Application of polyethylene glycol in textile auxiliaries

Choosing whether to use polyethylene glycol 400 (PEG400) or polyethylene glycol 600 (PEG600) in textile auxiliaries usually depends on the specific application needs and the performance requirements of the end product. The different molecular weights of PEG affect its physical and functional properties.

1. Polyethylene Glycol 400 (PEG400)

Molecular weight: Low, about 400 Daltons.

Physical state: liquid at room temperature.

Features: Better water solubility and higher fluidity. Its strong hydrophilicity makes it a good wetting agent and emulsifier.

It may be more suitable as an antistatic agent and softener because its low viscosity helps to improve the feel of the fabric and reduce static electricity. Ideal for applications requiring good dispersion and fast penetration.

2. Peg 600 (PEG600)

Molecular weight: Higher, about 600 Daltons.

Physical state: May be thicker or close to semi-solid at room temperature.

Characteristics: Relatively low water solubility and flow properties. Due to the larger molecular weight, it may provide better film formation and protection. May be more suitable for applications requiring higher viscosity or specific film forming properties. In metal processing, it may provide better grinding results due to its higher molecular weight.

3. Selection recommendations: If you need an agent that is easy to handle, has good fluidity, can penetrate quickly and has excellent wetting and emulsifying properties, then PEG400 may be a better choice. If the application requires higher viscosity, better film formation, or in some cases a more stable emulsion, then PEG600 may be considered more appropriate.

The final selection should be based on experimental data and test results during actual production to determine which PEG is more suitable for a particular textile processing process. In the textile industry, a cost-benefit analysis may also need to be considered and whether it needs to be combined with other auxiliaries to achieve the best results.