Wheat straw lignin as filler for rigid polyurethane foams on the basis of tall oil amide

Rigid polyurethane (PUR) foams with the apparent density in the range of 45-60 kg/m super(3) were produced from tall oil polyol (TOP) and organosolv wheat straw lignin as filler. PUR foams were filled with lignin in the amount of 0-6.3 wt %. Mechanical properties, dimensional stability, water absorp...

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Veröffentlicht in:Polimery 2014-01, Vol.59 (6), p.477-481
Hauptverfasser: Paberza, Aiga, Cabulis, Ugis, Arshanitsa, Alexander
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description Rigid polyurethane (PUR) foams with the apparent density in the range of 45-60 kg/m super(3) were produced from tall oil polyol (TOP) and organosolv wheat straw lignin as filler. PUR foams were filled with lignin in the amount of 0-6.3 wt %. Mechanical properties, dimensional stability, water absorption and thermal conductivity of prepared foams were investigated. The use of lignin increased the content of renewable materials in the end product, reaching together with TOP the value of 23.6 wt %. The viscosity of polyol system and foaming process parameters (cream time, gel time, tack-free time and full rise time) were determined. The viscosity of polyol system rose exponentially when concentration of lignin in the PUR foam was increased. The maximum value of compressive strength (0.35 MPa parallel to the foaming direction) was reached in the PUR sample where the concentration of lignin in foam was 1.2 wt %. It was concluded that wheat straw lignin can be used as a filler to obtain rigid PUR foams having the characteristics of thermal insulation material.Original Abstract: Stosujac poliol z oleju talowego (TOP) oraz lignine ze slomy pszenicznej jako napelniacz otrzymano sztywne pianki poliuretanowe (PUR) o gestosci pozomej 45-60 kg/m super(3). Wyznaczono wlasciwosCi mechaniczne, stabilnosc wymiarowa, chlonnosc wody oraz wspolczynnik przewodzenia ciepla przygotowanych materialow w zaleznosci od zawartosci ligniny (0-6,3 % mas.). Wprowadzenie ligniny spowodowalo zwiekszenie udziatu surowcow odnawialnych w koncowym produkcie, ktore razem z TOP osiagaja, 23,6 % mas. W ramach pracy wyznaczono lepkosc przedmieszki poliolowej oraz parametry technologiczne procesu spieniania (czas startu, czas zelowania, czas wzrostu, oraz czas suchego lica). Lepkosc przedmieszki poliolowej wzrastala wykladniczo wraz ze zwiekszaniem zawartosci ligniny. Najwieksza wytrzymalosc na sciskanie (0,35 MPa w kierunku rownoleglym do wzrostu pianki) otrzymano w przypadku pianki PUR o zawartosci ligniny 1,2 % mas. Stwierdzono, ze lignina ze slomy pszenicznej moze byc uzyta jako napelniacz w procesie otrzymywania sztywnych pianek PUR majacych cechy materialow termoizolacyjnych.
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PUR foams were filled with lignin in the amount of 0-6.3 wt %. Mechanical properties, dimensional stability, water absorption and thermal conductivity of prepared foams were investigated. The use of lignin increased the content of renewable materials in the end product, reaching together with TOP the value of 23.6 wt %. The viscosity of polyol system and foaming process parameters (cream time, gel time, tack-free time and full rise time) were determined. The viscosity of polyol system rose exponentially when concentration of lignin in the PUR foam was increased. The maximum value of compressive strength (0.35 MPa parallel to the foaming direction) was reached in the PUR sample where the concentration of lignin in foam was 1.2 wt %. It was concluded that wheat straw lignin can be used as a filler to obtain rigid PUR foams having the characteristics of thermal insulation material.Original Abstract: Stosujac poliol z oleju talowego (TOP) oraz lignine ze slomy pszenicznej jako napelniacz otrzymano sztywne pianki poliuretanowe (PUR) o gestosci pozomej 45-60 kg/m super(3). Wyznaczono wlasciwosCi mechaniczne, stabilnosc wymiarowa, chlonnosc wody oraz wspolczynnik przewodzenia ciepla przygotowanych materialow w zaleznosci od zawartosci ligniny (0-6,3 % mas.). Wprowadzenie ligniny spowodowalo zwiekszenie udziatu surowcow odnawialnych w koncowym produkcie, ktore razem z TOP osiagaja, 23,6 % mas. W ramach pracy wyznaczono lepkosc przedmieszki poliolowej oraz parametry technologiczne procesu spieniania (czas startu, czas zelowania, czas wzrostu, oraz czas suchego lica). Lepkosc przedmieszki poliolowej wzrastala wykladniczo wraz ze zwiekszaniem zawartosci ligniny. Najwieksza wytrzymalosc na sciskanie (0,35 MPa w kierunku rownoleglym do wzrostu pianki) otrzymano w przypadku pianki PUR o zawartosci ligniny 1,2 % mas. Stwierdzono, ze lignina ze slomy pszenicznej moze byc uzyta jako napelniacz w procesie otrzymywania sztywnych pianek PUR majacych cechy materialow termoizolacyjnych.