CN104497243B - A kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood - Google Patents

A kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood Download PDF

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Publication number
CN104497243B
CN104497243B CN201410767946.0A CN201410767946A CN104497243B CN 104497243 B CN104497243 B CN 104497243B CN 201410767946 A CN201410767946 A CN 201410767946A CN 104497243 B CN104497243 B CN 104497243B
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wood
section bar
phenolic resin
bamboo
resin glue
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CN201410767946.0A
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CN104497243A (en
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姚玉林
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Anji Ming Wei Zhi Technology Co Ltd
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Individual
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Abstract

The invention discloses a kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood, comprise the steps: 1) it is stirred being mixed to form mixture by formaldehyde, phenol, sodium hydroxide, diethylene glycol and ferrous oxide, the pH value regulating described mixture by increasing sodium hydroxide is 7~8, then heats to 65~85 DEG C and reacts;2) toward step 1) in product in add formaldehyde, phenol, ferrous oxide and aluminium sesquioxide, be warming up to 85~97 DEG C after being stirred and react.Use the section bar that phenolic resin glue prepares as exterior material, do not soak, do not expand, do not ftracture, indeformable, do not go rotten and do not damage by worms, and the density superelevation of section bar, durable in use, the bamboo integrated section bar of wood can reach the effect of half porcelain.

