CN101851477B - Method for preparing bamboo plate adhesive - Google Patents
Method for preparing bamboo plate adhesive Download PDFInfo
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- CN101851477B CN101851477B CN2010101731716A CN201010173171A CN101851477B CN 101851477 B CN101851477 B CN 101851477B CN 2010101731716 A CN2010101731716 A CN 2010101731716A CN 201010173171 A CN201010173171 A CN 201010173171A CN 101851477 B CN101851477 B CN 101851477B
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Abstract
The invention discloses a method for preparing bamboo plate adhesive. The method comprises the following: 1), a step of preparing nano seeds, in which organic nano SiO2 is dissolved in water first, then a modifying material is added into the mixed solution, next water is added into the mixture, and finally the mixed product is heated and stirred to obtain the nano seeds; 2), a step of stirring and blending the water, the nano seeds, mixed monomer I, methacrylic acid, 28 to 33 volume percent ammonia water and initiator at the temperature of between 55 and 85 DEG C, adding mixed monomer II intothe mixed solution and continuously stirring the mixed product to obtain primary adhesive; and 3), a step of adding adjuvant into the primary adhesive with stirring and stirring the mixture at the temperature of between 60 and 80 DEG C to obtain the bamboo plate adhesive. The bamboo plate adhesive prepared by adopting the method has the characteristics of environmental-friendliness and high cohesiveness.
Description
Technical field
The present invention relates to a kind of single high molecular synthetic method of organic/inorganic compounding of disperseing, relate in particular to a kind of preparation method of bamboo plate adhesive, this kind bamboo plate adhesive can be used for preparing high-grade bamboo plate.
Background technology
The glue kind that bamboo mat plywood is commonly used is Phenol aldehyde resin and urea-formaldehyde resin adhesive.Phenol aldehyde resin water tolerance and ageing-resistant performance are better, but cost height, color are dark, influence plate face quality.Urea-formaldehyde resin adhesive water tolerance and ageing-resistant performance are not as good as phenolic glue, but urea-formaldehyde resin is with low cost, of light color, hardness is high, oil resistant, anti-mildew, good insulation and temperature tolerance are arranged, range of application is very extensive, but urea-formaldehyde resin easily absorbs water, thereby water tolerance is relatively poor, thermotolerance is not high yet, and its burst size of methanal directly has influence on the environmental protection standard of bamboo product.
The timber glue paste that the various wood-based plates of domestic production at present use contains formaldehyde, and its slow time of releasing is the longest to reach 15 years.Formaldehyde is more highly toxic material, is defined as carcinogenic and teratogenesis shape material by the World Health Organization.Long-term contact low dosage formaldehyde can cause chronic respiratory tract disease, easily causes transgenation, causes newborn infant's chromosomal variation, cases with leukemia etc.
Summary of the invention
The technical problem to be solved in the present invention provides the preparation method of a kind of environmental protection, bamboo plate adhesive that cohesiveness is strong.
In order to solve the problems of the technologies described above, the invention provides a kind of preparation method of bamboo plate adhesive, may further comprise the steps:
1), preparation nanometer seed:
Earlier with inorganic nano SiO
2Soluble in water, slowly (25～50mL/h) add decorative material, then add entry again, at last at 60～100 ℃ of following heated and stirred 0.5～2h, get the nanometer seed under agitation condition then; Decorative material be hydroxyl organic polymer, hydroxyl inorganic oxide or for containing organic polymer of a plurality of carboxyls;
Decorative material and inorganic nano SiO
2Weight ratio be 0.5～5: 100,2 used water and inorganic nano SiO
2Weight ratio be 100: 10～25;
2), in 55～85 ℃ with the ammoniacal liquor of water, nanometer seed, mix monomer I, methacrylic acid, volumetric concentration 28%～33% and initiator according to 100～120: 24～26: 44～46: 4.5～5.5: 4.5～5.5: 0.3～1.5 weight ratio mixes, mixed solution; Add the mix monomer II that accounts for 0.6～1 times of mixed solution gross weight then, continue to stir 0.5～5 hour, get preliminary viscose glue in 60～90 ℃;
3), under agitation condition, in preliminary viscose glue, add auxiliary agent, stirred 0.5～1 hour in 60～80 ℃, bamboo plate adhesive; Auxiliary agent is 0.5%～5% with the weight ratio of preliminary viscose glue.
Improvement as the preparation method of bamboo plate adhesive of the present invention: the organic polymer of hydroxyl can be selected polyvinyl alcohol, polyoxyethylene glycol, polyester diol, polyether Glycols for use, the inorganic oxide of hydroxyl can be selected polyphosphoric acid salt, ester, silicon ester, phthalate for use, and the organic polymer that contains a plurality of carboxyls can be selected polyacrylic acid/methacrylic acid, poly-adipic anhydride for use, contain carboxy(l)polyester.
