Method for preparing high water absorption and water retention composite materials containing layer silicate mineral
A layered silicate and composite material technology, which is applied in the field of preparation of super water-absorbing and water-retaining composite materials, can solve the problems of short service life, high raw material and preparation costs, and easy mildew, and achieve low cost and good product performance , the effect of fast water absorption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0037] Add 230ml of cyclohexane and 1.8g of Span-60 into the reactor, raise the temperature to 75°C, blow nitrogen to drive off the oxygen, and start stirring to completely dissolve the Span-60 to form an oil phase.
[0038] Dissolve 13.4 g of sodium hydroxide in 40 g of deionized water, and let it cool for a period of time or quickly cool it in ice water. Another 30g of acrylic acid was weighed, and the sodium hydroxide solution was slowly added dropwise to the acrylic acid in an ice-water bath with stirring to neutralize (that is, the degree of neutralization was 80%), so that the weight concentration of the monomer in the water phase was 25%. , then add 0.1g of potassium persulfate and 3g of kaolinite powder (content ≥ 40%, particle size ≤ 45um) after mechanical crushing, ultrasonically disperse with ultrasonic waves, after mixing evenly, slowly add the mixed monomer aqueous solution dropwise In the above oil phase, polymerize at 75°C for 2 hours, wait until the temperature...
Embodiment 2
[0040] Add 300ml of toluene and 0.7g of Span-60 into the reactor, raise the temperature to 75°C, blow nitrogen to drive off the oxygen, and start stirring to completely dissolve Span-60 to form an oil phase.
[0041] In 100 grams of acrylic acid solution with a concentration of 50% and a neutralization degree of 60%, add 20 grams of acrylamide, 0.007 grams of N, N'-methylenebisacrylamide and 0.425 grams of ammonium persulfate under stirring, dissolve, and then add Add 96 grams of mechanically pulverized talc (content ≥ 90%, particle size ≤ 45um) and ultrasonically disperse for 20 minutes. Under the condition of constant stirring, the mixed monomer aqueous solution was slowly added dropwise into the container containing the above oil phase, and polymerized at 70°C for 5h. When the temperature drops to room temperature, add methanol for dehydration, wash with ethanol, filter, and vacuum-dry the polymerized product at 80°C for 3 hours, then mechanically pulverize or not mechanica...
Embodiment 3
[0043] Add 480ml of cyclohexane and 1.8g of Span-60 into the reactor, raise the temperature to 75°C, blow nitrogen to drive off the oxygen, and stir to completely dissolve the Span-60 to form an oil phase.
[0044] Add 40 grams of acrylamide to 200 grams of methacrylic acid solution with a concentration of 40% and a neutralization degree of 90%, dissolve it, and add 0.024 grams of N, N'-methylenebisacrylamide, 0.115 sodium persulfate and peroxide under stirring. Dissolve 0.110 g of ammonium sulfate, then add 10 g of mechanically pulverized illite (content ≥ 60%, particle size ≤ 45 um), and disperse in a colloid mill. While maintaining constant stirring, slowly drop the mixed monomer aqueous solution into the container containing the above oil phase, and polymerize at 75°C for 3h. When the temperature drops to room temperature, add methanol for dehydration, wash with ethanol, filter, and dry the resulting gel at 110°C for 2 hours, then mechanically pulverize or without mechanic...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More