Tetraglycidyl 4, 4-diaminodiphenylmethane TGDDM

Diaminodiphenyl sulfone (DDS) cured tetraglycidyl-4,4 -diaminodiphenylmethane (TGDDM) epoxies are the mpst common composite matrices utilized in high performance fibrous composites prepared from prepregs. The structures of the unreacted TGDDM epoxide and DDS monomers are illustrated in Fig. 3. The TGDDM epoxide monomer is a liquid at 23 °C, whereas the DDS monomer is a crystalline... 

Figure 12.5 shows an example of the cured structure of a thermoset resin using two different epoxide monomers with two different amine hardeners. The epoxies are triglycidyl p-aminophenol (TGAP) and tetraglycidyl 4,4-diaminodiphenylmethane (TGDDM), which are tri- and tetra-fiinctional, respectively (n = 3 and n = 4, respectively) and the two hardeners are 4,4-diamino-diphenylsulphone (DDS) and dicyandiamide (DICY). 

Materials. The diglycidyl ether of bisphenol F (DGEBF), and N,N,N ,N -tetraglycidyl-4,4 -diaminodiphenylmethane (TGDDM), were received from Ciba Geigy. 4,4-diaminodiphenylmethane (DDM), was obtained fi om Aldrich. 4,4 -diaminodiphenylsulphone (DDS), was provided from Sigma Chemical. All chemicals were used without further purification. The monomers are presented in Figure 1. 

Reaction mechanism and network build-up for curing of N,N-diglycidyl-aniline (DGAT and N,N,N N -tetraglycidyl-4,4 -diaminodiphenylmethane "(TGDDM) The main features of the reaction of N,N-diglycidylamine deriva-tives with amines are [10] ... 

Reyx, D. and Costes, B., Homopolymerisation of tetraglycidyl-4,4 diaminodiphenylmethane (TGDDM). Identification of cyclic reaction products. Polymer Commun., in press. 

Others include brominated bisphenol A resins which impart fire resistance, epoxy phenol novolac (EPN) resins, bisphenol F epoxy (DGEBF) resins, epoxy cresol novolac (ECN) resins, cycloaliphatic epoxy resins, and tetraglycidyl-4,4 -diaminodiphenylmethane (TGDDM). 

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