POM modification technology classification discussion
POM modification generally has the following categories:
A, flame retardant modification
POM has the lowest oxygen index in plastics, is extremely flammable, and has a chain reaction. It is sensitive to acid and alkali. So far, there are no flame retardant POM products with excellent performance. Everyone can concentrate on research, and the monopoly market belongs to you guys.
The above are common modified products of POM. Looking forward to everyone's warm discussion
B, wear-resistant modification
POM itself has good abrasion resistance and self-lubricity, but in order to meet more demanding industrial requirements and obtain better friction resistance performance, sometimes it is necessary to modify the abrasion resistance of POM. The most common are PTFE and molybdenum disulfide. And other modifications. Specifically, it is necessary to formulate a suitable plan according to the different needs of customers, which is very particular.
C, filling modification
Because of its high crystallinity, POM has poor dimensional stability. In some areas with strict size requirements, the dimensional stability of POM needs to be modified. A common method is to fill glass beads.
D, toughening modification
One of the disadvantages of POM is its low impact strength. Therefore, the toughening and modification of POM is of most concern. At present, it is widely used in door buckles, seatbelt buckles, transmission gears, and some places that require low temperature resistance.
E, enhanced modification
Replace copper, zinc and other metals to prepare bearings, high-strength gears, and structural parts. It is required that the rigidity and mechanical properties of POM materials be further improved, and glass fiber reinforced modification be used to obtain high strength and high modulus POM.