CN101928546A - Formaldehyde-free wood adhesive and preparation method thereof - Google Patents

Formaldehyde-free wood adhesive and preparation method thereof Download PDF

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Publication number
CN101928546A
CN101928546A CN 201010124329 CN201010124329A CN101928546A CN 101928546 A CN101928546 A CN 101928546A CN 201010124329 CN201010124329 CN 201010124329 CN 201010124329 A CN201010124329 A CN 201010124329A CN 101928546 A CN101928546 A CN 101928546A
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formaldehyde
ppe
wood adhesive
powder
free wood
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CN101928546B (en
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田志壮
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Zhengzhou Yikang Wood Technology Co ltd
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Abstract

The invention discloses a formaldehyde-free wood adhesive. The formaldehyde-free wood adhesive consists of the following components in percentage by weight: 0 to 94.8 percent of water, 5 to 99.8 percent of mixed vegetable protein powder, 0.1 to 94.9 percent of PPE-N, 0.05 to 5 percent of preservative, 0 to 15 percent of pH regulator, 0 to 10 percent of thickening agent, 0.05 to 15 percent of antifreeze and 0 to 20 percent of filler, wherein the mixed vegetable protein powder is a mixture formed from defatted soybean powder and defatted pea protein powder or defatted cottonseed meal powder or defatted castor meal powder in a weight ratio of (1-5):1; and the PPE-N is prepared from polyamide epichlorohydrin and urea. The wood adhesive of the invention adopts formaldehyde-free raw materials, so no formaldehyde is released in the production processes of the adhesive and an artificial sheet material; and an E0-level (GB/T9846.3-2004) artificial sheet material of which the formaldehyde release amount is far less than 0.5mg/L can be produced; and all trance formaldehyde in an artificial sheet material product is from a wood raw material per se, so that the problem of the release of the formaldehyde is solved fundamentally.

