CN105176119A - High density fiber plate with characteristics of uniform texture, low carbon and environmental protection, and preparation method thereof - Google Patents
High density fiber plate with characteristics of uniform texture, low carbon and environmental protection, and preparation method thereof Download PDFInfo
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- CN105176119A CN105176119A CN201510414360.0A CN201510414360A CN105176119A CN 105176119 A CN105176119 A CN 105176119A CN 201510414360 A CN201510414360 A CN 201510414360A CN 105176119 A CN105176119 A CN 105176119A
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Abstract
The present invention discloses a high density fiber plate with characteristics of uniform texture, low carbon and environmental protection, wherein the high density fiber plate is prepared from the following raw materials by weight: 42-45 parts of crop straws, 10-12 parts of waste fabric, a proper amount of sodium hydroxide with a concentration of 2%, 30-32 parts of wood leftover material, 2-2.5 parts of a silane coupling agent kh450, 3-5 parts of polypropylene fibers, 66-70 parts of ethanol with concentration of 95%, 7-8 parts of an aqueous polyurethane adhesive, 1.5-2 parts of emulsified paraffin, a proper amount of water, 5-7 parts of coconut shell active carbon, and 2-3 parts of a soybean protein glue. According to the present invention, during the hot pressing molding engineering, the added polypropylene fibers melt so as to be well fused with the fibers, such that the crack resistance of the product is improved, the prepared product has the uniform and compact texture, and is easily subjected to nail planing, cutting, fixing and bonding; and the coconut shell activate carbon is contained so as to provide a certain adsorption effect, and the product is the formaldehyde-free level, and has a certain adsorption property when being adopted as the decoration material so as to improve the indoor environment.
Description
Technical field
The present invention relates to wood materials deep process technology field, particularly a kind of high density fiberboard and preparation method thereof of homogeneous low-carbon environment-friendly.
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.Medium density fiberboard enterprise is very large to the dependency 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 utilising efficiency of resource, the stalk of farm crop was the most favourable.China is large agricultural country, have abundant agricultural straw resource, but at present the utilization ratio 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 farm crop as representative is then short and thin, limits the physical strength of turf fibre plate to a certain extent.The content of herbaceous plant stem stalk organic solvent extractum is obviously lower than wood raw material, but main component is wax, accompany by a small amount of higher fatty acid, higher alcohols etc., add that grass cane, epidermal leaf cells silicidize degree are very high, wax layer and the dioxide-containing silica on stalk surface are high, be unfavorable for the infiltration of sizing agent, result in the gummed of traditional urea-formaldehyde resin 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 sizing agent 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 resol, urea-formaldehyde resin 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 HUMAN 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 practice, Aqueous Polyurethane Adhesives etc. do not arise at the historic moment containing the sizing agent of formaldehyde, and share 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 tackiness agent, 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 present invention is directed in currently available products and there is water tolerance deficiency, the shortcoming that quality is uneven, high density fiberboard of a kind of homogeneous low-carbon environment-friendly and preparation method thereof is provided.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A high density fiberboard for homogeneous low-carbon environment-friendly, is made up of the raw material of following weight part: ethanol 66-70, Aqueous Polyurethane Adhesives 7-8 that the Sodium hydroxide q. s that agricultural crop straw 42-45, waste textiles 10-12, concentration are 2%, wood leftover material 30-32, silane coupling agent kh4502-2.5, polypropylene fibre 3-5, concentration are 95%, emulsified olefin 1.5-2, water are appropriate, cocoanut active charcoal 5-7, soybean glue 2-3;
The high density fiberboard of a kind of homogeneous low-carbon environment-friendly of the present invention, 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 sodium hydroxide 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 saturation steam (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 stirring velocity effect of 1200-1400 rev/min, wear into xylon, the crop branch fiber obtained with step (1) is mixed to get blend fiber;
(3) after waste textiles being dried and polypropylene fibre is blended is ground into 100 order mixed powders, cocoanut active charcoal is ground into 200 order powder, then all add that to be dissolved in concentration be silane coupling agent kh450 in the ethanol of 95%, stir under normal temperature and form suspension, then blend fiber is continued to be immersed in suspension, pull out after 20-30 minute, put in an oven after drying, dry under the condition of 85-95 DEG C again, take out the blend fiber obtaining surface modification after its naturally cooling;
(4) first Aqueous Polyurethane Adhesives and emulsified olefin are stirred, then add all the other remaining components, make mixed slurry after stirring 10-15 minute with the speed of 300 revs/min stand-by; The blend fiber 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 blend fiber before hot pressing;
(5) blend fiber before hot pressing is mated formation equably in the slab meeting processing requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain premolding slab, again premolding slab feeding thermocompressor is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and forming pressure is 40kg/cm2, and the dwell time is 3-4 minute) and namely obtain product of the present invention.
