CN204819815U - Reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material - Google Patents
Reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material Download PDFInfo
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- CN204819815U CN204819815U CN201520392559.3U CN201520392559U CN204819815U CN 204819815 U CN204819815 U CN 204819815U CN 201520392559 U CN201520392559 U CN 201520392559U CN 204819815 U CN204819815 U CN 204819815U
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- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 208
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 title abstract description 24
- 230000008521 reorganization Effects 0.000 title abstract 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
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- 229920002521 macromolecule Polymers 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 20
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- 229920005610 lignin Polymers 0.000 abstract description 17
- 238000000465 moulding Methods 0.000 abstract description 2
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- 229920003002 synthetic resin Polymers 0.000 abstract 3
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- 238000012216 screening Methods 0.000 description 4
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- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 230000010148 water-pollination Effects 0.000 description 1
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- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The utility model discloses a reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material. The utility model discloses a technical essential is, this reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material, and it is moulded by the reorganization of at least two -layer expansion bamboo timber and gathers veneer layering stack, with the fibre lignin in the polymer resin compound grafting bamboo timber, through the high temperature high pressure, makes the polymer resin compound mould integrate body of combinate form one -tenth with the bamboo timber under the heat fusing state, expanding the bamboo timber reorganization and moulding when gathering veneer layering stack, the tabasheer layer is relative with the tabasheer layer, and the surf green layer is relative with the surf green layer. The utility model provides the high bamboo timber percentage of out turn, work efficiency improves, has reduced the cost of unit product, the mechanical properties who has kept the bamboo timber fully, adopt polymer resin to fill the reorganization and mould and gather the bamboo timber, make the bamboo timber modified, the material becomes the environment -friendly suitable for building structure material.
Description
Technical field
The utility model belongs to building material technical field, is specifically related to the restructuring of a kind of formaldehydeless bamboo wood and moulds poly-structural lumber.
Background technology
Bamboo wood has goodish mechanical property, and with regard to intensity and cost, bamboo is considered to the highest material of occurring in nature usefulness.The tensile strength of bamboo wood is about 2 times of timber, and compression strength is 1.5 times of timber, and the specific strength of bamboo wood is higher than timber and common iron, and therefore, bamboo wood possesses the good basis condition as structural lumber.If be developed as building structural materials, just can widen the purposes of bamboo wood at building field, for a kind of effective way is opened up in the utilization promoting bamboo resource.Up to the present, bamboo wood also rests in the application of indoor house ornamentation, knickknack, exterior decoration and building template substantially, is not yet used as structural lumber.Tension, the compressive mechanical property of bamboo wood are not fully played, and the excellent mechanical property of bamboo wood self is applicable to structural panel and the single load bearing structural member material such as additive beam slab, post, body of wall in development architecture structure very much.
Although a kind of typical, the organism with good mechanical property that bamboo is that nature exists.Its intensity is high, good springiness, stable performance, and density is little.Structures shape mechanical property, bamboo organism structure to bear self quality and growing environment load, very long evolutionary process makes structure have excellent mechanical property.But bamboo is the hollow Cylinder of minor diameter, from shape to performance, all can not meet the construction requirement of modern construction engineering structure.For it can be used as structural lumber to use, shape, modification must be changed to former bamboo, producing the sheet material and section bar that are suitable for modern construction engineering constructional techniques.At present, recombining bamboo, lamination bamboo wood are under press capacity meets the demands situation, thicker slab can be obtained, and then be cut into the square bar such as beam, post of different size, this artificial bamboo board compacting needs very high pressure could obtain enough intensity, therefore product density is comparatively large, raw materials consumption is more, and production cost is high.And, they in the fabrication process, the milling of the fiber biological amount of bamboo wood plane is more, and inner tissue's structure of bamboo wood has suffered destruction, and its intensity is not in full use.Meanwhile, have employed the resin glue with formaldehyde composition, with the addition of harmful chemicals composition to environmental type bamboo wood, the manufacture creating material is polluted, and is not suitable for use in house architectural structure material, is harmful to the healthy of people.
