CN104786520A - Molding method of bamboo fiber composite material - Google Patents
Molding method of bamboo fiber composite material Download PDFInfo
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- CN104786520A CN104786520A CN201510145903.3A CN201510145903A CN104786520A CN 104786520 A CN104786520 A CN 104786520A CN 201510145903 A CN201510145903 A CN 201510145903A CN 104786520 A CN104786520 A CN 104786520A
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- Prior art keywords
- bamboo
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- mould
- product
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a molding method of a bamboo fiber composite material. The molding method comprises the following steps: slicing bamboo bark and using the sliced bamboo bark as a bamboo fiber raw material; covering the surface of the bamboo bark with an epoxy resin adhesive film to form a non-stick layer; making a mould-cutting cutter according to shapes of different planes of a product sample, using the mould-cutting cutter to cut the shape of each plane; determining the number of layers of laminated sample placing materials according to the thickness of the product sample, during stacking, removing the film on the surface of each layers of bamboo bark, sticking the materials together, laminating the materials crosswise according to the direction of fibers during material lamination; filling the laminated material into a sample mould cavity, closing a mould, performing hot press molding; demolding, taking out the molded sample from the mould; post-processing the sample: using a sanding method to remove burrs of the sample and resin adhesive curing burrs in the hot press molding process, performing surface grinding and surface painting treatment. According to the molding method, the obtained material can replace plastic parts of industrial products and meets the requirements for multidirectional complex curved surface of the industrial products.
Description
Technical field
The present invention relates to bamboo product manufacture field, particularly a kind of bamboo fiber composite material forming method.
Background technology
China is bamboo industry developed country, and the industrialization Integrated predict model technology of bamboo wood has been in level advanced in the world.But in the total amount of bamboo industry, traditional bamboo industry still dominate, industrial value and profit margin are in extremely low level.Bamboo flooring, bamboo decorative plate material and daily necessities etc. that the general bamboo adopting industrial integrated technology to process and heavy bamboo material are produced, be worth although significantly improved bamboo wood, range of application is also more single, and the comprehensive utilization ratio of bamboo wood is also lower.By the restriction of the traditional moulding technique of bamboo wood, greatly constrain continuable ecological bamboo wood and apply in industrial products field.The successful research of standardization bamboo fiber composite material moulding process, the vision of the material substitution of " moulding with bamboo generation " and " with bamboo substituting metal " will be realized, to industrial materials be realized based on bamboo wood in the extensive use of industrial products, all kinds of engineering fields etc., for reducing the harm of industrial solid rubbish and improving industrial ecology environment, promote that industrial ecology civilization has great importance.The successful research of standardization bamboo fiber composite material moulding technique, make bamboo fiber composite material substitute industrial products plastic, shape part becomes possibility, can be used as household electrical appliance, electronic product appearance member materials'use, also can be used as the more products fields such as automotive interior material to use, have a extensive future, and will huge economic worth be produced.
But about the processing of bamboo fiber composite material, there are the following problems in currently available technology: 1) break through difficulty of processing in the thermoplastic shaping process of traditional bamboo wood large, deformation rate is high, the technology bottlenecks such as moulding adaptability is little, with reference to carbon fiber forming process, pass through technology experiment, exemplar is manufactured experimently, the experimentations such as exemplar detection, Criterion bamboo fiber composite material lamination molded thermoplastic moulding technique, and set up industrialized manufacturing technique, reach bamboo wood substituted for plastic, the material substitution object of metal, realize the extensive alternative applications of bamboo fiber composite material in industrial products field, realize bamboo industry value promotion, enrich China's basic industries material supply chain, reduce the harm of plastics industry solid refuse, improve existing industrial ecology environment, promote the progress of industrial ecology civilization.
2) Sustainable Design theoretical system and continuous design method that bamboo fiber composite material applies in industrial products field is set up, the exemplary innovative product cases of design of creationary proposition bamboo fiber composite material application, carry out declaring (intending producing patent achievement more than 10) of design patent achievement, and carry out the Industry Promotion of achievement in research, realize the social economic value of scientific research.The product scope that bamboo fiber composite material intends application comprises: household electronic products, rehabilitation nursing product, electronic product, life family product and vehicles product (as automotive upholstery) etc., realize bamboo wood produces product scope field in more extensive industry, fully promote the using value of ecological bamboo wood.
3) by bamboo industry and bamboo product investigation, science and testing and verification is crossed, digital collection and analysis, bamboo fiber composite material standardization moulding process, bamboo product Sustainable Design theoretical system and the scientific research such as continuous design method and exemplary innovative design patented product achievement carry out gathering editor and be organized into " ecological bamboo wood and sustainable product design " monograph (intending title temporarily), the promotion propagation of scientific and technological achievement and the popularization of design concept.
