CN103737692A - Sympodial bamboo integration profile manufacturing method - Google Patents
Sympodial bamboo integration profile manufacturing method Download PDFInfo
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- CN103737692A CN103737692A CN201410023869.8A CN201410023869A CN103737692A CN 103737692 A CN103737692 A CN 103737692A CN 201410023869 A CN201410023869 A CN 201410023869A CN 103737692 A CN103737692 A CN 103737692A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K1/00—Damping wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
- B27K5/009—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C using a well-defined temperature schedule
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
Abstract
The invention discloses a sympodial bamboo integration profile manufacturing method. The method is characterized by including the following steps: S1, soaking bamboo filaments of sympodial bamboo which are subjected to green planing and yellow removing in water for high-temperature stewing at temperature of 100-120 DEG C for at leat four hours, wherein the water contains, by mass, 5-10% of hydrogen peroxide and 0.5-1% of sodium hydroxide; S2, disposing wet bamboo filaments in a carbonization furnace for carbonizing at temperature of 130-15o DEG C and at pressure of 3-4 MPa for 4-6 hours; S3, drying for the first time, dipping in glue, and drying for the second time after glue dipping; S4, performing high-pressure forming at pressure of being not less than 1.2 t/cm2; S5, performing thermosetting for more than 10 hours at temperature of 80-150 DEG C under the condition that the pressure of being not less than 1.2 t/cm2 is maintained. By the sympodial bamboo integration profile manufacturing method, sympodial bamboo integration profiles meeting structural profile requirements can be manufactured.
Description
Technical field
The present invention relates to bamboo wood moulding process, especially relate to the manufacture method of the integrated section bar of a kind of Cluster Bamboo.
Background technology
Along with the mankind's progress and social fast development, people are more and more higher to inhabitation and living condition requirement, also more and more superior to life inhabitation articles for use.Especially the fast development of all kinds of daily life high-tech products in the world today, has promoted human society life diversification.People's material progress and living standard have been improved fast.So people are increasing to the demand of timber.Especially developing country is for meeting domestic demand development, imported timber in enormous quantities, otherwise less developed country is in order to survive a large amount of outlet timber, unordered felling has caused the heavy damage of Global Forests resource.Some wood material species is deficient exhausted.A large amount of felling destroyed the forest reserves, Global Ecological balance caused to serious unbalance, and the living environment that threatens the mankind has caused harsh weather variation.In order to keep ecological balance, green low-carbon life.The country that much there is bamboo timber resource in the whole world, also places on the agenda to the utilization of bamboo resource.Especially good effect has played to the comprehensive utilization of bamboo wood in China.People more and more admit the concept of " wood substituted by bamboo ".To the various product of " wood substituted by bamboo " also more and more favor.This to protecting forest resources, a low-carbon environment-friendly life good start beyond doubt." wood substituted by bamboo ", " with bamboo victory wood ", " with bamboo for steel " are the inexorable trends of social development, are the inevitable outcomes of human progress.It is the continuous guarantee of green low-carbon life of preserving our planet.
Bamboo wood is often to give birth to for many years this plant of tallgrass that fast-growing is become a useful person, and is applicable to artificial growth, and cultivation cost is low.Because of its breeding fast growth, the cycle of becoming a useful person is short, bamboo fibre good toughness, and anti-pressure ability is strong, can take turns second mining and cut down once and for all after bamboo grows into forest.And very most of bamboo then new born bamboo shoots are edible delicacies.As long as can be applicable to many can the plantation in the raw growth environment of bamboo area.The bamboo growing into forest is can topped mountain region without stop, and bamboo is evergreen all the year round row mountain Ru Hai has not only protected soil erosion but also beautified natural environment.Finished product bamboo wood completes through modern means of science and technology process technology can; The boundary of " wood substituted by bamboo ", " with bamboo victory wood ", " with bamboo for steel " and had it.So various bamboos of more effective comprehensive utilization how? it is a strategic problem that has far-reaching society and economic implications.
