Features of Wear and Corrosion Resistance of Single Arch Rubber Joint
Wear & corrosion resistance rubber expansion joint has the same outer rubber-natural aging resistant rubber, but just changed rubber material and the skeleton layer. Commonly this kind of rubber material has good ageing resistance and temperature tolerance in different environment. The skeleton layer of wear & corrosion resistance rubber material is a kind of special nylon cord fabric, compared to general polyester fabric it can act better.Generally, the inner rubber layer is the main point for wear and corrosion resistance, with SBR, NBR, EPDM as mixed raw materials, can it reach to better wear and corrosion resistance.
Wear resistant and corrosion resistant rubber joints can be structured as: single sphere, double sphere and multi sphere. The connection ways are:loose flange, fixed flange type, clamped type and screw type. For superior quality and more durable of the rubber joint, the rubber material must comply to a certain standard. Rubber joint inner rubber layer and an outer layer must comply with the following indicators:
1. The tensile strength :MPa ≥12 ≥13
2. Tensile yield:% ≥450 ≥500
3. Permanent deformation: % ≤25 ≤30
4. Brittle temperature:℃≤-30 ≤30
5. Adhesive strength:kN/m ≥2.0 ≥2.0
6. Air ageing:100℃，48h, Tensile strength change rate:% +25～-25 +25～-25
7. Acid resistance:(10%H2SO4，normal temp，168h) ≥0.7 ≥0.7
8. alkali resistant:(10%H2SO4，normal temp，168h) ≥0.7 ≥0.7
Wear & corrosion resistance rubber expansion joint is used commonly in many industries, as a professinal manufacter, Gongyi Xinli Pipeline Equipment Company can comply to all the standard and satisfy you most.
Features of Wear and Corrosion Resistance of Single Arch Rubber Joint
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