Acrylic emulsion is a water-based emulsion, composed of two different monomers: soft monomers and hard monomers. Soft monomers refer to monomers with high hydrophilicity and dispersion performance. Hard monomers refer to monomers with high lipophilicity and crystallization properties.

The functional differences between soft monomers and hard monomers

1. Different dispersion properties:

Soft monomers have good dispersion performance, which can make the particles in the emulsion disperse evenly and improve the quality of products such as coatings and adhesives. Hard monomers, on the other hand, have poor dispersion performance, which can easily lead to particle agglomeration and affect product quality.

2. Different morphological stability:

Hard monomers have high crystallization performance, which can improve the morphological stability of the emulsion and prevent the precipitation and phase separation of the emulsion. However, soft monomers have poor crystallization performance and are prone to causing emulsion instability. 3. Different application fields: Soft monomers are suitable for preparing highly dispersed, highly transparent and highly hard emulsion products; Hard monomers, on the other hand, are suitable for preparing emulsion products with high filling amount, high flexibility and high viscosity.

Ii. The proportion of soft monomers to hard monomers in acrylic emulsion

Under normal circumstances, the ratio of soft monomers to hard monomers is between 3:7 and 7:3. In practical applications, it is necessary to select the appropriate proportion of monomers based on the requirements of the product and process conditions to achieve better performance and effect.

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