再生胶做鼠标垫的工艺研究

分析了市场上现有鼠标垫的性能、价格，从节省成本和提高性能的角度出发，以再生胶为原料，进行了新的工艺设计，并对产品的邵尔A型硬度、拉伸强度、弹性模量、磨耗和扯断伸长率等进行了测试。结果显示：在此工艺条件下所产生的橡胶鼠标垫，其性能与同类产品相当。     

再生胶鼠标垫工艺条件的确定

对计算机再生胶鼠标垫工艺条件进行了探讨。再生胶塑炼和胶料混炼在开炼机上进行 ,最佳工艺条件确定为 :塑炼辊温　 40～ 45℃ ,塑炼辊距　 2～ 3mm ,塑炼辊速比　 1∶( 1 0 5～ 1 1) ,塑炼时间　 6min ;混炼辊温　 5 5～ 60℃ ,混炼辊距　 3～ 5mm ,混炼辊速比　 1∶( 1 0 5～ 1 0 8) ,混炼时间　 3 5min ;硫化条件　 13 0℃ /6MPa× 2 5min。在该工艺条件下制得的再生胶鼠标垫性能优于普通市售品 ,且成本较低。     

含有再生胶的胶料配方设计

简要介绍了各类再生胶的生胶物质含量、基本成分及性能，将再生胶加入胶料中，必须用相应的再生胶成分以１：１的比例代替胶料中的配合剂。     

含有再生胶的胶料配方设计

简要介绍了各类再生胶的生胶物质含量，基本成分及性能，将再生胶加入胶料中，必须用相应的再生胶成分以１：１的比例代替胶料中的配合剂。     

丁基橡胶再生胶在自行车内胎配方中的应用

试验研究丁基橡胶（IIR）再生胶在自行车内胎配方中的应用。结果表明：自行车内胎配方中添加50份IIR再生胶后,胶料物理性能有所降低,包辊性能和接头性能受到一定影响,但收缩率降低,挤出速度提高,挤出温度降低;成品内胎气密性能略有下降,耐久性能基本不变。     

氯化聚乙烯与再生胶共混物的性能研究

氯化聚乙烯（ＣＰＥ）与再生胶共混技术的关键在于共混物配方中硫化促进剂体系和增塑剂体系的调整。以ＣＰＥ１００份，鞋类再生胶２００份（或３００份）作硫黄，ＤＢＦ（邻苯二甲酸二丁酯）变量试验，同时兼顾其它助剂配合，确定的共混胶料配方，辅之以一定的生产工艺条件，制成的ＣＰＥ与再生胶共混物可用于夹布胶管，吸水胶管，特种Ｖ带压缩胶，胶鞋，胶板，车窗密封条等多种橡胶产品。     

丁基再生胶的应用性研究

研究了丁基再生胶与丁基胶共混后性能的变化情况,着重研究丁基再生胶的实际应用。结果表明：通过共混部分丁基再生胶使胶料的加工性能得到了良好的改善,其它物理机械性能无明显变化,得出了共混再生胶及其它配合剂的最佳份数。     

新型再生胶的生产工艺和性能研究

研究了一种废弃橡胶利用新技术,通过使少量专用化学处理剂和胶粉一起混炼薄通而制成具有塑性,且与生胶有良好相容性的新型再生胶。生产中所用的化学处理剂用量少且 不需高温,对环境无污染。     

Influence of rubber composition on change of crosslink density of rubber vulcanizates with EV cure system by thermal aging

