CN102977810A - Timber adhesive and preparation method thereof - Google Patents
Timber adhesive and preparation method thereof Download PDFInfo
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- CN102977810A CN102977810A CN2012104231025A CN201210423102A CN102977810A CN 102977810 A CN102977810 A CN 102977810A CN 2012104231025 A CN2012104231025 A CN 2012104231025A CN 201210423102 A CN201210423102 A CN 201210423102A CN 102977810 A CN102977810 A CN 102977810A
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Abstract
The invention provides a timber adhesive which comprises, by weight, 100 parts of vegetable gelatin, 80 to 160 parts of water, 10 to 15 parts of a modifier, 5 to 15 parts of borax, 0.2 to 0.4 part of polyepoxy glyceryl ether, 2 to 3 parts of glycerin, 3 to 5 parts of a filling material and 0.05 to 0.1 part of nipagin ester, wherein the vegetable gelatin is starch or dextrin, the modifier is tributyl phosphate or vinyl acetate, and the filling material is talcum powder, asbestos powder or titanium dioxide. According to the invention, the natural polymer vegetable gelatin is modified so as to prepare the formaldehyde-free adhesive, and the adhesive has the advantages of strong adhesiveness, mold forming performance and good dispersibility and overcomes the defects of low bonding strength and poor endurance of current aqueous formaldehyde-free timber adhesives.
Description
Technical field
The present invention relates to a kind of based Wood Adhesives and preparation method thereof, belong to the sizing agent technical field.
Background technology
Along with the raising of people's environmental consciousness, increasing people begins to pay close attention to the pollution problem that house ornamentation brings, and wherein direct relation people health is exactly that indoor formaldehyde discharges.Formaldehyde extensively is present in paint and the furniture, the harm that people is brought for fear of formaldehyde, a lot of people parents look in the selection solid wood furniture, yet China's Forest Resources is deficient, timber lacks, and it is significant to substitute timber with preparation wood-based plates such as small diameter grade juggle, brush wood, wood machining residues.Requisitely in the course of processing of wood-based plate to use a large amount of based Wood Adhesives, the sizing agent that timber industry is used mainly is " three urea formaldehydes ", be urea-formaldehyde resin, resol and melamine-formaldehyde resin adhesive, wherein urea-formaldehyde resin sticks agent Diazolidinyl Urea, serious harm people's health.Therefore development of new formaldehyde-free wood sizing agent is thoroughly eliminated formaldehyde to the pollution of environment, becomes active demand and the challenge of based Wood Adhesives industry development.At present a large amount of research concentrates in the exploitation of formaldehyde-free wood sizing agent, for example CN201210102130 " a kind of water-soluble formaldehyde-free wood sizing agent and preparation method thereof ", CN201010507669.1 " a kind of water-based polymer adhesive preparation method and application ", water-soluble gluing agent is take water as primary solvent, safety and environmental protection, but ubiquity poor durability, under high humidity, can cause for a long time the defectives such as the deteriorated splicing degree that causes descends, and storage time is short, and set time is long.
Summary of the invention
The purpose of this invention is to provide a kind of based Wood Adhesives, natural polymer is carried out modification obtain formaldehydeless sizing agent, it is low to overcome present water-based formaldehyde-free wood sizing agent Joint strength, the defectives such as poor durability.
Another object of the present invention provides the preparation method of this based Wood Adhesives.
To achieve these goals, the technical solution used in the present invention is: a kind of based Wood Adhesives, include following component by weight: 100 parts of vegetable jelly, 80～160 parts in water, 10～15 parts of properties-correcting agent, 5 ~ 15 parts of boraxs, 0.2 ~ 0.4 part of poly-Synthesis of Oligo Ethylene Glycol, 2 ~ 3 parts of glycerine, 3 ~ 5 parts of fillers, 0.05 ~ 0.1 part of nipagin esters.
Described vegetable jelly is starch or dextrin.
Described properties-correcting agent is tributyl phosphate or vinyl acetate.
Described filler is talcum powder, asbestos powder or titanium dioxide.
