阻尼氯化丁基橡胶配方优化设计

用正交实验设计法对氯化丁基橡胶（CIIR）的阻尼性能进行了研究。通过改变受阻酚、炭黑及硫磺的用量,对氯化丁基橡胶的综合性能及阻尼性能加以研完。     

异丁烯基弹性体的硫化（一）

异丁烯-异戊二烯共聚橡胶（丁基橡胶,IIR）、溴化异丁烯-异戊二烯共聚橡胶（溴化丁基橡胶,BIIR）、氯化异丁烯-异戊二烯共聚橡胶（氯化丁基橡胶,CIIR）和溴化异丁烯-对甲基苯乙烯共聚弹性体（BIMSM）的硫化与通用橡胶（GPR）的硫化是不同的。在丁基橡胶骨架上有大约2%的不饱和链,而卤化丁基橡胶（BIIR和CIIR）是在丁基橡胶骨架上与溴原子或氯原子反应后的丁基橡胶,它能够极大地增加丁基橡胶骨架上异戊二烯的化学活性。类似地,在BIMSM弹性体中溴原子被连接到对甲基苯乙烯（PMS）基团上,这样可以给完全饱和的聚合物骨架提供一个化学活性的位置。丁基橡胶和卤化丁基橡胶极小的不饱和构架以及BIMSM弹性体无不饱和构架的独特特性,在工业上的许多领域中都有应用,这些特性包括极好的蒸气不透过性、耐热降解性,以及与通用橡胶相比显著提高的耐化学性。但是,这种较低的活性需要特殊的条件才能使异丁烯基弹性体硫化。硫化体系类型的选择在硫化产品的性能需求和使用上是一个复杂的操作过程。研究了异丁烯基弹性体硫化体系的类型及选择。     

超细氢氧化铝在搪塑干混料中的应用

生产聚氯乙烯搪塑料制品采用超细的氢氧化铝粉末作为填料可以改善搪塑制品的性能。不同粒径的氢氧化铝粉末对搪塑制品的塑化程度、拉伸强度、断裂伸长率、抑烟、阻燃效果均有不同影响。     

异丁烯基弹性体的硫化（二）

异丁烯-异戊二烯共聚橡胶（丁基橡胶,IIR）、溴化异丁烯-异戊二烯共聚橡胶（溴化丁基橡胶,BIIR）、氯化异丁烯-异戊二烯共聚橡胶（氯化丁基橡胶,CIIR）和溴化异丁烯-对甲基苯乙烯共聚弹性体（BIMSM）的硫化与通用橡胶（GPR）的硫化是不同的。在丁基橡胶骨架上有大约2%的不饱和链,而卤化丁基橡胶（BIIR和CIIR）是在丁基橡胶骨架上与溴原子或氯原子反应后的丁基橡胶,它能够极大地增加丁基橡胶骨架上异戊二烯的化学活性。类似地,在BIMSM弹性体中溴原子被连接到对甲基苯乙烯（PMS）基团上,这样可以给完全饱和的聚合物骨架提供一个化学活性的位置。丁基橡胶和卤化丁基橡胶极小的不饱和构架以及BIMSM弹性体无不饱和构架的独特特性,在工业上的许多领域中都有应用,这些特性包括极好的蒸气不透过性、耐热降解性,以及与通用橡胶相比显著提高的耐化学性。但是,这种较低的活性需要特殊的条件才能使异丁烯基弹性体硫化。硫化体系类型的选择在硫化产品的性能需求和使用上是一个复杂的操作过程。研究了异丁烯基弹性体硫化体系的类型及选择。     

年产500吨氯化丁基橡胶技术通过鉴定

2006年3月8日,江苏省南通市科委主持召开了南通市东腾特种橡胶有限公司研发的年产500t氯化丁基橡胶技术鉴定会。该项技术首次运用多段时豫法和微观混合反应器进行氯化,采用优选的助剂介入调和,形成米粒状颗粒;采用自行设计的负压干燥器及选定的氯化、中和及后处理工艺条件及设备。产品经北京橡胶工业研究设计院等单位进行测试并与国外同类产品进行了性能对比试验。产品性能达到国外同类产品水平。氯化丁基橡胶是国内橡胶加工企业期盼多年的合成橡胶新品种,南通东腾氯化丁基橡胶产品的问世,将有助于推动国产氯化丁基橡胶、溴化丁基橡胶的产业…     

硫化锌对氯化丁基橡胶胶料和硫化胶性能的影响

硫化锌对氯化丁基橡胶胶料和硫化胶性能的影响НосниковА．А．著赵瑞明译氯化丁基橡胶（ХБК）是生产橡胶工业制品（РТИ）很有前景的原材料。然而，由于它含有一定的金属氧化物，使胶料的工艺性能不够好（耐焦烧性能低）．动态耐久性小．同时也有报导［１］...     

