The influence of rapeseed oil-based polyols on the foaming process of rigid polyurethane foams

2016 ◽  
Vol 89 ◽  
pp. 182-187 ◽  
Author(s):  
Maria Kurańska ◽  
Aleksander Prociak
Keyword(s):  
Rapeseed Oil ◽  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Foaming Process

scholarly journals Bio-Based Rigid Polyurethane Foams Modified with Phosphorus Flame Retardants

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 102
Author(s):  
Marcin Zemła ◽  
Aleksander Prociak ◽  
Sławomir Michałowski
Keyword(s):  
Rapeseed Oil ◽  
Flame Retardants ◽  
Thermal Conductivity Coefficient ◽  
Oxygen Index ◽  
Cell Structure ◽  
Polyurethane Foams ◽  
Triethyl Phosphate ◽  
Rigid Polyurethane Foams ◽  
Foaming Process ◽  
Cone Calorimeter Test

Rigid polyurethane foams (RPURF) containing a bio-polyol from rapeseed oil and different phosphorus-based flame retardants were obtained. Triethyl phosphate (TEP), dimethyl propane phosphonate (DMPP) and cyclic phosphonates Addforce CT 901 (20 parts per hundred polyol by weight) were used in the synthesis of RPURF. The influence of used flame retardants on foaming process, cell structure, and physical–mechanical properties as well as flammability of RPURF were examined. The addition of flame retardants influenced the parameters of the cellular structure and decreased compressive strength. All obtained foam materials had a low thermal conductivity coefficient, which allows them to be used as thermal insulation. The research results of bio-based RPURF were compared with foams obtained without bio-polyol. All modified materials had an oxygen index above 21 vol%; therefore, they can be classified as self-extinguishing materials. The analysis of parameters obtained after the cone calorimeter test showed that the modified RPURF have a lower tendency to fire development compared to the reference foams, which was particularly noticeable for the materials with the addition of DMPP.

scholarly journals Vegetable Fillers and Rapeseed Oil-Based Polyol as Natural Raw Materials for the Production of Rigid Polyurethane Foams

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1772
Author(s):  
Milena Leszczyńska ◽  
Elżbieta Malewska ◽  
Joanna Ryszkowska ◽  
Maria Kurańska ◽  
Michał Gloc ◽  
...  
Keyword(s):  
Rapeseed Oil ◽  
Raw Materials ◽  
Cell Structure ◽  
Polyurethane Foams ◽  
Maximum Temperature ◽  
Renewable Raw Materials ◽  
The Sustainable Development ◽  
Rigid Polyurethane Foams ◽  
Foaming Process ◽  
Reported Study

The reported study concerns the introduction of renewable raw materials into the formulation of rigid polyurethane foams in the quest for the sustainable development of polymer composites. In this study, rigid polyurethane foam composites were prepared using 75 wt.% of rapeseed oil-based polyol and 15 parts per hundred parts of polyol (php) of natural fillers such as chokeberry pomace, raspberry seeds, as well as hazelnut and walnut shells. The influence of the used raw materials on the foaming process, structure, and properties of foams was investigated using a FOAMAT analyzer and a wide selection of characterization techniques. The introduction of renewable raw materials limited reactivity of the system, which reduced maximum temperature of the foaming process. Moreover, foams prepared using renewable raw materials were characterized by a more regular cell structure, a higher share of closed cells, lower apparent density, lower compressive strength and glass transition temperature, low friability (<2%), low water absorption (<1%), high dimensional stability (<±0.5%) and increased thermal stability. The proper selection and preparation of the renewable raw materials and the rational development of the polyurethane recipe composition allow for the preparation of environmentally-friendly foam products with beneficial application properties considering the demands of the circular economy in the synthesis of rigid foams.

Cooperative effect of rapeseed oil-based polyol and egg shells on the structure and properties of rigid polyurethane foams

2020 ◽  
Vol 90 ◽  
pp. 106696 ◽  
Author(s):  
Milena Leszczyńska ◽  
Joanna Ryszkowska ◽  
Leonard Szczepkowski ◽  
Maria Kurańska ◽  
Aleksander Prociak ◽  
...  
Keyword(s):  
Rapeseed Oil ◽  
Cooperative Effect ◽  
Polyurethane Foams ◽  
Structure And Properties ◽  
Rigid Polyurethane Foams ◽  
Egg Shells

Preparation and Characterization of Excellent Flame Retarded Rigid Polyurethane Foams

2011 ◽  
Vol 374-377 ◽  
pp. 1563-1566
Author(s):  
An Zhen Zhang ◽  
Yi He Zhang
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
Polyurethane Foams ◽  
Expandable Graphite ◽  
Dimethyl Methylphosphonate ◽  
Limiting Oxygen Index ◽  
Rigid Polyurethane Foams ◽  
Foaming Process ◽  
Flame Retarded

