Preparation method of composite adhesive for antioxidant pipes
A technology for compounding adhesives and plastic pipes, applied in the direction of adhesives, epoxy resin adhesives, adhesive types, etc., can solve the problem of layering, co-extrusion surface bonding strength of single-layer pipe and barrier layer coating is low, etc. problems, to achieve the effect of improving wettability and adhesion, high bond energy, and improving viscosity
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example 1
[0033] In parts by weight, weigh 5 parts of anhydrous calcium chloride, 60 parts of N-picoline, 10 parts of p-phenylenediamine, and 30 parts of terephthaloyl chloride, and add anhydrous calcium chloride to In N-methylpyridinone, stir at 100r / min in a water bath at 25°C for 25min to obtain an N-methylpyridinone solution, and add p-phenylenediamine to the N-methylpyridinone solution to obtain Inject nitrogen gas at an airflow rate of 20mL / min to remove oxygen, stir at 400r / min at room temperature for 25min, then place in ice water at 0°C for 3min to obtain a mixed solution, add terephthaloyl chloride to the mixed solution, Stir at room temperature at 400r / min for 5 minutes to obtain a gel. Incubate the gel at 140°C for 4 hours, beat the pulp, wash with water at room temperature for 5 minutes, and then boil it in 80°C hot water for 20 minutes. Dry for 3 hours to obtain aramid pulp, and then weigh 5 parts of trishydroxymethylaminomethane, 10 parts of dopamine hydrochloride, 40 par...
example 2
[0035] In parts by weight, weigh 10 parts of anhydrous calcium chloride, 80 parts of N-picoline, 20 parts of p-phenylenediamine, and 40 parts of terephthaloyl chloride, and add anhydrous calcium chloride to In N-methylpyridinone, stir at 100r / min in a water bath at 30°C for 30min to obtain an N-methylpyridinone solution, and add p-phenylenediamine to the N-methylpyridinone solution to obtain Inject nitrogen gas at an airflow rate of 30mL / min to remove oxygen, stir at room temperature at 500r / min for 30min, then place in ice water at 0°C for 5min to obtain a mixed solution, add terephthaloyl chloride to the mixed solution, Stir at room temperature at 500r / min for 10 minutes to obtain a gel. Incubate the gel at 150°C for 5 hours, beat the pulp, wash with water at room temperature for 10 minutes, and then boil it in hot water at 85°C for 30 minutes. Dry for 5 hours to get aramid pulp, and weigh 10 parts of tris-tris, 20 parts of dopamine hydrochloride, 60 parts of aramid pulp, an...
example 3
[0037] In parts by weight, weigh 7 parts of anhydrous calcium chloride, 70 parts of N-picoline, 15 parts of p-phenylenediamine, and 35 parts of terephthaloyl chloride, and add anhydrous calcium chloride to In N-methylpyridinone, stir at 100r / min in a water bath at 27°C for 27min to obtain an N-methylpyridinone solution, and add p-phenylenediamine to the N-methylpyridinone solution to obtain Inject nitrogen gas at an airflow rate of 25mL / min to remove oxygen, stir at room temperature at 450r / min for 27min, then place in ice water at 0°C for 4min to obtain a mixed solution, and add terephthaloyl chloride to the mixed solution, Stir at 450r / min at room temperature for 7 minutes to obtain a gel, incubate the gel at 145°C for 5 hours, make a pulp, wash with water at room temperature for 7 minutes, then boil in hot water at 87°C for 20 minutes, and then heat the gel at 120°C Dry for 5 hours to get aramid pulp, and then weigh 5 parts of tris-tris, 20 parts of dopamine hydrochloride, ...
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