| abstract |
The invention relates to a flame retardant filter paper. The proportions by weight are: 70-80 parts of pulp, 3-4 parts of modified bio-based fibers, 5-6 parts of flexible fibers, and a dispersant ≤ 0.5 parts; modified bio-based fibers The preparation method is as follows: carbonizing the biological fiber, soaking it in an alkaline solution, washing to neutrality, drying, grinding into powder, mixing with glass fiber particles in equal proportions, adding a coupling agent, and dispersing in a superheated steam environment; The effect is: good flame retardancy; good filtration performance and strength. |