The preparation method of described based Wood Adhesives comprises the steps:
1), the modification of vegetable jelly: vegetable jelly is mixed with water, and 50 ~ 60 ℃ of water temperatures stir and make vegetable jelly wetting, then add properties-correcting agent, between 5.5 ~ 6.5, are heated to 60 ~ 80 ℃ with acid for adjusting pH value, stir 2 ~ 3h, obtain translucent modified plant gum;
2), the preparation of sizing agent: with step 1) modified plant gum that obtains at room temperature mixes with borax, glycerine, poly-Synthesis of Oligo Ethylene Glycol, filler, nipagin esters, is heated to 85 ~ 95 ℃ and stirs 30 ~ 60min, is cooled to 45 ℃ with bottom discharge.
Step 1) regulating the acid that pH uses is phosphoric acid or acetic acid.
Based Wood Adhesives provided by the invention, the natural polymer vegetable jelly is carried out preparing formaldehydeless sizing agent after the modification, have the advantage that binding property is strong, become model and good dispersity, it is low to overcome present water-based formaldehyde-free wood sizing agent Joint strength, the defectives such as poor durability.
Embodiment
Embodiment 1:
A kind of based Wood Adhesives includes following component by weight: 100 parts of starch, 80 parts in water, 15 parts of vinyl acetates, 5 parts of boraxs, 0.4 part of poly-Synthesis of Oligo Ethylene Glycol, 2 parts of glycerine, 5 parts of talcum powder, 0.05 part of nipagin esters.
Starch is mixed with water, and 50 ℃ of water temperatures stir wettingly, then add vinyl acetate, are 6 with the phosphorus acid for adjusting pH value, are heated to 60 ℃, stir 3h, obtain translucent modified plant gum; Then at room temperature mix with borax, glycerine, poly-Synthesis of Oligo Ethylene Glycol, talcum powder, nipagin esters, be heated to 95 ℃ and stir 30min, be cooled to 45 ℃ with bottom discharge.The sizing agent solid content that obtains is 35% ~ 45%, and viscosity is 2.2Pas, pressing plate test bonding strength average out to 1.48 MPa.
Embodiment 2:
A kind of based Wood Adhesives includes following component by weight: 100 parts in dextrin, 160 parts in water, 10 parts of tributyl phosphates, 15 parts of boraxs, 0.2 part of poly-Synthesis of Oligo Ethylene Glycol, 3 parts of glycerine, 3 parts of asbestos powders, 0.1 part of nipagin esters.
Dextrin is mixed with water, and 60 ℃ of water temperatures stir wettingly, then add tributyl phosphate, are 6 with the phosphorus acid for adjusting pH value, are heated to 80 ℃, stir 2h, obtain translucent modified plant gum; Then at room temperature mix with borax, glycerine, poly-Synthesis of Oligo Ethylene Glycol, asbestos powder, nipagin esters, be heated to 85 ℃ and stir 60min, be cooled to 45 ℃ with bottom discharge.The sizing agent solid content that obtains is 35% ~ 45%, and viscosity is 2.5Pas, pressing plate test bonding strength average out to 1.54 MPa.
Claims (6)
1. based Wood Adhesives, include following component by weight: 100 parts of vegetable jelly, 80～160 parts in water, 10～15 parts of properties-correcting agent, 5 ~ 15 parts of boraxs, 0.2 ~ 0.4 part of poly-Synthesis of Oligo Ethylene Glycol, 2 ~ 3 parts of glycerine, 3 ~ 5 parts of fillers, 0.05 ~ 0.1 part of nipagin esters.
2. based Wood Adhesives according to claim 1, it is characterized in that: described vegetable jelly is starch or dextrin.
3. based Wood Adhesives according to claim 1, it is characterized in that: described properties-correcting agent is tributyl phosphate or vinyl acetate.
4. based Wood Adhesives according to claim 1, it is characterized in that: described filler is talcum powder, asbestos powder or titanium dioxide.
