Mirowski Jacek, Oliwa Rafał, Oleksy Mariusz, Tomaszewska Jolanta, Ryszkowska Joanna, Budzik Grzegorz
Faculty of Technology and Chemical Engineering, The J. and J. Śniadeccy University of Science and Technology in Bydgoszcz, PL-85796 Bydgoszcz, Poland.
Faculty of Chemistry, Department of Polymer Composites, Rzeszow University of Technology, PL-35959 Rzeszów, Poland.
Polymers (Basel). 2021 Mar 29;13(7):1079. doi: 10.3390/polym13071079.
This study examined, the effect of chemically extracted raspberry pomace on the thermal stability, mechanical properties, flammability, chemical structure and processing of poly(vinyl chloride). It was observed that the pomace in this study was used to extract naphtha, thereby permitting the removal of bio-oil as a factor preventing the obtaining of homogeneous composites. Furthermore, adding 20% raspberry pomace filler after extraction extended the thermal stability time for the composites by about 30%. It was observed that composite density, impact strength, and tensile strength values decreased significantly with increasing concentrations of filler in the PVC matrix. At the same time, their modulus of elasticity and Shore hardness increased. All tested composites were characterized by a good burning resistance with a flammability rating of V0 according to the UL94 test. Adding 20 to 40% of a natural filler to the PVC matrix made it possible to obtain composites for the production of flame resistant elements that emitted less hydrogen chloride under fire conditions while ensuring good rigidity.
本研究考察了化学提取的树莓果渣对聚氯乙烯的热稳定性、力学性能、可燃性、化学结构及加工性能的影响。研究发现，本研究中的果渣用于提取石脑油，从而能够去除生物油，而生物油是妨碍获得均匀复合材料的一个因素。此外，提取后添加20%的树莓果渣填料可使复合材料的热稳定时间延长约30%。研究发现，随着PVC基体中填料浓度的增加，复合材料的密度、冲击强度和拉伸强度值显著降低。同时，其弹性模量和邵氏硬度增加。根据UL94测试，所有测试的复合材料均具有良好的阻燃性，阻燃等级为V0。向PVC基体中添加20%至40%的天然填料，能够获得用于生产阻燃元件的复合材料，这些复合材料在火灾条件下释放的氯化氢较少，同时确保良好的刚性。
