WO2007109928A1

WO2007109928A1 - A method of forming profile shell product with carbon fiber

Info

Publication number: WO2007109928A1
Application number: PCT/CN2006/000911
Authority: WO
Inventors: Jinghui Wang
Original assignee: Jinghui Wang
Priority date: 2006-03-24
Filing date: 2006-05-08
Publication date: 2007-10-04
Also published as: CN101041265A; CN100540273C

Abstract

A method of forming profile shell product with carbon fiber includes the following steps: providing a solid foam body with carbon fiber as a core for a mold, which has thermal contractility and shape smaller than the shape of finished product, fitting an air nozzle on the body, spraying a glue material on the surface of the core to form a layer of film, which has resistance to high temperature and is non-sticking to the carbon fiber, covering some carbon fiber on the surface of the film, then putting the assembly into a mold to obtain the finished product. This method is easy to operate and is cheaper for cost. The product obtained from the method has a strength 20-40% higher than the normal product having the same weight.

Description

Method for forming shaped shell product using carbon fiber

Technical field

The present invention relates to a method for producing a carbon fiber product, and more particularly to a method for fabricating a shaped shell product using carbon fiber.

Background technique

The carbon fiber material has the characteristics of light weight, high strength and good elasticity. Its ability to deform and rebound, energy absorption and release efficiency are better than natural wood fiber, tensile strength is more than several times the wire. Because carbon fiber has high tensile strength, large Young's modulus and excellent heat resistance, it is widely used in aerospace, aviation, chemical, electronic and sports equipment, leisure sports and other fields, from hook fish, tennis rackets, Badminton rackets, bicycles and other sports, entertainment products, various industrial machines, X-ray related medical equipment, civil engineering, aerospace and other fields have a wide range of applications. The biggest advantage of carbon fiber is its light weight and hard strength, so it can be used to make the fuselage of the aircraft and the body of the car. For example, the body of the Formula 1 car made with it is stronger than the body made of aluminum alloy and steel. a lot of. The prior art method for producing a carbon fiber product is usually a nylon long bag inflating as an inner mold, and the carbon fiber is coated on the outer surface of the gas-filled nylon long bag at the same time; It is required to cover a certain thickness, and the carbon fiber is usually strip-shaped, so that the strength can be increased by the criss-crossing of the carbon fiber strip during the coating process, and then the nylon long bag coated with the carbon fiber layer is placed. The outer mold characterized by the shape of the product is then subjected to heat forming, and finally, the nylon long bag is taken out to form a carbon fiber product having a certain shell shape. However, since the inflated nylon bag is easily deformed after being stressed, the shape and wall thickness of the product are often unsatisfactory after molding, and since the nylon long bag has no elasticity, the inner shape of the carbon fiber product is affected, and the wall thickness is often uneven. Therefore, the nylon long bag can be easily formed into a simple tubular or arc-shaped casing product, and it is difficult to manufacture a polygonal tubular product and a profiled inner hollow casing product. For example, a relatively complicated process is usually used for the production of such a product, and the production cost is relatively high. High, and the product is not ideal, which affects the application of carbon fiber products. Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and to provide a method for fabricating a profiled shell product by using carbon fiber, which has the advantages of simple manufacture, low cost, convenient forming of the shaped shell product, and weight reduction. The density is high, the same weight can be increased by 20%~40%, and the characteristics of one-piece molding can meet the requirements of products of various shapes. The technical solution adopted by the present invention to solve the technical problem thereof is: a manufacturing method for forming a shaped shell product by using carbon fiber, and a foaming material having heat shrinking characteristics is selected to be a solid body having substantially the same shape as the product. The inner membrane is provided with at least one tuyère, and a gel-like material having a high temperature resistance characteristic and not bonded to the carbon fiber is sprayed on the outer surface of the inner film to form a film which is uniform on the outer surface of the film. The carbon fiber layer is coated, placed in a mold, and heated to form a carbon fiber shaped product.

