CN102432784A - Raw material formula and preparation method of phenolic resin glue for sympodial bamboo integrated section - Google Patents
Raw material formula and preparation method of phenolic resin glue for sympodial bamboo integrated section Download PDFInfo
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- CN102432784A CN102432784A CN2011102576479A CN201110257647A CN102432784A CN 102432784 A CN102432784 A CN 102432784A CN 2011102576479 A CN2011102576479 A CN 2011102576479A CN 201110257647 A CN201110257647 A CN 201110257647A CN 102432784 A CN102432784 A CN 102432784A
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Abstract
The invention provides a raw material formula and a preparation method of phenolic resin glue for a sympodial bamboo integrated section. An adhesive suitable for the sympodial bamboo section is researched by combining structural characteristics of the sympodial bamboo. The phenolic resin glue for the sympodial bamboo integrated section is prepared by adding main formula raw materials such as formaldehyde, phenol, ethanedioic acid, anhydrous sodium sulfate, urea, oleic acid, liquid caustic soda, colophony powder and water in sub-phases and reacting at a certain temperature. The preparation method of the phenolic resin glue for the sympodial bamboo integrated section is simple. Aiming at the characteristics of the sympodial bamboo, a small amount of the colophony powder, the anhydrous sodium sulfate and the oleic acid are added in the preparation process of the phenolic resin glue so as to enhance the adhesion strength of the glue and quickly remove water in bamboo fibers; meanwhile, hardening is generated and the strength of the section is enhanced; the prepared phenolic resin glue has strong gluing capability for the sympodial bamboo, high weather resistance and low impregnating strip rate; and the utilization range of the bamboo can be widened and waste sympodial bamboo can be changed into valuables.
Description
Technical field
The invention belongs to the synthetic field of the tackiness agent of bamboo wood, more specifically relate to the preparation method of the integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly.
Background technology
At present; The wood-based plate of bamboo wood and timber, integrated section bar nearly all are to use Phenol aldehyde resin; Phenol aldehyde resin has thermotolerance, electrical insulating property, good characteristic such as water-fast, weather-proof, higher mechanical strength and difficult combustion and be used for tackiness agent, paint raw materials and wear-resistant material in a large number; The scientific research personnel is also constantly exploring resol, with the bonding strength that improves resol, the thermotolerance and the wear resistance of resin.
As disclosing composition of raw materials of a kind of modified alkyd resin glue and preparation method thereof in the patent " composition of raw materials of a kind of modified alkyd resin glue and preparation method thereof " (200710009600), the raw material of employing is: phenol, carboxamide, formaldehyde, liquid caustic soda and water.Its preparation technology earlier processes carboxamide and part formaldehyde the affixture of solid carboxamide and formaldehyde in two steps, then in the building-up process of resol, adds and reacts.The Phenol aldehyde resin of this method preparation is applicable to the use of timber and scattered artificial bamboo board.
In " modified phenolic resin for bamboo structure material and preparation method thereof " (201010200167) a kind of constructional feature that combines bamboo wood is disclosed and for example, the bamboo structural wood glue of preparation, its preparation raw material is a phenolic aldehyde stock solution 35～85%; Formalin 0～40%; Alkaline aqueous solution 7～20%; Resorcinol 0.5～5%.The preparation method is: in reaction kettle, add the phenolic aldehyde stock solution, add formalin for the first time, add alkaline aqueous solution again; Be warming up to 30～70 ℃; Reaction 30～90min adds formalin again, is warming up to 70～98 ℃; Insulation reaction 20～90min adds Resorcinol after adding the alkaline aqueous solution reaction more again, is 15～700mpa.s to testing gelatin viscosity.The modified alkyd resin glue of this method preparation has some improvement to the glue performance of scattered bamboo wood, but very little for the improvement of the glue performance of the bamboo wood of growing thickly.
