Heat-resistance energy-saving environment-protection epoxy solvent-free paint and production method thereof
An energy-saving, environmentally friendly, solvent-free paint technology, applied in the direction of epoxy resin coatings, coatings, etc., can solve environmental pollution, affect the health of users and other problems, achieve the effect of reducing volume, reducing weight, and saving materials
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preparation Embodiment 1
[0021] Take 900kg of raw material E-44 epoxy resin and 100kg of bismaleimide, heat the raw material E-44 epoxy resin to 135±5℃, slowly add bismaleimide, keep it warm for 2.5h, and the material to be sampled Clear, remove from heat, and cool.
[0022] Take 661.8kg of tung oil, 147.2kg of maleic anhydride, and 190kg of bismaleimide. First, heat the tung oil to 100±5°C to remove water, keep it at this temperature for 1 hour, and then lower the temperature to 80°C after removing water. Add maleic anhydride, then raise the temperature to 140°C, keep it warm for 0.5h, slowly add bismaleimide at this temperature, after adding bismaleimide, increase the temperature at 5°C / min to 200±2 ℃, keep warm for 1h, and after 2-3min by the conventional knife method, cool down and discharge the material, the material is transparent after cooling.
[0023] Take 400kg of heat-resistant polyester as raw material, 100kg of modified epoxy resin, 100kg of tungalin anhydride, 300kg of vinyltoluene, 15k...
preparation Embodiment 2
[0025] The difference between this embodiment and Example 1 is that the raw material E-44 epoxy resin is changed into CYD-128 epoxy resin, and the weight ratio of CYD-128 epoxy resin and bismaleimide is according to 10:1 Preparation, namely CYD-128 epoxy resin 1000kg, bismaleimide 100kg, all the other are with embodiment 1.
preparation Embodiment 3
[0027] The difference between this embodiment and Example 1 is that the add-on of heat-resistant polyester is 500kg, the add-on of modified epoxy resin is 80kg, and all the other are the same as Example 1.
[0028] 4) Finished product inspection
[0029] Appearance: Orange-yellow transparent liquid
[0030] Particle size: large 4 viscosity cups, 20±2°C, 20-40 seconds
[0031] Curing time: 140°C±2°C <60min
[0032] Electric strength: normal >22kv / mm
[0033] 180℃±2℃ >16kv / mm
[0034] Soak in water for 24h >20kv / mm
[0035] Volume resistivity: normal >1×10 12 (Ω·m)
[0036] Soak in water for 24h >1×10 10 (Ω·m)
[0037] 180℃±2℃>1×10 8 (Ω·m)
[0038] Adhesive force: normal > 100N,
[0039] Temperature index > 180.
[0040] The heat-resistant, energy-saving and environment-friendly epoxy solvent-free paint prepared by the present invention is H-grade heat-resistant grade, that is, the working temperature is increased from 130°C to 155°C to 180°C, and the curing temperat...
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