How to Avoid Color Fading for Single Sphere Rubber Expansion Joints?Rubber Expansion Joints Workshop

Color fading is a common seen problem for single sphere rubber expansion joints, the causes are diversified. It may relevant with dye optical property, inoxidizability, temperature difference, acid and alkali resistance and resin raw material property. Now Henan Lanphan tell you how to avoid color fading for rubber expansion joints.

Rubber Expansion Joints Workshop

Keep out of the sun. During the production process of rubber joints, the requirements for colorant is divided into 4-8 levels, 4 and 5 level is enough for keeping out of sun condition, but if the single sphere rubber expansion joints will used in strong sunlight outdoor, the light fastness should at least 8 level, add ultraviolet light absorber to injection molding, this is a brilliant idea to avoid color fading for rubber joints.

Also, the dye stability determines color fading degree. Dye component contains metallic oxide and salty matter, which has well heat stability and heat resistant property. The rubber expansion joints mainly made from HDPP and HDPE, injection temperature should higher than 280℃, so dye heat resistant property should take into account. Some oxidizing agent may has chemical reaction with dye under high temperature, this lead to color fading.

Henan Lanphan Industry Co., Ltd. is a professional rubber expansion joints manufacturer in mainland China, located in Henan Province, embraces a rich soil in industry products production, we have the exceptionally advantages, no matter in product quality, or in import and export services. Our rubber expansion joints products mainly includes single sphere, double sphere, triple sphere and four sphere rubber joints, clamp type, flange type and threaded type rubber expansion joints are also available. We can custom-made different type rubber expansion joint as your requirement, if you have any question about our products, please feel free to contact us at any time.