Polymers have long been used to tailor the properties of lubricants and greases. Grease polymers in particular uniquely benefit grease in the areas of mechanical stability, water resistance, yield and tackiness.
Grease polymers can have an effect on cone penetration test results and consistency of grease. Thickening from the grease polymer translates to added yield per weight of thickener and is often used to improve the economics of grease products.
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However, the use of high molecular weight polymers to add consistency in grease often requires accounting for the effect of mechanical shearing on the polymer. Large molecules like polymers are subject to higher stresses and strains, which can result in mechanical breakdown of the grease and lead to equipment damage or failure. Grease polymer manufacturer Functional Products designed a study to address two fundamental questions: