CN103963113A - Man-made board and manufacturing method thereof - Google Patents
Man-made board and manufacturing method thereof Download PDFInfo
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- CN103963113A CN103963113A CN201310039045.5A CN201310039045A CN103963113A CN 103963113 A CN103963113 A CN 103963113A CN 201310039045 A CN201310039045 A CN 201310039045A CN 103963113 A CN103963113 A CN 103963113A
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- wood
- adhesive
- based plate
- polyvinyl chloride
- density polyethylene
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Abstract
The invention provides a man-made board. The man-made board comprises at least two layers of single boards and adhesive located between the two adjacent layers of single boards, wherein the adhesive contains low-density polyethylene and polyvinyl chloride. The invention further provides a method for manufacturing the man-made board. The man-made board is formed by pressing and sticking more than two single boards. The method comprises the following steps: laying the adhesive between the two adjacent single boards, hot pressing and cold pressing. According to the method, the low-density polyethylene and the polyvinyl chloride are matched and used as the adhesive, so that the adhesive is used in the production process of the man-made board to enable the obtained man-made board to have better water resistance, drying resistance and fastness.
Description
Technical field
The present invention relates to a kind of wood-based plate and preparation method thereof.
Background technology
Along with the development of human society and the progress at full speed of science and technology, adhesive has obtained using widely in building, packing, automobile, boats and ships, timber, petrochemical industry, metallurgy, machinery, shoemaking, weaving, medical treatment, Aero-Space and daily life, and the effect of its performance and the economic benefit of generation are also more and more significant.
In the production of Wood composite material, using maximum adhesives is to take urea aldehyde, phenolic aldehyde and the melmac that formaldehyde is base-material, thereby in the production of the synthetic and sheet material of adhesive and application process ubiquity formaldehyde release And Spread of Solute, because formaldehyde is harmful to people's health, therefore will people's working environment and inhabitation place be polluted, infringement people's is healthy.
Be accompanied by and produce and growth in the living standard, no matter the adhesive of common molecular structure is considered or considers far can not meet the application of people productive life from the angle of performance from the angle of environmental protection, at this moment macromolecular material and nano material become the effective way of improving various material properties, and macromolecule base polymer and nanometer polymer become the important research direction of adhesive.
Granted publication is number for CN101554741B discloses a kind of formaldehyde-free decorative board, by multi-layer solid wood veneer (in plate), with adhesive, overlayed and forms, and wherein, described adhesive is plastic foil (plastic membrane of polyvinyl chloride or polyethylene plastic film).The content of formaldehyde of this invention dalle is zero, and human body and surrounding environment are not caused to any murder by poisoning or pollution, really realizes environmental friendliness.
Yet, overcoming on the basis of environmental pollution, along with people further improve the requirement of wood-based plate, in order to obtain the better wood-based plate of property indices, adhesive has been proposed to harsher requirement.
Summary of the invention
The object of this invention is to provide the wood-based plate that a kind of property indices further improves.
The invention provides a kind of wood-based plate, this wood-based plate comprises at least two-layer veneer and the adhesive between adjacent two layers veneer, and wherein, described adhesive contains low density polyethylene (LDPE) and polyvinyl chloride.
The invention provides a kind of method of making wood-based plate of the present invention, wherein, described wood-based plate is overlayed and is formed by plural veneer, and the method comprises: between two adjacent veneers, spread adhesive, after first hot pressing, cold pressing.
