The main uses of corn starch are as follows:
1. Corn starch can be used as sand core adhesive in the foundry industry, and corn starch is often used as a settling agent for flotation ore in the metallurgical industry.
2. Corn starch can be used in the food industry, sugar refining, and pharmaceutical industries. Use starch as raw material to produce antibiotics and vitamins.
3. In the petroleum industry, corn starch is used in oil well drilling mud to make it water-storage, and in dry batteries, corn starch is used as the electrolyte carrier.
4. Corn starch is also added to the repair cement of the oil wall. Industries such as paint, plastics, dyes, textiles, papermaking, tire rubber, etc. all use starch as a necessary material, and it is also the starting material for making various types of modified starch.
In fact, cornstarch has many uses in food. For example, cornstarch can be used as a thickener to make dishes smoother. Cornstarch can also be used to make cakes, which are both delicious and nutritious.
Special properties:
Corn starch mixed with water has a strange property. It will harden when hit quickly, but not when hit slowly. Mix cornstarch and water at a weight ratio of about 3:2 and stir evenly. Increase or decrease the amount of water as appropriate. This shear-thickening fluid, called "oobleck", is a non-Newtonian fluid. Pour about 5mL of the finished product into the palm of your hand, and rub it with both hands to turn the original liquid product into solid balls like balls.
About half a second after you stop rubbing, the ball will quickly "melt" and return to the liquid state. You can repeat the rubbing action to demonstrate this special property. Place approximately 50 to 100 mL of finished product in a disposable paper cup. Use disposable paper cups or plastic cups to reduce weight and facilitate operation. First, gently tilt the paper cup to allow participants to view the liquid finished product inside the paper cup. Then the finished product in the paper cup is quickly splashed on the audience. This phenomenon can leave a deep impression on the participants.