CN202491286U - Bamboo fiber composite section - Google Patents
Bamboo fiber composite section Download PDFInfo
- Publication number
- CN202491286U CN202491286U CN2012200749079U CN201220074907U CN202491286U CN 202491286 U CN202491286 U CN 202491286U CN 2012200749079 U CN2012200749079 U CN 2012200749079U CN 201220074907 U CN201220074907 U CN 201220074907U CN 202491286 U CN202491286 U CN 202491286U
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- bamboo
- fiber composite
- composite material
- adhesive
- bamboo fiber
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Abstract
The utility model discloses a bamboo fiber composite section. As improvements, the bamboo fiber composite section comprises a charred bamboo filament material consisting of longitudinal continuous and transverse loose fiber bundles, wherein an adhesive is attached to the surfaces of the fiber bundles of the charred bamboo filament material; and the fiber bundles are bonded tightly into a section. The section has stable product size and high physical property, is mold-proof and corrosion-proof, can be widely applied in the field of vehicles such as materials for steamship decks and internal cabin decorating structures, and can be applied to the industry of building materials such as outdoor pavilions, outdoor furniture, outdoor floors and the like.
Description
Technical field
The utility model relates to a kind of bamboo fiber composite material.
Background technology
The new section bar that composite material is made up of two or more different materials; Overcome homogenous material and processed the shortcoming of section bar; Advantage with composition material; Even can produce the special performance that the stock blend material is not had because of cooperative effect, all there is a large amount of research and development in each country, and deeply is used in military industry field.Along with development of science and technology, increasing composite material is walked out military industry, gets in the middle of the life of ordinary people.The string reinforced composite is a kind of novel composite material, has abroad obtained suitable approval at present, and be widely used in fields such as aircraft, automobile, building materials, has obtained certain economic benefits and social benefit.
China is world bamboo industry big country, has long cultivation and utilizes historical and deep cultural deposits.Bamboo has the good mechanical performance, is described as " plant iron and steel ".Analyze the two-phase pattern natural-fiber composite material that bamboo wood is made up of bamboo fibre vascular bundle and parenchyma cell from microtexture; From chemical composition analysis, form by cellulose, hemicellulose and lignin, also be to belong to the composite category, and be natural-fiber composite material.
Hemicellulose contains a large amount of hydroxyl isoreactivity groups, and the polymerizable molecular chain is shorter, and has a large amount of side chains, is that the physics, the chemical stability that constitute in the three big elements of bamboo wood are the poorest, the chemical composition that the bamboo wood physical and mechanical property is had the greatest impact.On the other hand, a large amount of monose, compound sugar and a spot of tannin, amino acid, mineral nutrition material are contained in bamboo wood inside, for the growth of rot fungi provides prescribing adequate nutrition.And, the rotten fungies of various bamboos all can degrade effectively cellulose and hemicellulose in the bamboo wood cell membrane.These factors have proposed acid test to the outdoor use of bamboo wood.How utilizing bamboo wood, take the method for economical rationality, make advanced biomass combined section bar, is the new section bar of exploitation bamboo matter, important topic of promotion bamboo industry upgrading.
Summary of the invention
The utility model is a technical solution existing issue in use, and a kind of insect protected, anticorrosion, novel bamboo fiber composite material that comprehensive mechanical property is good are provided.
The technical scheme that the utility model solves existing issue is: a kind of bamboo fiber composite material; As improvement; The charing bamboo silk material that comprise vertically continuously, horizontal loose fiber bundle constitutes; The fibre bundle surface attachment of described charing bamboo silk material has adhesive, and described fibre bundle closely bonds the formation section bar each other.
As further improvement, described surface attachment has the mutual bonding section bar that is pressed into of the charing bamboo silk material fibre bundle of adhesive.
As further improvement, above-mentioned section bar is sheet shape, arc, circle or waveform; Above-mentioned adhesive is the resin adhesive, specifically can be phenolic resins, resorcinol-formaldehyde resin or isocyanates resinoid, can be alcohol-soluble resin also, like epoxy resin.
