硫化胶粉与脱硫胶粉改性沥青性能研究

对比分析了硫化胶粉和脱硫胶粉微观结构及其改性沥青基本路用性能,研究了硫化胶粉和脱硫胶粉在改性沥青过程中表现出的共性与差异及其原因。结果表明,加入硫化胶粉与脱硫胶粉,均能提高沥青基本路用性能,相同目数下,脱硫胶粉较硫化胶粉交联密度低,表面粗糙,表面极性增加,脱硫胶粉与沥青具有更好的相容性和稳定性,一定掺量下,硫化胶粉能赋予沥青更好的高温稳定性,脱硫胶粉能显著提高沥青低温延度,界面作用及胶粉网络结构的形成对改性沥青路用性能有重大影响。     

硫化胶粉的活化研究

研究过渡元素金属盐／有机胺对胎面硫化胶粉的活化，以及胶粉粒度、活化温度和时间与活化胶粉硫化胶物理性能的关系。实验结果表明：氯化亚铜／二亚乙基三胺对硫化胶粉的活化效果较好；增大活化体系中氯化亚铜和二亚乙基三胺的浓度，减小硫化胶粉的粒度，采用较低的活化温度，均可提高硫化胶粉的活化效果。     

改革开放三十年硫化胶粉的进展

本文叙述了我国硫化胶粉三十年来的发展历程，硫化胶粉从无到有，其质量从有到优，并阐述了胶粉的应用范围及优越性以及未来的发展前景。     

硫化胶粉的形态结构及其在胎面胶中的应用

从常温法和冷冻法硫化胶粉的粒子形态结构着手,研究了硫化胶粉的品种、细度和用量对胎面胶的加工性能和物理性能的影响。结果表明,加入硫化胶粉的胶料加工性能得到改善,硫化胶的物理性能随胶粉用量增大略有下降。添加少量胶粉（１０份以下）对硫化胶物理性能无明显影响。冷冻法胶粉的使用性能优于常温法胶粉。     

废胶粉改性方法的研究进展

介绍了废旧橡胶资源化再利用的发展趋势,分析了硫化胶粉在胶料中的作用,并重点综述了近几年来国内外废胶粉改性的主要方法。最后,对废胶粉改性方法的发展进行了展望。     

硫化胶粉在胶管胶带中的应用

从硫化胶粉的应用技术着手，分别采用直接掺用胶粉，对胶粉精炼后掺用以及添加胶粉时适当调整硫化体系3种不同的方法，全面系统考察了所用胶料的性能。结果表明，以胶粉经精炼后添加效果最好；添加胶粉时适当调整硫磺用量的效果次之；胶粉的直接掺用效果最差；普通输送带覆盖胶添加20份精炼胶粉，风水胶管外胶掺用45份胶粉（采用调整硫化体系的方法），其性能仍可达到国家标准。     

硫化胶粉/PP共混材料的研究

研究了硫化胶粉/PP共混体系的力学性能、流动性能和热变温度等.结果表明,利用硫化胶粉可以明显改善PP的冲击性能,而且胶粉粒径越小,改善的效果越显著,但共混体系的拉伸强度有所下降.胶粉含量在5%-15%时,共混体系的综合性能较好.     

硫化胶粉／PP共混材料的研究

研究了硫化胶粉／PP共混体系的力学性能，流动性能和热变形温度等。结果表明，利用硫化胶粉可以明显改善PP的冲击性能，而且胶粉粒径越小，改善的效果越显著，但共混体系的拉伸强度有所下降。胶粉含量在5％－15％时，共混体系的综合性能较好。     

活化胶粉胶料的加工性和流变性

研究了胶粉及活化胶粉胶料的加工流变性能。结果表明，胶人及活化胶粉的加入均能缩短胶料的硫化时间，对硫化速度影响不大；采用素炼法及共素炼法均可明显提高活化胶粉胶料硫化胶的物理机械性能；随活化胶粉用量的增加，炭黑共混胶料的粘度变化不大，挤出胀大比减小。     

硫化胶粉在胎面胶中的性能试验

试验了硫化胶粉与再生胶在胎面胶中的应用效果和性能对比。试验结果表明，在胎面胶中使用等量的硫化胶粉或再生胶时，硫化胶粉比再生胶对胶料的硫化性能影响稍大，胶料的扯断强力有所下降，磨耗性能和疲劳性能提高，加工成本降低，加工工艺性能改善。     

