硅烷偶联剂KH550对炭黑填充天然橡胶性能的影响

研究不同用量的硅烷偶联剂KH550对炭黑填充天然橡胶的硫化特性、物理性能和动态力学性能的影响。结果表明,硅烷偶联剂KH550的加入缩短了焦烧时间和正硫化时间;硅烷偶联剂KH550添加量为2份时邵尔A型硬度和拉伸强度达到最大值,拉断伸长率有所降低,回弹性和压缩永久变形性能有明显改善;硅烷偶联剂KH550的加入能有效降低炭黑的Payne效应,提高胶料的交联密度及炭黑的分散性,硫化胶损耗因子和动态生热降低,动态力学性能明显改善。     

偶联剂与混炼工艺对炭黑填充NBR胶料性能的影响

研究偶联剂Si69和KH-550与混炼工艺对炭黑填充NBR胶料硫化特性、表观交联密度、物理性能和动态性能的影响。结果表明,偶联剂的加入能够延长胶料的t90,经高温混炼后的NBR胶料的焦烧时间缩短,t90延长;偶联剂能够增大NBR胶料的表观交联密度和炭黑-橡胶间的相互作用,经高温混炼后作用更加明显,硫化胶的物理性能提高;加入偶联剂KH-550并经高温辊改性后的NBR硫化胶具有更好的耐热老化性能。偶联剂Si69或KH-550能够改善NBR硫化胶的动态性能,加入偶联剂KH-550并经高温改性后性能较佳。     

偶联剂γ-氨丙基三乙氧基硅烷对炭黑增强丁腈橡胶性能的影响

考察了偶联剂γ-氨丙基三乙氧基硅烷(KH550)的用量对炭黑增强丁腈橡胶(NBR)硫化胶的交联密度、物理机械性能及动态性能的影响。结果表明,KH550的加入明显提高了NBR硫化胶的交联密度,且使NBR硫化胶的耐老化性能得到改善;当KH550用量为2份时,NBR硫化胶具有较佳的物理机械性能,NBR硫化胶的Payne效应最小,在高、低应变下均具有较低的滞后损失和动态温升,同时改善了老化前后NBR硫化胶的耐屈挠性。     

硅烷偶联剂KH550在全钢载重子午线轮胎胎面胶中的应用

研究硅烷偶联剂KH550在全钢载重子午线轮胎胎面胶中的应用。结果表明：在胎面胶中加入硅烷偶联剂KH550,胶料的门尼粘度增大,门尼焦烧时间缩短,硫化速度加快;与未加硅烷偶联剂KH550的硫化胶相比,加入0.75份硅烷偶联剂KH550的硫化胶的定伸应力和撕裂强度略有提高,其他性能相当,同时胶料的损耗因子减小12%,有利于减小轮胎滚动阻力。     

淀粉改性及其在胶料中的应用

将淀粉进行表面醚化和酯化疏水改性,研究改性淀粉在胶料中的应用。结果表明:改性淀粉替代部分炭黑对胶料物理性能有一定影响,采用酯醚淀粉替代部分炭黑的胶料物理性能明显优于采用轻质碳酸钙替代部分炭黑的胶料,与白炭黑替代部分炭黑的胶料物理性能接近;改性淀粉与偶联剂KH550和KH570配合的胶料物理性能较好;轮胎胎面胶中用8~10份改性淀粉替代部分炭黑可以明显提高胶料的耐屈挠性能并降低生热。     

不同改性剂对白炭黑填充EPDM粘合性能及力学性能的影响

研究了不同改性剂改性白炭黑对EPDM胶料粘合性能、硫化特性、力学性能的影响。结果表明,改性白炭黑对混炼胶的粘合性能均有提高,其中KH550改性白炭黑增粘效果更好,最佳用量为25份;随着白炭黑及改性白炭黑用量的增加,胶料工艺正硫化时间延长;硫化胶定伸应力提高,拉断伸长率降低。     

