上海淞江减震器集团有限公司介绍：DN150球墨法兰天然橡胶伸缩节信息，淞江集团为众多客户提供更优质的产品，不断开发新产品，不断的走在行业的前沿，又一新产品横空出世，QT450球墨法兰橡胶伸缩节已经悄然上市。
天然橡胶的化学特性。因为有不饱和双键，所以天然橡胶是一种化学反应能力较强的物质，光、热、臭氧、辐射、屈挠变形和铜、锰等金属都能促进橡胶的老化，不耐老化是天然橡胶的致命弱点，但是，添加了防老剂的天然橡胶，有时在阳光下曝晒两个月依然看不出多大变化，在仓库内贮存三年后仍可以照常使用。
橡胶接头一般由内胶层、织物增强层（增强层有多层刮胶锦纶帘子布）、中胶层、外胶层、端部加固金属环或钢丝圈，经高温、高压硫化成型后，与金属法兰或平行接头松套组合而成的复合橡胶管。此产品利用了橡胶的高弹性、高气性、耐介质性、耐候性和耐辐射性等优点，可降低管道的振动及噪声，并可对因温度变化引起的热胀冷缩起补偿作用。
Shanghai Songjiang shock absorber Group Co., Ltd. introduces: the information of the DN 150 ductile flange natural rubber expansion joint. Songjiang group provides more high-quality products for many customers, continuously develops new products, and constantly walks in the forefront of the industry. Another new product is coming out. QT450 ductile flange rubber expansion joint has been quietly listed.
Chemical properties of natural rubber. Natural rubber is a kind of material with strong chemical reaction ability because of its unsaturated double bond. Light, heat, ozone, radiation, bending deformation, copper, manganese and other metals can promote the aging of rubber. Aging resistance is the fatal weakness of natural rubber. However, natural rubber added with antioxidant can not see much change after being exposed to the sun for two months, so it is in the warehouse After storage for three years, it can still be used as usual.
The rubber expansion joint is generally composed of inner rubber layer, fabric reinforcement layer (the reinforcement layer has multi-layer scraping nylon cord fabric), middle rubber layer, outer rubber layer, end reinforcement metal ring or steel ring, which is vulcanized at high temperature and high pressure, and is combined with metal flange or parallel joint loose sleeve. This product takes advantage of the advantages of rubber such as high elasticity, high gas resistance, medium resistance, weather resistance and radiation resistance. It can reduce the vibration and noise of the pipeline and compensate the thermal expansion and cold contraction caused by temperature change.
