-
摘要:
这是一篇矿物材料领域的论文。以-2.6 μm粉煤灰为原料，通过马弗炉在815 ℃下煅烧2 h得到煅烧粉煤灰。采用SEM、EDS、XRF、FTIR、XRD、BET对粉煤灰和煅烧粉煤灰的微观形貌、EDS能谱、粒度、红外光谱、物相组成以及比表面积-孔径进行了表征。按5%填充量将煅烧粉煤灰填充尼龙6制备了尼龙6/煅烧粉煤灰复合材料，采用扫描电镜仪分别对纯尼龙6和复合材料拉伸断面进行了分析，并测试了复合材料的力学性能、熔融指数和热变形温度。结果表明：煅烧对粉煤灰结构影响不大，只是除去了表面碳；煅烧粉煤灰填充尼龙6不会引发内应力；尼龙6/煅烧粉煤灰复合材料，除了缺口冲击强度和熔融指数比纯尼龙6有所下降外，其他性能均比纯尼龙6有大幅度提高，其中拉伸强度提高7.7 MPa，弯曲强度提高26.9 MPa，弯曲模量提高284 MPa，热变形温度提高46.2 ℃。
Abstract:This is a paper in the field of mineral materials. Fly ash (-2.6 μm) was used as raw material and calcined in muffle furnace at 815 ℃ for 2 h to obtain the calcined fly ash. The micro-morphology, EDS spectrum, particle size, infrared spectrum, phase composition and specific surface area-aperture of fly ash and calcined fly ash were characterized by SEM, EDS, XRF, FTIR, XRD and BET. The nylon 6/calcined fly ash composite was prepared by filling nylon 6 with 5% calcined fly ash, the tensile section of pure nylon 6 and the composite was analyzed by scanning electron microscope, and the mechanical properties, melting index and heat distortion temperature of the composite were tested. The results show that the calcination has little effect on the structure of fly ash, just remove the carbon of surface; Calcined fly ash filling in nylon 6 will not cause internal stress; Compared with the pure nylon 6, the nylon 6/calcined fly ash composite has significantly improved properties except the impact strength and melt index, in which the tensile strength, bending strength, bending modulus, bending modulus and heat distortion temperature are increased by 7.7 MPa, 26.9 MPa, 284 MPa and 46.2 ℃, respectively.
-
Key words:
- Fly ash /
- Mineral materials /
- Calcined fly ash /
- Nylon 6 /
- Mechanical properties /
- Heat distortion temperature
-
-
表 1 粉煤灰和煅烧样各元素的重量和原子百分比/%
Table 1. Weight and atomic percentage of elements of fly ash and calcined fly ash
名称 粉煤灰 煅烧样 C 7.26 11.86 31.65 42.05 O 48.85 59.86 45.02 44.91 Mg 0.58 0.47 0.24 0.16 Al 15.58 11.32 9.94 5.88 Si 17.56 12.25 10.62 6.03 Ca 1.54 0.75 0.74 0.30 Na 0.39 0.33 0.16 0.05 
下载: 导出CSV
表 2 粉煤灰和煅烧样比表面积和孔径
Table 2. Specific surface area and pore size of fly ash and calcined samples
名称 粉煤灰 煅烧样 BET比表面积/(cm2·g-1) 2.64 1.71 t-plot比表面积/(cm2·g-1) 2.26 1.45 t-Plot微孔体积/(cm3·g-1) 0 0 BET平均孔径/nm 8.17 10.09
下载: 导出CSV
表 3 纯尼龙6和煅烧粉煤灰填充PA6力学性能
Table 3. Mechanical properties of pure nylon 6 and calcined fly ash filling in PA6
名称 纯尼龙6 煅烧粉煤灰填充尼龙6 缺口冲击强度/（kJ·m-2） 9.72 6.05 拉伸强度/MPa 61.3 69.0 弯曲强度/MPa 83.1 110.0 弯曲模量/MPa 2450 2734 热变形温度/℃ 120.5 166.7 熔融指数/（g·min-1） 2.57 1.87
下载: 导出CSV
-
[1] 邹萍. 粉煤灰水热合成法制备4A型分子筛研究进展[J]. 矿产综合利用, 2020(3):33-39. ZOU P. Research development of 4A zeolite preparation from coal fly ash by hydrothermal synthesis method[J]. Multipurpose Utilization of Mineral Resources, 2020(3):33-39.
ZOU P. Research development of 4A zeolite preparation from coal fly ash by hydrothermal synthesis method[J]. Multipurpose Utilization of Mineral Resources, 2020(3): 33-39.
