CN109773925A - A kind of preparation method of Scrimber - Google Patents
A kind of preparation method of Scrimber Download PDFInfo
- Publication number
- CN109773925A CN109773925A CN201910171617.2A CN201910171617A CN109773925A CN 109773925 A CN109773925 A CN 109773925A CN 201910171617 A CN201910171617 A CN 201910171617A CN 109773925 A CN109773925 A CN 109773925A
- Authority
- CN
- China
- Prior art keywords
- resin glue
- phenolic resin
- veneer
- methyl silicate
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The invention belongs to Scrimber field more particularly to a kind of preparation methods of Scrimber.Preparation method provided by the invention is the following steps are included: a) by methyl silicate modified alkyd resin glue water retting into wood single-plate, drying obtains once being glued veneer；B) dry by unmodified phenolic resin glue water retting into the primary sizing veneer, obtain secondary sizing veneer；C) the secondary sizing veneer is molded, obtains Scrimber.The present invention carries out two step impregnations to wood single-plate by using different phenolic resin glue, greatly improves the adhesion strength of Scrimber made from subsequent molding, reduces the saturated water absorption of Scrimber.The experimental results showed that the adhesion strength of the Scrimber prepared using the method for the present invention is up to 2.2~4.0MPa, saturated water absorption 15~17.5%.
Description
Technical field
The invention belongs to Scrimber field more particularly to a kind of preparation methods of Scrimber.
Background technique
China is forest reserves country in short supply, and the forest reserves are very valuable, and there are biggish lances for timber supply and demand
Shield.According to customs statistics, the first quarter in 2016, China is total to 1100 ten thousand stere of imported log.In China's Forest Resources wretched insufficiency
In the case where, after China implements in full project on protection of natural forest resources, essence variation is had occurred in timber supply structure, is utilized
The Scrimber that fast growing wood, low-quality material, small dimension wood, thinnings and non-wood plant fibre are manufactured by raw material replaces traditional big
Diameter grade timber resources has been trend of the times.
Scrimber is under the premise of not upsetting lumber fibre orientation, retaining timber fundamental characteristics, by glue after wood fragments
A kind of intensity made of closing is high, specification is big, the imitation wood with natural wood texture structure, has the application of extensive market
Prospect.But existing Scrimber there is adhesion strengths it is lower, waterproof performance is poor the problems such as.
Summary of the invention
In view of this, being prepared the purpose of the present invention is to provide a kind of preparation method of Scrimber using the method for the present invention
Scrimber adhesion strength with higher and waterproof performance.
The present invention provides a kind of preparation methods of Scrimber, comprising the following steps:
A) dry by methyl silicate modified alkyd resin glue water retting into wood single-plate, it obtains once being glued single
Plate；
B) dry by unmodified phenolic resin glue water retting into the primary sizing veneer, it is single to obtain secondary sizing
Plate；
C) the secondary sizing veneer is molded, obtains Scrimber.
Preferably, the methyl silicate modified alkyd resin glue water is prepared in accordance with the following methods:
Phenol, formaldehyde, alkali and water hybrid reaction, reaction product is mixed, obtain methane-siliconic acid with methyl silicate later
Salt modified alkyd resin glue water；
The unmodified phenolic resin glue is prepared in accordance with the following methods:
Phenol, formaldehyde, alkali and water hybrid reaction obtain unmodified phenolic resin glue.
Preferably, the methyl silicate includes sodium methyl silicate and/or potassium methyl silicate.
Preferably, the molar ratio of the sodium methyl silicate and potassium methyl silicate is 1:(0.5~2).
Preferably, viscosity of the methyl silicate modified alkyd resin glue water at 25 DEG C is 1~12cps；
Viscosity of the unmodified phenolic resin glue at 25 DEG C is 6~30cps.
Preferably, in step a), the mode of the dipping are as follows:
Wood single-plate is dipped into methyl silicate modified alkyd resin glue water, the temperature of the immersion is preferably 15
~35 DEG C, the time of the immersion is 6~12h；
In step b), the mode of the dipping are as follows:
The primary sizing veneer is dipped into unmodified phenolic resin glue, the temperature of the immersion is preferably 15
~35 DEG C, the time of the immersion is 6~12h.
Preferably, in step a), the mode of the drying is to dry, and the time of the drying is 18~36h；
In step b), the mode of the drying is to dry, and the time of the drying is 18~36h.
Preferably, in step c), the temperature of the molding is 110~130 DEG C；The pressure of the molding is 6~15 public
Jin；The time of the molding is 30~240min.
Preferably, in step a), before being impregnated, the wood single-plate first carries out alkali process, specific processing step
Include:
By wood single-plate soda boiling in the soda boiling liquid containing sodium hydroxide and sodium sulfite, carry out later washing and
It is dry, obtain alkali treated wood veneer.
Preferably, the content of sodium hydroxide is 80~120g/L in the soda boiling liquid；The soda boiling liquid sulfite sodium
Content is 40~60g/L.
