Who has the glue formula for laying the carpet?
The most commonly used is the 801 glue, and the 801 building glue formula:Ingredients: polyvinyl alcohol, water, formaldehyde, urea, appropriate amount of hydrochloric acid, sodium hydroxide and neutralization amount.
Production process:The water is added to the reaction pot, the temperature is raised to 70 DEG C, and then slowly added to the polyvinyl alcohol, and the temperature is increased to 90~95 DEG C, so that the PVA is completely dissolved.Cooling the polyvinyl alcohol solution to 80~85 DEG C, dropping hydrochloric acid, stirring for 20 minutes, adding formaldehyde for condensation, takes about 60 minutes.After cooling and adjusting the pH value, adding urea for amino treatment, after sampling and passing the test, the pH was transferred to neutral, and the temperature was reduced to 40~50 DEG C and the material was discharged.
Production process:The water is added to the reaction pot, the temperature is raised to 70 DEG C, and then slowly added to the polyvinyl alcohol, and the temperature is increased to 90~95 DEG C, so that the PVA is completely dissolved.Cooling the polyvinyl alcohol solution to 80~85 DEG C, dropping hydrochloric acid, stirring for 20 minutes, adding formaldehyde for condensation, takes about 60 minutes.
