The effects of aramid/carbon on tensile properties of multilayered biaxial weft knitted( MBWK) fabric reinforced composites are analyzed by experiments. The tensile tests are inducted by the SHIMADZU AG-250 KNE univer...The effects of aramid/carbon on tensile properties of multilayered biaxial weft knitted( MBWK) fabric reinforced composites are analyzed by experiments. The tensile tests are inducted by the SHIMADZU AG-250 KNE universal material testing machine and Aramis V6 digital image correlation( DIC) technique.More specifically,the composite samples own four hybrid ratios(Na∶ Nc= 12∶ 0,8 ∶ 4,6 ∶ 6 and 4 ∶ 8). The results showed that the aramid/carbon hybrid MBWK fabric reinforced composites showed nearly linear response until reaching the maximum load and the inserting yarns distribution on the surface of MBWK fabrics reinforced composites had a great influence on the strain pattern distribution. Besides,the tensile strength,the tensile modulus and the elongation at breakage of 0° samples and 90° samples increased with the decreasing of aramid/carbon hybrid ratio. In a word,the changes of tensile strength, tensile modulus and elongation at breakage have a lot to do with the difference of aramid/carbon hybrid ratio.展开更多
在转矩流变仪中通过熔融接枝反应制备了EPDM g GMA,将其与聚丙烯(PP)在双螺杆挤出机中熔融共混。用化学滴定法测定EPDM g GMA的接枝率,用红外光谱对接枝物进行表征,用SEM观察共混物的形态。通过对PP/EPDM g GMA共混物的形态结构和力学...在转矩流变仪中通过熔融接枝反应制备了EPDM g GMA,将其与聚丙烯(PP)在双螺杆挤出机中熔融共混。用化学滴定法测定EPDM g GMA的接枝率,用红外光谱对接枝物进行表征,用SEM观察共混物的形态。通过对PP/EPDM g GMA共混物的形态结构和力学性能的研究发现,随着 EPDM g GMA的含量或温度的增加,PP/EPDM g GMA共混物的缺口冲击强度相应提高,而拉伸强度降低,断裂伸长率相应增加。展开更多
基金Tianjin Municipal Science and Technology Commission for the Financial Supports,China(No.11ZCKFSF00500)China's General Administration of Quality Supervision,Inspection and Quarantine for the Financial Supports,China(No.201210260)
文摘The effects of aramid/carbon on tensile properties of multilayered biaxial weft knitted( MBWK) fabric reinforced composites are analyzed by experiments. The tensile tests are inducted by the SHIMADZU AG-250 KNE universal material testing machine and Aramis V6 digital image correlation( DIC) technique.More specifically,the composite samples own four hybrid ratios(Na∶ Nc= 12∶ 0,8 ∶ 4,6 ∶ 6 and 4 ∶ 8). The results showed that the aramid/carbon hybrid MBWK fabric reinforced composites showed nearly linear response until reaching the maximum load and the inserting yarns distribution on the surface of MBWK fabrics reinforced composites had a great influence on the strain pattern distribution. Besides,the tensile strength,the tensile modulus and the elongation at breakage of 0° samples and 90° samples increased with the decreasing of aramid/carbon hybrid ratio. In a word,the changes of tensile strength, tensile modulus and elongation at breakage have a lot to do with the difference of aramid/carbon hybrid ratio.
文摘在转矩流变仪中通过熔融接枝反应制备了EPDM g GMA,将其与聚丙烯(PP)在双螺杆挤出机中熔融共混。用化学滴定法测定EPDM g GMA的接枝率,用红外光谱对接枝物进行表征,用SEM观察共混物的形态。通过对PP/EPDM g GMA共混物的形态结构和力学性能的研究发现,随着 EPDM g GMA的含量或温度的增加,PP/EPDM g GMA共混物的缺口冲击强度相应提高,而拉伸强度降低,断裂伸长率相应增加。