In the present invention, by low density polyethylene (LDPE) and polyvinyl chloride are used in conjunction with as adhesive, the wood-based plate that this adhesive is obtained for the production process of wood-based plate has better resistance to water, dry strength and fastness.And according to country, the examination criteria of MULTILAYER COMPOSITE plank is detected, the properties of wood-based plate of the present invention (wood-based plate that embodiment makes is glued board) all meets national standard.The performance detecting comprises: main intensity index meets the requirement of the national standards such as GB/T9846.3-2004, GB/T11718-1999 and GB/T4897.2-2003, bonding strength and dipping are peeled off also can meet respectively GB/T9846.3-2004 < < glued board > > type Ⅰ plywood standard, GB/T18103-2000 < < solid wooden compound floor > > standard, the requirement of environment for use 2 in Japan structure assembly material standard JAS SE-9, the regulation of the non-structure assembly material standard JAS SE-8 of Japan, tensile yield strength meets the requirement of GB/T1040, impact flexibility, bending strength meet the requirement of GB/T17657-1999, all the other indexs all meet the requirement of GB/T17657-1999.
Other features and advantages of the present invention partly in detail are described the specific embodiment subsequently.
The specific embodiment
Below the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
The invention provides a kind of wood-based plate, this wood-based plate comprises at least two-layer veneer and the adhesive between adjacent two layers veneer, and wherein, described adhesive contains low density polyethylene (LDPE) and polyvinyl chloride.
According to wood-based plate of the present invention, optional wider range of the content of low density polyethylene (LDPE) and polyvinyl chloride in described adhesive, for the present invention, in order to improve resistance to water, dry strength and the fastness etc. of wood-based plate, the weight ratio of preferred described low density polyethylene (LDPE) and polyvinyl chloride is 0.01-100:1, more preferably 0.05-50:1, is particularly preferably 0.1-10:1.
According to wood-based plate of the present invention, described low density polyethylene (LDPE) can be the conventional low density polyethylene (LDPE) using of the art, and for the present invention, the melt temperature of preferred described low density polyethylene (LDPE) is 100-300 ℃, be preferably 150-230 ℃, most preferably be 210 ℃.
According to wood-based plate of the present invention, the melt index of preferred described low density polyethylene (LDPE) is 0.2-100g/10min, is preferably 0.3-50g/10min, is preferably 0.5-20g/10min, most preferably is 1-10g/10min.
According to of the present invention preferred embodiment a kind of, the melt temperature of preferred described low density polyethylene (LDPE) is 150-230 ℃, more preferably 210 ℃; Melt index is 0.5-20g/10min, most preferably is 1-10g/10min.
In the present invention, described low density polyethylene (LDPE) can directly be commercially available, and also can prepare, and the preparation method of described low density polyethylene (LDPE) is conventionally known to one of skill in the art, and the present invention does not repeat them here.
According to wood-based plate of the present invention, described polyvinyl chloride can be the conventional polyvinyl chloride using of the art, and for the present invention, the melt temperature of preferred described polyvinyl chloride is 100-350 ℃, is preferably 150-230 ℃, most preferably is 180 ℃.
According to wood-based plate of the present invention, the melt index of preferred described polyvinyl chloride is 0.2-100g/10min, is preferably 0.3-50g/10min, is preferably 0.5-20g/10min, most preferably is 1-10g/10min.
According to of the present invention preferred embodiment a kind of, the melt temperature of preferred described polyvinyl chloride is 150-230 ℃, more preferably 180 ℃; Melt index is 0.5-20g/10min, most preferably is 1-10g/10min.
In the present invention, described polyvinyl chloride can directly be commercially available, and also can prepare, and the preparation method of described polyvinyl chloride is conventionally known to one of skill in the art, and the present invention does not repeat them here.
According to wood-based plate of the present invention, the content of preferred described adhesive is 60-100g/m
2cemented surface.
The invention provides a kind of method of making wood-based plate of the present invention, wherein, described wood-based plate is overlayed and is formed by plural veneer, and the method comprises: between two adjacent veneers, spread adhesive, after first hot pressing, cold pressing.
According to the method for making artificial plate of the present invention, the kind of described adhesive and character are introduced in detail in the process of aforementioned description wood-based plate of the present invention, at this, no longer repeat.
