热塑性硫化胶在电力行业的应用

热塑性弹性体(TPE)是一种由橡胶和塑料混合而成的材料，它具有橡胶的力学性能且可用传统的热塑性塑料加工设备，如挤出和注压设备加工。热塑性弹性体中的一种就是非常有发展前途的热塑性硫化胶(TPV)，它由完全硫化的橡胶相分散于热塑性塑料相组成的连续母体中而成。连续相通常为聚丙烯，硫化橡胶相是三元乙丙橡胶。这种热塑性弹性体具有极好的橡胶性能，如具有很小的压缩永久变形而表现出优良的密封性能，有橡胶手感及非常好的柔韧性。相对于其他热塑性弹性体，TPV还具有突出的耐热性耐化学腐蚀性和低温性能。     

弹性体的改性技术：第5章 共混型热塑性弹性体

5.1 共混型热塑性弹性体的发展及特点 共混型热塑性弹性体(TPE)的制备技术,经历了机械共混、动态部分硫化和动态全硫化三个发展阶段。用后者制得的TPE又称作热塑性硫化胶(TPV)。EPDM/PP(聚丙烯)共混型TPV,在相态上是以完全交联的EPDM颗粒分散于PP基质中。这是一种在组成,结构上与前两法迥然不同的体系。在     

热塑性硫化胶的结构性能 应用及其国产化

热塑性硫化胶(TPV)是热塑性弹性体(TPE)的一类,其制备的关键技术是动态硫化技术。该产品可广泛用于汽车工业、建筑业、电子电气业、日用消费品等,需求量将不断增加。     

热塑性硫化胶的结构性能应用及其国产化

热塑性硫化胶(TPV)是热塑性弹性体(TPE)的一类,其制备的关键技术是动态硫化技术。该产品可广泛用于汽车工业、建筑业、电子电气业、日用消费品等,需求量将不断增加。     

NBR/HPVC热塑性弹性体的性能研究(I)

选用丁腈橡胶(NBR)和高聚合度聚氯乙烯(HPVC)为主体材料,用动态硫化制备了一类性能优异的材料丁腈橡胶 高聚合度聚氯乙烯共混型热塑性弹性体(TPE)。研究了聚氯乙烯聚合度、橡塑化、增塑剂、填充剂用量等因素对动态硫化NBR HPVC热塑性弹性体力学性能的影响。     

NBR/HPVC热塑性弹性体的性能研究(Ⅰ)

选用丁腈橡胶(NBR)和高聚合度聚氯乙烯(HPVC)为主体材料,用动态硫化制备了一类性能优异的材料--丁腈橡胶/高聚合度聚氯乙烯共混型热塑性弹性体(TPE).研究了聚氯乙烯聚合度、橡塑化、增塑剂、填充剂用量等因素对动态硫化NBR/HPVC热塑性弹性体力学性能的影响.     

反应挤出制备PP/EPDM热塑性硫化胶纳米复合材料的形貌演变和热机械特性

正热塑性弹性体材料(TPE)是一种具有热塑性塑料加工特性和传统热固性橡胶功能特性的共聚物或聚合物共混体。TPE通常具有两相结构,即给予材料橡胶性能的弹性体相和作为橡胶相物理交联剂的较硬的热塑性塑料相。后者在高温下熔融,使TPE可加工。在众多热塑性弹性体共混物中,Fisher等人首先提出了通过动态硫化制备具有较好橡胶性能的热塑性硫化胶(TPV)。根据定义,动态硫化过程是指弹性体与热塑性聚合物在熔融共混过程中     

医用级TPV可取代成型O形圈和垫片中的橡胶

<正>新型医用级热塑性硫化胶(TPV)弹性体适用于注塑成型的O形圈、垫片和隔膜,具有出色的长期密封性能,加工成本比热固性橡胶更低,并能提供优于标准TPV和苯乙烯TPE的制造优势。Teknor Apex Company推出的Medalist~?MD-23100化合物的弹性与橡胶类似,具有优异的长期压缩形变和耐     