The structure of bamboo is the more typical lightweight structure that occurring in nature exists, and gives people and designs the useful inspiration of bamboo matter building structure light sectional material.Meanwhile, because current China increases day by day to the demand of timber structure section bar, and timber resources lacks relatively, and timber supply and demand contradiction is increasingly under intense situation, and " wood substituted by bamboo " accelerates development environmental type bamboo matter structural lumber, will have important practical significance.
Summary of the invention
The purpose of this utility model is to provide a kind of and bamboo wood is launched restructuring moulds poly-veneer as surface layer, sandwich layer and bottom, and has recombinating without aldehyde type bamboo wood of higher intensity and mould poly-structural lumber.
Above-mentioned purpose of the present utility model realizes by the following technical solutions: this moulds poly-structural lumber without the restructuring of aldehyde type bamboo wood, it is recombinated by least two-layer expansion bamboo wood and moulds poly-veneer layering superposition, with the cellulignin in macromolecule resin grafting compounds bamboo wood, by HTHP, make macromolecule resin compound under hot melt state, mould combinate form with bamboo wood and become an integrate body; When poly-veneer layering superposition is moulded in the restructuring of expansion bamboo wood, tabasheer layer is relative with tabasheer layer, and bamboo green layer is relative with bamboo green layer.
Concrete, it is remove bamboo internal segment by arc bamboo sheet that poly-veneer is moulded in described expansion bamboo wood restructuring, tabasheer layer longitudinally cut open split, bamboo green layer is connected, flatten, determine thick just the plane cured layer of bamboo strip and yellow bamboo face, and carry out bamboo wood preplasticizing modification and macromolecule resin compound and to mat formation the bamboo chip after process, yellow bamboo face is the same face, bamboo strip is the veneer that the same face, side are close to close proper alignment mutually.
Further, described bamboo wood preplasticizing modification is that coupling agent, crosslinking agent and lignin fibre binder solution are sprayed at the bamboo fiber lignin of dried bamboo chip on the surface, makes its fully moistening and sex change; Described macromolecule resin compound mat formation be bamboo chip after bamboo wood preplasticizing modification yellow bamboo face on to mat formation macromolecule resin compound, by the mode of vibration, resin compound is entered in crackle gap.
Concrete, this structural lumber thickness is 14-50mm, and length is 2600-4800mm, and width is 200-1200mm.
Know-why of the present utility model is mainly:
Bamboo wood preplasticizing modification process, to bamboo wood spraying coupling agent, crosslinking agent and lignin fibre binder solution, coupling agent, crosslinking agent and lignin fibre binder solution and bamboo fiber lignin carry out biochemical reaction, reach chemical reaction under certain environmental conditions to complete, bamboo wood dried or dries, after drying, obtaining preplasticizing modification bamboo wood.Coupling agent can improve and is connected the brute force of base material, main amine functional group can with a series of thermosetting resin and thermoplastic generation grafting effect.
The natural macromolecular material that bamboo wood is made up of cellulose, hemicellulose, lignin and extract etc., it is a kind of uneven anisotropic material, and therefore interfacial characteristics is very complicated.Form in the key components such as the cellulose of bamboo wood, hemicellulose, lignin containing the functional group such as a large amount of polar hydroxyl groups and phenolic hydroxyl group simultaneously, its surface exhibits goes out very high chemical polarity, thus surperficial mainly through carrying out the modifications such as esterification, etherificate, graft copolymerization to polar functional group at bamboo fiber, it is made to generate hydrophobic nonpolar chemical functional group and have mobility, make bamboo fiber surface similar to the solubility of macromolecule resin frosting, reduce the repellence between plastics and bamboo material surface, thus improve the interfacial adhesion of bamboo wood and plastics.The effect of bamboo fiber surface preplasticizing modification mainly coupling agent, improves bamboo fiber surface and the compatibility of plastic interface, improves the cohesive at two interfaces.
Cellulignin is one of main component of bamboo culm wall, bonding and reinforcing between fiber and fiber can be made in the mode of physics or chemistry in cell membrane, and form the skeleton of bamboo wood, with the ability of the mechanical strength and antimicrobial erosion that increase bamboo wood, make bamboo pole uprightly tall and straight not perishable.
