at 3mm; The pipeline of fiber ejection applies cyanurotriamide modified urea resin, and resin added is 200kg/m
3the mixture of ammonium chloride and HA101 crosslinking agent, ammonium chloride: HA101 crosslinking agent is 3:1 (mass percent), and addition is 1.5%, HA101 crosslinking agent is the commercially available prod of EverFirst Wisefund (Beijing) Technology Co., Ltd., mats formation shaping after the drying of drying system; Adjust density of mating formation, ensure slab density 520-540kg/m
3; Suitably reduced the distance 10-20mm of pressure section 0 framework in heat pressing process, reduce a district and play pressure temperature 2-5 degree, hot pressing temperature is at 220-160 DEG C, and press speeds control is at 400-700mm/s; Go out the sheet material of press through turnover panel cooling sanding process after modified 36 hours, the 4 road sanding sand amounts of cutting are allocated as follows: the first sand amount of cutting accounts for 55-60%, the second sand amount of cutting accounts for 20-25%, the 3rd road sand amount of cutting accounts for 10-15%, the 4th road sand amount of cutting accounts for 5-10%; Base material sorting warehouse-in after sanding.
Obtain Ultralight E1 sheet material through above step to detect by GB/T 11718-2009 standard-required, result is as follows:
| Performance indications | The ultralight scutum of 12mmULE1A | Ultralight scutum European standard |
| Density kg/m 3 | 548 | 500-550 |
| Most high density kg/m 3 | 850-900 | ≥850 |
| Surface bonding strength MPa | 0.91 | |
| Plate moisture content % | 6.61 | 5-8 |
| Internal bond strength MPa | 0.61 | ≥0.45 |
| MOR MPa | 16 | 16 |
| Thickness swelling rate % | 10.15 | ≤13 |
| Burst size of methanal mg/100g | 7.56 | ≤8 |
| Flatness (thickness of slab standard deviation) | 0.012-0.015 |
Claims (2)
1. the manufacturing process of a ultra light fiber board, comprise the steps: timber peeling, chip, screen, wash, boiling, fiber separation, glue compounding and applying, dried, classified, shaping, the precompressed of mating formation, hot pressing, turnover panel cooling, sanding, inspection grade, packaging is put in storage, it is characterized in that:
In described boiling step, boiling material level 1.6 ~ 3m, boiling temperature 165 ~ 175 DEG C;
In described fiber separation step, wood chip enters grinding machine by belt type spiral, adds melt paraffin, applied amount 5.0 ~ 7.0kg/m in grinding machine simultaneously
3;
In described glue compounding and applying step, the resin added of cyanurotriamide modified urea resin adhesive is 195 ~ 210kg/m
3, the addition of curing agent is 1 ~ 2.5% relative to the mass percent of over dry adhesive;
In described heat-press step, hot pressing temperature 220 ~ 160 DEG C, plays pressure section 0 framework distance at 20 ~ 60mm, hot pressing pressure at 0 ~ 4MPa, the hot pressing factor 6 ~ 7.0s/mm.
2. the manufacturing process of ultra light fiber board according to claim 1, it is characterized in that: described curing agent is the mixture of ammonium chloride and HA101 crosslinking agent, the mass ratio of ammonium chloride and HA101 crosslinking agent is 3:1, described HA101 crosslinking agent is the commercially available prod of EverFirst Wisefund (Beijing) Technology Co., Ltd., outward appearance is colourless or weak yellow liquid, pH value: 8 ~ 9; Density: about 1.1 g/ml.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262582.1A CN102806591B (en) | 2012-07-27 | 2012-07-27 | Manufacturing process for ultra light fiber board |
| CN201410244467.0A CN104031221B (en) | 2012-07-27 | 2012-07-27 | A kind of manufacture method of cyanurotriamide modified urea resin glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262582.1A CN102806591B (en) | 2012-07-27 | 2012-07-27 | Manufacturing process for ultra light fiber board |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410244467.0A Division CN104031221B (en) | 2012-07-27 | 2012-07-27 | A kind of manufacture method of cyanurotriamide modified urea resin glue |
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| Publication Number | Publication Date |
|---|---|
| CN102806591A CN102806591A (en) | 2012-12-05 |
| CN102806591B true CN102806591B (en) | 2015-04-15 |
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| CN201210262582.1A Active CN102806591B (en) | 2012-07-27 | 2012-07-27 | Manufacturing process for ultra light fiber board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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