Effect of reversion on structure and properties of NR vulcanizates;
硫化返原对NR硫化胶结构与性能的影响
Kinetics of reversion process in NR vulcanization;
NR硫化返原过程的动力学研究
Effect of the anti-recovery agents Perkalink900 and AK-73 on the anti-reversion,the physical-mechanical and heat build-up properties of pure natural rubber compound were investigated.
研究了抗硫化返原剂Perkalink900(简称PK900)、AK-73对纯天然橡胶复合体系的抗硫化返原性能、物理机械性能及生热性能的影响,结果表明:无论是在普通硫化体系还是在半有效硫化体系中,加入一定量PK900、AK-73后,胶料的抗硫化返原性能均得到提高。
In this paper,effects of conventional cure system(CV),effective cure system(EV),semi-effective cure system(SEV),equivalent cure system(EC) on the physical-mechanical properties and cure reversion resistance of cured natural rubber were studied.
研究了普通(CV)、有效(EV)、半有效(SEV)和平衡(EC)四种硫化体系对NR抗硫化返原和硫化胶物理机械性能的影响。
The results showed that by adding anti reversion agent PK900,HTS and Z500,the reversion percentage of rubber compound reduced significantly,the physical property retention of overcured vulcanizate increased,and PK900 was suitable for belt compound that had small deformation,Z500 was suitable for carcass ply compound that had large d.
结果表明,添加抗硫化返原剂PK900和HTS以及Z500,胶料硫化返原率明显降低,过硫化胶的物理性能保持率提高,其中PK900适用于变形较小的带束层胶料,Z500适用于变形较大的胎体帘布胶;采用抗硫化返原剂PK900和HTS并用替代间-甲粘合体系,胶料粘合性能保持不变,生热降低,硫化返原率较高,适用于变形较大的胎体帘布胶。
The results showed that MH,scorch time and t90 of NR compound changed a little when the addition level of the anti-reversion agent SR534 was less than 2 phr;the reversion percentage of NR compound was decreased,the anti-reversion characteristic was improved as the addition level of the anti-reversion agent SR534 increased.
结果表明,抗硫化返原剂SR534用量不超过2份时,NR胶料的MH、焦烧时间和t90变化不大;随着抗硫化返原剂SR534用量的增大,NR胶料的硫化返原率减小,抗硫化返原性能提高。
The results show that the addition of struktol A-73 to the compound has the following advantages: improved overcure-reversion resistance and thermal stability, Increasead efficiency of vulcanizaimproved dynamic performance, lower heat build-up and compression set, freefrom thepotential pollution of nitrosamine, minimal adverse effect on the adhesion with steel cord after aging.
研究了活化剂ＳｔｒｕｋｔｏｌＡ－７３在天然橡胶及天然橡胶与丁苯橡胶并用胶中的应用特性，结果表明：胶料中加入ＳｔｒｕｋｔｏｌＡ－７３可改善胶料的抗硫化返原性和热稳定性；提高胶料的硫化效率；改进胶料的动态性能；降低胶料的生热和压缩永久变形；与噻唑类硫化促进体系并用，无亚硝胺污染环境的危险；对钢丝粘合性能造成的影响，在胶料老化之后即可降至最小；混炼工艺性能良好。
Effects of Different Curing Systems on the Anti-Curing-Reversion of NR Vulcanizates
不同硫化体系对NR抗硫化返原性的影响
Effects of anti-reversion agent SR534 on properties of NR compound
抗硫化返原剂SR534对NR胶料性能的影响
Comparison Research of Anti-reversion Agent SR534 and PK900 in NR
抗硫化返原剂SR534与PK900在NR中的对比研究
Studies on the Preparation of NR Vulcanizates with High Modulus, Elongation and Its Anti-Reversion Properties
高定伸高伸长NR硫化胶的制备及其抗返原性的研究
Effect of Anti-reversion Agents on the Properties of NR Cured by Semi-efficient Vulcanization System
抗返原剂在天然橡胶半有效硫化体系胶料中的作用
STUDY ON REDUCTION AND SULFIDATION OF CeO_2 DESULFURIZER AT HIGH TEMPERATURE
氧化铈高温煤气脱硫剂的还原与硫化
Hematological Changes in People Returned to Plain from Plateau
高原移居者返平原后血液学变化观察
bis-ethyl xanthogen disulfide (BXD)
二硫化双乙基磺原酸酯
Sulfate-reducing bacteria(SRB) in sewage sludge and release of H_2S
污泥硫酸盐还原菌(SRB)与硫化氢释放
Study on the Domestication and Desulphurization of the Sulfate-reducing Bacteria
硫酸盐还原菌的驯化及脱硫性能研究
Research of Development of Reaction Reducing SO_2 into S by Way of Catalyzing Reduction;
催化还原法转化二氧化硫生成硫的研究进展
Removal of Hydrogen Sulfide in Pressurized Coal Gasification with Calcium-Based Sorbents and Oxidation of Calcium Sulfide;
加压煤气化钙基脱硫剂还原脱硫及硫化钙氧化的研究
A sulfide containing three sulfur atoms per molecule.
三硫化合物每个分子中包含有三个硫原子的硫化物
A sulfide compound containing at least two sulfur atoms per molecule.
多硫化物每个分子中至少含有两个硫原子的一种硫化物
The Isolation and Purification and Characterization of Sulfite Acceptor Oxidoreductase;
排硫硫杆菌亚硫酸盐受体氧化还原酶的纯化和性质
Study of Reduction and Sulfidation Behavior of Iron-manganese Based Sorbents in Medium and High Temperature Coal GAS
Fe-Mn中高温煤气脱硫剂还原硫化行为研究
Domesticated Cultivation of Sulfate-reducing Bacteria and Its Performanceof Sulfate Removal
硫酸盐还原菌的培养驯化及其脱硫性能
THE PHASE,REDUCTION & SULFIDATION PERFORMANCE OF THE MIXED ZnO HOT COAL GAS DESULFURIZATION SORBENTS
复合ZnO高温煤气脱硫剂的物相、还原及硫化行为