Preparation method of high-stability adhesive for corrugated board
A corrugated board, high stability technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive types, etc. The combined strength is stable, the waterproof effect is enhanced, and the addition amount is reduced.
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Embodiment 1
[0017] A method for preparing an adhesive for corrugated cardboard with high stability, comprising the steps of:
[0018] S1. Stir 40g of glutinous rice flour, 25g of cornstarch, and 1g of water-based polyurethane resin at room temperature, add 300g of 0.2mol / L potassium hydroxide solution and stir for 50min, raise the temperature to 75°C and continue stirring for 4h, then cool down to room temperature to obtain pretreated glutinous rice flour ;
[0019] S2. Mix 10g cellulose acetate, 3g polyethylene oxide, and 40g N,N-dimethylformamide, heat up to 90°C and stir for 30min, filter, wash with deionized water, freeze-dry, pulverize, add 8g light carbonic acid Calcium, 1g of casein, 2g of sweet-scented osmanthus powder, 1g of sepiolite powder are mixed evenly, and 320g of pretreated glutinous rice flour is added and mixed evenly to obtain a mixture;
[0020] S3. Add 2 g of borax, 1 g of defoamer, and 4 g of ammonium persulfate to 300 g of the mixture and stir for 2 hours to obtai...
Embodiment 2
[0022] A method for preparing an adhesive for corrugated cardboard with high stability, comprising the steps of:
[0023] S1. Stir 80g of glutinous rice flour, 15g of cornstarch, and 3g of water-based polyurethane resin at room temperature, add 200g of potassium hydroxide solution with a concentration of 0.6mol / L and stir for 20min, raise the temperature to 85°C and continue stirring for 2h, then cool down to room temperature to obtain pretreated glutinous rice flour ;
[0024] S2. Mix 20g of cellulose acetate, 1g of polyethylene oxide, and 60g of N,N-dimethylformamide, heat up to 70°C and stir for 60min, filter, wash with deionized water, freeze-dry, pulverize, add 2g of light carbonic acid Calcium, 2g of casein, 1g of sweet-scented osmanthus powder, 2g of sepiolite powder are mixed evenly, and 280g of pretreated glutinous rice flour is added and mixed evenly to obtain a mixture;
[0025] S3. Add 1 g of borax, 2 g of defoamer, and 2 g of ammonium persulfate to 340 g of the m...
Embodiment 3
[0027] A method for preparing an adhesive for corrugated cardboard with high stability, comprising the steps of:
[0028] S1. Stir 50g of glutinous rice flour, 22g of cornstarch, and 1.5g of water-based polyurethane resin at room temperature, add 280g of 0.3mol / L potassium hydroxide solution and stir for 40min, raise the temperature to 78°C and continue stirring for 3.5h, cool down to room temperature to obtain pretreatment glutinous rice flour;
[0029] S2. Mix 12g of cellulose acetate, 2.5g of polyethylene oxide, and 45g of N,N-dimethylformamide, heat up to 85°C and stir for 40min, filter, wash with deionized water, freeze-dry, pulverize, add 6g of light Calcium carbonate, 1.2g casein, 1.7g sweet-scented osmanthus powder, 1.4g sepiolite powder were mixed evenly, and 300g pretreated glutinous rice flour was added and mixed evenly to obtain a mixture;
[0030] S3. Add 1.8 g of borax, 1.3 g of defoamer, and 3.5 g of ammonium persulfate to 320 g of the mixture and stir for 2.2 ...
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