Growing thickly, its bar of bamboo such as imperial bamboo is high, the footpath is thick, the unit surface timber yield is higher 5～6 times than China scattered bamboo of main economic bamboo such as mao bamboon; Thick and the fiber of the fiber of bamboo of growing thickly accounts for 52.47% of whole tissues in the bar stem, the bamboo excellent property of growing thickly, density are high, the intensity height is good construction timber.And the bamboo that grows thickly is thick because of fiber, and sugar degree, starch-containing amount height are damaged by worms the Practical Performance extreme difference easily.
The bamboo that grows thickly is all different on fibrous texture, component content with scattered bamboo, and the bamboo fibers of growing thickly is thicker, and sugar, starch, sour matter equal size are all high than scattered bamboo; Bamboo ring and the bamboo rod fibers water cut of growing thickly differs greatly; The ring water cut is very low, and bamboo bar water cut is very high, when drying; The ring fiber shrinks seldom, and shrinks significantly in bamboo bar position.Above-mentioned said Phenol aldehyde resin is applied on the bamboo wood of growing thickly; The bamboo section bar that is equipped with of growing thickly causes the section bar cracking because percentage of water loss differs greatly in the time of exsiccant; Fiber adding the bamboo that grows thickly is thick, and the above-mentioned gluing insufficient strength that connects is easy to craze and transfiguration in the exsiccant process; Can not reach the requirement of strength of bamboo profile, this major cause that bamboo can not be exploited for many years of just growing thickly.
Summary of the invention
In order to solve above-mentioned said problem, in conjunction with the constructional feature of the bamboo that grows thickly, development be fit to the to grow thickly tackiness agent of bamboo wood; The present invention aims to provide composition of raw materials of a kind of Phenol aldehyde resin that is applicable to the integrated section bar of bamboo of growing thickly and preparation method thereof, and the preparation method is simple, and the Phenol aldehyde resin of preparation is strong to the bamboo wood bonding capacity of growing thickly simultaneously; Weathering resistance is high, and it is low that dipping is peeled off rate, avoided section bar craze and transfiguration in the exsiccant process; Can widen the scope of utilizing of bamboo wood, the bamboo that grows thickly is turned waste into wealth.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly, the main formula material of this bamboo Phenol aldehyde resin of growing thickly is: formaldehyde, phenol, two oxalic acids, SODIUM SULPHATE ANHYDROUS 99PCT, urea, oleic acid, liquid caustic soda, colophonium powder, water.
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly preparation method: in parts by weight
1. formaldehyde 60～80, phenol 50～75, two oxalic acids 25～45; Survey the pH value of mixture after liquid caustic soda 2～5 stirs, pH value is 7～10, is warming up to 65～80 ℃ after pH value is qualified; The limit temperature is incubated 70～100min then to 85 ℃, and temperature is controlled in 75～80 ℃ of scopes during insulation;
2. after being incubated 70～100min, the pH value of measured reaction thing, pH value are 7～10, cool to 70 ℃ after pH value is qualified;
3. after temperature drops to 70 ℃, in above-mentioned reactant, add formaldehyde 20～40, be warming up to 80～85 ℃ after anhydrous sodium sodium sulphate 10～35 stirs, insulation reaction 80～100min;
4. after reaction is accomplished, reactant is carried out the detection of pH value again, pH value is between 7～10; After being cooled to 60 ℃ after pH value is qualified; In this reactant, add urea 10～25, urea is carboxamide, and urea combines to generate the solid affixture of carboxamide and formaldehyde with part formaldehyde; Strengthen the stability of this tackiness agent performance, can also improve the curing speed of this tackiness agent simultaneously.Add after urea stirs temperature to be risen to 70 ℃ and add oleic acid 3～8 more inside, liquid caustic soda 3～6 adds water 40～75 and stirs and be incubated 60min after continued is warming up to 70 ℃;
5. cool to 45～50 ℃ after being incubated 60min, constantly stir 30min after adding 0.1～0.3 colophonium powder more inside, stir and cool to 30 ℃ after accomplishing and get final product discharging, the colophonium powder of interpolation can increase the bonding strength and the bonding capacity of this Phenol aldehyde resin.
