Research on properties of composite based on polyether sulfone/cyanate ester semi‐interpenetrating resin system

Abstract

Cyanate ester (CE) resin is usually used as high-temperature resistant or microwave absorbing material in aerospace field because of its high-glass transition temperature, low-curing shrinkage, and excellent dielectric properties.However, CE resin has the disadvantages of high-curing temperature, high brittleness, and poor toughness, which limits its application in the field of aerospace. In this article, CE resin is modified by high-performance thermoplastic engineering plastic polyether sulfone (PES) to obtain a modified resin with excellent toughness. The thermoplastic/thermosetting semi-interpenetrating network system formed by PES and CE resin can greatly improve the mechanical and thermal properties of PES modified CE resin. The results show that the flexural strength and impact toughness of CE resin castings modified with 10 wt% PES are 56% and 63% higher than those of CE resin castings. At 800 C, the retention weight of CE resin castings with 12.5 wt% PES content increased from 19.0% to 28.1%, which shows that the heat resistance of CE resin is greatly improved by PES. Compared with carbon fiber reinforced CE resin (CF/CE) unidirectional composite, the flexural strength of CF/CE-P-10 composite is increased from 1649.6 to 1959.8 MPa; the interlaminar shear strength is increased from 61.3 to 84.2 MPa; the impact strength is increased from 225.9 to 346.4 kJ/m 2 ; and the interlaminar fracture toughness is increased from 5.34 to 11.38 J/m 2 . K E Y W O R D Scarbon fiber reinforced resin matrix composite, cyanate ester resin, mechanical properties, polyether sulfone, thermal stability | INTRODUCTIONCyanate ester (CE) resin is a kind of high-molecular material with excellent mechanical properties, thermal stability, and dielectric properties, [1] because CE resin forms a highly cross-linked triazine ring network structure in the curing process. However, the triazine ring structure also leads to some disadvantages of high brittleness and risk of fracture for cured CE resin products. Therefore, toughening modification of CE resin is necessary for further broadening its application range. [2][3][4][5][6][7][8][9] At present, the modification methods of thermosetting resin mainly include rubber elastomer modification, [10][11][12] nano inorganic particle modification, [13][14][15] thermoplastic resin modification, and so forth. [16][17][18][19][20] First, rubber elastomer is dispersed in the continuous phase of the resin

Preparation and Biological Characteristics of LDPE/Vanillin-Containing Benzoxazines Composites for Antibacterial Stent Materials

“…The polyether sulfone (PES) and the cyanate (CE) resin were combined to obtain new composites, whose flexural and impact strengths rose by 56 and 63%, respectively. 33 Poly lactic acid and epoxy resin composite materials with superior mechanical properties were produced at a volume ratio of 1:1. 34 A novel composite was created by blending bismaleimide and polyetherketone, whose fracture toughness increased over two times.…”

“…As a typical thermosetting resin, Va-Bz could be directly melt-mixed with LDPE to obtain LDPE/Va-Bz in situ-modified materials, resulting in improved antibacterial and mechanical properties. The polyether sulfone (PES) and the cyanate (CE) resin were combined to obtain new composites, whose flexural and impact strengths rose by 56 and 63%, respectively . Poly lactic acid and epoxy resin composite materials with superior mechanical properties were produced at a volume ratio of 1:1 .…”

Bismaleimide and Biobased Limonene Copolymer Microspheres as Reactive Fillers to Fabricate Low-k, High-Toughness Cyanate Ester Resin Composites

“…CE resins are often used as high-temperature-resistant or transmissive materials in aerospace applications due to their high glass transition temperature, low cure shrinkage, and excellent dielectric properties. However, CE resins have the disadvantages of high curing temperature and poor toughness. − The incongruity between mechanical, thermal, and low- k properties greatly limits their practical application. − …”

Study on liquid oxygen compatibility of poly(phthalazinone ether) resins and their composites

“…18 CE had better thermal and oxygen decomposition resistance and flame-retardant properties than EP due to the unique triazine ring structure generated after curing. 25 Still, the cured CE had defects such as high crystallinity and brittleness, limiting its application in liquid oxygen storage tanks. [25][26][27] Compared with thermosetting resins, which had shortcomings such as high brittleness and poor toughness in low temperatures, thermoplastic resins had excellent toughness since they could absorb external energy through the movement of side groups, chain segments, and other kinematic units in low-temperature environments.…”