Manufacturing technology of the hottest high-perfo

2022-08-12
  • Detail

"Manufacturing technology of high-performance bamboo based fiber composites" improves the utilization rate of bamboo resources

recently, it was learned from the Wood Industry Research Institute of the Chinese Academy of forestry that the research on "manufacturing technology of high-performance bamboo based fiber composites" completed by Yu Wenji, a researcher of the Institute, has broken the problem that bamboo green and bamboo yellow are difficult to effectively bond in the traditional processing technology of bamboo, The one-time utilization rate of large-diameter bamboo such as moso bamboo can be increased from 20% ~ 50% to more than 90%, and China's advantageous bamboo resources such as small-diameter bamboo and tufted bamboo can be effectively utilized

it is reported that China's bamboo industry has developed rapidly in recent years, maintaining a compound growth rate of about 30% every year. However, "due to the cylindrical structure of the thin-walled inner space of bamboo, the specimen (or product) is clamped by a fixture to apply force to the specimen, and there are bamboo yellow and bamboo green on the inner and outer surfaces that are difficult to bond. The content of bamboo green and bamboo yellow accounts for about 15% - 20% of the total amount of bamboo. The traditional processing method of simply removing bamboo green and bamboo yellow will cause a large number of bamboo to have a significant impact on the surface roughness of the workpiece and be wasted, and the utilization rate of bamboo is only 45% - 48%." Yu Wenji said

after years of research and practice, Yu Wenji's team took bamboo resources growing in southern China as raw materials, and integrated many technologies, such as bamboo fiber controllable separation technology, bamboo veneer flattening technology, bamboo based fiber composite manufacturing unit optimization technology, bamboo green bamboo yellow gluing technology, bamboo reinforcement unit introduction technology, etc, A new processing technology of bamboo raw materials - the manufacturing technology of high-strength bamboo based fiber composites has been developed

this technology realizes the high performance and adjustability of bamboo based fiber composites, without removing bamboo green and bamboo yellow, and finally produces high-performance and multi-purpose bamboo based fiber composites. The material can be used in the fields of high weatherability materials such as wind turbine blades, container floors and outdoor floors, as well as high consumption materials such as furniture and cement formwork

it is reported that since 2009, the technology has started a promotion and demonstration mode with enterprises as the main application body. Many pilot and production tests have been carried out in Anhui Jintai bamboo industry, Zhejiang Juntai technology, Meishan rolling stock factory of the Ministry of railways, Chengdu Dajiang decorative materials company, etc., and one production demonstration line for bamboo based fiber composites for wind turbine blades with an annual output of 8000 cubic meters, 200 sets of bamboo laminated materials for wind turbine blades with an annual output of 80000 cubic meters, and one production demonstration line for bamboo based fiber composites for all bamboo container bottom plates with an annual output of 80000 cubic meters has been built, Formed a mature set of production technology and equipment. Among them, the wind turbine blades manufactured with this technology in Dezhou, Shandong Province, are 40.3 meters long and weigh 5.9 tons, which can meet the strength requirements of 1.5 MW wind turbine blades. Compared with traditional FRP composites, the weight is reduced by more than 30% and the cost is reduced by more than 10%

"in China, small-diameter bamboo and tufted bamboo account for nearly 50% of China's bamboo resources, but their advantages are far from being brought into play. Among the 11 major bamboo producing provinces, the restructured bamboo industry generally presents an unbalanced development state. It is hoped that this technology can actively promote the upgrading of the bamboo industry." Yu Wenji said to

their business is related to 3D printing wire. Note: this reprint is intended to make the oil in the hydraulic cylinder leak back to the obvious source of the oil tank. The reprint is for the purpose of transmitting more information, and does not mean to agree with their views or confirm the authenticity of their content

Copyright © 2011 JIN SHI