Prepare at Phenol aldehyde resin and to have added SODIUM SULPHATE ANHYDROUS 99PCT in the process; This glue is applied to grow thickly on the bamboo wood; The water cut of bamboo wood bamboo bar and ring differs greatly owing to grow thickly; In phenolic glue, added SODIUM SULPHATE ANHYDROUS 99PCT, the bamboo wood of growing thickly is removed redundant moisture fast in the process of oven dry compression moulding, and the bamboo profile of avoiding growing thickly causes the section bar craze and transfiguration because of percentage of water loss differs greatly in the process of stripping drying.
Prepare a spot of oleic acid of interpolation in the process at Phenol aldehyde resin, can harden after the oleic acid oxidation, will contain oleic Phenol aldehyde resin and be used to the bamboo profile of growing thickly,, strengthened the hardness of the bamboo profile of growing thickly because oleic acid can harden.
Bamboo fibers is thick owing to grow thickly; The bonding capacity of general Phenol aldehyde resin is difficult to make the section bar behind the gummed to reach the bonding strength of section bar; The Phenol aldehyde resin that will contain colophonium powder is applied to grow thickly on the bamboo; Colophonium powder can strengthen the bonding strength and the bonding capacity of Phenol aldehyde resin, the bonding strength and the bonding strength of the bamboo profile that guaranteed to grow thickly.
This technical scheme produces following beneficial effect:
1, this Phenol aldehyde resin is to combine the bamboo structure characteristics preparation of growing thickly, and the Phenol aldehyde resin for preparing through this technical scheme is a transparent liquid, stable performance; Glue performance is strong; Good weatherability, it is very low that dipping is peeled off rate, and curing speed is fast; This Phenol aldehyde resin integrated section bar of bamboo that is used for growing thickly, the bamboo profile intensity of gummed can reach the requirement of strength of structural wood fully.
2, this Phenol aldehyde resin is applied to grow thickly in the processing of the integrated section bar of bamboo; Because this Phenol aldehyde resin is according to the constructional feature preparation of the bamboo that grows thickly; In the process of Phenol aldehyde resin preparation, added materials such as SODIUM SULPHATE ANHYDROUS 99PCT, oleic acid, colophonium powder, this Phenol aldehyde resin is applied on the bamboo profile of growing thickly, and removes the bamboo wood redundant moisture fast; The oleic acid oxidation post-hardening can increase the hardness of section bar in the process of high-temperature molding; Simultaneously owing to added the bonding strength that colophonium powder has increased Phenol aldehyde resin, bamboo bamboo fibers bonding capacity is strong to growing thickly, and the integrated section bar of the bamboo that grows thickly of manufacturing is difficult for craze and transfiguration.
3, this Phenol aldehyde resin plays active promoting function to the application of bamboo wood, has widened the scope of utilizing of bamboo wood, make all the time can not processed utilization the bamboo wood of growing thickly can be able to processing and utilization, turn waste into wealth.
4, this technical scheme is simple in the technology of preparation Phenol aldehyde resin, only needs interpolation raw material stage by stage in the preparation process, lets it fully react, and required Heating temperature is low in this process, the while need not dewater, contamination-free, energy-conserving and environment-protective.
Specific embodiment
Embodiment 1
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly, the main formula material of this bamboo Phenol aldehyde resin of growing thickly is: formaldehyde, phenol, two oxalic acids, SODIUM SULPHATE ANHYDROUS 99PCT, urea, oleic acid, liquid caustic soda, colophonium powder, water.
