桂林理工大学专业英语 英译汉 (2)

动态固化和相容作用对聚丙烯/环氧（PP/epoxy）共混物的形态结构和性能的影响
Effects of dynamical cure and compatibilizationon themorphology and properties of the PP/epoxy blends
本文研究了动态固化和相容作用对聚丙烯/环氧共混物形态结构和性能的影响。

加入马来酸酐接枝聚丙烯(MAH-g-PP) 以及环氧通过双氰氨（dicyanamide）的动态固化，使得（give rise to）聚丙烯/环氧共混物中环氧粒子平均粒径（average diameter）减小。

In this paper, effects of dynamical cure and compatibilization on the morphology and properties of the PP/epoxy blends were studied. The addition of maleic anhydride-grafted polypropylene (MAH-g-PP) and dynamical cure of epoxy by dicyanamide give rise to decrease the average diameter of epoxy particles in the PP/epoxy blends.
在聚丙烯/环氧共混物中，环氧粒子作为（act as）一种有效的成核剂（nucleating agents），加速（accelerating）聚丙烯组分的结晶。

动态固化和相容作用增大了聚丙稀/环氧共混物中聚丙烯结晶的动力学常数（kinetic constant ）K(T) 。

The epoxy particles in the PP/epoxy blends act as effective nucleating agents, accelerating the crystallization of PP component. The dynamical cure and compatibilization increase the kinetic constant K(T) of PP crystallization in the PP/epoxy blends.
环氧树脂的动态固化改进了（leads to an improvement）聚丙烯/ 环氧共混物的模量和强度，同时马来酸酐接枝聚丙烯的加入增加了（results in an increase）共混物的冲击强度。

动态力学结果表明（indicate），马来酸酐接枝聚丙烯的加入改进了聚丙烯与环氧之间的相容性（compatibility），同时通过动态固化，聚丙烯/ 环氧共混物的储存模量增加。

Dynamical cure of the epoxy resin leads to an improvement in the modulus and strength of the PP/epoxy blends, and the addition of MAH-g-PP results in an increase in the impact strength. Dynamic mechanical thermal analysis (DMTA) results indicate that the addition of MAH-g-PP improves the compatibility between PP and epoxy resin, and the storage modulus of the PP/epoxy blends is increased by dynamical cure. 热重分析（Thermogravimetric analysis ）(TGA)结果表明，环氧的动态固化以及马来酸酐接枝聚丙烯的加入改进了聚丙烯/ 环氧共混物的热稳定性。

广角X 射线衍射分析（Wide-angle X-ray diffraction ）(WAXD)表明聚丙烯/ 环氧共混物与纯聚丙烯具有同样的结晶结构，表明了(indicating)动态固化和相容作用不破坏（disturb）聚丙烯/ 环氧共混物的结晶结构。

Thermogravimetric analysis (TGA) results show that dynamical cure of epoxy and addition of MAH-g-PP improved the thermal stability of the PP/epoxy blends. Wide-angle X-ray diffraction (WAXD) analysis shows that the PP/epoxy blends have the same crystalline structure as pure PP, indicating dynamical cure and compatibilization do not disturb the crystalline structure of the PP/epoxy blends.
表2说明了动态固化和相容作用对PP/epoxy 共混物力学性能的影响。

当加入20 %（重量百分比）的环氧树脂到聚丙烯基体材料中，弯曲模量提高（flexural modulus ），但是冲击强度，拉伸强度和断裂伸长率（elongation at break）减少，这是由于聚丙烯和环氧树脂之间的相容性较差的原因。

Table 2 shows the effects of dynamical cure andcompatibilization the mechanical properties of the
PP/epoxy blends. The addition of 20 wt% epoxyresin to the PP matrix improves the flexural modulus but reduces the impact strength, tensile strength,and elongation at break because of the poor compatibility between PP and the epoxy resin.
通过加入 5 %的MAH-g-PP （用作增容剂），PP/MAH-g-PP/epoxy (75/5/20)比PP/epoxy (80/20)具有了更高的模量和拉伸强度（tensile strength）。

与PP/epoxy (80/20)相比，动态固化的PP/epoxy (80/20)具有更高的弯曲强度和拉伸强度，分别增加（which increase by）了14％和50％，但是共混物的冲击强度低于PP/MAH-g-PP/epoxy (75/5/20)。

Through the addition of 5 wt% MAH-g-PP (used as a compatibilizer), the PP/MAH-g-PP/epoxy (75/5/20) has a higher modulus and tensile strength than the PP/epoxy (80/20). The dynamically cured PP/epoxy (80/20) has the higher flexural modulus (1960 MPa) and tensile strength (38.8 MPa), which increase by 14% and 50%, respectively, in comparison with those of PP/epoxy (80/20), but the impact strength of the blend is lower than that of the PP/MAH-g-PP/epoxy (75/5/20).
在所有的PP/epoxy共混物中，动态固化的PP/MAH-g-PP/epoxy (75/5/20) 具有最好力学性能。

结果表明，环氧树脂的动态固化使得（led to an improvement ）PP/epoxy 共混物的模量和强度都得到提高，同时MAH-g-PP 的加入导致了（results in）冲击强度的增加。

The dynamically cured PP/MAH-g-PP/epoxy (75/5/20) has best mechanical properties in all the PP/epoxy blends. The result shows that dynamical cure of the epoxy resin led to an improvement in the modulus and strength of the PP/epoxy blends, and the addition of MAH-g-PP results in the increases in the impact strength.。