CN104974541A - Wood based panel containing straws, and preparation method thereof - Google Patents
Wood based panel containing straws, and preparation method thereof Download PDFInfo
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- CN104974541A CN104974541A CN201510407640.9A CN201510407640A CN104974541A CN 104974541 A CN104974541 A CN 104974541A CN 201510407640 A CN201510407640 A CN 201510407640A CN 104974541 A CN104974541 A CN 104974541A
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- waterborne polyurethane
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Abstract
The present invention discloses a wood based panel containing straws, wherein the wood based panel is prepared from the following raw materials by weight: 35-45 parts of straws and 2-8 parts of an aromatic aqueous polyurethane adhesive, the aromatic aqueous polyurethane adhesive is prepared from the following raw materials by weight: 50-65 parts of an aromatic aqueous polyurethane resin, 33-45 parts of water, 0.5-1.5 parts of an aqueous wetting leveling agent, 0.5-1.5 parts of an aqueous defoamer, and 1-2 parts of an aqueous thickener, and the aromatic aqueous polyurethane adhesive preparation steps comprise: carrying out mixing stirring on the aromatic aqueous polyurethane resin, the water, the aqueous wetting leveling agent and the aqueous defoamer, slowly adding the aqueous thickener after stirring for 20 min, uniformly stirring, and finally filtering with a 80 mesh filtration screen to obtain the aromatic aqueous polyurethane adhesive.
Description
Technical field
The present invention relates to a kind of wood-based plate containing stalk and preparation method thereof, belong to man-made board technology field.
Background technology
Because urea-formaldehyde glue is that urea and formaldehyde obtain through catalyst polycondensation.The wood-based panel product using urea-formaldehyde resin adhesive to manufacture can release formaldehyde continuously, formaldehyde is the toxic gas with intense stimulus, not only contaminate environment, and have strong impulse to organs such as human eye, mouth, nose, larynxs, cause lung, liver, function of immune system extremely, strong carcinogenic substance, harm humans health and ecotope.
Urea-formaldehyde resin adhesive produces free formaldehyde pollution and harm mainly contains several like this approach:
1. Formaldehyde Production enterprise aldehyde-containing sewage and waste gas.
2. urea-formaldehyde resin adhesive manufacturing enterprise discharge aldehyde-containing sewage waste gas, and urea and formaldehyde reaction insufficient, make the free formaldehyde of remained unreacted in resin.
3. participated in the formaldehyde reacted during urea-formaldehyde resin adhesive synthesis, owing to producing unstable group, when for wood-based plate, decomposed again in hot pressing and give off free formaldehyde.
4. in use constantly decompose with the wood-based plate that urea-formaldehyde resin adhesive is produced and produce formaldehyde.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of wood-based plate containing stalk and preparation method thereof is provided.
The present invention is achieved through the following technical solutions:
A kind of wood-based plate containing stalk, be made up of the raw material of following parts by weight: stalk 35-45 part and aromatic waterborne polyurethane sizing agent 2-8 part, described aromatic waterborne polyurethane sizing agent is made up into of the raw material of following parts by weight: aromatic waterborne polyurethane resin 50-65 part, water 33-45 part, water-based moistening flatting agent 0.5-1.5 part, water-based defoamer 0.5-1.5 part and water-based thickener 1-2 part; Being obtained by following steps of described aromatic waterborne polyurethane sizing agent: first by aromatic waterborne polyurethane resin, water, water-based moistening flatting agent and water-based defoamer mix and blend, stir and slowly add water-based thickener in 20 minutes later, stir and finally filter with 80 mesh filter screens, obtain aromatic waterborne polyurethane sizing agent.
Described a kind of wood-based plate containing stalk, described stalk is remaining cauline leaf part after the farm crop threshings such as cotton, rape, wheat or straw.
The preparation method of described a kind of wood-based plate containing stalk, comprises following step:
(1) stalk is dropped into pulverizer to carry out being crushed to length and be not more than the broken end of 1cm;
(2) drying machine drying to water ratio being dropped at broken end is 12-16%;
(3) stirrer is dropped at broken end, add aromatic waterborne polyurethane sizing agent and carry out stirring until all use state;
(4) being transferred in forming mould by mixture, is 110 DEG C-150 DEG C in temperature, and pressure is keep 1-2 hour under the condition of 400-600 ton;
(5) namely profiled sheeting obtains artificial board of straw after slaking cutting.