Cellulignin is thermoplastic macromolecular compound, containing feature functionality groups such as methoxyl group, carbonyl, carbonyls on its large molecule of state of aggregation.It has the gamma transition character of unbodied high polymer, and below vitrification point, lignin is that glass is solid-state, if but more than vitrification point, molecular link moves, and lignin is softening to become sticky, and has viscous force.Bamboo fiber lignin glass transition temperature point is 162 DEG C.
It is exactly eliminate the hydrogen bond repulsive interaction between bamboo fiber lignin molecule that bamboo wood carries out preplasticizing process, weaken bamboo fibre lignin-base because of in methoxyl group (-OCH
3), the polarity of hydroxyl (-OH), carbonyl (-C=O), improve the interface between cell membrane and lumen, make the original doping region of bamboo wood be transformed into nonpolar district, can effectively with resin congruent melting, do not need adhesive in production process.
Technique effect of the present utility model is mainly:
The former bamboo of the utility model area in blocks is large, and it is few that thick bamboo tube cuts open sheet number, and be launched into the force plane of planar shaped bamboo chip by arc bamboo sheet, bamboo cutting amount significantly reduces, and reduces manufacturing procedure, does not need bamboo chip adjustable cast iron planes to process; Improve bamboo wood volume recovery, original technique bamboo wood volume recovery only has about 50%, and the utility model retains the effective quantity of goods produced of bamboo wood to greatest extent, and bamboo wood volume recovery improves 80%; Because area in blocks is large, operation is few, and personnel reduce, and equipment operating efficiency is high, reduces the cost of unit product; Because arc bamboo sheet is launched into the milling of planar shaped bamboo chip, it is more than former technique that bamboo green layer retains quantity of goods produced, maintains the mechanical property of bamboo wood fully; The utility model adopts macromolecule resin to fill restructuring and moulds poly-bamboo wood, and make bamboo wood modification, material becomes the applicable building structure material of environment-friendly type.
It is that a kind of three-dimensional moulds poly-composite structure that the utility model moulds poly-building structure equipment structure without the restructuring of aldehyde type bamboo wood.This material structure is main load-carrying member with natural mao bamboon, adds macromolecule resin filling materials, additive etc., moulds poly-a kind of novel three-dimensional composite with special process process.In material structure, bamboo wood is main load-carrying member, and macromolecule resin plays filling, attractive in appearance, decoration, the effect such as mothproof, shaping, and additive plays the functions such as bonding, strengthening node.This structure has three-dimensional humidification, good combination, and branch and reinforcing function can reach wood substituted by bamboo, with bamboo for steel, substitutes the object of other material, is with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is the structural representation that poly-veneer is moulded in the restructuring of the utility model bamboo wood.
Fig. 2 is the structural representation that poly-structural lumber is moulded in the restructuring of the utility model bamboo wood.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
See Fig. 1, it is the structural representation that poly-veneer is moulded in the restructuring of the utility model bamboo wood.As can be seen from Fig. 1, it is remove bamboo internal segment by arc bamboo sheet that poly-veneer is moulded in the restructuring of this expansion bamboo wood, tabasheer layer longitudinally cut open split, bamboo green layer is connected, flatten, just the plane cured layer of bamboo strip and yellow bamboo face, to be processed into fixed width fixed thick and carry out bamboo wood preplasticizing modification and macromolecule resin compound and to mat formation the bamboo chip 1 after process, then by the yellow bamboo face of bamboo chip 1 be the same face, bamboo strip is the veneer that the same face, side are close to close proper alignment mutually; In Fig. 1,2 is rings of bamboo chip 1, and 3 represent the macromolecule resin compound penetrated in bamboo chip 1.
