CN102875751A - Bamboo adhesive phenolic resin synthetic technology - Google Patents
Bamboo adhesive phenolic resin synthetic technology Download PDFInfo
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- CN102875751A CN102875751A CN2012103519730A CN201210351973A CN102875751A CN 102875751 A CN102875751 A CN 102875751A CN 2012103519730 A CN2012103519730 A CN 2012103519730A CN 201210351973 A CN201210351973 A CN 201210351973A CN 102875751 A CN102875751 A CN 102875751A
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Abstract
The invention provides a bamboo adhesive phenolic resin synthetic technology. The phenolic resin synthetic technology comprises the following raw materials by weight: 55 to 75% of formaldehyde, 20 to 25% of phenol, 3 to 7% of catalyst, and water in balancing amount; the catalyst is 8 to 12% of sodium hydroxide aqueous solution based on mass percent concentration; the raw materials are input in the mode of inputting one raw material in two batches; the material input at the first batch is of 65 to 75% of the total weight of the catalyst, and the balance is input at the second batch; the formaldehyde is input in two batches, the formaldehyde input at the first batch is of 55 to 65% of the total weight of the formaldehyde, and the balance is input at the second batch. The bamboo adhesive phenolic resin synthetic technology provided by the invention can save the energy during producing and processing; the environmental protection performance can meet the national standard; and the effective adhesive strength is not less than that of the bamboo adhesive phenolic resin of like products.
Description
Technical field
The present invention relates to the synthetic technique of a kind of bamboo wood tackiness agent resol.
Background technology
The rise and development of artificial bamboo board has promoted the saving of forest timber resource, the poor especially bamboo of the improvement of ecotope and multiple bamboo area district society, expanding economy, development along with the epoch, how to make the production of artificial bamboo board and use the new step of progressively going on new and high technology, be badly in need of the bamboo wood tackiness agent of a kind of energy-saving and environmental protection of exploitation.The bamboo wood adhesive formulation of the Zhongnan Forestry Inst. that generally adopts in the market, its proportioning causes the solidification value in its application process higher, is unfavorable for that enterprise further saves production cost.
Summary of the invention
Purpose of the present invention aims to provide a kind of can save energy, environmental-protecting performance can being up to state standards again in process of manufacture, effectively adhesive strength is not less than the bamboo wood tackiness agent resol of like product.
The objective of the invention is to realize by following manner: following evenly by weight.
The following weight percent raw material that adopts: formaldehyde 55～75%, phenol 20～25%, catalyzer 3～-7%, water surplus, more than each component sum be 100%; Described catalyzer is that mass percent concentration is 8～12% aqueous sodium hydroxide solutions; Its input mode be-feeds intake in two batches, and first drops into 65～75% of total catalyst weight, and second batch drops into surplus; The feeding mode of described formaldehyde is to feed intake in two batches 55～65% of first input formaldehyde gross weight, second batch input surplus.
Described catalyzer preferably is incorporated as and drops into 70% of catalyzer total amount for the first time, drops into 30% of catalyzer total amount for the second time.
Described formaldehyde preferably is incorporated as in process of production, and the amount that adds for the first time accounts for 60% of its formaldehyde total amount, accounts for 40% of formaldehyde total amount for the second time.
The environment-friendly highly efficient bamboo wood tackiness agent of the present invention exploitation has solved the guardian technique difficult problem of bamboo offset plate production high energy consumption, greatly reduces production cost, for realizing replacing timber and other material of construction that favourable condition is provided with bamboo wood.The present invention is by adopting Polymer Synthesizing method of design and orthogonal experiment to determine the basic components of each component, and then the basis of formation prescription carries out comprehensive performance detection experimental to basic recipe, carries out formula adjustment according to experimental result.Finally obtain all good prescriptions of every over-all properties,
The present invention is by carrying out many-sided experimental verification and contrast with China's existing bamboo wood tackiness agent (Zhongnan Forestry Inst.'s prescription that generally adopts in the market), from a plurality of angles, make product of the present invention when reducing production energy consumption, environmental-protecting performance can satisfy the national standard requirement, and its adhesive strength is not less than middle series products (seeing Table).
