CN114953504A

CN114953504A - Bionic composite flute and preparation method thereof

Info

Publication number: CN114953504A
Application number: CN202210540365.8A
Authority: CN
Inventors: 许亚丰; 周一鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-08-30

Abstract

The invention provides a bionic composite flute and a preparation method thereof. The bionic composite flute is designed by utilizing the designability of the structure and the performance of the composite material to simulate the structure (bamboo fiber structure, bamboo flesh structure, cell wall structure, micro-pore structure and the like) and the performance (density, hardness, modulus and the like) of the optimal bamboo material for manufacturing the flute. The bionic composite flute prepared by the method is expected to make up for the series defects of the traditional bamboo flute, and firstly, the timbre is close to or even better than that of the flute made of the optimal bamboo material, so that the bamboo flute can be accepted by players. Secondly, the tone is sensitive, and the pitch can reach 4 times of high pitch. Third, no tuning is required to be designed. The composite material is not influenced by the change of air temperature, so that the composite material can be designed into a single section and is convenient to play in cooperation with a band. Fourthly, the paint is durable, and can avoid the defects of cracking, mildewing, oxidation, intolerance to high and low temperature and the like. Fifthly, the material has moderate hardness, and can be punched, manually tuned and the like by adopting the traditional bamboo flute manufacturing method.

Description

Bionic composite flute and preparation method thereof

Technical Field

The invention belongs to a flute manufacturing method, and particularly relates to a bionic composite flute and a manufacturing method thereof.

Background

The traditional Chinese flute is mainly made of bamboos, but has the defects that firstly, bamboo materials suitable for making high-grade bamboo flutes are very scarce; secondly, the bamboo is made of natural materials, the specification is not uniform, and standardization cannot be achieved; thirdly, the bamboo flute is affected by the air temperature, and the pitch needs to be adjusted in a two-section mode, so that the bamboo flute is inconvenient to cooperate with a band; fourthly, the bamboo flute is easy to crack, mildew, oxidize, and not resistant to high and low temperature, etc. Although some researchers developed wooden flutes, plastic flutes, glass fiber reinforced plastic winding flutes, etc., none of them could completely solve the above problems.

Disclosure of Invention

In order to overcome the defects of the existing bamboo flute, the invention provides a bionic composite flute and a preparation method thereof.

The technical scheme adopted by the invention is to simulate the structure (bamboo fiber structure, bamboo pulp structure, cell wall structure, micro-pore structure and the like) and the performance (density, hardness, modulus and the like) of the optimal bamboo material for manufacturing the flute by utilizing the designability of the structure and the performance of the composite material. The prepreg is prepared by adopting fabric prepreg, unidirectional prepreg and low-density adhesive film through the processes of mold design and manufacture, prepreg cutting, prepreg laying, curing, demolding, machining, punching, tuning, decoration and the like.

Preferably, the reinforcement of the fabric prepreg is one or more of carbon fiber cloth, glass fiber cloth, aramid fiber cloth, bamboo fiber cloth, hemp fiber cloth and a plurality of fiber mixed fabrics. The weave is one or more of plain weave, twill weave, satin weave, lightning weave and hexagonal football weave. The matrix is one or a combination of more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The resin content is (30-70)%. The preparation method of the prepreg is a wet-process prepreg technology or a dry-process prepreg technology.

Preferably, the reinforcement of the unidirectional prepreg is one or more combinations of carbon fibers, glass fibers, aramid fibers, bamboo fibers, hemp fibers and hybrid fibers. The matrix is one or a combination of more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The resin content is (25-50)%. The preparation method of the prepreg is a wet-process prepreg technology or a dry-process prepreg technology.

Preferably, the low-density adhesive film is a resin film added with a low-density filler. The preparation method of the adhesive film is a wet coating process or a dry coating process. The resin is one or more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The filler is one or a combination of aerogel, glass beads and phenolic aldehyde beads, and the density is (0.001-0.5)%. The resin content is (10-80)%.

Preferably, the mould is designed and manufactured, and the flute corresponding to each tone is divided into 3 sizes (thinner, medium and thicker), so that a player can conveniently select the flute according to the characteristics of musical compositions and personal playing habits.

Preferably, the layering process is prepared before the layering. Uniformly coating (3-5) layers of mold release agent on the surface of the mold. And secondly, spreading 1 layer of fabric prepreg or unidirectional prepreg with higher resin content. Thirdly, laying layers according to the sequence of the low-density adhesive film, the unidirectional prepreg, … … low-density adhesive film and the unidirectional prepreg until the thickness requirement is met. And fourthly, paving a layer of fabric prepreg with high resin content on the outer surface. Spreading a demolding cloth.

Preferably, the curing process is normal pressure curing, and the maximum forming temperature is (60-200) DEG C.

Preferably, the punching step is to machine the blank holes by mechanical punching according to the approximate positions of the holes (blowing holes, film holes, finger holes, sound output holes, etc.).

Preferably, the tuning process is to finely tune the blank hole, and the tuning process can be performed by using a tuning knife in the same manner as the traditional bamboo flute.

Preferably, the decoration process is to engrave tone marks, name of producer (materials engineer and disc tuner), brand (carbonfluete), kind of patent and number of patent on the surface of the finished product.

Compared with the prior art, the invention has the following beneficial effects:

1. the flute made of the composite material has the tone color similar to or better than that of a flute made of the optimal bamboo material, and can be accepted by players.

2. The flute timbre of the composite material is sensitive, and the pitch can reach 4 treble.

3. The composite flute of the invention does not need to be designed into copper connection and tuning by sections. The composite material is not influenced by the change of air temperature, so that the composite material can be designed into a single section, and is convenient to play in cooperation with a band.