A manufacturing method for forming a shaped shell product by using carbon fiber comprises the following steps: a. using a foaming material having heat shrinking characteristics to form a solid body having substantially the same shape as the product, the overall size of which is slightly smaller than the product;

A2. fixing at least one tuyeres to the solid body;

A3. taking the solid body as an inner mold, spraying a gel-like material having a high temperature resistance characteristic and not bonding with the carbon fiber on the outer surface of the inner mold, and forming a rubber film layer coated on the solid body; The film is coated on the inner mouth of the tuyères;

A4. uniformly coating the carbon fiber sheet on the outer surface of the film to form a carbon fiber layer having a certain thickness;

A5. The inner mold which has been uniformly coated with the carbon fiber layer is placed in a mold and the mold is heated, and the solid body made of the foamed material characterized by heat shrinkage is heated and then reduced;

A6. Connect the gas source to the outer mouth of the tuyere, and blow air inward through the tuyere to make the air flow between the film and the solid body, and inflate the film along the shape of the solid body, and expand the glue. The film abuts the carbon fiber layer against the inner wall of the mold to heat form the carbon fiber layer;

A7. Open the mold, take out the whole formed body, and then take out the compacted or broken solid body and film from the whole body. The shell is the finished carbon fiber.

The aforementioned foaming material having heat shrinkage characteristics is a boryeong material or a sponge material.

The aforementioned gel-like material having high temperature resistance characteristics and not bonded to carbon fibers is silica gel.

The foregoing method for facilitating the formation of a shaped product by carbon fiber further comprises the step a61 between the step a6 and the step a7. The nozzle is connected to the inlet of the nozzle and the water is infused through the nozzle. , allowing water to flow between the film layer and the solid body.

A manufacturing method for forming a shaped shell product by using carbon fiber, comprising the following steps: bl. forming a solid body slightly smaller than a product shape by using a foaming material having heat shrinking characteristics; b2. at least one wind nozzle and the above Solid body fixed connection; B3. taking the solid body as an inner mold, spraying a gel-like material having a high temperature resistance characteristic and not bonding with the carbon fiber on the outer surface of the inner mold, and forming a rubber film layer coated on the solid body; The film is coated on the inner mouth of the tuyères;

B4. The carbon fiber sheet is uniformly wrapped on the outer surface of the film to form a carbon fiber layer having a certain thickness;

B5. placing an inner mold uniformly coated with a carbon fiber layer into the mold;

B6. The hot gas source is connected to the outer mouth of the tuyere, and the hot air is blown inward through the tuyere. The solid body made of the foaming material characterized by heat shrinkage is heated and then shrunk, so that the hot air flows in the film and the solid. The film is inflated between the bodies and along the shape of the solid body, and the expanded film abuts the carbon fiber layer against the inner wall of the mold and shapes the carbon fiber layer by heat transfer;

B7. Open the mold, take out the whole formed body, and then take out the compacted or broken solid body and film from the whole body, and the shell is finished with carbon fiber.

The foregoing method for facilitating the formation of a shaped product by carbon fiber further includes a step b between step b 6 and step b 7. using a tuyere as a water nozzle, connecting the water source to the inlet of the water nozzle, through the water nozzle Water is poured inwardly to allow water to flow between the film layer and the solid body.

The manufacturing method for forming a profiled shell product by using carbon fiber of the invention adopts a foamed material having heat shrinkage characteristics to make a solid body slightly smaller than the product as an inner mold, and fully utilizes foaming having heat shrinkage characteristics. The material is low in production cost and shrinks after being heated, and is first made into a solid body for forming a support when the carbon fiber sheet is coated, and can be reduced after being heated to allow air to act on the film. The foamed material having heat shrinkage characteristics may be a blister, a sponge, or other foaming material that can achieve heat shrinkage.

