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fire, old music makes for great science project - polycarbonate plastic

by:Cailong     2019-07-21
fire, old music makes for great science project  -  polycarbonate plastic
The continuous advancement of science and technology will always leave casualties behind it.
Yesterday's World
Change, Paradigm
The mobile invention is a box that collects dust in your mom's basement today.
Think about the fate of the once indispensable rotating phone, movie camera or video recorder.
If there is any indication of the sales trend, the disc is on its way to join the club.
Cd introduced to the hearing public for the first time in the 1980 s, it provides crazy sound quality with smaller soundsthan-vinyl package.
But the era of digital music means that there are only a handful of records.
Now you can store the full pieces of Burton camings, Brian Adams, and Carly Ray Jepson in a thumb-sized Drive, there is no need to cram 17 jewelry boxes into the passenger seat of your car.
CDs are mainly made of polycarbonate plastic with a thin reflective metal coating (
Usually aluminum)on top.
In addition to this, there is a protective coating and then a protective label.
Most municipal recyclers will not accept it due to the confusion of materials.
Web search may find a company in your area, but if you can't find it, there is still a way to take advantage of raw materials in science and art projects.
In this experiment, you need a coin (
Or something like that)
Scrape off the CD.
You also need a lighter and a CD that you don't want to play anymore.
First scrape off the coating of the disc part and expose the plastic below.
Now keep the disc flat and use the lighter to carefully heat the plastic from below.
Try to avoid direct contact between the flame and the disk to minimize the blackening of the plastic.
Somewhere between 30 seconds and 1 minute, you should see a little divot starting to form.
Once the plastic starts drooping towards the flame, it's time to blow your lips together.
Take the disc a few inches away from your face and blow on the hot spot as if you were blowing soap bubbles.
Your reward should be a long filament foam made of heated plastic.
The bubbles should cool down quickly and there will be consistency in the cling film, although the plastic around the bubble opening may still be hot for the touch, so be aware of these fingers.
Speaking of safety: While you may be very excited to end your brother's Nick bring back series, don't let your enthusiasm go beyond some basic precautions.
This experiment is very interesting for adults.
The melted plastic of fire and heat may not be the best way to entertain you six peopleyear-old niece.
Must also work in the well
Ventilate the area in case of smoke and keep the heat away from any flammable item.
You don't want to explain to your mom that since you 've downloaded Annie Murray's Ultimate Collection to your iPod, you burned a hole in the patio mat, trying to find a new use for hard copy.
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