Description

A kind of formaldehyde-free wood adhesive and preparation method thereof
Technical field
The present invention relates to a kind of formaldehyde-free wood adhesive, also relate to a kind of preparation method of this formaldehyde-free wood adhesive simultaneously.
Background technology
Contained formaldehyde in the artificial board product, eliminating minute derives from wood raw material itself, and other all is mainly derived from tackiness agent.At present, tackiness agent is widely used in wood working industry, and as glued board, lumber core, fiberboard and shaving board etc., wherein employed tackiness agent mainly is " three-aldehyde glue ", i.e. urea-formaldehyde resin, resol and terpolycyantoamino-formaldehyde resin.Wherein cheap because of urea-formaldehyde resin, excellent property is widely used, but because the raw material of preparation urea-formaldehyde resin includes formaldehyde, therefore having formaldehyde in the production of urea-formaldehyde resin and use discharges, and the artificial board that uses urea-formaldehyde resin adhesive processing also has formaldehyde release, release period is 3 ~ 15 years, thereby causes the formaldehyde content in the room air to exceed standard for a long time, and people healthy caused serious harm.At present a lot of sheet material producers adopt the urea-formaldehyde resin that reduces formaldehyde mole ratio, but this can reduce the bonding strength of tackiness agent; Perhaps adopt means such as formaldehyde is sheltered, adsorbed, sealing, but this can only temporarily stop the release of formaldehyde, can not fundamentally solve formaldehyde and discharge problem, in case possessed formaldehyde evaporable condition, the formaldehyde of this part still can discharge in a large number constantly, and people's healthy continuing worked the mischief.
Summary of the invention
The purpose of this invention is to provide a kind of formaldehyde-free wood adhesive, discharge, improve the bond strength and the water tolerance of tackiness agent simultaneously with the formaldehyde of stopping tackiness agent.
Another object of the present invention provides a kind of preparation method of formaldehyde-free wood adhesive.
In order to realize above purpose, the technical solution adopted in the present invention is: a kind of formaldehyde-free wood adhesive, form by following components in weight percentage: water 0-94.8%, mixed plant protein powder 5-99.8%, PPE-N 0.1-94.9%, sanitas 0.05-5%, pH regulator agent 0-15%, tackifier 0-10%, frostproofer 0.05-15% and filler 0-20%; Wherein said egg mix white powder is defatted soy flour and degreasing Semen Pisi sativi protein powder or degreasing cottonseed meal powder or degreasing castor-oil plant dregs of rice powder according to (1-5): the mixture of 1 weight ratio; Described PPE-N is formed by daiamid epoxy chloropropane and urea production.
Formaldehyde-free wood adhesive preferred version of the present invention is: water 0-62%, mixed plant protein powder 21-63%, PPE-N 10-50%, sanitas 0.4-2.3%, pH regulator agent 0-2.5%, tackifier 0-6.2%, frostproofer 0.2-8% and filler 0-15 %; Wherein said mixed plant protein powder is defatted soy flour and degreasing Semen Pisi sativi protein powder or degreasing cottonseed meal powder or degreasing castor-oil plant dregs of rice powder according to (1-2.5): the mixture of 1 weight ratio.
Protein content in the described mixed plant protein powder is 35-55%.
The weight percent of urea is 0.01-50% among the described PPE-N.
Described PPE-N is made by following method: daiamid epoxy chloropropane and urea are at room temperature mixed, continue stirring and obtained PPE-N in 0.5-5 hour.
Described sanitas is a kind of or its arbitrary combination in potassium sorbate, Sodium Benzoate, borax, TB10 strong fungicide, sodium bisulfite, sodium sulphite anhydrous 99.3, Sodium Pyrosulfite, the BIT sanitas.
Described pH regulator agent is acid or alkali commonly used.
Described tackifier are a kind of or its arbitrary combination in Xylo-Mucine, polyvinyl alcohol, isocyanic ester, water-based isocyanate, polyacrylamide, vinyl acetate, carboxylic styrene butadiene latex, vinyl acetate emulsion, acrylic ester emulsion, starch, treated starch, the flour.
Described frostproofer is a kind of or its arbitrary combination in ethylene glycol, glycerine, acetone, propyl carbinol, isopropylcarbinol, the calcium chloride.
Described filler is a kind of or its arbitrary combination in diatomite, kaolin, wilkinite, talcum powder, glass silk floss, rock wool, glass powder, fine sand, sawdust, whole meal flour, nutshell powder, tree bark powder, Mierocrystalline cellulose, the xylogen.
