But according to American country but lab of second birth the sources of energy (NREL) the scientist says, it still needs to perfect ability to make public marketplace car becomes economy is substantial. “ carbon fiber is very expensive, he explains ” . “ production carbon fiber also is the sources of energy concentrated model, it is so right greenhouse gas (GHG) not complete and friendly. Make the carbon fiber that reclaims easily be in this two respects are helpful. ”
As a result of the newest progress that makings of biology base material designs, the industry of carbon fiber recovers to had been in possibly nearly very close.
The project of composite material core that supports through office of technology of car of American energy department, the other researcher of Rorrer and NREL has proved, pass those who introduce easier degradation base round, use biology radical composite material of production carbon fiber of epoxy resin and acid anhydride stiffening agent, make material can reclaim completely. In fact, circular process calls methanol to decompose, can have below room temperature be sparked optionally, and won't reduce fibrous quality or orientaton. The delegate wore this likelihood to stride to circular data one stride, when this kind of material can make carbon fiber is used in many lifecycle cheaper, more environmental protection.
Close quarters observes carbon fiber
Solid, deft and cannot reclaim the carbon fiber of —— nowadays is through will braiding what shape of glue of carbon filament park makes in epoxy resin, this kind of material can improve car performance, but cannot reclaim effectively.
Carbon fiber already solid deft, its advantage comes from his statified design. It is the composite material that epoxy resin coating comprises the glue state that heats up ” of solid sex colophony with the “ that be called by pure carbon filament. When solidify, the element in liquid state colophony is united in wedlock each other and around braid carbon filament, sclerosis becomes solid and hard crystal lattice system.
When use mould is produced, this material can use all sorts of figure, use at all sorts of application, wait a moment to lamina of wind- driven dynamo from car bumper.
However, the hot solid sex of solidify epoxy resin makes these high grade the product is decomposed hard, fall in the circumstance of carbon filament of not serious damage especially. The product that makes by carbon fiber (although the price is high) can be normally when its life is terminative be filled to bury toward rubbish by carry, any efficiency income that they may get along with.
In fact, although carbon fiber is OK,reduce a model half —— to improve its fuel efficiency by the weight that uses a car amount to 35%—— but the greenhouse gas that any efficiency advantages are used at making it is concentrated model the sources of energy offsetted effectively. Synthetic carbon fiber needs to exceed the temperature of 1000°C.
This one reality lets researcher think: Does “ have method to repeat use carbon fiber to make a round trip to receive this fiber and achieve more value and environmental beneficial result in a variety of substance life?
Make through the design epoxy resin can reclaim the chemistry that studies group opposite matter has a test, give a kind with understanding it to whether can be made new can reclaim epoxy resin. With oil medium hydrocarbon photograph is compared, raw material contains the oxygen of higher level and nitrogen, offerred distinct chemical possibility.
Relevant personnel explanation says: “ we from redesigned colophony of annulus oxygen amine substantially, namely the colophony of carbon fiber is medium hot solid sex near the line, among them epoxy resin and acid anhydride are by raw material complex, basically be change complex by the biology of candy and chemistry. ” . We had proved “ , the colophony that makes up afresh can maintain and / or exceed resinous of today's annulus oxygen amine all and same function, but also can make through design and room temperature its can reclaim. ”
NREL group uses a kind of special activator, biology radical colophony can be decomposed below room temperature, this one process is called “ depolymerization ” . This makes they can restore carbon filament, maintain its at the same time quality and arrange.
“ we can maintain fiber quality inside lifecycle of at least 3 material actually, ” researcher says. “ accordingly we can reclaim not only carbon fiber; Undertake below the circumstance that still can not damaging property even. We did not undertake demoting circular using to material at all. ”
Combinative NREL regards carbon fiber van as the research of body to nitrile of propylene of low cost, biology radical, the breakthrough of epoxy resin respect may conduce to greatly make carbon fiber composite material provides cost effectiveness and environmental protection more.
Can be extracted and reclaim carbon fiber can make this kind of stuff right the electric car of public marketplace more economy, vacate weight and space for batteries thereby. It still reduces the greenhouse gas discharge capacity of material 20%–40% . Better is, the implementation below the circumstance that it is not raising production cost is all these, because researcher reckons the epoxy resin of NREL is OK with with current oil base the price production with roughly same colophony of annulus oxygen amine.
“ through using biology radical raw material is not petrifaction raw material, we need not use additional energy resources to transform their chemical considerably, ” researcher complements. “ this makes we can design the advanced stuff that has function and environmental advantage effectively. ”