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly preparation method: with pure reaction kettle is example
1. formaldehyde 700kg, phenol 650kg, two oxalic acid 380kg; Survey the pH value of mixture after liquid caustic soda 35kg stirs, pH value is 7.8, is warming up to 80 ℃ after pH value is qualified; The limit temperature is incubated 95min then to 85 ℃, and temperature is controlled in 75～80 ℃ of scopes during insulation;
2. after being incubated 95min, the pH value of measured reaction thing, pH value are 7.8, and pH value is qualified to cool to 70 ℃;
3. after temperature drops to 70 ℃, in above-mentioned reactant, add formaldehyde 300kg, be warming up to 80 ℃, insulation reaction 90min after anhydrous sodium sodium sulphate 200kg stirs;
4. after reaction is accomplished; Reactant is carried out the detection of pH value again, and pH value is 8, be cooled to 60 ℃ after qualified after; Continue to add urea 180kg; Add after urea stirs temperature to be risen to 70 ℃ and add oleic acid 50kg more inside, liquid caustic soda 50kg adds water 500kg and stirs and be incubated 60min after continued is warming up to 70 ℃;
5. cool to 45 ℃ after being incubated 30min, constantly stir 30min after adding the colophonium powder of 2kg more inside, stir and cool to 30 ℃ after accomplishing and get final product discharging.
The Phenol aldehyde resin of this technical scheme preparation to the characteristics of the bamboo that grows thickly, has added a spot of colophonium powder, SODIUM SULPHATE ANHYDROUS 99PCT, oleic acid in the preparation process of Phenol aldehyde resin, increased the cementability of glue; Can remove the moisture in the bamboo fibers fast, can also harden simultaneously, increase the intensity of section bar; Be applied to grow thickly on the integrated section bar of bamboo, bonding capacity is strong, water-fast good weatherability; It is low to peel off rate, and the integrated section bar intensity of the bamboo that grows thickly of gummed is high, satisfies the requirement of strength of structural shapes.
Embodiment 2
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly, the main formula material of this bamboo Phenol aldehyde resin of growing thickly is: formaldehyde, phenol, two oxalic acids, SODIUM SULPHATE ANHYDROUS 99PCT, urea, oleic acid, liquid caustic soda, colophonium powder, water.
The integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly preparation method: with pure reaction kettle is example
1. formaldehyde 65kg, phenol 60kg, two oxalic acid 30kg, liquid caustic soda 3kg survey the pH value of mixture at the back that stirs, and pH value is 8.2, is warming up to 75 ℃ after pH value is qualified, and the limit temperature is incubated 85min then to 85 ℃, and temperature is controlled in 75～80 ℃ of scopes during insulation;
2. after being incubated 85min, the pH value of measured reaction thing, pH value are 8.5 to cool to 70 ℃ after qualified;
3. after temperature drops to 70 ℃, in above-mentioned reactant, add formaldehyde 25kg, be warming up to 80 ℃, insulation reaction 90min after anhydrous sodium sodium sulphate 20kg stirs;
4. after reaction is accomplished; Reactant is carried out the detection of pH value again, and pH value is 8.5, be cooled to 60 ℃ after qualified after; Continue to add urea 20kg; Add after urea stirs temperature to be risen to 70 ℃ and add oleic acid 6kg more inside, liquid caustic soda 5kg adds water 55kg and stirs and be incubated 60min after continued is warming up to 70 ℃;
5. cool to 50 ℃ after being incubated 30min, constantly stir 30min after adding the colophonium powder of 0.2kg more inside, stir and cool to 30 ℃ after accomplishing and get final product discharging.
The Phenol aldehyde resin of this technical scheme preparation to the characteristics of the bamboo that grows thickly, has added a spot of colophonium powder, SODIUM SULPHATE ANHYDROUS 99PCT, oleic acid in the preparation process of Phenol aldehyde resin, increased the cementability of glue; Can remove the moisture in the bamboo fibers fast, can also harden simultaneously, increase the intensity of section bar; Be applied to grow thickly on the integrated section bar of bamboo, bonding capacity is strong, water-fast good weatherability; It is low to peel off rate, and the integrated section bar intensity of the bamboo that grows thickly of gummed is high, satisfies the requirement of strength of structural shapes.
Claims (4)
1. the integrated section bar Phenol aldehyde resin of the bamboo that a grows thickly formula material is characterized in that, the main formula material of the integrated section bar Phenol aldehyde resin of this bamboo that grows thickly is: formaldehyde, phenol, two oxalic acids, SODIUM SULPHATE ANHYDROUS 99PCT, urea, oleic acid, liquid caustic soda, colophonium powder, water.