白炭黑改性剂对溶聚丁苯橡胶性能的影响

将偶联剂Si69和KH550、活性剂PEG4000和DPG用作白炭黑改性剂,研究其对白炭黑填充溶聚丁苯橡胶(SSBR)性能的影响。结果表明:改性剂种类和用量对硫化胶性能有较大影响,Si69,KH550,PEG4000和DPG的最佳用量分别为4,8,4和6份;在最佳改性剂用量下,与未改性白炭黑胶料相比,改性白炭黑胶料的加工安全性好,硫化速率快,物理性能、耐磨性能和抗湿滑性能提高;在4种改性剂中,Si69和KH550改性白炭黑在橡胶中的分散性较好,胶料具有较高的物理性能、耐磨性能、抗湿滑性能及较低的滚动阻力。     

国外与国内炭黑对胎面胶料硫化时间的影响

炭黑是橡胶工业主要的补强剂和填充剂,仅次于生胶居橡胶原材料的第二位。炭黑加入橡胶后,可以改善胶料的性能。文章对国外和国产炭黑对胎面胶料硫化时闰的影响进行了对比试验。结果表明,卡博特炭黑能明显提高胶料强力性能,胶料的焦烧时间和正硫化时间相对较短。     

炭黑分散剂对NR胶料性能的影响

试验研究炭黑分散剂及品种对NR胶料性能的影响。结果表明，在NR胶料中加入炭黑分散剂，可以延长胶料的焦烧时间，提高硫化胶的定伸应力和拉伸强度，降低压缩疲劳温升，其中炭黑分散剂J-1能减小硫化胶的压缩永久变形，对其它性能的改善效果最显著，其最佳用量为3份。     

跑气保用轮胎胎侧支撑胶配方的优化

对现用跑气保用轮胎胎侧支撑胶配方进行优化。结果表明:在天然橡胶/顺丁橡胶(BR)生胶体系中加入热塑性弹性体,并减小BR和炭黑N550用量,胶料的门尼焦烧时间和正硫化时间延长,抗硫化返原性能提高,工艺性能良好;硫化胶的物理性能和耐老化性能提高,生热降低;成品轮胎的耐久性能提高。     

槽法炭黑填充天然橡胶的制备及性能

考察了偶联剂γ-氨丙基三乙氧基硅烷(KH 550)、多功能交联剂1,6-双(N,N'-二苯并噻唑氨基甲酰二硫)-己烷(WY 988)、混炼温度和时间对槽法炭黑填充天然橡胶门尼黏度、硫化特性、物理机械性能、压缩永久变形、蠕变及稳定性的影响.结果表明,加入KH 550,硫化胶的邵尔A硬度和300％定伸应力提高,压缩永久变形...     

Influence of bound polymer on cure characteristics of natural rubber compounds reinforced with different types of carbon blacks

Rubber compounds are reinforced with fillers such as carbon black and silica. The cure characteristics of a filled rubber compound vary with the filler type and content. The influence of the type of carbon black on the cure characteristics of carbon black filled natural rubber compounds is investigated using two types of carbon black (N220 and N550), which are different in primary size and structure. The cure time and cure rate become faster as the carbon black content increases. The crosslink density also increases and reversion resistance is improved with the increase of carbon black content. The cure time and cure rate of the compound filled with N550 are faster than those of the compound filled with N220 at the same level of bound rubber content. In addition, higher crosslink density is also observed in the compound filled with N550 compared to that of the compound filled with N220 at the same level of bound rubber content. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2282–2289, 2005     

Effect of KH550 on the Preparation and Compatibility of Carbon Fibers Reinforced Silicone Rubber Composites

Silicone rubber has good heat resistance, but its mechanical properties are poor. To improve the mechanical properties of the silicone rubber, the carbon fiber / silicone rubber composites were prepared in this paper, in which the silicone rubber was used as the matrix, the high-performance carbon fiber (CF) treated with coupling agent is used as the reinforcement. The best composite formulation, the types and content of coupling agent are determined by testing mechanical properties of the composites. The morphology structures of the composites were observed by scanning electron microscope (SEM), the compatibility between carbon fiber and silicone rubber was studied by infrared spectrum analysis (IR), dynamic thermal mechanical analysis (DMA) and X-ray photoelectron spectroscopy (XPS). The results show that the best composite formulation is silicone rubber of 100 phr, carbon fiber of 12 phr, coupling agent KH550 of 2.5 phr. The best first curing conditions are at 175 ^°C under 10 MPa for 30 min, the postcuring conditions are at 200 ^°C for 2h. The compatibility between carbon fiber treated with KH550 and silicon rubber is the best by SEM, IR, DMA and XPS analysis, and confirm that the coupling agent KH550 plays a compatilizer role in the preparation process of the carbon fiber/silicone rubber composites.     

