Review of Properties of Polycarbonate Resins

Kazanjian, A.R.

doi:10.1080/03602557308545017

Cited by 10 publications

(4 citation statements)

References 25 publications

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“…Product yield: ∼53%. 1 Synthesis of the Cerium-Based P, N-Containing Complex Ce(DPA) 3 . Ce(DPA) 3 could be synthesized by a solvothermal reaction, as shown in Figure 1b.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…Polycarbonate (PC) has been extensively applied in aviation, construction, medical, electronic, and automobile fields, thanks to its outstanding thermal resistance, toughness, mechanical robustness, and dimensional stability. 1,2 In terms of flammability, PC features a UL-94 V-2 rating with a limited oxygen index (LOI) of 23.0−25.0% due to its intrinsically charring capability. 3 However, PC, as an engineering polymer, is urgently required to achieve a higher fire-resistant ranking in upscale industrial applications (e.g., transparent fireproofing board, covers for driverless vehicles, and architectural lighting equipment).…”

Section: ■ Introductionmentioning

confidence: 99%

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Fabrication and Mechanism Study of Cerium-Based P, N-Containing Complexes for Reducing Fire Hazards of Polycarbonate with Superior Thermostability and Toughness

Sai

Shen

et al. 2021

ACS Appl. Mater. Interfaces

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A superior comprehensive performance is essential for the extensive utilization of polymers. Current flame-retardant strategies for polycarbonates (PCs) usually realize satisfied fire resistance at the cost of thermostability, toughness, and/or mechanical robustness. Thus, we report a rare-earth-based P, Ncontaining complex with a lamellar aggregated structure [Ce-(DPA) 3 ] by a coordination reaction between a tailored ligand and cerium(III) nitrate. The results indicate that incorporating 3 wt % Ce(DPA) 3 enables the resultant PC composite to achieve UL-94 V-0 rating, with a 55% reduction in the peak heat release rate. Besides, the initial (T 5 ) and maximum (T max1 and T max2 ) decomposition temperatures are significantly increased by 21, 19, and 27 °C, respectively, in an air atmosphere. Moreover, the impact strength and elongation at break of the PC composite containing 3 wt % Ce(DPA) 3 are greatly increased by 20 and 59%, respectively, relative to pristine PC, while its tensile strength (57 MPa) is still close to that of bulk PC (60 MPa). Notably, this work provides a novel methodology for revealing the evolution mechanisms of chemical structures of vapor and residual products during thermal decomposition, which is conducive to guiding fire and heat resistance modification of PC in the future.

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“…Product yield: ∼53%. 1 Synthesis of the Cerium-Based P, N-Containing Complex Ce(DPA) 3 . Ce(DPA) 3 could be synthesized by a solvothermal reaction, as shown in Figure 1b.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Fabrication and Mechanism Study of Cerium-Based P, N-Containing Complexes for Reducing Fire Hazards of Polycarbonate with Superior Thermostability and Toughness

Sai

Shen

et al. 2021

ACS Appl. Mater. Interfaces

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“…However, it is well known that this high impact strength is only available in relatively thin sections. Beyond a critical thickness of about Vs in., the impact strength of polycarbonate is dramatically reduced because of a complex change in mechanism of load bearing (86,87). It has been observed that this critical thickness shifts to higher values and can, in effect, be eliminated by addition of small amounts of relatively soft polymers such as polyethylene.…”

Section: "Thermoplastic Elastomers" a New Generation Of Materials Wamentioning

confidence: 98%

A Brief Review of Polymer Blend Technology

Paul

Barlow

1979

Advances in Chemistry

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Thermodynamically miscible, single amorphous-phase multi--component polymer blends with good physical properties are rapidly being discovered as researchers become aware that miscible polymer pairs require chemical structures which form strong specific interactions. Thermodynamically immiscible, multiphase blends continue to be developed as a variety of methods, including use of interfacial agents, morphology control, and interpenetrating network formation, are used to improve physical properties by enhancing interphase stress transfer. Recent commercial applications of both types of blends are given and their economic and property advantages are discussed.T^he concept of appropriately combining together two or more different A polymers to obtain a new material system with the desirable features of its constituents is not new. Over the years, numerous systems based on the chemical combination of different monomers through random, block, and graft copolymerization methods have been developed with this goal in mind. For similar reasons the coating and rubber industries have long blended together different low molecular weight polymers; and particularly over the last decade, the interest in polymer blend systems as a way to meet new market applications with minimum development cost has increased rapidly.It is the purpose of this chapter to briefly examine the present state of the art of polymer blends from both a technical and commercial standpoint. Because of the large variety of blend systems currently being investigated and used commercially, it will not be possible to present an in-depth discussion of specific results. Instead, the first two sections of this chapter will concentrate on the key concepts and fundamental 0-8412-0457-8/79/33-176-315$05.25/0

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“…PC has acquired its own stature among other plastics owing to its temperature and impact resistance, in addition to its optical properties. 542,543 PC is a common polycondensation product resulting from the reaction between bisphenols (or bisalcohols) and a carbonate source. From the vast family of PCs, poly(bisphenol A carbonate) or PC, produced from bisphenol A (BPA) via conjugation with carbonic acid derivatives, is the most commonly used PC material [544][545][546] that is distinguished by its lightweight, ductility, transparency, thermal and flame resistance, high mechanical strength, and high stability against diverse environmental conditions.…”

Section: Application Of Functional Materials and Comparisonmentioning

confidence: 99%