Recycling of Plastic Materials Part 7 ppsx

... Denmark INTRODUCTION Recycling of pure plastics is not difficult from a technical point of view. How- ever, the majority of municipal solid wastes consists, however, of plastics waste which is often contaminated ... exceeding 1%. Aim of this paper is to present the more recent technologies of automatic sepa- ration of plastic items. A brief paragraph on a typical recycling...

Ngày tải lên: 12/08/2014, 00:20

... 1985-1990, only about 25% of the total quantity of plastics waste is likely to be diverted from the municipal waste stream and recycled. Of this, some 27% , i.e. approximately 7% of the total islikelytocome ... increase in ten years of 1.6% of the 1 976 value. The cost of the necessary labour for hand-dismantling would, however, have risen from $31 to $54, a rise of 74 % on...

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... 143, 144 selection 101 SEM 29, 30, 32, 33, 34, 42, 45, 46, 53, 55, 64, 72 , 73 , 74 , 75 , 76 , 77 , 78 , 91, 162 separation 61, 100, 102, 106, 174 shear rate 44 shrinkage 48 silver 3, 4 stretch-blow-molding ... control 179 Q quality assurance 176 , 182 quality loop 177 R re-use after modification 2, 6 reactive coupling 164 rear shelf 1 37 rheology 42, 43, 66 rigidit 55 road surfac...

Ngày tải lên: 12/08/2014, 00:20

... use the relation (3 .70 ) and therefore ⎥ ⎥ ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎢ ⎢ ⎣ ⎡ = ⎥ ⎥ ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎢ ⎢ ⎣ ⎡ +−− −+− −−+ = 57. 65 870 00 083.1 577 67. 260 17. 2601 07. 260183.1 577 67. 2601 07. 260 17. 260183.1 577 6 000 0 0 0 µ µµµ µµµ µµµ kkk kkk kkk C el while ... single conductor e e 1.2 2 .7 13.5 2 .7 1.2 2 .7 2 .7 1.2 22.2 mm Cross section of the coil Void Figure 3.1. Cross section of a supe...

Ngày tải lên: 10/08/2014, 11:22

... and Recycled Plastics 1 67 Conclusions 168 References 169 Quality Assurance in Plastics Recycling by the Example of Polypropylene 171 Resource Recycling 171 Used Battery Recycling 173 Crushing ... Film Recycling Recycling of Plastic Materials Francesco Paolo La Mantia Editor 3 CP ChemTec Publishing composition but made from virgin polymers. The major problems in recyclin...

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... Bulletin, 174 , 6 (Jan-1992). 4. N. Basta et al., Chem. Eng., 97, 37 (Nov-1990). 5. Brit. Pat. 1. 476 .539 (1 977 ) to Barber-Colman Co. 6. Anon., Manufacturing Chemist, 66, (Mar-19 87) . 7. L. Hellemans, ... 4,008,048 (1 977 ) to Agfa-Gevaert. L. Jeurissen and F. De Smedt, Brit. Pat. 1,486,409 (1 977 ) to Agfa-Gevaert. J. Tempels, Brit. Pat. 1,432 ,77 6 (1 976 ) to Agfa-Gevaert. 8. W. Fish...

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... center of the preform wall, offers a technology of using low cost post-consumer regrind PET bottle resin. • The layer of the melt of reground PET flakes is completely insulated in the middle of the ... properties. 1-5 Es- pecially, the presence of low molecular weight chains and of oxygenated groups affects the properties of a recycled material. In previous works, 6 ,7 a poss...

Ngày tải lên: 12/08/2014, 00:20

... about 7% of total waste. The present paper shows the scheme followed in the development of a strategy of study anddetermination of recycling feasibilityof the plastic wastefraction. Recycling of ... 33 PS 170 9 44 53 72 Mix 1 223 58 n.b. n.b. Mix 2 273 31 78 * n.b. Mix 3 511 19 29* 136* Mix 4 6 07 20 24 200 Mix 5 256 - - 220 Mix 6 3381 - - 56 n.b. = no break *partially br...

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... 820 17 10.4 4.2 3.8 1% EVA 3 87 700 18 11.0 3.9 4.0 1% ClPE 346 75 0 16 15.4 3.2 6.1 1% IMV 245 75 0 18 21.3 3.6 5.8 85% none 375 610 17 9.2 3.8 3.9 1% EVA 408 70 0 23 9.6 3.8 4.0 1% ClPE 316 70 0 ... surface appearance of the injected bars. The changes in the size of the 76 Management of Plastic Wastes Figure 15. SEM micrographs showing the fracture surface of the film pla...

Ngày tải lên: 12/08/2014, 00:20

... phases formed in the blends. In Figure 7, the SEM mi- crograph of a sample of a blend of LDPE and MPW (75 %) highlights the 90 Blends of Polyethylenes and Plastics Waste Figure 6. Stress-strain ... impact strength value. The failuremodeof the wastes is similar tothatof the matrix. 80 Management of Plastic Wastes Figure 21. Results of the ROI for economic study of viability o...

Ngày tải lên: 12/08/2014, 00:20