Halogen-free flame-retardant heat-resistant water-soluble epoxy resin, composition, preparation method and application thereof
An epoxy resin, water-soluble technology, applied in the synthesis and application of epoxy resin, can solve the problems that the comprehensive performance cannot meet the copper clad laminate, low cross-linking density, low mechanical strength, etc., and achieves good environmental performance and heat resistance. High and good water solubility
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Embodiment 3
[0041] A halogen-free flame-retardant and hot-water-resistant epoxy resin, the chemical structural formula of the halogen-free flame-retardant and hot-water-resistant epoxy resin is:
[0042]
[0043] The halogen-free flame retardant and heat-resistant water-soluble epoxy resin is composed of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin and 9,10-dihydro-9-oxa-10-phosphaphenanthrene- 10-oxide (referred to as DOPO) is heated under the action of 2-ethyl-4-methylimidazole to generate phosphorus-containing epoxy resin, then reacted with diethanolamine, added lactic acid, and finally added (appropriate amount) water and stirred evenly. get. The halogen-free flame-retardant and heat-resistant water-soluble epoxy resin is light yellow liquid, and when the solid content is 75% by mass, the viscosity at normal temperature is 800-1200mpas.
Embodiment 4
[0045] The preparation method of the halogen-free flame-retardant and heat-resistant water-soluble epoxy resin is: add 60 parts by mass of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin liquid into the reactor, and raise the temperature to 140°C , add 20 mass parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO for short), stir to make 9,10-dihydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide (DOPO for short) is dissolved in the liquid of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin, and then 0.02 parts by mass of 2-ethyl-4-methylimidazole is added, Raise the temperature to 150°C and react for 4 hours, then cool down to 80°C, add 5 parts by mass of diethanolamine, stir and react for 4 hours, then cool down to 60°C, add 4 parts by mass of lactic acid, and finally add an appropriate amount of water, stir evenly, and make a solid A halogen-free flame-retardant and heat-resistant water-soluble epoxy resin with a mass percentage of 75% (pale yellow l...
Embodiment 5
[0047] The preparation method of the halogen-free flame-retardant and heat-resistant water-soluble epoxy resin is as follows: 70 parts by mass of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin liquid is added to the reactor, and the temperature is raised to 140°C , add 25 mass parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO for short), stir to make 9,10-dihydro-9-oxa-10-phosphorus Heterophenanthrene-10-oxide (DOPO for short) is dissolved in the liquid of 4,4'-diaminodiphenylmethane tetraglycidyl epoxy resin, and then 0.1 parts by mass of 2-ethyl-4-methylimidazole is added, Raise the temperature to 180°C for 1 hour, then lower the temperature to 120°C, add 10 parts by mass of diethanolamine, stir and react for 2 hours, then cool down to 60°C, add 8 parts by mass of lactic acid, and finally add an appropriate amount of water, stir evenly, and make a solid The mass percent content is 75% (pale yellow liquid) halogen-free flame-retardant heat-resistant wat...
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