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MMT and triphenyl phosphite ester TPPI synergetic fire retardant effect on PLA composites

MMT and triphenyl phosphite ester TPPi synergetic fire retardant effect of PLA composite, MMT and triphenyl phosphite esters (TPPi) when synergy effects on mechanical properties and flame retardance of PLA composite. Experimental results show that, when MMT when the dosage (PLA and MMT mass ratio of 99%1), TPPi effectively improve the PLA composite oxygen index when you add only 0-5% TPPi, PLA composite limiting oxygen index reached 31.2%, with the increase of TPPi added, PLA composite oxygen index gradually increases. By comparison can be well illustrated, MMT and triphenyl phosphite ester TPPi PLA have synergetic fire retardant effect. This is because in the TPPi burns to form phosphoric acid, phosphoric acid condensation of poly-phosphate glass covering, phosphorus flame retardant role into full play. But on the other hand, carbonized layer is formed during combustion of MMT, this carbonization can block both heat and oxygen into and poly phosphate effectively and uniformly covered in composite systems. MMT and triphenyl phosphite ester TPPI synergetic fire retardant effect on PLA composites