Original Paper
Properties of the Cured Polymer from an Epoxy Resin Having an TrisPhenyl Propane Structure and Phenol Novolac
2021 Volume 57 Issue 7 Pages 272-279
Details
2021 Volume 57 Issue 7 Pages 272-279
1,1,2-Tris（4-glycidyloxy phenyl）propane; TGPP） was synthesized by a reaction of phenol and chloroacetone
followed by epoxidation. As a result of evaluating the physical properties of the cured product from TGPP
and phenol novolac, the glass transition temperature was 199℃ , which was 18℃ higher than that of PN-E.
The elastic modulus in the rubber state（ Tg+50℃） of the TGPP cured product was 4.7 × 107 Pa, which was
less than 1/2 that of the triphenylmethane type epoxy resin（ TPM-E）. Furthermore, the fracture toughness
was 0.72 MPa · m1 / 2, 1.6 times that of TPM-E. These results were considered to depend on the higher mobility
of the molecule chain due to the insertion of the methylene linkage.
