Filter Material for PU Air Filter
For the PU Air Filter in the PU Air Filter Line, its Filter Material may not be directly made of polyurethane (PU), because polyurethane is more commonly used to make the filter frame, seals or other non-filter layer parts. However, in some special designs or applications, PU material may be involved in the manufacture of the filter layer in some form, although this is not a common practice.
In most cases, the filter material of the PU Air Filter may be one of the following materials or a combination:
- Non-woven fabric: Non-woven fabric is a non-woven fabric composed of randomly arranged fibers, which has good air permeability and certain filtration efficiency. It can be made of synthetic fibers such as polypropylene (PP) and polyester (PET), which are suitable for making primary filters. Although non-woven fabric itself is not polyurethane, it is one of the common filter materials in air filters.
- Glass fiber: Glass fiber filter material has high filtration efficiency and high temperature resistance, and is often used in high-efficiency filters and ultra-high-efficiency filters. Although it is not a polyurethane material, glass fiber is one of the preferred filter materials when high-precision filtration is required.
- Synthetic fibers: Various types of synthetic fibers, including polyester and nylon, can also be used as filter materials for air filters. These materials have good filtering performance and durability, and different fiber diameters and weaving methods can be selected as needed to meet different filtering requirements.
- Special composite materials: In some high-end or special application PU Air Filters, composite materials containing polyurethane components may be used as filter layers. This composite material may combine certain properties of polyurethane (such as elasticity, chemical corrosion resistance, etc.) and the filtering properties of other materials to provide more comprehensive functions.
It should be noted that due to the variety of filter designs and application requirements, the filter materials of PU Air Filters may also vary depending on the manufacturer, product model and specific use. In actual applications, it is recommended to refer to the specific product specification sheet or consult the filter manufacturer for accurate information.
Technical Parameters:
|
Items |
Part A |
Part B |
|
|
Before curing |
Appearance |
white |
brown |
|
Viscosity(mPa.s) |
22000±5000 |
200±50 |
|
|
Density(g/cm3) |
1.70±0.05 |
1.22-1.25 |
|
|
Use ration by weight A:B |
6：1 |
||
|
Specification |
Viscosity after mixing(mPa.s) |
3500±500 adjustable |
|
|
Operation time(min,25℃) |
30 adjustable |
||
|
Turnover time(min,25℃) |
150 adjustable |
||
|
Curing time(h,25℃) |
24 |
||
|
After curing |
Light yellow |
||
|
Shear strength(N/mm) |
19.85 |
||
|
Max peel force(N) |
990.63 |
||
|
Max peel strength(N/mm) |
99.06 |
||
|
Average peel force(N) |
717.77 |
||
|
Average peel strength(N/mm) |
71.78 |
||
|
Min peel force(N) |
455.87 |
||
|
Min peel strength(N/mm) |
45.59 |
||
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