Hebei conqi Auto Parts Co., Ltd. has 10 years of experience in extruding rubber and plastic products to share with you the advantages and disadvantages of EPDM hoses: aging resistance, electrical insulation performance and ozone resistance performance are outstanding. Excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties, oil filling and normal temperature fluidity for various polar chemicals such as alcohols, acids, alkalis, oxidants, refrigerants, Detergents, animal and vegetable oils, ketones and fats all have good resistance; however, they are less stable in aliphatic and aromatic solvents (such as gasoline, benzene, etc.) and mineral oils. Under the long-term action of concentrated acid, the performance will also decrease, and the water vapor resistance is better than its heat resistance. In superheated steam at 230°C, there is no change in appearance after nearly 100 hours. Under the same conditions, fluororubber, silicone rubber, fluorosilicone rubber, butyl rubber, nitrile rubber, and natural rubber will experience obvious deterioration in appearance after a relatively short period of time. Since there are no polar substituents in the molecular structure of ethylene-propylene rubber, the cohesive energy of the molecule is low, and the molecular chain can maintain flexibility in a wide range, second only to natural rubber and butadiene rubber, and can still maintain at low temperature. Due to the lack of active groups in the molecular structure of ethylene-propylene rubber, the cohesive energy is low, and the rubber is easy to bloom, and the self-adhesiveness and mutual adhesion are very poor.
Our factory has undergone many experiments and more production, and the update of raw materials and technology has gradually shortened the gap between the advantages and disadvantages of epdm tubes and is more stable. However, it is also necessary to select the most suitable for customers from the perspective of customer needs. product.
Post time: May-26-2023