Development of Polythiourethane from Dithiocarbonate Containing Functional Groups
碩士 === 淡江大學 === 化學學系碩士班 === 96 === A heterocyclic (thio-carbonate) containing has been synthesized from epoxy resin and carbon disulfide. Thio-containing polyurethane (PU) is obtained from an ring-opening reaction of this heterocyclic (thio-carbonate) with amino groups and it results in the thiols f...
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| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/19959530131784394234 |
| Summary: | 碩士 === 淡江大學 === 化學學系碩士班 === 96 === A heterocyclic (thio-carbonate) containing has been synthesized from epoxy resin and carbon disulfide. Thio-containing polyurethane (PU) is obtained from an ring-opening reaction of this heterocyclic (thio-carbonate) with amino groups and it results in the thiols formation. Thiese thiols will have sulfur-sulfur bond formation on the exposure of air at ambient temperature. Finally it becomes a cross-linked thio-PU with sulfur-sulfur bonds.
Due to the reactivity of heterocyclic (thio-carbonate) functional group toward to amino containing compound. Therefore, a trifuntional heterocyclic (thio-carbonate) is synthesized and characterized by spectrometric methods. It serves as a self-curing agent for aqueous-based PU. The physical, mechanical and thermal properties of these self-cured aqueous-base PU with this new curing agent are evaluated in this report.
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