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Table 3 Parameters related to epoxy curing obtained by DSC and crosslink density of the samples obtained by DMA

From: Paving the way for a wider use of composites in railway industry

Sample MAPP/mass% Uncured reactive mixture Cured sample v aXL ·103/mol cm−3
ΔHc/J g−1 Tonset/°C Tpeak/°C Tg∞/°C
EP_REF 434.19 144 154 161 2.58
EP_20AP 15.0 379.02 141 152 163 3.75
EP_40AP 25.5 309.29 142 158 151 4.15
EP_0.5PMP 379.21 148 169 136 1.68
EP_1.0PMP 355.04 152 175 126 1.34
EP_34DP 386.27 152 165 141 1.85
EP_64DP 365.70 151 167 131 1.08
EP_34DP_0.5PMP 316.54 139 178 120 0.77
EP_34DP_1.0PMP 299.43 145 175 115 ndb
EP_34DP_40AP 20.7 310.67 108 176 128 2.29
EP_0.5PMP_40AP 25.5 262.02 152 176 133 2.64
EP_1.0PMP_40AP 25.5 242.25 147 176 130 ndb
  1. avXL: crosslink density calculated by DMA according to the theory of rubber elasticity
  2. bnd not determined