The self - plasticization and self - reinforcement of nanocrystal pvc was studied , too 同時(shí)發(fā)現(xiàn)納米晶pvc對(duì)pvc具有增塑增強(qiáng)作用。
Simulations of three - dimensional flow fields in metering section of screw during plasticization process 塑化過(guò)程螺桿計(jì)量段三維流場(chǎng)的數(shù)值模擬
The crystal pvc is crashed by jet - mill to prepare nanocrystal pvc . the crash , degradation and the change of morphology and crystalline structure changes of pvc is studied by ftir , sem , dsc , tem . the self - plasticization of nanocrystal pvc is studied , too 用氣流磨對(duì)結(jié)晶pvc進(jìn)行粉碎,制備了納米晶pvc ,研究了在高速氣流作用下pvc的破碎降解、顆粒形態(tài)和微晶結(jié)構(gòu)變化,研究了納米晶pvc對(duì)pvc的增塑作用。
The results show that there is anomalistic crystal whose size reaches nanometer grade in fine pvc ; the crystal structure is damaged by jet - milling , which induces the melting point of nanocrystal pvc decreases from 210 to 128 . the nanocrystal pvc induces the decrease of plasicizing time and equilibrium torque and the increase of maximal torque , which show that the nanocrystal pvc have self - plasticization in pvc composites 通過(guò)sem 、 tem 、 ftir和dsc測(cè)試表明:氣流粉碎制得的pvc微粉中具有不規(guī)則納米晶體;氣流粉碎破壞了pvc的晶體結(jié)構(gòu),使納米晶pvc的熔點(diǎn)從210下降到128 ;納米晶pvc使體系塑化時(shí)間、平衡轉(zhuǎn)距的降低、最大轉(zhuǎn)距升高,具有自增塑作用。
The results showed that there was anomalistic crystal whose size reached nanometer grade in fine pvc ; it ' s about 80nm . the crystal structure was damaged by jet - milling , which induced the melting point of nanocrystal pvc decreased from 210 " c to 128 擄 c . the nanocrystal pvc induced the decrease . of plasicizing time and equilibrium torque and the increase of maximal torque , which showed that the nanocrystal pvc had self - plasticization in pvc composites 通過(guò)sem 、 tem 、 ftir和dsc測(cè)試表明:氣流粉碎制得的pvc微粉中具有不規(guī)則納米晶體,尺寸在80nm左右;氣流粉碎破壞了pvc的晶體結(jié)構(gòu),使納米晶pvc的熔點(diǎn)從210下降到128 ;納米晶pvc使體系塑化時(shí)間、平衡轉(zhuǎn)距降低、最大轉(zhuǎn)距升高,具有自增塑作用;納米晶pvc的加入使pvc的沖擊和拉伸強(qiáng)度都有大幅度上升。