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Carbomer Soaking Tips and Steps

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Update time : 2020-11-08 22:05:56

Carbomer Soaking Tips and Steps
 
Due to the special structure of carbomer resin, it is easy to swell when exposed to water, so it is necessary to set aside time for it to fully dissolve in water, otherwise the resulting gel is easy to swell.
 
1. First add the carbs weighed in proportion (generally add about %) into the beaker, then wet it with a little alcohol to pre-disperse, then add 80 degrees Celsius water soak, even if it is not stirred at 4-6 It is almost fully dissolved in hours.
 
2. Prepare the carbo solution, then mix the other components with the carbo solution and neutralize it with TEA to the pH range of 6-7. Because the amount of triethanolamine is not well grasped, a slight excess will cause the system to become thinner, so it is recommended to dilute TEA into a 10% aqueous solution first, and use a dropper to add dropwise, stirring while adding, to see the system When it becomes more and more transparent, the PH value is measured when the state becomes thicker and thicker, and it is basically in this range.
 
Dispersion skills:
Carbomer has very strong hydrophilicity. The carbomer of dry powder is very hygroscopic. Like other hygroscopic powders, it is easy to put it into water or other polar solvents in an improper way. Clusters or incomplete wetting.
Other powders will eventually decrease and dissolve after forming agglomerates, but the carbomer will not dissolve easily after forming agglomerates, because once the outer layer of the agglomerate is completely infiltrated, the water will not easily penetrate into the inner dry part. To
 
To avoid the carbomer from forming agglomerates, the resin particles must be evenly dispersed in cold water. This can be carried out under high-speed stirring at 500-800rpm, and the carbomer is screened into the stirring vortex with a screen. The optional dispersing equipment can be an ejector, a flocculation disperser, and a conventional disperser.
 
Two methods of making carbomer gel
1. The method of making carbomer directly
Material A: Carbomer 1g pure water 99ml
Material B: A few drops of triethanolamine
Material C: 0.5ml of antibacterial agent
 
Tools: Stirring stick, measuring spoon/measuring cup, pH measuring paper, an empty jar.
Production method:
1) Put material A into an empty jar and stir quickly until it is uniform. If there is agglomeration, use a stirring rod to break it. Or just add half of the water, and the rest will be antibacterial after the transparent gel is formed Add before agent.

2) Set aside and stir occasionally until the carbomer fully absorbs water and expands and no clumps are visible.
3) It takes about 2 to 3 hours for the gel to fully expand and form. If you want to shorten the gel formation time, you can use the water-proof heating method, and stir while heating, which takes about 10 to 30 minutes.
4) Add alkali to neutralize. Add slowly drop by drop, and measure the pH while stirring. At pH 7, it becomes a transparent gel. (This step is very important and is the success or failure of forming a transparent gel. The key. When making for the first time, it is best to add a drop of neutralizer-stir-measure the pH value, and repeat this step until the pH value reaches 7. In this way, you can easily master the modulation technology, and it will be very easy to make in the next production. It's easy.)
5) Add the antibacterial agent, stir evenly, and the gel is complete.
 
2. How to make 2% Carbomer Gel (50ML):
1) Weigh 1g of dry carbomer powder in a dry beaker with a scale of 50ml. If there is agglomeration, please crush it with a spoon.
2) Add 25ml of purified water and stir while adding to make the carbomer fully absorb water and swell. This step is very important. Carbopol must be allowed to fully absorb water. Generally, after adding water and stirring, leave it for a few hours (usually, MM can be configured at night before going to bed, and it must be prepared after the next day). Mu can fully swell. If you want to be faster, you can heat it in a water bath. It will be faster to stir while heating. Of course, even if heating can accelerate the carbomer swelling process, it takes 10 to 30 minutes.
3) Add the lye dropwise with a dropper, stir while adding, and measure the pH value. When the pH is adjusted, the gel is successful! (Triethanolamine can be used for lye)
4) Make up the remaining amount of water. The total volume is about 50ML.
 
The formulated gel base can be directly combined with other materials to formulate various gels, as long as the carbomer concentration is controlled within 0.8%, and it is recommended to be around 0.5%.
 
How to use: Only 0.5% concentration can make a gel product with good appearance and texture.
 
such as:
To make a 100ml gel, just take 25g of the pre-prepared 2% polymer gel and add it to the 75ml formula.
 
2% transparent gel 100ml = 2gm gel powder + 98ml pure water + 0.5ml antibacterial agent + appropriate amount of neutralizer. DIY Carbomer Gel
 
Precautions:
Carbomer gum is a highly hydrophilic anionic polymer. It is a white loose powder with strong hygroscopicity, which can swell quickly in water but does not dissolve. Its aqueous dispersion is acidic, and the pH of 1% aqueous dispersion is about 2.5 to 3.5, and its viscosity is low. When neutralized with alkali, as the macromolecules gradually dissolve, the viscosity gradually rises, forming a clear solution at low concentrations, and a translucent gel at higher concentrations. It has the largest viscosity and consistency at pH 6.5~7. When the aqueous dispersion of polymer glue is neutralized with alkali, it will form a transparent and stable gel.
 
Under normal circumstances, about 1.35g of triethanolamine is needed to neutralize 1g of polymer glue. Avoid compatibility with raw materials such as salts or acidic substances because it will reduce its viscosity. It is stable within pH 4-10. Triethanolamine (Triethanolamine) is an alkalizing agent used to adjust the pH value of the product. Avoid combining with nitrosating agents. The maximum use concentration is 2.5%. Avoid using it in the same formulation with formaldehyde as a preservative. Possible Can cause skin irritation and sensitive reactions.
1) Don't add some things randomly! Such as soluble salt, VC, very acidic solution (lemonade, vinegar). Add it in, and the carbomer gel system immediately becomes thinner,
2) Although hyaluronic acid is also acidic, it has little effect on the stability of the carbomer gel system because it is added in a small amount, so it can be added with confidence. Similarly, the pure dew is slightly acidic and has little effect after adding.
3) Carbomer itself has no nutrition and does not support the growth of bacteria and molds, but it cannot prevent the growth of bacteria and molds using the nutrients present in the gel system. So don't mix too much at one time, of course, you can add some preservatives or essential oils as needed.
4) Ultraviolet rays have a certain effect on the carbomer gel system, so keep it away from light.
5) When preparing skin care products, the final concentration of carbomer should be controlled within 0.8%. It is recommended to be around 0.5%. If the concentration is greater than 0.8%, it is easy to form a film and the skin feels bad. (Personally recommend that around 0.7 is more beautiful, too thin is close to a thicker essence.)