idik
Medium Density fiber board is 48 lb. board. High Density Fiberboard is 55 lb. board. Low Density Fiberboard is 38 lb. board. Ultra Light Fiberboard is 33 lb. board.
I think that mdf mean, Medium Density Fiber-Board
Usually because of moisture, or severe cycles of temperature change.
Most likely not. If you want to be sure, check the type of glue used in its production.
There are three kinds of fiberboard--low-density, medium-density and high-density. All three are made by mixing powdered wood fiber and adhesive, then pressing them in a hydraulic press. Low-density fiberboard is made by compressing a foot-thick pile of fiber to 1/2" thickness. Medium-density fiberboard compresses a foot of fiber to 1/4" thickness, and high-density fiberboard compresses a foot of fiber to 1/8" thickness. Low-density fiberboard is usually coated with asphalt on one side and used as cheap sheathing under siding on houses. Medium-density fiberboard is used for a multitude of purposes, and high-density fiberboard is used for laminate flooring.
The formula to calculate the density of cement fiber boards is: Density = Mass / Volume Measure the mass (weight) of the board, then calculate the volume by multiplying the length, width, and thickness of the board. Finally, divide the mass by the volume to get the density.
I think you mean "High Density"?
which fiber has highest density ?
No. It's made from hard or softwood fibres being squashed together with wax and resin.
Well from a construction standpoint...Particle board (a ply wood made from many other pieces of wood glued together) or MDF ((medium density fiber)board) again made of almost the same thing, a bunch of fibers glued together. If your not seeing the pattern here give up now ; p
Optic Fiber was invented in 1955
Multimode fiber optic cable at 850nm