Now bamboo timber resource comprehensive development and utilization has been arrived the level of " wood substituted by bamboo ", but what generally develop now is only the bamboo of " scattered bamboo " bamboo kind the inside, and branch thick bar is high, bamboo is assisted thicker, and Cluster Bamboo (for example imperial bamboo) resource that resource is better than bamboo there is no and effectively developed.Bright to global bamboo resource investigation statistics Check according to International Bamboo Organization, global Cluster Bamboo resource is tens times of scattered bamboo.Is but why bamboo well utilizing? and is Cluster Bamboo to not yet finely utilizing so far? its reason is: scattered bamboo (for example bamboo) and Cluster Bamboo (for example imperial bamboo) are though belong to bamboo class together because of their raw growth environments and to generate long physical characteristic difference very large.So processing Cluster Bamboo with the specification requirement of processing bamboo cannot accomplish.
Summary of the invention
Technical problem to be solved by this invention is, the manufacture method of the integrated section bar of a kind of Cluster Bamboo is provided, and cannot obtain the problem of the qualified integrated section bar of Cluster Bamboo to solve existing preparation method.
People are often mixed into identical bamboo kind Cluster Bamboo and two kinds of bamboo classes of bamboo, think that the common practise of bamboo patent is suitable for use in the processing technology of Cluster Bamboo equally.But empirical tests, the integrated-type material processing method of bamboo is applied to Cluster Bamboo and the section bar prepared, the defect such as have easy strain cracking, expand, go mouldy.In order to obtain the resource utilization method of Cluster Bamboo, the inventor studies, analyzes, contrasts in all many-sided difference Cluster Bamboo and bamboo, and make on this basis the present invention, for ease of understanding, below analysis result related to the present invention is introduced, but these contents are not existing known technological know-how, and study acquisition through inventor, thereby, in the situation that formerly not disclosing evidence, should not evaluate creativeness of the present invention as prior art.
It is Cluster Bamboo and scattered bamboo that whole world bamboo is divided into two large classes.In two large class bamboo kinds, diameter is greater than 8 centimetres, and length is at the more than 6 meters bamboos that just has scattered bamboo bamboo kind the inside and the Long Zhu in Cluster Bamboo kind etc.That utilizes now only has bamboo because its bamboo quality meets the industrialization processing request of " wood substituted by bamboo ".Cause and bamboo growth climatic environment are completely different with the raw growing method of breeding.So the growth period of this two classes bamboo kind is also different, physical arrangement and fiber molecule tissue content are also different.The technological method for processing that can find both based on following analysis definitely can not be on an equal basis and theoretical.
(1) difference of weather geographical conditions and raw law of development
(1) scattered bamboo (following bamboo is example), bamboo belongs to this plant of tallgrass.The area of should growing is to be mainly distributed in the middle and lower reach of Yangtze River of China and some coastal areas.It is abundant that bamboo generates the long weather conditions rainfall that will make a clear distinction between the four seasons, between preference temperature-5 °～+ 35 °.Bamboo growth has dividing of biennial bearing, many must the rooting out of bamboo shoots of birth in off year, and bamboo needs within 2 years, just to cultivate a Hsinchu and becomes a useful person.Bamboo will experience the cold season of at least 4 months within 1 year, needed 6 years ripe fellings.
(2) " Cluster Bamboo " (take imperial bamboo as example) is this plant of tallgrass too.Long Zhuyi generates long south subtropics and some torrid areas of being mainly distributed in, the Yunnan Province of China and Hainan Province and cities of Guangdong area.Southeast Asian countries resource is particularly abundant.It is relatively high that Cluster Bamboo hobby is grown in daytime temperature, and evening, water spray haze was stronger, and moisture is area plentifully.Its fatal weakness is exactly to be afraid of very much cold, and temperature just cannot be survived below at-0 °.Preference temperature is between+12 °～+ 35 °.Because climate reasons does not resemble bamboo, there is not dividing of biennial bearing, have every year Hsinchu to grow up to.Because there is no severe winter, add that south subtropics has sufficient moisture, Cluster Bamboo only needed 4 years, than bamboo whole shortening of ripe cutting cycle 2 years.Cluster Bamboo (imperial bamboo is example) branch thick bar Gao Zhu assists thick, and the product bamboo amount of annual every mu is at least the more than 8 times of bamboo.