动态硫化法制备PVC为基础的热塑性弹体的研究

本文详细讨论了动态硫化法 PVC 为基础的热塑性弹体(TPE)的配方,制备工艺及其对 TPE 性能的影响,通过加入第三高聚物组份,利用动态硫化法形成了“协同网络结构的 TPE。性能测试表明:该 TPE 的物理机械性能优于 NBR 硫化胶及 NBR/PVC 硫化胶,其高温蠕变性大大提高,并具有优良的重复加工性能,且成本低廉。     

NBR/HPVC热塑性弹性体的性能研究Ⅱ

选用丁腈橡胶(NBR)和高聚合度聚氯乙烯(HPVC)为主体材料,用动态硫化法制备了一类性能优异的材料—丁腈橡胶/高聚合度聚氯乙烯共混型热塑性弹性体(TPE),研究了共混方法,硫化温度,硫化体系,硫化剂用量,硫化时间等因素对动态硫化NBR/HPVC热塑性弹性体力学性能的影响。     

聚酰胺类TPV的研究进展

以聚酰胺为基体采用动态硫化工艺制备的热塑性动态硫化弹性体（TPV）是一类颇具发展潜力的热塑性弹性体（TPE）。目前很多高性能橡胶材料都可以采用聚酰胺类的TPV代替,特别是我国汽车工业的高速发展,为这种TPV的发展提供了巨大的空间。本文重点介绍了这类TPV的研究进展。     

聚丙烯／聚丙烯酸丁酯热塑性弹性体的研制

介绍了新型热塑性弹性体聚丙烯／聚丙烯酸丁酯的生产方法，研究了相容剂，增塑剂和硫化剂对热塑性弹性体性能的影响，制备的聚丙烯／聚丙烯酸丁酯热塑性弹性体具有优异的耐油性能，可在工具手柄，汽车万向节护套及耐油密封材料方面得到应用。     

Dynamically Vulcanized EPDM/PP (40/60) Blends

Dynamically vulcanized thermoplastic elastomer (TPE) blends were first described by Fisher. In the 1960s, the usage of TPE was low. However, the consumption of TPE is increasing today. Due to hard and soft polymer phases in its structure, TPE replaced a lot of materials. TPE materials are preferred today due to their good thermal properties, oxidation resistance, transparency, adhesion, compatibility with other polymers etc. As a result of the studies that were done in 1975, TPV—vulcanized thermoplastic elastomers were developed. In this study, TPV elastomers were produced by forming crosslinks with peroxide from different ratios, of EPDM and PP. Mixing was done with twin screw extruder. After that yield and tensile strength, the modulus of elasticity, % elongation, Izod impact strength, hardness, Melt Flow Index (MFI), Vicat Softening Point, Heat Deflection Temperature (HDT), and density of crosslinks were determined. Thermal transition temperatures and microstructure were determined with DSC and SEM, respectively.     

热塑性弹性体的现状和发展

热塑性弹性体是一类应用用范围很广并兼有橡胶和热塑性塑料特性的高分子材料。目前,除了轮胎之外,很多橡胶应用领域都可以使用热塑性弹性体替代,特别是中国汽车工业的高速发展,为各种热塑性弹性体的发展提供了广阔的空间。不过,目前市场对这类物料的了解还不十分清楚,除了详细论述了TPE的分类、特性及应用等外,还介绍了最新技术进展及一些供应商的最新产品。     

热塑性弹性体(TPE)简述(上)

叙述了热塑性弹性体(TPE)的结构特点、品种和性能,并对其中的主要品种TPS、TPO、TPV、TPU、TPEE、TPVC、TCPE以及TPA等进行了分别介绍。简述了TPE的不足与今后的发展方向。指出,TPE作为一种节能环保的橡胶新型原料,发展前景十分看好。     

热塑性弹性体(TPE)简述(下)

叙述了热塑性弹性体(TPE)的结构特点、品种和性能,并对其中的主要品种TPS、TPO、TPV、TPU、TPEE、TPVC、TCPE以及TPA等进行了分别介绍。简述了TPE的不足与今后的发展方向。指出,TPE作为一种节能环保的橡胶新型原料,发展前景十分看好。     