The utility model compared with prior art, its beneficial effect is that the section bar product size is stable, mechanical strength is high, fungus-proof antisepsis can be widely used in field of vehicles, like ship's deck, cabin interior trim structure material; Can also be applied to the building materials industry, like aspects such as outdoor booth platform building pavilion, open-air furniture, outdoor floorings.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Referring to Fig. 1, the charing bamboo silk material 1 that this case study on implementation comprises vertically continuously, horizontal loose fiber bundle 2 constitutes, fibre bundle 2 surface attachment of charing bamboo silk material 1 have adhesive 3, fibre bundle 2 mutual bonding forming materials.Section bar is sheet shape, arc, circle or waveform, and adhesive 3 is preferably resin adhesive 3.
Surface attachment has the mutual bonding section bar that is pressed into of charing bamboo silk material 1 fibre bundle of adhesive 3.
The utility model product is removed the nutriment of rot fungis such as the inner sugar of bamboo wood, tannin; Destroy bamboo wood parenchyma cell institutional framework; And keep high-intensity bamboo vascular bundle is fibre bundle 2, and all or part of pyrolysis hemicellulose components is introduced resin adhesive as wild phase.Product all has high-quality performance at aspects such as mechanical property, outdoor weathe resistance ability, dimensional stability, be the preferred product of architectural decoration material, especially as the quality product of outdoor structure material.
Below in conjunction with the preparation technology of the utility model, further explain the utility model.
The former bamboo of mao bamboon is blocked, remove branch, the thick bamboo tube that cuts off to length; Adopt annular saw to hack or the mode of the punching that collides in the thick bamboo tube that obtains, be processed into bamboo chip; Go green grass or young crops to remove Huang to the broken thin bamboo strip of bamboo chip, keep the bamboo meat part of bamboo chip, the THICKNESS CONTROL of thin bamboo strip is in 1～5mm scope; Be preferably 3mm, discongest through rolling, make the parenchyma cell wall debacle of thin bamboo strip, improve the bamboo wood specific area, obtaining continuous, the horizontal loose bamboo thread sheet material of longitudinal fiber is fibre bundle 2; These bamboo thread sheet materials are put into the high temperature furnace destructive distillation; Remove nutriments such as the inner sugar of bamboo wood, tannin; And the hemicellulose in all or part of decomposition bamboo wood, process the darker charing bamboo silk material 1 of color, the high temperature furnace endogenous pyrogen adopts conduction oil, high-temperature furnace gas or electrical heated pipings; High temperature furnace is that airtight in the middle of the bamboo wood three big elements, the heat endurance of hemicellulose is the poorest, is just beginning a large amount of pyrolysis more than 180 ℃ with isolated extraneous air during destructive distillation, and is accompanied by maximum cellulosic the softening of bamboo wood mechanical property contribution; When temperature surpasses 280 ℃; Cellulose begins violent decomposition, but too the high-cellulose decomposition is too fast for temperature, can cause the mechanical property of product unstable; In order to guarantee the mechanical strength of product; Take the mode of segmentation heating in this case study on implementation, that is: the bamboo thread sheet material that will break behind the thin bamboo strip is heated to 130 ℃ in 0.5-2 hour time in airtight high temperature furnace, be incubated 1～4 hour; Purpose causes bamboo wood internal moisture strenuous exercise through heating, softening oven dry bamboo wood; Feed steam or nitrogen then, make pressure in the high temperature furnace in 0.1～0.8Mpa scope as protective gas; And simultaneously the temperature in the high temperature furnace is risen to 250 ℃; Kept 0.5～4 hour; Hemicellulose at least a portion in the bamboo thread sheet material is decomposed, and 250 ℃ of these temperature can either make the cellulose quick decomposition can make that again the process of its decomposition is very steady; And it is very short under this temperature, to decompose the needed time; Generally just need to realize about half an hour, stop heating, treat to feed when temperature is reduced to below 100 ℃ in the stove saturated vapor and regulate charing bamboo silk material moisture content between 5～10%.
Further, the charing bamboo silk material after using spray gun to destructive distillation sprays glue, or puts into the glue pond and flooded 5～30 minutes; Spray glue air pressure is not less than 2.5bar; The glue solid content is not less than 45%, the 15-25% that resin added is grasped in charing bamboo silk material bar weight, and glue can be water-soluble resin; Like phenolic resins, resorcinol-formaldehyde resin, or the isocyanates resinoid; Also can be alcohol-soluble resin, like epoxy resin etc.