(2) breeding physiology characteristic difference
(1) Cluster Bamboo (imperial bamboo is example) physiological property: the new bamboo shoot of imperial bamboo are unearthed growth period, be generally mid-June at the Gregorian calendar then to completing by the end of July, because be South Subtropical Area of China rainy season this season, moisture is more abundant.The nascent young bamboo shoot bud of dragon bamboo has abundant moisture, and Hsinchu is grown up very swift and violent.Dragon bamboo is that tight note is attached to female bamboo body root periphery, under soil 10～30 centimetres some is even more shallow, according to after the female bamboo bamboo root development of symbol gradually step grow up and have a bamboo of one's own.Near the constantly outwards development of female bamboo surrounding.How a female bamboo generally can grow 2-3 Hsinchu then becomes to grow into useful timber.
(2) physiological property of scattered bamboo: bamboo is that female bamboo root length has a bamboo whip, bamboo whip female bamboo of ining succession, greatly under soil 30～50 centimetres some even more deeply stretch out, on the ring of every bamboo whip, how long there is new bamboo shoot bud, as long as bamboo starts to have at the lunar calendar condition that new bamboo shoot blastogenesis is grown up that meets March, new bamboo shoot bud will be broken through the soil into and be grown into useful timber.Because scattered bamboo is that bamboo whip by female bamboo root extends to the periphery, formed and scatteredly on hill, independently become a useful person.It leaves the outward extending physiological property of parent by bamboo whip, brings up it and disobeys the female bamboo body of symbol and independently become to grow into useful timber.
(3) difference of physical arrangement and molecular organization (take bamboo and imperial bamboo are example)
(1) it is widely different that bamboo generates long geographical environment and the long weather conditions of generation and imperial bamboo, and its growth maturity period of bamboo will be experienced six spring, summer, autumn and winter, and fibre density is just higher, and the density of 6 years bamboos that become a useful person approximately can reach 0.7～0.8.g/cm
3.Bamboo pole length because of the restriction bamboo of weather conditions: general many below 8～9m from root to the bamboo tip, really can be processed into available former bamboo that bamboo board uses at most also just at 6～7m.The physiological property of bamboo and geographic climate limitation reason, its bamboo is assisted also very thin, by diameter 12cm, the bamboo of length 9m, its bamboo assists average wall thickness also can not surpass 1.2cm.So bamboo can utilize material just suitable limited.Bamboo is also long for a long time because of its generation, experience six days, wants uprising snow winter, wants wind resistance etc. factor summer and autumn, for adapt to survival ability bamboo through not thick, the not high and root of branch bar to the large fine taper 3～4cm of the bamboo tip above with regard to clearly.Closeer for wind resistance snow bamboo ring and slub space, the outstanding ring of bamboo body is put down low.Former hard bamboo fiber is thin, bamboo fibre flexible.Because of physical organization's architectural characteristic of bamboo, by people, be directly used for being made into daily necessities and construction material over the past thousands of years always.
(2) generation of imperial bamboo is managed amblent air temperature condition and bamboo makes a big difference too longways.Dragon bamboo first its long temperature of generation average more than+20 ° of left and right.Unlike bamboo to just to enter resting state no longer ripe winter.But throughout the year all in the maturation of growing up, be not subject to high wind and crushing by snow and very abundant at South Subtropical Area of China rainfall yet.So that grows up is fast especially, maturation age is also corresponding shortens 2 years than bamboo.Physical organization's structure and the bamboo of Cluster Bamboo just have very large difference:
1. general general some diameter of 12～15cm left and right that reaches of the thick diameter of Cluster Bamboo branch can reach more than 20 centimetres.