In the present invention, optional wider range of described hot pressing and the condition of colding pressing, it can be adjusted according to specific needs, as long as can guarantee that adhesive of the present invention can bring into play adhesive effect.Under preferable case, the condition of described hot pressing comprises: the temperature of hot pressing is more than 120 ℃, is preferably 130-160 ℃, and with respect to the veneer of every square metre of 1 centimetre of thickness, pressure is more than 16 tons, is preferably 32-340 ton; Described condition of colding pressing comprises: the temperature of colding pressing is below 90 ℃, is preferably 0-75 ℃; With respect to the veneer of every square metre of 1 centimetre of thickness, pressure is more than 26 tons, is preferably 42-840 ton.
Optional wider range of hot pressing described in the present invention and time of colding pressing, specifically can select according to the equipment of exerting pressure that (what for example select is hot press with high frequency, the time of hot pressing can be shorter), those skilled in the art all can know this, for the present invention, under preferable case, with respect to the veneer of 1 millimeter of thickness, the time of described hot pressing is 1/60-5 minute, is preferably 1.5/60-3 minute; The described time of colding pressing is 1/60-5 minute, is preferably 1.5/60-3 minute.
In concrete use procedure, adhesive of the present invention can directly mix the pressed powder of various components to obtain, equally, when if low density polyethylene (LDPE), polyvinyl chloride provide as the form of plastic foil with other forms, in concrete use procedure, plastic foil separately can be layered between veneer with random order, its laying order does not affect result of the present invention.
In the present invention, melt index is to measure according to the method for stipulating in GB/T3682-2000, and particularly, probe temperature is 230 ℃, and load is 2.16 kilograms.
In the present invention, on the differential scanning calorimeter that melt temperature is is TA-9900 in the model being purchased from U.S. Du-Pont company, measure and obtain, particularly, by about 5mg sample, at N
2under protection, with the speed intensification of 10 ℃/min, finally obtain the melt temperature of sample.
Below by specific embodiment, the present invention will be described in detail, but the present invention is not limited to this.
Embodiment 1
3 of plates of solid wood (board using poplar board, water content is 1 % by weight, specification 1230*930*1.5mm), by spreading uniformly adhesive between every two adjacent plates of solid wood, (in adhesive, the weight ratio of low density polyethylene (LDPE) and polyvinyl chloride is 5:1; Wherein, low density polyethylene (LDPE) is purchased from chemical inc asphalt in Shenli Refinery of PetroChina Company Limited., and model is DGDA-6098, and melt temperature is 210 ℃, and melt index is 1.2-8g/10min, plastic foil, and thickness is 0.07mm; Polyvinyl chloride is S-1000 purchased from PetroChina Company Limited. chemical inc asphalt in Shenli Refinery model, and melt temperature is 180 ℃, and melt index is 1.6g/10min, plastic foil, and thickness is 0.07mm), the consumption of adhesive is 60 grams/m
2; Adopting trigger squeeze to carry out pressing, is first 600 tons at pressure, and temperature is hot pressing 10 minutes under the condition of 130 ℃, at pressure, is then 700 tons, and temperature is to cold pressing 12 minutes under the condition of 30 ℃, obtains glued board.
After testing, the glued board of the present embodiment made soaks and does not ftracture for 50 hours in the boiling water of 100 ℃, then at 120 ℃ continuous drying 40 hours also there are no cracking phenomena.
According to country, the examination criteria of MULTILAYER COMPOSITE plank is detected, the properties of the glued board of the present embodiment made all meets national standard.In the present embodiment and following embodiment, the performance of detection comprises: main intensity index meets the requirement of the national standards such as GB/T9846.3-2004, GB/T11718-1999 and GB/T4897.2-2003, bonding strength and dipping are peeled off also can meet respectively GB/T9846.3-2004 < < glued board > > type Ⅰ plywood standard, GB/T18103-2000 < < solid wooden compound floor > > standard, the requirement of environment for use 2 in Japan structure assembly material standard JAS SE-9, the regulation of the non-structure assembly material standard JAS SE-8 of Japan, tensile yield strength meets the requirement of GB/T1040, impact flexibility, bending strength meet the requirement of GB/T17657-1999, all the other indexs all meet the requirement of GB/T17657-1999.
