CN101899280A - Method for preparing compound modified peanut protein adhesive - Google Patents
Method for preparing compound modified peanut protein adhesive Download PDFInfo
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- CN101899280A CN101899280A CN 201010239669 CN201010239669A CN101899280A CN 101899280 A CN101899280 A CN 101899280A CN 201010239669 CN201010239669 CN 201010239669 CN 201010239669 A CN201010239669 A CN 201010239669A CN 101899280 A CN101899280 A CN 101899280A
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Abstract
The invention discloses a method for preparing a compound modified peanut protein adhesive. The method comprises the following step of: adding calcium hydroxide and/or sodium dodecyl benzene sulfonate and/or urea serving as a modifier into peanut protein powder serving as a raw material respectively to obtain the peanut protein adhesive. Compared with the conventional trialdehyde adhesive, the adhesive has the advantages of no emission of formaldehyde, higher bonding strength, environmental friendliness and better social and environmental benefits.
Description
Technical field
The present invention relates to a kind of preparation method of compound modified peanut protein adhesive.Belong to field of chemical technology.
Background technology
Along with the high speed development of China's real estate, decorative craft of building, furniture manufacturing industry and the significantly raising of living standards of the people, wood-based panel industry develops rapidly, wood adhesive consumption and year sharp increase, wherein " three aldehyde " glue has occupied more than 80% of wood adhesive ultimate production.
Using more formaldehyde at present is that tackiness agent has a fatal defective, because one of its main raw material is a formaldehyde, in production process and use, discharge obnoxious flavoures such as free formaldehyde inevitably with its glued wood working product, thereby the dangerous products producer and products customers is healthy.Long-term contact low dosage formaldehyde can cause chronic respiratory tract disease, cause nasopharyngeal carcinoma, colorectal carcinoma, brain tumor, menoxenia, nuclear transgenation, in the dna single chain commissure and DNA and protein commissure and suppress dna damage reparation, pregnancy syndrome, cause neonatal chromosome disorder, leukemia, cause the decline of teenager's memory and intelligence.In all contactees, children and pregnant woman's PARA FORMALDEHYDE PRILLS(91,95) are particularly responsive, and harm is also just bigger.The more Gao Shike vomiting that causes nausea of concentration, it is uncomfortable in chest to cough, asthma, pulmonary edema even causing death immediately.
Simultaneously, these sizing agent great majority that now use are to be base-material with petroleum derivative, and along with global petroleum resources are in short supply, it is in short supply that the base-material of these sizing agents also can become.
Thereby people more and more tend to use the aldehyde-free cement of toxicological harmless, renewable source production.The natural reproducible material that is usually used in synthetic adhesive mainly contains: polysaccharose substances such as lignin, tannin, protein and starch, chitosan wherein are again main flow with the protein adhesive.
Vegetable-protein has inexpensive and measures wide, easy handling (having lower viscosity), can be used for hot pressing and cold pressing, advantage such as be difficult for coming unstuck under the humidity of 20-35%, but it is relative with water resisting property relatively poor with the tackiness agent bonding strength that natural plant protein is made, lack antimicrobial ability, still can not reach the standard of industrial application well.Therefore, necessary vegetable-protein is carried out modification,, satisfy the needs of using to improve characteristics such as its bonding strength of making tackiness agent and water resisting property.
Vegetable-protein is carried out modification; to improve its bonding property; the report of the vegetable-protein sizing agent of preparation modification has a lot; US6497760 utilizes various organic salts; comprise synthetic rubber made from soybean cakes such as urea, chlorination guanidine and long carbochain sulfonate; its ultimate principle is to utilize these organic salts that soybean protein molecule full extension is unlikely to destroy protein molecular, unlike divide period of the day from 11 p.m. to 1 a.m albumen regular meeting to be hydrolyzed with the alkali extensin.Be used for being used as the timber sizing agent though their this patent rubber made from soybean cake is absorbed in, because its prescription uses the soybean protein of high price, and it is deadlocked not water-fast yet, does not therefore have very big contribution.
US5371194 describe utilize soyflour at high temperature (～200 ℃) down because poly candy and albumen produce the sizing agent that resin that amination forms a kind of thermohardening type is used as coal ash, still this sizing agent is used as the then no record of performance of timber sizing agent.
US5635123 describes mold pressing glue (molding compound) and its usage of utilizing soyflour to make in detail.This mold pressing glue is crosslinked mutually at the aqueous solution with the albumen in 12% isocyanate adhesive and the soyflour, be ground into fine powder after dry, this mold pressing glue and fiber mixed, be placed on the compacting of mould interior heat and make the various moulding products of high-density (proportion＞1.0) during use with 40% pair 60%.
US6306997 gives hydrolysis to the albumen of defatted soyflour slightly with S-WAT earlier, uses the neutral phenolic glue of 30% low-viscosity (pH～7) crosslinked then, is made into a kind of water-fast glue.The viscosity of this glue is still higher, only is fit to be used for making glued board, if the glue of furnishing 30% solids, though can be used for making shaving board and fiberboard, because of the too high hot pressing time much longer of water content.
