价格行情

20 0 3年 4月份部分工程塑料产品市场参考价格产品名称规格型号产地价格 (元 /吨 )PCIR2 2 0 0等进口 2 6 0 0 0PC 14 1R - 111进口 30 0 0 0PCK130 0进口 2 6 0 0 0超高分子量聚乙烯管材轧辊国产 950 0超韧PP/EPDM合金KHPP -E2 50国产 130 0 0超韧PP/EPDM合金KHPP -E2 6 0国产     

工业利润延续快速增长势头——国家统计局工业司何平博士解读2018年1-5月份工业企业利润数据

国家统计局6月27日发布的工业企业财务数据显示,2018年1-5月份,全国规模以上工业企业利润同比增长16.5％,增速比1-4月份加快1.5个百分点;其中,5月份增长21.1％,比4月份增速减缓0.8个百分点,延续了快速增长的势头. 一、供给侧结构性改革成效持续显现 一是成本下降.1-5月份,规模以上工业企业每百元主营业务收入中的成本费用为92.59元,同比下降0.35元;其中,每百元主营业务收入中的成本为84.49元,同比下降0.31元.     

TPV和纳米CaCO3协同增韧聚丙烯的研究

首先采用熔融共混法制备聚丙烯/热塑性动态硫化橡胶(PP/TPV)二元共混物,进一步添加纳米CaCO₃制备了PP/TPV/纳米CaCO₃三元共混物。探究了TPV用量对PP/TPV二元共混物力学性能和微观形貌的影响,以及纳米CaCO₃用量对PP/TPV/纳米CaCO₃三元共混物的力学性能、微观形貌、耐热性能及晶型的影响。结果表明,TPV能够有效增韧PP,当TPV用量仅为5份时,PP/TPV二元共混物的冲击强度达到8.2kJ/m²,较PP增加了95%,同时拉伸强度仅下降了4%;纳米CaCO₃能够诱导PP中β晶型的生成,随着纳米CaCO₃在PP/TPV/纳米CaCO₃三元共混物中用量的增加,缺口冲击强度呈现先增加后下降的趋势,而拉伸强度变化不大。当纳米CaCO₃用量为3份时,三元共混物的抗冲击性能最好,同时耐热性能也得到提升,可应用于汽车、建筑等行业。     

2014年3-4月份工业气体市场走势概述

<正>2014年3-4月份液氧、液氮、液氩以及二氧化碳市场都出现了先扬后抑的走势。据了解,液氧在3月市场飘红,4月份出现下降趋势,截至4月下旬,全国均价在504元/吨,同比下降13.40%;3月液氮价格接连走高下游抵触再现,但是4月份液氮行情逐步转弱;液氩市场3月均价在635元/吨,环比提高12.39%,截至4月下旬,全国均价在788元/吨,同比则大幅下降50.71%;二氧化碳在3月份市场均价为338.61元/吨,环比上涨8.5%;到了     

TPU增韧PP共混材料的力学性能

利用双螺杆熔融共混挤出方法制备了TPU(热塑性聚氨酯弹性体)增韧PP(聚丙烯)新材料。考察了两种聚酯型TPU(TPU1和TPU2)和两种增容剂[三元乙丙橡胶接枝马来酸酐(EPDM-g- MAH)和乙烯-辛烯共聚物接枝马来酸酐(POE-g-MAH)]对PP/TPU的力学行为的影响。结果表明,TPU2较TPU1能更有效的改善PP的缺口冲击强度,TPU1则使PP/TPU保持较高的强度和刚性保留率,且加入5质量份的TPU较为适宜;加入适量的EPDM-g-MAH较POE-g-MAH可以更有效地改善PP/TPU的韧性、强度和刚度。     

PP/POE/高岭土三元复合材料的力学及热性能

研究了高岭土和乙烯-辛烯共聚物弹性体(POE)填充聚丙烯(PP)制备的PP/POE/高岭土三元复合材料的力学和热力学性能。结果表明,POE和高岭土不能提高PP的拉伸强度,但高岭土可以显著提高PP/POE的杨氏模量。POE降低了PP的弯曲强度和弯曲模量,但PP/POE/高岭土三元复合材料的弯曲强度和弯曲模量显著高于PP/POE和PP。POE和高岭土可以显著提高PP的冲击强度,当高岭土和POE的填充份数分别为10份和5份时,PP/POE/高岭土复合材料的冲击强度最大。高岭土的添加可以提高PP的结晶温度,加快PP的结晶速率,促进PP的异相成核。合适含量的高岭土可以提高PP的熔融温度,改善PP的耐热性能。     

1-4月仪器仪表制造业实现利润总额198.1亿元

正2018年1-4月份,全国规模以上工业企业实现利润总额21271.7亿元,同比增长15%,增速比1-3月份加快3.4个百分点。其中,仪器仪表制造业实现利润总额198.1亿元,同比增长21.2%。1-4月份,在41个工业大类行业中,29个行业利润总额同比增加,1个行业持平,11个行业减少。主要行业利润情况如下:煤炭开采和洗选业利润总额同比增长15.5%,石油和天然气开采业增长2.1倍,农副食品加工业增长2.1%,纺织业增长1%,石油、煤炭及其他燃料     