橡胶加工专利

一、轮胎 用于充气轮胎的轻量级耐久性内衬层丁基橡胶胶料 该专利介绍的胶料包含（A）100丁基橡胶、（B）无机填充剂和（C）聚丙烯粉末,而且质量比满足下式：C≤（B＋C）／2。胶料配方含有90份卤化丁基橡胶（牌号Exxon Mobil 1068）、10份SBR、65份N550炭黑和5份聚丙烯粉末（牌号H700）,硫化制成试片后,其显示出滚动阻力低、透气性好特点。     

低透气性丁基橡胶纳米复合材料的理论与实践

异丁烯基聚合物、聚异丁烯的均聚物、丁基橡胶（异丁烯一异戊二烯共聚物）、卤化丁基橡胶（溴化或氯化丁基橡胶）和Exxpro（溴化异丁烯一对甲基苯乙烯共聚物）的重要特征,是它们共同具有低透气性,同时拥有较低的玻璃化转变温度（Tg）。对大多数聚合物而言,低的Tg（这需要远低于室温或使用温度以满足弹性体的性能）与高度的链迁移率相关,同时这也导致了材料的高透气性     

子午线轮胎用合成橡胶的概况

介绍子午线轮胎用合成橡胶概况。子午线轮胎常用的合成橡胶主要有：丁苯橡胶（SBR）,包括乳聚丁苯橡胶（ESBR）、溶聚丁苯橡胶（SSBR）、充油丁苯橡胶;聚丁二烯橡胶（BR）,包括镍系顺丁橡胶、钕系顺丁橡胶、低顺式聚丁二烯橡胶（LCBR）;卤化丁基橡胶（XIIR）,包括氯化丁基橡胶（CIIR）、溴化丁基橡胶（BIIR）等。通过应用实例介绍各胶种主要牌号产品对子午线轮胎性能的影响。     

新型氯化丁基橡胶废胶再生方法及其应用

丁基橡胶是合成橡胶中的主要产品之一。为了使丁基橡胶在更多的领域和不同的需求中得到更好的应用,在丁基橡胶中引入卤素,从而制得了氯化丁基橡胶和溴化丁基橡胶。氯化丁基橡胶可以与天然橡胶、氯丁橡胶、丁苯橡胶、顺丁橡胶等高不饱和的橡胶并用,其应用范围越来越广泛,用胶量与日俱增。与此同时,每年产生边角废料及使用后的废弃胶料达数万吨。株洲融城新材料应用技术研究所通过两年多的反复试验和研究,发明了一种新型氯化丁基橡胶废胶再生方法。采用该工艺将氯化丁基橡胶制品生产过程中的边角废料及使用后废弃物加工成一种新型胶种,即氯化…     

Effect of particle size on the properties of Mg(OH)2‐filled rubber composites

A novel nanomagnesium hydroxide powder and three kinds of micro‐Mg(OH)₂, with different particle sizes, were chosen as fillers and mixed with ethylene–propylene–diene monomer rubber (EPDM) to form a series of composites by a traditional rubber‐processing technique. The results showed that the mechanical properties of composites improved with decreasing particle size. The nanocomposites were far stronger than the microcomposites, which also supported the view that rubber reinforcement requires nanoreinforcement. The effect of particle size on the fire resistance of composites was investigated by cone calorimetry and limiting oxygen index analysis, which showed that the particle size of powder had an impact on the fire resistance of composites. For the composites filled with untreated powder, the peak value of heat release rate decreased and T_ign increased with decreasing particle size. In conclusion, the fire resistance of nanocomposites was better than that of microcomposites. Surface modification of particles sometimes substantially improved the mechanical properties of nanocomposites, but had no effect on either the mechanical properties of microcomposites or the fire resistance of nanocomposites and flame retardance. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 2341–2346, 2004     

表面改性牧草纤维与橡胶粉的耦合作用对水泥胶砂力学性能的影响

废旧橡胶粉的循环应用可以有效减轻环境污染,同时,牧草纤维的利用被视为低碳建筑工业的重要举措.为了充分利用这两种材料,以掺入表面改性牧草纤维和废旧橡胶粉的水泥胶砂为研究对象,通过水泥胶砂力学性能试验和微观角度分析,研究了表面改性牧草纤维和不同目数及掺量橡胶粉对水泥胶砂力学性能的影响.试验结果表明:掺入表面改性牧草纤维能有效提升水泥胶砂的抗折性能.同时掺入改性牧草纤维和橡胶粉的试验组韧性性能优于单独掺入改性牧草纤维的试验组.当改性牧草纤维掺量为2 kg/m3,掺量为2％的20目橡胶粉的水泥胶砂强度最好.     

