Preparation method for outdoor phenolic resin glue used for bamboo laminated wood
A technology of phenolic resin glue and laminated wood, which is applied in the directions of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc. The problem of large cross-linking degree of glue molecules, etc., can enhance the permeability of glue, prevent moisture absorption and expansion, and improve the curing speed.
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[0038] Example 1
[0039] A preparation method of outdoor phenolic resin glue for bamboo-wood laminated timber, including the following steps:
[0040] (1) Prepare 1000 parts of phenol, 1500 parts of formaldehyde, 75 parts of sodium hydroxide, 40 parts of diethylene glycol, 10 parts of epichlorohydrin, 0.5 parts of iron dioxide, 4 parts of melamine, and 400 parts of water according to parts by mass.
[0041] (2) Mix 75 parts of sodium hydroxide and water at a mass ratio of 1:2 to prepare lye, and place it in a storage tank for later use. The lye is used as a catalyst in rubber preparation, and it is best to prepare it one day before rubber preparation.
[0042] (3) Stir and mix 1000 parts of phenol, 1500 parts of formaldehyde, 40 parts of diethylene glycol, 10 parts of epichlorohydrin, 0.5 parts of iron dioxide, and the remaining water in the reactor before use.
[0043] Add 18% lye to the obtained mixture, that is, add about one-fifth of the above lye. Due to the exothermic reaction, ...
Example Embodiment
[0054] Example 2
[0055] A preparation method of outdoor phenolic resin glue for bamboo-wood laminated timber, including the following steps:
[0056] (1) Prepare 1000 parts of phenol, 1600 parts of formaldehyde, 82.5 parts of sodium hydroxide, 45 parts of diethylene glycol, 15 parts of epichlorohydrin, 0.8 parts of iron dioxide, 5 parts of melamine and 400 parts of water according to parts by mass.
[0057] (2) Mix 82.5 parts of sodium hydroxide and water at a mass ratio of 1:3 to prepare lye, and place it in a storage tank for later use. The lye is used as a catalyst in rubber preparation, and it is best to prepare it one day before rubber preparation.
[0058] (3) 1000 parts of phenol, 1600 parts of formaldehyde, 45 parts of diethylene glycol, 15 parts of epichlorohydrin, 0.8 parts of iron dioxide and the remaining water are stirred and mixed in the reactor for use.
[0059] Add 20% lye to the obtained mixture, that is, add one-fifth of the above lye. Due to the exothermic reaction...
Example Embodiment
[0069] Example 3
[0070] A preparation method of outdoor phenolic resin glue for bamboo-wood laminated timber, including the following steps:
[0071] (1) Prepare 1000 parts of phenol, 1700 parts of formaldehyde, 90 parts of sodium hydroxide, 50 parts of diethylene glycol, 20 parts of epichlorohydrin, 1 part of iron dioxide, 5 parts of melamine, and 400 parts of water according to parts by mass.
[0072] (2) Mix 90 parts of sodium hydroxide and water at a mass ratio of 1:4 to prepare lye, and place it in a storage tank for later use. The lye is used as a catalyst in rubber preparation, and it is best to prepare it one day before rubber preparation.
[0073] (3) Stir and mix 1000 parts of phenol, 1700 parts of formaldehyde, 50 parts of diethylene glycol, 20 parts of epichlorohydrin, 1 part of iron dioxide, and the remaining water in the reactor before use.
[0074] 22% lye is added to the obtained mixture, that is, about one-fifth of the above lye is added. Due to the exothermic reacti...
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