Nanocomposites with different concentrations of nanofiller were prepared by adding nanosilica filler to the single-phase polyurethane matrix. A control series was prepared with the same concentrations of micron-size silica. The nanosilica filler was amorphous, giving composites with the polyurethane
Investigation on Structures and Properties of Shape Memory Polyurethane/Silica Nanocomposites
β Scribed by Longbin Xu; Yaqin Fu; Mingliang Du
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 488 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0256-7660
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π SIMILAR VOLUMES
Segmented polyurethanes containing soft segments with lower molecular weight exhibit shape-memorizing properties. Structure and properties of shape-memorizing polyurethanes (S-PUS) were studied. S-PUS are characterized by a rather high glass transition temperature: Tg of S-PUS is usually in the rang
## Abstract In this article, thermoplastic polyurethane (PU) with a shape memory property was synthesized. First, the PU prepolymer was prepared by reacting poly(tetramethylene glycol) with 4,4β²βdiphenylmethane diisocyanate, then extended with various extenders such as linear aliphatic 1,4βbutanedi
## Abstract **Summary:** Polyurethane/silica hybrid coatings were prepared via in situ (IS) or blending (BL) method using different acidic silica sols. The effects of preparation methods, silica types, and content on the structure and mechanical properties of the hybrid coatings were investigated.