The preparation method of formaldehyde-free wood adhesive of the present invention is: at first prepare PPE-N, stirring under normal temperature, lasting agitation condition obtained in 0.5-5 hour with PPE and urea; Secondly PPE-N, mixed plant protein powder, sanitas, frostproofer and other raw material are added respectively in the container that has agitator, reinforced interval keeps 5-60 minute stirring; Carry out homogenization treatment or spraying drying at last and obtain liquid state or powdery formaldehyde-free wood adhesive.
Daiamid epoxy chloropropane (Polyae-Polyamine-Epichlorohydrin; abbreviation PPE) be a kind of wet strength agent for papermaking; molecular weight is between 1000-200000; on hydrophobic polymeric amide long-chain, be connected with more branch's group on its molecular structure; epoxy group(ing) on branch's group and hydroxyl can with the part radical reaction in the albumen; protein is played a very good protection, thus the water tolerance of raising tackiness agent.It is the raw material production tackiness agent that the present invention adopts PPE-N, is improving the bonding strength that further improves tackiness agent on the water-proof basis, and the consumption of minimizing PPE that can be indirect, thereby reduces production cost.
The raw material that wood adhesive of the present invention adopted is formaldehydeless raw material, and also formaldehydeless release in tackiness agent and artificial board production process can produce the E of burst size of methanal far below 0.5mg/L 0The artificial board of rank (GB/T 9846.3-2004), trace formaldehyde contained in the artificial board product be all from wood raw material itself, thereby fundamentally solved the release problem of formaldehyde.In addition, formaldehyde-free wood adhesive raw material of the present invention is simple and easy to, and the preparation method is simple to operate, and production cost is lower, is fit to suitability for industrialized production.
The present invention adds single protein powder (defatted soy flour) and mixed plant protein powder with PPE, is following contrast experiment.
1, the detection of insolubles:
Detection method: with tackiness agent at 110 ℃ of oven dry W that weighs then 1, in 63 ℃ water, soaked 1 hour then, 110 ℃ of oven dry, W weighs 2Insolubles=(W 1-W 2)/W 1* 100%.Final detected result is as shown in table 1:
Table 1: insolubles detected result
Sequence number Main ingredient The set of dispense ratio Insolubles
1 PPE+ defatted soy flour+water 50:60:100 60%
2 PPE+ defatted soy flour+degreasing castor-oil plant dregs of rice powder+water 50:30:30:100 75%
3 PPE-N+ defatted soy flour+degreasing castor-oil plant dregs of rice powder+water 50:30:30:100 81%
From the detected result of No. 1 and No. 2 as can be seen, tackiness agent of the present invention adopts the mixed plant protein raw material can improve the content of insolubles significantly, avoid this more material of stripping after the immersion of hot water of tackiness agent, therefore the water tolerance of tackiness agent of the present invention improves greatly; And from the detected result of No. 2 and No. 3 as can be seen, the present invention adopts PPE-N can further improve the water tolerance of tackiness agent.
2, glued board test:
Adopt above-mentioned 3 kinds of tackiness agent to prepare glued board, wherein the method for stipulating among standard GB/T 9846.3-2004 is adopted in the detection of the bonding strength of glued board, be about to soak 3 hours in the hot water that test specimen is placed on 63 ± 3 ℃, at room temperature cool off 10min, detected intensity then after the taking-up.Final detected result is as shown in table 2, and wherein Zhi Bei glued board thickness is 5mm.
Table 2: glued board gummed intensity data
Sequence number Dry glue intensity Wet bonding strength Hot pressing time
1 1.1Mpa 0.45Mpa 5 minutes
2 1.5Mpa 0.65Mpa 4 minutes
3 1.7Mpa 0.86Mpa 3.5 minute
According to table 2 column data as can be seen, tackiness agent of the present invention adopts the mixed plant protein raw material can significantly improve the dry glue intensity and the wet bonding strength of glued board, can be used to produce the glued board of national standard I I class, III class.In the preparation process of glued board, adopt tackiness agent of the present invention can shorten hot pressing time in addition, improve the production efficiency of glued board.
Embodiment
