Polymer

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Cole L and Jenna E

Szerző: Nancy Calamanco

JOINTS

Szerző: Ahmad Hakim

МДК

Szerző: Владислав Сергеевич Трофимов

Environmental Justice

Szerző: ISABELLA BARTOK

Polymer

Enviromental Impact

Plastics pollute and harm animals and take a long time to disappear.

Avoid single-use plastics like drinking straws. If you go shopping, don't forget to bring a cloth bag. Buy more bulk foods and less packaged products.

Plastic types

Elastomers

Thermosettings

Thermoplastics

Classification based on

Its molecular forces: thermoplastics, thermosettings and elastomers

Its structure: linear, branched chain and cross-linked polymers

Its origin: natual, semi syntetic and syntetic polymers

Polymer Proccessing.

Some of the most common printing materials for fused deposition modeling are polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET), and thermoplastic polyurethane (TPU).

3D Printing: The polymer 3D printing process works by depositing a polymer in a directed fashion to form a completed part, generally through layer by layer deposition.

Machining Plastics: turning, milling and grinding.

Forming plastics: Extrusion, Injection Moulding, Compression moulding, Blow moulding and Vacuum

General properties: The mechanical resistance, the elasticity of rubbers, the glass transition temperature of amorphous plastics or the melting temperature of fibers and semi-crystalline materials, are due to their high molecular weight.

Definition:It is a substance composed of large molecules, or macromolecules formed by the union through covalent bonds of one or more simple units called monomers.