| 摘要 |
<p>#CMT# #/CMT# Manufacturing thermoplastic polyurethane from polyol and isocyanate, comprises adding polyol and isocyanate in liquid form into a planetary roller extruder, mixing and maintaining the temperature of the starting materials at 110-130[deg] C. #CMT#USE : #/CMT# The thermoplastic polyurethane is useful for producing molded parts, pieces, blocks, plates, sheets, membranes, coverings, pipes, hoses, rods, bars, sections, ribbons, cords, wires, bristles, networks, adhesives, paints, glues, pastes, cements, binders, plaster, fillers, casting and sealing compounds, melting and coating materials, gels, threads, fibers, yarns, silks, ropes, mats, non-woven fabrics and tissues. #CMT#ADVANTAGE : #/CMT# The method provides a homogeneous mixing of reactants with single-mixing effect, prevents adverse mechanical effect on the product. The obtained product has adhesive effect and is relatively soft. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a schematic block diagram of the thermoplastic polyurethane production (Drawing includes non-English language text). 1 : Thermoplastic polyurethane production 2 : Filling section 3, 4, 5, 6 : Planetary roller extruder section 7 : Underwater granulator 8 : Nozzle #CMT#POLYMERS : #/CMT# Preferred Method: The polyol at 110[deg] C +- 10[deg] C and isocyanate at 50[deg] C, +- 5[deg] C are added in the planetary roller extruder. The polyol is added simultaneously with the isocyanate, preferably isocyanate is added in the planetary roller extruder, after the addition of the polyol. The polyol in the planetary roller extruder is dried and degassed before the addition of isocyanate. The raw materials are added entirely or partially between the sections of the planetary roller extruder, which consists of multiple sections. INSTRUMENTATIONS AND TESTING - Preferred Component: A liquid feedstock nozzle ring is arranged between the sections of the planetary roller extruder. #CMT#EXAMPLE : #/CMT# No suitable example given.</p> |