2. Cluster Bamboo " a branch bar height can reach more than 18 meters, and what have reaches more than 20 meters.Ring and slub space are opened very much, are the twice of bamboo fully, and bamboo bar the whole body is well-balanced to upper position size from root.More than more than 10 meters could go out respectively taper.
The bamboo of Cluster Bamboo assist from root upwards within least 8 meters average thickness many in 2cm left and right, within 4 meters of roots, its bamboo assists wall thickness to have 3～5cm at least.
4. Cluster Bamboo is short for a long time because generating, and the fast moisture of raw growth rate is sufficient, thus bamboo fibre thicker, density is not high, about 0.5～0.6g/cm
3, bamboo fibre better softness, Cluster Bamboo and bamboo ratio, anti-epistasis Cluster Bamboo in the situation that of equivalent diameter at least will be weaker than bamboo 35%.The water content of the former bamboo of Cluster Bamboo is also high by 25% compared with bamboo.From above numeral, to contrasting, can draw: two bamboo kinds of equivalent diameter, the individual cigarette weight of Cluster Bamboo is at least the more than a times of bamboo weight.
(4) contrast of molecular organization mechanism
The factor with weather conditions is managed in the generation of Cluster Bamboo and bamboo longways, and the molecular organization mechanism of Cluster Bamboo is very large with " bamboo " difference:
1. the former bamboo moisture content of Cluster Bamboo height approximately exceeds bamboo 25% more than.
2. the former bamboo sugar content of Cluster Bamboo exceeds bamboo approximately 0.8% left and right.
3. the former bamboo of Cluster Bamboo does not approximately exceed bamboo 0.3～0.5% not etc. containing protein and starch.
4. the former bamboo fibre density of Cluster Bamboo is less than about bamboo 0.3g/cm3 left and right.
5. the former bamboo of Cluster Bamboo is approximately higher than between bamboo 0.5% containing plum acid.
6. the former bamboo of Cluster Bamboo is less than about between bamboo 0.3-0.5% containing alkali.
7. Cluster Bamboo bamboo fibre slightly approximately exceeds bamboo 25% left and right.
The molecular organization of " Cluster Bamboo " and " bamboo " contrast can show above, and bi-material group of molecules is woven with obvious difference.So complete " Cluster Bamboo " integrated and processing and manufacturing by the method for processing " bamboo ", cannot reach product acceptance criteria.Just because of " Cluster Bamboo " physical organization's structure and molecular organization characteristic reason are not directly used for being made into daily necessities and construction material by people over the past thousands of years always yet.The glue of " Cluster Bamboo " use " bamboo " more cannot reach integrated matter mark.
Under the prerequisite in conjunction with above-mentioned research and great many of experiments, the present invention solves aforementioned technical problem by following method:
A manufacture method for the integrated section bar of Cluster Bamboo, comprises the following steps:
S1, Cluster Bamboo bamboo silk plane is blue or green, de-etiolation are dipped in and in water, carry out thermophilic digestion, and for the water of boiling, containing mass percent is 5%～10% hydrogen peroxide and 0.5%～1% NaOH, and boiling temperature is 100 ℃～120 ℃, and digestion time is no less than 4 hours;
S2, the wet bamboo silk through step S1 thermophilic digestion is placed in to retort carries out carbonization, carburizing temperature is 130 ℃～150 ℃, carbonization time 4-6 hour, and pressure during carbonization is 3-4MPa;
S3, the bamboo silk after carbonization is dried for the first time, then, by the bamboo silk impregnation after drying for the first time, after impregnation, dry for the second time;
S4, the bamboo silk of drying is for the second time packed in mould and carries out high-pressure molding, the pressure of high-pressure molding is not less than 1.2 tons/square centimeter;
S5, by the section bar of high-pressure molding in the not demoulding to keep carrying out heat cure sizing under the condition of described pressure, heat cure shaping time is more than 10 hours, heat cure setting temperature is 80-150 ℃.
