在PHB的均聚物是一种高结晶度,其不同于那些不聚苯乙烯力学性能,比较脆硬聚合物,虽然它是那么脆弱。
The PHB homopolymer is a stiff and rather brittle polymer of high crystallinity, whose mechanical properties are not unlike those of polystyrene, though it is less brittle.
长输管线系列球阀不仅选材广泛且内件材料均采用表面镀镍或是316材质、密封圈采用特制的聚合物材料。
Pipeline series ball valve is not only wide selection of parts and materials are used in nickel-plated or 316, seal with a special polymer material.
该工程地下室、厨房与卫生间均采用聚合物水泥防水涂料;屋面采用倒置式防水技术。
Polymer cement waterproofing coating is used in the basement, kitchen and toilet of the project and inversion waterproofing technique in its roofing system.
食品聚合物科学认为:在玻璃态下,造成食品品质变化的一切受扩散控制的反应,其速率均十分缓慢,甚至不会发生。
The food polymer science demonstrates that under the glass state, the change of food quality is controlled by the reaction of diffusion, which is quite slow in speed or even could not happen.
从理论上验证了多螺杆反应器在物料输运能力以及物料混合能力等方面均具有较佳的能力,多螺杆反应器更适合聚合物的加工。
It is verified in theory that the multiple-screw extruders have good material transportation and mixed ability. Multiple-screw extruder is fitter for polymer processing.
丙烯酸及其酯类是一类重要的化工原料,作为聚合单体可以经均聚和共聚合成成千上万的聚合物。
Acrylic acid and its ester derivatives are important raw materials for the chemistry industry, as monomer, via homopolymerization and copolymerization, it can synthetic thousands of polymers.
可以想象,最简单的聚合物是由一种结构物单元重复多次形成一个 线型 均聚物。
The simplest polymer which can be envisaged consists of the repetition of a single structural unit many times over to form a liner homopolymer.
利用自洽场方法研究两嵌段共聚物受限于接枝均聚物链(聚合物刷)圆孔中的自组装相形貌。
Using self-consistent field calculation, the new equilibrium morphology of a diblock copolymer melt confined in a brush-covered cylindrical nanopore can be found.
结果表明,单体和聚合物均呈现向列型液晶织态结构,聚合物在较宽的温度范围内有很好的液晶性。
The results show that the texture of monomer and polymer are the type of nematic liquid crystalline, and the polymer has good liquid crystal performance .
聚合物(均经FDA批准的,并广泛应用于商业)保护,TNP- 470,从胃的酸性环境,使其能够吸收完整时,采取口头方式。
The polymers (both FDA-approved and widely used commercially) protect TNP-470 from the stomach's acidic environment, allowing it to be absorbed intact when taken orally.
研究结果表明,聚合物涂膜的拉伸强度随UPA和EGDMA用量的增加均呈现先增大后减小的趋势;
The experimental results show that the tensile strength of emulsion films firstly increases and then decreases with the increase of the UPA and EGDMA dosages.
研究表明,聚合物分子量降低,水解度升高或者两者同时变化,沉降体积均减小,但是仍有很高的保留率。
The study results show that the subsidence volume has been a decrease along with the molecular weight dropping, the degree of hydrolysis rising or both varying, but it still has high reservation rate.
对于地层非均质性的影响,通过注入聚合物段塞调驱,能起到防止气窜,增加注入气驱扫效率。
Prepositive polymer slug displacement can decrease the effect by the formation heterogeneity, prevent the gas breakthrough and improve the displacement sweep efficiency of the injective gas.
对于非均质岩心,聚合物对驱油效率的贡献大于表面活性剂的贡献,此外还对三元段塞注入的大小和浓度进行了优化。
To heterogeneous core, the contribution of polymer to the displacement efficiency is higher than that of surfactant. The size of the ASP slug and the concentration of chemicals were also optimized.
本发明涉及单- 1 -烯烃的均聚物和共聚物,制造此类聚合物的方法以及此类聚合物的应用。
The present invention is directed to homo-polymers and copolymers of mono-1-olefins, a method of making such polymers, and USES of such polymers.
通过大量非均质和均质岩心物理模拟实验,给出了三元复合驱和聚合物驱替原油时的合理流度比。
This paper performs a large number of heterogeneous and homogeneous core physical simulation experiments and gives the reasonable mobility ratio of polymer flooding, ASP flooding and oil displacement.
结果表明,合成的淀粉接枝共聚物符合预期结构,未糊化的淀粉接枝后,聚合物保持团粒结构,表面接枝上了乙烯基均聚物;
After the graft reaction of ungelatinized starch, the morphology of the copolymers kept the aggregate structure of starch, and vinyl copolymer is grafted on its surface;
SPPHES均质膜的含水率和溶胀率随着SPPHES的磺化度和温度的升高而增大,磺化聚合物显示了很好的尺寸稳定性和较好的热性能。
The water uptake and swelling ratio of SPPHES increased as the increasing of SD and test temperature. TGA indicated that SPPHES had good thermo-stability.
SPPHES均质膜的含水率和溶胀率随着SPPHES的磺化度和温度的升高而增大,磺化聚合物显示了很好的尺寸稳定性和较好的热性能。
The water uptake and swelling ratio of SPPHES increased as the increasing of SD and test temperature. TGA indicated that SPPHES had good thermo-stability.
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