Cellulose solution prepared with low energy consumption and novel preparation thereof
A cellulose solution and low energy consumption technology, applied in the field of materials, can solve the problems of difficult operation, high equipment requirements, high energy consumption, etc., and achieve the effect of simple experimental conditions and reduced energy consumption
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[0022] Example 1
[0023] Step (1) First place 68 grams of a mixed solution containing 7% by weight of lithium hydroxide and 93% by weight of water stored in a container in a refrigerator and take it out when it is pre-cooled to 5°C;
[0024] Step (2) adding 32 grams of viscose fiber with a degree of polymerization of 200 with a weight percentage of 32% to the above mixed solution and uniformly stirring for 3 minutes to generate an alkali cellulose solution;
[0025] Step (3) Add 100 grams of 6% and 14% thiourea and urea aqueous solutions that have been pre-cooled to 15°C in the alkali cellulose solution, and stir evenly for 5 minutes to obtain a transparent cellulose solution .
[0026] The total time for preparing the cellulose solution is 8 minutes. The final weight percentages of the substances contained in the prepared cellulose solution are: 16% cellulose, 3.5% lithium hydroxide, 3% thiourea, 7% urea, and the rest are water. According to the patent application No. 2007100461...
Example Embodiment
[0027] Example 2
[0028] Step (1) First place 90 grams of a mixed solution containing 6% by weight of lithium hydroxide and 94% by weight of water stored in a container in a refrigerator and take it out when it is pre-cooled to 10°C;
[0029] Step (2) adding 10 grams of viscose fiber with a degree of polymerization of 300 with a weight percentage of 10% to the above mixed solution and uniformly stirring for 3 minutes to generate an alkali cellulose solution;
[0030] Step (3) Add 100 grams of 0% and 30% thiourea and urea aqueous solutions that have been pre-cooled to 15°C in the alkali cellulose solution, and stir evenly for 3 minutes to obtain a transparent cellulose solution .
[0031] The total time for preparing the cellulose solution is 6 minutes. The final weight percentages of the substances contained in the prepared cellulose solution are: cellulose 5%, lithium hydroxide 3%, thiourea 0%, urea 15%, and the rest are water. According to the patent application No. 20071004618...
Example Embodiment
[0032] Example 3
[0033] Step (1) First place 84 grams of a mixed solution containing 9% by weight of lithium hydroxide and 91% by weight of water stored in a container in a refrigerator and take it out when it is pre-cooled to 5°C;
[0034] Step (2) adding 16 grams of cotton pulp with a degree of polymerization of 400 with a weight percentage of 16% to the above mixed solution and uniformly stirring for 5 minutes to generate an alkali cellulose solution;
[0035] Step (3) Add 100 grams of thiourea and urea aqueous solutions which have been pre-cooled to 5°C with a weight percentage of 14% and 2% respectively in the alkali cellulose solution, and stir evenly for 4 minutes to obtain a transparent cellulose solution .
[0036] The total time for preparing the cellulose solution is 9 minutes. The final weight percentages of the substances contained in the prepared cellulose solution are: 8% cellulose, 4.5% lithium hydroxide, 7% thiourea, 1% urea, and the rest are water. According to...
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