改性沥青软化点低是多少

本文考察了尤里卡沥青软化点的物理意义。
This article investigates the physical significance of softening point of Eureka pitch.
本文利用线性回归的方法给出沥青软化点与电阻率和温度的函数关系式。
Using linear regression method, the authors give a function of soft point of bitumen as temperature and resistance.
结果表明,空气氧化和氮气热缩聚可提高石油沥青的软化点、焦产率和正庚烷不溶物含量。
The results showed that both methods of air blowing and thermal polycondensation in the presence of nitrogen raised the asphalt softening points, and increased coke yields and heptane insolubles.
结果表明:TLA均可提高两种基质沥青的软化点,增大其粘度,降低其延度和针入度。
The results obtained are as follows:The softening point and viscosity of two asphalts were increased, while the penetration and ductility were decreased with the introduction of TLA.
聚合物用作改性剂可以提高沥青的软化点,改善沥青的低温柔韧性,提高延度,使沥青产生可逆的弹性变形。
The polymer modifier can improve the performance of the paving asphalt on flexibility at low temperature and reversible elastic deformation.
分析了废弃塑料作为沥青的改性剂对沥青的软化点、脆性、针入度和延度等性能的影响。
The effects of useless plastics as modifier to properties of softening point, brittle point are analyzed.
结果表明:塔河沥青具有软化点和针入度指数高的特点;
Comprising to other paving asphalts, the asphalts derived from Tahe crude oil have higher softening point and penetration index (PI).
结果表明,塔河沥青具有软化点和针入度指数高的特点。
Compared to other asphalts, the Tahe asphalt was found to have higher soft point and penetration index (PI) .
研究了橡胶粉—沥青体系中软化点、柔度、粘度与胶粉掺加量及温度的关系。
Relationships among softing point, flexibility, viscosity, addition of rubber crumb and asphalt temperature ofthe modified asphalt system were studied.
研究了橡胶粉-沥青体系中软化点、柔度、粘度与胶粉掺加量及温度的关系。
The rubber crumb content and asphalt temperature have influence on the softing point, low temperature flexibility, viscosity of the modified asphalt system.
建立了能关联煤沥青组成与软化点之间关系的方程。
A two parameter equation for correlation of coal tar pitch components and their softening points was presented.
采用熔融共混方法,用高软化点硬沥青对聚丙烯进行改性。
Polypropylene(PP)was modified by melt-mixing method, and using high softening point hard asphalt.
同时,老化过程中,沥青针入度、软化点及延度的变化进一步证明了所得动力学模型是可靠的。
The changes of penetration, softening point and ductility of asphalt during aging proved that the kinetic model is reliable.
研究了影响沥青结焦率和软化点(SP)的因素,以确定改进和控制其质量的工艺过程。从不同焦油中得到的沥青结焦率与BI含量呈线性关系。
Factors influencing the coke yield and the softening point(SP) of pitches were studied to ascertain procedures for the improvement and control of their quality.
较低软化点的石油沥青球比煤沥青球表面更易于刻蚀更难于氧化稳定化。
The coal tar pitch spheres was easy to be stabilized compared with the petroleum pitch spheres when they had similar softening point and naphthalene content.
以再生沥青的针入度、软化点、延度为控制指标,确定了再生剂的最佳含量。
Take additives the asphalt the penetration, the softening point, the ductility as the control target, had determined the additives proportion.
通过选择适当的原沥青,对其进行加速老化试验,测试其在不同老化时间下的针入度、延度、软化点,分析沥青的老化趋势。
The penetrability, ductility, softening point of bitumen at different aging times are tested to analyze the aging trend of bitumen.
采用沥青薄膜加热试验和紫外线老化试验,对沥青的针入度、软化点、延度和粘度等性能指标进行了试验研究。
By thin film oven test and ultraviolet photooxidation test, asphalt performance indices were studied, including penetration, softening point, ductility and viscosity.
结果表明,随着反应温度的提高,改性煤沥青的收率、软化点、残炭率和密度都呈现上升的趋势;
The results indicate that when reaction temperature is increased, the yield, the softening point, the carbon yield and the density of oligomers are also improved;
随着改性剂的增加,改性沥青针入度降低,软化点升高,PI提高;
Along with the modifier increasing, the penetration degree of the modified asphalt reduces, the softening point elevates and PI index enhances;
详细研究了化学改性对SBR改性乳化沥青主要性能包括软化点、针入度和低温延度的影响规律。
It studies the orderliness of chemical modification to asphalt's performances that include softening point, penetration and low temperature ductility.
考察了能成纤维的中间相沥青的显微结构、软化点范围、中间相含量及在各种不同溶剂中的溶解性。
The microstructure of the intermediate bitumen, the range of softening point, the content of the intermediates and the solubility in several solvents of the intermediate bitumen were investigated.
结果表明,随着SBR用量的增大,改性沥青高温时的粘度、软化点和弹性恢复率均增大;
The results showed that the viscosity, softening point and elastic recovery of modified asphalt at elevated temperature increased as the addition level of SBR increased;
一种钻井液用高效防塌沥青粉,其按重量百分比组成为62%至75%的沥青,0至6%的软化 点调节剂,20%至35%的降滤失剂,0至5%的沥青结合剂;
The high efficiency anti-collapse asphalt powder consists of asphalt 62-75 wt%, softening point regulator 0-6 wt%, fluid loss reducing agent 20-35 wt%, and asphalt binding agent 0-5 wt%.
根据沥青的延度、针入度和软化点的变化,研究催化剂的种类和催化剂的加入量对沥青氧化的影响。
With the change of ductility, penetration and softening point, it investigates the influence of the kinds of catalyst and the content of catalyst.
以软化点为参数建立了沥青一级老化动力学模型,为研究沥青抗老化性能提供了一种简便可行的分析方法。
The first order aging kinetic model has been put forward successfully based on softening point, which offered an available and convenient method for studying the asphalt aging behavior.
评价沥青高温稳定性的指标有软化点、当量软化点;
The indexes of high temperature stability are softening point and equivalent softening point.
SBS改性沥青在热储存过程中会出现软化点大幅波动现象。
There is a large softening point (SP) fluctuation for modified asphalt during its heating storage.
将苯乙烯-丁二烯-苯乙烯(SBS)聚合物改性沥青用常规试验方法(针入度、软化点、动粘度及脆点)与动态力学分析方法所得到的试验结果进行比较研究。
It is demonstrated that SBS modification improves the viscoelastic properties of bitumen, which can be tested using DMA but not conventional methods.
因此,提高BI含量和降低氮含量可以既不改变软化点而又增加石墨电极用粘结剂沥青的结焦率。
Therefore increasing the BI content and decreasing the nitrogen content increases coke yield without any change in the softening point of binder pitches for graphite electrodes.
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softening point物质软化的温度称软化点,主要指无定形聚合物开始变软的温度。软化点测定的方法很多,测定...软化点不仅与高聚物的结构有关,而且与其分子量的大小有关。
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