Compared with prior art, the present invention provides a kind of preparation methods of Scrimber.Preparation method provided by the invention
The following steps are included: a) by methyl silicate modified alkyd resin glue water retting into wood single-plate, it is dry, once applied
Glue veneer；B) dry by unmodified phenolic resin glue water retting into the primary sizing veneer, obtain secondary sizing veneer；
C) the secondary sizing veneer is molded, obtains Scrimber.The present invention is by using different phenolic resin glue to wood
Material veneer carries out two step impregnations, greatly improves the adhesion strength of Scrimber made from subsequent molding, reduces Scrimber
Saturated water absorption.The experimental results showed that using the method for the present invention preparation Scrimber adhesion strength up to 2.2~
4.0MPa, saturated water absorption 15~17.5%.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
The present invention provides a kind of preparation methods of Scrimber, comprising the following steps:
A) dry by methyl silicate modified alkyd resin glue water retting into wood single-plate, it obtains once being glued single
Plate；
B) dry by unmodified phenolic resin glue water retting into the primary sizing veneer, it is single to obtain secondary sizing
Plate；
C) the secondary sizing veneer is molded, obtains Scrimber.
In the present invention, first by methyl silicate modified alkyd resin glue water retting into wood single-plate.Wherein, institute
The thickness for stating wood single-plate is preferably 0.5~2mm, concretely 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm,
1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm.In the present invention, it is carrying out
Before dipping, the wood single-plate preferably first carries out alkali process, and specific processing step includes:
By wood single-plate soda boiling in the soda boiling liquid containing sodium hydroxide and sodium sulfite, carry out later washing and
It is dry, obtain alkali treated wood veneer.
In above-mentioned alkali treatment method provided by the invention, in the soda boiling liquid content of sodium hydroxide be preferably 80~
120g/L, concretely 80g/L, 85g/L, 90g/L, 95g/L, 100g/L, 105g/L, 110g/L, 115g/L or 120g/L；
The content of the soda boiling liquid sulfite sodium is preferably 40~60g/L, concretely 40g/L, 45g/L, 50g/L, 55g/L or
60g/L；The time of the soda boiling is preferably 5~10h, concretely 5h, 5.5h, 6h, 6.5h, 7h, 7.5h, 8h, 8.5h, 9h,
9.5h or 10h；The mode of the washing is preferably washed；The number of the washing is preferably 1~5 time, concretely 1 time, 2
Secondary, 3 times, 4 times or 5 times；The mode of the drying is preferably dried.
In the present invention, viscosity of the methyl silicate modified alkyd resin glue water at 25 DEG C be preferably 1~
12cps, concretely 1cps, 1.5cps, 2cps, 2.5cps, 3cps, 3.5cps, 4cps, 4.5cps, 5cps, 5.5cps,
6cps、6.5cps、7cps、7.5cps、8cps、8.5cps、9cps、9.5cps、 10cps、10.5cps、11cps、11.5cps
Or 12cps；The content of the free formaldehyde of the methyl silicate modified alkyd resin glue water preferably≤0.25wt%, dissociate benzene
The content of phenol preferably≤2.5wt%.In one embodiment provided by the invention, the methyl silicate phenol-formaldehyde resin modified
Glue can be prepared in accordance with the following methods:
Phenol, formaldehyde, alkali and water hybrid reaction, reaction product is mixed, obtain methane-siliconic acid with methyl silicate later
Salt modified alkyd resin glue water.
In the preparation method of above-mentioned methyl silicate modified alkyd resin glue water provided by the invention, the alkali includes
But it is not limited to sodium hydroxide；The methyl silicate includes but is not limited to sodium methyl silicate and/or potassium methyl silicate, preferably
The molar ratio of sodium methyl silicate and potassium methyl silicate, the sodium methyl silicate and potassium methyl silicate is preferably 1:(0.5~2), tool
Body can for 1:0.5,1:0.6,1:0.7,1:0.8,1:0.9,1:1,1:1.1,1:1.2,1:1.3,1:1.4,1:1.5,1:1.6,
1:1.7,1:1.8,1:1.9 or 1:2；The mass ratio of the phenol and the methyl silicate is preferably 100:(2~10), tool
Body can be 100:2,100:3,100:4,100:5,100:6,100:7,100:8,100:9 or 100:10；The hybrid reaction
Detailed process preferably includes: first not mixing partial moisture with formaldehyde and alkali, obtains formalin and aqueous slkali；Then will
