Preparation method of dimer acid polyol and application thereof in polyurethane foam

Abstract

The invention discloses a preparation method of dimer acid polyol and an application thereof in polyurethane foam, and belongs to the field of biological source high polymer materials. According to the preparation method of the dimer acid polyol, provided by the invention, dimer acid and propanetriol are used as raw materials, and bis(lauroyloxy)dioctyl tin, zinc acetate, tetrabutyl titanate and the like are used as catalysts to perform an esterification reaction to obtain polyhydroxyl polyol. The dimer acid polyol provided by the invention has the advantages that the raw materials are wide in source, can be extracted from common plants, and are nontoxic and harmless. The polyurethane foam prepared by using the dimer acid polyol has the characteristics of good mechanical properties and excellent thermal insulation property.

Description

technical field

[0001] The invention relates to the synthesis of a bio-source dimer acid polyol and its application in polyurethane foam, belonging to the field of bio-source polymer materials. Background technique

[0002] Polyurethane foam is currently the best thermal insulation material in the world. It is a kind of polymer whose main chain contains -NHCOO-repeating structural units, and the English abbreviation is PU. It is polymerized from isocyanate (monomer) and hydroxyl compound. The production process is to prepare closed-cell foam containing carbamate group by using polyol and isocyanate with catalyst, foaming agent and other auxiliary agents at an appropriate ambient temperature. The polyols used in polyurethane foam are mainly polyether polyols and polyester polyols, which are extracted from petroleum, which is a non-renewable energy source. Faced with the current situation of increasing resource shortage and continuous social progress, this is contrary to the ...

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