Haake mixer

Cyclic butylene terephthalate oligomers were heated for 3 minutes in a bowl of a Haake mixer to 230°C and lOOrpm. This was then treated with 0.003 mol of 1,3-diacetoxy-1,1,3,3-tetrabutyldistannoxane per mole of cyclic butylene terephthalate. The mixture was heated for 4.5 minutes, and the resulting polymer was recovered. 

Internal mixers, such as the Banbury mixer (Fig. 23.3), and the laboratory Brabender or Haake mixers contain two connecting chambers, in which blades rotate in opposite directions with a narrow clearance to the walls, resulting... 

Thermoplastic starch can be plasticized with a mixture of glycerol and PBSU. The blends have been prepared in a Haake Mixer (33). 

Wu et al. reported that a new kind of NR/organo-vermiculite (OVMT) nanocomposite was prepared via a melt process in a HAAKE mixer. The resultant mixtures were further pressed to vulcanize at 140 °C, and vulcanized sheets were obtained. The vermiculite (VMT) was intercalated by cetyl-trimethylammonium bromide with a ball mill method to obtain used OVMT. The results showed that the intercalation led to an increase in the dfooj) of VMT from 1.46 nm to 4.51 nm. Meanwhile, they found that the tensile strength and the elongation at break of the NR/OVMT nanocomposites loading 15 phr of the OVMT reached 28.4 MPa and 623.2%, respectively. The 300% modulus, tear strength and hardness (Shore A) of the nanocomposites increased with the increase in OVMT loading. The thermal properties of the NR/OVMT nanocomposites were also improved. 

PA-6/PC Haake mixer at 280 °C/evidence for copolymer formation/reaction kinetics/ also blends including poly(propylene oxide) Costa and Oliveira 1998, 2002... 

Weber and Giintherberg (1999) have prepared compatibilized blends of PA and polyethersulfone in the presence of S-MA-(N-phenylmaleimide) terpolymer. In the examples, the PA was derived either from hexamethylenediamine-isophthalic acid or from hexamethylenediamine-caprolactam-terephthalic acid. Blends comprising PA, an amine-terminated polyethersulfone, and S-MA-(N-phenylmaleimide) terpolymer prepared in a Haake mixer were characterized using mechanical properties testing, selective solvent extraction, DSC, and Vicat B test. Blends optionally contained phenoxy resin. 

PBT (80)/EVAc-g-MA (20) Haake mixer/torque rheometry/BTlK/SEM/ mechanical properties vs. blend with unfunctionalized EVAc Kim et al. 2003, 2001a... 

Zhang and Hourston (1999) prepared blends of PBT and either LDPE or EPDM in the presence of a bismaleimide in a Haake mixer. A copolymer formatirai mechanism involving radical coupling was proposed. 

PC/HDPE/EAA/dibutyltin oxide catalyst Haake mixer/SEM/DSC/rheology/ formation of PC-EAA copolymer Yin et al. 2007... 

Poly(lactic acid)/PB-f-epoxide/PP Haake mixer/torque rheology/DSC/ comparison to blend without PB-f-epoxide or with unfimctionalized PB Li et al. 2012b... 

PBT/EPDM-f-epoxide/PP Haake mixer/SEM/FTIR/torque rheometry/mechanical properties/EPDM functionalized using performic acid Ao et al. 2007b... 

Lee and Park (2000) found evidence for copolymer formation in blends of anhydride-terminated PC and oxazoline-functionalized PS prepared in a Haake mixer. Blends were characterized by torque rheometry, SEM, FTIR, NMR, and mechanical properties. Anhydride-terminated PC was prepared by reaction of PC phenolic end-groups with trimellitic anhydride acid chloride (cf. Hathaway and Pyles 1988, 1989). 

PP/PP-g-GMA/SEBS-g-MA Haake mixer/FTIR/mechanical properties/ SEM/torque rheometry/effect of GMA and of MA loading Ao et al. 2007a... 

Cho and Kamal (2002) derived equations for the affine deformation of the dispersed phase, using a stratified, steady, simple shear flow model. It includes the effects of viscosity ratio and volume fraction. According to the equation, for viscosity ratio > 1, the deformation of the dispersed phase increases with the increase of the dispersed phase fraction. For compatibiUzed PE/PA-6 blends at high RPM (i.e., 100, 150, and 200 RPM) in the Haake mixer, the particle size decreases with concentration of the dispersed phase up to 20 wt%. This occurs because the total deformation of the dispersed phase before breakup increases as the volume fraction increases, and coalescence is suppressed. The increase of the particle sizes between 20 and 30 wt% results from the increase of coalescence due to the high dispersed phase fractions. The data for 1 wt% blends suggest that mixing in the Haake mixer follows the transient deformation and breakup mechanism, and that shear flow is dominant in the mixer. 

Fig. 15 Strain sweep tests on various SBR1500 based materials gum SBR is a sample cut from the bale compounds were prepared in a Haake mixer with Banbury rotors according to the following formulation (phr) SBR 1500 100 N330 Carbon Black 0, 30 or 50 Naphtenic Oil 5 Zinc oxide 5 Stearic acid 3 TMQ (trimethylquinoline, polymerized) 2 IPPD (N-isopropyl-N -phenyl-p-phenylene diamine) 1...

A batch mixer (Haake Buchler Rheocord system 40 with a Rheomix 600, 50 cm capacity) was used for preparing the blends. The peroxide and material used as the vector fluid were dry-blended with PE and PS pellets at room temperature. A total charge of 45 g of the mixture was then fed into Haake mixer and blended at 200 C and 100 rpm for 5 minutes. 

Figure 3 Complex dynamie and shear viseosity as a ftmetion of frequeney or shear rate for PLA and AAC at 190°C before and after mixing in Haake mixer at T=190°C. Open symbols represent eapillary data.

Figure 5 Storage modulus as a ftmetion of frequeney at 190°C for PLA resin proeessed in Haake mixer and blend with PLA eontent 90 wt %.

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