Phenol and aqueous slkali mixing, by taking concentration is the aqueous slkali of 32wt% as an example, the mass ratio of the phenol and aqueous slkali is preferably
100:(6~18), concretely 100:6,100:7,100:8,100:9,100:10,100:11,100:12,100:13,100:
14, the temperature of 100:15,100:16,100:17 or 100:18, the phenol and aqueous slkali mixing is preferably 30~50 DEG C, tool
Body can be 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C or 50 DEG C, and the time of the phenol and aqueous slkali mixing is preferably 40~60min, tool
Body can be 40min, 45 min, 50min, 55min or 60min；Then formaldehyde is added dropwise in the mixed system of phenol and aqueous slkali
Aqueous solution, by taking concentration is the formalin of 36.7wt% as an example, the quality of the formalin of the phenol and dropwise addition
Than being preferably 100:(140~150), concretely 100:140,100:141,100:142,100:143,100:144,100:
145,100:146,100:147,100:148,100:149 or 100:150；After being added dropwise, hybrid reaction for a period of time, institute
The temperature for stating hybrid reaction is preferably 5~15 DEG C higher than the mixing temperature of foregoing description phenol and aqueous slkali, specifically can high 5 DEG C,
6 DEG C, 7 DEG C, 8 DEG C, 9 DEG C, 10 DEG C, 11 DEG C, 12 DEG C, 13 DEG C, 14 DEG C or 15 DEG C, the time of the hybrid reaction is preferably 100~
140min, concretely 100min, 105min, 110min, 115min, 120min, 125min, 130min, 135min or
140min；Reaction system continues temperature reaction for a period of time later, and raised temperature is preferably 10~30 DEG C, is specifically as follows 10
℃、11℃、12℃、13℃、14℃、15℃、16℃、17℃、 18℃、19℃、20℃、21℃、22℃、23℃、24℃、25
DEG C, 26 DEG C, 27 DEG C, 28 DEG C, 29 DEG C or 30 DEG C, the time of the temperature reaction is preferably 100~150min, concretely
100min, 105 min, 110min, 115min, 120min, 125min, 130min, 135min, 140min, 145 min or
150min；Then reaction system continues temperature reaction for a period of time, and raised temperature is preferably 5~15 DEG C, is specifically as follows 5
DEG C, 6 DEG C, 7 DEG C, 8 DEG C, 9 DEG C, 10 DEG C, 11 DEG C, 12 DEG C, 13 DEG C, 14 DEG C or 15 DEG C, the time of the temperature reaction is preferably 60
~120min, be specifically as follows 60min, 65 min, 70min, 75min, 80min, 85min, 90min, 95min, 100min,
105min, 110min, 115min or 120min；Finally reaction product is mixed with the water of surplus and methyl silicate, it is described
The mass ratio of phenol and the water of the surplus is preferably 100:(20~40), concretely 100:20,100:25,100:30,
100:35 or 100:40；It is cooling after mixing, obtain methyl silicate modified alkyd resin glue water.
In the present invention, during by methyl silicate modified alkyd resin glue water retting into wood single-plate, institute
Wood single-plate is preferably dipped into methyl silicate modified alkyd resin glue water by the mode for stating dipping.Wherein, the immersion
Temperature be preferably 15~35 DEG C, concretely 15 DEG C, 16 DEG C, 17 DEG C, 18 DEG C, 19 DEG C, 20 DEG C, 21 DEG C, 22 DEG C, 23 DEG C, 24
DEG C, 25 DEG C (room temperature), 26 DEG C, 27 DEG C, 28 DEG C, 29 DEG C, 30 DEG C, 31 DEG C, 32 DEG C, 33 DEG C, 34 DEG C or 35 DEG C；The immersion
Time is preferably 6~12h, concretely 6h, 6.5h, 7h, 7.5h, 8h, 8.5h, 9h, 9.5h, 10h, 10.5 h, 11h,
11.5h or 12h.
In the present invention, after wood single-plate completes dipping, to the wood for being impregnated with methyl silicate modified alkyd resin glue water
Material veneer is dried.Wherein, the mode of the drying is preferably dried；The time of the drying is preferably 18~36h, tool
Body can for 18h, 19h, 20h, 21h, 22h, 23h, for 24 hours, 25h, 26h, 27h, 28h, 29h, 30h, 31h, 32h, 33h, 34h,
35h or 36h.After drying, it obtains once being glued veneer.
In the present invention, it obtains after being once glued veneer, by unmodified phenolic resin glue water retting to the primary sizing
In veneer.Wherein, viscosity of the unmodified phenolic resin glue at 25 DEG C is preferably 6~30cps, concretely 6cps,
7cps、8cps、9cps、10cps、11cps、12cps、13cps、 14cps、15cps、16cps、17cps、18cps、19cps、
20cps, 21cps, 22cps, 23cps, 24cps, 25cps, 26cps, 27cps, 28cps, 29cps or 30cps；It is described not change
Property phenolic resin glue free formaldehyde content preferably≤0.3wt%, the content of free-phenol preferably≤3wt%.At this
It invents in the one embodiment provided, the unmodified phenolic resin glue can be prepared in accordance with the following methods:
Phenol, formaldehyde, alkali and water hybrid reaction obtain unmodified phenolic resin glue.