Compared with prior art, the present invention is carrying out thermophilic digestion by step S1, and add therein appropriate hydrogen peroxide and NaOH, and can play on the one hand the effect of good sterilization, softening ring, balance bamboo wood, can deviate from the other hand protein in bamboo wood, starch, sugar etc.; And adopt in step S2, wet bamboo is carried out to high temperature, high pressure carbonization, can protein unnecessary in bamboo wood, starch, sugar be separated out by the moisture in wet bamboo; And in high-pressure molding process, adopt the pressure of 1.2 tons/square centimeter, 10 hours above heat cure shaping times, final and other step 1 are same has guaranteed that last section bar can reach the equal quality index of existing bamboo section bar, there is high density, and the beneficial effect that is difficult for easy strain cracking, expands, goes mouldy.
Preferably:
In described step S5, heat cure sizing is divided into 3-4 stage according to time order and function, and the temperature in each stage improves successively, and each stage maintains 2-4 hour.
Boiling temperature in described step S1 is 110 ℃.
In described step S3, the component of impregnation glue used comprises resin glue, and described resin glue comprises: formaldehyde, phenol, anhydrous sodium sulfate, urea, oleic acid, colophony powder and water, also comprise propane diols, and liquid caustic soda or sheet alkali.
Preferably:
Each component of described resin glue comprises according to quality meter:
Formaldehyde 70-110 part
Phenol 40-60 part
Anhydrous sodium sulfate 10-35 part
Urea 10-25 part
Oleic acid 3-8 part
Colophony powder 1-3 part
Water 35-60 part
Propane diols 1-5 part
Liquid caustic soda or sheet alkali 8-14.
Described liquid caustic soda is water content lower than any one or two or more mixtures in the ammonium hydroxide of 1 quality %, NaOH, potassium hydroxide, barium hydroxide; Described alkali is any one or the two or more mixtures in ammonium hydroxide, NaOH, potassium hydroxide, barium hydroxide.
Further:
Described resin glue is the resin glue of preparing by the following method:
S11, get 15～25 parts, 50～70 parts, formaldehyde, 40～60 parts of phenol, 1～5 part of propane diols, liquid caustic soda or 5～8 parts, sheet alkali, water and add after stirring in reactor that to regulate the pH value of mixture be 7～8 by adding suitable quantity of water, liquid caustic soda or sheet alkali, then be warming up to 65～85 ℃, then insulation reaction 70～100min, during insulation, temperature is also controlled within the scope of 65～85 ℃;
After S21, insulation 70～100min, by adding the pH value of suitable quantity of water, liquid caustic soda or sheet alkali adjusting product, be 7～8, then cool to 65～70 ℃;
S31, temperature drop to after 65～70 ℃, in product, add 20～40 parts, formaldehyde, and 10～35 parts of anhydrous sodium sulfates, are warming up to 80～85 ℃, insulation reaction 80～100min after stirring;
S41, reacted after, the pH value that regulates product by adding suitable quantity of water, liquid caustic soda or sheet alkali is to be cooled to 55～65 ℃ after 7～9, then in product, add 10～25 parts, urea, after stirring, temperature is risen to 55-70 ℃, add inside again 3～8 parts of oleic acid, 3～6 parts of liquid caustic soda, 20～35 parts, water, after stirring, be warming up to 85～99 ℃ and be incubated 60～100min;
S51, insulation cool to 45～50 ℃ after 60～100min, then more than adding and stirring 30min after the colophony powder of 1～3 part, cool to 45 ℃ and obtain below the integrated section bar resin glue of Cluster Bamboo after having stirred.
Described glue is that described resin glue and water are according to mass ratio 1:(0.7-0.9) mix.
