Composites Test 1

-Combination of at least two components, a matrix/ reinforcements. 

-This combination creates a material that has properties greater than or equal to the sum of the parts.

-Isotropic: Strength is the same in all directions. 

-Anitropic: Strength is greatest in a certain direction.

-Natural: Trees

-Synthetic: Plie wood, Carbon Fibers (man made)

Fiberous: Reinforced Plastics 

Laminar: Composed of layers or piles of matrix

Particulate: Particles dispersed in the matrix

-Binder to the reinforcer 

-Transfer loads across the structure

-Protects the reinforcement from outside environment

-Dampens

Polyermic 

Metallic 

Ceramic 

Carbon 

Processablility

Economics

Design criteria 

Bond well with reinforcements 

Potrollium 

Natural/ Agricultural 

Coal

Starting material that is changed into a new material by means of further processing and use of additives.

Ceramic Composites: Very brittle, high temperature resistant material. Can be the matrix only but in many cases is both the matrix and the reinforcer.

Melamine-Phenolic: Produced by combining a one-stage phenolic with melamine resin, not used for large volume applications and are generally produced in black or dark colors.  

Co-polymer: The combination of two or more monomers 

Alloy: The combination of two or more basic polymers into a mechanical mix

True 

-Ease of repairability 

-Improved impact strength 

-Recyclablilty 

-No need to refrigerate

-Much quicker processing time 

-Overall lower high temperature properties 

-Still some problems with fiber adherence 

-Higher material cost

-Lack of tacticity/ flexibility in prepreg from

-Higher temperature properties 

-Lower material cost 

-Good fiber adherence 

-Better tacticity/ flexibility  

-Lower impact strength 

-More difficult to repair 

-Have to refrigerate 

-Longer processing time 

-Hard to recycle 

-Solvent system 

-Hot melt

-Powder Technology 

-Co-mingled Fiber