Graphite fluoride reinforced PA6 composites: Crystallization and mechanical properties

Sun, Haoyang; Jiang, Feng; Lei, Fan; Chen, Lei; Zhang, He; Leng, Jing; Sun, Dazhi

2018-09

10.1016/j.mtcomm.2018.06.007

Materials Today Communications   影响因子和分区

2352-4928

Graphite fluoride (GrF) platelets were directly incorporated into polyamide 6 (PA6) by simple melt processing without using any surfactant. Due to the hydrogen bonding interaction between the filler and the matrix, GrF at a low loading shows good dispersion and partial exfoliation in PA6, as illustrated by scanning electron microscope and X-ray diffraction (XRD) measurements. The XRD results also reveal that the dominant gamma-crystal in the neat PA6 converts to a relatively high content of alpha-crystal in the composites. Moreover, GrF has been found to be able to promote the mobility of the PA6 molecular chains, then favors the formation of alpha-crystal. Differential scanning calorimetry analysis demonstrates that GrF can act as heterogeneous nucleation agents to improve the onset of the crystallization temperature of PA6. Furthermore, tensile tests show that PA6 with 0.5 wt% GrF has an optimal improvement in elastic modulus and tensile strength by about 21.4% and 9.8%, respectively. Our current studies illustrate that good dispersion and partial exfoliation of GrF platelets in PA6, good adhesion between GrF and PA6, and more stable alpha-crystal formed in the matrix together contribute to the high-performance of the PA6/GrF composites at a low filler loading.

Graphite fluoride Polyamide Dispersion Crystallization Mechanical properties

SCI ; EI

英语

第一 ; 通讯

Foundation of Shenzhen Science and Technology Innovation Committee[ZDSYS20140509142721431] ; Foundation of Shenzhen Science and Technology Innovation Committee[JCYJ20160315164631204] ; Foundation of Shenzhen Science and Technology Innovation Committee[KQJSCX2017 0726145415637] ; Foundation of Shenzhen Science and Technology Innovation Committee[JCYJ20170817110440310]

Materials Science

Materials Science, Multidisciplinary

WOS:000443035000029

ELSEVIER SCIENCE BV

20184906174473

Crystallization ; Differential scanning calorimetry ; Dispersion (waves) ; Dispersions ; Fillers ; Fluorine compounds ; Hydrogen bonds ; Mechanical properties ; Nucleation ; Platelets ; Polyamides ; Scanning electron microscopy ; Tensile strength ; Tensile testing ; X ray diffraction

Biology:461.9 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Organic Polymers:815.1.1 ; Crystal Growth:933.1.2 ; Temperature Measurements:944.6 ; Materials Science:951

Web of Science

Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Nanoimprint Technol, Shenzhen 518055, Guangdong, Peoples R China

Sun, Haoyang,Jiang, Feng,Lei, Fan,et al. Graphite fluoride reinforced PA6 composites: Crystallization and mechanical properties[J]. Materials Today Communications,2018,16:217-225.

Sun, Haoyang.,Jiang, Feng.,Lei, Fan.,Chen, Lei.,Zhang, He.,...&Sun, Dazhi.(2018).Graphite fluoride reinforced PA6 composites: Crystallization and mechanical properties.Materials Today Communications,16,217-225.

Sun, Haoyang,et al."Graphite fluoride reinforced PA6 composites: Crystallization and mechanical properties".Materials Today Communications 16(2018):217-225.