| Title |
Rheological and mechanical properties of filled with calcite concentrate polypropylene blends / |
| Authors |
Saitarly, S ; Rezanova, N ; Plavan, V ; Beleška, Kęstutis |
| DOI |
10.1088/1757-899X/500/1/012034 |
| Full Text |
|
| Is Part of |
IOP Conference Series: Materials Science and Engineering: International Conference Baltic Polymer Symposium 2018, 12–14 September 2018, Jurmala, Latvia.. Bristol : IOP Publishing. 2019, vol. 500, art. no. 012034, p. 1-7.. ISSN 1757-8981. eISSN 1757-899X |
| Keywords [eng] |
surface properties ; carbonate ; calcite |
| Abstract [eng] |
It has been found that the addition of calcite concentrate 5-50% w/w allows regulation the rheological properties of polypropylene-based composition melts. It was established that the increasing of the amount of the filler up to 50% w/w in the PP based composition led to decrease of its melt viscosity by 40% comparing with initial polymer melt. This may be explained by the plasticization effect of stearic acid, which is commonly used to treat the surface of calcite concentrate. The addition of a propylene-octene block copolymer as a modifying additive makes it possible to produce high-filled materials that are more resistant to impact loading. The increasing the calcite concentrate content up to 10% w/w increases the impact strength by 10% compared with the initial polypropylene. Further increasing of calcite concentrate content up to 20% led to decrease impact strength almost to the value for the initial polypropylene, at not critical decrease in tensile strength. Elongation of compositions is higher with the presence of block copolymer. The developed compositions with propylene-octene block copolymer as a modifying additive can be used for production of automotive details. |
| Published |
Bristol : IOP Publishing |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2019 |
| CC license |
|
