A kind of high-strength polyethylene composite film for water treatment and preparation method thereof
A high-strength polyethylene and composite membrane technology, which is applied in the direction of osmosis/dialysis water/sewage treatment, chemical instruments and methods, membranes, etc., can solve the problems of decreased mechanical capacity, easy to block pores, short service life, etc. Short, suppresses clogging problems, evenly distributed effect
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Embodiment 1
[0023] Step 1: Preparation of solvent: Mix the PVA solution with a concentration of 0.8wt% and the bacterial cellulose solution with a concentration of 0.5wt% in a volume ratio of 2:1, set it at 92°C and stir for 1.25 hours to obtain solution A, which is set aside; Concentration is that the sulfuric acid solution of 6wt% and the tartaric acid solution of 0.28wt% are equal-volume mixed, and setting temperature is 28 ℃ and stirs for 42 minutes, obtains solution B, for subsequent use; Hydroquinone solution and sodium lauryl sulfate solution with a concentration of 0.15wt% were mixed in equal volumes to obtain solution C for subsequent use; acryloyl chloride was dissolved in toluene to obtain solution D with a concentration of 1.5wt% for subsequent use; the mass ratio 12.5:1 L-cysteine and potassium persulfate are dissolved in a buffer solution to obtain a solution E with a concentration of 22wt%, which is set aside;
[0024]Step 2: Preparation of polyethylene composite membrane...
Embodiment 2
[0026] Step 1: Preparation of solvent: mix the PVA solution with a concentration of 0.5wt% and the bacterial cellulose solution with a concentration of 0.4wt% at a volume ratio of 2:1, set it at 90°C and stir for 1 hour to obtain solution A, which is set aside; Concentration is that the sulfuric acid solution of 5wt% and the tartaric acid solution of 0.25wt% are equal-volume mixed, and setting temperature is 25 ℃ and stirs for 40 minutes, obtains solution B, for subsequent use; Hydroquinone solution and sodium lauryl sulfate solution with a concentration of 0.1wt% were mixed in equal volumes to obtain solution C for subsequent use; acryloyl chloride was dissolved in toluene to obtain solution D with a concentration of 1 wt% for subsequent use; the mass ratio was 12:1 L-cysteine and potassium persulfate are dissolved in a buffer solution to obtain a solution E with a concentration of 20 wt%, which is set aside;
[0027] Step 2: Preparation of polyethylene composite membrane: ...
Embodiment 3
[0029] Step 1: Preparation of solvent: Mix the PVA solution with a concentration of 1wt% and the bacterial cellulose solution with a concentration of 0.6wt% in a volume ratio of 2:1, set it at 95°C and stir for 1.5 hours to obtain solution A, which is set aside; Mix equal volumes of 8wt% sulfuric acid solution and 0.3wt% tartaric acid solution, set the temperature at 30°C and stir for 45 minutes to obtain solution B for subsequent use; The diphenol solution and the sodium lauryl sulfate solution with a concentration of 0.2wt% are mixed in equal volumes to obtain solution C, which is for subsequent use; acryloyl chloride is dissolved in toluene to obtain a solution D with a concentration of 2wt%, which is for subsequent use; the mass ratio is 13 : 1 L-cysteine and potassium persulfate are dissolved in a buffer solution to obtain a solution E with a concentration of 25wt%, for subsequent use;
[0030] Step 2: Preparation of polyethylene composite membrane: soak the microporous...
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