Guo and Stokke are crosslinked with degreasing or low fat soyflour and phenolic glue, are made into the cementing agent that a kind of low-viscosity can spray.The method for making of this glue be earlier soyflour with 8% sodium hydroxide at 140 ℃ of hydrolysis 2h, do crosslinking Treatment with 30% low-viscosity alkaline phenol formaldehyde glue down at 50 ℃ then, make solid contents and be about 45% soybean protein side aldehyde glue.
China is the plantation big country and the big producing country of peanut, is approximately 355.3 ten thousand hectares in the cultivated area of Chinese peanut, and turnout is approximately 675.7 ten thousand tons (1985).Peanut also is very wide in China's distribution simultaneously, and all there is plantation various places.The main product area is the hills, beach and the sandy soil district of Shandong, east, Liaoning, the Lezhou Peninsula, Guangdong, area, the Yellow River and Huai He River river and southeastern coast.Wherein the Shandong Province accounts for the whole nation and produces 1/4 of area, 1/3 of ultimate production.
Owing to have abundant peanut resource in China, we should these resources be fully utilized, and as the importance that peanut fully utilizes, will develop and develop the comprehensive utilization degree of Semen arachidis hypogaeae protein exactly energetically.The present invention will improve the Semen arachidis hypogaeae protein added value with Semen arachidis hypogaeae protein exploitation wood adhesive.
Summary of the invention
The invention provides a kind of preparation method of compound modified peanut protein adhesive, this sizing agent is compared with the glutinous agent of traditional three-aldehyde glue, its outstanding characteristics are, this sizing agent does not have the discharging of formaldehyde, has consolidation strength preferably simultaneously, be a kind of eco-friendly sizing agent, have good social and environmental benefit.
The present invention realizes by the following method:
A kind of preparation method of compound modified peanut protein adhesive is a raw material with peanut protein powder, adds properties-correcting agent calcium hydroxide and/or Sodium dodecylbenzene sulfonate and/or urea respectively, obtains peanut protein adhesive.
The water that adds 3～8 mass parts in reactor adds the peanut protein powder of 1 mass parts while stirring, forms uniform peanut protein powder slurries, slowly splashes into 0.5～2 mass parts mass percentage concentration and be 10～15% strong base solution.Stirred 10～40 minutes, and added the properties-correcting agent Sodium dodecylbenzene sulfonate of 0～0.5 mass parts.Stirred 10～40 minutes, and added the properties-correcting agent urea of 0～1 mass parts.Stirred 10～60 minutes, and added the pulverous calcium hydroxide of 0.01～1 mass parts, slurries are stirred promptly obtains peanut protein adhesive.Get 1g and be coated on the China fir plate, surface covered is 65mm * 40mm, and two planks compress back seasoning 24h, test its Joint strength.After glueing joint seasoning 24h, soak 24h under the room temperature in tap water, dry air 24h at room temperature tests its water-fast Joint strength then.
Above-mentioned strong base solution is sodium hydroxide or potassium hydroxide solution.
Beneficial effect of the present invention:
1. the formaldehyde emission of Zhi Bei peanut protein adhesive is 0, reaches international E0 level level.
2. by after the modification, the peanut protein adhesive of preparation has bonding capacity preferably.
3. this sizing agent has water resistance preferably, can use under the environment of humidity.
Embodiment
Embodiment 1
In reactor, add 3kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 0.5kg mass percentage concentration and be 10% sodium hydroxide solution.Stirred 60 minutes, and added 0.01kg powdery calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 0.9342MPa.Water-fast Joint strength is 0.1039MPa.
Embodiment 2
In reactor, add 3kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 1kg mass percentage concentration and be 10% potassium hydroxide solution.Stirred 10 minutes, and added the Sodium dodecylbenzene sulfonate of 0.2kg.Stirred 10 minutes, and added the urea of 0.5kg.Stirred 30 minutes, and added 0.1kg calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its consolidation strength is 1.968MPa.Water-fast consolidation strength is 0.5142MPa.
Embodiment 3
In reaction vessel, add 5kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 1kg mass percentage concentration and be 15% sodium hydroxide solution.Stirred 25 minutes, and added the Sodium dodecylbenzene sulfonate of 0.2kg.Stirred 30 minutes, and added the urea of 1kg, stirred 10 minutes, add 1kg calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 2.301MPa.Water-fast Joint strength is 0.5236MPa.
Embodiment 4
In reactor, add 3kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 2kg mass percentage concentration and be 15% sodium hydroxide solution.Stirred 25 minutes, and added the urea of 0.5kg, stirred 30 minutes, add 1.0kg powdered calcium hydroxide at last, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 1.701MPa.Water-fast Joint strength is 0.3651MPa.
Embodiment 5
Add 5kg water in the reaction vessel, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 0.5kg mass percentage concentration and be 12% sodium hydroxide solution.Stir after 25 minutes, add the Sodium dodecylbenzene sulfonate of 0.2kg.Stir after 25 minutes, add 1.0kg urea, stirred 30 minutes, add 1.0kg calcium hydroxide at last, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 2.216MPa.Water-fast Joint strength is 05396MPa.