Contrast the detailed description of technical scheme of the present invention below in conjunction with specific embodiment.Wherein the preparation method of the PPE-N that is adopted is: PPE and urea are at the uniform velocity stirred under the agitation condition 30 ~ 60 rev/mins of normal temperature, rotating speed obtained PPE-N in 0.5 ~ 5 hour.
Embodiment 1
The component concentration and the preparation method of the formaldehyde-free wood adhesive of present embodiment are as follows:
120 gram water are put into the container of belt stirrer, the control stir speed (S.S.) is 50 ~ 200 rev/mins, add PPE-N(urea 0.1% then successively) 30 grams, defatted soy flour 35 grams and degreasing castor-oil plant dregs of rice powder 15 grams, citric acid 2 grams, potassium sorbate 1 gram, diatomite 5 grams, the reinforced lasting stirring that keeps 5-60 minute at interval according to feeding quantity is carried out homogenization treatment with colloidal mill at last and (is preferably added a little calcium hydroxide solidifying agent in use, adjust pH to neutral), promptly get formaldehyde-free wood adhesive.Wherein the protein content in defatted soy flour and the degreasing castor-oil plant dregs of rice powder is 35%.
Embodiment 2
The component concentration and the preparation method of the formaldehyde-free wood adhesive of present embodiment are as follows:
120 gram tap water are put into the container of belt stirrer, the control stir speed (S.S.) is 50 ~ 200 rev/mins, add PPE-N(urea content 50% then successively) 30 grams, defatted soy flour 30 grams and degreasing cottonseed meal powder 20 grams, citric acid 2 grams, potassium sorbate 2 grams, and glycerine 2 grams, the reinforced lasting stirring that keeps 5-60 minute at interval according to feeding quantity is handled the back spraying drying with colloidal mill and high pressure homogenizer at last, promptly gets the pulvis of formaldehyde-free wood adhesive.Wherein the protein content in defatted soy flour and the degreasing cottonseed meal powder is 40%.
Embodiment 3
The component concentration and the preparation method of the formaldehyde-free wood adhesive of present embodiment are as follows:
100 gram tap water are put into the container of belt stirrer, the control stir speed (S.S.) is 50 ~ 200 rev/mins, add PPE-N(urea 8% then successively) 50 grams, defatted soy flour 40 grams and degreasing Semen Pisi sativi protein powder 20 grams, sodium hydroxide 0.5 gram, sodium bisulfite 1 gram, and calcium chloride 1 gram, the reinforced lasting stirring that keeps 5-60 minute at interval according to feeding quantity stirs, and promptly gets formaldehyde-free wood adhesive.Wherein the protein content in defatted soy flour and the degreasing Semen Pisi sativi protein powder is 50%.
Embodiment 4
The component concentration and the preparation method of the formaldehyde-free wood adhesive of present embodiment are as follows:
100 gram tap water are put into the container of belt stirrer, the control stir speed (S.S.) is 50 ~ 200 rev/mins, add PPE-N(urea 6% then successively) 50 grams, defatted soy flour 35 grams and degreasing Semen Pisi sativi protein powder 20 grams, ethylene glycol 2.5 grams, BIT sanitas 1 gram, flour 6 grams, the reinforced lasting stirring that keeps 5-60 minute at interval according to feeding quantity stirs, and promptly gets formaldehyde-free wood adhesive.Wherein the protein content in defatted soy flour and the degreasing Semen Pisi sativi protein powder is 55%.
Wood adhesive among the embodiment 1-4 can be made flow-like or powdered tackiness agent.
Formaldehydeless protein-based wood adhesive of the present invention is when being applied to plywood production, and is the same with normal urea-formaldehyde glue using method, uses spreadometer or hairbrush double spread equably, organizes embryo arrangement, precompressed then or do not carry out precompressed, hot pressing.Hot compression parameters is 110 ~ 170 ℃, and pressure is 10 ~ 20 kilograms/cm 2
Tackiness agent of the present invention can be applied to the artificial board of all kinds, as glued board, core-board, oriented wood chipboard (OSB), shaving board, medium density fibre board (MDF), high density fiberboard, face artificial board etc., below be that example is carried out performance test to the tackiness agent of above-mentioned 4 embodiment and the glued board of application thereof with the glued board, its result is as shown in table 3, and wherein the timber of glued board employing is poplar.
The experimental result of table 3 embodiment 1-4
Figure 489620DEST_PATH_IMAGE002

