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At present , the people of the whole country are mobilizing together to fight against the new coronavirus, and we are in a critical period.
We believe that if we strengthen our confidence and take appropriate measures, we will definitely win the national battle against the new coronavirus
.
target
In this battle, we saw that polymer materials played a very important role
.
In this battle, we saw that polymer materials played a very important role
.
1.
Medical masks are mainly made of non-woven fabrics made of polymer materials, taking common medical masks as an example
.
In the national standard GB/T 32610, medical masks should be at least 3 layers, which is what we call SMS (2 layers of S layers and 1 layer of M layers).
Currently, the highest number of layers in China is 5 layers, namely SMMMS (2 layers S-layer and 3-layer M-layer)
.
The S in it represents the spunbond layer (Spunbond), and its fiber diameter is relatively thick, about 20 microns (μm).
.
At present, these non-woven materials are mainly made of polypropylene, a common polymer material.
Of course, different layers have different requirements for polypropylene
.
At present, these non-woven materials are mainly made of polypropylene, a common polymer material.
In addition, the disposable protective clothing is also made of non-woven fabrics, and the requirements are similar to the non-woven materials of medical masks
.
2.
Protective goggles and face shield
Protective goggles and face shield
In the case of a relatively high level of protection, protective goggles and masks are required
.
In the case of a relatively high level of protection, protective goggles and masks are required
.
In our understanding, the lens is probably glass
.
But in fact, almost all lenses, including spectacle lenses, are made of polymer materials
.
The most common ones are PC, PMMA, etc.
The polymer material lens is light, not fragile, easy to form, high efficiency, and can be made into a special-shaped structure
.
3.
Infusion and injection molding supplies
Infusion and injection molding supplies
At present, almost all of the disposable infusion sets and injection needles we use are made of polymer materials
.
Infusion tubes, which used to be mainly made of PVC materials, are now a considerable part of TPE materials
.
Another large amount is the injection needle, mainly PVC and polypropylene
.
Fourth, drug packaging
Fourth, drug packagingBecause drugs are solid, liquid, tablet, powder, etc.
, some use bottles and cans, some use films, and there are also many polymer materials involved, such as PVC, PP, PC, PA,
etc.
Materials of medical prefab house
.
According to conventional methods, it is difficult to satisfy with conventional materials
.
The two hospitals were built using rapid mobile room technology
.
This modular house uses a lot of polymer materials
.
In addition, there are various water and sewage systems, communication systems, etc.
.
.
.
.
.
.
The development of polymer materials has formed great general-purpose materials, great engineering plastics, and special materials used in some special fields for applications in different fields
.
It can be said that our current necessities of life are inseparable from polymers
.
In this battle against the new coronavirus, polymer materials also play a very important role!