化学改性脱硫灰取代部分炭黑制备环保型丁苯橡胶及其性能

用硅烷偶联剂Si69和KH550对脱硫灰进行化学改性,用改性脱硫灰取代部分炭黑与丁苯橡胶复合,制备环保型丁苯橡胶,对其进行了表征,采用均匀设计结合BP神经网络建立模型优化工艺参数. 结果表明,最优制备工艺参数为Si69和KH550用量分别为4.3wt%和3.8wt%、无水乙醇用量22.1wt%、搅拌速度705 r/min、反应温度82℃,该条件下所制环保型丁苯橡胶的力学性能为拉伸强度19.64 MPa、撕裂强度44.96 kN/m、邵氏A硬度66. 实验结果与模型预测值吻合较好,相对误差为3.03%~2.65%.     

Silica and diatomite fillers modified fluorine rubber composites treated by silane‐coupling agents

The fluorine rubber nanocomposites were prepared by using the silane‐coupling agents treated silica and diatomite, in which 3‐amino propyltriethoxysilane (KH550), 3‐mercapto‐propyl trimethoxysilane (KH590), and bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide (Si69) of the coupling agent were used as the filler modifiers to increase the compatibility between filler and fluorine rubber. The structure and morphology of the composites were investigated by Fourier transform infrared spectroscopy and scanning electron microscopy. The T_g and thermal stability of the composites were investigated by dynamic mechanical analysis and thermogravimetric analysis. The results showed that the best coupling agent was KH550 and 2 phr (parts per hundred rubber). The KH550‐modified compound filler was crosslinked with fluorine rubber, and the compatibility between filler and fluorine rubber was improved and further confirmed to improve the thermal properties of fluorine rubber with the KH550‐modified filler. J. VINYL ADDIT. TECHNOL., 26:55–61, 2020. © 2019 Society of Plastics Engineers     

裂解炭黑在叉车轮胎胎面胶中的应用

研究裂解炭黑(CBp)在叉车轮胎胎面胶中的应用。结果表明:在胎面胶中以CBp等量替代炭黑N550,胶料的门尼粘度减小,使用20份CBp的胶料门尼焦烧时间相当,硫化胶的定伸应力和拉伸强度减小,拉断伸长率和撕裂强度增大,炭黑分散性下降;改性CBp硫化胶的耐磨性能优于CBp硫化胶。使用CBp等量替代炭黑N550可显著降低生产成本。     

Silicone Rubber Composites Modified by Chopped Basalt Fibers Treated with Coupling Agent

To improve the mechanical properties of the silicone rubber, the chopped basalt fiber / silicone rubber composites were prepared in this work, in which the silicone rubber was used as the matrix, the basalt fibers treated with coupling agent were used as the reinforcement. The types and content of coupling agent were determined by testing mechanical properties and thermal properties of the composites, The morphology structures of the composites were observed by scanning electron microscope (SEM) , the compatibility among various components in composites were studied by infrared spectrum analysis (IR), dynamic thermal mechanical analysis (DMA) and X-ray photoelectron spectroscopy (XPS). The results showed that the best coupling agent was KH550 and the content was 2.5 phr ( parts per hundred rubbers ). The basalt fibers treated with KH550 combined with silicone rubber and formed new chemical bond, indicating the coupling agent KH550 improved the compatibility among various components in composites.     

改性白炭黑对天然橡胶和环氧化天然橡胶共混物力学性能的影响

研究了白炭黑对天然橡胶和环氧化天然橡胶（NR／ENR）共混物的补强性能以及改性剂的品种和用量对白炭黑分散效果的影响。结果表明，间苯二酚六次甲基四胺（PY）、硅烷偶联剂KH-550、Si-69这3种改性剂对白炭黑都起到了很好的改性作用。PY以40／60的质量比把间苯二酚和六次甲基四胺溶解、混合所得的络合物的改性效果最好，其中硅烷偶联剂Si-69和KH-550的最佳用量以白炭黑质量用量的9％为宜。