Preparation method of semi-solid bamboo liquid-protein hot pressboard glue
A semi-solid, hot-pressing board technology, used in the field of wood board adhesives, can solve problems such as unevenness, gaps and holes, and achieve the effects of good water resistance, good bonding strength, good environmental benefits and economic benefits
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Embodiment 1
[0020] 1) In terms of parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were placed in a reaction kettle, dissolved, heated to 100°C while stirring, and reacted for 60 minutes to obtain red water-soluble sulfonated phenol.
[0021] 2) Crush the clean bamboo with water content of 25% to 30% to about 80 meshes, take 200 parts, add it to the sulfonated phenol in 1), and add 5 parts of a mixture of polyethylene glycol and glycerol as a catalyst, 30 parts water, heated up to 120°C, stirred for 90 minutes, and cooled to obtain a brown-red viscous liquid containing 30% to 35% solids. Polyethylene glycol and glycerol mixture mass ratio is 7:3;
[0022] 3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 90°C for 120 minutes under temperature control, and cool down to obtain a product with a total solid content of 50% to 55%. Viscous brown-red viscous liquid conta...
Embodiment 2
[0025] 1) According to the parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were put into a reaction kettle, dissolved, heated to 110°C while stirring, and reacted for 70 minutes to obtain red water-soluble sulfonated phenol.
[0026] 2) Crush the clean bamboo with water content of 25% to 30% to about 80 meshes, take 220 parts, add it to the sulfonated phenol in 1), add 8 parts of polyethylene glycol and glycerol mixture as catalyst, 40 parts water, heated up to 125° C., stirred for 100 minutes, cooled down to obtain a brown-red viscous liquid containing 30% to 35% solids. The mass ratio of polyethylene glycol to glycerol mixture is 6:3.
[0027] 3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 100°C for 130 minutes under temperature control, and cool down to obtain a total solid content of 50% to 55%. Viscous brown-red viscous liquid containing solid...
Embodiment 3
[0030] 1) According to the parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were put into a reaction kettle, dissolved, heated to 120°C while stirring, and reacted for 90 minutes to obtain red water-soluble sulfonated phenol.
[0031] 2) Crush clean bamboo with water content of 25% to 30% to about 80 meshes, take 250 parts, add it to sulfonated phenol in 1), and add 10 parts of a mixture of polyethylene glycol and glycerol as a catalyst, 50 parts water, heated up to 130°C, stirred and reacted for 120 minutes, cooled down to obtain a brown-red viscous liquid containing 30% to 35% solids. The mass ratio of polyethylene glycol to glycerol mixture is 4:3.
[0032]3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 110°C for 150 minutes under temperature control, and cool down to obtain a total solid content of 50% to 55%. Viscous brown-red viscous liquid con...
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