Mechanical and nonisothermal crystallization properties of coal gasification fine slag glass bead‐filled polypropylene composites

Abstract

Coal gasification fine slag (CGFS) was subjected to calcination at 600 °C for 7 h, forming CGFS glass beads (CGFSGB). CGFSGB was successfully incorporated into polypropylene (PP) by melt compounding. The results indicated that CGFSGB has the potential to replace calcium carbonate in the plastics market. Thermogravimetric analysis showed obvious reinforcement in thermal stability by incorporation of CGFSGB, but crystallization ability decreased. The CGFSGB was modified with 3‐methacryloxypropyltrimethoxy silane (KH570) and hydrochloric acid (HCl) to improve the compatibility between the CGFSGB and PP, resulting in CGFSGB‐S and CGFSGB‐A, respectively. The tensile strength, thermal stability, and crystallization ability of PP composites and dispersity of the CGFSGB were increased after modification by KH570 and HCl, and the PP/CGFSGB‐A composites showed better performance than PP/CGFSGB‐S. Surface area and pore structure analysis and transmission electron microscopy revealed that good mechanical performance of PP/CGFSGB‐A may be attributed to existence of mesopores in CGFSGB‐A. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47803.

Mechanical properties and morphology of coal gasification fine slag glass bead‐filled acrylonitrile–butadiene–styrene (ABS) composites

“…It is worth to found that the loading of CGFSGB‐S3 into the ABS can best enhance the ABS matrix especially in the case of high filler concentrations, and the composite with CGFSGB‐S3 at a filler concentration of 8.34 wt % leads to the highest tensile strength value for the composite systems. The key reason should be that the interfacial adhesion strength between the CGFSGB‐S3 particles and the ABS matrix is considerably good in this case, and the interface may transfer effectively somewhat tensile load, resulting in the tensile strength value changing slightly with increasing the CGFSGB‐S3 weight fractions . This indicates that the interfacial adhesion strength between the CGFSGB and the ABS matrix increases because CGFSGB‐S3 had a smaller particle size distribution after the pneumatic separation.…”

“…In this research, the CaCO 3 was used as the contrast filler. Compared with CGFSGB, the CaCO 3 has the sharp edges and corners . Therefore, the CaCO 3 may cut off the macromolecular chains of the polymer compared to the spherical CGFSGB.…”

“…The CGFS particles were supplied by Shenhua Coal Industry Group Co., Ltd. (Ningxia, China). The CGFSGB was fabricated by the calcination of CGFS . Portions (CGFSGB‐S1, CGFSGB‐S2, and CGFSGB‐S3) of CGFSGB were obtained by an efficient pneumatic separation technique in the laboratory of Jilin University (Changchun, China).…”

“…CGFS glass beads (CGFSGBs) can be obtained from the CGFS. The CGFS particles have been applied in the low‐density polyethylene, and the application of CGFSGB in polypropylene has also been made . The CGFS and CGFSGB have the higher surface reaction activity resulting from their amorphous phase.…”

“…However, the application of CGFSGB in the ABS resin has not yet been reported. The tensile strength only was tested about the mechanical properties mentioned in the literatures, and there have been almost few studies on the impact properties and flexural properties of CGFSGB or CGFS filled composites …”