Claims (10)

1. formaldehyde-free wood adhesive, it is characterized in that: form: water 0-94.8% by following components in weight percentage, mixed plant protein powder 5-99.8%, PPE-N 0.1-94.9%, sanitas 0.05-5%, pH regulator agent 0-15%, tackifier 0-10%, frostproofer 0.05-15% and filler 0-20%; Wherein said egg mix white powder is defatted soy flour and degreasing Semen Pisi sativi protein powder or degreasing cottonseed meal powder or degreasing castor-oil plant dregs of rice powder according to (1-5): the mixture of 1 weight ratio; Described PPE-N is formed by daiamid epoxy chloropropane and urea production.
2. formaldehyde-free wood adhesive according to claim 1 is characterized in that: preferred version is: water 0-62%, mixed plant protein powder 21-63%, PPE-N 10-50%, sanitas 0.4-2.3%, pH regulator agent 0-2.5%, tackifier 0-6.2%, frostproofer 0.2-8% and filler 0-15 %; Wherein said mixed plant protein powder is defatted soy flour and degreasing Semen Pisi sativi protein powder or degreasing cottonseed meal powder or degreasing castor-oil plant dregs of rice powder according to (1-2.5): the mixture of 1 weight ratio.
3. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: the protein content in the described mixed plant protein powder is 35-55%.
4. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: the weight percent of urea is 0.01-50% among the described PPE-N.
5. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: described PPE-N is made by following method: daiamid epoxy chloropropane and urea are at room temperature mixed, continue stirring and obtained PPE-N in 0.5-5 hour.
6. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: described sanitas is a kind of or its arbitrary combination in potassium sorbate, Sodium Benzoate, borax, TB10 strong fungicide, sodium bisulfite, sodium sulphite anhydrous 99.3, Sodium Pyrosulfite, the BIT sanitas.
7. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: described pH regulator agent is acid or alkali commonly used.
8. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: described tackifier are a kind of or its arbitrary combination in Xylo-Mucine, polyvinyl alcohol, isocyanic ester, water-based isocyanate, polyacrylamide, vinyl acetate, carboxylic styrene butadiene latex, vinyl acetate emulsion, acrylic ester emulsion, starch, treated starch, the flour.
9. formaldehyde-free wood adhesive according to claim 1 and 2 is characterized in that: described frostproofer is a kind of or its arbitrary combination in ethylene glycol, glycerine, acetone, propyl carbinol, isopropylcarbinol, the calcium chloride.
10. the preparation method of a formaldehyde-free wood adhesive as claimed in claim 1 is characterized in that: at first prepare PPE-N, with PPE and urea at normal temperature, continue to stir under the agitation condition and obtained in 0.5-5 hour; Secondly PPE-N, mixed plant protein powder, sanitas, frostproofer and other raw material are added respectively in the container that has agitator, reinforced interval keeps 5-60 minute stirring; Carry out homogenization treatment or spraying drying at last and obtain liquid state or powdery formaldehyde-free wood adhesive.
CN201010124329A 2010-03-15 2010-03-15 Formaldehyde-free wood adhesive and preparation method thereof Expired - Fee Related CN101928546B (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
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CN102585726A (en) * 2012-03-10 2012-07-18 广东天银化工实业有限公司 Preparation method for starch-based biomass latex adhesive
CN102604587A (en) * 2012-02-10 2012-07-25 田志壮 Formaldehyde-free adhesive and method for producing formaldehyde-free particle boards by using same
CN102618210A (en) * 2012-03-26 2012-08-01 田志壮 Formaldehyde-free adhesive and method for producing formaldehyde-free palm fiber mattress by using same
CN102676097A (en) * 2012-06-01 2012-09-19 湖南福星林业股份有限公司 Novel non-formaldehyde environment-friendly adhesive and preparation method thereof
CN102719217A (en) * 2012-06-20 2012-10-10 马晓平 Protein-based wood adhesive and preparation method thereof
CN102719102A (en) * 2012-06-20 2012-10-10 马晓平 Antiseptic method for inedible soybean protein
CN104817467A (en) * 2015-05-15 2015-08-05 北京桑普生物化学技术有限公司 Composition capable of enhancing stability of sodium hydroxymethyl glycinate solution and screening method
CN105838304A (en) * 2016-04-05 2016-08-10 宁波中科朝露新材料有限公司 Soybean-based formaldehydeless adhesive used for chipboards, and application method thereof
CN106078947A (en) * 2016-06-26 2016-11-09 周荣 A kind of modified urea-formaldehyde resin glue plywood preparation method
CN107033832A (en) * 2017-05-12 2017-08-11 山东农业大学 A kind of wood-based plate is with without aldehyde composite adhesive and preparation method thereof
CN107760192A (en) * 2017-10-30 2018-03-06 郑州宜康木业科技有限公司 A kind of formaldehydeless wood grain masking agent and preparation method thereof
CN109054705A (en) * 2018-06-22 2018-12-21 安徽索亚装饰材料有限公司 A kind of wallpaper adhesive with good wet performance
CN111139030A (en) * 2020-01-08 2020-05-12 山西大学 Enzyme modified biomacromolecule wood adhesive and preparation method thereof
CN111635731A (en) * 2020-06-08 2020-09-08 山东同利环保科技有限公司 Environment-friendly density fiberboard adhesive and preparation method thereof
CN112063364A (en) * 2020-09-14 2020-12-11 郑州轻院产业技术研究院有限公司 Vegetable protein-based formaldehyde-free adhesive

