CN105128120A - High-density composite fiberboard based on surface processed hybrid fiber and preparation method of high-density composite fiberboard - Google Patents
High-density composite fiberboard based on surface processed hybrid fiber and preparation method of high-density composite fiberboard Download PDFInfo
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- CN105128120A CN105128120A CN201510414388.4A CN201510414388A CN105128120A CN 105128120 A CN105128120 A CN 105128120A CN 201510414388 A CN201510414388 A CN 201510414388A CN 105128120 A CN105128120 A CN 105128120A
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Abstract
The invention discloses a high-density composite fiberboard based on surface processed hybrid fiber. The high-density composite 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, 60-70 parts of acetic acid with the concentration of 2%, 7-8 parts of waterborne polyurethane adhesives, 1.5-2 parts of emulsified paraffin, an appropriate amount of water, 3-4 parts of lignin and 2-3 parts of polyvinyl alcohol. Glue application is conducted on the surface processed hybrid fiber twice, glue is evenly distributed between pieces of fiber and on the surface of the fiber, the product processed in this way is remarkable in waterproof and damp-proof effect, the fiberboard is prevented from being cracked and bent, and the service life is prolonged. The high-density composite fiberboard can be used as base materials of wood composite floors, door plates, partition plates, package materials, materials used for decoration, and the like.
Description
Technical field
The present invention relates to wood materials deep process technology field, particularly a kind of high density composite fiberboard based on surface treatment composite fibre 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 high density composite fiberboard based on surface treatment composite fibre and preparation method thereof.The present invention just stalk fibre uses acetic acid pretreatment after mixing with wood-fibred, again by the compositional liquor reprocessing that lignin, silane coupler etc. are made, the pH value on rice straw fiber surface can be reduced so significantly, be conducive to adhesive and the good glue interface of processbearing astrocyte, thus improve the performance of straw fiber board.
In order to realize object of the present invention, the present invention is by following scheme implementation:
Based on a high density composite fiberboard for surface treatment composite fibre, be made up of the raw material of following weight portion: agricultural crop straw 42-45, concentration are Sodium hydroxide q. s, silane coupler kh4502-2.5, concentration be 95% ethanol 66-70, wood leftover material 30-32, concentration be 2% acetic acid 60-70, Aqueous Polyurethane Adhesives 7-8, emulsified wax 1.5-2, water appropriate, lignin 3-4, the polyvinyl alcohol 2-3 of 2%;
A kind of high density composite fiberboard based on surface treatment composite fibre 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 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) composite fibre being immersed in concentration is in the acetic acid of 2%, pulls out after 15-20 minute, dries under the condition of 85-95 DEG C; Polyvinyl alcohol is dissolved in the hot water of 2 times amount, add lignin, silane coupler kh450, joining concentration after stirring is in the ethanol of 95%, stir under normal temperature and form suspension, then the composite fibre that acetic acid soaked 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 composite fibre obtaining surface modification after it cools naturally;
(4) first Aqueous Polyurethane Adhesives and emulsified wax are stirred, then add all the other residual components, make mixed slurry after stirring 10-15 minute with the speed of 200 revs/min 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 feeding hot press is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting 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, can save a large amount of timber resources like this, by certain treatment process, extract fiber; The present invention passes through modification, with acetic acid, pretreatment is carried out to composite fibre, then by the suspension reprocessing that lignin, silane coupler etc. are made, such way can reduce the pH value on rice straw fiber surface so significantly, be conducive to adhesive and the good glue interface of processbearing astrocyte, thus improve the performance of straw fiber board.
Composite fibre after surface treatment is carried out double sizing by the present invention, is evenly distributed between fiber and fiber and fiber surface, and the product waterproof moisture-proof effect made after process is like this remarkable, prevents fiberboard cracking, warpage, increases the service life.The present invention can be used as the base material, door-plate, dividing plate, packaging material, decorations material etc. of wooden composite floor.
Specific embodiments
Below by instantiation, the present invention is described in detail.
Based on a high density composite fiberboard for surface treatment composite fibre, 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, concentration are acetic acid 60, Aqueous Polyurethane Adhesives 7, emulsified wax 1.5, water appropriate, lignin 3, the polyvinyl alcohol 2 of 2%;
A kind of high density composite fiberboard based on surface treatment composite fibre 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 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 1200 revs/min, wear into wood-fibred, the crop branch fiber obtained with step (1) is mixed to get composite fibre;
(3) composite fibre being immersed in concentration is in the acetic acid of 2%, pulls out after 15 minutes, dries under the condition of 85-95 DEG C; Polyvinyl alcohol is dissolved in the hot water of 2 times amount, add lignin, silane coupler kh450, joining concentration after stirring is in the ethanol of 95%, stir under normal temperature and form suspension, then the composite fibre that acetic acid soaked 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 composite fibre obtaining surface modification after it cools naturally;
(4) first Aqueous Polyurethane Adhesives and emulsified wax are stirred, then add all the other residual components, make mixed slurry after stirring 10 minutes with the speed of 200 revs/min 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 feeding hot press is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting 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 0.87g/cm
3, MOR is 37.15MPa, and internal bond strength is 0.881MPa, and elastic modelling quantity is 3380MPa, and thickness swelling rate is 10.28%, and burst size of methanal reaches E0 level environmental protection standard.
