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Wednesday, 18 September 2019
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Raw materials & technologies, Raw materials, Coatings binders

Properties of binders for wood coatings studied

Thursday, 12 July 2012

Providing a rationale for obtaining the desired performance of binders for wood coatings in terms of the ideal balance between hardness development, blocking resistance and blushing resistance is the subject of a new study.

Study presents results for obtaining the desired performance of binders for wood coatings / Source: Fotolia

Study presents results for obtaining the desired performance of binders for wood coatings / Source: Fotolia

German researchers investigated the partitioning of three coalescents of different polarity in different phases of multiphase acrylic particles.

Minimum film formation temperature- and aqueous differential scanning calorimetry-measurements on the hard phase polymer by itself showed the different extents to which both hydroplasticisation and plasticisation by the coalescent occur.

Dynamic mechanical thermal analysis was used to visualize wet-Tg effects of three different coalescents in the hard and soft polymer phase of the multiphase acrylic particles. According to the authors, the results have important consequences for the formulation of such binders in applications for exterior wood coatings.

Read the complete study "Preferred partitioning: the influence of coalescents on the build-up of mechanical properties in acrylic core–shell particles” in "Journal of Coatings Technology and Research”, vol. 9, No. 4 (2012), pp. 399-409.

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