Summary of the invention
For solving above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of bamboo fiber composite material forming method, solving existing bamboo fiber processing Problems existing.
For achieving the above object, technical scheme of the present invention is:
A kind of bamboo fiber composite material forming method: comprise the steps:
Step one, sliced bamboo skin are as bamboo fibre raw material;
Step 2, to be covered with epoxy resin glued membrane to bamboo epidermis face and to form antistick layer;
Step 3, shape according to product exemplar Different Plane, formulate mold cutter according to flat shape, adopts mold cutter to cut out the shape of each plane;
Step 4, according to product sample thickness, determine the number of plies that lofting material is stacked, in stacking process, remove the overlay film in every layer of bamboo epidermis face, make material paste together, in the process that material is stacked, cross layered by machine direction;
Step 5, stacked good material is loaded exemplar die cavity, close die, hot-forming;
Step 6, the demoulding, take out shaping exemplar from mould;
Step 7, exemplar post-processed: adopt abrasive finishing method to remove burr and the resin glue solidification burr of the hot-forming process of exemplar, carry out surface finish, surface lacquer process.
Further, in step one, the bamboo skin of described bamboo skin to be bamboo surface slicing thickness be 0.1-0.6mm.
Further, in step 2, the bamboo skin after overlay film saves backup in freezer.
Further, in step 3, cut in process at product, cut the angular range of direction and machine direction at 0 ° ~ 45 °.
Further, in step 4, during bamboo cortex is folded, keep the angular range of machine direction intersection at 15 ° ~ 45 °.
Further, in step 5, according to the binding agent characteristic of bisphenol epoxy and the exemplar scale of construction in the hot-forming process of bamboo fibre, need the key element considering this three aspect of temperature, pressure and time, according to tests such as cure profile DSC and dynamic rheological property curves, determine solidification temperature in conjunction with exothermic peak and viscosity etc. and suppress pressure, the hot-forming temperature of bamboo fibre is set within 85 ° ~ 120 ° scopes, pressure is 0.5Mpa, and molding time is at 5min ~ 15min.
Relative to prior art, beneficial effect of the present invention is:
Existing bamboo board hot-forming, be applicable to the products such as curved surface furniture, shaping curved surface be often unidirectional curved surface, and moulding process difficulty is greatly, and acceptance rate is low, is not suitable for applying in standardized industrial products; The present invention is based on material substitution to consider, towards industrial products, a kind of bamboo fibre industrial products housing component moulding process is provided, the object of alternative industrial products plastic can be realized, be applicable to the multidirectional complex-curved requirement of industrial products.This technique remains the natural textural characteristics of bamboo fibre, adopts sliced bamboo skin, thickness range 0.1 ~ 0.6mm, as the raw material of product exemplar, because its material is thinner, is easy to do complex-curved bending.Achieve again the forming requirements of the complex-curved standard component of industrial products, possessed the condition of alternative industrial products plastic, product is rich in natural affinity and environmental protection characteristic, possesses wide market application foreground.
Detailed description of the invention
Below in conjunction with detailed description of the invention, technical solution of the present invention is described in further detail:
A kind of bamboo fiber composite material forming method: comprise the steps:
Step one, sliced bamboo skin are as bamboo fibre raw material;
Step 2, to be covered with epoxy resin glued membrane to bamboo epidermis face and to form antistick layer;
Step 3, shape according to product exemplar Different Plane, formulate mold cutter according to flat shape, adopts mold cutter to cut out the shape of each plane;
Step 4, according to product sample thickness, determine the number of plies that lofting material is stacked, in stacking process, remove the overlay film in every layer of bamboo epidermis face, make material paste together, in the process that material is stacked, cross layered by machine direction;
Step 5, stacked good material is loaded exemplar die cavity, close die, hot-forming;
Step 6, the demoulding, take out shaping exemplar from mould;
Step 7, exemplar post-processed: adopt abrasive finishing method to remove burr and the resin glue solidification burr of the hot-forming process of exemplar, carry out surface finish, surface lacquer process.
Further, in step one, the bamboo skin of described bamboo skin to be bamboo surface slicing thickness be 0.1-0.6mm.
Further, in step 2, the bamboo skin after overlay film saves backup in freezer.
Further, in step 3, cut in process at product, cut the angular range of direction and machine direction at 0 ° ~ 45 °.
Further, in step 4, during bamboo cortex is folded, keep the angular range of machine direction intersection at 15 ° ~ 45 °.