Embodiment 2
6 of plates of solid wood (Eucalyptus veneer, veneer water content is 2 % by weight, specification 1230*930*2mm), by spreading uniformly adhesive between every two adjacent plates of solid wood, (in adhesive, the weight ratio of low density polyethylene (LDPE) and polyvinyl chloride is 10:1; Wherein, low density polyethylene (LDPE) is purchased from chemical inc asphalt in Shenli Refinery of PetroChina Company Limited., and model is DGDA-6098, and melt temperature is 210 ℃, and melt index is 1.2-8g/10min, plastic foil, and thickness is 0.07mm; Polyvinyl chloride is S-1000 purchased from PetroChina Company Limited. chemical inc asphalt in Shenli Refinery model, and melt temperature is 180 ℃, and melt index is 1.6g/10min, plastic foil, and thickness is 0.07mm), the consumption of adhesive is 80 grams/m
2; Adopting trigger squeeze to carry out pressing, is first 650 tons at pressure, and temperature is hot pressing 15 minutes under the condition of 150 ℃, at pressure, is then 790 tons, and temperature is to cold pressing 20 minutes under the condition of subzero 20 ℃, obtains glued board.
After testing, the glued board of the present embodiment made soaks and does not ftracture for 50 hours in the boiling water of 100 ℃, then at 120 ℃ continuous drying 40 hours also there are no cracking phenomena.
According to country, the examination criteria of MULTILAYER COMPOSITE plank is detected, the properties of the glued board of the present embodiment made also all meets national standard.
Embodiment 3
11 of plates of solid wood, in plates of solid wood, 5 veneers are Eucalyptus veneer (water content is 2 % by weight), 6 veneers are board using poplar board (water content is 1 % by weight), board using poplar board and Eucalyptus veneer interfolded, specification is 1230*930*1.5mm, by spreading uniformly adhesive between every two adjacent plates of solid wood, (in adhesive, the weight ratio of low density polyethylene (LDPE) and polyvinyl chloride is 0.1:1; Wherein, low density polyethylene (LDPE) is purchased from chemical inc asphalt in Shenli Refinery of PetroChina Company Limited., and model is DGDA-6098, and melt temperature is 210 ℃, and melt index is 1.2-8g/10min, plastic foil, and thickness is 0.07mm; Polyvinyl chloride is S-1000 purchased from PetroChina Company Limited. chemical inc asphalt in Shenli Refinery model, and melt temperature is 180 ℃, and melt index is 1.6g/10min, plastic foil, and thickness is 0.07mm), the consumption of adhesive is 100 grams/m
2; Adopting trigger squeeze to carry out pressing, is first 400 tons at pressure, and temperature is hot pressing 30 minutes under the condition of 140 ℃, at pressure, is then 960 tons, and temperature is to cold pressing 35 minutes under the condition of 40 ℃, obtains glued board.
After testing, the glued board of the present embodiment made soaks and does not ftracture for 50 hours in the boiling water of 100 ℃, then at 120 ℃ continuous drying 40 hours also there are no cracking phenomena.
According to country, the examination criteria of MULTILAYER COMPOSITE plank is detected, the properties of the glued board of the present embodiment made also all meets national standard.
Embodiment 4
According to the method making artificial plate of embodiment 3, different, in the adhesive of use, the weight ratio of low density polyethylene (LDPE) and polyvinyl chloride is 20:1, and all the other conditions are all identical, obtain glued board.
After testing, the glued board of the present embodiment made soaks and does not ftracture for 45 hours in the boiling water of 100 ℃, then at 120 ℃ continuous drying 35 hours also there are no cracking phenomena.And soak, within 50 hours, there is cracking phenomena in the boiling water of 100 ℃.