The invention relates to a method for fabricating a shaped shell product by using carbon fiber, which uses a gel-like material having a high temperature resistant characteristic and not bonded to carbon fibers, such as silica gel, on the outer surface of the inner mold. The glue contains silicone oil and thus does not adhere to the carbon fibers. Of course, it can also be other films that satisfy the above conditions. This method makes full use of the film's easy expansion, high temperature resistance and non-adhesion with carbon fiber, and the carbon fiber layer is formed by pressing the carbon fiber layer against the inner wall of the mold, and at the same time The film can be taken out of the casing formed by the carbon fiber layer. Because this film is easy to swell, blowing air or hot air After that, the film expands outward, and can fill various corners or sharp corners in the mold to form various irregular shapes. The method for manufacturing the profiled shell product for facilitating the use of carbon fiber is characterized in that the wind force is usually from small to large when the air is blown, and the wind pressure is 2 Kg to 10 Kg. Of course, different products can select different wind pressures. For example, when the product is large, the selected wind pressure will be larger. When blowing hot air for forming, and when the volume of the formed product is large, hot air can be blown as follows: first, when hot air is poured to fullness for about 1 minute, the gas is turned off; then hot air is poured into about 3 Minutes, shut off the gas; and so on, a total of 5 to 6 times of hot air, the time is about 25 minutes, this kind of hot air is shorter than the previous time is longer to facilitate the formation of the product.

The invention has the beneficial effects that the foamed material having the heat shrinking feature is made into a solid body which is slightly smaller than the product as the inner mold, and the wind nozzle is formed on the solid body, and the solid body is used as the inner mold. The outer surface is sprayed with a gel-like material which is resistant to temperature and does not adhere to the carbon fiber, forms a film, uniformly coats the carbon fiber cloth on the outside of the film, and is formed into a mold. The method for manufacturing a carbon fiber shaped shaped shell product has the advantages of simple manufacture, low cost, convenient shape forming, and weight and density reduction, and the same weight can be increased by 20% to 40%, and is convenient. The one-piece molding features meet the requirements of products in a variety of shapes.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, a method of making a molded outer casing product using carbon fibers of the present invention is not limited to the embodiment.

Figure 1 is a schematic view showing the construction of a profiled product product by the present invention;

Figure 2 is a schematic view showing the construction of a profiled product made by the present invention.

detailed description

Embodiment 1 Referring to FIG. 1 and FIG. 2, a manufacturing method for forming a shaped shell product by using carbon fiber of the present invention comprises the following steps: Step al. Made of Baolilong material and basic shape of the product The same solid body 1, the overall size is slightly smaller than the product;

Step a2. Forming the two tuyeres 11 together with the Baolilong material on the solid body 1; Step a3. Applying the solid body 1 as an inner mold, spraying the high temperature resistant silica gel on the outer surface of the inner mold, and forming a package a silicone film layer 2 covering the solid body; the silicone film 2 is wrapped around the inner mouth of the tuyères 11;

Step a4. uniformly coating the carbon fiber sheet on the outer surface of the silica gel film 2 to form a certain thickness Carbon fiber layer 3;

Step a5. The inner mold uniformly coated with the carbon fiber layer 3 is placed in a mold and the mold is heated, and the solid body 1 made of the Baolilong material is reduced by heat;

Step a6. Connect the gas source to the outer mouth of the tuyères 11, and blow air inward through the tuyere 11, so that the air flows between the silica gel membrane 2 and the solid body 1, and the silicone membrane is formed along the shape of the solid body 1. 2, the inflated, expanded silicone film 2 abuts the carbon fiber layer 3 against the inner wall of the mold to heat-form the carbon fiber layer 3; Step a7. Open the mold, take out the integral formed body, cut off the excess portion, and then form the whole The solid body and the film which have been shrunk or broken are taken out from the body, and the casing 31 is the finished carbon fiber of FIG.

The manufacturing method for forming a profiled shell product by using carbon fiber of the invention adopts the solid body 1 which is slightly smaller than the product of the Baolilong material as the inner mold, and fully utilizes the low cost and heat of the material of the Baolilong material. After being reduced, the solid body 1 is first formed to form a support when the carbon fiber sheet is coated, and can be reduced after being heated to allow the air pressure to act on the silicone film 2.

The manufacturing method for forming a shaped shell product using carbon fiber of the present invention employs a layer of high temperature resistant silica gel coated on the outer surface of the inner mold, which gel contains silicone oil and thus does not adhere to the carbon fiber. In this way, the silicone fiber membrane is fully utilized for the expansion property, the temperature resistance and the adhesion to the carbon fiber, and the carbon fiber layer 3 is formed by pressing the carbon fiber layer 3 against the inner wall of the mold to form the carbon fiber layer 3. At the same time, the silicone film 2 can be taken out from the casing 31 formed of the carbon fiber layer 3. Because the silicone film 2 is easily swelled, the silicone film 2 expands outward after being blown into the air, and can fill various corners or sharp corners in the mold to form a profiled shape.