When using the phenolic resin adhesion bamboo offset plate that the present invention produces, because its solidification value has reduced by 20 ℃, thereby bamboo offset plate manufacturing enterprise is better than traditional technique aspect energy-conservation.Under the prerequisite that does not reduce its bonding strength, the energy consumption when having greatly reduced gummed.This subtracts consumption to industry energy conservation and has played vital effect.
Embodiment
Embodiment 1
Get catalyzer 5 grams; Phenol 22 grams, formaldehyde 65 grams, water 8 restrain for subsequent use.
Phenol 22 grams are heated to 50 ℃
Add entry 8 grams
Add catalyzer 3.5 grams
50 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 39 grams
60 ℃ of stirring reactions 50 minutes heat up
Add catalyzer 1.5 grams
70 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 26 grams
90 ℃ of stirring reactions of constant temperature obtain product after 30 minutes be bright reddish-brown.
Embodiment 2
Get catalyzer 4 grams; Phenol 23 grams, formaldehyde 70 grams, water 3 restrain for subsequent use.
Phenol 23 grams are heated to 50 ℃
Add entry 3 grams
Add catalyzer 2.8 grams
50 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 42 grams
60 ℃ of stirring reactions 50 minutes heat up
Add catalyzer 1.2 grams
70 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 28 grams
90 ℃ of stirring reactions of constant temperature obtain product after 30 minutes be bright reddish-brown.
Embodiment 3
Get catalyzer 4.5 grams; Phenol 24 grams, formaldehyde 68 grams, water 3.5 restrain for subsequent use.
Phenol 24 grams are heated to 50 ℃
Add entry 3.5 grams
Add catalyzer 3.15 grams
50 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 40.8 grams
60 ℃ of stirring reactions 50 minutes heat up
Add catalyzer 1.35 grams
70 ℃ of stirring reactions of constant temperature 20 minutes
Add formaldehyde 27.2 grams
90 ℃ of stirring reactions of constant temperature obtain product after 30 minutes be bright reddish-brown.
Adopt the described tackiness agent of embodiment 1-3 to carry out the bond strength detection method
The bamboo wood sample pretreating
Dry bamboo chip is cut out the bamboo clappers of growth 3cm, thick 0.5cm, wide 1mc, and polish-dry-number-and the W1 that weighs;
Impregnation-naturally dry-W2 weighs;
Calculate the heavy W=W2-W1 of glue;
Calculate and overlap area/cm
2Because be to intersect vertically, and the bamboo chip width is 1cm, so the gummed area is 1cm
2Pressurized, heated is bonding
Preheating: baking oven is preheating to 90-160 ℃;
Install: at the elastic force retort stand sample-measuring spring length/cm (each length is unified) is installed;
Hot pressing: bamboo chip is compressed in the rearmounted baking oven at 90-160 ℃ of lower heating 30-50min, cool to room temperature after taking out.
Pulling experiment
The above-mentioned bamboo chip of making is measured the pulling force/Kg when bamboo wood sample adhesive face is broken at tensiometer
Calculate
Kg/cm
2g
According to above-mentioned experiment, finally obtain the best pulling force under the best gummed temperature.
Table one:
Annotate: the national standard of bamboo offset plate formaldehyde content is: be not more than 5.mg/m
3, the content of raw material phenol is: 99%, and the content of raw material formaldehyde is 37%;
Catalyzer is 10% the aqueous solution that 96% NaOH is made into.