Variation of the crosslink density of a rubber vulcanizate depending on the rubber composition after the thermal aging was studied with single rubber, biblend, and triblend vulcanizates of natural rubber (NR), butadiene rubber (BR), and styrene‐butadiene rubber (SBR). The efficient vulcanization (EV) system was employed to minimize the influence of free sulfur in the vulcanizate on the change of the crosslink density. Thermal aging was performed at 40, 60, and 80°C for 20 days with 5‐day intervals. The crosslink densities of the vulcanizates after the thermal aging increase. For the single rubber vulcanizates, variation of the crosslink density by the thermal aging has the order: SBR > BR > NR. For the biblend vulcanizates, variations of the crosslink densities of the NR/SBR and SBR/BR blends are larger than that of NR/BR blend. Variation of the crosslink density of the vulcanizate increases by increasing the SBR content in the vulcanizate. Variation of the crosslink density of the rubber vulcanizate depending on the rubber composition was explained by miscibility of the blends, combination reaction of the pendent groups, and mobility of the pendent group. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 1378–1384, 2000     

氯丁橡胶/丙烯酸酯橡胶共混研究

丙烯酸酯橡胶(ACM)的耐热老化性能和耐油性能较好,但力学性能较差。而氯丁橡胶(CR)的力学性能较高,耐温性能较差。两种橡胶并用可使力学性能和热老化性能有显著的提高。采用丙烯酸酯橡胶(ACM)和氯丁橡胶(CR)共混改性,通过偏光显微镜(×400)对共混物中两种橡胶的分散情况进行了分析。研究了CR/ACM共混物质量比、混炼和硫化工艺对共混物性能的影响,结果表明:当CR/ACM并用比在75/25时,采用过氧化二异丙苯、氧化锌、硫磺共硫化体系,白炭黑在混炼时分两次加入,硫化条件为165℃×10 MPa×30 min时,获得的CR/ACM共混物具有优异的力学性能和热老化性能。     

无卤阻燃型天然橡胶的研究

该文研究了阻燃剂种类和用量对天然橡胶硫化胶的阻燃性能、力学性能和硫化特性的影响。结果表明：单用氢氧化铝时,随着用量增加,硫化胶阻燃性能上升,但力学性能有所下降,氢氧化铝用偶联剂A151表面改性处理后,硫化胶力学性能有所改善;红磷作为阻燃剂用量比较少,在提高硫化胶阻燃性的同时可改善其力学性能;氢氧化铝、红磷和三氧化二锑并用可产生较好的阻燃协同效果,同时会加快橡胶的硫化速度。     

低溴化天然橡胶的研究

对自制的低溴化天然橡胶(BNR)的溴含量、红外谱图、在甲苯中溶解性能、不饱和度及综合力学性能进行研究分析。结果表明:随着反应过程中溴化液用量的增加,制得的低溴BNR的溴含量也增大,且溴含量不与溴化液用量成线性正比关系;溴化天然胶乳的红外光谱分析表明,溴已经接到天然橡胶分子链上,其C-Br键对应的红外光谱位置分别为956 cm-19、08 cm-1;在常温下,低溴BNR在甲苯中溶解性较差,在水浴加热70℃情况下,对低溴BNR在甲苯中的溶解性略有改善,同时随溴含量的增加,溶解性也越差。经塑炼后的低溴BNR在水浴加热70℃的情况下,对低溴BNR能完全溶于甲苯溶剂中;制得的低溴BNR的不饱和度略有降低,不饱和度随溴化液用量的增加变化不大;低溴BNR的加工性能总体较好,经溴化后的天然橡胶较纯胶的综合力学性能都有所下降,其中当硫磺用量为2.7份时,综合力学性能相对较好。     

高乙烯基聚丁二烯交联四丙氟橡胶性能的研究

采用不同量的高乙烯基聚丁二烯橡胶(HVBR)作为助交联剂,以过氧化二异丙苯引发交联四丙氟橡胶(FEPM),制备具有新型交联结构的FEPM/HVBR共混胶,同时表征该橡胶的硫化特性、物理性能、断面形貌、溶胀度和热性能。结果表明:随着HVBR用量的增大,共混胶的硬度和拉伸强度增大,拉断伸长率降低,加工安全性和流动性变优;共混胶的玻璃化温度与FEPM接近,且随着HVBR用量的增大,共混胶的玻璃化温度升高,耐热性能提高。     

