Solid-liquid mixed type foam stabilizer and preparation method thereof
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A technology of solid-liquid mixing and foam stabilizer, which is applied in the direction of textiles and papermaking, can solve the problem of no significant improvement in pore dispersion, achieve the effects of eliminating irritating odor, improving the working environment, and improving foam stability
Active Publication Date: 2021-04-13
YANGZHOU UNIV
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The applicant has also used solid calcium carbonate particles alone as a foam stabilizer in the patent previously applied for. After it is made into a foam coating, the aperture of the foam coating is significantly smaller, but the pore dispersion is the same as that of traditional stearin Ammonium Acid Emulsion Comparable, No Significant Improvement
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Embodiment 1
[0023] 1) Weigh 20 parts of propylene glycol, 20 parts of stearic acid and 10 parts of calcium carbonate (particle size 2 microns) particles in a reaction kettle, control the temperature at 50°C, mix and stir to form a suspension;
[0024] 2) adding dropwise 20 parts of mass fraction again is 20% potassium hydroxide solution (n 氢氧化钾 :n 硬脂酸 =1:1), and continued to stir for 3 hours at 50°C;
[0025] 3) After the reaction is over, continue to add water to the reactor until the total mass of the product is 100 parts, and mix and stir for 10 minutes;
[0026] 4) The product is emulsified (shear rate 10000r / min, emulsification time 60min) to obtain the final product.
Embodiment 2
[0028] 1) Weigh 10 parts of ethylene glycol, 10 parts of stearic acid and 20 parts of calcium carbonate (particle size 0.5 micron) particles in a reaction kettle, control the temperature at 40°C, mix and stir to form a suspension;
[0029] 2) 20 parts of mass fractions are 10% potassium hydroxide solution (n 氢氧化钾 :n 硬脂酸 =1:1), and continued to stir for 4 hours at 40°C;
[0030] 3) After the reaction is over, continue to add water to the reactor until the total mass of the product is 100 parts, and mix and stir for 10 minutes;
[0031] 4) The product is emulsified (shear rate 15000r / min, emulsification time 45min) to obtain the final product.
Embodiment 3
[0033] 1) Weigh 20 parts of propylene glycol, 10 parts of stearic acid and 20 parts of calcium carbonate (5 microns in particle size) particles in a reaction kettle, control the temperature at 65°C, mix and stir to form a suspension;
[0034] 2) 20 parts of mass fractions are 20% potassium hydroxide solution (n 氢氧化钾 :n 硬脂酸 =2:1), continued to stir for 2 hours at 65°C;
[0035] 3) After the reaction is over, continue to add water to the reactor until the total mass of the product is 100 parts, and mix and stir for 10 minutes;
[0036] 4) The product is emulsified (shear rate 20000r / min, emulsification time 30min) to obtain the final product.
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Abstract
The invention discloses a solid-liquid mixed type foam stabilizer and a preparation method thereof. The solid-liquid mixed type foam stabilizer is prepared from emulsion and solid particles, wherein the emulsion is potassium stearate emulsion and/or sodium stearate emulsion, and the solid particles are calcium carbonate particles with stearic acid molecules chemically grafted on the surfaces. The solid-liquid mixed type foam stabilizer is prepared by reacting raw materials containing stearic acid, sodium hydroxide and/or potassium hydroxide and calcium carbonate particles. The preparation method comprises the following steps that an organic solvent, stearic acid and calcium carbonate particles are added into a reaction kettle, the temperature is adjusted to 40-65 DEG C, and mixing and stirring are carried out; an aqueous alkali solution is continuously dropwise added, and reacting is carried out for 2-4 hours after dropwise adding is finished; after the reaction is finished, a sufficient amount of water is supplemented into the reaction kettle; and shearing and emulsifying are carried out at high speed to obtain a final product. According to the solid-liquid mixed foam stabilizer, the problem of poor foam stabilizing performance of traditional sodium soap and potassium soap emulsions is solved, the foam stabilizing performance of the obtained mixed foam stabilizer is significantly improved, and the mixed foam stabilizer is better than traditional ammonium stearate emulsions.
Description
technical field [0001] The invention relates to a foam stabilizer and a preparation method thereof, in particular to a solid-liquid mixed type foam stabilizer and a preparation method thereof, belonging to the technical field of chemical additives. Background technique [0002] Coating water-based polymer foam coating on the surface of fabric or cloth is widely used in the production process of PU synthetic leather and blackout cloth. The coating layer has the properties of flame retardancy, anti-fouling, light-shielding, etc., and makes the fabric or cloth base have a unique style, feel and appearance. The production and preparation process of water-based polymer foam coating is to add a foaming agent (usually a surfactant) to the finishing working solution, and then use foaming equipment to mix it with air to form a foam slurry, and then use the foam applicator to apply Foam is applied evenly to fabric or cloth-based surfaces. [0003] Since the foam is an unstable syste...
Claims
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Application Information
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