Silicon-based wood adhesive with interpenetrating polymer network structure and preparation method thereof
A wood adhesive and interpenetrating polymer technology, applied in the field of interpenetrating polymer network structure silicon-based wood adhesive and its preparation, can solve the problem of environmental pollution by aldehydes toxic compounds, low bonding strength, poor water resistance, etc. problem, to achieve the effect of low price, high bonding strength and low cost
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Embodiment 1
[0028] Add 30 parts of PVA solution with a mass fraction of 10%, 0.2 parts of alkylphenol polyoxyethylene ether, and 6.7 parts of deionized water into the reaction flask in sequence, and after stirring at 60°C for 60 minutes, add 53.3 parts of water glass and fully stir Mix; then dissolve 2 parts of citric acid and 2 parts of benzoic acid in 20 parts of deionized water to form a mixed solution, and slowly drop them into the reaction flask through the dropping funnel at a reaction temperature of 85°C. After the addition is completed, Continue the heat preservation reaction for 60 minutes; then, add 26.7 parts of water glass and 13.3 parts of deionized water into the reaction bottle, stir evenly, and perform an aging reaction for 10 hours; after the aging is completed, add 2.5 parts of water-based titanate crosslinking agent into the reaction bottle , stir rapidly and disperse for 30 minutes, cool down, and discharge, that is, a silicon-based wood adhesive with an interpenetratin...
Embodiment 2
[0030] Add 25 parts of PVA solution with a mass fraction of 10%, 0.15 parts of fatty alcohol polyoxyethylene ether, and 5 parts of deionized water into the reaction bottle in sequence, and after stirring at 65°C for 40 minutes, add 50 parts of water glass and fully stir and mix. ; Then dissolve 1.5 parts of dimethylolpropionic acid and 1.5 parts of phenol in 15 parts of deionized water to form a mixed solution, and slowly drop them into the reaction flask through the dropping funnel at a reaction temperature of 80°C, and the addition is completed After that, continue the heat preservation reaction for 40 minutes; then, add 25 parts of water glass and 10 parts of deionized water into the reaction bottle, stir evenly, and perform the aging reaction for 7 hours; after the aging is completed, add 1.8 parts of aqueous titanate crosslinking agent to the reaction bottle In the bottle, quickly stir and disperse for 25 minutes, cool down, and discharge, and then a silicon-based wood adh...
Embodiment 3
[0032] Add 20 parts of PVA solution with a mass fraction of 10%, 0.1 part of alkanolamide polyoxyethylene ether, and 3.3 parts of deionized water into the reaction flask in sequence, and after stirring at 70°C for 30 minutes, add 46.7 parts of water glass to fully Stir and mix; then dissolve 1 part of citric acid and 1 part of oxalic acid in 10 parts of deionized water to form a mixed solution, and slowly drop them into the reaction flask through the dropping funnel at a reaction temperature of 75°C. After the addition is completed, Continue the heat preservation reaction for 30 minutes; then, add 23.3 parts of water glass and 6.7 parts of deionized water into the reaction flask, stir evenly, and perform the aging reaction for 4 hours; after the aging is completed, add 0.5 parts of water-based titanate crosslinking agent into the reaction flask , stir rapidly and disperse for 20 minutes, cool down and discharge, and then a silicon-based wood adhesive with an interpenetrating po...
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Abstract
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