Today I will sort out the knowledge about HLB for you.
What is the HLB value?
HLB value: Surfactant is an amphiphilic molecule with a hydrophilic group and a lipophilic group. The sum of the sizes of the hydrophilic group and the lipophilic group in the surfactant molecule The quantity of the degree of power balance is defined as the hydrophilic-lipophilic balance value of the surfactant.
The three letters of HLB mean respectively
In HLB “H” “Hydrophile” means hydrophilicity, L means “Lipophilic” means lipophilicity, and B means “Balance” means balance. Also called water oiliness
In practical applications, the lipophilicity or hydrophilicity of surfactants can be judged by the size of the HLB value. The larger the HLB value, the more hydrophilic it is. Strong, the smaller the HLB value, the stronger the lipophilicity. Generally speaking, the HLB value ranges from 1 to 40.
HLB has important reference value in practical applications. Lipophilic surfactants have lower HLB and hydrophilic surfactants have higher HLB. The hydrophilic and lipophilic turning point HLB is 10. HLB less than 10 is lipophilic, and greater than 10 is hydrophilic.
What are the HLB values of various commonly used additives?
Example:
1~3 are used as defoamer;:
3~6 is used as W/O emulsifier;
7~9 is used as wetting agent; 8~18 is used as O /W type emulsifier;
13~15 are used as detergent;
15~18 are used as solubilizer. </p
