一种高耐磨性碳纤维用乳液上浆剂及其制备和应用

该发明公开了一种高耐磨性碳纤维用乳液上浆剂,其特征在于,包括主剂与去离子水,主剂与去离子水质量比为(30∶70)~(50∶50),所述的主剂由以下组成:芳香族聚酯多元醇55~75 wt%,双酚F环氧树脂10~30 wt%,非离子表面活性剂11~15 wt%,抗氧化剂0.5~1.5 wt%,流平剂0.5~1.5 wt%。采用该发明的碳纤维用乳液上浆剂上浆后的碳纤维耐磨性高,可降低织造过程中产生的起毛和断丝,极大地提高了生产效率,降低生产和维护成本。该发明还公开了上述碳纤维用乳液上浆剂的制备方法和使用方法。     

不同上浆剂对碳纤维丝束性能的影响

用3种不同厂家的上浆剂对碳纤维表面进行上浆,测试和比较了3种上浆剂对碳纤维宏观形貌、光泽度、扩散性、毛丝量、硬挺度等表观性能的影响,并对碳纤维与环氧树脂的接触角和界面剪切强度进行测试.结果表明:在同样上浆条件处理下,松本上浆剂处理后碳纤维的集束性强,纤维间抱合力大,与环氧树脂的界面剪切强度为75.59 MPa;上海有机化学研究所上浆剂处理后碳纤维的性能已经接近于松本上浆剂,甚至在某些方面上超过松本上浆剂,其与环氧树脂的界面剪切强度高达77.54 MPa.     

中长股线免上浆工艺的思考

为减低生产成本,我公司对中长股线免上浆技术进行了研发思考,认为解决静电问题,上抗静电剂;控制好纱线的回潮率;抗静电剂及回潮必须均匀就可能解决免上浆技术。并计算了免上浆后产生的经济效益。     

上浆剂对碳纤维增强尼龙66复合材料结构性能的影响

纤维表面上浆剂是复合材料界面性能乃至力学性能的重要影响因素.选用表面为环氧浆料的碳纤维(ERCF)和自配聚氨酯浆料的碳纤维(PUCF),分别与尼龙66(PA66)共混制备成碳纤维增强PA66复合材料(CFRPA66),并测试其相关性能.结果表明:在碳纤维体积分数相近时,由PUCF制备的CFRPA66比ERCF制备的CFRPA66拉伸强度、弯曲强度和缺口冲击强度分别提高了18.7%,20.5%和5.7%.研究结果证明了聚氨酯上浆剂对碳纤维和PA66的界面有更好的增强效果.     

PLA纤维纱线浆纱工艺研究

针对PLA纤维纱线的特点，选用马铃薯变性淀粉K5为主浆料，PVA、聚丙烯酸为辅，蜡片为助剂，制定了3种经纱上浆配方，对其浆液性能、浆膜性能和浆纱性能及其他指标进行测试。对比分析，得出了PLA纤维纱线上浆的最佳工艺路线。用马铃薯变性淀粉K5替代PVA ，既满足了PL A纤维纱线上浆要求，也减少了环境污染。     

有机硅改性聚丙烯酸酯浆料研究

本文探讨了有机硅改性聚丙烯酸酯乳液的制备条件,并考察了其用作经纱上浆用浆料的各项浆液浆膜性能。结果表明,有机硅改性聚丙烯酸酯浆料的最佳合成条件为:温度80℃,引发剂用量2.0%,搅拌速度400转/min和有机硅用量0.25%。有机硅单体的引入,可使浆纱的耐磨性得到提高,但随着有机硅含量的增加,浆膜性能下降。     

用稻草,玉米皮生产羧甲基纤维素钠

羧甲基纤维素钠是生产分散剂、乳化剂、增稠剂、胶粘剂、上浆剂等的主要化工原料,也是生产治疗哮喘病药剂及灌肠剂的主要组份.长期以来,羧甲基纤维素钠都是用棉花生产制成的,造价较高.现介绍一种以稻草、玉米皮等农作物废料制羧甲基纤维素钠的方法,其制作工序如下:     

稻草、玉米皮制作羟甲基纤维素钠

羟甲基纤维素钠是生产分散剂、乳化剂、增稠剂、胶粘剂、上浆剂等的主要化工原料,也是生产治疗哮喘病药剂及灌肠剂的主要成份。长期以来,羧甲基纤维素钠都是用棉花生产制成的,成本较高。如果改用     

左氧氟沙星眼用凝胶的制备

目的:研究左氧氟沙星眼用凝胶的制备及质量控制方法。方法:用卡波普为凝胶基质,左氧氟沙星为主药制备凝胶剂。结果:制备的凝胶剂均匀细腻,粘附性好,质量稳定。结论:该眼用凝胶稳定无刺激,质控可靠,延长了药物对眼睛的作用时间,是一种有临床应用价值的眼科制剂。     

利用稻草、玉米皮生产羧甲基纤维素纳新工艺

羧甲基纤维素钠是生产分散剂、乳化剂、增稠剂、胶粘剂、上浆剂等的主要化工原料,也是生产治疗哮喘病药剂及灌肠剂的主要成分.长期以来,羧甲基纤维素钢都是用棉花生产制成的,造价较高.现介绍一种以稻草、玉米皮等农作物废料制羧甲基纤维素钠的新方法,其制作工序如下:     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with