Compared with POM and PA, which is more wear-resistant?
It is well known that plastic buckles mostly use POM and PA. POM has a wider range of applications due to its high rigidity and fatigue resistance. POM plastics use environmentally friendly POM, which are all recyclable materials.
PA plastic is to replace metal to meet the requirements of lightweight and cost reduction of downstream industrial products. PA has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and friction coefficient It has a certain flame retardancy and is easy to process. It is suitable for filling and reinforcing with glass fiber and other fillers to improve performance and expand the scope of application. Therefore, it is used on products with a higher safety index, such as ours: our life jacket buckles have a bearing capacity of 160KG
Compared with POM and PA, which is more wear-resistant?
POM has self-lubricating properties. The higher the rigidity, the wear resistance will improve the wear resistance to a certain extent. It is not absolute. POM wear resistance can be modified with PTFE, or POM plus silicone oil to improve the wear resistance and reduce the friction coefficient!
PA materials and glass-filled nylon are inherently heat and abrasion resistant, making them ideal for use with similar materials (with nylon) or with different materials (with metals or other thermoplastics). for the manufacture of moving parts. Still, wear and tear persists.
The anti-skid and wear properties of PA materials can be enhanced in different ways, by far the most common solution is polytetrafluoroethylene (PTFE) additives. Under wear conditions, the PTFE is exposed and spreads out on the surface as the friction process develops, forming a similar coating structure with a very low coefficient of friction (COF).
|
Property |
Test Condition |
Unit |
Standard |
guide value |
||
|
|
d.a.m. |
cond. |
||||
|
Rheological properties |
||||||
|
|
Molding shrinkage, parallel |
60x60x2; 260 °C / MT 80 °C; 600 bar |
% |
ISO 294-4 |
1.14 |
|
|
|
Molding shrinkage, transverse |
60x60x2; 260 °C / MT 80 °C; 600 bar |
% |
ISO 294-4 |
1.22 |
|
|
|
Post- shrinkage, parallel |
60x60x2; 120 °C; 4 h |
% |
ISO 294-4 |
0.42 |
|
|
|
Post- shrinkage, transverse |
60x60x2; 120 °C; 4 h |
% |
ISO 294-4 |
0.11 |
|
|
|
||||||
|
|
Tensile modulus |
1 mm/min |
MPa |
ISO 527-1,-2 |
3500 |
1400 |
|
|
Yield stress |
50 mm/min |
MPa |
ISO 527-1,-2 |
94 |
55 |
|
|
Yield strain |
50 mm/min |
% |
ISO 527-1,-2 |
4.2 |
20 |
|
|
Nominal strain at break |
50 mm/min |
% |
ISO 527-1,-2 |
10 |
155 |
|
|
Charpy impact strength |
23 °C |
kJ/m² |
ISO 179-1eU |
110 |
N |
|
|
Charpy impact strength |
-30 °C |
kJ/m² |
ISO 179-1eU |
120 |
185 |
|
|
Charpy notched impact strength |
23 °C |
kJ/m² |
ISO 179-1eA |
<10 |
15 |
|
|
Charpy notched impact strength |
-30 °C |
kJ/m² |
ISO 179-1eA |
<10 |
<10 |
|
|
Izod impact strength |
23 °C |
kJ/m² |
ISO 180-1U |
80 |
N |
|
|
Izod impact strength |
-30 °C |
kJ/m² |
ISO 180-1U |
110 |
130 |
|
|
Izod notched impact strength |
23 °C |
kJ/m² |
ISO 180-1A |
<10 |
10 |
|
|
Izod notched impact strength |
-30 °C |
kJ/m² |
ISO 180-1A |
<10 |
<10 |
|
|
Flexural modulus |
2 mm/min |
MPa |
ISO 178-A |
3200 |
1300 |
|
|
Flexural strength |
2 mm/min |
MPa |
ISO 178-A |
127 |
49.0 |
|
|
Flexural strain at flexural strength |
2 mm/min |
% |
ISO 178-A |
6.2 |
8.0 |
|
|
Flexural stress at 3.5 % strain |
2 mm/min |
MPa |
ISO 178-A |
105 |
36 |
|
|
Puncture maximum force |
23 °C |
N |
ISO 6603-2 |
3730 |
4630 |
|
|
Puncture maximum force |
-30 °C |
N |
ISO 6603-2 |
2396 |
|
|
|
Puncture energy |
23 °C |
J |
ISO 6603-2 |
13.1 |
27.2 |
|
|
Puncture energy |
-30 °C |
J |
ISO 6603-2 |
5.1 |
|
|
|
Ball indentation hardness |
|
N/mm² |
ISO 2039-1 |
151 |
70 |
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【editor】：JIMEICopyright：https://www.bucklemanufacture.comReproduced please indicate the source
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