Composite foaming agent for urea-formaldehyde resin, preparing method and application thereof
A technology of composite foaming agent and urea-formaldehyde resin, which is applied in the direction of aldehyde/ketone condensation polymer adhesive, adhesive type, adhesive additive, etc. problems such as input, to achieve moderate surface tension, good uniformity and penetration balance, and improve the effect of fluidity
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[0030] Example 1 Preparation of composite blowing agent
[0031] 1. Weigh each component according to the following weight:
[0032] 500g foaming agent, 100g guar gum, 100g sodium dodecylbenzene sulfonate;
[0033] The foaming agent is obtained by mixing the following components by weight: 2 parts of dehydrated alum, 7 parts of sodium bicarbonate, 4 parts of calcium carbonate, 7 parts of ammonium sulfate;
[0034] 2. The above components are crushed to a particle size of 100-200 microns by mechanical crushing, and then mixed evenly to obtain.
Example Embodiment
[0035] Example 2 Preparation of composite blowing agent
[0036] 1. Weigh each component according to the following weight:
[0037] 450g foaming agent, 90g bone glue, 90g sodium dodecylbenzene sulfonate;
[0038] The foaming agent is obtained by mixing the following components by weight: 2 parts of dehydrated alum, 6 parts of sodium bicarbonate, 3 parts of calcium carbonate, and 5 parts of ammonium sulfate;
[0039] 2. The above-mentioned components are pulverized to a particle size of 100-200 microns by means of air jet pulverization, and then mixed evenly to obtain.
Example Embodiment
[0040] Example 3 Preparation of composite blowing agent
[0041] 1. Weigh each component according to the following weight:
[0042] 550g foaming agent, 110g polyacrylamide, 110g sodium lauryl sulfate;
[0043] The foaming agent is obtained by mixing the following components by weight: 3 parts of dehydrated alum, 9 parts of sodium bicarbonate, 5 parts of calcium carbonate, and 8 parts of ammonium sulfate;
[0044] 2. The above-mentioned components are pulverized by mechanical pulverization and then mixed uniformly to obtain.
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