Environmental Friendly and High Temperature Leveling Agent
Time: Click: 146
In recent years, people's awareness of environmental protection has been gradually strengthened. The environmental protection for the textile has become a focus of attention of producers and consumers. APEO content is an important indicator of environmental protection in international textile trade.
The types of environmental hormones produced by textile dyeing and finishing auxiliaries account for 37% of internationally recognized hormones. Among them, the content of alkyl phenol polyoxyethylene ether (APEO) is the highest in textile testing, ranging from 30 mg/kg to 100 mg/kg. At present, most of the raw materials used to prepare high temperature leveling agent contain APEO. Therefore, researchers have developed environmental friendly and high temperature leveling agent.
High-temperature leveling agents are divided into non-ionic high-temperature leveling agents, anionic high-temperature leveling agents and anion/non-ionic compound high-temperature leveling agents.
Non-ionic high-temperatureleveling agent is mostly polyoxyethylene ether structure, and the polyoxyethylene ether chain segment has asymmetric amphiphilic structure, of which the ethoxy component has certain affinity to disperse dyes, binding with dyes in the dyeing process, which reduces the initial dyeing rate of the dyeing and achieves leveling purpose. For low cloud point non-ionic surfactants, dyes are easy to associate and coagulate at high temperature. Therefore, the non-ionic high temperature leveling agents are seldom used alone.
Anionic high-temperature leveling agent can form a strong negative charge layer on the surface of dye particles. Because of the strong electrostatic repulsion between charged dye particles, it can form a stable dispersion state. It has good dispersion and solubilization effect on disperse dyes, and can reduce the cohesion of dyes, and occupies a high proportion in the use of high-temperature leveling agent.
Anionic and nonionic complexes have synergistic effects and synergistic effects, which can improve cloud point, high temperature dispersion, solubilization and leveling. They are also commonly used in the preparation of high temperature leveling agents.
May 12, 2017The Improving of the fastness to wet rubbing of the deeper color fabric dyed with reactive dye is one of the method to enhance the fabric's quality and overcome the export barrier.The reasons that cau...view
April 9, 2019Dye fixing agents is an assistant used to improve the color fastness to wet treatment of dyes on fabrics. Insoluble colors can be formed with dyes on fabrics to improve the color fastness to washing a...view
September 11, 2017The after finishing process of knitted fabric is generally of two kinds, they are cylinder and slitting open-width.The cylinder process mainly deal with the rib of the small round machine, cotton wool...view
May 5, 2017Non-formaldehyde fixing agent property is evaluated according to the fixing result of dyed fabric: Dyeing and sampling→ fixing → the evaluation on the fixing agent: ①color changes in hue ②Wet fas...view
May 2, 2017Washing is one of the important steps in the process of finishing. Developing with time, washing become the more and more important in the coming textile industry.Scouring water is the use of chemical...view