Term
| According to published data (Richardson 2004), over thirty years ago, in the 1983 |
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Definition
| the volumetric production of plastics surpassed metal and ceramic combined. and continues to surpass |
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Term
| in the year 2006, in the United States, the plastic industry was employed __ with an average income of___ |
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Definition
| 1.2 million persons with an average income of $37,000 per year. |
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Term
| Typical applications for Plastics industry include: |
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Definition
Aerospace
Precision Engineering
Automotive Engineering
General Mechanical Engineering
Design of Technical Equipment
Construction Industry |
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Term
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Definition
| Thermosets, thermoplastics |
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Term
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Definition
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Term
| branch off of thermoplastics |
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Definition
Commodity Resins
Engineering Resins |
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Term
| what makes cermaic materials |
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Definition
| The mixture of metallic element light blue with five elements of carbon, nitrogen, oxygen, phosphorous and sulfurous. |
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Term
| what makes plastic materials |
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Definition
| Plastic materials in today technology are the mixture of mostly six elements, hydrogen, carbon, nitrogen, oxygen, fluorine, & silicon |
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Term
| Depending on the goal, the added materials (additive) can be an additive added as a |
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Definition
Modifier
Processing Aid
Reinforcements
Filler
Others |
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Term
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Definition
| are stabilizers that slowdown or stop oxidation of polymer. |
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Term
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Definition
| are additives that helps prevent breakdown by ozone gas in the atmosphere |
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Term
| Solar radiation of polymers may results in |
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Definition
| crazing, chalking, color changes, or loss of physical and chemical, electrical, or mechanical properties. |
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Term
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Definition
| The additive added to a polymer specifically to enhance a mechanical properties |
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Term
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Definition
Coupling agents
Curing agents
Flame retardants
Foaming/ Blowing agents
Impact modifiers |
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Term
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Definition
Plasticizers
Heat stabilizers
Lubricants
Ant blocking
Solvents |
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Term
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Definition
Long fibers
Short fibers
Others |
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Term
| Particulate reinforcement |
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Definition
Glass base particulate
Ceramic base particulate
Others |
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Term
|
Definition
Fibrous reinforcement
Flack reinforcement
Particulate reinforcement |
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Term
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Definition
| are an additive added to a plastics primarily to increase the bulk and reduce the cost. |
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Term
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Definition
Thermosetting hence are the plastics witch undergo the heat softening once.
Upon polymerization, they retain their form permanently. |
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Term
| divisions of thermosetting |
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Definition
| Thermosets, and elastomer |
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Term
| Over ___ percentage of the current plastics are carbon based plastics |
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Definition
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Term
| he five most common type of thermosetting matrix are: |
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Definition
| T Polyester, Phenolics, Epoxy, Polyimide, and Bismaleimide |
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Term
| Disadvantages of polyurethane |
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Definition
Poor thermal capability
2. Toxic (isocyanates are used)
3. Poor weatherability
4. Subject to attack by solvents |
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Term
| Disadvantages of Phenolics |
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Definition
1. Need fillers for moldings
2. Poor resistance to bases and oxidizers
3. Volatiles released during cure (a condensation polymer)
4. Dark color (due to oxidation discoloration) |
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Term
|
Definition
1. Comparatively low cost
2. Suitable for use at temperatures to 400°F (205°C)
3. Excellent solvent resistance
4. Rigid
5. Good compressive strength
6. High resistively to abrasions
7. Self-extinguishing
8. Very good electrical characteristics |
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Term
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Definition
| A thermosetting resins made by reacting pyromellitic diahydride with aromatic diamines. This polymer is characterized by rings of four carbon atoms tightly bounded together. |
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Term
| Disadvantage of Polyimides |
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Definition
Difficult to process
Expansive
Limited Structural usage
Limited electrical usage |
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Term
| Disadvantages of Urea-Formaldehyde |
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Definition
1. Must be filled for successful molding
2. Long-term oxidation resistance is poor
3. Attacked by strong acids and bases
4. Uncured, partially polymerized plastics and foams degas |
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Term
| Advantages of Urea-Formaldehyde |
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Definition
1. Good hardness and scratch resistance
2. Comparatively low cost
3. Wide color range
4. Self-extinguishing
5. Good solvent resistance |
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Term
| Disadvantages of Melamine-Formaldehyde |
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Definition
1. Must be filled for successful molding
2. Poor long-term oxidation resistance
3. Subject to attack by strong acids and bases |
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Term
| Advantages of Melamine-Formaldehyde |
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Definition
1. Good hardness & scratch resistance
2. Comparatively low cost
3. Wide color range
4. Self-extinguishing
5. Good solvent resistance |
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Term
| Two Broad Categories of epoxy |
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Definition
250 oF curing temperature with 175 oF Service Temperature
350 oF curing temperature with 275 oF Service temperature. |
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Term
|
Definition
1. Wide range of cure conditions, from room temperature to 350°F (178°C)
2. No volatiles formed during cure
3. Excellent adhesion
4. Can be cross-linked with other materials
5. Suitable for all thermosetting processing methods |
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Term
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Definition
1. Poor oxidative stability; some moisture sensitivity
2. Thermal stability limited to 350-450°F(178-232°C)
3. Many grades are expensive |
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Term
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Definition
are defined as solid materials of any of a large and varied group of substances consisting wholly or in part of combination of
carbon/silicon
with
oxygen, nitrogen, hydrogen and other organic or inorganic elements. |
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Term
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Definition
are defined as materials of any of a large and varied group of substances consisting wholly or in part of combination of
carbon/silicon
with
oxygen, nitrogen, hydrogen and other organic or inorganic elements |
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Term
| Polymeric (plastic) materials |
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Definition
Any of various natural or synthetic materials chemically created from organic substances, which are not conductive of:
Heat and
electricity |
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Term
|
Definition
Polyethylene
Polypropylene
Polystyrene
Polycarbonate
Nylon |
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Term
| Behavior of Polymeric Material |
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Definition
Do not conduct heat
Do not conduct Electricity
Have a light weight
Burn or degrade up on heating |
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Term
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Definition
| Polyethylene, a typical of polymer is the result of the attachment of a ethylene vinyl, a monomer to produce a polymer known as polyethylene. |
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Term
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Definition
| Nylon a well known plastic was discovered by the Du-Pont lab in New York and London at the same time. |
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Term
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Definition
| Thermoplastics is the mixture of a primary and secondary bonds. |
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Term
|
Definition
The polymerization of thermoplastics involve with three steps:
Initiation, Start
Propagation, Growth
Termination, stop |
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Term
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Definition
| Stereoisomerism is refers to the arrangement of radicals within a given molecule |
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Term
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Definition
| Atactic arrangement is the random arrangement of monomer within the structure of a polymer |
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Term
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Definition
| Syndiotactic arrangement is a regular Alternation of the radical within a molecular structure |
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Term
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Definition
| Isotactic is the placement of the monomer with in the structure of polymer is the same arrangement. |
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