The effect of some boroorganic compounds on the properties of rigid polyurethane - polyisocyanurate foams

• Autorzy: Czupryński B. , Paciorek-Sadowska J. , Liszkowska J. , Polański J.
• Języki publikacji: EN

Abstrakty

EN

The method of boroorganic compounds preparation by estrification of boric acid and various glycols has been described. The borates obtained i.e. tri(2-hydroxypropyl) borate - THPB, tri(2-hydroxybutyl) borate - THBB and tri(thiodiglycol) borate were applied to prepare the rigid polyurethane - polyisocyanurate foams (PIR-PUR). The foams were prepared by one-stage method and the amount of borates applied was various from 0.0 to 0.4 of the chemical equivalent. The borates used to prepare the foam composition caused the structure to become ordered. It favoured the reduction of their brittleness. Addition of borates reduced the flammability of foams what resulted in the increase of oxygen index. Introducing THPB and THBB into the foam composition caused a significant increase in compressive strength but addition of TTDGB caused its decrease. It is probably due to a long TTDGB chain containing sulphur atoms in its middle part what results in plastifization of foams. Our studies have shown tri(2-hydroxypropyl) and tri(2-hydroxybutyl) borates to be useful as an addition improving the polyurethene - polyisocyanurate foam properties; however, the usability of tri(thiodiglycol) borate is limited.

Słowa kluczowe

EN

rigid polyurethane; polyisocyanurate foam; modification; borates; boron polyols

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 2003
• Tom: Vol. 47, nr 2
• Strony: 115--125
• Opis fizyczny: Bibliogr. 16 poz., Rys. 4, Tab. 5

Twórcy

autor

Czupryński B.

• Casimir the Great Academy of Bydgoszcz, Chodkiewicza str. 30, 85-064 Bydgoszcz, Poland

autor

Paciorek-Sadowska J.

• Casimir the Great Academy of Bydgoszcz, Chodkiewicza str. 30, 85-064 Bydgoszcz, Poland

autor

Liszkowska J.

• Casimir the Great Academy of Bydgoszcz, Chodkiewicza str. 30, 85-064 Bydgoszcz, Poland

autor

Polański J.

• Casimir the Great Academy of Bydgoszcz, Chodkiewicza str. 30, 85-064 Bydgoszcz, Poland

Bibliografia

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