Rigid polyurethane foams were excellent thermal insulation materials with widely used, which was highly flammable at the same time. In order to obtain safe application, flame retarded polyurethane foams were needed. In this paper, series flame retarded rigid polyurethane foams were prepared with loading different flame retardants such as ammonium polyphosphate, expandable graphite, red phosphorus, Tri (2-chloroethyl) phosphate and dimethyl methylphosphonate. The effects of flame retardants on the foaming-process and flame retardant property of the rigid polyurethane foams were investigated by otary viscometer and limiting oxygen index. The results showed that the combination of solid and liquid flame retardants was necessary to improve the flame retardant and different flame retardants played synergistic roles in rigid polyurethane foams. The limiting oxygen indexes of the foams could be up to 30wt% and 29.6% with 25wt% solid flame retardants and 10wt% liquid retardants, respectively.

The influence of blowing agents type on foaming process and properties of rigid polyurethane foams

Polimery ◽  
2018 ◽  
Vol 63 (10) ◽  
pp. 672-678 ◽  
Author(s):  
Maria Kuranska ◽  
Aleksander Prociak ◽  
Slawomir Michalowski ◽  
Karolina Zawadzinska
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents ◽  
Foaming Process

Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams

2020 ◽  
Vol 135 ◽  
pp. 109884
Author(s):  
Paula Cimavilla-Román ◽  
Saul Pérez-Tamarit ◽  
Mercedes Santiago-Calvo ◽  
Miguel Ángel Rodríguez-Pérez
Keyword(s):  
Silica Aerogel ◽  
Cellular Structure ◽  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Foaming Process

Rigid polyurethane foams: A model of the foaming process

1982 ◽  
Vol 22 (13) ◽  
pp. 840-844 ◽  
Author(s):  
A. J. Rojas ◽  
J. H. Marciano ◽  
R. J. Williams
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Foaming Process

Effect of different concentration of rapeseed oil and recycled poly (ethylene terephthalate) in polyols for rigid polyurethane foams

2016 ◽  
Vol 54 (2) ◽  
pp. 161-177 ◽  
Author(s):  
Aiga Ivdre ◽  
Anda Fridrihsone-Girone ◽  
Arnis Abolins ◽  
Ugis Cabulis
Keyword(s):  
Thermal Insulation ◽  
Rapeseed Oil ◽  
Ethylene Terephthalate ◽  
Polyurethane Foams ◽  
Raw Material ◽  
Rigid Polyurethane Foams ◽  
Blowing Agent ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

In this research, polyols from rapeseed oil and recycled poly(ethylene terephthalate) were synthesized by two-step continuous synthesis with a different rapeseed oil and poly(ethylene terephthalate) concentration. All rapeseed oil/poly(ethylene terephthalate) polyols showed complete compatibility with blowing agent Solkane 365/227. The resulting polyols were used to prepare rigid polyurethane foams which were characterized with various techniques for determination of their physical, mechanical and thermal insulation properties. The effect of rapeseed oil and poly(ethylene terephthalate) concentrations in polyols on the characteristics of rigid polyurethane foams was investigated. The results showed that obtained rigid polyurethane foams were suitable for thermal insulation appliance. Also, the potential use of rapeseed oil as raw material combined with poly(ethylene terephthalate) to synthesize polyols with good compatibility with blowing agent was confirmed.

scholarly journals A Study on Making Rigid Polyurethane Foams from Vietnam Rubber Seed Oil-Based Polyol by Using Water as a Single Blowing Agent

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Nguyen Thi Thuy ◽  
Pham Ngoc Lan
Keyword(s):  
Cell Size ◽  
Cell Walls ◽  
Seed Oil ◽  
Polyurethane Foams ◽  
Dibutyltin Dilaurate ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Rigid Polyurethane Foams ◽  
Blowing Agent ◽  
Foaming Process

In this work, for making rigid polyurethane foams, only water was used to serve as a blowing agent. Vietnam rubber seed oil-based polyol was also used. Following our previous research results, water content was fixed at 4 wt.% and glycerol content at 3 wt.%, as compared to biopolyol. The effect of the NCO/OH ratio, main catalyst (dibutyltin dilaurate), cocatalyst (triethylamine), and surfactant content as well as the surfactants on performances of foams was investigated through compressive strength, density, cell size, and size distribution. A suitable formulation for making foam by using biopolyol made from rubber seed oil was established. In parallel with it, foam based on commercial polyol derived from petroleum was also manufactured. The characteristics of the foaming process were assessed. The mechanical properties, thermal behavior, water absorption, and dimensional stability of foams were evaluated. The cellular morphology study shows that the cells of foam based on biopolyol were closed and rather uniform; however, cell size was 3% bigger and cell walls were also a bit thicker. The results showed that the properties of foam based on biopolyol were similar to those of petrofoams. This result may open a possibility to replace petropolyol with renewable biopolyol in foam fabrication.

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