Process for in-situ polymerization preparation of nylon 6/epoxy resin/silicon dioxide nano composite materials
A technology of nanocomposite materials and epoxy resin, which is applied in the field of in-situ polymerization preparation of nanocomposite materials, can solve problems such as the decrease of tensile strength, achieve the effects of increasing tensile strength, improving interface interaction, and avoiding agglomeration
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Embodiment 1
[0022] The first step: preparation of epoxy resin siloxane hydrolyzate
[0023] Heat the bisphenol A type epoxy resin (EP) to extract water and small molecules according to the formula, mix it with a certain amount of ethyl orthosilicate, add 0.5wt.% tetrabutyl titanate, under nitrogen protection, in React at 110°C to 130°C for 3 hours, then lower the temperature to 55°C, add a certain amount of THF, distilled water and catalyst 1M HCl (the molar ratio of TEOS, THF, water, and HCl is 1:1 5:4:0.002), and stir for about 6h, a clear and transparent solution was obtained.
[0024] The second step: before or during the caprolactam ring-opening reaction, add epoxy resin siloxane hydrolyzate, water and antioxidant
[0025] Add the epoxy resin silane hydrolyzate prepared in the previous step into 2.0Kg of molten caprolactam, mix well, raise the temperature to 120°C, and remove the solvent and ethanol produced by hydrolysis. Then add 50g distilled water, 1ml concentrated H 3 PO 4 ,...
Embodiment 2
[0029] The first step: preparation of epoxy resin siloxane hydrolyzate
[0030] Heat the bisphenol A type epoxy resin (EP) to extract water and small molecules according to the formula, mix it with a certain amount of ethyl orthosilicate, add 0.5wt.% tetrabutyl titanate, under nitrogen protection, in React at 110°C to 130°C for 3 hours, then lower the temperature to 55°C, add a certain amount of THF, distilled water and catalyst 1M HCl (the molar ratio of TEOS, THF, water, and HCl is 1:75:4:0.002), and stir for about 6 hours , a clear and transparent solution was obtained.
[0031] The second step: before or during the caprolactam ring-opening reaction, add epoxy resin siloxane hydrolyzate, water and antioxidant
[0032] Add the epoxy resin silane hydrolyzate prepared in the previous step into 2.0Kg of molten caprolactam, mix well, raise the temperature to 120°C, and remove the solvent and ethanol produced by hydrolysis. Then add 50g distilled water, 1ml concentrated H 3 PO...
Embodiment 3
[0036] The first step: preparation of epoxy resin siloxane hydrolyzate
[0037] According to the formula, bisphenol A type epoxy resin (EP) was heated to extract water and small molecules, mixed with a certain amount of ethyl orthosilicate, added 1.5wt.% tetrabutyl titanate, under nitrogen protection, in React at 110°C to 130°C for 3 hours, then lower the temperature to 55°C, add a certain amount of THF, distilled water and catalyst 1M HCl (the molar ratio of TEOS, THF, water, and HCl is 1:5:4:0.002), and stir for about 6 hours , a clear and transparent solution was obtained.
[0038] The second step: before or during the caprolactam ring-opening reaction, add epoxy resin siloxane hydrolyzate, water and antioxidant
[0039] Add the epoxy resin silane hydrolyzate prepared in the previous step into 2.0Kg of molten caprolactam, mix well, raise the temperature to 120°C, and remove the solvent and ethanol produced by hydrolysis. Then add 50g distilled water, 1ml concentrated H 3...
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