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MAT 204
Exam #1 (CLOSED BOOK)
Feb. 28, 2012
9:20 AM room 203 WH
WRITE NAME ON PAGE 2!
Table I: Various monomers to be used for questions 1-10. Please tear-off!
CH
CH2
CH
CH2
CH2
H2C
CH
CH
Cl
Cl
Cl
CH2
CH
CH2
CH
O
O
O
O
O
CH
CH2
O
CH2OH
CH2OH
OH
HO
OH
CHOH
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #3
Due Monday February 3, 2014
1) Write down the reaction scheme for the polymerization of propylene that is initiated
by the thermolysis of benzoyl peroxide.
This is a chain gro
NAME:
MAT 204 Processing and Properties of Polymeric Materials
FINAL EXAM (CLOSED BOOK/NOTEBOOK)
4:00 PM Sunday, May 6, 2012
Neville Auditorium #2
PART I (25 points): True or False To avoid confusion please state your reasoning.
For branched alkanes, the
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #6
Due Wednesday March 19, 2015
(1)
The uniaxial tensile yield strength of PVC at a strain rate of 10-3 1/s is 51.5
MPa at 23 C and 33.9 MPa at 50 C. At a strain rate of 10-1 1/s
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #3
Due Monday February 9, 2015
1) Write down the reaction scheme for the polymerization of styrene that is initiated by
the thermolysis of benzoyl peroxide.
Step 1: Initiation
St
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #5
Due Wednesday, February 19, 2014
1) Find the percent change in viscosity per degree change in temperature for
polystyrene (Tg = 97C) at the following temperatures:
a. 160C (us
MAT 204 Processing and Properties of Polymeric Materials
Homework Assignment #4
Due Wednesday February 12, 2014
1)
For a PS molecule of 520,000 g/mole molecular weight calculate:
a)
b)
c)
d)
Contour length (freely jointed)
Contour length (fixed angles)
Ro
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #5
Due Monday, March 2, 2015
1)
Define the term viscoelasticity. What is a linear viscoelastic response?
Linear viscoelasticity is time dependent elasticity.
A linear viscoelasti
NAME:
MAT 204 Processing and Properties of Polymeric Materials
HMWK #11 (Optional Assignment)
Due Friday, May 1, 2015
PART VI (50 points): Plastic Air Intake Manifold
Figure 1: Finite element model of a plastic air intake manifold.
INTRODUCTION
The world
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #10
Due Friday, April1 20, 2015
1)
Sketch the features of a single screw extruder. List and discuss the
parameters that affect the volumetric output for the open discharge case.
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Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #7
Due Friday, March 27, 2015
1)
Describe the difference between thermal stability and flame retardancy.
Both thermal stability and flame retardancy involve high temperatures and
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #9
Due Friday, April 10, 2015
1)
Pultruded Rods, reinforced with aligned continuous fibers, are produced
as follows (percentages are given as fiber volume fractions):
(a) 50% E-g
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #8
Due Friday, April 3, 2015
1)
Compare and contrasts the strengths and limitations of commodity
thermoplastics versus engineering thermoplastics.
Commodity
Cheap
Melts at low te
MAT 204 Processing and Properties of Polymeric Materials
Homework Assignment #4
Due Wednesday, February 18, 2015
1)
For a PP molecule of 420,000 g/mole molecular weight calculate:
a)
b)
c)
d)
Contour length (freely jointed)
Contour length (fixed angles)
R
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #2
Due Monday, February 2, 2015
1) True or False: The IR spectrum below is for polystyrene. Explain your reasoning.
False: REAL PS Spectrum looks like:
Note that the peak for aro
Processing and Properties of Polymeric Materials
MAT 204 Homework Assignment #2
Due Monday, January 27, 2014
1) True or False: The IR spectrum below is for polystyrene. Explain your reasoning.
False: REAL PS Spectrum looks like:
Note that the peak for aro
NAME:
MAT 204 (SPRING 2012)
Processing and Properties of Polymeric Materials
Exam #2
Due, April 10, 2012
Take Home - NO Help!
1) [20 pts.] An unknown polymer (Tg=145C) exhibits a melt viscosity in shear of
10,000 Pa-s at 240C. At what temperature is the m
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