What is the effect of plasticizer DOP on the properties of NBR and PP blends?

Dynamically fully vulcanized NBR/PP thermoplastic elastomers are particularly attractive in thermoplastic elastomers. Since the US company AES in 1985, the industrial production of NBR/PP thermoplastic vulcanizate (TPV) product Geolast has been widely used in wire and cable and lining due to its excellent physical properties, oil resistance, alcohol resistance and heat resistance. In mats, seals, fuel pipes, diaphragms and automotive fuel tanks. Thermoplastic elastomers have vulcanizate properties at normal temperatures and plastics processability at processing temperatures, and thus have gradually replaced conventional thermoset rubbers in many fields. However, for blended thermoplastic elastomers, the high hardness of the article is an important obstacle to its replacement of thermoset rubber. Therefore, the development of low hardness products is an inevitable way to expand the application of TPV. Domestic research on NBR/PP blends is rare, and research focuses on the choice of compatibilizers.



Dioctyl phthalate (DOP) is a commonly used plasticizer for NBR, which can weaken the interaction between NBR molecules, improve the softness and elasticity of NBR, and effectively reduce the hardness of the blend. In this work, DOP was selected as a plasticizer for NBR/PP blends to study its effects on the physical properties, crystallization properties and rheological properties of the blends.

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