Analysis and Study of Carbon Fiber Composite Curing Quality-With Suspension MTB Frame.

• Main Authors: Chris,Chen, 陳建亨
• Other Authors: Mark,Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/62098193793671590110

碩士 === 國立中正大學 === 企業管理研究所 === 100 === Because CFRP (Carbon Fiber Reinforced Plastics) composite possesses the advantages, such as high stiffness, high strength and lightweight, etc., CFRP has already been generally applied to aviation industry, automobile industry and sports Equipment industry. CFRP composite is used when produce the MTB bicycle frame, it is different from the general metal material, because CFRP can reach any form that you can imagine while applying to the mould. Because the superior characteristic of the carbon fiber material , making the engineer very apt to design a frame can reach the best mechanics structure , and the advantage the frame that make possesses high stiffness , lightweight , anti fatigue and riding comfortably etc. Because the appearance quality of curing is not good, cause raw frame to finish Bondo (Putty) process first, can just spray paint to raw frame. Bondo (Putty) process has the highest cost and the least quantity of manufacturing capacity in all processes via counting. This will increase the production cost, and reducing produces competitiveness of delivery. In view of this, this thesis will regard experiment as the main research way, and assist through composite theory. Probe into and study curing quality about carbon fiber MTB bicycle frame. Suppose at first that the resin flow out rate is unstable, the molds temperature difference is too big, cure molds design is not perfect, these three reasons are the main reasons that cause curing appearance not good. Make use of the modification of curing equipment, Control mould open time and offering opportunity of controlling the high-pressure air with the temperature of the mould. Must also match cure condition of the suitable epoxy resin system, could come to stabilize resin flow out rate. The resin flow out difference rate is from 7% original while changing into 0.8% through improving. And then through curing mould redesign, improving the difference of temperature of the mould too big and resin poor phenomenon of appearance. Curing mould redesign makes the difference of temperature of the same mould reduce from original 18.8 degrees Centigrade to 5.9 degrees Centigrade, difference of temperature of the mould has been reduced by 12.9 degrees centigrade altogether. Also there is obvious improvement in the poor resin of appearance; Reduce from original 25point to 5 point, it is up to 80 % to improve the effect. For remaining 20% of the poor resin of appearance, and is still using old curing molds, this thesis has also offered the appropriate and fast settlement countermeasure.