Yıldız Cansu, Seki Yoldas, Ekti Merve, Aker Sibel, Leskeri Berkay Metin, Sarikanat Mehmet, Altay Lutfiye
The Graduate School of Natural and Applied Sciences, Dokuz Eylul University, Buca, İzmir 35390, Turkey.
Faculty of Science, Dokuz Eylul University, Buca, Izmir 35160, Turkey.
ACS Omega. 2023 Mar 1;8(10):9415-9422. doi: 10.1021/acsomega.2c08066. eCollection 2023 Mar 14.
The effect of zinc borate (ZB) and high-molecular-weight siloxane (SIL) on flame retardancy, mechanical, and thermal properties of aliphatic polyketone (POK)-containing aluminum diethyl phosphinate (OF) was investigated in this study. Ten wt % OF is sufficient to obtain V0 rating according to the UL94 test. As the weight fraction of OF was increased, the flame retardancy properties and LOI values improved, while the tensile and impact properties decreased. To avoid the degradation in mechanical and impact properties as much as possible and obtain the same and better flame retardancy properties, synergists such as SIL and ZB were used. Flame retardancy of POK-based composites was determined by the limiting oxygen index (LOI) test, UL94 measurement, and cone calorimeter test. The additions of 1 wt % SIL and ZB have not led to a considerable decrease in the tensile strength and impact properties of POK-10OF. While ZB and SIL are very efficient in decreasing the smoke density, ZB is more efficient than SIL in increasing the LOI value of the composite. The addition of 1, 2, and 4 wt % ZB and SIL synergists did not lower their UL94 ratings. Moreover, it can be added that ZB is more efficient than SIL in decreasing the fire growth rate (FIGRA) and maximum average rate of heat emission (MARHE) values. Using OF (10 wt %) and ZB (4 wt %), LOI values higher than 32% and smoke density values lower than 150 were obtained.
本研究考察了硼酸锌（ZB）和高分子量硅氧烷（SIL）对含次膦酸铝（OF）的脂肪族聚酮（POK）的阻燃性、机械性能和热性能的影响。根据UL94测试，10 wt%的OF足以获得V0等级。随着OF重量分数的增加，阻燃性能和极限氧指数（LOI）值提高，而拉伸性能和冲击性能下降。为了尽可能避免机械性能和冲击性能的下降，并获得相同或更好的阻燃性能，使用了SIL和ZB等协同剂。通过极限氧指数（LOI）测试、UL94测量和锥形量热仪测试来测定POK基复合材料的阻燃性。添加1 wt%的SIL和ZB并未导致POK-10OF的拉伸强度和冲击性能大幅下降。虽然ZB和SIL在降低烟密度方面非常有效，但ZB在提高复合材料的LOI值方面比SIL更有效。添加1 wt%、2 wt%和4 wt%的ZB和SIL协同剂并未降低其UL94等级。此外，可以补充的是，ZB在降低火灾增长速率（FIGRA）和最大平均热释放速率（MARHE）值方面比SIL更有效。使用OF（10 wt%）和ZB（4 wt%），可获得高于32%的LOI值和低于150的烟密度值。
