When we choose and buy rubber sheets,we can choose the type of rubber sheets suitable for ourselves according to our different needs and uses.How to choose the rubber sheets with good quality and high cost performance in many rubber sheets?Some of the following methods can be used for reference when we buy rubber sheets in the future.
First,check the appearance quality of rubber sheets.First,look at the color of rubber sheets.The color of natural rubber sheets is golden yellow and the whole body is transparent.The carbonized rubber sheets are bronze or brown,with uniform color and gloss.With medium hardness,acid and alkali resistance.It can work in 20%acid(alkaline)liquid at a temperature of-30~+60oC.Use:It can be used to stamp various gaskets with good sealing performance.
Second,check the paint quality of rubber sheets.Put the floor in the light to see if there are bubbles,pimples and orange peel on the surface,and then see whether the paint is rich,full and smooth.For example,plate the surface of medium pressure plate with purple and sell it as high pressure plate.Therefore,in addition to checking the appearance quality when purchasing,the main determination of tensile strength can be done.In the horizontal direction of the plate,cut off 3 samples of 200mm×20mm,and test them on the tensile machine,so as to make it clear whether it is shoddy or jerry-built.
Three,the inherent quality of the rubber plate can be first looked at by hand and eye,if the floor is lighter in hand,the insulating rubber plate is made of tender bamboo;if the texture is blurred,the bamboo is not fresh,it is older bamboo.NBR has excellent resistance to fuel oil and aromatic solvents,but not to ketone,ester and chlorinated hydrocarbons and other media,so the oil-resistant sealing products are mainly made of NBR.
Four,whether the structure of the rubber plate is symmetrical and balanced can be seen from the cross-section of the two ends of the rubber plate,whether it conforms to the principle of symmetrical balance,if it conforms to the structure is stable.
Five,see whether the floor layer and the layer of the rubber plate are glued closely with both hands,and whether there will be layering.Silicone rubber has outstanding resistance to high and low temperature,ozone resistance and weather resistance,and can maintain its unique elasticity,ozone resistance and weather resistance within the working temperature range of-70°C to+260°C,which is suitable for making the sealing gaskets required in the thermal mechanism,such as strong light lampshade sealing washer,valve gasket,etc.