5. the preparation method of the described based Wood Adhesives of claim 1 is characterized in that comprising the steps:
1), the modification of vegetable jelly: vegetable jelly is mixed with water, and 50 ~ 60 ℃ of water temperatures stir and make vegetable jelly wetting, then add properties-correcting agent, between 5.5 ~ 6.5, are heated to 60 ~ 80 ℃ with acid for adjusting pH value, stir 2 ~ 3h, obtain translucent modified plant gum;
2), the preparation of sizing agent: with step 1) modified plant gum that obtains at room temperature mixes with borax, glycerine, poly-Synthesis of Oligo Ethylene Glycol, filler, nipagin esters, is heated to 85 ~ 95 ℃ and stirs 30 ~ 60min, is cooled to 45 ℃ with bottom discharge.
6. the preparation method of based Wood Adhesives according to claim 5 is characterized in that: step 1) to regulate the acid that pH uses be phosphoric acid or acetic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210423102.5A CN102977810B (en) | 2012-10-30 | 2012-10-30 | A kind of based Wood Adhesives and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210423102.5A CN102977810B (en) | 2012-10-30 | 2012-10-30 | A kind of based Wood Adhesives and preparation method thereof |
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| CN102977810A true CN102977810A (en) | 2013-03-20 |
| CN102977810B CN102977810B (en) | 2015-11-25 |
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| CN201210423102.5A Active CN102977810B (en) | 2012-10-30 | 2012-10-30 | A kind of based Wood Adhesives and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497451A (en) * | 2016-11-26 | 2017-03-15 | 王静龙 | A kind of furniture Formaldehyde-free adhesive and preparation method thereof |
| CN106520015A (en) * | 2016-11-26 | 2017-03-22 | 王静龙 | High-strength non-formaldehyde adhesive used for furniture, and preparation method thereof |
| CN107083208A (en) * | 2017-05-08 | 2017-08-22 | 贵港市鑫宏木业有限公司 | The special viscose glue mixture of wood plywood |
| CN107177326A (en) * | 2017-05-08 | 2017-09-19 | 贵港市鑫宏木业有限公司 | The special viscose glue mixture of bamboo plywood |
| CN109593488A (en) * | 2018-12-20 | 2019-04-09 | 成都玉龙化工有限公司 | A kind of environment-protective adhesive preparation method |
| CN112048246A (en) * | 2020-09-02 | 2020-12-08 | 阜南县锐发工艺品有限公司 | Weather-resistant formaldehyde-free wood adhesive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234493A (en) * | 2010-04-21 | 2011-11-09 | 王钱生 | Plant composite adhesive for man-made board and preparation method thereof |
| CN102443362A (en) * | 2010-10-15 | 2012-05-09 | 南通玺路贸易有限公司 | Novel paper product glue and preparation method thereof |
-
2012
- 2012-10-30 CN CN201210423102.5A patent/CN102977810B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234493A (en) * | 2010-04-21 | 2011-11-09 | 王钱生 | Plant composite adhesive for man-made board and preparation method thereof |
| CN102443362A (en) * | 2010-10-15 | 2012-05-09 | 南通玺路贸易有限公司 | Novel paper product glue and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497451A (en) * | 2016-11-26 | 2017-03-15 | 王静龙 | A kind of furniture Formaldehyde-free adhesive and preparation method thereof |
| CN106520015A (en) * | 2016-11-26 | 2017-03-22 | 王静龙 | High-strength non-formaldehyde adhesive used for furniture, and preparation method thereof |
| CN107083208A (en) * | 2017-05-08 | 2017-08-22 | 贵港市鑫宏木业有限公司 | The special viscose glue mixture of wood plywood |
| CN107177326A (en) * | 2017-05-08 | 2017-09-19 | 贵港市鑫宏木业有限公司 | The special viscose glue mixture of bamboo plywood |
| CN109593488A (en) * | 2018-12-20 | 2019-04-09 | 成都玉龙化工有限公司 | A kind of environment-protective adhesive preparation method |
| CN112048246A (en) * | 2020-09-02 | 2020-12-08 | 阜南县锐发工艺品有限公司 | Weather-resistant formaldehyde-free wood adhesive |
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| Publication number | Publication date |
|---|---|
| CN102977810B (en) | 2015-11-25 |
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