Construction of a novel halogen-free and phosphorus-free and synergistic flame retardant system with low addition in simultaneously improving the flame retardancy, water resistance and mechanical properties for silicone rubber
Source abstract
Abstract
To solve the bottleneck problems of flame-retarding silicone rubber (SR), a halogen-free, phosphorus-free and synergistic flame retardant system was prepared by introducing hydrophobic natural product (Gum Arabic, GA) intercalated layered double hydroxide (H-GA@LDH) and multi-walled carbon nanotubes (MWCNT). Prominently, when the total amount of flame retardant is only 7 phr, SR/H-GA@LDH 6.0/MWCNT 1.0 can reach the limiting oxygen index (LOI) value of 29.4% and UL-94 V-0 rating with the flame retardant index of 2.06. And the LOI value of SR/H-GA@LDH 6.0/MWCNT 1.0 is decreased by only 1.3% compared with that of SR by 6.9% after water resistance tests. In addition, the peak heat release rate (pHRR) and total heat release rate (THR) of SR composites are decreased by 22.14% and 12.43%. Compared with pure SR, the tensile strength and elongation at break of SR-8 are increased by 115.63% and 23.85%. In this condition, an excellent balance for simultaneously improving flame retardancy, water resistance and mechanical properties has been achieved. Therefore, this paper has provided an effective strategy with halogen-free and phosphorus-free materials for achieving the goal of flame-retarding SR with high performance and breaking the limitation of traditional contaminative and toxic phosphorus-based or halogen-based flame retardants.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Flame retardant materials and properties · Silicone and Siloxane Chemistry · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
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