质量检验稳定合格产品

福建建阳丽阳人造板有限责任公司建阳丽阳人造板有限责任公司建于2000年4月,现有年产5万m~3中纤板生产线二条和年产5万吨甲醛生产线一条。2000年底,生产中纤板1.8万m~3,产值达到1800万元,实现税利500万元。配套的甲醛生产线于2001年4月开始筹建,8月份投入生     

2013年液氧、液氮、液氩市场走势回顾

<正>2013年国内经济形势疲软,大宗商品走势低迷,对工业气体支撑乏力,加之国内空分产能急剧扩张,供需失衡的日益严重,市场竞价激烈,气体市场整体表现不佳。2013年,液氧月均价534元/吨,最高点出现在4月份为582元/吨,月均价最低点出现在2月份,为496元/吨。液氮年均价则在551.17元/吨,年内最高点出现在5月份,月均价584.58元/吨。2013年液氩市场价格涨跌最为剧烈,3月下旬随着下游生产逐渐恢复,气价暴涨,全国均价曾最高涨至1620元/吨,至12月份均价     

埃克森美孚化工在Chinaplas2010中国国际橡塑展上向亚太区推出3个聚丙烯新牌号

埃克森美孚化工在7010年4月19-22日上海Chinaplas 2010中国国际橡塑展期间,向亚太区新推出了3个聚丙烯牌号：ExxonMobil^TM PP7555KNE2、PP7684KN和PP7032KN聚丙烯树脂。这些抗冲共聚物能够增强性能,同时可通过缩短生产周期和提高生产率降低成本,因此非常适合于亚太市场。     

Shrinkage reduction and morphological characterization of PP reinforced with glass fiber and nanoclay using functionalized PP as compatibilizer

This work presents results of shrinkage and structure characteristics of reinforced PP using combinations of glass fiber and nanoclay with functionalized PP as compatibilizer during injection molding. Shrinkage, warpage and structure characteristics of clay-fiber reinforced nanocomposites using PP grafted with 2-[2- (Dimethylamino) ethoxy] ethanol (DMAE) to obtain PPgDMAE as compatibilizer, were analyzed. The glass fiber-nanoclay combinations decrease the PP shrinkage as well as the warpage tendency. Functionalized PP facilitates glass fiber and clay dispersion and intercalation. The crystallization temperature, Tc, increases slightly with respect to pure PP and the degree of crystallinity, Xc, was reduced with the clay content.     

咪唑基离子液体对聚丙烯抗静电性能的影响

以咪唑基离子液体(im i-IL)为抗静电剂与聚丙烯(PP)熔融共混制备出PP/im i-IL共混复合材料,并对材料的抗静电性能、抗静电耐擦洗性能和力学性能进行了测试。结果表明,咪唑基离子液体在显著提高PP的抗静电性能和抗静电剂耐擦洗性能的同时,材料的冲击强度虽略有下降,但拉伸强度提高。     

Anomalous behavior of thermal conductivity and diffusivity in polymeric materials filled with metallic particles

Thermal properties of two composites prepared by using a polypropylene matrix filled with aluminum (slightly oxidized) and copper fillers were investigated. For each of these fillers two different particle sizes were used. We have shown an anomalous thermal behavior when these metallic fillers are slightly oxidized, i.e. higher thermal transport is obtained for PP/Al composites when using the largest particles. So, the PP/Al composites thermal behavior is not consistent with the PP/Cu ones and with the literature results reported for dielectric or conducting filler particles in a polymeric matrix. Thus, these PP/Al composites exhibit higher thermal transport properties than the homopolymer matrix where as electrical insulating properties of PP are preserved. This kind of composite structure might be of great interest in some technological applications where both good electrical insulation and high thermal conduction are required.     

Spatially resolved characterization of cellulose nanocrystal-polypropylene composite by confocal Raman microscopy

Raman spectroscopy was used to analyze cellulose nanocrystal (CNC) -polypropylene (PP) composites and to investigate the spatial distribution of CNCs in extruded composite filaments. Three composites were made from two forms of nanocellulose (CNCs from wood pulp and the nano-scale fraction of microcrystalline cellulose) and two of the three composites investigated used maleated PP as a coupling agent. Raman maps, based on cellulose and PP bands at 1098 and 1460 cm(-1), respectively, obtained at 1 μm spatial resolution showed that the CNCs were aggregated to various degrees in the PP matrix. Of the three composites analyzed, two showed clear existence of phase-separated regions: Raman images with strong PP and absent/weak cellulose or vice versa. For the third composite, the situation was slightly improved but a clear transition interface between the PP-abundant and CNC-abundant regions was observed, indicating that the CNC remained poorly dispersed. The spectroscopic approach to investigating spatial distribution of the composite components was helpful in evaluating CNC dispersion in the composite at the microscopic level, which helped explain the relatively modest reinforcement of PP by the CNCs.     