Embodiment 6
In reactor, add 5kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 0.5kg mass percentage concentration and be 12% sodium hydroxide solution.Stirred 40 minutes, and added the 0.5kg Sodium dodecylbenzene sulfonate.Stirred 30 minutes, and added 0.1kg powdery calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 1.589MPa.Water-fast Joint strength is 0.5734MPa.
Embodiment 7
In reactor, add 8kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 1kg mass percentage concentration and be 15% sodium hydroxide solution.Stirred 40 minutes, and added 1.0kg urea, stirred 30 minutes, add 0.1kg powdery calcium hydroxide at last, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 1.901MPa.Water-fast Joint strength is 0.3998MPa.
Embodiment 8
Add 5kg water in the reaction vessel, stirring state limit, limit adds the peanut protein powder of 1kg, makes to form uniform peanut protein powder slurries, slowly splashes into the 2kg mass percentage concentration and be 12% sodium hydroxide solution.Stirred 30 minutes, and added the 0.2kg Sodium dodecylbenzene sulfonate.Stirred 30 minutes, and added 1.0kg calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 2.332MPa.Water-fast Joint strength is 0.4933MPa.
Embodiment 9
In reactor, add 8kg water, add the peanut protein powder of 1kg while stirring, make to form uniform peanut protein powder slurries, slowly splash into the 2kg mass percentage concentration and be 15% sodium hydroxide solution.Stirred 25 minutes, and added the 0.5kg Sodium dodecylbenzene sulfonate.Stirred 25 minutes, and added 1.0kg urea, stirred 30 minutes, add 0.1kg powdery calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.Its Joint strength is 1.813MPa.Water-fast Joint strength is 0.7651MPa.
Claims (3)
1. the preparation method of a compound modified peanut protein adhesive is characterized in that with peanut protein powder be raw material, adds properties-correcting agent calcium hydroxide and/or Sodium dodecylbenzene sulfonate and/or urea respectively, obtains peanut protein adhesive.
2. according to the described preparation method of claim 1, it is characterized in that: its step is the water that adds 3～8 mass parts in reactor, the peanut protein powder that adds 1 mass parts while stirring, form uniform peanut protein powder slurries, slowly splash into 0.5～2 mass parts mass percentage concentration and be 10～15% strong base solution; Behind the stirring reaction 10～40 minutes, add the properties-correcting agent Sodium dodecylbenzene sulfonate of 0～0.5 mass parts; Behind the stirring reaction 10～40 minutes, add the properties-correcting agent urea of 0～1 mass parts; Behind the stirring reaction 10～60 minutes, add 0.01～1 mass parts powdery calcium hydroxide, slurries are stirred promptly obtains peanut protein adhesive.
3. preparation method according to claim 2 is characterized in that: described strong base solution is sodium hydroxide solution or potassium hydroxide solution.
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| CN 201010239669 CN101899280A (en) | 2010-07-27 | 2010-07-27 | Method for preparing compound modified peanut protein adhesive |
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| CN 201010239669 CN101899280A (en) | 2010-07-27 | 2010-07-27 | Method for preparing compound modified peanut protein adhesive |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000008110A1 (en) * | 1998-08-07 | 2000-02-17 | Kansas State University Research Foundation | Modified soy protein adhesives |
| CN101319131A (en) * | 2008-07-23 | 2008-12-10 | 上海世鹏聚氨酯科技发展有限公司 | Non-methanal environment-friendly type plant protein modified adhesion agent |
| CN101412899A (en) * | 2008-02-18 | 2009-04-22 | 河南新鼎科技发展有限公司 | Completely degradable plant protein wood adhesive and preparation thereof |
| CN101629019A (en) * | 2009-01-21 | 2010-01-20 | 郑州佰沃生物质材料有限公司 | Basic biomass synthetic resin and preparation method and application thereof |
-
2010
- 2010-07-27 CN CN 201010239669 patent/CN101899280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000008110A1 (en) * | 1998-08-07 | 2000-02-17 | Kansas State University Research Foundation | Modified soy protein adhesives |
| CN101412899A (en) * | 2008-02-18 | 2009-04-22 | 河南新鼎科技发展有限公司 | Completely degradable plant protein wood adhesive and preparation thereof |
| CN101319131A (en) * | 2008-07-23 | 2008-12-10 | 上海世鹏聚氨酯科技发展有限公司 | Non-methanal environment-friendly type plant protein modified adhesion agent |
| CN101629019A (en) * | 2009-01-21 | 2010-01-20 | 郑州佰沃生物质材料有限公司 | Basic biomass synthetic resin and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《JOCAS》 19951231 N.S. Hettiarachchy et al. "Alkali-Modified Soy Protein with Improved Adhesive and Hydrophobic Properties" 1461-1464 1-3 第72卷, 第12期 2 * |
| 《JOCAS》 20001231 Weining Huang et al. "Adhesive Properties of Soy Proteins Modified by Sodium Dodecyl Sulfate and Sodium Dodecylbenzene Sulfonate" 705-708 1-3 第77卷, 第7期 2 * |
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Open date: 20101201 |