Study on Melamine Formaldehyde/Polyvinyl Alcohol Blend Fiber by Electrospinning

Abstract

Melamine formaldehyde (MF) resin and its derivatives are always considered to be excellent flame retardant material, which has wide application in the flame retardant fabric, high temperature insulating filter materials, etc. However, less research on electro-spinning of melamine fiber has been reported, recently. In the study, the molar ratio, condensation polymerization temperature of formaldehyde and melamine, and the law of effect in different solid content ratio of melamine formaldehyde/polyvinyl alcohol on the electro-spinning were studied. The results showed that the best conditions for spinning were that formaldehyde and melamine molar ratio was 1:1.7, the reaction temperature was 80°C, and the MF-PVA blending solid content ratio was 1:1, meanwhile the morphology of Electron microscopy indicated the good uniformity of the fiber. The fiber presents good flame retardant property in conditions of MF-PVA blending solution viscosity 155mPa ́s, limit oxygen index 33.2%.

Synthesis of spinnable melamine formaldehyde resin prepolymer using ionic liquid and performance regulation of melamine fibers

“…The limiting oxygen index (LOI) is a direct indicator of the ability of the fiber (or mixture) to extinguish itself. The LOI of the MF fiber obtained by the optimal conditions is 34.6% and its fire‐retardant properties is better than MF/PVA composite fibers 14 . Because of the excellent fire‐retardant properties of MF fiber, it can be used in the field of fireproof materials and industrial protection involving fire and thermal insulation 18 …”

“…Polyvinyl alcohol (PVA) was the most widely used fiber‐forming polymer 11–13 . For example, Li et al 14 studied the electro‐spinning of MF/PVA composite fibers and obtained the optimal spinning conditions. Yu et al 15 obtained MF/PVA composite fibers with different reaction degrees by wet spinning, and the results showed that the best overall performance of the fibers was achieved when MF resin reacted for 12 h. Xu et al 16 prepared MF/PVA composite fibers with different phase structures and properties, and they found that when the miscibility index of MF resin was 1.60, the obtained fibers had a sea‐island phase structure, which greatly impacted the mechanical properties of the fibers.…”