The invention has the beneficial effects as follows: the present invention adopts a large amount of agricultural crop straws and wood leftover material to substitute timber, a large amount of timber resources can be saved like this, by certain treatment process, extract fiber, polypropylene fibre, cocoanut active charcoal etc. being processed by the composite rear fiber to mixing of certain mode with silane coupling agent of novelty, can the intensity of fortifying fibre and adsorptivity; Again the mixing such as Aqueous Polyurethane Adhesives, emulsified olefin is carried out applying glue to the blend fiber after process at twice, blend glue stuff is evenly distributed between fiber and fiber and fiber surface, the product waterproof moisture-proof effect made after such process is remarkable, prevent fiberboard cracking, warpage, increase the service life.
The present invention is in hot-forming engineering, and the polypropylene fibre melting of interpolation and fiber better merge, and improves the splitting resistance of product, makes the product made homogeneous fine and closely woven, and is easy to nail plane, cutting, fixing and bonding; Include cocoanut active charcoal simultaneously, have certain adsorption effect, this product is without aldehyde level, has certain adsorptivity as decorations material, can improve indoor environment.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A high density fiberboard for homogeneous low-carbon environment-friendly, is made up of the raw material of following weight part (kilogram): the ethanol 66 that the Sodium hydroxide q. s that agricultural crop straw 42, waste textiles 10, concentration are 2%, wood leftover material 30, silane coupling agent kh4502, polypropylene fibre 3, concentration are 95%, Aqueous Polyurethane Adhesives 7, emulsified olefin 1.5, water are appropriate, cocoanut active charcoal 5, soybean glue 2;
The high density fiberboard of a kind of homogeneous low-carbon environment-friendly of the present invention, 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 sodium hydroxide 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 saturation steam (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 stirring velocity effect of 1200 revs/min, wear into xylon, the crop branch fiber obtained with step (1) is mixed to get blend fiber;
(3) after waste textiles being dried and polypropylene fibre is blended is ground into 100 order mixed powders, cocoanut active charcoal is ground into 200 order powder, then all add that to be dissolved in concentration be silane coupling agent kh450 in the ethanol of 95%, stir under normal temperature and form suspension, then blend fiber is continued to be immersed in suspension, pull out after 20 minutes, put in an oven after drying, dry under the condition of 85-95 DEG C again, take out the blend fiber obtaining surface modification after its naturally cooling;
(4) first Aqueous Polyurethane Adhesives and emulsified olefin are stirred, then add all the other remaining components, make mixed slurry after stirring 10 minutes with the speed of 300 revs/min stand-by; The blend fiber 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 blend fiber before hot pressing;
(5) blend fiber before hot pressing is mated formation equably in the slab meeting processing requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain premolding slab, again premolding slab feeding thermocompressor is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and forming pressure is 40kg/cm2, and the dwell time is 4 minutes) and 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 0.909g/cm
3, MOR is 36.95MPa, and internal bond strength is 0.875MPa, and Young's modulus is 3410MPa, and thickness swelling rate is 11.29%, and burst size of methanal reaches E0 level environmental protection standard.