[2] 于成龙, 熊楠, 宋杰, 等. 近20 年来中国利用粉煤灰合成分子筛研究进展[J]. 矿产综合利用, 2020(4):26-35. YU C L, XIONG N, SONG J, et al. Development of molecular sieves composition from fly ash in China in the last two decades[J]. Multipurpose Utilization of Mineral Resources, 2020(4):26-35. doi: 10.3969/j.issn.1000-6532.2020.04.005
YU C L, XIONG N, SONG J, et al. Development of molecular sieves composition from fly ash in China in the last two decades [J]. Multipurpose Utilization of Mineral Resources, 2020(4): 26-35. doi: 10.3969/j.issn.1000-6532.2020.04.005
[3] 曾威, 陈琪. 细菌纤维素增强PA6/GF复合材料的力学性能研究[J]. 塑料科技, 2018, 46(2):36-40. ZENG W, CHEN Q. Study on mechanical properties of GF/PA6 composites reinforced by bacterial cellulose[J]. Plastics Science and Technology, 2018, 46(2):36-40. doi: 10.15925/j.cnki.issn1005-3360.2018.02.003
ZENG W, CHEN Q. Study on Mechanical Properties of GF/PA6 Composites Reinforced by Bacterial Cellulose[J]. Plastics Science and Technology, 2018, 46(2): 36-40. doi: 10.15925/j.cnki.issn1005-3360.2018.02.003
[4] Buczko Aleksandra, Stelzig Timea, Bommer Lea, et al. Bridged DOPO derivatives as flame retardants for PA6[J]. Polymer Degradation and Stability, 2014, 107:158-165. doi: 10.1016/j.polymdegradstab.2014.05.017
[5] 王佳臻, 蒯平宇, 刘会敏, 等. 国内尼龙6、尼龙66产业的发展现状[J]. 合成纤维, 2021, 50(3):8-11. WANG J Z, KUAI P Y, LIU H M, et al. Development status of nylon 6 and nylon 66 in China[J]. Synthetic fiber in China, 2021, 50(3):8-11. doi: 10.16090/j.cnki.hcxw.2021.03.003
WANG J Z, KUAI P Y, LIU H M, et al. Development status of nylon 6 and nylon 66 in China[J]. Synthetic fiber in China, 2021, 50(3): 8-11. doi: 10.16090/j.cnki.hcxw.2021.03.003
[6] 贾义军, 毕立, 陈国军, 等. 电子元器件壳体用MCA阻燃尼龙6工程塑料研制[J]. 工程塑料应用, 2020, 48(5):34-51. JIA Y J, BI L, CHEN G J, et al. Development of MCA flame retardant nylon 6 for electronic appliance[J]. Engineering Plastics Application, 2020, 48(5):34-51. doi: 10.3969/j.issn.1001-3539.2020.05.007
JIA Y J, BI L, CHEN G J, et al. Development of MCA flame retardant nylon 6 for electronic appliance[J]. Engineering Plastics Application, 2020, 48(5): 34-51. doi: 10.3969/j.issn.1001-3539.2020.05.007
[7] Porabka Anna, Jurkowski Kamil, Laska Jadwiga. Fly ash used as a reinforcing and flame-retardant filler in low-density polyethylene[J]. Polimery, 2015, 60(4):251-257. doi: 10.14314/polimery.2015.251
[8] 李苗苗, 陈平, 李建超. 粉煤灰微珠含量与粒径级配比对环氧树脂基复合材料弯曲性能的影响[J]. 复合材料学报, 2017, 34(2):345-351. LI M M, CHEN P, LI J C. Effect of content and grading ratios of fly ash cenospheres on the flexural properties of the flexural properties of the epoxy resin composites[J]. Acta Materiae Compositae Sinica, 2017, 34(2):345-351. doi: 10.13801/j.cnki.fhclxb.20160612.004
LI M M, CHEN P, LI J C. Effect of content and grading ratios of fly ash cenospheres on the flexural properties of the flexural properties of the epoxy resin composites[J]. Acta Materiae Compositae Sinica, 2017, 34(2): 345-351. doi: 10.13801/j.cnki.fhclxb.20160612.004
[9] Yang Y F, Gai G S, Cai Z F, et al. Surface modification of purified fly ash and application in polymer[J]. Journal of Hazardous Materials, 2006, 133(1-3):276-282. doi: 10.1016/j.jhazmat.2005.10.028
[10] 申柯娅, 王睿, 曾群, 等. 方石英的制备及其热性能测试[J]. 铸造技术, 2013, 34(3):324-326. SHEN K Y, WAN R, ZENG Q, et al. Preparation of cristobalite and testing of its thermal characteristics[J]. Foundry Technology, 2013, 34(3):324-326.
SHEN K Y, WAN R, ZENG Q, et al. Preparation of cristobalite and testing of its thermal characteristics[J]. Foundry Technology, 2013, 34(3): 324-326.
[11] 王彩丽, 王静, 杨润全, 等. 核壳结构粉煤灰基复合粉体制备及填充聚合物的性能[J]. 高分子材料科学与工程, 2020, 36(8):87-92. WANG C L, WANG J, YANG R Q, et al. Preparation of core-shell fly ash based composite and its application in filling polymer[J]. Polymer Materials Science & Engineering, 2020, 36(8):87-92. doi: 10.16865/j.cnki.1000-7555.2020.0189
WANG C L, WANG J, YANG R Q, et al. Preparation of core-shell fly ash based composite and its application in filling polymer[J]. Polymer Materials Science & Engineering, 2020, 36(8): 87-92. doi: 10.16865/j.cnki.1000-7555.2020.0189
-
图(6)
表(3)
计量
- 文章访问数: 1275
- PDF下载数: 171
- 施引文献: 0