Modified thermoset type quick solidified phenol-formaldehyde resin
A technology of phenolic resin and phenolic resin solution, which is applied in the field of modified thermosetting fast-curing phenolic resin, can solve the problems of fishing rod production efficiency and cost reduction, large mold investment, and long production cycle, so as to reduce mold input , Improve production efficiency and save energy consumption
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Embodiment 1
[0016] Mix 930 kg of A-stage resin and 70 kg of curing agent urotropine and stir at room temperature for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.
[0017] However, the present invention can only have a reasonable storage period for the obtained modified thermosetting fast-curing phenolic resin and its glass fiber prepreg cloth only when the addition amount of suitable curing agent urotropine is controlled. At the same time, it can not only shorten the baking and shaping time of th...
Embodiment 2
[0019] Mix 909 kg of A-stage resin and 91 kg of curing agent urotropine at room temperature and stir for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.
Embodiment 3
[0021] Mix 995 kg of A-stage resin and 5 kg of urotropine as a curing agent and stir at room temperature for 20 to 30 minutes to obtain a modified thermosetting fast-curing phenolic resin. Urotropine is also known as hexamethylenetetramine or hexa(methylene)tetramine, H-promoter, Hexa. The A-stage resin in this embodiment is the A-stage phenolic resin solution (solid content: 45% ~ ~ 75%) in the background technology, which is a thermosetting type A-stage phenolic resin formed by the condensation of phenol and formaldehyde catalyzed by alkali (ammonia water). Resin, the solvent is methanol, ethanol or acetone, or its compound solvent combination.
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