High temperature resistant application of Hexachlorocyclotri
Time:2021-09-25 14:18 Source:zeshi
At present, almost no substance exists alone, but more in the form of multiple combinations. They have more applications when combined, and they are also good in our practical applications, such as the high and low temperature resistant application of Hexachlorocyclotriphosphazene.
Hexachlorocyclotriphosphazene and p-nitrophenol were used as raw materials to synthesize Hexachlorocyclotriphosphazene. Hexa - (4-NITROPHENOXY) cyclotriphosphazene was successfully reduced to hexa - (4-aminophenoxy) triphosphazene by Lucas reagent or sodium borohydride, and its structure was characterized by IR and 1H NMR. Hexa - (4-aminophenoxy) cyclotriphosphazene is a multi amino organic compound with inorganic core, which can be used to synthesize hyperbranched compounds or as curing agent of high temperature resistant epoxy resin.
Hexachlorocyclotriphosphazene in α- Poly (p-phenylphenol substituted phosphazene) was synthesized by ring opening polymerization in chloronaphthalene, which reacted with sodium p-phenylphenol. The IR and HNMR spectra of the polymer were determined. GPC estimated that the number average relative molecular weight was 6 × 104。 Twist braid analysis showed that the glass transition temperature and viscous flow temperature of the polymer were 0 ℃ and 130 ℃ respectively, and the vulcanization temperature was 210 ℃.
a new cyclotriphosphazene multifunctional alicyclic epoxy compound (pcnep) was synthesized from dicyclopentadiene, ethylene glycol and Hexachlorocyclotriphosphazene. The chemical structures of pcnep and its intermediates were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance, mass spectrometry and determination of epoxy value. The synthesized alicyclic epoxy resin was cured with Methyltetrahydrophthalic anhydride, and the thermal properties of pcnep cured product were compared with commercial alicyclic epoxy resin erl-4221 by thermogravimetric analysis. The results showed that the initial thermal decomposition temperature of pcnep cured product was lower than that of erl-4221 cured product, but the carbon residue of pcnep cured product was 28.87% and 24.73% at 500 ℃ and 700 ℃ respectively.
Hexachlorocyclotriphosphazene and p-nitrophenol were used as raw materials to synthesize Hexachlorocyclotriphosphazene. Hexa - (4-NITROPHENOXY) cyclotriphosphazene was successfully reduced to hexa - (4-aminophenoxy) triphosphazene by Lucas reagent or sodium borohydride, and its structure was characterized by IR and 1H NMR. Hexa - (4-aminophenoxy) cyclotriphosphazene is a multi amino organic compound with inorganic core, which can be used to synthesize hyperbranched compounds or as curing agent of high temperature resistant epoxy resin.
Hexachlorocyclotriphosphazene in α- Poly (p-phenylphenol substituted phosphazene) was synthesized by ring opening polymerization in chloronaphthalene, which reacted with sodium p-phenylphenol. The IR and HNMR spectra of the polymer were determined. GPC estimated that the number average relative molecular weight was 6 × 104。 Twist braid analysis showed that the glass transition temperature and viscous flow temperature of the polymer were 0 ℃ and 130 ℃ respectively, and the vulcanization temperature was 210 ℃.
a new cyclotriphosphazene multifunctional alicyclic epoxy compound (pcnep) was synthesized from dicyclopentadiene, ethylene glycol and Hexachlorocyclotriphosphazene. The chemical structures of pcnep and its intermediates were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance, mass spectrometry and determination of epoxy value. The synthesized alicyclic epoxy resin was cured with Methyltetrahydrophthalic anhydride, and the thermal properties of pcnep cured product were compared with commercial alicyclic epoxy resin erl-4221 by thermogravimetric analysis. The results showed that the initial thermal decomposition temperature of pcnep cured product was lower than that of erl-4221 cured product, but the carbon residue of pcnep cured product was 28.87% and 24.73% at 500 ℃ and 700 ℃ respectively.
