作者：上海松夏减震器有限公司 日期：2019-03-01 来源：橡胶接头厂家
How to distinguish EPDM rubber joint material is true or false?
Along with the rubber soft joint production technology and the craft progress day by day, the following counterfeit and the inferior product also in imperceptibly blends into the market, causes the general customers to be at a loss what to do when the choice regular product.Especially high temperature, oil, acid and alkali resistance of high quality epdm soft joint.
EPDM,, its point is ozone resistance, uv resistance, weather resistance and aging resistance, outstanding.The use of temperature of about 50 ℃ ~ + 150 ℃.Pine summer manufacturers through the epdm rubber with high filling, so that its performance to achieve.Example: can be acid and alkali resistance, high temperature resistance, that aging corrosion.So the price is high.
At present, epdm soft joints in the market are often small manufacturers in order to reduce costs, in the process of production in the sphere of epdm rubber in the inner layer, and the skeleton layer and the outer layer is still using ordinary rubber, more or less only through the medium of the layer using real rubber.How to identify the following to introduce a few points.
One, watch its color
Look at the color, that is, carefully observe the color of the rubber ball, many counterfeit products because of the use of low-end, low-quality rubber, so the production of the ball color is often.Most of them will take black shoe polish to polish it before they leave the factory, so that it looks bright black light.But the real epdm rubber produced by the rubber joint, pure color, slightly dull.No. Light or dark.
Two, smell its flavor
Taste is actually, one way to tell, because rubber is made of alkenes, it has a pungent smell to the human eye.However, epdm is a polymer of ethylene and propylene, and it is a highly filling material. Therefore, after vulcanization, epdm does not have the pungent taste of common rubber, but instead replaces an aromatic taste.So as long as users pay attention, it is not difficult to judge the real good goods.
Three, touch its feeling
Tactile means that you carefully rub the inner layer of the rubber ball, will have a smooth feeling, due to the authentic epdm excellent quality, expensive.So the production of soft rubber joints in particular on the tactile smooth, and the ordinary rubber touch up the feeling is far from, will have the feeling of stroking rough skin.