</description><identifier>ISSN: 0032-2725</identifier><identifier>DOI: 10.14314/polimery.2014.477</identifier><language>pol</language><subject>Fillers ; Foaming ; Foams ; Polyols ; Polyurethane foam ; Polyurethane resins ; Straw ; Wheat</subject><ispartof>Polimery, 2014-01, Vol.59 (6), p.477-481</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Paberza, Aiga</creatorcontrib><creatorcontrib>Cabulis, Ugis</creatorcontrib><creatorcontrib>Arshanitsa, Alexander</creatorcontrib><title>Wheat straw lignin as filler for rigid polyurethane foams on the basis of tall oil amide</title><title>Polimery</title><description>Rigid polyurethane (PUR) foams with the apparent density in the range of 45-60 kg/m super(3) were produced from tall oil polyol (TOP) and organosolv wheat straw lignin as filler. PUR foams were filled with lignin in the amount of 0-6.3 wt %. Mechanical properties, dimensional stability, water absorption and thermal conductivity of prepared foams were investigated. The use of lignin increased the content of renewable materials in the end product, reaching together with TOP the value of 23.6 wt %. The viscosity of polyol system and foaming process parameters (cream time, gel time, tack-free time and full rise time) were determined. The viscosity of polyol system rose exponentially when concentration of lignin in the PUR foam was increased. The maximum value of compressive strength (0.35 MPa parallel to the foaming direction) was reached in the PUR sample where the concentration of lignin in foam was 1.2 wt %. It was concluded that wheat straw lignin can be used as a filler to obtain rigid PUR foams having the characteristics of thermal insulation material.Original Abstract: Stosujac poliol z oleju talowego (TOP) oraz lignine ze slomy pszenicznej jako napelniacz otrzymano sztywne pianki poliuretanowe (PUR) o gestosci pozomej 45-60 kg/m super(3). Wyznaczono wlasciwosCi mechaniczne, stabilnosc wymiarowa, chlonnosc wody oraz wspolczynnik przewodzenia ciepla przygotowanych materialow w zaleznosci od zawartosci ligniny (0-6,3 % mas.). Wprowadzenie ligniny spowodowalo zwiekszenie udziatu surowcow odnawialnych w koncowym produkcie, ktore razem z TOP osiagaja, 23,6 % mas. W ramach pracy wyznaczono lepkosc przedmieszki poliolowej oraz parametry technologiczne procesu spieniania (czas startu, czas zelowania, czas wzrostu, oraz czas suchego lica). Lepkosc przedmieszki poliolowej wzrastala wykladniczo wraz ze zwiekszaniem zawartosci ligniny. 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PUR foams were filled with lignin in the amount of 0-6.3 wt %. Mechanical properties, dimensional stability, water absorption and thermal conductivity of prepared foams were investigated. The use of lignin increased the content of renewable materials in the end product, reaching together with TOP the value of 23.6 wt %. The viscosity of polyol system and foaming process parameters (cream time, gel time, tack-free time and full rise time) were determined. The viscosity of polyol system rose exponentially when concentration of lignin in the PUR foam was increased. The maximum value of compressive strength (0.35 MPa parallel to the foaming direction) was reached in the PUR sample where the concentration of lignin in foam was 1.2 wt %. It was concluded that wheat straw lignin can be used as a filler to obtain rigid PUR foams having the characteristics of thermal insulation material.Original Abstract: Stosujac poliol z oleju talowego (TOP) oraz lignine ze slomy pszenicznej jako napelniacz otrzymano sztywne pianki poliuretanowe (PUR) o gestosci pozomej 45-60 kg/m super(3). Wyznaczono wlasciwosCi mechaniczne, stabilnosc wymiarowa, chlonnosc wody oraz wspolczynnik przewodzenia ciepla przygotowanych materialow w zaleznosci od zawartosci ligniny (0-6,3 % mas.). Wprowadzenie ligniny spowodowalo zwiekszenie udziatu surowcow odnawialnych w koncowym produkcie, ktore razem z TOP osiagaja, 23,6 % mas. W ramach pracy wyznaczono lepkosc przedmieszki poliolowej oraz parametry technologiczne procesu spieniania (czas startu, czas zelowania, czas wzrostu, oraz czas suchego lica). Lepkosc przedmieszki poliolowej wzrastala wykladniczo wraz ze zwiekszaniem zawartosci ligniny. Najwieksza wytrzymalosc na sciskanie (0,35 MPa w kierunku rownoleglym do wzrostu pianki) otrzymano w przypadku pianki PUR o zawartosci ligniny 1,2 % mas. Stwierdzono, ze lignina ze slomy pszenicznej moze byc uzyta jako napelniacz w procesie otrzymywania sztywnych pianek PUR majacych cechy materialow termoizolacyjnych.</abstract><doi>10.14314/polimery.2014.477</doi><tpages>5</tpages></addata></record>
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subjects Fillers
Foaming
Foams
Polyols
Polyurethane foam
Polyurethane resins
Straw
Wheat
title Wheat straw lignin as filler for rigid polyurethane foams on the basis of tall oil amide
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