4. The flute made of the composite material is durable, and can avoid cracking, mildew, oxidation, high and low temperature intolerance and the like.

5. The composite flute material has moderate hardness, and can be punched, manually tuned and the like by adopting a traditional bamboo flute manufacturing method.

6. The flute with each tone of the composite flute is divided into 3 sizes (thinner, medium and thicker), so that a player can conveniently select the flute according to the characteristics of musical compositions and personal playing habits.

Drawings

Fig. 1 is a real object diagram of a carbon fiber composite material b-falling flute obtained in example 1 of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

In the flute made of the carbon fiber composite material, the preparation raw materials include carbon fiber/epoxy fabric prepreg, carbon fiber/epoxy unidirectional prepreg and a low-density epoxy adhesive film.

Wherein the carbon fiber cloth of the carbon fiber/epoxy fabric prepreg is T300-1K twill cloth, and the resin content is 60%. The carbon fiber of the carbon fiber/epoxy unidirectional prepreg is T700-12K, and the resin content is 33%. The design density of the epoxy glue film is 0.65.

The preparation method of the flute made of the carbon fiber composite material comprises the following specific steps:

1. preparing before layering. Uniformly coating (3-5) layers of mold release agent on the surface of the mold.

2. 1 layer of fabric prepreg or unidirectional prepreg with high resin content is paved. And secondly, sequentially laying the low-density adhesive film, the unidirectional prepreg, … …, the low-density adhesive film and the unidirectional prepreg until the thickness requirement is met. And thirdly, a layer of high-resin-content fabric prepreg is laid on the outer surface. And fourthly, paving and covering the demolding cloth.

2. Molding in an oven at 150 + -5 deg.C for 8 hr, naturally cooling, and demolding at a temperature below 60 deg.C;

3. post-processing, aligning two ends, drawing lines and punching holes;

4. tuning;

5. and (5) decorating to obtain the carbon fiber composite flute.

Claims

1. A bionic composite flute and a preparation method thereof are characterized in that:

the bionic composite flute is prepared from fabric prepreg, unidirectional prepreg and a low-density adhesive film through the processes of mold design and manufacturing, prepreg cutting, prepreg laying, curing, demolding, machining, punching, tuning, decoration and the like.

2. The biomimetic composite flute according to claim 1, wherein:

the reinforcement of the fabric prepreg is one or a combination of carbon fiber cloth, glass fiber cloth, aramid fiber cloth, bamboo fiber cloth, fibrilia cloth and a plurality of fiber mixed fabrics. The weave is one or more of plain weave, twill weave, satin weave, lightning weave and hexagonal football weave. The matrix is one or a combination of more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The resin content is (30-70)%. The preparation method of the prepreg is a wet-process prepreg technology or a dry-process prepreg technology.

3. The biomimetic composite flute according to claim 1, wherein:

the reinforcement of the unidirectional prepreg is one or a combination of carbon fiber, glass fiber, aramid fiber, bamboo fiber, hemp fiber and hybrid fiber. The matrix is one or a combination of more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The resin content is (25-50)%. The preparation method of the prepreg is a wet-process prepreg technology or a dry-process prepreg technology.

4. The biomimetic composite flute according to claim 1, wherein:

the low-density adhesive film is a resin film added with low-density filler. The preparation method of the adhesive film is a wet coating process or a dry coating process. The resin is one or more of epoxy resin, phenolic resin, unsaturated polyester resin, polypropylene and polyethylene terephthalate. The filler is one or a combination of aerogel, glass beads and phenolic aldehyde beads, and the density is (0.001-0.5)%. The resin content is (10-80)%.

5. A method for preparing a bionic composite flute according to any one of claims 1 to 4, wherein the method comprises the following steps:

the mould design and preparation correspond the flute of every tonality and divide into 3 sizes (thinner, medium, thicker), make things convenient for the player to select according to musical composition characteristics and individual playing custom.

6. A method for preparing a bionic composite flute according to any one of claims 1 to 4, wherein the method comprises the following steps:

the layering process is to prepare before layering. Uniformly coating (3-5) layers of mold release agent on the surface of the mold. And secondly, spreading 1 layer of fabric prepreg or unidirectional prepreg with higher resin content. Thirdly, laying the layers according to the sequence of the low-density adhesive film, the unidirectional prepreg, the … … low-density adhesive film and the unidirectional prepreg until the thickness requirement is met. And fourthly, paving a layer of fabric prepreg with high resin content on the outer surface. And covering a release cloth.

7. A method for preparing a flute of biomimetic composite material according to any of claims 1-4, characterized in that:

the curing process is normal pressure curing, and the maximum forming temperature is (60-200) DEG C.

8. A method for preparing a bionic composite flute according to any one of claims 1 to 4, wherein the method comprises the following steps:

in the punching process, blank holes are machined according to the approximate positions of all holes (blowing holes, film holes, finger holes, sound outlet holes and the like) by adopting a mechanical punching mode.

9. A method for preparing a bionic composite flute according to any one of claims 1 to 4, wherein the method comprises the following steps:

and in the tuning process, fine tuning is performed on the basis of the punched blank holes, and tuning can be performed by adopting a tuning knife in the same manner as the traditional bamboo flute.

10. A method for preparing a bionic composite flute according to any one of claims 1 to 4, wherein the method comprises the following steps:

the decoration process is to carve tone marks, names of producers (materials maker and tuning machine), brands (carbon fiber), patent types and patent numbers on the surface of the finished product.