When blowing in air, the wind is usually from small to large, and the wind pressure is 2Kg~10 Kg. Of course, different products can choose different wind pressures. For example, when the product volume is large, the selected wind pressure will be larger.

Embodiment 2 A method for fabricating a shaped shell product using carbon fiber according to the present invention comprises the following steps:

Step al. The sponge body is made into a solid body having substantially the same shape as the product, and the overall size is slightly smaller than the product;

Step a2. Forming the tuyères together with the sponge material on the solid body;

Step a3. taking the solid body as an inner mold, spraying high temperature resistant silica gel on the outer surface of the inner mold, and forming a silicone film layer coated on the solid body; the silicone film is coated on the inner mouth of the tuyere;

Step a4. uniformly coating the carbon fiber sheet on the outer surface of the silica gel film to form a carbon fiber layer having a certain thickness; Step a5. placing the inner mold which has been uniformly coated with the carbon fiber layer into the mold and heating the mold, and the solid body made of the sponge material is heated and then reduced;

Step a6. Connect the gas source to the outer mouth of the tuyère, blow air inward through the tuyere, and let the air flow between the silicone membrane and the solid body, and inflate the silicone membrane along the shape of the solid body, and expand. The carbon fiber layer is formed by pressing the carbon fiber layer against the inner wall of the mold to heat the carbon fiber layer;

Step a7. Open the mold, take out the whole formed body, and then take out the solid body and the film which are shredded or broken from the whole body, and the shell is the finished carbon fiber.

Embodiment 3 Referring to FIG. 1 and FIG. 2, a manufacturing method for forming a shaped shell product using carbon fiber of the present invention is different from Embodiment 1 in that between step a6 and step a7. It also includes a step a61. The tuyere 11 is a water nozzle, the water source is connected to the inlet of the water nozzle 11, and the water nozzle 11 is filled with water to make the water flow between the rubber film layer and the solid body. This method can quickly cool down and improve production efficiency.

Embodiment 4 Referring to FIG. 1 and FIG. 2, a manufacturing method for forming a shaped shell product using carbon fiber of the present invention comprises the following steps - step bl. 制成 Made of Baolilong material is slightly smaller than the product Shaped solid body 1;

Step b2. and install the two tuyeres 11 on the solid body 1 of the Baolilong material;

Step b3. The solid body 1 is an inner mold, and the outer surface of the inner mold is sprayed with a high temperature resistant silica gel, and a rubber film layer 2 coated on the solid body is formed; the silicone film 2 is covered in the tuyere mouth;

Step b4. The carbon fiber sheet is evenly wrapped on the outer surface of the silica gel membrane 2 to form a carbon fiber layer 3 having a certain thickness;

Step b5. placing an inner mold uniformly coated with the carbon fiber layer 3 into the mold;

Step b6. The hot gas source is connected to the outer mouth of the tuyere 11, and the hot air is blown inward through the tuyere 11. The solid body 1 made of the Baolilong material is heated and then reduced, so that the hot air flows in the silicone membrane 2 and the solid Between the bodies 1, and inflating the silicone film 2 along the shape of the solid body 1, the expanded silica film 2 abuts the carbon fiber layer 3 against the inner wall of the mold and shapes the carbon fiber layer 3 by heat transfer;

Step b7. Open the mold, take out the whole formed body, remove the tuyere 11, and take out the solid body and the film which have been shrunk or broken from the whole body, and the shell 31 is finished as carbon fiber.

If the formed product is bulky, hot air can be blown as follows: first, when hot air is poured to fullness for about 1 minute, the gas is turned off; then hot air is poured for about 3 minutes to turn off the gas; and so on, Total hot air The gas is 5~6 times, and the time is about 25 minutes. This kind of hot air is short in the front time and the longer time is beneficial to the formation of the product.