The sizing material of aforementioned preferred version is in conjunction with Cluster Bamboo design feature, in resin glue, added anhydrous sodium sulfate, oleic acid, propane diols, the materials such as colophony powder, in this modified alkyd resin glue, add anhydrous sodium sulfate can remove fast moisture unnecessary in integrated bamboo wood when pyroreaction is solidified, in the process of high-temperature molding, oleic acid oxidation can increase the hardenability of section bar, simultaneously owing to having added colophony powder, increased the adhesive strength of phenolic resin glue, Cluster Bamboo bamboo fibre bonding capacity is strengthened greatly, the integrated section bar of Cluster Bamboo of manufacturing is difficult for craze and transfiguration, weatherability is high, it is low that dipping is peeled off rate, the bonding tight water suction that is difficult for, Peng's expansion factor is little and be difficult for going mouldy.And propane diols coordinates anhydrous sodium sulfate and other components, can impel the sol being absorbed by bamboo chip to solidify lower rapid dispersion in pyroreaction, make each position that is impregnated into every bamboo chip of sol composition balance, thereby it is consistent to reach the inside and outside bonding strength of integrated Cluster Bamboo section bar.
The specific embodiment
Below in conjunction with preferred embodiment the invention will be further described.
A manufacture method for the integrated section bar of Cluster Bamboo, comprises the following steps:
First the former bamboo of Cluster Bamboo is carried out to length saw bamboo, broken bamboo itemize, bamboo cane and digs blue or green de-etiolation and divide Yarn having laminated structure to obtain Cluster Bamboo bamboo silk, then according to following step, prepare integrated section bar:
S1, Cluster Bamboo bamboo silk plane is blue or green, de-etiolation are dipped in and in water, carry out thermophilic digestion, for the water of boiling, containing mass percent is 5%～10% hydrogen peroxide and 0.5%～1% NaOH, boiling temperature is 100 ℃～120 ℃, and optimum temperature is 110 ℃, and digestion time is no less than 4 hours.
S2, the wet bamboo silk through step S1 thermophilic digestion is placed in to retort carries out carbonization, carburizing temperature is 130 ℃～150 ℃, carbonization time 4-6 hour, and pressure during carbonization is 3-4MPa.In this step: carbonization pressure cannot make protein in bamboo, starch, sugar etc. fully separate out lower than 3MPa; Do not adopt wet bamboo cannot fully separate out protein, starch, sugar too.
S3, the bamboo silk after carbonization is dried for the first time, then, by the bamboo silk impregnation after drying for the first time, after impregnation, dry for the second time.First drying impregnation contributes to glue fully to immerse bamboo wood inside again.
S4, the bamboo silk of drying is for the second time packed in mould and carries out high-pressure molding, the pressure of high-pressure molding is not less than 1.2 tons/square centimeter.In this step, if pressure is less than 1.2 tons/square centimeter, the bamboo wood of final molding is loose and dilatancy easily, and density is on the low side.
S5, the section bar of high-pressure molding is kept in the not demoulding under the condition of described pressure, carry out heat cure sizing, heat cure shaping time is more than 10 hours, and heat cure setting temperature is 80-150 ℃.This step preferably adopts stage by stage carries out, and according to time order and function, whole process is divided into 3-4 stage, and the temperature in each stage improves successively, the holding time as 2-4 hour of each stage.For example: first 80 ℃ of heat cures 2 hours, be then warming up to 100 ℃ of heat cures 3 hours, then be warming up to 130 ℃ of heat cures 3 hours, be finally warming up to 150 ℃ of heat cures 2 hours.
In described step S3, the component of impregnation glue used comprises resin glue, and described resin glue preferably includes: formaldehyde, phenol, anhydrous sodium sulfate, urea, oleic acid, colophony powder and water, also comprise propane diols, and liquid caustic soda or sheet alkali.Each component comprises according to quality meter: formaldehyde 70-110 part, phenol 40-60 part, anhydrous sodium sulfate 10-35 part, urea 10-25 part, oleic acid 3-8 part, colophony powder 1-3 part, water 35-60 part, propane diols 1-5 part, liquid caustic soda or sheet alkali 8-14.Wherein said liquid caustic soda is water content lower than any one or two or more mixtures in the ammonium hydroxide of 1 quality %, NaOH, potassium hydroxide, barium hydroxide; Described alkali is any one or the two or more mixtures in ammonium hydroxide, NaOH, potassium hydroxide, barium hydroxide.
