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反应增容PP/PA 6共混体系的形态与性能
兰 杰 尹 波 杨鸣波 冯建民
(四川大学高分子科学与工程学院，高分子材料工程国家重点实验室，四川成都，610065)
摘要：采用侧向注入增容剂和直接混合的方法制备了不同配比的聚丙烯(PP)/马来酸酐接枝聚丙烯(PP-g-MAH)/聚酰胺(PA)6共混物。考察了侧向注入和直接混合2种增容方式对PP/PP-g-MAH/PA 6共混体系形态与性能的影响。结果表明：加入PP-g-MAH可...
http://www.polymer.cn/Industry/industry2316.html |
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MAH/St/PP熔融接枝研究
关键字：MAH,熔融,接枝,研究,
张才亮，冯连芳**，许忠斌（浙江大学 化学工程联合国家重点实验室聚合反应工程分室，杭州 310027） HU Guo Hua (胡国华) Laboratory of chemical engineering sciences, CNRS-ENSIC-INPL 1 rue Grandville BP 451, 54001 Nancy, France **通讯联系人：冯连芳， E-mail：fenglf@mail.hz.zj.cn
摘要：在哈克流变仪和双螺杆挤出机对苯乙烯(St)/马来酸酐(MAH)/聚丙烯(PP)熔融接枝进行了研究。实验表明当只改变St用量时，MAH接枝率在St...
http://www.polymer.cn/Industry/industry1277.html |
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PP均聚物知识介绍
关键字：均聚物,知识,介绍,
聚丙烯（PP）作为热塑塑料聚合物于1957年开始商品化生产，是有规立构聚合物中的第一个。其历史意义更体现在，它一直是增长最快的主要热塑性塑料，1991年它的世界总产量达到240亿磅。它在热塑性塑料领域内有十分广泛的应用，特别是在纤维和长丝、薄膜挤压、注塑加工等方面。
化学和性质
PP是以金属有机有规立构催化剂（Ziegler－Natta型），使丙烯单体在控制的温度和压力条件下合成的。因所用催化剂和聚合工艺不同，所得聚合物的...
http://www.polymer.cn/Industry/industry533.html |
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浅谈PP-R管道的优缺点
关键字：浅谈,管道,优缺点,
PP-R管道是具有九十年代国际水平的新型节能塑料产品，全称无规共聚聚丙烯管道，安装和使用的优缺点如下：
A．优点：
1． 对人类健康无害，对水中的所有离子和建筑物内的化学物质均不起化学反应，与金属管道相比不会生绣，不会腐蚀，并具有高度的耐酸性和耐氯化物性。
2． 属于绿色可持续发展产品，在生产、施工、使用过程中对环境无污染。可...
http://www.polymer.cn/Industry/industry455.html |
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聚丙烯/玻璃钢（PP/FRP）复合管及管件
本标准规定了聚丙烯/玻璃钢（PP/FRP）复合管道及管件的公称压力、公称通径、规格和尺寸、连接结构、技术条件、检验、标志、包装、运输、储存。
本标准适用于以聚丙烯管（以下简称PP管）为内衬、外缠玻璃纤维或其织物的增强塑料玻璃钢为加强层（以下简称FRP）的复合管道及管件。使用介质范围与聚丙烯管相同，主要用于输送酸碱、盐等腐蚀性介质，也可用于输送饮用水。
http://www.polymer.cn/Industry/bz799.html |
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无规共聚聚丙烯（PP-R）管材及管件
本规范适用于国家及省级质量技术监督部门组织的无规共聚聚丙烯（PP-R）管材及管件产品质量监督抽查，其他质量技术监督部门组织的及针对特殊情况的监督抽查可参考本规范执行。监督抽查产品范围包括冷热水用无规共聚聚丙烯（PP-R）管材和冷热水用无规共聚聚丙烯（PP-R）热熔承插连接管件。本规范内容包括产品分类、术语和定义、企业规模划分、检验依据、抽样、检验要求判定原则及异议处理复检
http://www.polymer.cn/Industry/bz415.html |
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Enhanced thermal conductivity of polyamide 6/polypropylene (PA6/PP) immiscible blends with high loadings of graphite
Abstract: In this study, flake graphite was dispersed in immiscible polyamide 6/polypropylene (PA6/PP) blends to improve their hermal conductivity. Blends of PA6/PP were prepared in different relative fractions and thermal conductivity of the graphite-containing blends showed enhanced values for immiscible blends when compared with those of mono-PA6-based composites at the same graphite lo...
http://www.polymer.cn//ss/zouhuawei/publicationsshow_13538.html |
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【Polym Bull】Preparation of PP-g-PEG by using partial pre-irradiated polypropylene as initiator and its properties
Polypropylene (PP) grafted with poly(ethylene glycol) acrylate (PEG acrylate) was prepared through melting reaction with partial pre-irradiated PP (rPP) as initiator and its properties were investigated. Along with the increase of the PEG acrylate content, the grafting degree of functionalized PP increased, while the degradation of PP was accordingly alleviated. The PEG grafts on the PP backbones ...
http://www.polymer.cn//ss/shihengchong/publicationsshow_8880.html |
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Effects of carbon nanotubes on thermal stability and flame retardancy of intumescent flame retarded PP
Flame retardant mixtures of carbon nanotubes (CNTs) and intumescent flame retardant (IFR) were embedded in polypropylene (PP) to investigate what will happen if the additives exhibit two different flame retardation mechanisms. TEM tests showed that CNTs dispersed homogenously in PP matrix without any visible agglomeration. The effects of CNTs on thermal stability and flammability of PP were invest...
http://www.polymer.cn//ss/zpfang/publicationsshow_3418.html |
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Galactosylated N-2-Hydroxypropyl Methacrylamide- b- N-3-Guanidinopropyl Methacrylamide Block Copolymers as Hepatocyte- Targeting Gene Carriers. Bioconjugate Chemistry, 2011, 22 (8), pp 1503–1512
As alternatives of viral and cationic lipid gene carriers, cationic polymer-based vectors may provide flexible chemistry for the attachment of targeting moieties. In this report, galactosylated N-2-hydroxypropyl methacrylamide-b-N-3-guanidinopropyl methacrylamide block copolymers (galactosylated HPMA-b-GPMA block copolymers, or abbreviated as GHG) were prepared in order to develop hepatocyte targe...
http://www.polymer.cn//ss/lixs/publicationsshow_3118.html |
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