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CN101565597A (en) * 2009-06-03 2009-10-28 东北林业大学 Soy-flour-based wood adhesive modified by sodium dodecyl sulfate and glutaric dialdehyde and preparation method thereof
CN101649179A (en) * 2009-09-03 2010-02-17 北京林业大学 Modified soybean-based adhesive and preparation method thereof

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WO2009074006A1 (en) * 2007-11-22 2009-06-18 National Starch And Chemical Investment Holding Corporation An adhesive, preparation and use thereof
CN101565597A (en) * 2009-06-03 2009-10-28 东北林业大学 Soy-flour-based wood adhesive modified by sodium dodecyl sulfate and glutaric dialdehyde and preparation method thereof
CN101649179A (en) * 2009-09-03 2010-02-17 北京林业大学 Modified soybean-based adhesive and preparation method thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102604587A (en) * 2012-02-10 2012-07-25 田志壮 Formaldehyde-free adhesive and method for producing formaldehyde-free particle boards by using same
CN102585726A (en) * 2012-03-10 2012-07-18 广东天银化工实业有限公司 Preparation method for starch-based biomass latex adhesive
CN102585726B (en) * 2012-03-10 2013-04-10 广东天银化工实业有限公司 Preparation method for starch-based biomass latex adhesive
CN102618210A (en) * 2012-03-26 2012-08-01 田志壮 Formaldehyde-free adhesive and method for producing formaldehyde-free palm fiber mattress by using same
CN102676097A (en) * 2012-06-01 2012-09-19 湖南福星林业股份有限公司 Novel non-formaldehyde environment-friendly adhesive and preparation method thereof
CN102719217A (en) * 2012-06-20 2012-10-10 马晓平 Protein-based wood adhesive and preparation method thereof
CN102719102A (en) * 2012-06-20 2012-10-10 马晓平 Antiseptic method for inedible soybean protein
CN104817467A (en) * 2015-05-15 2015-08-05 北京桑普生物化学技术有限公司 Composition capable of enhancing stability of sodium hydroxymethyl glycinate solution and screening method
CN105838304A (en) * 2016-04-05 2016-08-10 宁波中科朝露新材料有限公司 Soybean-based formaldehydeless adhesive used for chipboards, and application method thereof
CN105838304B (en) * 2016-04-05 2018-10-30 宁波中科朝露新材料有限公司 A kind of soybean-based Formaldehyde-free adhesive can be used for particieboard and its application process
CN106078947A (en) * 2016-06-26 2016-11-09 周荣 A kind of modified urea-formaldehyde resin glue plywood preparation method
CN107033832A (en) * 2017-05-12 2017-08-11 山东农业大学 A kind of wood-based plate is with without aldehyde composite adhesive and preparation method thereof
CN107760192A (en) * 2017-10-30 2018-03-06 郑州宜康木业科技有限公司 A kind of formaldehydeless wood grain masking agent and preparation method thereof
CN107760192B (en) * 2017-10-30 2020-06-05 郑州宜康木业科技有限公司 Formaldehyde-free wood grain masking agent and preparation method thereof
CN109054705A (en) * 2018-06-22 2018-12-21 安徽索亚装饰材料有限公司 A kind of wallpaper adhesive with good wet performance
CN111139030A (en) * 2020-01-08 2020-05-12 山西大学 Enzyme modified biomacromolecule wood adhesive and preparation method thereof
CN111139030B (en) * 2020-01-08 2021-09-28 山西大学 Enzyme modified biomacromolecule wood adhesive and preparation method thereof
CN111635731A (en) * 2020-06-08 2020-09-08 山东同利环保科技有限公司 Environment-friendly density fiberboard adhesive and preparation method thereof
CN112063364A (en) * 2020-09-14 2020-12-11 郑州轻院产业技术研究院有限公司 Vegetable protein-based formaldehyde-free adhesive

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Granted publication date: 20121003

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