D类干粉灭火系统在烷基铝类化学品消防中的应用

对烷基铝类火灾的特点与灭火剂种类选择等进行了分析,结合异戊橡胶装置中烷基铝类催化剂配制区固定干粉灭火系统的消防保护工程设计实例,从D类干粉灭火系统原理、系统设计、系统组成等几个方面进行了较为详细的阐述,期望为今后类似工程的消防设计提供经验和指导。     

胶粉的制备和改性方法及应用研究进展

介绍胶粉的制备方法和改性方法,以及胶粉在橡胶工业、建筑工业和塑料工业等领域的应用研究进展。胶粉制备方法主要有常温粉碎法、低温粉碎法和溶液粉碎法,改性方法主要有物理法、化学法和微生物法。胶粉作为一种再生资源应用广泛,发展前景广阔,胶粉生产将成为废旧橡胶循环利用的主要方式。     

煤矸石粉填充硫化天然橡胶性能的研究

对废弃煤矸石进行超细粉碎、焙烧,用环氧化天然橡胶(ENR)进行表面处理,然后与硫化天然橡胶(NR)充分混炼,对混炼胶表观交联密度、补强性能、应用性能、动态力学性能等进行了测定。试验结果表明,超细煤矸石粉对NR具有较好的补强性能和分散性。经过ENR改性处理后的煤矸石粉其性能更好,完全可以作为补强填料取代或部分取代炭黑。     

胶粉的生产及应用

将废橡胶加工成胶粉是废橡胶再利用的有效方法，国外发达国家占50％以上，我国仅占5％。胶粉的生产方法以有常温粉碎法为主，还有低温粉碎法和湿法粉碎法。国内胶粉应用的关键是拓展公路应用。     

Microwave absorbing rubber composites containing carbon black and aluminum powder

Natural rubber (NR), epoxidized natural rubber (ENR), and chlorosulfonated polyethylene (CSM) composites filled with conductive carbon black and aluminum powder have been prepared by using a two‐roll mill. An electromagnetic interference shielding effectiveness of those rubber composites was carried out in the frequency range of 8–12GHz (X‐band microwave). The increase of filler loading enhanced shielding effectiveness of the rubber composites. Conductive carbon black was more effective in shielding than aluminum powder. Binary filler‐filled rubber composites showed higher shielding effectiveness than that of single filler‐filled rubber composites. It has been observed that the shielding effectiveness of these rubber composites could be ranked in the following order: ENR ≥ CSM > NR, whereas the mechanical properties of the rubber composites were in the order of CSM > ENR > NR. The correlation between shielding effectiveness and electrical conductivity as well as mechanical properties of the rubber composites are also discussed. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007     

Good dispersion of hydrophilic nanoscale calcium carbonate particles in nitrile butadiene rubber matrix

Using the industrial technologies of rubber latex irradiation, hydrophilic nanoscale calcium carbonate (HNCC) slurry preparing and spray drying, we have prepared a novel ultrafine full-vulcanized powder nitrile butadiene rubber (UFPNBR)/HNCC nanocompound, in which the UFPNBR particles and HNCC particles are isolated and adhered to each other. When the UFPNBR/HNCC nanocompound powder is mixed with crude NBR, UFPNBR particles are easily dispersed well in NBR matrix because of their good compatibility, thus the HNCC particles are also dispersed in NBR matrix because of the carrier aidance of UFPNBR particles in 7 phr HNCC loading range, then the novel NBR/UFPNBR/HNCC ternary nanocomposites is fabricated. Compared with NBR/organic reagent-treated HNCC (ONCC) binary composites, the NBR/UFPNBR/HNCC ternary nanocomposites has shorter vulcanization time and better properties of abrasive resistance, oil resistance, dynamic compression properties and flame retardancy in fire.     

Simulation of high velocity compaction of powder in a rubber mould with characterization of silicone rubber and titanium powder using a modified split Hopkinson set-up

The paper introduces a method for characterization of silicone rubber and titanium powder in high velocity compaction using the split Hopkinson set-up. The impact test data has been used to estimate parameters in constitutive models for rubber and powder. A finite element study has been performed with different geometrical design of the high velocity compaction of titanium powder against an aluminium mandrel using a rubber mould as pressing medium. One goal of this study is to investigate if and how the manufacturing method can be applied for making dental copings.A conclusion of the experimental work is that it is possible to characterize rubber material and powder material for high velocity compaction of metal powder by the use of a modified split Hopkinson pressure bar set-up. The numerical simulation shows qualitatively good agreement with the experience from practical tests. In conclusion, the work shows the possibility to numerically study the geometric design and to optimize the densification behaviour of a complex high velocity compaction process.     

Effect of phytate doped cobalt and copper ion modified carbon nanotubes on flame retardancy and ceramic properties of silicone rubber

Silicone rubber (SR) has excellent properties, such as high and low temperature resistance and weather resistance. However, the flame retardancy of SR is rather poor, which severely limits the range of application of SR. Therefore, it is necessary to make certain modifications in order to improve its flame retardancy. In this study, wollastonite, low-melting glass powder, and phytate-modified carbon nanotubes (CPCC) were added to SR to prepare ceramizable silicone rubber (CSR) composites with good fire safety performance. The effect of CPCC on the flame retardancy and ceramization properties of CSR materials was investigated. The results showed that, with the addition of 3 phr of CPCC, the limiting oxygen index of the CSR composite material reached 33.8%, which was 26.1% higher than that of pure SR, and its UL-94 grade reached V-0 grade. The results of the cone calorimeter test showed that the total heat release of the CSR composite with three parts CPCC was reduced by 26.6%, and the peak heat release rate reduced by 13.1%. In addition, after the CSR6 composite was calcined at 1000°C for 1 h, the ceramic body formed by the composite had good supporting properties, and its bending strength was as high as 6.17 MPa.