作业大全
阿酋湾-娱乐男明星人气排行榜投票
习题集
(Collection of Questions)
Chapter 1
–
Introduction to Polymeric
Materials
1. Many polymers
occur in nature. Name any two naturally occurring
polymers.
在自然界中许多聚合物存在。写出任何两种天然高分子材料。
2. What will happen when we begin
heating each of the polymers below?
给以下列聚合物加热将会发生什么现象
a) A thermosetting (polymer).
热固性塑料
b) A
thermoplastic (polymer).
热塑性材料
3. Name any
two properties that you may look for in describing
a polymer.
写出你能描述的聚合物并写出的两种的性质
4. Describe what is meant by the term
描述“聚合物”的含义是什么
5. Briefly explain the difference in
molecular chemistry between silicone polymer and
other polymeric materials.
简
要解释有机硅聚合物和其它高分子材料分子间的化学反应的不同。
Chapter
2
—
Plastics
1.
What is metallocene PE? And what are the
differences among metallocene PE,
HDPE
and LLDPE?
茂金属聚乙烯是什么
?
茂金属聚乙烯、高密度聚乙烯
(HDPE)
和线性低密
度聚乙烯
(LLDPE)
有什么区别吗？
2. How
many types of conformations do the polypropylene
have?
聚丙烯的构相有多少种？分别写出
3. What are the main properties of PS?
When compared with PS, what advantage does
ABS have?
PS
的主要性能
有哪些？与
PS
相比
ABS
有哪些优点
?
4. Define
Polyvinyls, PS, PP, HDPE, chemical structure.
1
写出
聚乙烯树脂、
PS
、
PP
、
HDPE
化学结构
5. Compare the density PVC, PVB, PS,
and PVDC which is higher/lower than PP.
比较
PVC
、
PVB
、
PS
、聚偏二氯乙烯密度的高低。
< br>
6. Compare the density of HDPE,
LDPE, UHMWPE, LLDPE
to PP?
比较
HDPE, LDPE, UHMWPE, LLDPE<
/p>
分别与
PP
的密度的高低
7. What is the tensile strength of
PP
with
0%, 30% glass fibers? What is the
tensile modulus?
PP
中
含玻璃纤维
0%
、
30%
的抗拉强度分别是多少？
< br>拉伸模量是多少
?
9.
Which
of
the
following
are
thermoplastics:
hard
rubber,
Bakelite,
PVC,
polystyrene,
polyethylene?
如下内容中的哪些是热塑性塑料
:
硬橡
胶、胶木、聚氯乙烯、聚苯乙烯
、聚乙烯
10. Which of the
following are thermoset plastics: Melamine
dishware, Bakelite, hard
rubber?
如下内容中的哪些是热固性塑料
:
三聚氰胺餐具、电
木、硬橡胶
?
11. What
is the principal structural difference between
LDPE and HDPE?
HDPE
与
< br>LDPE
的主要结构差异是什么？
12. Which has the higher value for a
specific polymer with both amorphous and
crystalline regions: Tg or Tm?
< br>具有一定特性的无定形聚合物和结晶聚合物，哪一种有较高的
Tg
或者
Tm
？
13. Which is the faster reaction: step
reaction or chain reaction polymerization?
聚合反应和连锁反应哪一种反应更快
?
14.
Write down
the formulations of epoxy resin.
写出环氧树脂的分子式
15.
List the
main applications of epoxy plastics.
列出
环氧塑料的主要应用领域
16.
What are the
main processing methods of thermosetting plastics?
2
热固性塑料有哪些处理方法？
17.
Compared
with thermoplastics, what are the advantage and
disadvantage of
thermosetting plastics?
相比之下
,
热塑性塑料、热固性塑料的
有利和不利的地方有哪些
?
18.
What are
meant by A-stage and B-stage phenolics?
A
阶酚醛和
B
阶酚醛的意思是？
19.
What are the characteristics and
application categories of amino plastics
氨基模塑料有什么特点，及其应用范畴？
20.
List the
main applications of unsaturated polyester.
列出不饱和聚酯的主要应用领域
21.
List the
properties of glass fiber (GF) reinforced
unsaturated polyester and GF
reinforced
epoxy plastics.
列出玻璃纤维增强不饱和聚酯和玻璃纤维增强环氧塑料的性能
22.
Write down
the chemical structure of PET?
写下
PET
的化学结构
23.
What are the
structure characteristics of PTFE? Why it has good
auto-lubricating
property?
聚四氟乙烯的结构特征是什么？为什么它具有良好的自润滑性？
24.
What are the
main characteristics of Nylon families.
尼龙系列有哪些主要特点
25.
Compare the
properties of Nylon with POM, and find out their
potential
application fields.
比较
POM
和尼龙的性质及其应用领域
26.
Why does PPS show an excellent heat
resistance?
PPS
显示出优良的耐热性的原因是？
27.
List the
main applications of PPS.
3
写出
P
PS
的主要应用范畴
Chapter
3 Elastomers
一、简述题
1.
Briefly
explain the mechanism of elasticity of rubbers?
简要解释弹性橡胶的原理
2.
Compare
the structural difference between natural rubber
and synthetic
polyisoprene.
比较天然橡胶和合成
聚异戊二烯
3.
Name the
most important three commercial rubbers and
explain why?
写下三种重要的工业（商业？）橡胶，并解释原因
4.
Give
three examples of the application of rubber in
industry.
列举出三种工业上应用的橡胶
5.
Compare
the structure and properties between SBR and SBS.
从结构和性质两方面比较
SBS
、
SBR
。
6.
What are
specialized rubbers? Explain the structure-
properties relationship.
什么是特种橡胶？写出其结构与性质的关系
7.
Give the
advantages and disadvantages of thermoplastic
rubbers.
写出热塑性橡胶的好坏
8.
How to
choose a rubber according to given requirements.
根据给定的要求如何选择一个橡胶？
9.
Explain
the function of all kind of additives in rubber,
and name at least four
common
additives.
解释各种添加剂在橡胶中的作用，写出至少四个常用添加剂
10.
Please give
the typical procedure of preparing sulphur
vulcanized rubbers.
写出典型的硫化橡胶的硫化工序
11.
聚乙烯和聚丙烯为通用塑料，但它们的共聚物却可以成
为橡胶，为什么？
12.
举例说明热塑性弹性体的弹性原理。
13.
简述橡胶的加工工艺过程。
14.
简述橡胶作为材料的基本特点。
4