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Rail transit sealing strip in use after a period of time will be because of the light, the wind blows the rain a variety of reasons will gradually aging, aging after sealing strip of sealing will be greatly reduced, in order to prolong the service life of sealing strip, in the use of seals must pay attention to the maintenance method of sealing strip, the following is analysis the cause of the aging sealing strip with everybody:
The ageing problem of rail transit sealing strip has been a difficult problem in sealing industry, the rubber sealing strip in industry application is very wide, so solve the ageing problem of rubber to seal the development of the industry is very important. At the same time, aging problem is affecting sealing to seal one of the main factors.
Rail transit aging is mainly refers to the rubber sealing strip in the process of using or storage of surface cracks, hardening, discoloration, cracks etc. Phenomenon.
The main factors affecting rail transit sealing strip in aging is the natural environment, one is that oxygen, ozone, etc. The influence of air composition, mainly oxidation reaction of rubber molecule chain break, but the effect of ozone and oxygen level is different, the oxidation of ozone destructive. Second, the influence of light and moisture, it is a key factor of accelerated aging, the moisture in the air is necessary conditions which can soften the orbit traffic sealing strip, and the light is the main factor promoting it happen discoloration, long-term sun exposure can make the rubber deformation softening easily. Three is that the temperature, the temperature effect on the rubber or larger, mainly in the cold winter will make serious word can lead to fracture, rubber vulcanization of rubber hot summer can make the rubber to soften.
Above is the rail transit sealing strip has ageing of the main factors, so the maintenance should be mainly from the above waterproof sealing strip, cut off the air and heat preservation etc.