When the shape of the formed product is complicated, toluene can be added before taking out the solid body and the film of the Baoli Dragon. The toluene is beneficial to the melting of the Baolilong, and is more advantageous for extracting the residual Baolong film. Industrial applicability

The invention relates to a method for manufacturing a shaped shell product by using carbon fiber, and adopts a heat-shrinkable solid inner film, which can conveniently produce various carbon fiber shaped shaped shell products, and has good industrial applicability.

Claims

Rights request

A method for fabricating a profiled shell product using carbon fiber, comprising: the following steps:

Al. using a foamed material having heat shrinkage characteristics to form a solid body having substantially the same shape as the product, the overall size of which is slightly smaller than the product;

A2. detachably attach at least one tuyeres to the solid body;

A3. The solid body is used as an inner mold, and a gel-like material having a temperature-resistant characteristic and not bonded to the carbon fiber is sprayed on the outer surface of the inner mold, and a rubber film layer covering the solid body is formed. The film is wrapped around the inner mouth of the tuyères;

A7. Open the mold, take out the whole molded body, remove the tuyères, and take out the solid or rubber film that has been shrunk or broken from the inside of the whole molded body to obtain a carbon fiber casing.

2. A method of fabricating a profiled shell product using carbon fiber according to claim 1, wherein: said foamed material having heat shrinkage characteristics is a Baolilong material.

3. A method of fabricating a profiled shell product using carbon fiber according to claim 1, wherein: said foamed material having heat shrinkage characteristics is a sponge material.

4. A method for fabricating a profiled shell product using carbon fiber according to claim 1 or 2 or 3, wherein the carbon fiber is resistant to enthalpy and does not interact with carbon fibers. The bonded gelatinous material is silica gel.

The method for fabricating a shaped shell product using carbon fiber according to claim 1 or 2 or 3, wherein the method for manufacturing a shaped shell product using carbon fiber is provided, Between step a6 and step a7, step a61 is further included. The wind nozzle is used as a water nozzle, and the water source is connected to the inlet of the water nozzle, and water is poured inward through the water nozzle to make water flow between the rubber film layer and the solid body.

6. A method for fabricating a profiled shell product using carbon fiber, characterized by: comprising the steps of:

Bl. using a foamed material having heat shrinking characteristics to form a solid body having substantially the same shape as the product, the overall size of which is slightly smaller than the product; and molding at least one tuyeres with a foaming material having heat shrinking characteristics in a solid Physically

B2 fixedly connecting at least one tuyeres to the solid body;

B3. taking the solid body as an inner mold, spraying a gel-like material having a temperature-resistant characteristic and not bonded to the carbon fiber on the outer surface of the inner mold, and forming a rubber film layer coated on the solid body The film is wrapped around the inner mouth of the tuyères;

B4. uniformly coating the carbon fiber sheet on the outer surface of the film to form a carbon fiber layer having a certain thickness;

B7. Open the mold, take out the whole formed body, and then take out the solid body and film which have been reduced or broken from the whole body, and the shell is finished with carbon fiber.

7. A method of fabricating a profiled shell product using carbon fiber according to claim 6, wherein: said foamed material having heat shrinkage characteristics is a Baolilong material.

8. A method of fabricating a profiled shell product using carbon fiber according to claim 6, wherein: said foamed material having heat shrinkage characteristics is a sponge material.

9. The method according to claim 6, wherein the gel-like material having a high temperature resistant characteristic and not bonded to the carbon fiber is Silica gel.

10 . The method according to claim 6 , wherein when the volume of the manufactured product is large, the hot air can be blown as follows: hot air is firstly used. When the filling is full for about 1 minute, turn off the air; then pour the hot air for about 3 minutes to turn off the gas; and so on, the hot air is irrigated 5~6 times for about 25 minutes.

The method for fabricating a shaped shell product using carbon fiber according to claim 6 or 10, characterized in that: the manufacturing method comprises the step b between step b 6 and step b 7 61. Use the tuyere as the faucet, connect the water source to the inlet of the faucet, and fill the water through the faucet to make the water flow between the film layer and the solid body.