The hot summer season not only made us sweat, but all kinds of rubber products in our homes were softened and even sticky. For example, the door and window seals in the room and the outdoor car weather strips were all made of EPDM rubber/reclaimed rubber. As the temperature continues to rise, many weatherseal products have experienced aging and lost their original sealing effect. Users have endless headaches, sealing strip manufacturers are dying. Why does the aging of EPDM/recovery rubber seals accelerate in the summer?
In fact, the accelerated aging of EPDM weatherstrips in summer is due to the high temperature: In the case of automobile seals, summer car will be used outdoors for a long time, and the EPDM seals in high temperature exposure are high in the interior. The molecular chains will break under the action of high temperature and form active free radicals. These free radicals will cause the breakage or recrosslinking of the rubber polymer chains, eventually leading to aging and deterioration of the rubber material, and thus the elasticity of the sealing strip. Reduce the deterioration of the sealing effect. Therefore, in the hot summer months, the owners must always check whether the seals of “Love Pets” have been aging; at the same time, the door and window seals at home must be checked at any time, do not wait for the weather seal to age, catch up with the rain, and finally Lead to "draw a map" on your own wall.
Related research data shows that for every 10°C increase in ambient temperature, the aging rate of rubber products will increase by 2.6 times. The main reason that EPDM rubber is used to produce door and window sealing strips is that it is resistant to high and low temperature and aging resistance, and EPDM reclaimed rubber is used as the product of EPDM rubber products recycling and retains its excellent anti-aging properties. High temperature and low temperature resistance are therefore used as an ideal raw material for the production of door and window seals instead of EPDM rubber and reducing raw material costs.
EPDM reclaimed rubber is processed from waste EPDM rubber products, EPDM unvulcanized rubber compounds, and has good oxidation resistance, ozone resistance, erosion resistance, and mostly black blocks. Solids and a small amount of white-gray EPDM reclaimed rubber products can replace EPDM rubber to produce various products.
The market price of EPDM rubber is relatively high. At this time, you can choose high-quality EPDM reclaimed rubber instead of raw rubber to produce all kinds of sealing strip products, in addition to its high and low temperature resistance, aging resistance, and ozone resistance. Corrosion resistance, but also pay attention to its hardness and compression set, these will directly affect the sealing performance and service life of EPDM sealing strip.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits