橡胶的英汉翻译

1、Rece ntly, ble nding of polymers has become an in creas in gly importa nt area of research activity. Elastomeric blends are used for many reasons such as lowering the compound cost, for ease of fabrication and to improve the performanee of the in dustrial rubber. Natural rubber (NR) and styre nutadi

2、e ne rubber (SBR) have bee n ble nded for a long time for these reas ons. In this study, 12 differe nt rubber compo unds were prepared by using SMR-20 type of natural rubber and SBR-1502 type of styrene-butadiene rubber in different proportions, keeping fixed the total rubber quantity specified in t

3、he standard testing recipe. The mechanical and physical properties -such as ten sile stre ngth, hard ness, wear, carb on black, ozone resista nee, den sity and rheological properties of the prese nt in dustrial rubber -were studied. Physical and mecha ni cal test results were reported. The ten sile,

4、 hard nessa nd wear properties of the NR/SBR ble nds with the in creme nt of NR perce ntages were greatly enhanced. The study also indicated that filler materials affect on the physical and mecha ni cal properties of the ble nds.Blending of two or more types of polymer is a useful technique for the

5、preparati on and develop ing materials with properties superior to those of in dividual con stitue nts. It is importa nt especially from an in dustrial point of view to con trol the state of mixing of polymer blends. An adequate polymer-blend process requires in formati on and un dersta nding of the

6、 ble nd behavior un der product ion con diti ons. The kno wledge of the relati on ship among melt viscosity, elasticity, and pressure and process temperature is importa nt for the desig n appropriate process equipme nt and for assessme nt of the optimum process con diti ons to produce materials that

7、 have required properties. Natural rubber has bee n studied and reported on exte nsively because of its superior performance in tire applications. It is well installed that elastomers do not display all of the characteristics that are required. Elastomeric blends are used for many purposes such as l

8、oweri ng the compo und cost. The complex shaped product may be more easily fabricated duri ng product ion. Natural rubber (NR) and styre ne-butadie ne rubber (SBR) have bee n ble nded for along time for these reas ons. A lot of studies have dem on strated that the mecha ni cal properties of such ble

9、 nds can be significantly improved by adding a suitable compatibiliser. NR blending has been widely studied and reported as good compatible blends that provide desirable mechanical properties. Another paper about the development of novel elastomeric blends containing NR and ultra-low-density polyeth

10、ylene (ULDPE) reported by Tan ratta nakul and Udomkichdecha. Conven ti onal vulca ni zati on was performed and the physical and mecha ni cal properties of the ble nd were determ in ed. The results were compared with those obtained from NR blending with SBR. Blending SBR with NR can improve the tensi

11、le strength because NR crystallizes on stretching. Kim investigated the mechanical properties of NR blended with SBR. Those study in dicated that the mecha ni cal properties of this ble nd were required rein forceme nt. Thus, filled polymer systems are very popular for the industry for both cost and

12、 performa nce objectives. It is also well established that carb on black (CB) is one of the most importa nt classical rei nforci ng fillers, especially for the rubber tech no logy for cheaper Vulca n sates. New materials are also con sidered as fillers, whether for more econo mical reas ons or rathe

13、r to impart some desirable characteristics of CB as one of the major in puts in tire in dustry, has some extraord inary features. Surface area of CB is one of the most critical parameters con sidered for degree of rei nforceme nt, which supply n ecessary sites to polymer cha ins for wett ing. As som

14、e of the polymer cha ins may also en ter into the holes of the particles depe nding on the rheological (viscosity) properties of the polymers, the so-called physical en trapme nt and physical crossli nk may also play an importa nt role duri ng rei nforceme nt of elastomeric matrices. One of the most

15、 important parameters for the performance of a composite material is the degree of adhesi on at the matrix filler in terface.最近，聚合物混合已成为研究活动中一个日益重要的领域。弹性体共混物的应用有很多原因，如降低复合成本，易于制造，并可提高工业橡胶的性能。由于 这些原因，天然橡胶和丁苯橡胶的混合已有一段时间。在这次研究中，通过使用不同比例的SMR-2C型天然橡胶和SBR-1502型丁苯橡胶，制得了 12种不同的橡 胶化合物，并在指定的标准测试配方中保持固定的橡胶数量。同

16、时还对力学性能 和物理性能如拉伸强度、硬度、耐磨性、炭黑、耐臭氧性、密度和目前工业橡胶 的流变性能进行了研究。还对物理和力学性能实验结果进行了报道。随着天然橡 胶比例的增加，天然橡胶/ 丁苯橡胶拉伸强度、硬度和耐磨性大大提高了。研究 还表明，填充材料影响着共混物的物理和力学性能。对于编制和开发材料，两种或两种以上类型的聚合物混合是一种有用的技 术。其性能优于单个成分的编制和开发材料。这是重要的，尤其是从产业的 角度来控制聚合物共混物的混合状态。充足的聚合物共混过程需要有关生产条 件下混合性能的信息和解释。对于适当工艺设备的设计和生产所需属性的材料的 最佳工艺条件的评估，有关熔体粘度、弹性、压力

17、和生产温度之间关系的知识是 很重要的。因为天然橡胶在轮胎应用中的优越性能，其已被研究和报道。经安装好后，弹性体并不显示必需的所有特性。弹性体共混物有多种用途，例如可 降低复合成本。形状复杂的产品可能更容易在生产过程中制造。由于这些原 因，天然橡胶和丁苯橡胶已被混合有很长一段时间了。诸多研究表明，这种 混合物的力学和物理性能能够通过混合添加合适的相容剂而显著达到。由于 良好的兼容性，天然橡胶共混物表现出理想的力学和物理性能，且得到了广 泛的研究和报道。另一个有关新型弹性天然橡胶和超低密度聚乙烯（ULDPE混合物发展的文章是由 Tanrattanakul和Udomkichdecha报道的。同时他们还 对传统的硫化和共混物的力学性能进行了测定。所得结果同天然橡胶与丁苯 橡胶共混物得到的结果进行了比较。天然橡胶与丁苯橡胶共混物可以提高拉 伸强度，是因为天然橡胶的结晶性伸展。Kim研究了天然橡胶与丁苯橡胶共混物 的力学性能。这些研究表明，这种混合物的力学性能需要进行加