Journal
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
Volume 57, Issue 9, Pages 884-892Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/03602559.2017.1354251
Keywords
Dimethyl methylphosphonate; flame retardancy; mechanical properties; rigid polyurethane foams; SiO2 nanospheres; GO hybrid
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Funding
- National Natural Science Foundation of China [U1205114]
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Halogen-free flame-retardant rigid polyurethane foams were prepared using the combination of SiO2 nanospheres/graphene oxide hybrid and a phosphorus-containing flame retardant, dimethyl methylphosphonate. The flame retardancy, mechanical, and thermal properties of flame-retardant rigid polyurethane foams containing dimethyl methylphosphonate and SiO2 nanospheres/graphene oxide were investigated. The results demonstrated that the combination of dimethyl methylphosphonate and SiO2 nanospheres/graphene oxide enhanced flame retardant and mechanical properties of rigid polyurethane foam greatly compared with pure rigid polyurethane foam and dimethyl methylphosphonate-modified foam. Morphological study indicated that the partial substitution of dimethyl methylphosphonate with SiO2 nanospheres/graphene oxide led to smaller cell sizes and more uniform cell sizes of dimethyl methylphosphonate-modified rigid polyurethane foams.
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