In more excellent embodiment, aforementioned resin glue adopts following method to prepare:
S11, get 15～25 parts, 50～70 parts, formaldehyde, 40～60 parts of phenol, 1～5 part of propane diols, liquid caustic soda or 5～8 parts, sheet alkali, water and add after stirring in reactor that to regulate the pH value of mixture be 7～8 by adding suitable quantity of water, liquid caustic soda or sheet alkali, then be warming up to 65～85 ℃, then insulation reaction 70～100min, during insulation, temperature is also controlled within the scope of 65～85 ℃;
After S21, insulation 70～100min, by adding the pH value of suitable quantity of water, liquid caustic soda or sheet alkali adjusting product, be 7～8, then cool to 65～70 ℃;
S31, temperature drop to after 65～70 ℃, in product, add 20～40 parts, formaldehyde, and 10～35 parts of anhydrous sodium sulfates, are warming up to 80～85 ℃, insulation reaction 80～100min after stirring;
S41, reacted after, the pH value that regulates product by adding suitable quantity of water, liquid caustic soda or sheet alkali is to be cooled to 55～65 ℃ after 7～9, then in product, add 10～25 parts, urea, after stirring, temperature is risen to 55-70 ℃, add inside again 3～8 parts of oleic acid, 3～6 parts of liquid caustic soda, 20～35 parts, water, after stirring, be warming up to 85～99 ℃ and be incubated 60～100min;
S51, insulation cool to 45～50 ℃ after 60～100min, then more than adding and stirring 30min after the colophony powder of 1～3 part, cool to 45 ℃ and obtain below the integrated section bar resin glue of Cluster Bamboo after having stirred.
In preferred embodiment, in step S3, glue used is that resin glue and water prepared by preceding method mixes according to mass ratio 1:0.7-0.9, and preferred resin glue and water proportioning ratio are mass ratio 1:0.85.
The resin glue that adopts preceding method to prepare is transparency liquid, stable performance, and glue performance is strong, good weatherability, it is very low that dipping is peeled off rate, and curing rate is fast, this resin glue is for the integrated section bar of Cluster Bamboo, and the bamboo profile intensity of gummed can reach the requirement of strength of structural wood completely.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some being equal to substitute or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a manufacture method for the integrated section bar of Cluster Bamboo, is characterized in that, comprises the following steps:
S1, Cluster Bamboo bamboo silk plane is blue or green, de-etiolation are dipped in and in water, carry out thermophilic digestion, and for the water of boiling, containing mass percent is 5%～10% hydrogen peroxide and 0.5%～1% NaOH, and boiling temperature is 100 ℃～120 ℃, and digestion time is no less than 4 hours;
S2, the wet bamboo silk through step S1 thermophilic digestion is placed in to retort carries out carbonization, carburizing temperature is 130 ℃～150 ℃, carbonization time 4-6 hour, and pressure during carbonization is 3-4MPa;
S3, the bamboo silk after carbonization is dried for the first time, then, by the bamboo silk impregnation after drying for the first time, after impregnation, dry for the second time;
S4, the bamboo silk of drying is for the second time packed in mould and carries out high-pressure molding, the pressure of high-pressure molding is not less than 1.2 tons/square centimeter;
S5, by the section bar of high-pressure molding in the not demoulding to keep carrying out heat cure sizing under the condition of described pressure, heat cure shaping time is more than 10 hours, heat cure setting temperature is 80-150 ℃.
2. manufacture method according to claim 1, is characterized in that: in described step S5, heat cure sizing is divided into 3-4 stage according to time order and function, and the temperature in each stage improves successively, and each stage maintains 2-4 hour.
3. manufacture method according to claim 1, is characterized in that: the boiling temperature in described step S1 is 110 ℃.
