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Rubber fender manufacturers tell you how important the vulcanization pressure of rubber is.
Edit: Jiangsu Ahn Jin Rubber Co., Ltd.Date: 2018-07-05

The vulcanization pressure refers to the amount of pressure applied per unit area of the rubber product during the vulcanization process. In addition to thin-walled products such as tape, other rubber fenders require a certain amount of pressure during the vulcanization test. The pressure effect of vulcanization mainly has the following points:
1. Prevent the rubber fender from generating bubbles during the vulcanization process and improve the compactness of the rubber compound.
During vulcanization, the rubber contains moisture and other volatile substances, and hydrogen sulfide gas which may be formed in the vulcanization reaction, and the volatilization occurs at a high temperature to cause bubbles of the rubber. If a vulcanization pressure greater than the size at which the rubber may escape is generated during vulcanization, the generation of bubbles can be prevented and the compactness of the compound can be improved.
2. The rubber fender compound is easy to flow and fills the cavity to produce a clear and full-filled rubber product, which must be able to flow and fill the cavity. In particular, the vulcanization pressure is more pronounced during the vulcanization induction period in which the rubber is in an uncrosslinked state. Experiments have shown that for molded rubber products, if the vulcanization temperature is 100-140 ° C, the vulcanization pressure should be in the range of 2-4.9 MPA.
3. When the adhesion strength of the rubber fender rubber and the cloth layer is increased, as the vulcanization pressure increases, the depth of the rubber penetrating into the cloth layer increases, thereby improving the adhesion between the rubber and the cloth layer and the resistance of the rubber fender. Flexibility.
4, contribute to the improvement of physical and mechanical properties of vulcanizate

Experiments have shown that with 5MPA pressure vulcanization, the wear resistance is 10%-20% higher than that of the conventional 2MPA vulcanized rubber fender . This is because increasing the vulcanization pressure can increase the compactness of the vulcanizate. However, too high a vulcanization pressure is detrimental to the performance of the rubber because the high pressure, like high temperature, accelerates the pyrolysis of the rubber molecules. In addition, the structure of the textile material under high pressure is also destroyed, resulting in a decrease in flex resistance.
Nowadays, with the upgrading of marine engineering ship technology and the popularity of bridge pier collision prevention, we recognize that rubber fenders are no longer just a rubber product, but a more comprehensive, more humane, close to the actual needs of users. Parking anti-collision system assembly. We have absorbed and developed the international advanced rubber fender design and manufacturing technology, accumulated rich rubber fender formula, steel and rubber combination, anti-shock plate design and anti-corrosion, accessories application experience, designed and developed drum rubber fender, Y-type rubber Fender , Cone fender (CONE), rotating fender (TOUN CELL), π-type fender, profiled fender, wrap angle fender, and design and optimize anti-shock plates and veneers for each series of products And other attachment assemblies. It has won praises for its well-known ports at home and abroad, large central enterprise wharfs, extra-large high-speed high-speed railway bridges, marine equipment engineering and ship systems.