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What is carbon fiber?Carbon fibre details
2016-06-14
This article is significant Shen'ao extraordinary, beginning with the first intentional ordinary people do not understand the argument to define the look good. Carbon fiber is defined: stable carbon molecules continuous layered structure composed of continuous fiber material.
Carbon fiber diameter is only 1/50 of hair, this is hair, his imagination 1/50 of a fine wool
OK, into the second section, then we start talking about this thing K. Generally "K number" refers to a bundle of carbon fibers have several thousand filaments. 3K carbon fiber refers to a bundle of 3,000 filaments of carbon fiber, 12K refers to a bundle of carbon fibers 12,000 filaments of carbon fibers. If you do not see the dancing, it should be seen the introduction of the first paragraph, should know a single carbon fiber look like it is, of course, a bunch of long carbon fiber probably look like this.
Typically, however, the human eye is not look at the situation like the one above it.
Normal human eye looks like this below
Obviously, 12K carbon fiber looks rough and dark than the 3K carbon fiber.
T300, T600, T700, T800, T1000 of difference
Then tell the difference these models, these are Japan Toray (TORAY) the company's carbon fiber models. Because Toray company too Cock, make carbon fiber of Toray who heard ah.
Therefore, the remaining few companies will imitate Toray carbon fiber production company's production level. In terms T700 grade, carbon fiber production and the remaining three companies have exactly the same intensity products. If you see the frame description written above: the use of carbon fiber T700 "grade", then you can reasonably suspect that he will use other company's carbon fiber (such as FPC 12K36S).
Back to the topic, because these models are in accordance with the strength of the original company Toray points down, so the strength of carbon fiber T300 <T600 <T700 <T800 <T1000 is no doubt. But there is a focus, but also the most misunderstood
Please look at the table, this is the TORAY company's latest catalog (Note Number of filaments in the column on behalf of a few K)
Noticed? Advanced cargo (T600 above) not only production of 12K, 24K carbon fiber strength of that level to be the worst T300 1K, 3K carbon fiber. So if it is alone strength, 1K, 3K carbon fiber is usually far less than 12K, 24K carbon fiber (though the price of the more expensive the smaller K, proportional to the number) (strength with knitting method did what great relationship, the next section will explain NOTE: the frame uses 1K, 3K carbon fiber are also part only the appearance of the surface of the outermost sheet)
The difference between woven and UD
The above described carbon fiber has been completed, the following began forming the basis of some of the carbon fiber. I say that speed is too fast it? If you think my classmates introduced too fast, slow down, please see trouble? Let's continue, although it is a bunch of a bunch of carbon fiber, but this bike is not used in the field of carbon fiber, but "with carbon fiber sheet" this material. What is the carbon fiber sheet to it? Probably can be divided into roughly two
This staggered above is woven (Woven Fabric) schematic diagram below is a schematic diagram of such a single direction unidirectional fabric (Unidirection Prepreg) of
Since there are two different types, that means woven (woven) and unidirectional fabric (UniDirection) used on the bike have their advantages and disadvantages
Woven Advantages: Attractive, interlaminar shear stress (behind the point is that I managed to think out); woven Disadvantages: low intensity, expensive (weave need to spend money).
Most people have to see the carbon fiber weave pattern, I will feel there is carbon fiber, and the smaller the number of K carbon fiber weave pattern better look out, it is generally woven using 1K, 3K carbon fiber weave. However, 1K, 3K carbon fiber strength is not high and expensive, so I had to come with a layer of the outermost layer when the appearance of wood. Also worth mentioning is that, in a 1K, 3K carbon fiber when large stock,
A home vendors actually work to develop a so-called marbling appearance of this popular variant pattern, turns out to be a model for Taiwan SMEs resilience ah.
Unidirectional fabric advantages: high strength and stability, stack angle can be designed, cheap. Unidirectional fabric Cons: after forming the outside is not carbon fiber, a lot of people know the carbon fiber fabric is a layer of a laminated, so the benefits of unidirectional fabric can change as the design point of view to apply different direction of the force.
Coupled with the strength of unidirectional woven fabric is much higher than, the current bike carbon fiber components in addition to the outermost layer, the inner layer (about 10 to 30 layers, each of the different manufacturers) are almost always one-way cloth.
This society is very real, the carbon fiber in the world, too, that not the outermost layer of skin, you would think highly of him?
Differences in strength and modulus
Strength (Tensile Strength) and modulus (Tensile Modulus) different
In simple terms, the higher the intensity of the continuous pull, the more low intensity light pull on the break; the higher the modulus of hard and lower modulus completely powerless. For these two features have bike needs.
General T700, T800, T1000 is the strength of demand for so-called M35J, M50J, M60J is a demand for the modulus. Bicycle speaking, T1000 strength, although high, but certainly can not be the vehicle are used T1000, and M60J modulus although heaven, is absolutely unable to have the vehicle with M60J carbon fiber.
A ride up the car must be of moderate hardness T-series and M series of carbon fiber has, in addition to the depot so conscientious label use T1000 carbon fiber reinforcement for strength, it will also be noted modulus is M60J reinforcement, make information transparent. But then, again with a conscience depot, as long as the strength and weight of demand is reached, there will be more or less the frame put some T700 to reduce the cost of it. I once had seen a price above € 15,000 European car depot, which is still a part of the frame to give him secretly using the T700 carbon fiber, ah, this is the concept of the cost ah.
But here we must make is, M60J mainly modulus carbon fiber reinforced series, so do not look as if his strength is lower than the T800, thought he was a third-rate carbon fiber.
Come on, M60J modulus is more than twice the T1000 ah. Frankly, to buy the T1000 carbon fiber, not necessarily to buy M60J carbon fiber, carbon fiber M60J expert in the eyes of the cladding is simply Toray developed a great work of art ah.
Comprehensive today said talking about, and I hope that we can help a little more. Briefly carbon frame does not need to pay attention to in the end is a few K, it would only have a relationship with the outermost layer of the tread. If you really care about, it is better to understand the frame in which the use of carbon fiber. T700 or T800 or T1000, the proportion of how much? M35 or M50 or M60, the proportion of how much? But then again, I know how to ride it will fly it?
Source:Bicycle China
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