Fracture behavior of NR and SBR vulcanizates filled with ground rubber having uniform particle size

The use of recycled rubber including ground scrap vulcanizates in rubber compounds was studied. When ground rubber was incorporated into rubber compounds, the physical properties, especially the tensile strength, were deteriorated compared to the virgin rubber compound. Also, incorporating ground rubber caused a change of the cure behavior via migration of sulfur or an accelerator between the virgin rubber matrix and the ground rubber vulcanizate. In this study, the fracture behavior and abrasion property of carbon black‐filled SBR and NR compounds containing ground rubber vulcanizate were investigated. Also, the effect of the particle size or loading volume of ground rubber powder on those properties was studied. Four different sizes, 420–600, 177–250, 125–150, and 75–88 μm, of ambient ground rubber powder recycled from waste tire were selected and used in the compounding. The loading amounts of ground rubber powder were 10, 30, and 50 phr. The flex crack growth of SBR‐ and NR‐based compounds was altered by the addition of ground rubber particles. More delayed crack growth was observed with an increasing loading volume and decreasing particle size of the ground rubber powders, and this behavior was more prominent in SBR than in NR compounds. Tangent delta, a direct measure of internal energy dissipation, increased with an increasing loading volume of the ground rubber particles. The abrasion rate of ground rubber‐filled compounds was more dependent on the size of the abrasion pattern than on the loading level or particle size of the ground rubber powders. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2491–2500, 2002     

改性胶粉/SBR共混胶料的结构性能研究

研究了硫黄、促进剂、改性胶粉用量对胶粉／ＳＢＲ共混胶料性能的影响。结果表明；改性胶粉用量在１０－３５份的范围内．对共混胶料的静态力学性能影响不大：在１０－２２份的范围内对动态压缩疲劳生热影响不大．适当调整基质胶中硫黄、促进剂的用量．有利于降低胶料的动态压缩疲劳生热。扫描电子能谱微区分析的研究表明：由于硫黄的迁移形成了具有特殊结构的界面过渡层．该过渡层是降低动态压缩疲劳生热的关键。     

湿磨绢云母粉在天然橡胶和丁苯橡胶中的应用

介绍了湿磨娟云母粉在天然橡胶和丁苯橡胶中的应用试验，结果表明，湿磨绢云母粉具有补强性能。作为一种补强填充剂，湿磨绢云母粉应用在橡胶中具有性能价格比优势。     

Thermoplastic elastomers based on recycled high‐density polyethylene,ethylene–propylene–diene monomer rubber,and ground tire rubber

High‐performance thermoplastic elastomers (TPEs), based on recycled high‐density polyethylene (HDPE^R), olefinic type ethylene–propylene–diene monomer rubber (EPDM), and ground tire rubber (GTR) treated with bitumen, were prepared by using dynamic vulcanization technology, and their structure–property relationships were investigated. It was established that special pretreatment of GTR by bitumen confers outstanding mechanical properties on the resulting TPEs. TPEs, containing GTR pretreated by bitumen, exhibit thermal behavior similar to that of the HDPE^R/EPDM basic blend in the temperature region up to about 340°C. Rheological measurements showed that bitumen acts as an effective plasticizer for the GTR‐containing TPEs. SEM, DSC, and DMTA results revealed improved adhesion between the particles of GTR treated by bitumen and the surrounding thermoplastic matrix, compared to that of the untreated GTR particles. It was concluded that bitumen acts as an effective devulcanizing agent in the GTR treatment stage. In the following steps of TPE production, bitumen acts simultaneously as a curing agent for the rubber components (EPDM/GTR) and as a compatibilizer for the blend components. GTR‐containing TPEs, prepared by extrusion technology, were reprocessed (by passing through the extruder six times) without any observable changes in their tensile properties, thermal stability, and melt viscosity. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 659–671, 2005     

废橡胶制取细胶粉的技术开发及应用概况

简述了废橡胶制取细胶粉相对于废橡胶回收利用其它方式的优点;介绍了废橡胶制取细胶粉的新工艺,包括干法、湿法、冷冻法、臭氧回收法及爆炸法;详细综述了目前废橡胶制取细胶粉的新装备.     

