Polymer Basics
What does polymer mean?
Many units
What does amorphous translate to?
"Morphous" structure
Without structure
What is the difference between a blend and a copolymer?
Blend is physical combining and copolymer is a chemical combining
What type of plastics does CPS not sell?
Thermoset
Name a polymer that is not plastic
DNA, protein, or cellulose
Which materials are typically transparent?
Amorphous
Name a common blend and a common copolymer
B: PC/PBT, PC/ABS
C: PP, POM
Although we do not make our own materials what are we able to do?
Blend materials
What are the two main types of polymerization?
Addition & condensation
Which amorphous material(s) are not transparent?
ABS, ASA, HIPS, mPPE
Adding glass to a material increases what properties and typically decreased what properties?
Increases: stiffness & strength
Decreases: elongation & impact
What is CPS' house tradename for materials? What do we call materials that are sustainable/recycled within the same tradename line?
CP Pryme & CP Pryme ECO
What are the two types of thermoplastics?
1. Semi-crystalline
2. Amorphous
What type of material would you suggest if you needed better chemical resistance?
Semi-crystalline
What is different between long glass fiber compared to standard glass?
LGF maintains (or improves) impact compared to standard glass
Which material do we sell more of: ULTEM PEI or Vydyne PA 6/6?
Vydyne PA 6/6
What are the three things that determine a plastic's characteristics/performance?
1. Chemical composition
2. Alignment of chains
3. Shape of chains
What are the typical shrinkage ranges for amorphous and semi-crystalline materials?
-Amorphous: 0.3-0.7% or 0.003-0.007 in/in
-SC: 1-2% or 0.010-0.020 in/in
Name 3 common additives we use
Anti-microbials, anti-slips, anti-stats, CFAs, nucleating agents, UV stabilizers, HS
1. APM
2. ENV
3. Elaston
4. LG Chem
5. SHPP
6. SYQ