Improvement of impact property of natural fiber–polypropylene composite by using natural rubber and EPDM rubber

In this research, vetiver grass was used as a filler in polypropylene (PP) composite. Chemical treatment was done to modify fiber surface. Natural rubber (NR) and Ethylene Propylene Diene Monomer (EPDM) rubber at various contents were used as an impact modifier for the composites. The composites were prepared by using an injection molding. Rheological, morphological and mechanical properties of PP and PP composites with and without NR or EPDM were studied. Adding NR or EPDM to PP composites, a significant increase in the impact strength and elongation at break is observed in the PP composite with rubber content more than 20% by weight. However, the tensile strength and Young’s modulus of the PP composites decrease with increasing rubber contents. Nevertheless, the tensile strength and Young’s modulus of the composites with rubber contents up to 10% are still higher than those of PP. Moreover, comparisons between NR and EPDM rubber on the mechanical properties of the PP composites were elucidated. The PP composites with EPDM rubber show slightly higher tensile strength and impact strength than the PP composites with NR.     

聚丙烯/蒙脱土纳米复合材料的非等温结晶动力学研究

采用DSC研究了聚丙烯及聚丙烯／蒙脱土纳米复合材料的非等温结晶行为。结果表明,纳米分散的硅酸盐片层在很少的加入量时即可提高复合材料的结晶度,使复合材料的结晶温度升高,与此同时,无机物含量仅为1％时即可明显加快复合材料的结晶速率。     

纳米碳酸钙改性聚丙烯共聚物的非等温结晶动力学

用DSC手段考察了反应釜内原位共聚制备的含有成核剂及纳米碳酸钙的聚丙烯(PP)共聚物的非等温结晶行为。结果表明，成核剂使PP共聚物的结晶温度升高，结晶度降低，结晶速率略有提高。而纳米碳酸钙则大幅提高了PP共聚物的结晶温度和结晶速率，结晶度也增加了约10％。并采用Ozawa法和Caze法描述了非等温结晶动力学。     

纳米蒙脱土/聚丙烯复合材料热氧老化动力学

对熔融插层法所制备的纳米蒙脱土/聚丙烯（OMMT1/PP）复合材料, 分别在100℃、 110℃、 120℃进行0～12d的热氧老化, 考察其热性能、 热稳定性、 拉伸强度的衰减及其动力学。TG、 DSC、 FTIR分析结果表明: 纳米OMMT1/PP复合材料比PP的热分解温度升高37℃, 结晶度由51%提高到71%, 而且有机化的纳米MMT片层与PP之间存在较强的作用, 因此热氧作用的C O吸收峰明显弱化, 表面轻微开裂。100～120℃老化后OMMT1/PP的强度保持率大大优于纯聚丙烯材料（8~22倍）, OMMT1/PP 110℃老化12d后拉伸强度仍然达54％。建立了以拉伸强度?问腛MMT1/PP热氧老化的一级反应动力学方程, 其热氧老化反应的活化能为52.3kJ/mol, 为PP的1.7倍。分析认为: OMMT1/PP较高的活化能值以及优良的抗热氧老化能力来自其剥离型纳米化MMT片层对PP的力学?ぷ饔谩?物理阻隔效应以及OMMT1与PP之间化学交互作用的综合结果。      

碱式硫酸镁形貌对碱式硫酸镁/聚丙烯复合材料力学性能的影响

以三种不同形貌的碱式硫酸镁(颗粒状(MOS_P)、晶须状(MOS_W)和扇形(MOS_S))为填料、月桂酸(LA)为改性剂、聚丙烯(PP)为树脂基体,通过熔融共混法制备了系列MOS/PP复合材料。SEM结果显示,改性后的MOS_P和MOS_W在基体中分散均匀,但与基体PP的相容性依然较差;MOS_S/PP样品中同时存在着尺寸较大且形貌复杂的MOS_S和部分分散的MOS_W,界面缺陷更加明显。广角X-射线衍射(WXRD)结果表明,三种MOS均能诱导β-晶型PP的产生,与月桂酸的加入无关,其中MOS_P诱导效果更明显。力学性能测试结果表明,三种形貌MOS的加入稍降低了基体的屈服强度,一方面是MOS与基体相容性差,另一方面归结于β-晶型PP生成;相比之下,MOS_W加入能较好地保持PP基体的屈服强度和拉伸断裂韧性,且明显增强基体的模量,主要归因于MOSW较大的长径比;MOS_P对基体的增韧效果更为明显,一方面是由于MOS_P诱导生成β-晶型PP的效果强于MOSW和MOS_S,另一方面则可能是由于MOS_P较大的比表面积附着了较多的脂肪酸盐,其增塑效果更强。     

Fracture behaviour of virgin and recycled isotactic polypropylene

Fracture behaviour of virgin and six times recycled isotactic polypropylene (PP) has been studied. Instrumented Charpy impact tests have been carried out to characterise the fracture parameters and scanning electron microscopy was used to study the fracture surfaces. Recycled PP presents slightly smaller spherulites and lower fracture toughness than virgin one. Fractography analysis reveals that crazing is the dominant fracture micromechanism for both materials, and that the difference in fracture toughness is a consequence of the smaller plastically deformed volume at the notch tip of the recycled polypropylene.