Further improvement as the preparation method of bamboo plate adhesive of the present invention: mix monomer I is the mixture of methyl methacrylate and butyl methacrylate, perhaps is methyl methacrylate, butyl methacrylate and cinnamic mixture.
Further improvement as the preparation method of bamboo plate adhesive of the present invention: mix monomer II is the mixture of vinylbenzene, methyl methacrylate and butyl methacrylate.
Further improvement as the preparation method of bamboo plate adhesive of the present invention: initiator is ammonium persulphate, Potassium Persulphate or hydrogen peroxide.
Further improvement as the preparation method of bamboo plate adhesive of the present invention: auxiliary agent is silicon ester, phthalate or contains epoxy radicals silicone hydride.
Further improvement as the preparation method of bamboo plate adhesive of the present invention: the particle diameter of inorganic nano SiO2 is 5～20nm.
The preparation method of nano combined viscose glue of the present invention has following advantage:
1, synthesis phase of the present invention does not need to add emulsifying agent, and is synthetic in aqueous media fully, do not need solvent, do not contain harmful materials such as benzene, formaldehyde, AEPO; Therefore the nano combined viscose glue (bamboo plate adhesive) that adopts the inventive method preparation and get belongs to a kind of novel water dispersible viscose glue; Glue paste for super quality and competitive price, Environmental Safety.
Detect according to 6.3 regulation among the GB 18580-2001, the result presses that 6.2.2 calculates among the GB 18580-2001, and bamboo plate adhesive burst size of methanal of the present invention is 0.And above-mentioned under the similar detection method, the burst size of methanal of urea-formaldehyde resin is 1.2mg/100g.
2, the finished product of the bamboo plate adhesive of gained of the present invention is water white transparency, and is of light color, can not influence bamboo plywood plate face quality during actual the use.
3, bonding strength, MOR,
Detect according to GB/T 20240-2006, its bonding strength can reach 4.22MPa, and MOR can reach 111.9MPa.And under the similar detection method, the bonding strength of urea-formaldehyde resin adhesive is 3.83MPa, and MOR is 103MPa.
During the actual use of bamboo plate adhesive of the present invention, smear equably between 2 blocks of bamboo plates that need the equal size of adherent, the consumption of bamboo plate adhesive is generally 0.3～0.6 Kilograms Per Square Meter (referring to the bamboo plate of monolithic).
Embodiment
Describe the preferred embodiments of the present invention below in detail.
The preparation method of embodiment 1, a kind of bamboo plate adhesive, carry out following steps successively:
1), preparation nanometer seed:
Directly be the inorganic nano SiO of 5～20nm with 80 gram particles earlier
2Be dissolved in 200 milliliters the water; Under agitation condition, in 1 hour, add 25 milliliters of TiCl then
4(TiCl
4Hydrolysis obtains corresponding phthalate), add 300 ml waters again, then at 100 ℃ of following heated and stirred 1h, thereby obtain the stabilized nano seed.
2), under 65 ℃ with ammoniacal liquor, the aqueous hydrogen peroxide solution of 10 grams 3% (mass concentration), 5 gram methacrylic acids, 45 gram mix monomer I (methyl methacrylate, butyl methacrylate 2: 1 the weight ratio) mixing and stirring of 25 gram nanometer seeds with 100 gram water, 5 gram volumetric concentrations 30%, get mixed solution; Under agitation condition, 186 gram mix monomer II (vinylbenzene, methyl methacrylate, 1: 1: 1 weight ratio of butyl methacrylate) are added then, reacted 3 hours down at 70 ℃ with 2 hours; Obtain preliminary viscose glue.
3), get preliminary viscose glue 200 grams add 4 gram mass concentration 50% under agitation condition silane coupling agent ethanolic soln (2g silane coupling agent and 2g ethanol mixing back gained, the model of silane coupling agent is DL602), in 75 ℃ of stirrings 0.5 hour, obtain the good bamboo plate adhesive of adhesiveproperties.
The bonding strength 4.01MPa of this bamboo plate adhesive, MOR 105.1MPa.Burst size of methanal is 0mg/100g.
The preparation method of embodiment 2, a kind of bamboo plate adhesive,
Changed the weight ratio of the vinylbenzene among the 186 gram mix monomer II, methyl methacrylate, butyl methacrylate into 3: 3: 2 by 1: 1: 1, all the other are with embodiment 1.
Gained bamboo plate adhesive bonding strength 3.97MPa, MOR 127MPa.Burst size of methanal is 0mg/100g.
The preparation method of embodiment 3, a kind of bamboo plate adhesive,
Change the aqueous hydrogen peroxide solution of 10 grams 3% (mass concentration) into 15 gram 10% (mass concentration) persulfate aqueous solutions; All the other are with embodiment 1.
