Binding agent with viscosity of 50-80 mPa.s, and preparation method and application thereof
A binder and viscosity technology, applied in the direction of conductors, electrical components, circuits, etc., can solve the problems of high energy consumption, energy consumption, troublesome use, etc., and achieve the effects of improving utilization efficiency, saving energy consumption, and being convenient to use
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[0027] The invention provides a preparation method of a binder with a viscosity of 50-80 mPa·s, comprising:
[0028] Step 1. Use sodium hydroxide to alkalize the cellulose with a degree of polymerization of 600 to 800 for 0.5 to 1 hour. The amount of sodium hydroxide is 0.5 to 0.6 times the mass of the cellulose, and the alkalization temperature is less than or equal to 50°C;
[0029] Step 2, using propylene oxide and ethylene chloride to carry out etherification treatment on the reaction product obtained in the step 1 for 0.5 to 1 h, wherein the consumption of propylene oxide is 0.1 to 0.2 times the mass of cellulose, ethylene chloride is The dosage is 0.8 to 1.2 times the mass of cellulose;
[0030] In step 3, the reaction product obtained in the second step is subjected to subsequent processing to obtain a binder.
[0031] In the preparation method of the binder with a viscosity of 50-80 mPa·s, the cellulose is obtained by treating the sulfated waste cotton linters, wherei...
Embodiment 1
[0048] Step 1. Use sodium hydroxide to alkalize the cellulose with a degree of polymerization of 600 to 800 for 0.5h, the amount of sodium hydroxide is 0.5 times the mass of the cellulose, the alkalization temperature is 40 ° C, and the alkalization treatment is performed in nitrogen. Under the environment, the pressure is always 0.04MPa;
[0049] Step 2, adopt propylene oxide and ethyl chloride to carry out etherification treatment to the reaction product obtained in the step 1 for 0.5h, wherein, the consumption of propylene oxide is respectively 0.1 times of the quality of cellulose, and the consumption of ethyl chloride is 0.8 times the mass of cellulose, and the pressure of the etherification reaction environment is kept at 0.14MPa;
[0050] Step 3, carry out follow-up processing to the reaction product obtained in the step 2:
[0051] Step (a), separate the liquid in the reaction product obtained in the step 2 to obtain a solid reaction product; the liquid obtained by sepa...
Embodiment 2
[0056] Step 1. Use sodium hydroxide to alkalize cellulose with a degree of polymerization of 600 to 800 for 1 hour. The amount of sodium hydroxide is 0.6 times the mass of the cellulose. The alkalization temperature is 50°C, and the alkalization treatment is performed in a nitrogen environment. Carry out, the pressure is 0.05MPa;
[0057] Step 2, adopting propylene oxide and ethylene chloride to carry out etherification treatment for 1h to the reaction product obtained in the step 1, wherein, the consumption of propylene oxide is respectively 0.2 times of the quality of cellulose, and the consumption of ethylene chloride is cellulose 1.2 times the mass of the element, and the pressure of the etherification reaction environment is 0.15MPa;
[0058] Step 3, carry out follow-up processing to the reaction product obtained in the step 2:
[0059] Step (a), separate the liquid in the reaction product obtained in the step 2 to obtain a solid reaction product; the liquid obtained by ...
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Abstract
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