Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils
Presented research shows the results of a study on the synthesis and mechanical properties of materials obtained by crosslinking polyaddition bio-products with blocked isocyanate based on toluene diisocyanate (TDI) as curing agent. Bio-resins, polyaddition product of epoxidized soybean oil and bisph...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology
2019-07-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0009816&mi=cd |
| _version_ | 1818231080515272704 |
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| author | A. Sienkiewicz P. Czub |
| author_facet | A. Sienkiewicz P. Czub |
| author_sort | A. Sienkiewicz |
| collection | DOAJ |
| description | Presented research shows the results of a study on the synthesis and mechanical properties of materials obtained by crosslinking polyaddition bio-products with blocked isocyanate based on toluene diisocyanate (TDI) as curing agent. Bio-resins, polyaddition product of epoxidized soybean oil and bisphenol A or hydroxylated soybean oil and low molecular weight epoxy resin, were synthesized via modern and pro-ecological modification of the synthesis of epoxies, namely, the epoxy fusion process. The obtained polyaddition product contains free epoxy and hydroxyl groups, which are suitable for the curing purposes. Material cured with Desmodur BL 1265/MPA/X in the presence of organometallic or amine catalyst (respectively: Dabco T9 and Dabco 33-LV) is characterized by mechanical properties better than the composition crosslinked without the catalyst. Additionally, there is a possibility of the synthesis of two-layer materials by chemical bonding of two different compositions via the previously unused oxirane groups of the cured ESBO_BPA or SMEG_EPR products. |
| first_indexed | 2024-12-12T10:44:42Z |
| format | Article |
| id | doaj.art-62297c88736f4e689698a8812c76c5d3 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-12T10:44:42Z |
| publishDate | 2019-07-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-62297c88736f4e689698a8812c76c5d32022-12-22T00:26:56ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2019-07-0113764265510.3144/expresspolymlett.2019.54Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oilsA. SienkiewiczP. CzubPresented research shows the results of a study on the synthesis and mechanical properties of materials obtained by crosslinking polyaddition bio-products with blocked isocyanate based on toluene diisocyanate (TDI) as curing agent. Bio-resins, polyaddition product of epoxidized soybean oil and bisphenol A or hydroxylated soybean oil and low molecular weight epoxy resin, were synthesized via modern and pro-ecological modification of the synthesis of epoxies, namely, the epoxy fusion process. The obtained polyaddition product contains free epoxy and hydroxyl groups, which are suitable for the curing purposes. Material cured with Desmodur BL 1265/MPA/X in the presence of organometallic or amine catalyst (respectively: Dabco T9 and Dabco 33-LV) is characterized by mechanical properties better than the composition crosslinked without the catalyst. Additionally, there is a possibility of the synthesis of two-layer materials by chemical bonding of two different compositions via the previously unused oxirane groups of the cured ESBO_BPA or SMEG_EPR products.http://www.expresspolymlett.com/letolt.php?file=EPL-0009816&mi=cdBiopolymers, biocompositessoybean oilepoxy fusion processblocked isocyanatesepoxy resin |
| spellingShingle | A. Sienkiewicz P. Czub Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils eXPRESS Polymer Letters Biopolymers, biocomposites soybean oil epoxy fusion process blocked isocyanates epoxy resin |
| title | Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils |
| title_full | Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils |
| title_fullStr | Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils |
| title_full_unstemmed | Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils |
| title_short | Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils |
| title_sort | blocked isocyanates as alternative curing agents for epoxy polyurethane resins based on modified vegetable oils |
| topic | Biopolymers, biocomposites soybean oil epoxy fusion process blocked isocyanates epoxy resin |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0009816&mi=cd |
| work_keys_str_mv | AT asienkiewicz blockedisocyanatesasalternativecuringagentsforepoxypolyurethaneresinsbasedonmodifiedvegetableoils AT pczub blockedisocyanatesasalternativecuringagentsforepoxypolyurethaneresinsbasedonmodifiedvegetableoils |