Claims (3)
1. bamboo wood tackiness agent resol synthesis technique is characterized in that: the following weight percent raw material that adopts: formaldehyde 55～75%, phenol 20～25%, catalyzer 3～7%, water surplus, more than each component sum be 100%; Described catalyzer is that mass percent concentration is 8～12% aqueous sodium hydroxide solutions; Its input mode be-feeds intake in two batches, and first drops into 65～75% of total catalyst weight, and second batch drops into surplus; The feeding mode of described formaldehyde is to feed intake in two batches 55～65% of first input formaldehyde gross weight, second batch input surplus.
2. technique according to claim 1 is characterized in that, described catalyzer is divided into two portions and is: add 70% of total catalyst weight for the first time, add 30% for the second time.
3. technique according to claim 2 is characterized in that, described formaldehyde also is divided into twice adding in process of production, and the amount that adds for the first time accounts for 60% of its formaldehyde total amount, accounts for 40% of formaldehyde total amount for the second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103519730A CN102875751A (en) | 2012-09-20 | 2012-09-20 | Bamboo adhesive phenolic resin synthetic technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103519730A CN102875751A (en) | 2012-09-20 | 2012-09-20 | Bamboo adhesive phenolic resin synthetic technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102875751A true CN102875751A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103519730A Pending CN102875751A (en) | 2012-09-20 | 2012-09-20 | Bamboo adhesive phenolic resin synthetic technology |
Country Status (1)
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| CN (1) | CN102875751A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694779A (en) * | 2016-02-29 | 2016-06-22 | 北京林业大学 | Phenolic resin adhesive and preparation method and application method thereof |
| CN107283552A (en) * | 2017-08-15 | 2017-10-24 | 周健雄 | One kind makes plywood method |
| CN111087956A (en) * | 2019-12-09 | 2020-05-01 | 华南农业大学 | Modified phenolic resin adhesive and preparation method and application thereof |
| CN112662353A (en) * | 2020-12-07 | 2021-04-16 | 浙江农林大学 | Surface wetting type phenolic resin adhesive for bamboo materials such as bamboo green, bamboo yellow and the like and synthetic method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696255A (en) * | 2009-10-29 | 2010-04-21 | 中国林业科学研究院木材工业研究所 | Preparation method, application and using method for phenolic aldehyde storing liquid |
| CN101864053A (en) * | 2010-06-08 | 2010-10-20 | 中国林业科学研究院木材工业研究所 | Modified phenolic resin for bamboo structure material and preparation method thereof |
| CN102643399A (en) * | 2012-05-11 | 2012-08-22 | 南通新洋环保板业有限公司 | Preparation method of modified phenolic resin for bamboo container flooring |
-
2012
- 2012-09-20 CN CN2012103519730A patent/CN102875751A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696255A (en) * | 2009-10-29 | 2010-04-21 | 中国林业科学研究院木材工业研究所 | Preparation method, application and using method for phenolic aldehyde storing liquid |
| CN101864053A (en) * | 2010-06-08 | 2010-10-20 | 中国林业科学研究院木材工业研究所 | Modified phenolic resin for bamboo structure material and preparation method thereof |
| CN102643399A (en) * | 2012-05-11 | 2012-08-22 | 南通新洋环保板业有限公司 | Preparation method of modified phenolic resin for bamboo container flooring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694779A (en) * | 2016-02-29 | 2016-06-22 | 北京林业大学 | Phenolic resin adhesive and preparation method and application method thereof |
| CN107283552A (en) * | 2017-08-15 | 2017-10-24 | 周健雄 | One kind makes plywood method |
| CN111087956A (en) * | 2019-12-09 | 2020-05-01 | 华南农业大学 | Modified phenolic resin adhesive and preparation method and application thereof |
| CN111087956B (en) * | 2019-12-09 | 2021-12-17 | 华南农业大学 | Modified phenolic resin adhesive and preparation method and application thereof |
| CN112662353A (en) * | 2020-12-07 | 2021-04-16 | 浙江农林大学 | Surface wetting type phenolic resin adhesive for bamboo materials such as bamboo green, bamboo yellow and the like and synthetic method thereof |
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Application publication date: 20130116 |