Effects of blend composition and dynamic vulcanization on the morphology and dynamic viscoelastic properties of PP/EPDM blends

The morphology and dynamic viscoelastic properties of isotactic polypropylene (PP) blended with oil-free/oil-extended ethylene–propylene–diene (EPDM) rubbers were studied. Unvulcanized and dynamically vulcanized blends with the compositions PP/EPDM = 50/50 and = 30/70 were investigated. The morphology was observed by phase contrasted atomic force microscopy. The dynamic viscoelastic properties were determined with a rheometer of plate–plate configuration. It was shown that the rheological behavior was strongly affected by both the composition and the morphology of the blends. Significant improvement in the flowability of the dynamically vulcanized blends was observed when oil-extended EPDM was used instead of the oil-free version. It was demonstrated that the rheological properties are mostly controlled by the elastomer phase at low frequencies, while in the high-frequency range the influence of PP becomes dominant. The peculiarities in the rheological behavior of the thermoplastic elastomers (uncured blends, TPE) and thermoplastic dynamic vulcanizates (TPV, dynamically cured blends) containing oil-extended EPDMs were traced to a limited compatibility between the PP and EPDM components in the melt. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

CR/HPVC热塑性弹性体的性能研究

选用氯丁橡胶（CR）和高聚合度聚氯乙烯（HPVC）为主体材料，用动态硫化法制备了一类性能优异的材料－CR／HPVC共混型热塑性弹性体（TPE）。研究了共混方法、硫化温度、硫化体系、硫化剂用量及硫化时间等因素对动态硫化CR／HPVC热塑性弹性体力学性能的影响。     

Effect of structure development on the rheological properties of PVDF/HNBR-based thermoplastic elastomer and its vulcanizates

The present work demonstrates the structure-rheology relationship of novel polyvinylidene fluoride/hydrogenated nitrile rubber blends with special reference to the effect of mixing time, which has not been amply discussed in the literature. In between 50 and 70 wt% rubber content, a yield in complex viscosity and secondary plateau in storage modulus were discerned due to interconnected droplets-matrix morphology manifesting the thermoplastic elastomeric nature of the blends (TPEs). Such network-like structure altered the rheological properties like relaxation time, capillary viscosity, die swell, elastic responses of the TPE with respect to the trend as expected according to the rule of mixing. Interestingly, in the early stages of mixing, when the dispersed size was bigger, the effect of physical network on the rheological properties was suppressed. During dynamic vulcanization (TPV), both lower and higher frequency responses in oscillatory shear flow, steady shear rheological properties, recoverable strain etc. have changed notably with mixing time. For example, although the complex viscosity of the TPV was higher at a lower frequency as compared to its TPE, it was significantly lower at a higher frequency at the beginning of dynamic curing; however, viscosity increased appreciably with time. Temperature-dependendent rheological properties were also influenced with mixing time of the compositions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48758.     

Preparation and thermo-electric properties of graphene/thermoplastic vulcanizate composites

石墨烯/热塑性硫化胶复合材料的制备及热电性能 汤 琦,崔勇胤,颜桐桐,曹 兰,宗成中（青岛科技大学 高分子科学与工程学院,山东 青岛 266042） 通过熔融共混方式制备了石墨烯（Ge）/聚丙烯母粒,然后采用动态硫化的方法与丁基橡胶共混制备Ge/热塑性硫化胶（TPV）复合材料,研究了Ge/TPV复合材料的相态结构、热电性能和力学性能。结果表明,丁基橡胶交联颗粒以微米级长条状分散在聚丙烯母粒基质中,Ge表面褶皱明显,片层厚度较薄,均匀分散在聚丙烯母粒相和橡塑两相界面中。丁基橡胶交联颗粒能够排斥Ge,从而提高Ge/TPV复合材料的热电性能。与纯TPV相比,Ge/TPV复合材料（Ge质量分数2%）的交流电导率增加了1个数量级,介电常数增加了1.6倍,热导率增加了44.2%。Ge/TPV复合材料的热电性能及力学性能因Ge的存在而大幅提高。