Further, in step 5, according to the binding agent characteristic of bisphenol epoxy and the exemplar scale of construction in the hot-forming process of bamboo fibre, need the key element considering this three aspect of temperature, pressure and time, according to tests such as cure profile DSC and dynamic rheological property curves, determine solidification temperature in conjunction with exothermic peak and viscosity etc. and suppress pressure, the hot-forming temperature of bamboo fibre is set within 85 ° ~ 120 ° scopes, pressure is 0.5Mpa, and molding time is at 5min ~ 15min.
Operation principle of the present invention is:
Traditional bamboo product thermoplastic processes is normally the hot bending of former material based on circle bamboo or integrated bamboo clappers, can only carry out single-curved surface hot bending, and easily deformation occurs in cooling and shaping process, cannot reach the standardisation requirements of industrial products.This technology adopts sliced bamboo skin (a kind of bamboo fibre raw material, thickness range 0.1 ~ 0.6mm) as the raw material of product exemplar, because its material is thinner, is easy to do complex-curved bending.
Test example: the bamboo fiber composite material process the inventive method and common bamboo material carry out contrast experiment, test its bending resistance folding endurance and service life, result shows, bamboo fiber composite material bending resistance folding endurance through the inventive method processing is obviously better than common bamboo material, choosing the stronger bamboo skin of toughness in bamboo because of it is raw material, and according to the stacked each layer of bamboo fibre direction cross folding, bulk strength is obviously increased, and its service life is than more than the long twice of common bamboo material, and do not affect by wet environment, excellent performance, can use as a kind of novel industrial materials.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (6)
1. a bamboo fiber composite material forming method: it is characterized in that, comprise the steps:
Step one, sliced bamboo skin are as bamboo fibre raw material;
Step 2, to be covered with epoxy resin glued membrane to bamboo epidermis face and to form antistick layer;
Step 3, shape according to product exemplar Different Plane, formulate mold cutter according to flat shape, adopts mold cutter to cut out the shape of each plane;
Step 4, according to product sample thickness, determine the number of plies that lofting material is stacked, in stacking process, remove the overlay film in every layer of bamboo epidermis face, make material paste together, in the process that material is stacked, cross layered by machine direction;
Step 5, stacked good material is loaded exemplar die cavity, close die, hot-forming;
Step 6, the demoulding, take out shaping exemplar from mould;
Step 7, exemplar post-processed: adopt abrasive finishing method to remove burr and the resin glue solidification burr of the hot-forming process of exemplar, carry out surface finish, surface lacquer process.
2. method according to claim 1, is characterized in that, in step one, and the bamboo skin of described bamboo skin to be bamboo surface slicing thickness be 0.1-0.6mm.
3. method according to claim 1, is characterized in that, in step 2, the bamboo skin after overlay film saves backup in freezer.
4. method according to claim 1, is characterized in that, in step 3, cuts in process at product, cuts the angular range of direction and machine direction at 0 ° ~ 45 °.
5. method according to claim 1, is characterized in that, in step 4, during bamboo cortex is folded, keeps the angular range of machine direction intersection at 15 ° ~ 45 °.
6. method according to claim 1, it is characterized in that, in step 5, according to the binding agent characteristic of bisphenol epoxy and the exemplar scale of construction in the hot-forming process of bamboo fibre, need the key element considering this three aspect of temperature, pressure and time, according to the test of cure profile DSC and dynamic rheological property curve, in conjunction with exothermic peak and viscosity determination solidification temperature with suppress pressure, the hot-forming temperature of bamboo fibre is set within 85 ° ~ 120 ° scopes, pressure is 0.5Mpa, and molding time is at 5min ~ 15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145903.3A CN104786520A (en) | 2015-03-30 | 2015-03-30 | Molding method of bamboo fiber composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145903.3A CN104786520A (en) | 2015-03-30 | 2015-03-30 | Molding method of bamboo fiber composite material |
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| Publication Number | Publication Date |
|---|---|
| CN104786520A true CN104786520A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510145903.3A Pending CN104786520A (en) | 2015-03-30 | 2015-03-30 | Molding method of bamboo fiber composite material |
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| CN (1) | CN104786520A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621448A (en) * | 2018-04-24 | 2018-10-09 | 厦门宇诠复材科技有限公司 | A kind of composite material and its preparation process |
| CN111873119A (en) * | 2020-07-21 | 2020-11-03 | 北京永华晴天科技发展有限公司 | Tray and processing method thereof |
-
2015
- 2015-03-30 CN CN201510145903.3A patent/CN104786520A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621448A (en) * | 2018-04-24 | 2018-10-09 | 厦门宇诠复材科技有限公司 | A kind of composite material and its preparation process |
| CN111873119A (en) * | 2020-07-21 | 2020-11-03 | 北京永华晴天科技发展有限公司 | Tray and processing method thereof |
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Application publication date: 20150722 |