In the preparation method of above-mentioned unmodified phenolic resin glue provided by the invention, the alkali includes but is not limited to
Sodium hydroxide；The detailed process of the hybrid reaction preferably includes: first not mixing partial moisture with formaldehyde and alkali, obtains first
Aldehyde aqueous solution and aqueous slkali；Then phenol and aqueous slkali are mixed, by taking concentration is the aqueous slkali of 32wt% as an example, the phenol
Mass ratio with aqueous slkali is preferably 100:(18~30), concretely 100:18,100:19,100:20,100:21,100:
22,100:23,100:24,100:25,100:26,100:27,100:28,100:29 or 100:30, the phenol and aqueous slkali
Mixed temperature is preferably 30~50 DEG C, concretely 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C or 50 DEG C, the phenol and aqueous slkali
The mixed time is preferably 30~90min, concretely 30min, 35min, 40min, 45min, 50min, 55min,
60min, 65min, 70min, 75min, 80min, 85min or 90min；Then it is dripped in the mixed system of phenol and aqueous slkali
Add formalin, by taking concentration is the formalin of 36.7wt% as an example, the formalin of the phenol and dropwise addition
Mass ratio be preferably 100:(150~160), concretely 100:150,100:151,100:152,100:153,100:
154,100:155,100:156,100:157,100:158,100:159 or 100:160；After being added dropwise, one section of hybrid reaction
Time, the temperature of the hybrid reaction is preferably 5~15 DEG C higher than the mixing temperature of foregoing description phenol and aqueous slkali, specifically may be used
With high 5 DEG C, 6 DEG C, 7 DEG C, 8 DEG C, 9 DEG C, 10 DEG C, 11 DEG C, 12 DEG C, 13 DEG C, 14 DEG C or 15 DEG C, the time of the hybrid reaction is excellent
It is selected as 90~120min, concretely 90min, 95min, 100min, 105min, 110min, 115min or 120min；Later
Reaction system continues temperature reaction for a period of time, and raised temperature is preferably 10~30 DEG C, is specifically as follows 10 DEG C, 11 DEG C, 12
℃、13℃、14℃、15℃、 16℃、17℃、18℃、19℃、20℃、21℃、22℃、23℃、24℃、25℃、26℃、 27
DEG C, 28 DEG C, 29 DEG C or 30 DEG C, the time of the temperature reaction is preferably 90~120min, concretely 90min, 95min,
100min, 105min, 110min, 115min or 120min；Then reaction system continues temperature reaction for a period of time, raised
Temperature is preferably 5~15 DEG C, is specifically as follows 5 DEG C, 6 DEG C, 7 DEG C, 8 DEG C, 9 DEG C, 10 DEG C, 11 DEG C, 12 DEG C, 13 DEG C, 14 DEG C or 15
DEG C, the time of the temperature reaction is preferably 60~150min, concretely 60min, 65min, 70min, 75min, 80min,
85 min、90min、95min、100min、105min、110min、115min、120min、125min、 130min、135min、
140min, 145min or 150min；Finally reaction product is mixed with the water of surplus, the water of the phenol and the surplus
Mass ratio is preferably 100:(20~40), concretely 100:20,100:25,100:30,100:35 or 100:40；Mixing finishes
Afterwards, cooling, obtain unmodified phenolic resin glue.
In the present invention, during by unmodified phenolic resin glue water retting into the primary sizing veneer, institute
Primary sizing veneer is preferably dipped into unmodified phenolic resin glue by the mode for stating dipping.Wherein, the temperature of the immersion
Degree preferably 15~35 DEG C, concretely 15 DEG C, 16 DEG C, 17 DEG C, 18 DEG C, 19 DEG C, 20 DEG C, 21 DEG C, 22 DEG C, 23 DEG C, 24 DEG C,
25 DEG C (room temperature), 26 DEG C, 27 DEG C, 28 DEG C, 29 DEG C, 30 DEG C, 31 DEG C, 32 DEG C, 33 DEG C, 34 DEG C or 35 DEG C；The time of the immersion
Preferably 6~12h, concretely 6h, 6.5h, 7h, 7.5h, 8h, 8.5h, 9h, 9.5h, 10h, 10.5h, 11h, 11.5h or
12h。
In the present invention, it after once sizing veneer completes dipping, is applied to the primary of unmodified phenolic resin glue is impregnated with
Glue veneer is dried.Wherein, the mode of the drying is preferably dried；The time of the drying is preferably 18~36h, tool
Body can for 18h, 19h, 20h, 21h, 22h, 23h, for 24 hours, 25h, 26h, 27h, 28h, 29h, 30h, 31h, 32h, 33h, 34h,
35h or 36h.After drying, secondary sizing veneer is obtained.
In the present invention, after obtaining secondary sizing veneer, the secondary sizing veneer is molded.Wherein, the mould
The temperature of pressure is preferably 110~130 DEG C, concretely 110 DEG C, 111 DEG C, 112 DEG C, 113 DEG C, 114 DEG C, 115 DEG C, 116 DEG C,
117℃、118℃、119℃、120℃、121℃、122℃、123℃、 124℃、125℃、126℃、127℃、128℃、129
DEG C or 130 DEG C；The pressure of the molding is preferably 6~15 kilograms, concretely 6 kilograms, 6.5 kilograms, 7 kilograms, 7.5 kilograms,
8 kilograms, 8.5 kilograms, 9 kilograms, 9.5 kilograms, 10 kilograms, 10.5 kilograms, 11 kilograms, 11.5 kilograms, 12 kilograms, 12.5 public affairs
Jin, 13 kilograms, 13.5 kilograms, 14 kilograms, 14.5 kilograms or 15 kilograms；The time of the molding is preferably 30~240min, tool
Body can for 30min, 40min, 50min, 60min, 70min, 80min, 90min, 100min, 110min, 120min, 130min,
140min, 150min, 160min, 170min, 180min, 190min, 200min, 210min, 220min, 230min or
240min.After molding, Scrimber is obtained.