The invention has the beneficial effects as follows:
The aromatic waterborne polyurethane emulsion that the present invention uses, due to the existence of rigidity aromatic group in molecular chain, is conducive to the mechanical property improving the rear material of solidification.And improve the temperature tolerance of adhesive layer.
Preparation method of the present invention is simple, and the raw material of employing is drawn materials conveniently, cheap, and the wood-based plate prepared can not produce formaldehyde, safety environmental protection again.
Embodiment
Embodiment 1
Plant the wood-based plate containing stalk, be made up of the raw material of following parts by weight: stalk 35 parts and aromatic waterborne polyurethane sizing agent 8 parts, described aromatic waterborne polyurethane sizing agent is made up into of the raw material of following parts by weight: aromatic waterborne polyurethane resin 65 parts, 33 parts, water, water-based moistening flatting agent 0.5 part, water-based defoamer 1.5 parts and water-based thickener 1 part; Being obtained by following steps of described aromatic waterborne polyurethane sizing agent: first by aromatic waterborne polyurethane resin, water, water-based moistening flatting agent and water-based defoamer mix and blend, stir and slowly add water-based thickener in 20 minutes later, stir and finally filter with 80 mesh filter screens, obtain aromatic waterborne polyurethane sizing agent.
The preparation method of described a kind of wood-based plate containing stalk, comprises following step:
(1) stalk is dropped into pulverizer to carry out being crushed to length and be not more than the broken end of 1cm;
(2) drying machine drying to water ratio being dropped at broken end is 12-16%;
(3) stirrer is dropped at broken end, add aromatic waterborne polyurethane sizing agent and carry out stirring until all use state;
(4) being transferred in forming mould by mixture, is 110 DEG C-150 DEG C in temperature, and pressure is keep 1-2 hour under the condition of 400-600 ton;
(5) namely profiled sheeting obtains artificial board of straw after slaking cutting.
Dipping and stripping performance is detected: the every strip length on each glue-line of test specimen is all no more than 25mm according to GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels.
Surface bonding intensity: 0.8MPa.
According to Form aldehyde release limit detection burst size of methanal in 6.3 indoor decorating and refurnishing materials wood-based plates in GB 18580-2001 and goods thereof: do not detect.
Embodiment 2
A kind of wood-based plate containing stalk, be made up of the raw material of following parts by weight: stalk 45 parts and aromatic waterborne polyurethane sizing agent 2 parts, described aromatic waterborne polyurethane sizing agent is made up into of the raw material of following parts by weight: aromatic waterborne polyurethane resin 50 parts, 45 parts, water, water-based moistening flatting agent 1.5 parts, water-based defoamer 0.5 part and water-based thickener 2 parts; Being obtained by following steps of described aromatic waterborne polyurethane sizing agent: first by aromatic waterborne polyurethane resin, water, water-based moistening flatting agent and water-based defoamer mix and blend, stir and slowly add water-based thickener in 20 minutes later, stir and finally filter with 80 mesh filter screens, obtain aromatic waterborne polyurethane sizing agent.
The preparation method of described a kind of wood-based plate containing stalk, comprises following step:
(1) stalk is dropped into pulverizer to carry out being crushed to length and be not more than the broken end of 1cm;
(2) drying machine drying to water ratio being dropped at broken end is 12-16%;
(3) stirrer is dropped at broken end, add aromatic waterborne polyurethane sizing agent and carry out stirring until all use state; (4) being transferred in forming mould by mixture, is 110 DEG C-150 DEG C in temperature, and pressure is keep 1-2 hour under the condition of 400-600 ton;
(5) namely profiled sheeting obtains artificial board of straw after slaking cutting.
Dipping and stripping performance is detected: the every strip length on each glue-line of test specimen is all no more than 20mm according to GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels.
Surface bonding intensity: 0.8MPa.
