Carbon composite elliptical paddle and preparation method thereof:

A carbon composite elliptical paddle made of carbon composite material, the paddle including a circular right paddle (1) and a circular left paddle (2), in the right paddle (1) and The left paddle cymbal (2) has a smooth transition between the left elliptical paddle grip (6) and the right elliptical paddle grip (7), and left and right sides of the left elliptical paddle grip (6) are respectively left. The transition zone (8) is provided with a right transition zone (9) on the left and right sides of the right elliptical paddle grip (7), the left elliptical paddle grip (6) and the right elliptical paddle grip (7) The length is 170mm. The paddle is made of carbon composite material, and the elliptical grip is set in the middle. It is light in weight, strong in torsion strength, stable and powerful in grabbing. Which is suitable for game paddles. It adjusts the angle according to human body mechanics to make the product more ergonomically designed. The smooth transition between the round tube and the elliptical tube is achieved during the process.

carbon fiber paddle

Method for manufacturing secondary formed carbon fiber composite propeller.

A method for preparing a carbon fiber composite propeller for secondary molding. Which it first selects and processes a mold and a material, and forms a carbon fiber prepreg by coating, hot pressing, cooling, laminating and coiling the reinforcing material and the resin. The metal hub is manufactured by mechanical processing. The carbon fiber prepreg is coated on the metalized hub after the shot peening. And the composite formed hub is placed as an insert in the center of the propeller metal mold, and then used one by one. The reinforcing material is integrally laid on the propeller, and a total of twelve layers are laid. And the layers are laminated, glued, cured and post-treated. The invention makes the propeller by using the carbon fiber composite material. So that the propeller has high specific strength, large specific modulus, anti-fatigue, low vibration, low noise, lightweight, high efficiency, corrosion resistance, easy maintenance, and long service life; The second molding, and the second molding of the propeller. the process is simple and mature, and the self-produced carbon fiber composite propeller is realized.

Method for manufacturing secondary formed carbon fiber composite propeller

Technical field

The present invention relates to a method for fabricating a carbon fiber composite propeller. And more particularly to a method for fabricating a secondary formed carbon fiber composite propeller.

Background technique

Marine propellers have long been dominated by metal materials, with less consideration for the effects of materials on propeller performance. Metal materials have characteristics such as high hardness, small deformation, and high yield strength. Which they are reasons for long-term recognition. However, there are also many unfavorable factors, such as poor damping performance, large water noise, large weight. It is easy to cause vibration of the transmission shaft, prone to cavitation corrosion and induced fatigue cracks. Compared with traditional metal propellers, composite propellers. Especially carbon fiber composite propellers have high specific strength, large specific modulus, fatigue resistance, low vibration, low noise, lightweight, high efficiency, seawater corrosion resistance, easy maintenance, long service life, etc. Advantages, these have brought great potential to the future use of fiber reinforced composite propellers. Especially in the field of national defense and military applications. It is greatly improved the “stealth” performance of ships and was listed as a key development by many countries. Defense technology.

In foreign countries, composite propellers, especially carbon fiber composite propellers, have achieved initial success in application. In military applications, Italy’s black shark mine propeller, the US MK54 torpedo propeller, the German 206A submarine propeller, etc. are all made of carbon fiber reinforced composite materials. And they have reached a practical level; in civilian terms, the propeller made by Sweden Propulse AB has composed of one The metal hub and a number of replaceable composite blades are suitable for engines with a power of 20-300 hp. Once tested, the market has a good response. Composite propellers, especially carbon fiber composite propellers. They have been successfully assembled in superyachts or ships abroad, and the fuel consumption of propellers has been reduced by nearly 10%. But there is no mature composite propeller in China.