Modified epoxy resin adhesive and its preparation process
A technology of epoxy resin and modified resin, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of environmental pollution, inability to meet the curing time and long curing time of packaging materials, etc.
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[0052] Example 1
[0053] The molecular structure of reactant 4-(4-aminobenzyl)aniline is as follows:
[0054]
[0055] reaction process:
[0056] Add 29.7 g (0.15 mol) of the reactants ambenzyl aniline and 17.6 g (0.1 mol) of 1-chlorodecane into a glass reactor, add 80 ml of 15% NaOH alkaline solution, and stir at 1500 rpm. The reaction temperature was 90°C, and after rising to the reaction temperature, the reaction was carried out for 3 hours. After the reaction is over, it is extracted with cyclohexane, and the solvent is removed by rotary distillation to obtain the product as a colorless or light yellow transparent liquid. Viscosity 320mp, curing conditions: curing at a temperature above 60°C, no effect at low temperatures.
Example Embodiment
[0057] Example 2
[0058] The structural formula of the reactant 4-(2-aminoethyl)-1-methylcyclohexylamine is as follows:
[0059]
[0060] reaction process:
[0061] The reactants 4-(2-aminoethyl)-1-methylcyclohexylamine 46.9g (0.3mol) and 12.1g (0.1mol) were added to the glass reactor, and 15% Na was added 2 CO 3 Of 100ml, stir quickly. The reaction temperature was 120°C, and the reaction was conducted for 6 hours. After the reaction, it was extracted with n-hexane, and after three times, the solvent was removed by rotating distillation to obtain a light yellow transparent viscous liquid. The viscosity is 280mp. Low temperature has no effect, and the temperature is increased to 45°C for curing.
[0062] II Surface active treatment of filler
Example Embodiment
[0063] Example 3 Surface Treatment of Silicon Micropowder
[0064] In 50ml of organosiloxane solution, add 4.5% molten silicon powder in methanol (the maximum diameter of silicon powder should be less than 10μm), stir vigorously at 5000rpm to promote the full dispersion of silicon powder in the system, and then heat to reflux, stirring at medium speed , The reaction time is 1h, continue to heat up and distill out methanol. Control the temperature within 80-100°C, and react for 20h within this temperature range. After the surface treatment is completed, the excess siloxane is distilled off under reduced pressure. The system was cooled to room temperature. After separation and drying, it is repeatedly washed and filtered with distilled water or deionized water, dehydrated with absolute ethanol, vacuum dried and ground into fine powder to obtain 2.6 g of surface-treated molten silicon fine powder filler.
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