| 1. | Preparation of ultra - fine calcium silicate using airflow - smash 气流粉碎法制备超细硅酸钙粒子的研究 |
| 2. | Preparation of ultrafine dolomite powders by ultrafine air jet mill and classification system 白云石的超细气流粉碎与分级加工 |
| 3. | Determination and control of product size for a ultrafine milling - classifying closed loop system 超细气流粉碎分级系统产品粒径的确定与控制 |
| 4. | The massive tripoli is a kind of soft siliceous rock which is composed of cryptocrystalline quartz . the rock could be prepared for active ultra - fine quartz by airflow pulverization and surface modification . the ultra - fine siliceous powder is a kind of high - quality filler in plastics and rubber 块状硅土矿是一种由隐晶质石英组成的松软硅质岩,通过气流粉碎与表面改性制备出的活性超细石英粉是一种优质的橡塑填料。 |
| 5. | 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 通过sem 、 tem 、 ftir和dsc测试表明:气流粉碎制得的pvc微粉中具有不规则纳米晶体;气流粉碎破坏了pvc的晶体结构,使纳米晶pvc的熔点从210下降到128 ;纳米晶pvc使体系塑化时间、平衡转距的降低、最大转距升高,具有自增塑作用。 |
| 6. | The test results show that the whiteness of high - grade grammite powder can be increas4ed from 72 to 84 by using single high - intensity magnetic separation , and the one of low - grade grammite powder containing carbonaceous materials from 62 to about 81 by using the hims - airflow pulverising - flotation flowsheet 试验结果表明,采用单一强磁选方法可将硅灰石富矿粉的白度由72提高到84 ;采用强磁选-气流粉碎-浮选新工艺可将含碳质物的硅灰石贫矿粉的白度由62提高到81左右。 |
| 7. | It has not only better physics machine function , but also better bio - compatibility , bone - combined character than bio - metal and alloys , bio - ceramics and bio - macromolecule etc . making use of the water heat synthesization method , air current comminution method and classification filtration composite technique has preparated even crystal of ha , average particle size is 280nm 本文研制了无机纤维增强pmma ha人工颅骨复合材料,该复合材料与金属材料、陶瓷材料和高分子材料相比,不仅具有良好的物理机械性能,而且具有良好的生物相容性和骨结合特性。利用水热合成法、气流粉碎法和分级筛分等多种技术制备了粒径均一的ha晶体,平均粒径为280nm 。 |
| 8. | We are specialized in production of a wide range of cauldron - using and pump - using machinery seal pieces , agitated drives , and development and design of a variety of non - standard seal pieces , and fluidized - bed jet mill , inert gas protection jet mill system , on - line test intelligent jet mill system , deep - cold jet mill system , and so on 专业生产各种釜用、泵用机械密封、搅拌密封传动装置,以及研制、设计各种非标准密封;流化床气流粉碎机,在线检测气流粉碎系统,惰性气体保护气流粉碎系统,深冷粉碎系统等气流粉碎机。 |
| 9. | These studies have shown significant results : to protect wollastonite ' s crystal structure , we can forge and then cool it before fining ; adopting mechanochemical modification by jet mill , we can make wollasonite to fine and modification at the same time ; in order to understand thoroughly the major results achieved in enhancement of mechanical capabilities of the polypropyl ene filled with the modified wollastonite , this paper has researched deeply the interface mechanism through combining experiments and measure means with theory analysis , and tried to give a further explanation and demonstration about improving of the macroscopic mechanics performances of composite material and to offer a theoretical basis for improving material ' s mechanical properties 特别是采用粉碎前对硅灰石煅烧空冷处理的方式,获得了超细化程度更高、长径比更大的硅灰石;利用机械力化学改性及超音速气流粉碎技术,使硅灰石粉碎?改性同时完成;应用现代测试手段,结合实验对界面微观形貌、结构及其机理进行研究,进一步解释与论证了复合材料的宏观力学性能,为改善复合材料的综合性能提供了理论基础。这些方面的研究在同类研究中具有一定的创新性。 |
| 10. | 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 掳 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 通过sem 、 tem 、 ftir和dsc测试表明:气流粉碎制得的pvc微粉中具有不规则纳米晶体,尺寸在80nm左右;气流粉碎破坏了pvc的晶体结构,使纳米晶pvc的熔点从210下降到128 ;纳米晶pvc使体系塑化时间、平衡转距降低、最大转距升高,具有自增塑作用;纳米晶pvc的加入使pvc的冲击和拉伸强度都有大幅度上升。 |