The present invention carries out two step impregnations to wood single-plate by using different phenolic resin glue, greatly improves
The adhesion strength of Scrimber made from subsequent molding reduces the saturated water absorption of Scrimber.Using the method for the present invention preparation
Scrimber in the manufacture of the woodworks such as wayside pavilion, wooden footway, bench in park, door and window, timber floor, furniture, has good outdoors
Application prospect.The experimental results showed that the adhesion strength of the Scrimber prepared using the method for the present invention is satisfied up to 2.2~4.0MPa
With water absorption rate 15~17.5%.
For the sake of becoming apparent from, it is described in detail below by following embodiment.
In following embodiments of the invention, unless specifically stated otherwise, " part " indicates " mass parts ".
Embodiment 1
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 140 parts of 36.7wt% formalin,
6 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 40min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 100min, is continuously heating to 70 DEG C of constant temperature stirring 100min, is finally warming up to 80 DEG C
Constant temperature stirs 60min, adds water and 2 parts of sodium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic resin glue；Si modification phenol
The viscosity of urea formaldehyde glue is 1cps (25 DEG C), the content 0.25wt% of free formaldehyde, the content 2.5wt% of free-phenol.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 150 parts of 36.7wt% formalin, 32wt% hydrogen
18 parts of aqueous solution of sodium oxide, 30 parts of water add in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution for entering metering, constant temperature stirs 30min under the conditions of 40 DEG C, and formalin is then added dropwise, and rises
Temperature to 50 DEG C of constant temperature stir 90min, are continuously heating to 70 DEG C of constant temperature stirring 90min, are finally warming up to 80 DEG C of constant temperature stirrings
60min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 6cps (25 DEG C), first of dissociating
The content 0.29wt% of aldehyde, the content 2.89wt% of free-phenol.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
The rotary cut venner of 1.30 ± 0.1mm impregnates wood single-plate 6 hours in Si modification phenolic resin glue at 25 DEG C, takes out
It dries 24 hours, is then impregnated 6 hours at 25 DEG C in phenolic resin glue, taking-up is dried 24 hours, later in moulding press
On be molded, molding use temperature be 110 DEG C, pressure be 6 kilograms, the time be 30 minutes, after molding, recombinated
Timber recombinates the adhesion strength 2.2MPa of timber, saturated water absorption 17.9%.
Embodiment 2
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 150 parts of 36.7wt% formalin,
18 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 60min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 140min, is continuously heating to 70 DEG C of constant temperature stirring 150min, is finally warming up to 80 DEG C
Constant temperature stirs 120min, adds water and 5 parts of sodium methyl silicate, 5 parts of potassium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic aldehyde tree
Rouge glue；The viscosity of Si modification phenolic resin glue is 12cps (25 DEG C), and the content 0.12wt% of free formaldehyde, dissociate benzene
The content 1.2wt% of phenol.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 160 parts of 36.7wt% formalin, 32wt% hydrogen
30 parts of aqueous solution of sodium oxide, 30 parts of water add in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution for entering metering, constant temperature stirs 90min under the conditions of 40 DEG C, and formalin is then added dropwise, and rises
Temperature to 50 DEG C of constant temperature stir 120min, are continuously heating to 70 DEG C of constant temperature stirring 120min, are finally warming up to 80 DEG C of constant temperature stirrings
150min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 30cps (25 DEG C), is dissociated
The content 0.1wt% of formaldehyde, the content 1.0wt% of free-phenol.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
The veneer of 1.30 ± 0.1mm impregnates wood single-plate 12 hours in Si modification phenolic resin glue at 25 DEG C, and taking-up is dried in the air
It is 24 hours dry, it is then impregnated 12 hours at 25 DEG C in phenolic resin glue, taking-up is dried 24 hours, later in moulding press
On be molded, molding use temperature be 130 DEG C, pressure be 15 kilograms, the time be 240 minutes, after molding, weighed
Group timber, recombinates the adhesion strength of timber up to 4.0MPa, saturated water absorption 15%.
Embodiment 3
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 145 parts of 36.7wt% formalin,
12 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 50min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 120min, is continuously heating to 70 DEG C of constant temperature stirring 120min, is finally warming up to 80 DEG C
Constant temperature stirs 100min, adds water and 4 parts of sodium methyl silicate, 2 parts of potassium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic aldehyde tree
Rouge glue；The viscosity of Si modification phenolic resin glue is 8cps (25 DEG C), the content 0.18wt% of free formaldehyde, free-phenol
Content 2.0wt%.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 155 parts of 36.7wt% formalin, 32% hydrogen-oxygen
Change 25 parts of sodium water solution, 30 parts of water, is added in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering, constant temperature stirs 60min under the conditions of 40 DEG C, and formalin is then added dropwise, and heats up
100min is stirred to 50 DEG C of constant temperature, 70 DEG C of constant temperature stirring 100min is continuously heating to, is finally warming up to 80 DEG C of constant temperature stirrings
120min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 20cps (25 DEG C), is dissociated
The content 0.15wt% of formaldehyde, the content 2.0wt% of free-phenol.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
The veneer of 1.30 ± 0.1mm impregnates wood single-plate 8 hours in Si modification phenolic resin glue at 25 DEG C, and taking-up is dried
It 24 hours, is then impregnated 8 hours at 25 DEG C in phenolic resin glue, taking-up is dried 24 hours, enterprising in moulding press later
Row molding, molding use temperature for 120 DEG C, and pressure is 10 kilograms, and the time is 120 minutes, after molding, obtain Scrimber
Material recombinates the adhesion strength of timber up to 3.2MPa, saturated water absorption 17%.