Description

A kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood
[technical field]
The present invention relates to the integrated section bar glue field of bamboo wood, be specifically related to a kind of phenolic resin for the bamboo integrated section bar of wood Glue manufacture method.
[background technology]
Along with the development and progress of society, improving constantly of people's living standard, people live finishing increasingly to indoor Being particular about, typically other is many can use natural green environment-friendly materials to decorate, rich other not only interior decoration material say Study carefully, inhabitation outdoor gardening view is built more and more exquisite.But current global famous and precious choice wood prohibit cut down, in great shortage, And China or even the whole world are increasing to the demand of outdoor building natural timber, wood for outdoor decoration can only use through not Play the artificial anticorrosive wood of four seasons weather corrosion and be unable to undergo the low-grade timber replacement used for several years, result in outdoor dress Newly 2 years old, the situation just collapsed for 5 years for 3 years in 1 year for decorations building.
The outdoor building material used now, in addition to stone material, as needed ecological bamboo timber to build view, because energy is weather-proof First-class famous and precious timber is in great shortage, can only use cannot the low-grade timber of weatherability, as Masson Pine, Lignum seu Ramulus Cunninghamiae Lanceolatae etc., as built bamboo skill Art view, is to build with the former bamboo of log mostly, if being in outdoor, the former bamboo of log is just ftractureed mouldy general one or two years Rot.Currently also there is the exterior decoration of the timber after utilizing preservative treatment, although will not ftracture at once, but the most just It is just to go mouldy rotten in 3 or five years.Outdoor flooring a multitude of names now, example: plastic-wood floor, heavy bamboo floor and anticorrosive wood ground Plate etc., but be unable to undergo climate change more and expose to the sun and rain, within 3 or five years, the most substantially scrap at most one or two years at least.
[summary of the invention]
Finding through further investigation, the existing bamboo former material of wood does not take off through strict secondary in the integrated front course of processing Seborrheic alopecia sugar process, as outdoor open-air materials'use it is difficult to ensure that do not go mouldy and damage by worms;The glued liquid effect that impregnation is used Fruit is the most bad, is unable to undergo heat and shines the test drenched with rain with cold snap change, and the intensity of the bamboo integrated section bar of wood cannot be lasting, Easily craze and transfiguration, dilatancy, rot to fall apart;Because of present bamboo integrated the used hydraulic press pressure of wood, exist more 800~1000kg/10mm2Left and right, the section bar density that compacting is formed is 800kg/m3One 1050kg/m3Between, far away without Method keeps out being impregnated with of rainwater, rainwater being impregnated with year in year out, certainly will cause the hygral expansion of section bar and the dry change shunk, Section bar is scrapped the most completely through can't stand several years;The existing bamboo integrated section bar of wood is typically by hot-press thermosetting and warm of colding pressing Solidifying two kinds, solidification maximum temperature is arranged on 130 DEG C more, the highest is not more than more than 150 DEG C.
In order to overcome the deficiencies in the prior art, the invention provides a kind of phenolic resin glue system for the bamboo integrated section bar of wood Make method, with provide a kind of can make bamboo wooden integrated section bar be not easily susceptible to cracking, mouldy and rotten.
A kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood, comprises the steps:
1) by the formaldehyde that mass fraction is 40~60 parts, the phenol of 30~50 parts, the sodium hydroxide of 5~8 parts, 1~ The ferrous oxide of the diethylene glycol of 5 parts and 0.5~5 part is stirred being mixed to form mixture, by increasing sodium hydroxide The pH value regulating described mixture is 7~8, then heats to 65~85 DEG C and reacts;Wherein, described hydroxide Sodium needs to convert the water that mass ratio is 1:1.5~3, and described ferrous oxide needs to convert the water that mass ratio is 1:20~50;
2) toward step 1) in product in add mass fraction be the formaldehyde of 20~40 parts, the benzene of 20~30 parts Phenol, the ferrous oxide of 0.5~5 part and the aluminium sesquioxide of 0.3~3 part, be warming up to 85~97 DEG C and enter after being stirred Row reaction;Wherein step 2) in ferrous oxide need to convert the water that mass ratio is 1:20~50, step 2) in three Al 2 O needs to convert the water that mass ratio is 1:20~50.
In one embodiment, in step 2) after also comprise the steps:
3) to described step 2) in product in add sodium hydroxide solution regulation product viscosity.
In one embodiment, in step 3) after also comprise the steps:
4) by described step 3) in product control at 80~95 DEG C, adding mass fraction is the wood of 1~7 part Mahogany sulfonate is stirred.
In one embodiment, in described step 1) in, after temperature is warming up to 65~85 DEG C, it is incubated 50~90min React.
In one embodiment, in step 1) and step 2) between, by step 1) reaction temperature drop to 45~ 60℃。
In one embodiment, in step 2) in, it is incubated 45~100min after being warming up to 85~97 DEG C and reacts.
In one embodiment, in step 2) afterwards and in step 3) before, reaction temperature is down to 45~60 DEG C.
In one embodiment, also comprise the steps:
To described step 2) in product in add sodium hydroxide solution regulation product pH value be 7~9.
In one embodiment, after reaction temperature is down to 45~60 DEG C, further product temperature is down to 20~ 35 DEG C of viscosity carrying out sampling test reaction product.
In one embodiment, in described step 3) in, reaction temperature is controlled at 55~95 DEG C.
The invention has the beneficial effects as follows: after have employed above-mentioned phenolic resin glue, this bamboo integrated section bar of wood prepared is as family Outer material, almost can reach following performance under any weather conditions: do not soaks, do not expand, ftracture, constant Shape, not going rotten and do not damage by worms, and the density superelevation of section bar, durable in use, the bamboo integrated section bar of wood can reach half porcelain The effect changed.So-called half porcelain of the present invention, refers to that the bamboo integrated section bar of wood has some performances of similar pottery, if not Immersion, without putrefaction etc..
[detailed description of the invention]
Preferred embodiment to invention is described in further detail below.
The phenolic resin glue manufacture method for the bamboo integrated section bar of wood of a kind of embodiment, comprises the steps:
(1) take formaldehyde 40~60 parts (mass fraction, lower with), phenol 30~50 parts, sodium hydroxide (liquid caustic soda or Sheet alkali) 5~8 parts (being watered 1:1.5~3), diethylene glycol 1~5 parts and ferrous oxide 0.5~5 parts (be watered 1:20~ 50, i.e. ferrous oxide: water is 1:20~50 (mass fraction ratio)), stir in then said mixture is added reactor After Jun Yun again by add liquid caustic soda or sheet alkali regulation mixture pH value be 7~8, then heat to 65~85 DEG C, so Rear insulation reaction 50~90min, during insulation, temperature also controls in the range of 65~85 DEG C.
(2), after insulation 50~90min, after temperature drops to 45~60 DEG C, whether test fluid adhesiveness reaches required standard Requirement.Formaldehyde 20~40 parts, phenol 20~30 parts, ferrous oxide is added again in the product in step (1) 0.5~5 part, aluminium sesquioxide 0.3~3 parts (ferrous oxide and aluminium sesquioxide are respectively watered 1:20~50), stirring Being warming up to 85~97 DEG C after Jun Yun, insulation reaction 45~100min, during insulation, temperature controls at 85~97 DEG C.
If the formaldehyde additionally added in step (1) in step (2) and ferrous oxide, due in step (1) Reaction temperature is less than step (2), and the product that step (1) can be caused to be formed is aging, caking.Accordingly, it would be desirable to After formaldehyde in step (1) and ferrous oxide fully react, then in step (2), add corresponding composition and proportioning.