Claims (2)
1. the high density composite fiberboard based on surface treatment composite fibre, it is characterized in that, be made up of the raw material of following weight portion: agricultural crop straw 42-45, concentration are Sodium hydroxide q. s, silane coupler kh4502-2.5, concentration be 95% ethanol 66-70, wood leftover material 30-32, concentration be 2% acetic acid 60-70, Aqueous Polyurethane Adhesives 7-8, emulsified wax 1.5-2, water appropriate, lignin 3-4, the polyvinyl alcohol 2-3 of 2%.
2. a kind of high density composite fiberboard based on surface treatment composite fibre 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 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) composite fibre being immersed in concentration is in the acetic acid of 2%, pulls out after 15-20 minute, dries under the condition of 85-95 DEG C; Polyvinyl alcohol is dissolved in the hot water of 2 times amount, add lignin, silane coupler kh450, joining concentration after stirring is in the ethanol of 95%, stir under normal temperature and form suspension, then the composite fibre that acetic acid soaked 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 composite fibre obtaining surface modification after it cools naturally;
(4) first Aqueous Polyurethane Adhesives and emulsified wax are stirred, then add all the other residual components, make mixed slurry after stirring 10-15 minute with the speed of 200 revs/min 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 feeding hot press is carried out hot-forming (control hot pressing temperature is 180-210 DEG C, and briquetting pressure is 40kg/cm2, and the dwell time is 3-4 minute) and namely obtain product of the present invention.
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| CN201510414388.4A CN105128120A (en) | 2015-07-15 | 2015-07-15 | High-density composite fiberboard based on surface processed hybrid fiber and preparation method of high-density composite fiberboard |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007506A (en) * | 2016-05-21 | 2016-10-12 | 张羽 | Efficient waterproof anti-seeping agent |
| CN106633971A (en) * | 2016-09-22 | 2017-05-10 | 苏州佰思科节能环保科技有限公司 | Waterproof anti-static high-density environment-friendly fiber board and preparation method thereof |
| CN107352849A (en) * | 2017-06-28 | 2017-11-17 | 吕超 | A kind of preparation method of the plate of hydrophobic fiber containing modified nano-barium sulfate |
| CN107471370A (en) * | 2017-07-11 | 2017-12-15 | 英杰惠能（北京）能源新技术有限公司 | Low VOC flame retardant fibres plate and preparation method thereof |
| CN110434966A (en) * | 2019-08-01 | 2019-11-12 | 普洱林达木业有限责任公司 | A kind of production technology of environment friendly artificial board |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994021851A1 (en) * | 1993-03-24 | 1994-09-29 | Tingley Daniel A | Aligned fiber reinforcement panel for wood members |
| CN1216329A (en) * | 1997-10-31 | 1999-05-12 | 张志强 | Fiberboard producing process by utilizing waste blend fiber |
| CN1683129A (en) * | 2004-04-16 | 2005-10-19 | 云南景谷林业股份有限公司 | Artificial board and its producing method |
| CN101597482A (en) * | 2009-07-06 | 2009-12-09 | 广西丰林木业集团股份有限公司 | A kind of emulsion paraffin water repellent for fiber board |
| CN104290168A (en) * | 2014-08-15 | 2015-01-21 | 东营正和木业有限公司 | Manufacturing method for thermosetting waterborne polyurethane composite fiberboard |
| CN104479385A (en) * | 2014-11-18 | 2015-04-01 | 江苏大学 | Preparation method of reinforced straw fiber composite material |
-
2015
- 2015-07-15 CN CN201510414388.4A patent/CN105128120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994021851A1 (en) * | 1993-03-24 | 1994-09-29 | Tingley Daniel A | Aligned fiber reinforcement panel for wood members |
| CN1216329A (en) * | 1997-10-31 | 1999-05-12 | 张志强 | Fiberboard producing process by utilizing waste blend fiber |
| CN1683129A (en) * | 2004-04-16 | 2005-10-19 | 云南景谷林业股份有限公司 | Artificial board and its producing method |
| CN101597482A (en) * | 2009-07-06 | 2009-12-09 | 广西丰林木业集团股份有限公司 | A kind of emulsion paraffin water repellent for fiber board |
| CN104290168A (en) * | 2014-08-15 | 2015-01-21 | 东营正和木业有限公司 | Manufacturing method for thermosetting waterborne polyurethane composite fiberboard |
| CN104479385A (en) * | 2014-11-18 | 2015-04-01 | 江苏大学 | Preparation method of reinforced straw fiber composite material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007506A (en) * | 2016-05-21 | 2016-10-12 | 张羽 | Efficient waterproof anti-seeping agent |
| CN106633971A (en) * | 2016-09-22 | 2017-05-10 | 苏州佰思科节能环保科技有限公司 | Waterproof anti-static high-density environment-friendly fiber board and preparation method thereof |
| CN107352849A (en) * | 2017-06-28 | 2017-11-17 | 吕超 | A kind of preparation method of the plate of hydrophobic fiber containing modified nano-barium sulfate |
| CN107471370A (en) * | 2017-07-11 | 2017-12-15 | 英杰惠能（北京）能源新技术有限公司 | Low VOC flame retardant fibres plate and preparation method thereof |
| CN110434966A (en) * | 2019-08-01 | 2019-11-12 | 普洱林达木业有限责任公司 | A kind of production technology of environment friendly artificial board |
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