One-part anti-aging epoxy resin composition for rtm molding
A technology of epoxy resin and hydantoin epoxy resin, which is applied in the field of one-part epoxy resin composition for RTM molding, can solve the problems of high reject rate and slowness of products, and achieve low viscosity, good manufacturability and stability excellent effect
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Embodiment 1
[0030] 1. The composition of the composition: as shown in Table 1; the viscosity of the composition was tested with an NDJ-8S rotational viscometer, and the viscosity at 25°C was 389mPa·s;
[0031] Table 1: Composition of the compositions
[0032]
[0033] 2. Preparation of RTM molding epoxy resin:
[0034] (1) The reaction exothermic curve of the composition was tested by differential scanning calorimetry, and the heating rate was measured at 5°C / min and 15°C / min, and the gel temperature was 67°C and the curing temperature was 90°C by extrapolation , the post-curing treatment temperature is 125°C;
[0035] (2) After stirring the composition evenly, place it in a vacuum drying oven to remove air bubbles; pour it into a closed mold, and cure it according to the following procedure: 67°C for 1 hour, 90°C for 2 hours, and 125°C for 2 hours, that is Get RTM molding epoxy resin.
[0036] 3. Performance testing of molded epoxy resin:
[0037] (1) Differential scanning calorim...
Embodiment 2
[0041] 1. Composition composition: as shown in Table 2; the viscosity of the composition was tested with an NDJ-8S rotational viscometer, and the viscosity at 25°C was 390mPa·s;
[0042] Table 2: Composition of the compositions
[0043]
[0044]
[0045] 2. Preparation of RTM molding epoxy resin:
[0046] (1) The reaction exothermic curve of the composition was tested by differential scanning calorimetry, and the heating rate was measured at 5°C / min and 15°C / min, and the gel temperature was 67°C and the curing temperature was 90°C by extrapolation , the post-curing treatment temperature is 125°C;
[0047] (2) After stirring the composition evenly, place it in a vacuum drying oven to remove air bubbles; pour it into a closed mold, and cure it according to the following procedure: 67°C for 1 hour, 90°C for 2 hours, and 125°C for 2 hours, that is Get RTM molding epoxy resin.
[0048] 3. Performance testing of molded epoxy resin:
[0049] (1) Differential scanning calori...
Embodiment 3
[0053] 1. Composition composition: as shown in Table 3; the viscosity of the composition was tested with an NDJ-8S rotational viscometer, and the viscosity at 25°C was 484mPa·s;
[0054] Table 3: Composition of the compositions
[0055]
[0056] 2. Preparation of RTM molding epoxy resin:
[0057] (1) The reaction exothermic curve of the composition was tested by differential scanning calorimetry, and the heating rate was measured at 5°C / min and 15°C / min, and the gel temperature was 65°C and the curing temperature was 89°C by extrapolation , the post-curing treatment temperature is 110°C;
[0058] (2) After stirring the composition evenly, place it in a vacuum drying oven to remove air bubbles; pour it into a closed mold, and cure it according to the following procedure: 65°C for 1 hour, 89°C for 2 hours, and 110°C for 2 hours, that is Get RTM molding epoxy resin.
[0059] 3. Performance testing of molded epoxy resin:
[0060] (1) Differential scanning calorimetry (DSC m...
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