According to country, the examination criteria of MULTILAYER COMPOSITE plank is detected, the properties of the glued board of the present embodiment made also all meets national standard.
Comparative example 1
According to the method making artificial plate of embodiment 3, different, the adhesive of use is independent low density polyethylene (LDPE), and the consumption of low density polyethylene (LDPE) is identical with the consumption of adhesive, and all the other conditions are all identical, obtain glued board.
After testing, the glued board of this comparative example made soaks and within 35 hours, has cracking phenomena in the boiling water of 100 ℃.
Comparative example 2
According to the method making artificial plate of embodiment 3, different, the adhesive of use is independent polyvinyl chloride, and the consumption of polyvinyl chloride is identical with the consumption of adhesive, and all the other conditions are all identical, obtain glued board.
After testing, the glued board of this comparative example made soaks and within 35 hours, has cracking phenomena in the boiling water of 100 ℃.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode.
In addition, between various embodiment of the present invention, also can be combined, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a wood-based plate, this wood-based plate comprises at least two-layer veneer and the adhesive between adjacent two layers veneer, it is characterized in that, described adhesive contains low density polyethylene (LDPE) and polyvinyl chloride.
2. wood-based plate according to claim 1, wherein, in described adhesive, the weight ratio of low density polyethylene (LDPE) and polyvinyl chloride is 0.01-100:1, is preferably 0.05-50:1, more preferably 0.1-10:1.
3. wood-based plate according to claim 1 and 2, wherein, the melt temperature of described low density polyethylene (LDPE) is 100-300 ℃.
4. wood-based plate according to claim 3, wherein, the melt temperature of described low density polyethylene (LDPE) is 150-230 ℃, melt index is 0.5-20g/10min.
5. according to the wood-based plate described in any one in claim 1-4, wherein, the melt temperature of described polyvinyl chloride is 100-350 ℃.
6. wood-based plate according to claim 5, wherein, the melt temperature of described polyvinyl chloride is 150-230 ℃, melt index is 0.5-20g/10min.
7. according to the wood-based plate described in any one in claim 1-6, wherein, the content of described adhesive is 60-100g/m
2cemented surface.
8. make a method for the wood-based plate described in any one in claim 1-7, wherein, described wood-based plate is overlayed and is formed by plural veneer, and the method comprises: between two adjacent veneers, spread adhesive, after first hot pressing, cold pressing.
9. method according to claim 8, wherein, the condition of described hot pressing comprises: the temperature of hot pressing is more than 120 ℃, is preferably 130-160 ℃, with respect to the veneer of every square metre of 1 centimetre of thickness, pressure is more than 16 tons, is preferably 32-340 ton; Described condition of colding pressing comprises: the temperature of colding pressing is below 90 ℃, is preferably 0-75 ℃; With respect to the veneer of every square metre of 1 centimetre of thickness, pressure is more than 26 tons, is preferably 42-840 ton.
10. method according to claim 8 or claim 9, wherein, with respect to the veneer of 1 millimeter of thickness, the time of described hot pressing is 1/60-5 minute, is preferably 1.5/60-3 minute; The described time of colding pressing is 1/60-5 minute, is preferably 1.5/60-3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039045.5A CN103963113A (en) | 2013-01-31 | 2013-01-31 | Man-made board and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039045.5A CN103963113A (en) | 2013-01-31 | 2013-01-31 | Man-made board and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103963113A true CN103963113A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310039045.5A Pending CN103963113A (en) | 2013-01-31 | 2013-01-31 | Man-made board and manufacturing method thereof |
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|---|---|
| CN (1) | CN103963113A (en) |
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2013
- 2013-01-31 CN CN201310039045.5A patent/CN103963113A/en active Pending
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Application publication date: 20140806 |