胶粉/聚烯烃类热塑性硫化胶共混材料的研究

研究胶粉/聚烯烃类热塑性硫化胶(TPV)共混材料的力学性能、耐油性、热稳定性、动态力学性能及材料的界面増容,并采用扫描电镜对共混材料的断面微观形貌进行了表征分析。研究结果表明:TPV/胶粉共混材料的力学性能随着胶粉粒径的减小而提高;增容剂PP-g-MAH可有效地改善胶粉与TPV的相容性,提高共混材料的力学性能;同时,胶粉和增容剂的加入增强了TPV的耐油性。     

废旧轮胎胶粉/聚苯乙烯共混物性能研究

研究废旧轮胎胶粉( GTR)粒径和用量以及相容剂种类和用量对GTR/聚苯乙烯(PS)共混物性能的影响.结果表明:GTR可以改善PS的脆性,提高PS的抗冲击性能,但会使拉伸性能降低;GTR粒径越小,GTR/PS共混物的抗冲击性能越好;相容剂乙烯-丙烯酸酯-甲基丙烯酸缩水甘油酯和苯乙烯-丁二烯-苯乙烯嵌段共聚物( SBS)能大幅改善GTR/PS共混物的抗冲击性能,相容剂马来酸酐接枝聚丙烯以及甲基丙烯酸甲酯、丁二烯和苯乙烯的三元共聚物对GTR/PS共混物的抗冲击性能改善不大;GTR(粒径为75 μm)/PS/相容剂SBS用量比为40/100/10时,GTR/PS共混物的综合性能较好,缺口冲击强度达到4.87 kJ·m-2.     

高掺量橡胶沥青的结构与性能

轮胎胶粉的多重交联网络限制了其在橡胶沥青中的胶粉掺量。用经螺杆反应挤出方法可控再生的再生胶可制备高掺量（质量分数不小于30%）橡胶沥青。通过溶胶含量、门尼黏度和基本性能测试及加工实况观察,并结合红外光谱和光学显微镜微观分析,探讨了胶粉的再生程度及用量对高掺量橡胶沥青结构与性能的影响。结果表明,再生过程中胶粉的化学键发生断裂,部分交联网络被破坏。与传统橡胶沥青相比,高掺量橡胶沥青的分散更均匀,加工流动性和高温储存稳定性均得以改善。提高胶粉的降解再生程度可明显提高其在沥青中的掺量,进一步提高改性沥青的低温柔性和高温抗变形能力,但易出现加工黏度的临界陡增现象。     

橡套电缆用EPDM与CPE共用绝缘橡皮的配方研究

研究了满足橡套电缆使用的绝缘橡皮的性能特点;探讨了基体材料体系、配合剂体系的选择;试验并确定了绝缘橡皮的中试配方;放线生产并检测了绝缘橡皮的性能。实验结果表明:研制的橡套电缆用EPDM与CPE共用绝缘橡皮,其力学性能、工艺性能均满足橡套电缆使用及生产要求。     

多苯基聚硅氧烷对硅橡胶阻尼性能的影响

以低苯基硅橡胶为基胶,通过添加多苯基聚硅氧烷,制备出阻尼硅橡胶,并对其性能进行了研究。结果表明,加入铂催化的多苯基聚硅氧烷能显著提高硅橡胶在-50-150℃温度区域内的阻尼系数;多苯基聚硅氧烷中侧基数量越多,阻尼系数峰值出现的温度越高。加入铂催化的多苯基聚硅氧烷能够显著提高硅橡胶的撕裂强度和断裂伸长率,对硅橡胶的拉伸强度和热稳定性影响不大。两种催化体系合成的多苯基聚硅氧烷对硅橡胶阻尼系数的影响不同,Ph3SiO-接枝率较低时,加入锡催化剂多苯基聚硅氧烷的硅橡胶的阻尼峰值较高;接枝率进一步增加时,加入铂催化多苯基聚硅氧烷的硅橡胶的阻尼系数曲线出现尖峰,而加入锡催化剂多苯基聚硅氧烷的硅橡胶的阻尼峰仍呈现宽峰。