Embodiment 4
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 142 parts of 36.7wt% formalin,
8 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 40min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 100min, is continuously heating to 70 DEG C of constant temperature stirring 100min, is finally warming up to 80 DEG C
Constant temperature stirs 60min, adds water and 2 parts of sodium methyl silicate, 4 parts of potassium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic aldehyde tree
Rouge glue；The viscosity of Si modification phenolic resin glue is 3cps (25 DEG C), the content 0.19wt% of free formaldehyde, free-phenol
Content 2.3wt%.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 152 parts of 36.7wt% formalin, 32wt% hydrogen
20 parts of aqueous solution of sodium oxide, 30 parts of water add in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution for entering metering, constant temperature stirs 30min under the conditions of 40 DEG C, and formalin is then added dropwise, and rises
Temperature to 50 DEG C of constant temperature stir 90min, are continuously heating to 70 DEG C of constant temperature stirring 90min, are finally warming up to 80 DEG C of constant temperature stirrings
60min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 6cps (25 DEG C), first of dissociating
The content 0.29wt% of aldehyde, the content 2.89wt% of free-phenol.
Timber alkali pretreatment are as follows: 1000ml distilled water is added with 80g sodium hydroxide and 40g sodium sulfite and prepares solution,
Wood single-plate is boiled 7 hours in solution, then takes out washing 3 times, naturally dry obtains alkali process veneer.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
The alkali process veneer of 1.30 ± 0.1mm impregnates alkali process veneer 6 hours in Si modification phenolic resin glue at 25 DEG C,
Taking-up is dried 24 hours, is then impregnated 6 hours at 25 DEG C in phenolic resin glue, and taking-up is dried 24 hours, later in mould
It is molded on press, molding uses temperature for 110 DEG C, and pressure is 6 kilograms, and the time is 30 minutes, after molding, obtains
Timber is recombinated, the adhesion strength for recombinating timber is 2.2MPa, saturated water absorption 16%.
Embodiment 5
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 148 parts of 36.7wt% formalin,
16 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 60min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 140min, is continuously heating to 70 DEG C of constant temperature stirring 150min, is finally warming up to 80 DEG C
Constant temperature stirs 120min, adds water and 6 parts of sodium methyl silicate, 3 parts of potassium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic aldehyde tree
Rouge glue；The viscosity of Si modification phenolic resin glue is 12cps (25 DEG C), and the content 0.16wt% of free formaldehyde, dissociate benzene
The content 1.8wt% of phenol.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 156 parts of 36.7% formalin, 32% hydroxide
Meter is added in 28 parts of sodium water solution, 30 parts of water in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of amount, constant temperature stirs 90min under the conditions of 40 DEG C, and formalin is then added dropwise, is warming up to
50 DEG C of constant temperature stir 120min, are continuously heating to 70 DEG C of constant temperature stirring 120min, are finally warming up to 80 DEG C of constant temperature stirrings
150min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 30cps (25 DEG C), is dissociated
The content 0.1wt% of formaldehyde, the content 1.0wt% of free-phenol.
Timber alkali pretreatment are as follows: 1000ml is added with 120g sodium hydroxide and 60g sodium sulfite and adds distilled water preparation molten
Liquid boils wood single-plate 7 hours in solution, then takes out washing 3 times, naturally dry obtains alkali process veneer.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
It is small to be impregnated 12 by the alkali process veneer of 1.30 ± 0.1mm in Si modification phenolic resin glue at 25 DEG C for alkali process veneer
When, taking-up is dried 24 hours, is then impregnated 12 hours at 25 DEG C in phenolic resin glue, is taken out and is dried 24 hours, later
It being molded on moulding press, molding uses temperature for 130 DEG C, and pressure is 15 kilograms, and the time is 240 minutes, after molding,
Recombination timber is obtained, recombinates the adhesion strength of timber up to 4.0MPa, saturated water absorption 16.5%.
Embodiment 6
The preparation process of Si modification phenolic resin glue are as follows: 100 parts of phenol, 146 parts of 36.7wt% formalin,
10 parts of 32wt% sodium hydrate aqueous solution, 30 parts of water, in tetra- mouthfuls of 500ml equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution of metering are added in flask, constant temperature stirs 50min under the conditions of 40 DEG C, and formaldehyde is then added dropwise
Aqueous solution is warming up to 50 DEG C of constant temperature stirring 120min, is continuously heating to 70 DEG C of constant temperature stirring 120min, is finally warming up to 80 DEG C
Constant temperature stirs 100min, adds water and 3 parts of sodium methyl silicate, 6 parts of potassium methyl silicate, is cooled to room temperature, and obtains Si modification phenolic aldehyde tree
Rouge glue；The viscosity of Si modification phenolic resin glue is 9cps (25 DEG C), the content 0.18wt% of free formaldehyde, free-phenol
Content 2.0wt%.
