Effects of α Nucleating Agent HPN-715 on the Crystallization Behaviors,Mechanical and Thermal Properties of Polypropylene
Polypropylene(PP)is a classical thermoplastic polymer that is widely utilized due to its favorable characteristics,including low cost,high general-purpose strength,and corrosion resistance.It could be applied in a multitude of fields,including manufacturing and daily life.Nevertheless,the restricted mechanical properties and heat resistance of PP limit its applications in certain specialized fields.To identify a straightforward and viable approach for the fabrication of PP pipes for the large-diameter municipal drainage,the crystallization behaviors of PP were modulated by incorporating α nucleating agent(HPN-715)into PP samples,further enhancing the mechanical and thermal properties of PP.Isothermal crystallization kinetics and non-isothermal crystallization dynamics were used to analyze the effects of HPN-715 mass parts on the crystallization behaviors,mechanical properties and thermal deformation temperature of PP samples,and the influences of crystallization behaviors on the mechanical and thermal properties were further analyzed.The results show that,when the mass part of HPN-715 is 0.15 parts,the addition of HPN-715 successfully increases the PP crystallinity to 41.33％and effectively increases the PP crystallization rate.The maximum tensile strength of PP sample modified by HPN-715 increases to 25.6 MPa(the mass part of HPN-715 is 0.2 parts)on the premise that the impact properties remain basically unchanged,the bending modulus is up to 1 332.07 MPa(the mass part of HPN-715 is 0.2 parts),and the thermal deformation temperature is up to 93.9 ℃(the mass part of HPN-715 is 0.15 parts).This study could provide some basic data supports for the preparations of PP pipes for large diameter municipal drainage.
万方数据
维普
