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Cai H, Shi J, Zhang X, Yang Z, Weng L, Wang Q, Yan S, Yu L, Yang J. Characterization of Mechanical, Electrical and Thermal Properties of Bismaleimide Resins Based on Different Branched Structures. Polymers (Basel) 2023; 15:polym15030592. [PMID: 36771893 PMCID: PMC9919665 DOI: 10.3390/polym15030592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 01/27/2023] Open
Abstract
Bismaleimide (BMI) resin is an excellent performance resin, mainly due to its resistance to the effect of heat and its insulating properties. However, its lack of toughness as a cured product hampers its application in printed circuit boards (PCBs). Herein, a branched structure via Michael addition was introduced to a BMI system to reinforce its toughness. Compared with a pure BMI sample, the flexural strength of the modified BMI was enhanced, and its maximum value of 189 MPa increased by 216%. The flexural modulus of the cured sample reached 5.2 GPa. Using a scanning electron microscope, the fracture surfaces of BMI samples and a transition from brittle fracture to ductile fracture were observed. Furthermore, both the dielectric constant and the dielectric loss of the cured resin decreased. The breakdown field strength was raised to 37.8 kV/mm and the volume resistivity was improved to varying degrees. Consequently, the resulting modified BMI resin has the potential for wide application in high-frequency and low-dielectric resin substrates, and the modified BMI resin with a structure including three different diamines can meet the needs of various applications.
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Affiliation(s)
- Haihui Cai
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Jiahao Shi
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Xiaorui Zhang
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
- Correspondence: (X.Z.); (Z.Y.)
| | - Zhou Yang
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
- Harbin Institute of Large Electrical Machinery, Harbin 150040, China
- State Key Laboratory of Hydropower Equipment, Harbin 150040, China
- Harbin Electric Machinery Company Limited, Harbin 150040, China
- Correspondence: (X.Z.); (Z.Y.)
| | - Ling Weng
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Qingye Wang
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Shaohui Yan
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Lida Yu
- School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Junlong Yang
- Harbin Electric Machinery Company Limited, Harbin 150040, China
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Zhao Z, Wang J, Wang J, Chen K, Zhang B, Chen Q, Guo P, Wang X, Liu F, Huo S, Yang S. Facile fabrication of single-component flame-retardant epoxy resin with rapid curing capacity and satisfied thermal resistance. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105103] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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