A kind of preparation method of bamboo liquid-collagen polypeptide composite adhesive
A composite adhesive and collagen polypeptide technology, applied in the field of wood adhesives, can solve the problems of weak intermolecular binding force of proteins, increased production cost of enhancers, low mechanical properties, etc. Low dosage effect
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Embodiment 1
[0037]1) Preparation of bamboo liquid: 100 parts by weight of bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years old are washed with 100 parts by weight of hydrogen peroxide for 30 minutes at pH 3, 1% by mass, then dried and pulverized to 30 meshes to obtain bamboo powder; weigh the following components in parts by weight: 100 parts of bamboo powder, 5 parts of NaOH, and 200 parts of water, put them into an autoclave, carry out a degradation reaction for 90 minutes at 140°C and 0.35MPa, and cool down , to obtain bamboo liquid;
[0038] 2) Preparation of mixed degradation solution: shaving, trimming and drying the chrome-tanned wet-blue leather discarded by the tannery until the length is 2 mm to obtain leather shavings; take 150 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 110°C and 0.15MPa, carry out the secondary degradation reaction for 120min, cool down, and...
Embodiment 2
[0042] 1) Bamboo liquid preparation: 100 parts by weight of discarded bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years of bamboo age are washed with 3% and 80 parts by weight hydrogen peroxide for 30 minutes at a pH of 4, and then dried. Grinding to 50 meshes to obtain bamboo powder; weigh the following components in parts by weight: 100 parts of bamboo powder, 10 parts of NaOH, and 250 parts of water, put them into an autoclave, and carry out a degradation reaction for 90 minutes at 150°C and 0.5MPa. Cool down to obtain bamboo liquid;
[0043] 2) Preparation of mixed degradation solution: shaving, trimming, and drying the chrome-tanned wet-blue leather discarded by the tannery, and crushing to a length of 4 mm to obtain leather shavings; take 250 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 120°C and 0.2MPa, carry out the secondary degradation reaction for 60...
Embodiment 3
[0047] 1) Bamboo liquid preparation: 100 parts by weight of bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years old are washed with 120 parts by weight of hydrogen peroxide for 30 minutes at a pH of 3, with a mass fraction of 2%, then dried and pulverized To 40 mesh, obtain bamboo powder; Weigh the following components in parts by weight: 100 parts of bamboo powder, 8 parts of NaOH, 220 parts of water, put into autoclave, carry out a degradation reaction 75min under 140 ℃, 0.4MPa condition, Cool down to obtain bamboo liquid;
[0048] 2) Preparation of mixed degradation solution: shaving, trimming, and drying the chrome-tanned wet-blue leather discarded by the tannery, and crushing to a length of 3 mm to obtain leather shavings; take 200 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 115°C and 0.18MPa, carry out the secondary degradation reaction for 90 minutes, and...
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