Performance comparison between vulcanized EPDM rubber sealing strips and PVC strips

Number of hits：2082024-04-22 11:07:09　

With the increasing energy-saving requirements of the country for building doors and windows, high-performance energy-saving doors and windows have become the mainstream of building doors and windows. Energy saving door and window systems are generally composed of profiles, hardware components, glass, ethylene propylene diene monomer (EPDM) sealing strips, and processing technology modules. Sealing strips have been ignored by many door and window manufacturers due to their low cost and the influence of some traditional concepts that do not pay attention to energy-saving standards for doors and windows. However, sealing strips play a crucial role in door and window systems. EPDM is currently recognized as the best material for producing sealing strip products worldwide.

1、 Performance comparison between vulcanized EPDM rubber sealing strips and PVC strips
In terms of sealing elasticity and durability, it is greatly enhanced compared to PVC strips, but due to the need for microwave vulcanization line shaping, the processing energy consumption is high, usually more than 20 times that of PVC processing. The product cannot be reused, is not environmentally friendly, and is not a product advocated by the country. In addition, the material proportion of this type of product (above 1.4) is equivalent to that of PVC (with a higher proportion of low-end vulcanized EPDM rubber strips), and the window yield is similar to that of PVC rubber strips. The cost of use is relatively high, which is difficult for door and window enterprises to accept.
This sealing strip is a new material developed on the basis of imported technology from abroad and domestic independent research and development in recent years. It is mainly used for automotive door and window sealing strips, and has been used for building door and window sealing strips in recent years. Its outstanding advantages are:
1. The performance and service life are equivalent to those of vulcanized EPDM rubber sealing strips.
2. The processing energy consumption is relatively low compared to vulcanized EPDM rubber strips (equivalent to PVC).
3. It does not contain heavy metals such as halogens and lead, and can be recycled after several years, meeting the requirements of green building materials.
4. The proportion is small (only 0.9-0.95) and the window out rate is high.