Lignosulfonate/APP IFR and its flame retardancy in lignosulfonate-based rigid polyurethane foams
نویسندگان
چکیده
منابع مشابه
Characterization of Thermal and Mechanical Properties of Lignosulfonate- and Hydrolyzed Lignosulfonate- based Polyurethane Foams
Lignosulfonate and lignosulfonate hydrolyzed under alkaline conditions were used as the polyol components in polyurethane foam formulations. Although the treatment increased hydroxyl group abundance, it did not improve the applicability of hydrolyzed lignosulfonate in polyurethane foam. Thus, the use of original lignosulfonate yielded foams of thermal stability and mechanical properties compara...
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The rigid polyurethane foams (RPUFs) have been fabricated from high functional crude 4,4’-di-phenylmethane diisocyanate (CMDI) and polypropylene glycols (PPGs) for a wide range of surfactant concentration with an environmently friendly blowing agent (HFC 365mfc). Cream time, gel time, and tack-free time increased with the addition of surfactant. Foam density decreased rapidly to a minimum at 0....
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Fluorescent and flame-retardant two-component waterborne polyurethane coatings were synthesized using 1,5-dihydroxy naphthalene, a halogen-free polyphosphate and a hydrophilic curing agent, and their properties were systematically characterized. The average particle sizes and zeta potential values were below 170 nm and −30 mV. Meanwhile, the multifunctional two-component waterborne polyurethane...
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Introduction. Polybrominated diphenyl ethers (PBDEs) are manufactured as additive flame retardants in the production of polyurethane foams, textiles and plastics. PBDEs are persistent, lipophilic compounds that bioaccumulate through to the highest levels of the food chain (e.g., Lindberg et al., 2004). Recent reports have demonstrated that avian populations are subject to PBDE bioaccumulation b...
متن کاملApplications of Cellulose Nanowhiskers and Lignin In Preparation Of Rigid Polyurethane Nanocomposite Foams
Lignin is the second most abundant biopolymer on Earth, right after cellulose, with a highly complex chemical structure that hinders its possible utilizations. As a consequence, it is mostly burned as an inexpensive resource, generating green electricity or heat that in turn can be used for the deconstruction of biomass itself. Applications that utilize lignin in different manners are of great ...
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ژورنال
عنوان ژورنال: Journal of Wood Science
سال: 2018
ISSN: 1435-0211,1611-4663
DOI: 10.1007/s10086-018-1701-4