Thermoplastic polyurethane elastomer, TPU

Polyester and polyether diols are used with MDI in the manufacture of thermoplastic polyurethane elastomers (TPU). The polyester diols are obtained from adipic acid and diols, such as ethylene glycol, 1,4-butanediol, or 1,6-hexanediol. The preferred molecular weights are 1,000 to 2,000, and low acid numbers are essential to ensure optimal hydrolytic stabihty. Also, caprolactone-derived diols and polycarbonate diols are used. Polyether diols are... 

Uses Castors rollers fork-lift/industrial machinery tires oil seals diaphragms Polyurethane elastomer, thermoplastic Synonyms Thermoplastic polyurethane elastomer TPU... 

Thermoplastic polyurethane elastomers (TPU), Elastollan Material Properties. BASF 2009. 

Commercial ABS/TPU blends contain thermoplastic polyurethane elastomer (TPU) as the main blend component. The blends were first introduced in 1990 by Dow Chemical Co., under the trade name Prevail . These blends characteristically exhibited low modulus (340-1,000 MPa) and high impact strength at low temperatures, e.g., notched Izod values of 370-1,500 J/m at —29 °C. The TPU component of the blend imparts high toughness and also allows paintability without a primer. ABS component imparts heat resistance (for paint ovens) and good tensile strength in the blend. The blend was projected to be useful for automotive soft bumper fascias, but faced stiff competition from TPOs. Typical properties of ABS/TPU blends are shown in Table 19.9. 

Polyurethane, PUR thermoplastic polyurethane elastomer, TPU. Applications blocks, plates, formed pieces, cavity forming, composites, coatings, impregnations. 

Zysk, Th., Ehrenstein, G. W. Property Changes of Thermoplastic Polyurethane Elastomers (TPU) in Dynamic Loading, SPE Antec, Detroit 1992, p. 846 - 850... 

Fig. 3.3-62 Thermoplastic polyurethane elastomer, TPU viscosity versus shear rate...

Two Federal Food and Drug Administration (FDA) approved grades of thermoplastic polyurethane elastomer (TPU) with different hardness values were employed in this study. One was a Shore A 85 ( D 29) and the second a Shore D 45. Both TPU materials were Texin grades from Bayer Corporation and had similar melt viscosities. A high... 

Impact-resistant properties, especially at low temperatures, low-temperature toughness, melt-processing properties, and dimensional stability of thermoplastic polyurethane elastomers are improved by the addition of a carbonyl-modified polyolefin [54,55]. These improvements are particularly useful for reinforced polyurethanes. Small amounts of polyolefin homopolymer or copolymer with TPU blends are useful for molding plastic articles by injection molding, extrusion, calendering, or similar process for molding thermoplastic articles [56]. 

PAI Poly(amide imide) TPU Thermoplastic polyurethane elastomer... 

The Pearlthane line of TPU is supplied in pellet form and covers a full range of thermoplastic polyurethane elastomers for extrusion, injection molding. 

Thermoplastic polyurethane elastomer Thermoplastic polyurethane elastomer TPE-U/ TPU Estan, Elastol-lan, Pellethane... 

Thermoplastic polyurethane (TPU) is a type of synthetic polymer that has properties between the characteristics of plastics and rubber. It belongs to the thermoplastic elastomer group. The typical procedure of vulcanization in rubber processing generally is not needed for TPU instead, the processing procedure for normal plastics is used. With a similar hardness to other elastomers, TPU has better elasticity, resistance to oil, and resistance to impact at low temperatures. TPU is a rapidly developing polymeric material. 

The silicone semi-lPNs consist of mixing a hydride-containing silicone prepolymer and a vinyl functionalized silicone polymer into a thermoplastic matrix such as PA, PBT, thermoplastic polyurethane (TPU) or styrene-ethylene/butylene-styrene (S-EB-S) block copolymer elastomer. The two silicone prepolymers co-react in the thermoplastic matrix during melt extrusion and injection molding to form a partially crosslinked network within the thermoplastic matrix. 

Blends of the commodity polymers with more specialty polymers are limited although many specific examples exist in the patent/open literature. In the design of polymer blends for specific application needs, countless opportunities can be envisioned. Examples may include PE/poly(s-caprolactone) (PCL) blends for biodegradable applications (proposed), polyolefin (PO)/poly(vinyl alcohol) (PVAL) blends for antistatic films, PO/silicone rubber blends for biomedical applications, PO/thermoplastic polyurethane TPU (or other thermoplastic elastomers) for applications similar to plasticized PVC, functionalized PO/thermoset blends. 

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