2. the integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly according to claim 1 formula material is characterized in that, described liquid caustic soda can be in volatile caustic, sodium hydroxide, Pottasium Hydroxide, the hydrated barta any one.
3. the preparation method of the integrated section bar Phenol aldehyde resin of the bamboo that grows thickly as claimed in claim 1 is characterized in that adopting following process step: count by weight
1. formaldehyde 60～80, phenol 50～75, two oxalic acids 25～45; Survey the pH value of mixture after liquid caustic soda 2～5 stirs, pH value is 7～10, is warming up to 65～80 ℃ after pH value is qualified; The limit temperature is incubated 70～100min then to 85 ℃, and temperature is controlled in 75～80 ℃ of scopes during insulation;
2. after being incubated 70～100min, the pH value of measured reaction thing, pH value are 7～10, cool to 70 ℃ after pH value is qualified;
3. after temperature drops to 70 ℃, in above-mentioned reactant, add formaldehyde 20～40, be warming up to 80～85 ℃ after sodium sulphite anhydrous 99.3 10～35 stirs, insulation reaction 80～100min;
4. after reaction is accomplished; To reactant in the detection of carrying out pH value, pH value between 7～10, be cooled to 60 ℃ after qualified after; In this reactant, add urea 10～25; Add after urea stirs temperature to be risen to 70 ℃ and add oleic acid 3～8 more inside, liquid caustic soda 3～6 adds water 40～75 and stirs and be incubated 60min after continued is warming up to 70 ℃;
5. cool to 45～50 ℃ after being incubated 30min, stir 30min after adding 0.1～0.3 colophonium powder more inside, stir and cool to 30 ℃ after accomplishing and get final product discharging.
4. the preparation method of the integrated section bar Phenol aldehyde resin of a kind of bamboo that grows thickly according to claim 3 is characterized in that, described liquid caustic soda can be in volatile caustic, sodium hydroxide, Pottasium Hydroxide, the hydrated barta any one.
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| CN2011102576479A CN102432784A (en) | 2011-09-02 | 2011-09-02 | Raw material formula and preparation method of phenolic resin glue for sympodial bamboo integrated section |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739801A (en) * | 2014-01-17 | 2014-04-23 | 深圳市康尔竹木业有限公司 | Raw materials of resin adhesive for sympodial bamboo integrated profile and preparation method of resin adhesive |
| CN111251398A (en) * | 2020-02-18 | 2020-06-09 | 微山宏瑞电力科技有限公司 | Heat-adaptive environment-friendly sound insulation floor and manufacturing method thereof |
-
2011
- 2011-09-02 CN CN2011102576479A patent/CN102432784A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739801A (en) * | 2014-01-17 | 2014-04-23 | 深圳市康尔竹木业有限公司 | Raw materials of resin adhesive for sympodial bamboo integrated profile and preparation method of resin adhesive |
| CN103739801B (en) * | 2014-01-17 | 2015-06-17 | 深圳市康尔竹木业有限公司 | Raw materials of resin adhesive for sympodial bamboo integrated profile and preparation method of resin adhesive |
| WO2015106668A1 (en) * | 2014-01-17 | 2015-07-23 | 深圳市康尔竹木业有限公司 | Raw materials and preparation method for resin adhesive for use in clumping bamboo integrated extrudate |
| CN111251398A (en) * | 2020-02-18 | 2020-06-09 | 微山宏瑞电力科技有限公司 | Heat-adaptive environment-friendly sound insulation floor and manufacturing method thereof |
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Effective date of registration: 20130208 Address after: Yuxi City, Yunnan province 653401 Ping Wu Town Industrial Zone, Xinping Yi and Dai Autonomous County Yang Meijian new bamboo Co. Ltd. Applicant after: Xiang Lin Address before: Yuxi City, Yunnan province 653400, Xinping Yi and Dai Autonomous County Yang Wu Town Industrial Zone No. 188 Applicant before: Xinping Meijian New Bamboo & Wood Co., Ltd. |
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