| 1. | The research on the polypropylene ( pp ) modified with nano - sized sio2 has been attended extensively
利用无机纳米粒子对聚丙烯( pp )改性近年来受到了普遍的关注。 |
| 2. | In this study , the methods of decomposing polyethylene ( pe ) and polypropylene ( pp ) into fuel oil were studied
摘要本文对聚乙烯和聚丙烯的混合物裂解成原料油进行了研究，在440条件下，不同比例的聚乙烯和聚丙烯被裂解。 |
| 3. | We use polypropylene ( pp ) , polyethylene ( pe ) or co - polymers , which is a mixture of different polymers , for our sports yarns . quality raw materials are essential to the quality of sports yarns
我们的运动草丝主要由聚丙烯或聚乙烯组成。优质的原料从根本上保证了草丝的质量。 |
| 4. | The nucleating effects of and nucleating agent on the crystallization behavior of polypropylene ( pp ) were studied by differential scanning calorimetry ( dsc ) and x - ray diffraction spectrum ( xrd )
摘要用差示扫描量热仪和x射线衍射仪对两种类型成核剂改性的聚丙烯的结晶行为进行了表征。 |
| 5. | Polypropylene ( pp ) is one of the popu1ar plastic that has been applied wideiy . but its defect of upper brittleness at low temperature restricts further application of polypropylene
聚丙烯( pp )作为通用塑料的一个大类，在各个领域得到了广泛的应用，但pp的耐冲击性较差，限制了其使用范围。 |
| 6. | Through multi - factor orthogonal experiment , wood fiber / plastic composite was manufactured to study the effects of polypropylene content on properties of wood fiber / plastic composite by using wood fiber and recycled polypropylene ( pp ) and mdi or ma as coupling agent
摘要通过正交试验，以木材纤维和废旧聚丙烯塑料为原料，异氰酸酯或马来酸酐作偶联剂，压制木材纤维聚丙烯复合材料，研究聚丙烯（简称pp ）用量对木塑复合材料性能的影响。 |
| 7. | The production technology , product nature and application of the silane crosslinking polyethylenes ( pe ) , silane crosslinking polypropylenes ( pp ) , silane crosslinking ethylene - propylene rubber ( epr ) , silane crosslinking ethylene - octane copolymer ( poe ) and ethylene - vinyl acetate copolymer ( eva ) are introduced
介绍了硅烷交联聚乙烯，硅烷交联聚丙烯，硅烷交联乙丙橡胶，硅烷交联乙烯辛烯共聚物和乙烯乙酸乙烯共聚物的生产工艺、配方研究、制品的性能及应用等。 |
| 8. | In attempt to prepare and investigate the novel high - performance electrically conductive polymer composites , the binary and multicomponent electrically conductive nanocomposites as well as the combined nano and in - situ composites were prepared with polypropylene ( pp ) served as the matrix , expanded graphite ( eg ) as a conductive filler , nylon 66 ( pa66 ) as a modifier , and maleic anhydride grafted polypropylene as an eg intercalater and the compatibilizer of pp - pa66 , based on the state - of - art development in the realm of polymer / inorganic nanocomposites and polymer / polymer in - situ composites domestically and overseas . the main outcomes are obtained as follows : 1
本论文以制备和研究新型高性能聚合物导电复合材料为目的，跟踪和借鉴国内外在聚合物无机物纳米复合、聚合物聚合物原位复合领域的最新研究成果，制备和研究了以聚丙烯( pp )为基体、膨胀石墨( eg )为导电填料、尼龙66 ( pa66 )为改性剂、马来酸酐接枝聚丙烯( gpp )为eg插层剂和pp ? pa66增容剂的二元及多元导电纳米复合材料和纳米复合与原位复合组合复合材料，取得了以下主要研究成果： 1 |
| 9. | Nonpolar polypropylene has bad compatibility with mmt even after organic modification to mmt . so polypropylene ( pp ) grafting acrylic acid was produced by the suspension grafting method as compatilizer . as pp / mmt nanocomposites prepared from htab modified mmt as concerned , the interlayer spacing of mmt is 4 . 61nm , 4 . 2nm and 4 . 09nm respectively when the mmt content is 1 % , 2 % and 3 % . so , the abtained nanocomposites has intercalated structure
当土含量为2 ，相容剂用量为15时力学性能最好，缺口冲击强度和拉伸强度分别达到16 . 45kj m ~ 2和35 . 77mpa ，分别比纯pp增加了280和4 . 3 ，蒙脱土的加入起到了增韧和增强的双重作用。 |
| 10. | In this thesis we have studied the toughening and strengthing modifications of polypropylene ( pp ) by nano - particle such as cac03 ) si02 and ti02 . the performance of modified polypropylene and the modifying mechanism have been introduced . we have also explored the furthest dosage of titanate coupling agent in cac03 / pp and the influence of coupling agent to the composites by the determination of the mechanical properties
本课题主要研究纳米caco _ 3 、 sio _ 2和tio _ 2粉体改性聚丙烯( pp )后材料的力学性能及其增强机理，同时还对钛酸酯偶联剂改性纳米caco _ 3粒子的最佳含量以及偶联剂的加入对复合材料的力学性能的影响进行了研究，并对纳米caco _ 3粒子和微米caco _ 3粒子分别填充pp的力学性能进行了比较分析。 |
