Table 2 MFR for SharkPellets Figure 2 compounded with 50% filler Melt flow index Conditions g/10 min 150˚C - 2.16 kg 0.02 SharkPellets are available in 4 grades: 150˚C - 5.0 kg 0.11 SharkPelletsC3™: 190˚C - 2.16 kg 1.2 Filtered to remove contamination over 130 190˚C - 5.0 kg 9.4 microns. Moisture < 2 %. Treated with non-sticking additive. PVB reach the best adhesive ability at Colour: Dark grey, dusted 200˚C but it is recommended to limit the time the polymer is heated to this temperature to less than 5 minutes. Reaction with oxygen in the surrounding air begins at 140˚C and becomes a problem at temperature exceeding 220 - 230˚C as the SharkPelletsC2™: material slowly decomposes, loose elasticity Filtered to remove contamination over 130 and becomes discolored of the oxidization microns. products. Unwanted “cinders” can be Moisture < 2 %. composed if PVB is piling up on the forming Treated with non-sticking additive. tool at high temperatures. Colour: Natural, dusted white. Glass transition temperature 17.3˚C (centre point) with an onset value of 3.8 ˚C see fig.1 Specific heat capacity at 50˚C: 1.3 J/g ˚C SharkPelletsC4c™: Postindustrial PVB Filtered to remove contamination over 50 Figure 1 microns. Determination of Oxygen time OIT has been Moisture < 2 %. carried out according to EN 728, 1997 and Treated with non-sticking additive. has a of 0.3 min see fig 2, and can be – Colour: Dark grey, dusted white. modified by anti-oxidizing agents.
Table 2 MFR for SharkPellets compounded with 50% filler Conditions Melt flow index g/10 min 150˚C - 2.16 kg 0.02 150˚C - 5.0 kg 0.11 190˚C - 2.16 kg 1.2 190˚C - 5.0 kg 9.4 PVB reach the best adhesive ability at 200˚C but it is recommended to limit the time the polymer is heated to this temperature to less than 5 minutes. Reaction with oxygen in the surrounding air begins at 140˚C and becomes a problem at temperature exceeding 220 - 230˚C as the material slowly decomposes, loose elasticity and becomes discolored of the oxidization products. Unwanted “cinders” can be composed if PVB is piling up on the forming tool at high temperatures. Glass transition temperature 17.3˚C (centre point) with an onset value of 3.8 ˚C see fig.1 Specific heat capacity at 50˚C: 1.3 J/g ˚C Figure 1 Determination of Oxygen time OIT has been carried out according to EN 728, 1997 and has a of 0.3 min – see fig 2, and can be modified by anti-oxidizing agents. Figure 2 SharkPellets are available in 4 grades: SharkPelletsC3™: Filtered to remove contamination over 130 microns. Moisture < 2 %. Treated with non-sticking additive. Colour: Dark grey, dusted SharkPelletsC2™: Filtered to remove contamination over 130 microns. Moisture < 2 %. Treated with non-sticking additive. Colour: Natural, dusted white. SharkPelletsC4c™: Postindustrial PVB Filtered to remove contamination over 50 microns. Moisture < 2 %. Treated with non-sticking additive. Colour: Dark grey, dusted white.