Synthesis and characterization of novel polyimides based on 10,10-bis[4-(4-aminophenoxy)-3-methylphenyl]-9(10<i>H</i>)-anthrone

Kuang, Lu; Zhong, Ming; Sang, Xiaoyan; Huang, Zhengkai

doi:10.1080/10601325.2020.1770100

Cited by 4 publications

(4 citation statements)

References 30 publications

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“…The concentration of the solution will be controlled around~10% (wt). The homogeneous and viscous PAA resin was produced with a high inherent viscosity of 1.34-1.75 dL/g, which indicates that the polymeric precursor have a relatively high molecular weight [11][12][13].…”

Section: Preparation Of Copolyamide-imide Membranementioning

confidence: 99%

“…They are hard to simultaneously meet the challenging requirements of high dimensional stability, good optical transmission, excellent mechanical property, and high temperature resistance. And among all the requirements, dimensional stability is the most important factor of materials for diffractive optical Polymers 2021, 13, 1001 2 of 11 use. In the process of material synthesis, storage, structure manufacturing, ground prototype research, and development, PI membranes will face different thermal and moisture environment.…”

Section: Introductionmentioning

confidence: 99%

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Copolyamide-Imide Membrane with Low CTE and CME for Potential Space Optical Applications

2021

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Polyimide diffractive membrane lens can be used in space optical telescope to reduce the size and mass of an imaging system. However, traditional commercial aromatic polyimide membrane is hard to meet the challenging requirements of dimensional stability and optical homogeneity for optical use. Based on molecular structure design and the optimization of fabrication process, the prepared copolyamide-imide membrane achieved the desired performance of membrane as an optical material. It showed a very low coefficient of thermal expansion (CTE), which is 0.95 ppm/°C over a temperature range of −150–100 °C and relatively low coefficient of moisture expansion (CME), which is only 13.30 ppm/% RH (0~90% RH). For the optical use, the prepared copolyamide-imide membrane (φ200 mm) achieved good thickness uniformity with wave-front error smaller than λ/30 (λ = 632 nm) in RMS (root mean square). Besides, it simultaneously meets the optical, thermal, and mechanical requirements for space telescope use. Copolyamide-imide membranes in this research with good comprehensive performance can be used as large aperture membrane optical system architectures.

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Section: Preparation Of Copolyamide-imide Membranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Copolyamide-Imide Membrane with Low CTE and CME for Potential Space Optical Applications

2021

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“…A series-copolymerized thermoplastic polyimides were successfully prepared using 3,4 0 -oxydiphthalic anhydride (a-ODPA), 4,4 0 -oxydiphthalicanhydride (s-ODPA), 9,9 0bis(4-aminophenyl)fluorene (BAFL), and 2,2-bis [4-(4-aminophenoxy)phenyl]propane (BAPP) by Cao et al 28 They reported the glass transition temperature (T g ) of these polyimides, with different ratios, to be in the range of 235-305 C. They were completely soluble in DMF, DMAc, and NMP within 3 h, indicating that they had excellent solubility. Furthermore, Kuang et al 29 successfully prepared a new diamine, namely, 10,10-bis [4-(4-aminophenoxy)-3-methylphenyl]-9(10H)-anthrone (BAMPA), which contains bulky 9(10H)-anthrone units. A series of polyimides that contain methyl substituents and 9(10H)-anthrone pendant groups was prepared from this diamine with various aromatic dianhydrides using polyamic acid (PAA) precursors via a thermal or chemical imidization procedure.…”

Section: Introductionmentioning

confidence: 99%

“…They were completely soluble in DMF, DMAc, and NMP within 3 h, indicating that they had excellent solubility. Furthermore, Kuang et al 29 successfully prepared a new diamine, namely, 10,10‐bis[4‐(4‐aminophenoxy)‐3‐methylphenyl]‐9(10H)‐anthrone (BAMPA), which contains bulky 9(10H)‐anthrone units. A series of polyimides that contain methyl substituents and 9(10H)‐anthrone pendant groups was prepared from this diamine with various aromatic dianhydrides using polyamic acid (PAA) precursors via a thermal or chemical imidization procedure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of melt‐processable polyimides derived from diaminodiphenylsulfone and benzophenone tetracarboxylic dianhydride with excellent heat resistance and thermoplasticity

Zhou

Zhang

Mao

et al. 2021

J of Applied Polymer Sci

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Polyimide has excellent heat resistance, dielectric properties, and mechanical properties, and has a wide range of applications in aerospace, electronic packaging, and insulating materials. However, traditional polyimide is difficult to melt and dissolve, and its processing is difficult, which has become an important reason limiting its practical application. Therefore, the development of high temperature-resistant thermoplastic polyimide has become a research hotspot. To prepare high temperature-resistant thermoplastic polyimide materials, a series of thermoplastic polyimides was successfully prepared using 3,3 0 ,4,4 0 -benzophenone tetracarboxylic dianhydride, 3,3 0 -diaminodiphenylsulfone, 2,3 0 ,3,4 0 -benzophenone tetracarboxylic dianhydride, 9,9-bis(4-aminophenyl) fluorene, and 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane via a two-step method. The effects of non-coplanar structure and bulky groups on the solubility, processability, and thermal properties of polyimide were studied. The structure, heat resistance and thermoplasticity of polyimide were characterized via various methods. The results show that the glass transition temperature of the prepared thermoplastic polyimide is between 292 and 302 C, and has excellent thermal resistance. The processing viscosity of polyimides is as low as 9210 Pa.s, and it has a certain degree of processing properties. It may be designed to be used in high temperature-resistant hot melt adhesives for structural components, high temperature-resistant melt processing resins, or thermoplastic composite materials used in the field of aerospace in the future.

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Soluble, transparent and heat-resistant fluorinated copoly(ether imide)s containing pyridyl and biphenyl units in the main chain

Zhou

Hong²,

Zhang

et al. 2022

Journal of Macromolecular Science, Part A

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Synthesis and characterization of novel polyimides based on 10,10-bis[4-(4-aminophenoxy)-3-methylphenyl]-9(10H)-anthrone

Cited by 4 publications

References 30 publications

Copolyamide-Imide Membrane with Low CTE and CME for Potential Space Optical Applications

Copolyamide-Imide Membrane with Low CTE and CME for Potential Space Optical Applications

Synthesis and characterization of melt‐processable polyimides derived from diaminodiphenylsulfone and benzophenone tetracarboxylic dianhydride with excellent heat resistance and thermoplasticity

Soluble, transparent and heat-resistant fluorinated copoly(ether imide)s containing pyridyl and biphenyl units in the main chain

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