Claims (2)
1. the high density fiberboard of a homogeneous low-carbon environment-friendly, it is characterized in that, be made up of the raw material of following weight part: ethanol 66-70, Aqueous Polyurethane Adhesives 7-8 that the Sodium hydroxide q. s that agricultural crop straw 42-45, waste textiles 10-12, concentration are 2%, wood leftover material 30-32, silane coupling agent kh4502-2.5, polypropylene fibre 3-5, concentration are 95%, emulsified olefin 1.5-2, water are appropriate, cocoanut active charcoal 5-7, soybean glue 2-3.
2. the high density fiberboard of a kind of homogeneous low-carbon environment-friendly according to claim 1, 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 sodium hydroxide 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 saturation steam (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 stirring velocity effect of 1200-1400 rev/min, wear into xylon, the crop branch fiber obtained with step (1) is mixed to get blend fiber;
(3) after waste textiles being dried and polypropylene fibre is blended is ground into 100 order mixed powders, cocoanut active charcoal is ground into 200 order powder, then all add that to be dissolved in concentration be silane coupling agent kh450 in the ethanol of 95%, stir under normal temperature and form suspension, then blend fiber is continued to be immersed in suspension, pull out after 20-30 minute, put in an oven after drying, dry under the condition of 85-95 DEG C again, take out the blend fiber obtaining surface modification after its naturally cooling;
(4) first Aqueous Polyurethane Adhesives and emulsified olefin are stirred, then add all the other remaining components, make mixed slurry after stirring 10-15 minute with the speed of 300 revs/min stand-by; The blend fiber 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 blend fiber before hot pressing;
(5) blend fiber before hot pressing is mated formation equably in the slab meeting processing requirement, control the thickness of fiberboard, first precompressed on vulcanizing press, then through continuous rolling precompressed, obtain premolding slab, again premolding slab feeding thermocompressor is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and forming pressure is 40kg/cm2, and the dwell time is 3-4 minute) and namely obtain product of the present invention.
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| CN201510414360.0A CN105176119A (en) | 2015-07-15 | 2015-07-15 | High density fiber plate with characteristics of uniform texture, low carbon and environmental protection, and preparation method thereof |
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| CN201510414360.0A CN105176119A (en) | 2015-07-15 | 2015-07-15 | High density fiber plate with characteristics of uniform texture, low carbon and environmental protection, and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163380A (en) * | 2017-05-22 | 2017-09-15 | 句容市兴武包装有限公司 | A kind of preparation method of the strap for the bamboo fibre that adulterates |
| CN107486921A (en) * | 2016-06-13 | 2017-12-19 | 中国林业科学研究院木材工业研究所 | A kind of fiberboard with purifying formaldehyde function |
| 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 |
| CN109294263A (en) * | 2018-09-26 | 2019-02-01 | 安徽继宏环保科技有限公司 | A kind of production method of straw fiber board |
| CN109468891A (en) * | 2018-11-22 | 2019-03-15 | 山东如意科技集团有限公司 | A kind of waste fabric fiberboard and its manufacturing method |
| CN110154198A (en) * | 2019-05-13 | 2019-08-23 | 阜阳大可新材料股份有限公司 | A kind of production method of Ultrathin high density fiberboard |
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| 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 |
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| CN104556934A (en) * | 2014-12-19 | 2015-04-29 | 安徽中龙建材科技有限公司 | Aerated concrete block capable of adsorbing toxic and harmful gases and preparation method of aerated concrete block |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486921A (en) * | 2016-06-13 | 2017-12-19 | 中国林业科学研究院木材工业研究所 | A kind of fiberboard with purifying formaldehyde function |
| CN107163380A (en) * | 2017-05-22 | 2017-09-15 | 句容市兴武包装有限公司 | A kind of preparation method of the strap for the bamboo fibre that adulterates |
| 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 |
| CN109294263A (en) * | 2018-09-26 | 2019-02-01 | 安徽继宏环保科技有限公司 | A kind of production method of straw fiber board |
| CN109468891A (en) * | 2018-11-22 | 2019-03-15 | 山东如意科技集团有限公司 | A kind of waste fabric fiberboard and its manufacturing method |
| CN110154198A (en) * | 2019-05-13 | 2019-08-23 | 阜阳大可新材料股份有限公司 | A kind of production method of Ultrathin high density fiberboard |
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Application publication date: 20151223 |