Oligomeric silsesquioxane reinforced polyurethane with enhanced coating performance

Mirchandani, Girish; Waghoo, Gulzar; Parmar, Randhir; Haseebuddin, Syed; Ghosh, Swapan K.

doi:10.1016/j.porgcoat.2009.03.009

Cited by 23 publications

(5 citation statements)

References 14 publications

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“…Moreover, the height of the tanδ peak, which is associated with the crosslink density, decreases as the ATO content increases. Crosslinking is often seen to cause a decrease in tanδ and an increase in peak width [16]. The tanδ values for all WPUA/ATO films are less as compared to WPUA indicating that all WPUA/ATO films have higher crosslinking density over pure WPUA.…”

Section: Dynamic Mechanical Thermal Analysis (Dmta)mentioning

confidence: 97%

Effect of antimony doped tin oxide on behaviors of waterborne polyurethane acrylate nanocomposite coatings

Wang

Song

et al. 2010

Surface and Coatings Technology

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Section: Dynamic Mechanical Thermal Analysis (Dmta)mentioning

confidence: 97%

Effect of antimony doped tin oxide on behaviors of waterborne polyurethane acrylate nanocomposite coatings

Wang

Song

et al. 2010

Surface and Coatings Technology

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“…(b) A histogram of tensile strength and elongation at break of Si-TPUs with different HS contents. (c) Mechanical performance of PDMS2K-39 (red markers) together with reference results from other reported Si-based materials. ,− (d) Representative stress–strain curves of PDMS2K-39 after multiple recycles.…”

Section: Results and Discussionmentioning

confidence: 99%

Unprecedented Strength Polysiloxane-Based Polyurethane for 3D Printing and Shape Memory

Wang

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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Thermoplastic polysiloxane-based polyurethane (Si-TPU) has been attracting a great deal of attention because of the dual advantages of polysiloxane and polyurethane. However, the strength of Si-TPU with a traditional structure is low, and improvement is urgently needed for diverse applications. Herein, we design a polysiloxane-based soft segment (SS) with two urethane groups at the end of the polysiloxane chain, and then we prepare a series of Si-TPUs through a designed SS, isophorone diisocyanate and 1,4-butanediol. Such structural design improves the polarity of the SS and endows more regular hydrogen bonds to the polymer molecular chain. As a result, the prepared Si-TPUs exhibit a good microphase separation structure, unprecedentedly high strength, repeatable processing, noncytotoxicity, shape memory properties, and three-dimensional printing capabilities. Moreover, a maximum tensile strength of Si-TPUs can reach 20.3 MPa, exceeding that of other existing Si-based polymer materials. Si-TPUs show great potential for biomedical applications.

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“…W przypadku poliuretanów modyfikacja za pomoc¹ POSS, zarówno na drodze reakcji chemicznych, jak i fizycznego mieszania komponentów, prowadzi do wzmocnienia matrycy polimeru na poziomie cz¹steczkowym. W efekcie uzyskane materia³y kompozytowe cha-rakteryzuj¹ siê lepsz¹ ni¿ polimer bazowy twardooeci¹ i odpornooeci¹ na zarysowania, wytrzyma³ooeci¹ na roz-ci¹ganie, odpornooeci¹ ciepln¹, po³yskiem i jakooeci¹ (w przypadku pow³ok) [8]. Zmniejszenie ilooeci wydzielanych lotnych produktów degradacji wyraŸnie oewiadczy o zwiêkszeniu stabilnooeci termicznej poliuretanów, podobnie jak innych materia³ów hybrydowych zawiera-j¹cych POSS [9].…”

Section: Wstêpunclassified

POSS compounds as modifiers and additives for elastomeric composites

et al. 2013

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Zwi¹zki POSS jako modyfikatory i dodatki do kompozytów elastomerowychStreszczenie -Zbadano mo¿liwooeae zastosowania silseskwioksanów (POSS) w charakterze na-pe³niaczy b¹dŸ modyfikuj¹cych dodatków do elastomerów: kauczuku metylowinylosilikonowego (MVQ) oraz uwodornionego butadienowo-akrylonitrylowego (HNBR). Stwierdzono, ¿e odpowiednio sfunkcjonalizowane silseskwioksany mog¹ braae udzia³ w sieciowaniu kauczuków, zwiêkszaae ich wytrzyma³ooeae mechaniczn¹, zw³aszcza w temp. -50 °C, ograniczaae dzia³anie czynników starzeniowych oraz korzystnie poprawiaae hydrofobowooeae powierzchni, wp³ywaj¹c jednoczeoenie na barierowooeae wobec tlenu. Dodatek do wulkanizatów kauczuków zwi¹zków POSS zawieraj¹cych kwasowe lub zasadowe ugrupowania pozwala na otrzymanie materia³ów obdarzonych zdolnooeci¹ do samonaprawy. S³owa kluczowe: kompozyty elastomerowe, silseskwioksany, kauczuk silikonowy, uwodorniony kauczuk butadienowo-akrylonitrylowy. POSS COMPOUNDS AS MODIFIERS AND ADDITIVES FOR ELASTOMERIC COMPOSITESSummary -The possibility of using silsesquioxanes (POSS) as nanofillers or modifying additives to elastomers: methylvinylsilicone (MVQ) and hydrogenated butadiene-acrylonitrile (HNBR) rubber was studied. It was found that suitably functionalized silsesquioxanes can take part in the cross-linking of rubbers and increase their mechanical strength, especially at temperature of -50 °C. They can also reduce the ageing effects and increase the surface hydrophobicity, while at the same time influencing oxygen barrier properties. The addition of POSS compounds containing acidic or basic groups to rubber vulcanizates enables the preparation of materials with self-healing properties.

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Oligomeric silsesquioxane reinforced polyurethane with enhanced coating performance

Cited by 23 publications

References 14 publications

Effect of antimony doped tin oxide on behaviors of waterborne polyurethane acrylate nanocomposite coatings

Effect of antimony doped tin oxide on behaviors of waterborne polyurethane acrylate nanocomposite coatings

Unprecedented Strength Polysiloxane-Based Polyurethane for 3D Printing and Shape Memory

POSS compounds as modifiers and additives for elastomeric composites

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