日用化学(国外英文资料).doc

日用化学(国外英文资料) Thinking questions (1) 1. synergistic effect (synergy): different combinations of components often achieve better performance than any single component in the mixture 2.Cmc critical micelle (beam) concentration: the minimum concentration of micelle (beam) in surfactant solution is called critical micelle (beam) concentration (abbreviated as CMC). 3.Krafft: the solubility of ionic surfactants in water increased with temperature only when the low temperature increased slowly, but the temperature rise to a certain value, the solubility increases rapidly, the temperature is called the critical solution temperature, the so-called Krafft 4.HLB value: the hydrophilic and lipophilic groups of the surfactant have the value of hydrophilic and lipophilic balance, the.HLB value is large, the hydrophilicity is strong, and the lipophilic property is weak; the HLB value is small, the lipophilic property is strong, and the hydrophilicity is weak 5. cloud point slowly heats up the transparent water solution of non-ionic surfactant. When the surfactant begins to precipitate and the solution appears cloudy, the temperature is the cloud point of non-ionic surfactant. 6. washing process, basic principles and influencing factors. The basic principle of washing in the washing process, add detergent to reduce the adhesion of dirt and solid surface and subjected to mechanical agitation, by means of the medium (water) the impact of dirt and solid surface separation and suspended in the medium, then rinse clean dirt The washing process: 1. in detergent under the effect of separation of dirt and its carrier; 2. out of dirt were scattered and suspended in the medium, to prevent dirt redeposition effect: detergent concentration, temperature, soil properties, fiber types, the structure of fabric The purpose and effect of process flow, principle and the process of the 7. production base of boiling. Grease, salting out, washing, alkali saponification, analysis and finishing, drying, so