According to Form aldehyde release limit detection burst size of methanal in 6.3 indoor decorating and refurnishing materials wood-based plates in GB 18580-2001 and goods thereof: do not detect.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the wood-based plate containing stalk, it is characterized in that, be made up of the raw material of following parts by weight: stalk 35-45 part and aromatic waterborne polyurethane sizing agent 2-8 part, described aromatic waterborne polyurethane sizing agent is made up into of the raw material of following parts by weight: aromatic waterborne polyurethane resin 50-65 part, water 33-45 part, water-based moistening flatting agent 0.5-1.5 part, water-based defoamer 0.5-1.5 part and water-based thickener 1-2 part; Being obtained by following steps of described aromatic waterborne polyurethane sizing agent: first by aromatic waterborne polyurethane resin, water, water-based moistening flatting agent and water-based defoamer mix and blend, stir and slowly add water-based thickener in 20 minutes later, stir and finally filter with 80 mesh filter screens, obtain aromatic waterborne polyurethane sizing agent.
2. a kind of wood-based plate containing stalk according to claim 1, it is characterized in that, described stalk is remaining cauline leaf part after the farm crop threshings such as cotton, rape, wheat or straw.
3. the preparation method of a kind of wood-based plate containing stalk according to claim 1, is characterized in that, comprise following step:
(1) stalk is dropped into pulverizer to carry out being crushed to length and be not more than the broken end of 1cm;
(2) drying machine drying to water ratio being dropped at broken end is 12-16%;
(3) stirrer is dropped at broken end, add aromatic waterborne polyurethane sizing agent and carry out stirring until all use state;
(4) being transferred in forming mould by mixture, is 110 DEG C-150 DEG C in temperature, and pressure is keep 1-2 hour under the condition of 400-600 ton;
(5) namely profiled sheeting obtains artificial board of straw after slaking cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407640.9A CN104974541A (en) | 2015-07-06 | 2015-07-06 | Wood based panel containing straws, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407640.9A CN104974541A (en) | 2015-07-06 | 2015-07-06 | Wood based panel containing straws, and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN104974541A true CN104974541A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510407640.9A Pending CN104974541A (en) | 2015-07-06 | 2015-07-06 | Wood based panel containing straws, and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008188964A (en) * | 2007-02-08 | 2008-08-21 | Achilles Corp | Woody board |
| CN101348703A (en) * | 2008-06-20 | 2009-01-21 | 中山大学 | Aqueous polyurethane adhesive and preparation thereof |
| CN101701140A (en) * | 2009-04-28 | 2010-05-05 | 江苏工业学院 | Preparation method and application in wood processing of water-based polyurethane adhesive |
| CN101823272A (en) * | 2010-04-16 | 2010-09-08 | 蒋道友 | Technology for producing bamboo and wood artificial board with formaldehyde-free and phenol-free adhesive |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
| CN102463617A (en) * | 2010-11-01 | 2012-05-23 | 王殿营 | Method for producing plant straw fiber plate |
| CN103045150A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院长春应用化学研究所 | Waterborne polyurethane adhesive and preparation method thereof |
| CN104044198A (en) * | 2013-03-13 | 2014-09-17 | 湖南省天金科技有限公司 | Ecological board and preparation method thereof |
-
2015
- 2015-07-06 CN CN201510407640.9A patent/CN104974541A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008188964A (en) * | 2007-02-08 | 2008-08-21 | Achilles Corp | Woody board |
| CN101348703A (en) * | 2008-06-20 | 2009-01-21 | 中山大学 | Aqueous polyurethane adhesive and preparation thereof |
| CN101701140A (en) * | 2009-04-28 | 2010-05-05 | 江苏工业学院 | Preparation method and application in wood processing of water-based polyurethane adhesive |
| CN101823272A (en) * | 2010-04-16 | 2010-09-08 | 蒋道友 | Technology for producing bamboo and wood artificial board with formaldehyde-free and phenol-free adhesive |
| CN102463617A (en) * | 2010-11-01 | 2012-05-23 | 王殿营 | Method for producing plant straw fiber plate |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
| CN103045150A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院长春应用化学研究所 | Waterborne polyurethane adhesive and preparation method thereof |
| CN104044198A (en) * | 2013-03-13 | 2014-09-17 | 湖南省天金科技有限公司 | Ecological board and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘益军: "《聚氨酯树脂及其应用 第1版》", 31 January 2012 * |
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Application publication date: 20151014 |