For the purpose of extending the application fields of hard pitch,as a kind of petroleum industry by-product,the highsoftening-point hard pitch was used as a novel polystyrene modification additive.
利用深度萃取脱油方法制备高软化点硬沥青材料,通过熔融共混的方法对聚丙烯进行添加改性,并通过人工加速紫外光老化试验,对改性后的聚丙烯进行抗老化性能的测试表征,相应的红外谱图以及力学性能的测试结果表明,硬沥青的添加对聚丙烯材料的抗光老化性能有很好的改善作用。
For the purpose of extending the application fields of hard pitch, the high-softening-point hard pitch was used as a kind of polymer modification additive.
利用深度萃取脱油方法制备高软化点硬沥青材料,通过熔融共混的方法对聚丙烯进行添加改性,并通过人工加速紫外光老化试验,对改性后的聚丙烯进行抗老化性能的测试表征,相应的红外谱图以及力学性能的测试结果表明硬沥青的添加对聚丙烯材料的抗光老化性能有很好的改善作用。
For the purpose of extending the application field of hard pitch,the high-softening-point hard pitch was used as a kind of polystyrene modification additive.
利用深度萃取脱油方法制备的高软化点硬沥青材料,通过熔融共混的方法对聚苯乙烯进行添加改性,并通过高压渗透发泡剂的方法进行预发泡处理,对蒸汽发泡后的泡沫聚苯乙烯进行了压缩强度,吸水性,发泡倍率等表征,结果表明硬沥青的添加不会对材料的发泡性能产生影响,但压缩强度会有所降低。
Polypropylene(PP)was modified by melt-mixing method,and using high softening point hard asphalt.
采用熔融共混方法,用高软化点硬沥青对聚丙烯进行改性。
Several blending systems, including PP/EVA, PP/SBS, PP/wollastonites, PP/GF and PP/hard asphalt were prepared w.
采用机械共混的方法制备PP/EVA、PP/SBS、PP/硅灰石、PP/玻璃纤维、PP/硬沥青等五大共混体系。
Synthetic ammonia plant uses hard bitumen as feedstock,with Texaco gasification process,CO sulfur tolerant shift catalyst,Linde low temperature methanol washing and low temperature liquidized nitrogen purification as well as Topse ammonia synthesis process Urea plant takes the Italian Snam ammonia steam stripping proces
合成氨以硬质沥青为原料 ,采用德士古气化、耐硫催化剂CO变换、林德低温甲醇洗和低温注氮洗净化及托普索氨合成工艺 ,尿素采用意大利斯那姆氨汽提流
Hard bitumen has a low penenration and has better high temperature performance than soft bitumen.
硬质沥青针入度低,高温性能相对于高标号沥青更为优越,在德国、日本等大跨径钢桥面浇注式沥青混凝土铺装中应用较为广泛,取得了良好的使用效果。
Experiment study on the modulus of hard asphalt stabilized macadam
硬质沥青稳定碎石模量试验研究
Hard asphalt A-30 is a kind of high viscosity base asphalt which characterized by low penetration,high viscosity,high stiffness,high soft point,and low ductility,it has satisfactory high- temperature stability,better temperature susceptibility,only unsatisfactory low-temperature perfor- mance.
A-30硬质沥青是指粘稠度相对较大的基质沥青,具有针入度小、粘稠度大、劲度大、软化点高、延度小的特点,其高温性能优良,温度敏感性好,低温性能略差。
Combined with the key technical study project of the long service life asphalt pavement of the heavy-load traffic by the Ministry of Communication and in the light of the fatigue performance of hard asphalt concrete,the article introduces the relative experiments and carries out the relative analysis to provide the referring suggestion for the anti-fatigue study of half-rigidity pavement.
该文结合交通部重载交通长寿命沥青路面关键技术研究项目,针对硬质沥青混凝土的疲劳性能,作了相关的试验与分析,为半刚性路面的抗疲劳研究提出了参考性建议。
The Experimental Study on the Performance of Hard Asphalt and Asphalt Mixture;
硬沥青及硬沥青混合料性能试验研究
lignite - tar pitch
褐煤柏油脂, 褐煤硬沥青
A trademark used for a natural black bitumen employed in the manufacture of acid, alkali, and waterproof coatings.
硬沥青适用于制造酸、碱和防水服的一种天然黑沥青的商标
A natural black bitumen used in the manufacture of acid, alkali, and waterproof coatings.
硬沥青用来制造酸、碱和防水涂层的天然的黑色沥青
The Properties of Expanded Polystyrene Modified by Hard Pitch;
硬沥青添加改性制备发泡聚苯乙烯研究
The byproduct of petroleum industry-hard pitch is recommended and the physical and chemical properties are introduced.
介绍了一种在石油加工过程中产生的特殊副产物－硬沥青。
Study of hard-grade asphalt mixes performance
硬质沥青用于沥青混凝土的性能研究
Test Study of the 30～# Hard Grade Asphalt Used for Mid or Lower Surface Layer of Asphalt Pavement;
30～#硬质沥青用于沥青路面中下面层的试验研究
High Temperature Performance of Domestic Hard Asphalt and Asphalt Mix
国产硬质沥青及混合料高温性能研究
The Application Research of Native Hard Bitumen in Gussasphalt;
国产硬质沥青在浇注式沥青混凝土中的应用研究
Pavement Performance Study on the Hard Asphalt and Its Mixture
硬质沥青及其混合料路用性能的试验研究
Performance evaluation and engineering application of Zhonghai A-50 hard asphalt
中海50号硬质沥青性能评价与工程应用
PERFORMANCE EVALUATION OF 30~# AND 50~# HARD PAVING ASPHALTS PRODUCED FROM KARAMAY CRUDE OIL
克拉玛依30号、50号硬质道路沥青的性能评价
Study on the engineering application of asphalt rigid polyurethane foam plastics
沥青聚氨酯硬质泡沫塑料工程应用探讨
native asphaltic pyrobitume
天然地沥青质焦沥青
To smear or cover with or as if with pitch.
用沥青涂，用沥青覆盖
Full of or covered with pitch.
沥青的、涂沥青的充满或铺着沥青的
The paint exhibits toughness and chemical resistance of epoxy as well as seawater resistance of tar.
该漆具有环氧树脂的坚硬性耐化学品性，又具有沥青的耐海水性。