What should I pay attention to when choosing a textile auxiliary? Ⅱ

4. The ion characteristics of the auxiliary must be grasped

There are four types of auxiliary anion, cation and non -ions, and bisexuals. The first three types are commonly used. The anion cannot be used in the same bath with the cedic auxiliary. Infertility, this ions can be used in the same bath with cation or anionic auxiliary agent. These truths are well known, but in actual production, they are often unconsciously ignored. For example, the color fixing agent is cationic and cannot meet with anionic auxiliary, but many factories are washed directly, acidic, and active dyes after washing after washing after washing after washing. Wash with pineral soap washing agent soap, but then did not wash the washing agent, and the color fixing agent was performed. At this time, the color fixing agent was fully tied with the laundry on the cloth. The color effect also affects the soap washing and frictionality of the dye due to the precipitation of the soap washing agent and the color fixing agent.

5. Do not minimize the amount of the auxiliary agent at will

The printed and dyeing auxiliary components are roughly divided into two categories, namely the auxiliary agent of functional auxiliary and surfactants. The former uses different compounds to play a functional role during processing, such as: oxygen drift stabilizer, color fixing agent, color repair agent, foaming agent, soft agent, green agent, water refusal, flame retardant, flame retardant,, flame retardant, Wrinkle anti -wrinkles, etc., they can achieve the expected results when a certain amount. The other is the use of surfactants as a printing and dyeing aid, such as penetration agent, cleaning agent, uniform agent, sperm agent, foaming agent, dispersant, emulsifier, etc. The effect is actually exerting the surfactant agent. The functions of wetting, emulsification, dispersing, and dissolving are the specific performance of the comprehensive effect or single effect of its functions. Therefore, the theory of surfactant is fully in line with the theory of surfactants. Therefore, it is necessary to learn the knowledge of the surfactant. Surface active agents will form rubber balls in dissolving. The concentration of rubber balls appears is called the concentration of the beam, referred to as C.M.C. The number of rubber balls with a concentration of C.M.C increases, the rubber ball becomes larger, and the wetting effect of the surfactant can occur below the C.M.C concentration. It can only be effective in C.M.C. Generally, the C.M.C value of pure surfactants does not exceed 0.2g/L, while the amount of surfactants active activity is only 15-20%, and the total solid amount is 40%in addition to other auxiliary materials. The C.M.C of Chengcheng products does not exceed 1g/L. In other words, the concentration of the use of the auxiliary should be at least 0.5g/L before the rubber ball is started. When the concentration of this concentration is increased The dosage of the agent cannot be reduced at will, especially the cheap and clean washing agent for commercially available. Its effective ingredients are only 5%, and a large amount is Yuanming powder. The amount of soap agent during soap washing is the reason for the amount of soap agent. The wetting infiltration is not the plastic dumplings, but the single molecular surface active agent is played. Therefore, below C.M.C, the concentration in the processing solution does not need to exceed 1g/L.

6. The auxiliary must be dissolved and diluted before adding it to the processing solution

Due to the different proportion of the raw materials and different solubility, the resolution of the commercial sales auxiliary is often not the same in the commercial sales auxiliary solution, which causes the effect to affect the effect. Even layers, as long as it is not a lotion, this phenomenon can still be allowed, but when used before use, the operator must be strictly stirred first, and then the material is not allowed to be turbid and layered if it is emulsion. Appear. This shows that the emulsion has been broken, and it cannot be used again, or it must be quickly stirred by quickly. It can be used when it can be used by a high -speed centrifugal separation test.

The solid auxiliary agent is completely used with hot water. The liquid auxiliary must be diluted with warm water and then used. The auxiliary of high viscosity must be slowly diluted with water. The agent, pulp, as long as it is not diluted and the mold is not much, it can be skimped off the upper layer.

After dissolving the diluted auxiliary agent, the processing bath should be determined according to the process requirements. Generally, the fabric is added to the treatment liquid before entering the processing bath. After the solution circulation is uniform, the fabric will be imported. Before the dyeing liquid is added, the fabric runs in the dyeing agent for a few minutes before adding the dye solution.