What are the causes of the rubber products breach?
It's aging of rubberAging refers to the polymer materials (including rubber, plastics, fiber and so on) in the processing, storage and use of the process, due to the comprehensive effect of internal and external factors, its performance gradually deteriorated, resulting in the final loss of use value.
Rubber aging is a common problem of rubber products, and aging is mainly due to internal structure or component is easy to aging due to weakness, such as unsaturated double bond, branched, carbonyl, hydroxyl and so on; at the end, the main external or environmental factors are sunlight, oxygen, ozone, heat, water and mechanical stress force, high energy radiation, electricity, industrial gas, water, salt fog, fungi, bacteria, insects etc..
First: the use of rubber joints in the process of linking the length is not enough to force beyond the length of the link, the expansion of the scope of contraction may also splitSecond: rubber joints, the strength of the link is relatively low, then if the adhesive method is not accurate, the strength of the joint will be lower, there may be crackingThird: rubber joints after installation, in other places free here beyond the extension range of pipe strap, there may be cracking.Fourth: rubber joints in the outdoor adverse weather, explosion, sun, etc., lower than the use of temperature may also crack.Fifth: in the process of production of vulcanized rubber joint used in rubber function is not good or has been since sulfur failure, excessive grinding, wire rope and other parts of the rust, the joint strength will be greatly reduced, when in use, will likely easily disconnect joint phenomenon
Measures to prevent aging: from the point of view of aging, one of the main reasons is the polymer structure itself. Therefore, it is important to improve the structure of polymers to improve their aging ability. For example, in rubber vulcanization, there are still unsaturated double bonds, and rubber products in use and it is difficult to avoid the erosion of sunlight, oxygen, ozone, so people on the synthesis of new varieties, to avoid or reduce the polymer chain of rubber double bonds, such as ethylene and propylene two monomer by copolymerization made two yuan B two rubber, different from other synthetic rubber is one of the major characteristics in the structure of the backbone is not completely saturated with double bond, making it the most ozone resistance, chemical resistance, high temperature resistant rubber aging; there is a kind of antioxidant, such as adding oxygen or ozone to prevent aging caused by antioxidants. Add UV stabilizers, heat stabilizers, preservatives and other unfavorable factors, and caused by aging.
