What are the methods to prevent degumming of polyurethane ru

What are the methods to prevent degumming of polyurethane rubber rollers?
What are the ways to prevent polyurethane rubber rollers from degumming? Choosing suitable adhesives, controlling pouring temperature, mixing temperature and mixing time, etc. can prevent polyurethane rubber rollers from degumming. Let's take a look together below!
To prevent degumming of the polyurethane rubber rollers, the synthesis process should be selected reasonably. In the process of processing polyurethane product rubber rollers, the reaction temperature must be reasonably controlled to prevent excessive heat generated by the exothermic reaction from accumulating and causing the system temperature to rise quickly. The mixing temperature and mixing time must be accurately controlled. To prevent degumming of polyurethane rubber rollers, attention should be paid to reasonable temperature control. The stability of the polyurethane material liquid should be close to the temperature of the iron core and the mold. During demolding, excessive force or strong impact during movement may cause cracks in the polyurethane product and invisible core removal.
To prevent degumming of polyurethane rubber rollers, you must choose a suitable adhesive. For example, coating a primer containing multiple isocyanate groups on the roller core has a better effect on enhancing the adhesion. Make the polyurethane and metal produce higher bonding strength. Secondly, the cast iron roller core must ensure that the surface is clean and dirty and the surface roughness is increased by sandblasting, thereby increasing the bonding strength. And to ensure that it is dry to prevent rust.
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