(3), after insulation 45~100min has been reacted, it is cooled to 45~60 DEG C.Negate the liquid sample that should obtain to be cooled to After 20~35 DEG C, carry out whether test fluid adhesiveness reaches required standard-required, by adding liquid caustic soda in product Or the pH value of sheet alkali regulation product is 7~9.If taking liquid sample test fluid adhesiveness not reach required standard-required, Need the sheet alkali liquor body after adding liquid caustic soda in product or being watered, after stirring, temperature is risen to 55~95 DEG C, then Sampling cools to 25~35 DEG C of re-test sol viscosity, until viscosity reaches required standard-required.
(4), after test fluid adhesiveness reaches required standard-required, temperature in reactor, is kept also to control at 80~95 DEG C Time, the lignosulfonates placing into 1~7 part stir.
(5) test fluid adhesiveness reaches required standard-required, cools to less than 45 DEG C and i.e. obtains for bamboo wood integrated-type The phenolic resin glue of material, can be referred to as " number phenolic resin glue of porcelainization ", and " number phenolic resin glue of porcelainization " is in thoroughly Bright pink, tasteless, not without pungent the most dazzling.
The manufacture method of the bamboo integrated section bar of wood of a kind of embodiment, comprises the steps:
(1) according to bamboo thick bamboo tube diameter, with save most the principle of material bamboo segmentation be sawn into 1m, 2m and 3m this three Kind different length specifications, according to thick bamboo tube diameter, carries out thick bamboo tube split or four opens the six bamboo cane sheets opened.
(2) bamboo green grass or young crops, the ring of inwall and the Concretio silicea Bambusae seu schizostachyi of the bamboo chip outer layer being split into bar are removed.
(3) through step 2) after bamboo chip crush and be broken into grenadine shape, broken and constantly keep bamboo fibre net to be still connected.
(4) grenadine shape bamboo chip is put in the boiling water of capped container and boil, add (quality or mole) concentration in boiling water It is " hydrogen peroxide " of 0.5%.Owing to, in this step, bamboo chip boils in capped container, boil the process of bamboo chip and common electricity The process of cooking of rice cooker is identical, thus, (time is past to carry out boiling bamboo chip in the outdoor container do not added a cover with existing utilization Toward the longest such as 10 hours) method compare, this method not only saves the energy but also time-consuming, in certain embodiments, this Method can save the burning energy of more than 50%, shortens again the digestion time of 50%.And the existing outdoor appearance do not added a cover Device boils bamboo chip, and the effect of its desaccharide sterilization is the most very limited.And this method remove more up hill and dale the sugar in bamboo chip body, Protein, starch etc. are easily corrupt or cause the Organic substance of snake, and thoroughly kill all of worm's ovum in bamboo chip and Harmful levels of pathogens, can effectively ensure that the effect that bamboo wood integrated timber half porcelainization uses.
(5) in being directly entered the retort of High Temperature High Pressure with the bamboo chip after boiling water steaming and decocting, carbonization is carried out.Current indoor The carbonization air pressure of the bamboo integrated section bar of wood arranges pressure 3~3.5/kp, and maximum temperature is arranged on 110 DEG C~130 DEG C.And this In step, the air pressure in retort is 4.5~5.4/kp, and maximum temperature is arranged on 140 DEG C~160 DEG C.This is big to bamboo wood The secondary thorough desaccharide deproteinization of material and starch etc. play significant role, and more thorough to the sterilization and disinsection ovum in big material. The outdoor use of this bamboo integrated section bar of wood to making serves again a key effect.
(6) bamboo chip after carbonization is shone with the sun dry, or dry with large-scale drying plant mechanization streamline, dry After bamboo chip moisture content all must not be beyond 8~10%.
(7) bamboo chip after drying is carried out applying glue, be i.e. stained with the phenolic resin glue of above-described embodiment.The most all use With impregnation, it is convenient and swift for soaking glue great advantage, and disadvantage is that cloth glue is uneven, the bamboo above soaked especially Sheet glue relative concentration is higher, and the bamboo chip above soaked due to a part of glue adsorbs, if supplementing glue not in time, The glue concentration of the bamboo chip absorption put into below is the lowest, so absolute to the quality manufacturing the bamboo integrated section bar of wood obtained Being a fatal defect, such as, the intensity of the integrated section bar of different parts is different, therefore cannot use out of doors.
(8) the bamboo integrated profile length of wood of compacting at present all can only be at 1.8~2 meters, and it cannot become mark because of length limitation Standardization construction material, the deep use to the bamboo integrated section bar of wood defines bottleneck.
Bamboo chip after applying glue is dried.Bamboo chip spreading after first applying glue being dried before compaction is to building standard material 4~6 meters, make to be docked by zero difference between the bamboo chip of spreading, and will not disconnect, connect by high pressure integrated bamboo wood Section bar even density, that position, without departing from and reaching the seamless effect docked completely, cannot be found with eyes in joint It is joint, and directly to close the most identical integrated with natural whole piece fiber of pulling force and bending strength.
(10) the bamboo chip after docking, it is pressed in loading hydraulic press module and obtains the bamboo integrated section bar of wood.Pressure System can use hot pressing direct heat cure molding or two kinds of methods of heat cure molding of colding pressing.
(11) for making the above-mentioned bamboo integrated section bar of wood be more suitable for as construction material, and more preferable half porcelain effect is reached, Need to increase the density of integrated timber.Much more typically the production board density of current wood glue plate, medium-density plate and high-density plate exist 600kg~800kg/m3, bamboo wood integrated timber density is at 900kg~1050kg/m3.And this bamboo wood integrated section bar compacting after close Degree reaches 1100kg~1300kg/m3, considerably increases intensity and hardness, thus is more suitable for outdoor architecture.
(12) the bamboo integrated section bar of wood after high pressure is solidified.The highest solidification temperature is maintained at about 130 DEG C more now. And in this step, phenolic resin glue solidification temperature need to reach 150 DEG C~200 DEG C.
Owing to adding diethylene glycol in the formula of phenolic resin glue, can quickly make described phenolic aldehyde when pyroreaction solidifies The various compositions of resin glue are more uniformly dispersed, and more efficiently penetrate in each trickle bamboo and woods fiber aspect, So that adhesion is more efficient uniformly between bamboo and woods fiber.
Owing to adding ferrous oxide, during hot setting molding, ferrous oxide energy in the formula of phenolic resin glue It is greatly increased the integrated intensity of bamboo and woods fiber and hardness, makes to be difficult to peel off between the fiber in the bamboo integrated section bar of wood of formation, Enhance the bond degree of the bamboo integrated section bar of wood, and the water resistance that has been multiplied.Meanwhile, because of ferrous oxide and bamboo wood Fiber effectively combines, and the bamboo integrated section bar of wood more enhances weather resistance.
Owing to the addition of aluminium sesquioxide in the formula of phenolic resin glue, in bamboo and woods fiber, combine aluminium sesquioxide, with Sample can strengthen wear-resisting, the shock resistance of the bamboo integrated section bar of wood and anti-rotten characteristic, and the bamboo integrated section bar of wood is reached weather-proof Arrive important function.
With the addition of lignosulfonates in the formula of phenolic resin glue, the product hardness of the bamboo integrated section bar of wood can be strengthened, subtract Water, viscose properties, prevent the bamboo integrated section bar craze and transfiguration of wood.
(13), after to the demoulding after the bamboo wood integrated section bar cooling after solidification, the bamboo integrated section bar of wood is taken out.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, Without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, should be all considered as belonging to this The scope of patent protection that invention is determined by the claims submitted to.