The technical process that poly-veneer is moulded in bamboo wood of the present utility model restructuring is as follows: former bamboo sawing become length to be after the thick bamboo tube of 2600-5000mm, by thick bamboo tube Vertical sawing machine or collide and cut open into two pieces of arc bamboo sheets, removing bamboo internal segment; Cut open tabasheer through bamboo wood roller again to discongest milling machine and bamboo wood yellow bamboo face is cutd open the longitudinal crack be cleaved between 4-5mm, tabasheer surface layer cuts open and splits the degree of depth apart from bamboo strip 3-4mm, form tabasheer surface layer and longitudinally evenly analyse some tiny bamboo fiber bundle bars, and bamboo green layer not obtain analysing be a complete body, tiny tabasheer bamboo fiber bundle bar, be retained on bamboo green layer, form former bamboo wood tabasheer layer to cut open to split and discongest bamboo wood, be a monoblock during the interconnected expansion of outer wall bamboo green layer, tabasheer layer depend on bamboo green layer formed one launch after bamboo wood cell cube.Then by the planing of fixed for bamboo wood cell cube thick milling Huang, carry out the soft plastics processing of high temperature, drying, bamboo wood preplasticizing modification, drier, macromolecule resin compound of mating formation become the bamboo chip 1 shown in Fig. 1, then the veneer be polymerized to shown in Fig. 1 moulded in bamboo chip 1 screening compacting restructuring.
See Fig. 2, it is the structural representation that poly-structural lumber is moulded in the restructuring of the utility model bamboo wood.As seen from Figure 2, it is recombinated by the expansion bamboo wood shown in four layers of Fig. 1 to mould poly-veneer layering superposition that poly-structural lumber is moulded in bamboo wood restructuring, with the cellulignin in macromolecule resin grafting compounds bamboo wood, by HTHP, make macromolecule resin compound under hot melt state, mould combinate form with bamboo wood and become an integrate body; When poly-veneer layering superposition is moulded in the restructuring of expansion bamboo wood, tabasheer layer is relative with tabasheer layer, and bamboo green layer is relative with bamboo green layer.
Below the technical process that poly-structural lumber is moulded in bamboo wood restructuring is described in detail.
(1) after former bamboo sawing becomes the thick bamboo tube of scale lengths, thick bamboo tube is split into two pieces of arc bamboo sheets, removing bamboo internal segment; The length of arc bamboo sheet is 2600-5000mm;
(2) bamboo chip yellow bamboo face is discongested into the longitudinal crack fibre bundle bar of 4-5mm spacing, yellow bamboo face cuts open and splits depth distance bamboo strip 3-4mm, forming tabasheer ribbon is retained on bamboo green layer, forms former bamboo tabasheer layer and cuts open the bamboo chip splitting and discongest, the planing of Ding Hou milling Neihuang County, the just cured layer of plane bamboo strip;
(3) carry out that high temperature is soft moulds process to discongesting bamboo chip;
(4) bamboo chip dehydrates, and moisture content is 8%.
(5) bamboo chip preplasticizing modification: i.e. bamboo material surface cellulignin modification carries out surface modification treatment to hydrophily bamboo fiber lignin, to improve its binding ability with macromolecule resin compound;
(6) dry preplasticizing modification bamboo chip: temperature controls at 55-60 DEG C, and moisture content is 8%;
(7) macromolecule resin compound to be mated formation filling bamboo chip, screening assembly, reheating compression moulding is polymerized to type, cutting edge, finally according to purposes hot pressing restructuring laminated timber; Obtain without the restructuring of aldehyde type bamboo wood, to mould poly-structural lumber thickness be 14-50mm, length is 2600-4800mm, and width is 200-1200mm, and specific bamboo wood is not limited, can determine according to demand.
The soft treatment process condition of moulding of high temperature in above-mentioned steps is: bamboo wood is in the withstand voltage still of sealing, and temperature 130 DEG C-135 DEG C, processes 3-40 minute.
Bamboo material surface cellulignin modification in above-mentioned steps is: by dried bamboo chip, bamboo fiber lignin is sprayed on the surface with coupling agent, crosslinking agent and lignin fibre binder solution, make its fully moistening and sex change, to its modifying surface process; In coupling agent, crosslinking agent and lignin fibre binder solution, adopt the blend solution of novel silane coupler (an isocyanates propyl-triethoxysilicane) 2% (mass percentage concentration), crosslinking agent (dimethyl ethylene glycol) 2.5% (mass percentage concentration) and lignin fibre adhesive 0.5% (mass percentage concentration).