The preparation process of phenolic resin glue are as follows: 100 parts of phenol, 152 parts of 36.7wt% formalin, 32wt% hydrogen
20 parts of aqueous solution of sodium oxide, 30 parts of water add in the 500ml four-hole boiling flask equipped with spherical condensation tube, thermometer and agitating device
The phenol and sodium hydrate aqueous solution for entering metering, constant temperature stirs 60min under the conditions of 40 DEG C, and formalin is then added dropwise, and rises
Temperature to 50 DEG C of constant temperature stir 100min, are continuously heating to 70 DEG C of constant temperature stirring 100min, are finally warming up to 80 DEG C of constant temperature stirrings
120min adds and is water-cooled to room temperature, obtains phenolic resin glue；The viscosity of phenolic resin glue is 20cps (25 DEG C), is dissociated
The content 0.15wt% of formaldehyde, the content 2.0wt% of free-phenol.
Timber alkali pretreatment are as follows: 1000ml is added with 100g sodium hydroxide and 50g sodium sulfite and adds distilled water preparation molten
Liquid boils wood single-plate 7 hours in solution, then takes out washing 3 times, naturally dry obtains alkali process veneer.
Timber recombination technique are as follows: use Si modification phenolic resin glue and phenolic resin glue, timber use with a thickness of
The alkali process veneer of 1.30 ± 0.1mm impregnates alkali process veneer 8 hours in Si modification phenolic resin glue at 25 DEG C,
Taking-up is dried 24 hours, is then impregnated 8 hours at 25 DEG C in phenolic resin glue, and taking-up is dried 24 hours, later in mould
It is molded on press, molding uses temperature for 120 DEG C, and pressure is 10 kilograms, and the time is 120 minutes, after molding, obtains
Timber must be recombinated, recombinates the adhesion strength of timber up to 4.0MPa, saturated water absorption 15.5%.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of Scrimber, comprising the following steps:
A) dry by methyl silicate modified alkyd resin glue water retting into wood single-plate, it obtains once being glued veneer；
B) dry by unmodified phenolic resin glue water retting into the primary sizing veneer, obtain secondary sizing veneer；
C) the secondary sizing veneer is molded, obtains Scrimber.
2. preparation method according to claim 1, which is characterized in that the methyl silicate modified alkyd resin glue water is pressed
It is prepared according to following methods:
Phenol, formaldehyde, alkali and water hybrid reaction, later mix reaction product with methyl silicate, obtain methyl silicate and change
Property phenolic resin glue；
The unmodified phenolic resin glue is prepared in accordance with the following methods:
Phenol, formaldehyde, alkali and water hybrid reaction obtain unmodified phenolic resin glue.
3. preparation method according to claim 2, which is characterized in that the methyl silicate include sodium methyl silicate and/
Or potassium methyl silicate.
4. preparation method according to claim 3, which is characterized in that mole of the sodium methyl silicate and potassium methyl silicate
Than for 1:(0.5~2).
5. preparation method according to claim 1, which is characterized in that the methyl silicate modified alkyd resin glue water exists
Viscosity at 25 DEG C is 1~12cps；
Viscosity of the unmodified phenolic resin glue at 25 DEG C is 6~30cps.
6. preparation method according to claim 1, which is characterized in that in step a), the mode of the dipping are as follows:
Wood single-plate is dipped into methyl silicate modified alkyd resin glue water, the temperature of the immersion is preferably 15~35
DEG C, the time of the immersion is 6~12h；
In step b), the mode of the dipping are as follows:
The primary sizing veneer is dipped into unmodified phenolic resin glue, the temperature of the immersion is preferably 15~35
DEG C, the time of the immersion is 6~12h.
7. preparation method according to claim 1, which is characterized in that in step a), the mode of the drying is to dry, institute
Stating the dry time is 18~36h；
In step b), the mode of the drying is to dry, and the time of the drying is 18~36h.
8. preparation method according to claim 1, which is characterized in that in step c), the temperature of the molding is 110~
130℃；The pressure of the molding is 6~15 kilograms；The time of the molding is 30~240min.
9. preparation method according to claim 1, which is characterized in that in step a), before being impregnated, the timber
Veneer first carries out alkali process, and specific processing step includes:
By wood single-plate soda boiling in the soda boiling liquid containing sodium hydroxide and sodium sulfite, is washed and is dried later,
Obtain alkali treated wood veneer.
