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Abstract
Although they are relative newcomers to the composites industry, cyanate ester (CE) resins are enjoying unprecedented success in certain applications. Several major space and radome manufacturers have qualified CE resins despite the extensive database on epoxies and the inherently conservative nature of the industry. Increasing demands on the materials used in these areas have stimulated the use of CE resins over other more conventional polymers. The aim of this review is to bring to the reader’s attention the more recent developments in the processing, toughening, properties and applications of cyanate esters, an exciting, versatile and important class of resins.
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Affiliation(s)
| | - John N Hay
- Department of Chemistry, School of Physical Sciences, University of Surrey, Guildford, Surrey GU2 5XH, UK
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Anuradha G, Sarojadevi M. Synthesis and Characterization of Schiff Base Functionalized Cyanate Esters/BMI Blends. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008306069758] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A range of Schiff base functionalized cyanate esters and their precursors were prepared in high yield and characterized using Fourier transform infrared, 1H-nuclear magnetic resonance spectroscopy and elemental analysis. One of the dicyanates was blended with bismaleimide (BMI) at various proportions to increase the toughness of BMI. The thermally initiated polymerization was studied by differential scanning calorimetry. Cure studies reveal that BT4 (1: 1 weight ratio of cyanate ester and BMI) was more compatible. The thermal stability of the bismaleimide-riazine (BT) resins was studied using TGA. The 10% weight loss temperatures in N2 were above 380°C with char yield in the range of 72-86%. Moisture absorption of these blends was in the range of 0.3-2%. Chemical resistance of the BT resins was also studied towards acids, alkali and ketone solvent.
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Affiliation(s)
- G. Anuradha
- Department of Chemistry, Anna University, Chennai-600 025, India
| | - M. Sarojadevi
- Department of Chemistry, Anna University, Chennai-600 025, India
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Anuradha G, Sarojadevi M, Sundararajan PR. Synthesis, cure kinetics, and thermal properties of the Bis(3-allyl-2-cyanatophenyl)sulphoxide/BMI blends. J Appl Polym Sci 2008. [DOI: 10.1002/app.28638] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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The effect of curing reaction on mesophase-rich islands of segmented main chain liquid crystalline oligoesters. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2006.03.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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