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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.cnt//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.cnt//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.cnt//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.cnt//ss/lixs/publicationsshow_3118.html |
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Preferential Intercalation Behavior of Clay and Its Effect on the Thermal Degradation in Immiscible Pp/Ps Blends
Preferential Intercalation Behavior of Clay and Its Effect on the Thermal Degradation in Immiscible Pp/Ps Blends.
http://www.polymer.cnt//ss/mahy/publicationsshow_2949.html |
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纳米Al(OH)3/PP复合材料性能与结构研究
采用双螺杆造粒,单螺杆挤出制样的方法制备了纳米Al(OH)3/PP复合材料。通过TEM及力学性能测试研究了复合材料的力学性能和Al(OH)3的分散状况。在纳米Al(OH)3/PP复合体系中,纳米Al(OH)3的加入,不但提高了复合材料的冲击强度,而且显著提高了复合材料的弯曲弹性模量。纳米Al(OH)3的增韧机理在于纳米Al(OH)3作为应力集中点诱发大量银纹,吸收大量的冲击能量。
http://www.polymer.cnt//ss/wangwenyi/publicationsshow_2438.html |
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纳米CaCO3/EPR/PP复合材料性能与结构研究
采用双辊混炼和挤出制样的方法制备了PP/EPR/纳米CaCO3复合材料。通过PCM、SEM、TEM及力学性能测试研究了复合材料的力学性能及EPR和CaCO3粒子的分散状况。结果表明，当纳米CaCO3粒子的含量为10％时，共混体系的冲击强度最高，为50.3KJ/m2。通过复合材料的冲击断面进行SEM观察，表明材料发生的是韧性断裂。
http://www.polymer.cnt//ss/wangwenyi/publicationsshow_2434.html |
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