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Plastic Rich Sample

Protocol number:	M260160
Industry:	Plastics / textiles, Environment
Feed Size:	20.0 mm
Desired Fineness:	95.0 % < 400.0 µm
Quantity:	20.0 g
Recommendation:	For smaller sample quantities, the desired P-29 can be used. Pre-embrittlement of the sample is recommended.

Result 1

	Mini Cutting Mill PULVERISETTE 29 speed: 6000 revolutions per minute
Equipment:	rotor: Rotor with straight cutting edges optional accessories: Helix-Pusher sieve insert: 0,5 mm trapezoidal perforation material: stainless steel
Feed quantity:	5 g
Feed Size:	15 mm
Grinding time:	2 min
Final fineness:	500 µm
Comments:	We used a PTFE beaker and pre-embrittled the sample inside liquid nitrogen. The sample was fed in small portions, but remained significantly longer inside the grinding chamber and had plenty of time to warm up again. After 2 minutes, 3 grams of output were transferred into the collecting vessel. A lot of ground sample remained electrostatically charged below the sieve insert (see Fig. 2). That sample was brushed into the collecting vessel. The sieve insert was clogged by ~ 25 %. A wired brush was required to remove those traces.
Pictures:	Original sample
	Opened grinding chamber after 2 minutes