Charing bamboo thread sheet material after the taking-up applying glue drains unnecessary glue, displays in air, to dry or put into Drying tunnel and dries to charing bamboo thread sheet material moisture content 8～15%; Notice that temperature is not above 80 ℃ in the Drying tunnel.
The dried charing bamboo thread sheet material of impregnation parallel longitudinal is arranged in the mould, and bamboo silk addition must satisfy product density 1.0～1.2g/cm
3, mold shape can be the mould of plane pressing plate, also can be the mould of special-shaped pressing plates such as arc, waveform, is divided into two kinds of technologies according to the difference of curing mode:
A, hot-press solidifying
The heating thermal source uses steam, heat conduction wet goods; In the time of hot-press solidifying; Die pressure is controlled at 6～9MPa, 120～150 ℃ of temperature, hot pressing time 30～60 minutes; Feed the cold water cooling when treating slowly to be cooled to 90 ℃ after glue solidifies fully, the section bar product of moulding is taken out in release when temperature is lower than 50 ℃;
B, the heat cure of colding pressing
The parallel mould of putting into of charing bamboo thread sheet material that impregnation is dry is sent into the cold press extrusion forming then, and the pressurization parameter is pressure 50～70MPa; The pressure of 50-70Mpa like this is the system pressure of the hydraulic press that solidifies of colding pressing, and this pressure acts on the hydraulic press oil cylinder that is used for the pressing mold tool; Amassing of the cross-sectional area of oil cylinder and this pressure; Act on the power on the mould exactly, hot-press solidifying also is same reason, 2～5 minutes time.Removal pressure takes out after fixing mould, puts into the high temp tunnel heating then and makes glue curing, and temperature is treated to see the tunnel demoulding off after glue solidifies fully at 110～140 ℃ in the tunnel.
It is following that this embodiment obtains composite material product physical and mechanical property parameter:
Moisture content: 6～12%
Thickness expansion rate of water absorption :≤2% (thorough impregnation recorded the result after 24 hours in 23 ℃ of water)
MOR (MOR): >=100MPa
The modulus of elasticity in static bending (MOE): >=12GPa
Anticorrosion grade: meet or exceed UC3A grade (the anticorrosion grade of U.S. AWPA)
The profile size that adopts method of the present invention to process is stable, and mechanical strength is high, and fungus-proof antisepsis can be widely used in field of vehicles, like ship's deck, cabin interior trim structure material; Can also be applied to the building materials industry, like aspects such as outdoor booth platform building pavilion, open-air furniture, outdoor floorings.
Claims (6)
1. bamboo fiber composite material is characterized in that: comprise vertically continuously, the horizontal charing bamboo silk material that constitutes of loose fiber bundle that the fibre bundle surface attachment of described charing bamboo silk material has adhesive, described fibre bundle closely bonds each other.
2. bamboo fiber composite material as claimed in claim 1 is characterized in that: described surface attachment has the mutual bonding section bar that is pressed into of the charing bamboo silk material fibre bundle of adhesive.
3. bamboo fiber composite material as claimed in claim 1 is characterized in that: described section bar is sheet shape, arc, circle or waveform.
4. bamboo fiber composite material as claimed in claim 1 is characterized in that: described adhesive is the resin adhesive.
5. bamboo fiber composite material as claimed in claim 4 is characterized in that: described resin adhesive is phenolic resins, resorcinol-formaldehyde resin or isocyanates resinoid, also can be alcohol-soluble resin.
6. bamboo fiber composite material as claimed in claim 5 is characterized in that: described alcohol-soluble resin is an epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200749079U CN202491286U (en) | 2012-03-02 | 2012-03-02 | Bamboo fiber composite section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200749079U CN202491286U (en) | 2012-03-02 | 2012-03-02 | Bamboo fiber composite section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202491286U true CN202491286U (en) | 2012-10-17 |
Family
ID=46997525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200749079U Expired - Fee Related CN202491286U (en) | 2012-03-02 | 2012-03-02 | Bamboo fiber composite section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202491286U (en) |
-
2012
- 2012-03-02 CN CN2012200749079U patent/CN202491286U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20140302 |