4. manufacture method according to claim 1, it is characterized in that: in described step S3, the component of impregnation glue used comprises resin glue, the component of described resin glue comprises: formaldehyde, phenol, anhydrous sodium sulfate, urea, oleic acid, colophony powder and water, also comprise propane diols, and liquid caustic soda or sheet alkali.
5. manufacture method according to claim 4, is characterized in that: each component of described resin glue comprises according to quality meter:
Formaldehyde 70-110 part
Phenol 40-60 part
Anhydrous sodium sulfate 10-35 part
Urea 10-25 part
Oleic acid 3-8 part
Colophony powder 1-3 part
Water 35-60 part
Propane diols 1-5 part
Liquid caustic soda or sheet alkali 8-14.
6. according to the manufacture method described in claim 4 or 5, it is characterized in that: described liquid caustic soda is water content lower than any one or two or more mixtures in the ammonium hydroxide of 1 quality %, NaOH, potassium hydroxide, barium hydroxide; Described alkali is any one or the two or more mixtures in ammonium hydroxide, NaOH, potassium hydroxide, barium hydroxide.
7. manufacture method according to claim 6, is characterized in that: described resin glue is the resin glue of preparation by the following method:
S11, get 15～25 parts, 50～70 parts, formaldehyde, 40～60 parts of phenol, 1～5 part of propane diols, liquid caustic soda or 5～8 parts, sheet alkali, water and add after stirring in reactor that to regulate the pH value of mixture be 7～8 by adding suitable quantity of water, liquid caustic soda or sheet alkali, then be warming up to 65～85 ℃, then insulation reaction 70～100min, during insulation, temperature is also controlled within the scope of 65～85 ℃;
After S21, insulation 70～100min, by adding the pH value of suitable quantity of water, liquid caustic soda or sheet alkali adjusting product, be 7～8, then cool to 65～70 ℃;
S31, temperature drop to after 65～70 ℃, in product, add 20～40 parts, formaldehyde, and 10～35 parts of anhydrous sodium sulfates, are warming up to 80～85 ℃, insulation reaction 80～100min after stirring;
S41, reacted after, the pH value that regulates product by adding suitable quantity of water, liquid caustic soda or sheet alkali is to be cooled to 55～65 ℃ after 7～9, then in product, add 10～25 parts, urea, after stirring, temperature is risen to 55-70 ℃, add inside again 3～8 parts of oleic acid, 3～6 parts of liquid caustic soda, 20～35 parts, water, after stirring, be warming up to 85～99 ℃ and be incubated 60～100min;
S51, insulation cool to 45～50 ℃ after 60～100min, then more than adding and stirring 30min after the colophony powder of 1～3 part, cool to 45 ℃ and obtain below the integrated section bar resin glue of Cluster Bamboo after having stirred.
8. manufacture method according to claim 7, is characterized in that: described glue is that described resin glue and water are according to mass ratio 1:(0.7-0.9) mix.
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| CN201410023869.8A CN103737692B (en) | 2014-01-17 | 2014-01-17 | Sympodial bamboo integration profile manufacturing method |
| PCT/CN2015/070559 WO2015106667A1 (en) | 2014-01-17 | 2015-01-12 | Method for manufacturing clumping bamboo integrated extrudate |
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| WO2015106667A1 (en) * | 2014-01-17 | 2015-07-23 | 深圳市康尔竹木业有限公司 | Method for manufacturing clumping bamboo integrated extrudate |
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Denomination of invention: Sympodial bamboo integration profile manufacturing method Effective date of registration: 20161010 Granted publication date: 20141210 Pledgee: Ganzhou city Company limited by guarantee Pledgor: SHENZHEN KANGER BAMBOO WOOD Co.,Ltd. Registration number: 2016440020009 |
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Address after: 518000 3rd Floor, No. 2 Industrial Zone, Xili Dakan Village, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Kanger Holdings Co.,Ltd. Address before: 518000 3rd Floor, No. 2 Industrial Zone, Xili Dakan Village, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN KANGER BAMBOO WOOD Co.,Ltd. |
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