10. preparation method according to claim 9, which is characterized in that the content of sodium hydroxide is 80 in the soda boiling liquid
~120g/L；The content of the soda boiling liquid sulfite sodium is 40~60g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171617.2A CN109773925A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method of Scrimber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171617.2A CN109773925A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method of Scrimber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109773925A true CN109773925A (en) | 2019-05-21 |
Family
ID=66487700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171617.2A Pending CN109773925A (en) | 2019-03-07 | 2019-03-07 | A kind of preparation method of Scrimber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773925A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110341004A (en) * | 2019-07-15 | 2019-10-18 | 天津海源汇科技有限公司 | A kind of application technique of glued board plant fiber adhesive |
| CN111168791A (en) * | 2018-11-09 | 2020-05-19 | 青岛科技大学 | Preparation of reconstituted wood with water repellency properties |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2535194B2 (en) * | 1987-12-26 | 1996-09-18 | 株式会社産業技術研究所 | How to make lightweight wood products |
| CN101642924A (en) * | 2008-08-08 | 2010-02-10 | 仇峰 | Scrimber and manufacturing method thereof |
| CN102180639A (en) * | 2011-02-24 | 2011-09-14 | 卢清友 | Environment-friendly light heat-insulating material and manufacturing method thereof |
| CN102794798A (en) * | 2012-07-30 | 2012-11-28 | 王宜梁 | Impregnation process for improving pressing performance of recombined materials |
| CN104647494A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | Production method for rubber-wood heated floor |
| CN106832167A (en) * | 2017-01-16 | 2017-06-13 | 浙江农林大学 | The preparation method of Scrimber impregnated phenolic resin |
-
2019
- 2019-03-07 CN CN201910171617.2A patent/CN109773925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2535194B2 (en) * | 1987-12-26 | 1996-09-18 | 株式会社産業技術研究所 | How to make lightweight wood products |
| CN101642924A (en) * | 2008-08-08 | 2010-02-10 | 仇峰 | Scrimber and manufacturing method thereof |
| CN102180639A (en) * | 2011-02-24 | 2011-09-14 | 卢清友 | Environment-friendly light heat-insulating material and manufacturing method thereof |
| CN102794798A (en) * | 2012-07-30 | 2012-11-28 | 王宜梁 | Impregnation process for improving pressing performance of recombined materials |
| CN104647494A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | Production method for rubber-wood heated floor |
| CN106832167A (en) * | 2017-01-16 | 2017-06-13 | 浙江农林大学 | The preparation method of Scrimber impregnated phenolic resin |
Non-Patent Citations (4)
| Title |
|---|
| 周长庚等: "《建筑物粉刷涂装技艺》", 31 January 2005 * |
| 杜海慧: ""慈竹重组材防霉性能的研究"，杜海慧，《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》，第11期，B024-132，2012年11月15日", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 柴春鹏等: "《高分子合成材料学》", 31 January 2019 * |
| 赵家: ""环保型酚醛树脂胶粘剂的合成及其胶粘性能的研究"，赵家，《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》，第06期，B016-224， 2014年06月15日", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168791A (en) * | 2018-11-09 | 2020-05-19 | 青岛科技大学 | Preparation of reconstituted wood with water repellency properties |
| CN111168791B (en) * | 2018-11-09 | 2022-04-08 | 青岛科技大学 | Preparation of reconstituted wood with water repellency properties |
| CN110341004A (en) * | 2019-07-15 | 2019-10-18 | 天津海源汇科技有限公司 | A kind of application technique of glued board plant fiber adhesive |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109773925A (en) | A kind of preparation method of Scrimber | |
| CN101358120A (en) | Environment-friendly type alkali lignin modified phenolic resin adhesive and preparation method thereof | |
| US5728269A (en) | Board produced from malvaceous bast plant and process for producing the same | |
| CN101352860A (en) | Modification technique of synthetic resin impregnated timber | |
| CN109589779B (en) | Multifunctional bio-based formaldehyde capture agent and preparation method thereof | |
| CN106752001A (en) | A kind of imvite modified waterproof flame-retardant type biomass board and preparation method thereof | |
| CN104693679A (en) | Preparation method of nano-silica rosin modified phenolic resin | |
| US3053784A (en) | Adhesive composition comprising sodium substituted bark derivative and sodium salt of polymethylol phenol | |
| CN104118022B (en) | A kind of Wood modifier and preparation method thereof | |
| CN109366667A (en) | A kind of production method of Fireproof fire retardation type medium density fiber Special board for cabinet | |
| CN117226942A (en) | Anti-fingerprint melamine veneer and preparation process thereof | |
| CN115772383A (en) | Lignin formaldehyde-free glue and preparation method thereof | |
| RU2381244C2 (en) | Moulding material, method of obtaining thereof and method of obtaining plate materials on its basis | |
| CN109836549A (en) | A kind of bamboo wood dipping water-soluble modified phenolic resin and preparation method thereof | |
| CN109293941A (en) | A kind of depolymerization lignin and its preparation method and application | |
| CN109318333A (en) | A kind of production method of weather-proof low aldehyde type medium density fiber wardrobe personality board | |
| CN111171770B (en) | Synergistic silicon modified phenolic resin adhesive and preparation of recombined wood thereof | |
| CN111995974A (en) | Preparation method of E0-grade urea-formaldehyde glue | |
| CN111944466A (en) | Urea-formaldehyde glue for producing shaving board and preparation method thereof | |
| US2221778A (en) | Acid-resistant resin products | |
| CN111168791B (en) | Preparation of reconstituted wood with water repellency properties | |
| US2501666A (en) | Lignin resins and process of making same | |
| CN114311179B (en) | Composite multilayer board for furniture and preparation method thereof | |
| CN114350314B (en) | Waste molasses-based high-performance environment-friendly adhesive and preparation method and application thereof | |
| US20240139987A1 (en) | Method for preparing environmentally-friendly high-strength wood composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190521 |
|
| RJ01 | Rejection of invention patent application after publication |