Synergistic thermodynamic compatibility of polydimethylsiloxane block in thermoplastic polyurethane for flame retardant materials: Super flexible, highly flame retardant and low smoke release

Cui, Yongyin; Xu, Zhengshuai; Li, Yongxu; Lang, Xiurui; Zong, Chengzhong; Cao, Lan

doi:10.1016/j.polymer.2022.124976

Cited by 11 publications

(14 citation statements)

References 28 publications

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“…Chemical modification involves the use of end-functionalized polysiloxanes for copolymerization with organic polymers to obtain new polymeric materials [ 27 , 28 , 29 ]. This technique fundamentally improves material compatibility and solves the drawbacks of physical blending [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

Wang

Bai

Sun

et al. 2022

IJMS

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Polysiloxanes have attracted considerable attention in biomedical engineering, owing to their inherent properties, including good flexibility and biocompatibility. However, their low mechanical strength limits their application scope. In this study, we synthesized a polysiloxane-based polyurethane by chemical copolymerization. A series of thermoplastic polysiloxane-polyurethanes (Si-TPUs) was synthesized using hydroxyl-terminated polydimethylsiloxane containing two carbamate groups at the tail of the polymer chains 4,4′-dicyclohexylmethane diisocyanate (HMDI) and 1,4-butanediol as raw materials. The effects of the hard-segment content and soft-segment number average molecular weight on the properties of the resulting TPUs were investigated. The prepared HMDI-based Si-TPUs exhibited good microphase separation, excellent mechanical properties, and acceptable repeatable processability. The tensile strength of SiTPU-2K-39 reached 21.5 MPa, which is significantly higher than that of other flexible polysiloxane materials. Moreover, the tensile strength and breaking elongation of SiTPU-2K-39 were maintained at 80.9% and 94.6%, respectively, after three cycles of regeneration. The Si-TPUs prepared in this work may potentially be used in gas separation, medical materials, antifouling coatings, and other applications.

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Section: Introductionmentioning

confidence: 99%

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

Wang

Bai

Sun

et al. 2022

IJMS

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Section: Resultsmentioning

confidence: 99%

“…As such, with the increasing SWPU concentration, the surface char layer of the glass fiber veil could be further carbonized, as SWPU was able to provide more efficient catalytic carbonization during combustion. 41 In theory, the combustion of composite materials involves two processes: the gas phase and the condensed phase, and the generation of smoke is mostly from the pyrolysis of the resin matrix in the gas phase due to partial combustion. According to the behavior of the composites prepared in this paper, a possible flame-retardant mechanism was proposed (Figure 7).…”

Section: Fire-retardant Performance Testmentioning

confidence: 99%

The carbon fiber/epoxy composites toughened by fire-resistant glass fiber veils: Flammability and mechanical performance

Nie

Yan

et al. 2023

Textile Research Journal

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The fire-retardant properties of high-performance fiber-reinforced composites are the crucial benchmark for composite structure stability. However, in the current flame-retardant solution for composites it is difficult to reach the balance between fire resistance and structural performance due to the deteriorating composite interface. In this work, the carbon fiber-reinforced composite was covered with functional glass fiber layers, in which the glass fiber veil had been treated with flame-retardant agents and silicone-modified waterborne polyurethane, in order to be endowed with flame-retardant capability and structure toughness. As such, a significant improvement in the flame retardancy and mechanical structure of the composites could be observed. When compared with the control, the total heat release and total smoke release for composites with 8% silicone-modified waterborne polyurethane treatment could be decreased by 18.5% and 18.1%, while the tensile and flexural strength were significantly increased by 47.3% and 62.2%, respectively. This well-balanced performance is attributable to the structure design with a toughened glass fiber veil to protect the composite surfaces from fire combustion and structure failure. Therefore, this flame-retardant structure design provides a new strategy to achieve high-performance composites with prospective applications for aircraft and aerospace.

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“…When θ = 180 , the film surface is completely unwetted, indicating that it is fully hydrophobic and has reached a superhydrophobic state. 43 To study the wettability of the polymer film surface, the static contact angle was tested. In addition, the water absorption performance of the film was analyzed to characterize the water resistance of the film material.…”

Section: Water Resistance Analysismentioning

confidence: 99%

Synthesis and performance of hydroxyl‐terminated polysiloxane‐modified polyurethane acrylate films as potential flexible hydrophobic materials

Zhao

Yang

Omoniyi

et al. 2023

J of Applied Polymer Sci

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Hydrophobic materials possess exceptional properties, making them extensively useful in daily production and life. However, developing low-cost and flexible hydrophobic materials remains a challenging task. In this study, a series of composite emulsions were prepared by introducing hydroxylterminated polydimethylsiloxane as a modifier into polyurethane acrylate via a solvent-free approach. The composite emulsions were then used to fabricate polymer films using the solvent evaporation technique. The effects of varying siloxane content on the properties of composite emulsions and polymer membranes were examined. The results showed that increasing the siloxane content improved the hydrophobic properties and flexibility of the film materials. Fourier transform infrared spectroscopy confirmed the introduction of the Si O Si group into the polyurethane chain structure, the absorption peak for asymmetric stretching vibration of Si O Si is at 1100 cm À1 . The mechanical properties test revealed that the film had excellent elongation at break (278.96 ± 0.01%), and a hydrophobic surface with a contact angle of 101.94 was obtained. The composite materials showed improved water resistance and thermal stability with the increase in siloxane content. The hydrophobic film is a promising material for application in decoration, architecture, and flexible wearable devices.

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Synergistic thermodynamic compatibility of polydimethylsiloxane block in thermoplastic polyurethane for flame retardant materials: Super flexible, highly flame retardant and low smoke release

Cited by 11 publications

References 28 publications

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

The carbon fiber/epoxy composites toughened by fire-resistant glass fiber veils: Flammability and mechanical performance

Synthesis and performance of hydroxyl‐terminated polysiloxane‐modified polyurethane acrylate films as potential flexible hydrophobic materials

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