products are mainly used in pipelines to compensate for pipeline displacement and reduce pipeline vibration. Generally, when rubber joints are used as pipe shock throats, they are mainly used for small-caliber flexible rubber joints, and small-caliber pipe pressure. If this is high, the pump needs to give enough pressure. During the use, there will be various vibration phenomena of the pipeline caused by the impact of the water flow. The main causes of the unstable water flow are various. The vibration problem caused by the pipeline is very obvious. At a certain frequency, a lot of noise will be generated, which will affect the service life of the pipeline. This noise is a pollution to the environment. In this case, it is necessary to add a flexible rubber joint in the pipeline as the first choice for pipeline vibration reduction and noise reduction. Generally, a grooved flexible rubber joint is used because it does not require a large displacement. Flexible rubber joints can meet the requirements of vibration and noise reduction.
Definition of rubber aging: During the processing, storage or use of raw rubber or rubber products, they will be affected by heat, oxygen, light and other dry factors, and gradually undergo physical and chemical changes, which will reduce their performance and lose their use. This phenomenon is called rubber aging.
Symptoms of rubber aging: During rubber aging, there are often some significant phenomena. For example, it can be found in the appearance that long-term storage of natural rubber becomes soft, sticky, and spots; rubber products are deformed, brittle, hard, cracked, Mold, light loss, and color changes. In terms of physical properties, rubber has changes such as swelling and rheological properties. In terms of mechanical properties, tensile strength, elongation at break, impact strength, flexural strength, compression ratio, elasticity and other indicators will decrease.
Reasons for rubber aging: The phenomenon of rubber aging comes from its long-term heat, oxygen, light, mechanical force, radiation, chemical media, ozone in the air and other external factors, which cause chemical changes in its macromolecular chain and destroy the original rubber. Chemical structure, resulting in deterioration of rubber properties. The main external factors that cause rubber aging are physical, chemical and biological factors. Physical factors include heat, light, electricity, stress, etc .; chemical factors include oxygen, ozone, acid, alkali, salt and metal ions; biological factors include microorganisms (molds, bacteria), insects (termites, etc.). These external factors often do not work alone in the rubber aging process, but interact with each other to accelerate the rubber aging process. For example, the tire sidewall will be affected by various factors such as heat, light, alternating stress and strain, oxygen, and ozone during use.
Different products have different effects under different conditions of use, and their aging conditions are also different. Even if the same product is used, the aging condition is different due to different seasons and regions. Therefore, the aging of rubber is a comprehensive chemical reaction caused by many factors. Among these factors, the most common and important chemical factors are oxygen and ozone; the physical factors are thermal, light, and mechanical stress. The aging of general rubber products is the result of the combined action of one or more of them. The most common thermal oxygen aging.
Since its establishment, Shanghai Luoying Pipeline Equipment Co., Ltd.
has always pursued the business tenet of "survive by quality, develop by science and technology", the quality policy of "honesty, scientific and technological innovation, dedication and perfection" and a warm and thoughtful after-sales service system. All our employees in Shanghai Luoying welcome new and old customers to visit the factory! For details, please contact the hotline 021-62212627.