Document Type

Article

Publication Date

4-17-2024

Abstract

In today's world, the idea is to synthesize bio-based polyurethane goods, which reduces reliance on petroleum-based products. As a result, we produced polyol from hemp seed oil (HSO) and evaluated it using FTIR, hydroxyl value, and acid value. Polyol is successfully synthesized and combined with additional ingredients such as catalysts, blowing agents, hardeners, and flame-retardant chemicals to produce stiff polyurethane foams. The focus of this research was to synthesize high-quality flame-retardant rigid polyurethane foams (RPUF) through the addition of flame retardants. Within this line, the majority of the RPUF presented a closed-cell content greater than 65%. Also, a considerable improvement in flame retardancy was observed as the neat HSO-based RPUF had a burning time of 110 seconds and a weight loss of 82%. Yet, the addition of 10 wt% of triethyl phosphate (TEP) reduced to 19 seconds and 5%, respectively. The addition of other two flame retardants, dimethyl methyl phosphate (DMMP) and expandable graphite (EG), also showed similar trends with flame retardancy and mechanical properties. As a result, our research on the manufacture of biobased RPUFs was successful.

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