Kolesnikov, Timofey I.;Orlova, Alexandra M.;Drozdov, Fedor V.;Buzin, Alexander I.;Cherkaev, Georgij V.;Kechekyan, Alexander S.;Dmitryakov, Petr V.;Belousov, Sergey I.;Kuznetsov, Alexander A. published 《New imide-based thermosets with propargyl ether groups for high temperature composite application》. The research results were published in《Polymer》 in 2022.Recommanded Product: 38103-06-9 The article conveys some information:
Development of new thermosetting polyimides with good processability is highly demanded. Oligomers with two imide cycles (bisimides), containing propargyl ether groups using 4-aminophenyl propargyl ether were prepared for the first time. Bisimides were synthesized without using of toxic solvents in benzoic or acetic acids. Use of acids as solvent allows to combine synthesis of bisimides with reaction of removing tert-butyloxycarbonyl group from amine in one step. Chem. structure of bisimides was confirmed using 1H, 13C NMR, FT-IR and elemental anal. Pre-polymers exhibited wide temperature processing window and good solubility in low b.p. organic solvents. Thermal curing was investigated using differential scanning calorimetry (DSC) and FT-IR anal. Propargyl ether groups crosslink completely after 1 h at 300°C. Thermogravimetric anal. (TGA) indicated that the temperatures of 10% weight loss of cured polymers in nitrogen and air atm. were in the ranges of 492-499°C and 503-515°C, resp. Samples of Carbon fiber reinforced plastics (CFRP) were prepared using bisimides with propargyl ether groups and investigated by dynamic mech. anal. (DMA) and SEM (SEM). CFRP demonstrated glass transition temperature in the range of 309-370°C and homogeneous structure of cross-section sample. Therefore, new highly thermally stable thermosets with great processability, prepared by eco-friendly synthesis for using as high performance polymer matrix for CFRP were developed in our work. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.
5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Recommanded Product: 38103-06-9 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.
Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem