Carbon fiber by industry praise the ” of gold of king ”“ black that is “ material. It has weight light, intensity is mixed high anti-corrosive wait for a characteristic, be applied extensively at equipment of bridge of lamina of report of aviation, spaceflight, the sources of energy, traffic, wind, building, for military use to wait for a domain, it is national defence war industry and the important material that civil production lives.
Carbon fiber composite material
In recent years, enter fast hair exhibition period as carbon fiber industry, carbon fiber composite material applies a quantity to increase ceaselessly, the flotsam of the generation in producing a course is increasing also. The expert inside course of study points out, each link of catenary of carbon fiber industry can produce litter, the discard as uselessing in producing production course only is led be as high as 30% ～ 50% . And CFRP is repaired very hard, although one part damages,also can be discarded. Fall in natural condition as a result of carbon fiber composite material cannot degradation, much waste and flotsam can undertake filling burying only. According to statistic, only global carbon fiber made dosage achieves ninety-two thousand six hundred tons 2018, among them, discard as useless the quantity is thirty thousand three hundred tons. Can cause pollution to the environment not only so, also be the great waste to resource.
Deserted CFRP
Normal temperature CFRP is decomposed reclaim technology
Study the group developed a kind of technology that can decompose CFRP simply below microtherm. In the word that CFRP immerses in solution, short time is OK depart carbon fiber and colophony, recycle can reclaim colophony raw material in the meantime. This CFRP that will handle hard returns raw material again, can circulate entirely the technology of recycle can say is a revolutionary new technology. The inspiration of this technology comes from the oxidation that happens within human body the structure of reductive reaction.
The reason with powerful CFRP depends on carbon fiber and plastic combination. Carbon fiber nots allow to be broken easily, very strong, but bend very easily. If use agglutinate of colophony general carbon fiber, can make the outstanding material that holds a small amount and intensity concurrently, realize the carbon fiber of breathtaking intensity and plastic strong union, but contrary, this also is the obstacle with circular big recycle.
The hot solid sex that CFRP uses is plastic, once caky, resolve special difficulty, can bury processing through burn for long or be being filled only. Have before use the drug that can destroy the S-S inside CFRP to bolt Qiu radical alcohol undertakes reclaiming, but drug noxiousness is too strong, both neither is safe also not environmental protection.
Group of research and development changed the look to material of a kind of natural biology, after dissolving this biology material with water, rejoin organic dissolvent, put CFRP among them, after the agitate below normal temperature counts a hour, the colophony in CFRP is dissolved in fluid photograph. Its principle is the property that used biology structure data, the S-S in CFRP key undertook recombining, replace the S-S in colophony to bolt, the colophony after decomposing is deliquescent in organic dissolvent.
Through replacing CFRP medium S-S bolts implementation is decomposed
Be in CFRP macerate in solvent after → agitate colophony of 3 hours of → is completely deliquescent, carbon fiber is come out by complete depart the solution after →CFRP is decomposed
Last word
Below the case that does not use harmful preparation, need to join biology material to be able to decompose solid CFRP in solution only this one technology of hand-in-hand travel recycle, hopeful becomes key of all-pervading of CFRP of times of energy-saving, environmental protection to be in.