Macromolecule resin compound in above-mentioned steps is mated formation and is: macromolecule resin compound of mating formation on the yellow bamboo face of preplasticizing bamboo chip, makes resin object enter in crackle gap by the mode of vibration; Mix in resin and account for the blowing agent (Celogen Az) that resin quality percentage composition is 2.5%; Described macromolecule resin compound is polyvinylchloride, resin moulded by polythene PE, polystyrene PS, ABS copolymer resins and wood, bamboo is moulded in resin any one.
Screening assembly in above-mentioned steps is, macromolecule resin compound to be mated formation the bamboo chip cell cube handled well, by symmetry principle, yellow bamboo face is the same face, bamboo strip is the same face, wide head and narrow head match, and side is close to close fitly arrangement mutually and forms Bamboo veneer; Again relative with tabasheer layer to Bamboo veneer layering superposition, tabasheer layer, bamboo green layer are formed lamination blanket relatively with bamboo green layer.
It is that the lamination blanket formed after screening assembly is carried out following PROCESS FOR TREATMENT that hot compression molding in above-mentioned steps gathers restructuring:
(a) thermoplastic pre-pressing stage: the time is 3-4 minute, normal pressure is 1.6Mpa, and lateral pressure is 1.5Mpa, and temperature is 140 DEG C;
(b) secondary compaction stage: when bamboo wood and resin compound soften, when reaching glass transition condition, again increase pressure, blanket normal pressure is 3.6Mpa, and lateral pressure is 3.1Mpa, and temperature is 170 DEG C, and the time was by every millimeter of calculating in 0.45 minute;
(c) last decrease temperature and pressure sizing stage: the time is 3 minutes, and normal pressure is 1.8Mpa, and lateral pressure is 1.6Mpa, and temperature drops to 95 DEG C.
Claims (3)
1. mould poly-structural lumber without the restructuring of aldehyde type bamboo wood for one kind, it is characterized in that: it is recombinated by least two-layer expansion bamboo wood and moulds poly-veneer layering superposition, with the cellulignin in macromolecule resin grafting compounds bamboo wood, by HTHP, make macromolecule resin compound under hot melt state, mould combinate form with bamboo wood and become an integrate body; When poly-veneer layering superposition is moulded in the restructuring of expansion bamboo wood, tabasheer layer is relative with tabasheer layer, and bamboo green layer is relative with bamboo green layer.
2. mould poly-structural lumber without the restructuring of aldehyde type bamboo wood according to claim 1, it is characterized in that: it is remove bamboo internal segment by arc bamboo sheet that poly-veneer is moulded in described expansion bamboo wood restructuring, tabasheer layer longitudinally cut open split, bamboo green layer is connected, flatten, determine thick just the plane cured layer of bamboo strip and yellow bamboo face, and carry out bamboo wood preplasticizing modification and macromolecule resin compound and to mat formation the bamboo chip after process, yellow bamboo face is the same face, bamboo strip is the veneer that the same face, side are close to close proper alignment mutually.
3. mould poly-structural lumber without the restructuring of aldehyde type bamboo wood according to claim 1, it is characterized in that: this structural lumber thickness is 14-50mm, length is 2600-4800mm, and width is 200-1200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392559.3U CN204819815U (en) | 2015-06-09 | 2015-06-09 | Reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392559.3U CN204819815U (en) | 2015-06-09 | 2015-06-09 | Reorganization of no aldehyde type bamboo timber is moulded and is gathered building structure material |
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| CN204819815U true CN204819815U (en) | 2015-12-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875247A (en) * | 2015-06-09 | 2015-09-02 | 湖南风河竹木科技股份有限公司 | Formaldehyde-free bamboo recombined, plasticized and polymerized building structure material and production technique |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875247A (en) * | 2015-06-09 | 2015-09-02 | 湖南风河竹木科技股份有限公司 | Formaldehyde-free bamboo recombined, plasticized and polymerized building structure material and production technique |
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