Our
company takes advantage of the outstanding characteristics of
butyl rubber such as gas barrier, Acid & Alkali resistance,
and chemical solvents, etc. to manufacture into bottle stoppers
reserved for medical applications. In regards to our contributions
in the aspect of national defense, our company products play
a major role in military packaging medicine and medical equipments
since logistic medical supports are essential for wars. In addition,
our company is the sole manufacturer for this type of product
in Taiwan, which makes our role even more significant. Our development
objective in the future will be more R&D in butyl rubber
products based on national defense and packaging medicine.
The followings are the directions of R&D for the future:
|
| |
| A.
Main focus： |
| a. |
Research
and development for functional nanobutyl rubber |
| b. |
Technology
in nanobutyl rubber coating |
| |
|
| B.
Objective： |
| Improving
the basic property of the traditional rubber to enhance its
functional ability and added values. |
| |
|
| C.
Technology development： |
| a. |
Emulsion blending |
| |
This
method uses emulsion blending to interact with the non-uniformed
polymerization in liquid phase, which is to disperse the IIR
and modified clay into IIR by using emulsion blending method.
(As shown in the following diagram) |
| |
 |
| |
|
| b. |
Solution
blending： |
| |
This
method takes advantage of the compatibility of solvent and clay
and IIR to dissolve the modified organic clay in the solution
and allows an ample period of agitation. Then, eliminates and
heat dry the solution to obtain IIR/modified clay nanocomposite.
|
| |
|
| D. |
Coating
technology for nanobutyl rubber :
|
| |
To investigate
the adhension and compatibility of emulsified butyl rubber coating
on general polymers. |
| |
|
| E. |
Nanobutyl
rubber to be developed
: |
| |
|
| a. |
Butyl
nanocomposites： |
| |
National
Defense Applications: chemical protective gloves, gas mask,
chemical protective shoes, inner tire, chemical protective clothing.
Commercial Applications: coating for inner rubber lining of
tennis balls |
| |
|
| |
Characteristics:
Increase oxygen barrier and mechanical property, as shown in
Table 1 and Table 2 of the following. |
| |
Comparisons
in gas barrier between butyl rubber for medical applications
and nanobutyl rubber ( Table 1 )
|
| |
|
Rubber
Types
|
Silicone
Rubber
|
NR
|
Butyl
Rubber
|
Nanobutyl
rubber
|
Water
vapor permeability
(gm-mm/m2 -day
at 23℃)
|
4.5
|
80
|
2.5
|
0.1
|
Oxygen
permeability
(cc-mm/m2-day-atm0%
RH and 23℃)
|
10,000
|
2,000
|
100
|
4.5
|
|
| |
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|
| |
Comparisons
of results between filler of clay in general and nanobutyl
rubber filler of modified clay ( Table 2 )
|
| |
|
Rubber
Types
|
Butyl
rubber
(filler
of clay in general)
|
Nano-butyl
rubber
(filler
of 10% modified clay)
|
|
Shore
A hardness
|
33
|
39
|
|
300% elongation
stress(MPa)
|
0.9
|
1.2
|
|
Tensile
stress(MPa)
|
7
|
15
|
|
| |
|
| |
|
Matrix
|
Nature
rubber
|
Butyl
rubber
|
Nano butyl
rubber
|
|
Time of preserving
from mustard (min)
|
90
|
240
|
expecting
more than 300 |
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