High-strength high-toughness flame-retardant epoxy resin and preparation method thereof
A technology of epoxy resin and liquid epoxy resin, which is applied in the field of high-strength, high-toughness flame-retardant epoxy resin and its preparation, can solve the problem of increased viscosity of epoxy resin system, adverse effects of composite gel curing, and reduced resin process performance and other issues, to achieve the effects of high flame retardant efficiency, improved processing performance, and increased glass transition temperature
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Embodiment 1
[0030] A kind of high-strength and high-toughness flame-retardant epoxy resin formulation disclosed by the present embodiment is as follows (by mass parts statistics):
[0031]
[0032] figure 1 To prepare the flow chart, the specific preparation steps are as follows:
[0033] In the first step, 5 parts of thermoplastics are weighed and added to 100 parts of liquid bisphenol A epoxy resin. After stirring evenly at room temperature, the temperature is raised and the stirring is continued until the powder is completely dissolved to obtain a toughening agent;
[0034] In the second step, take 20 parts of bisphenol A liquid epoxy resin E-51, 10 parts of cyanate resin, 12 parts of intumescent flame retardant, 5 parts of curing agent, and 3 parts of accelerator and mix them uniformly at room temperature. Go through the three-roll mill twice to obtain the mixture;
[0035] The third step is to weigh 30 parts of solid epoxy resin E-20, heat up to 120 °C to melt, weigh 12 parts of...
Embodiment 2
[0040] A kind of high-strength and high-toughness flame-retardant epoxy resin formulation disclosed by the present embodiment is as follows (by mass parts statistics):
[0041]
[0042] The preparation steps are as follows:
[0043] In the first step, 15 parts of thermoplastics are weighed and added to 100 parts of liquid bisphenol A epoxy resin. After stirring at room temperature, the temperature is raised and the stirring is continued until the powder is completely dissolved to obtain a toughening agent;
[0044] In the second step, take 25 parts of bisphenol A liquid epoxy resin E-52, 15 parts of cyanate resin, 30 parts of intumescent flame retardant, 8 parts of curing agent, and 2 parts of accelerator and mix them uniformly at room temperature. Go through the three-roll mill twice to obtain the mixture;
[0045] The third step is to weigh 40 parts of solid epoxy resin E-14, heat up to 130°C to melt, weigh 7 parts of toughening agent, heat up to 70°C, add to the mixture...
Embodiment 3
[0050] A kind of high-strength and high-toughness flame-retardant epoxy resin formulation disclosed by the present embodiment is as follows (by mass parts statistics):
[0051]
[0052] The preparation steps are as follows:
[0053] In the first step, 25 parts of thermoplastics are weighed and added to 100 parts of liquid bisphenol A epoxy resin. After stirring at room temperature, the temperature is raised and the stirring is continued until the powder is completely dissolved to obtain a toughening agent;
[0054] In the second step, take 15 parts of bisphenol A liquid epoxy resin E-54, 7 parts of cyanate resin, 10 parts of intumescent flame retardant, 3 parts of curing agent, and 1 part of accelerator and mix them uniformly at room temperature. Go through the three-roll mill twice to obtain the mixture;
[0055] The third step is to weigh 20 parts of solid epoxy resin JF-45, heat up to 100°C to melt, weigh 15 parts of toughening agent, heat up to 70°C, add to the mixture, ...
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