Study on foaming water‐swellable EPDM rubber

A foaming ethylene propylene diene terpolymer (EPDM) water‐swellable rubber (WSR) was prepared using the multicomponent mechanical blending technology. The morphology of unfilled and silica‐filled foaming EPDM WSR was studied from micrographs. The average cell size, maximum cell size, and cell density of the foaming WSR had a peak value with a 4‐phr foaming agent loading in both unfilled and silica‐filled WSR. The addition of silica made the average cell size and maximum cell size decrease and the cell uniform. With incorporation of silica, the tensile strength of the unfoaming WSR increased three times, while that of the foaming WSR increased about six times before immersing it into water. After water‐swelling, the mechanical properties of both the unfilled WSR and silica‐filled unfoaming WSR decreased, but that of the silica‐filled foaming WSR increased. The silica filler accelerated the water‐swelling rate and cut down the water‐swelling equilibrium time at the same time. The foaming WSR had a better volume water‐swelling ratio than that of the unfoaming WSR in both the unfilled and silica‐filled WSR. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3712–3717, 2002     

UHF频段轮胎橡胶电性能研究

试验研究炭黑种类和用量等对超高频（UHF）频段轮胎橡胶电性能的影响。结果表明：炭黑种类对橡胶复合材料的电阻率影响较小,但对介电性能影响较大;炭黑用量越高,橡胶复合材料的介电常数（ε）和损耗因子（tanδ）越大。橡胶复合材料介电性能与工作频率关系明显,在UHF频段,随着频率的升高,橡胶复合材料的ε和tanδ下降明显。温度对橡胶复合材料的介电性能有一定的影响,但当频率超过2 GHz时,对tanδ影响较小。     

Influence of rubber composition on migration behaviors of antiozonants in carbon black‐filled rubber vulcanizates composed of NR,SBR, and BR

Migration behaviors of antiozonants in carbon black‐filled rubber vulcanizates with different rubber compositions of natural rubber (NR), styrene–butadiene rubber (SBR), and butadiene rubber (BR) were studied at constant temperatures of 40–100°C and outdoors. Three single rubber‐based vulcanizates, three biblends, and three triblends were used. N‐Phenyl‐N′‐isopropyl‐p‐phenylenediamine (IPPD) and N‐phenyl‐N′‐(1,3‐dimethylbutyl)‐p‐phenylenediamine (HPPD) were employed as antiozonants. Migration rates of the antiozonants became faster with increasing the temperature. The order of the migration rates in the single rubber‐based vulcanizates was BR > NR > SBR. The migration rates in the vulcanizates containing SBR, on the whole, increased with decreasing the SBR content, while those in the vulcanizates containing BR decreased with decreasing the BR content. Difference in the migration behaviors of the antiozonants depending on the rubber composition was explained both by the intermolecular interactions of the antiozonants with the matrix and by interface formed between dissimilar rubbers in the blends. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 237–242, 2001     

舰船用高性能密封橡胶研究(Ⅲ)氟橡胶硫化胶热老化性能研究

研究了热氯老化时间、温度对舰船用氟橡胶硫化胶物理性能的影响。结果表明，氟橡胶硫化胶随着老化温度的升高和老化时间的延长，硬度和拉伸强度呈现先升高后降低的趋势，而伸长率一直降低，恒定压缩永久变形一直上升。耐热添加剂Fe2O3、SnO2i可显著提高氟橡胶的耐热空气老化性能。     

丙烯酸酯橡胶与丁腈橡胶并用研究

对丙烯酸酯橡胶（ACM）与丁腈橡胶（NBR）并用胶的物理机构性能及耐热耐油性能进行了测试考察。实验结果表明,m(ACM):m(NBR)≥70:30的并用胶,综合性能比丁腈橡胶及丙烯酸酯橡胶好、成本低,可代替丙烯酸酯橡胶用作耐热耐油密封件胶料。