Gained bamboo plate adhesive bonding strength 4.22MPa, MOR 111.9MPa.Burst size of methanal is 0mg/100g.
The preparation method of embodiment 4, a kind of bamboo plate adhesive,
Make 45 gram mix monomer I (methyl methacrylate, 2: 1 weight ratio of butyl methacrylate) into 45 gram mix monomer I (methyl methacrylate, butyl methacrylate, vinylbenzene are 15: 10: 3 weight ratio); All the other are with embodiment 1.
Gained bamboo plate adhesive bonding strength 4.34MPa, MOR 108MPa.Burst size of methanal is 0mg/100g.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (4)
1. the preparation method of a bamboo plate adhesive is characterized in that may further comprise the steps:
1), preparation nanometer seed:
Earlier with inorganic nano SiO
2Soluble in water, under agitation condition, slowly add decorative material then, then add entry again, at last at 60～100 ℃ of following heated and stirred 0.5～2h, get the nanometer seed; Described decorative material is the inorganic oxide of hydroxyl, and the inorganic oxide of described hydroxyl is silicon ester or phthalate;
Decorative material and inorganic nano SiO
2Weight ratio be 0.5～5: 100,2 used water and inorganic nano SiO
2Weight ratio be 100: 10～25;
2), in 55～85 ℃ with the ammoniacal liquor of water, nanometer seed, mix monomer I, methacrylic acid, volumetric concentration 28%～33% and initiator according to 100～120: 24～26: 44～46: 4.5～5.5: 4.5～5.5: 0.3～1.5 weight ratio mixes, mixed solution; Add the mix monomer II that accounts for 0.6～1 times of mixed solution gross weight then, continue to stir 0.5～5 hour, get preliminary viscose glue in 60～90 ℃;
Described mix monomer I is the mixture of methyl methacrylate and butyl methacrylate, perhaps is methyl methacrylate, butyl methacrylate and cinnamic mixture; Described mix monomer II is the mixture of vinylbenzene, methyl methacrylate and butyl methacrylate;
3), under agitation condition, in preliminary viscose glue, add auxiliary agent, stirred 0.5～1 hour in 60～80 ℃, bamboo plate adhesive; Described auxiliary agent is 0.5%～5% with the weight ratio of preliminary viscose glue.
2. the preparation method of bamboo plate adhesive according to claim 1, it is characterized in that: described initiator is ammonium persulphate, Potassium Persulphate or hydrogen peroxide.
3. the preparation method of bamboo plate adhesive according to claim 2, it is characterized in that: described auxiliary agent is silicon ester, phthalate or contains epoxy radicals silicone hydride.
4. the preparation method of bamboo plate adhesive according to claim 3 is characterized in that: described inorganic nano SiO
2Particle diameter be 5～20nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101731716A CN101851477B (en) | 2010-05-17 | 2010-05-17 | Method for preparing bamboo plate adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101731716A CN101851477B (en) | 2010-05-17 | 2010-05-17 | Method for preparing bamboo plate adhesive |
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| CN101851477A CN101851477A (en) | 2010-10-06 |
| CN101851477B true CN101851477B (en) | 2011-12-28 |
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| CN2010101731716A Active CN101851477B (en) | 2010-05-17 | 2010-05-17 | Method for preparing bamboo plate adhesive |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002061874A1 (en) * | 2001-01-31 | 2002-08-08 | Korea Institute Of Science And Technology | A multi-layered, uv-cured polymer electrolyte and lithium secondary battery comprising the same |
| CN1944480A (en) * | 2006-10-24 | 2007-04-11 | 河北工业大学 | Process for preparing poly acrylate composite emulsion for pressure sensitive adhesive |
| CN101362916A (en) * | 2008-09-25 | 2009-02-11 | 江苏科技大学 | Inorganic nano particle modified building emulsion and preparation method thereof |
-
2010
- 2010-05-17 CN CN2010101731716A patent/CN101851477B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002061874A1 (en) * | 2001-01-31 | 2002-08-08 | Korea Institute Of Science And Technology | A multi-layered, uv-cured polymer electrolyte and lithium secondary battery comprising the same |
| CN1944480A (en) * | 2006-10-24 | 2007-04-11 | 河北工业大学 | Process for preparing poly acrylate composite emulsion for pressure sensitive adhesive |
| CN101362916A (en) * | 2008-09-25 | 2009-02-11 | 江苏科技大学 | Inorganic nano particle modified building emulsion and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘国军等.聚丙烯酸酯/纳米SiO2有机-无机复合压敏胶乳液的制备.《高分子材料科学与工程》.2007,第23卷(第2期), * |
| 陈敏等.草莓型PMMA/SiO2有机-无机复合微球的合成与表征.《高分子学报》.2006,(第6期), * |
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| CN101851477A (en) | 2010-10-06 |
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