Claims (8)

1., for a phenolic resin glue manufacture method for the bamboo integrated section bar of wood, it is characterized in that, comprise the steps:
1) it is stirred being mixed to form mixture by the ferrous oxide of the formaldehyde that mass fraction is 40~60 parts, the phenol of 30~50 parts, the sodium hydroxide of 5~8 parts, the diethylene glycol of 1~5 part and 0.5~5 part, the pH value regulating described mixture by increasing sodium hydroxide is 7~8, is incubated 50~90min and reacts after then heating to 65~85 DEG C;Wherein, described sodium hydroxide needs to convert the water that mass ratio is 1:1.5~3, and described ferrous oxide needs to convert the water that mass ratio is 1:20~50;
2) toward step 1) in product in add mass fraction be the formaldehyde of 20~40 parts, the phenol of 20~30 parts, the ferrous oxide of 0.5~5 part and the aluminium sesquioxide of 0.3~3 part, be incubated after being warming up to 85~97 DEG C after being stirred and 45~100min react;Wherein step 2) in ferrous oxide need to convert the water that mass ratio is 1:20~50, step 2) in aluminium sesquioxide need to convert the water that mass ratio is 1:20~50.
2. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 1, is characterized in that, in step 2) after also comprise the steps:
3) to described step 2) in product in add sodium hydroxide solution regulation product viscosity.
3. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 2, is characterized in that, in step 3) after also comprise the steps:
4) by described step 3) in product control at 80~95 DEG C, adding mass fraction is that the lignosulfonates of 1~7 part are stirred.
4. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 1, is characterized in that, in step 1) and step 2) between, by step 1) reaction temperature drop to 45~60 DEG C.
5. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 2, is characterized in that, in step 2) afterwards and in step 3) before, reaction temperature is down to 45~60 DEG C.
6. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 2, is characterized in that, also comprise the steps:
To described step 2) in product in add sodium hydroxide solution regulation product pH value be 7~9.
7. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 5, is characterized in that, after reaction temperature is down to 45~60 DEG C, product temperature is down to 20~35 DEG C of viscosity carrying out sampling test reaction product further.
8. the phenolic resin glue manufacture method for the bamboo integrated section bar of wood as claimed in claim 2, is characterized in that, in described step 3) in, reaction temperature is controlled at 55~95 DEG C.
CN201410767946.0A 2014-12-12 2014-12-12 A kind of phenolic resin glue manufacture method for the bamboo integrated section bar of wood Expired - Fee Related CN104497243B (en)

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