化纤加弹机金属铝衬圈胶辊的研制

分析研究了胶辊在工作中的高耐磨性、对化纤的握持力、耐多种纺织油剂、抗静电性等,并进行了相应的配方胶料试验,并确定以丁腈胶与羧基丁腈胶并用为主体胶料,进行了配方优化组合和工艺筛选。该胶辊的室内综合性能达到或优于国外同类产品,能满足纺织设备总装厂及用户使用时的产品质量要求,也能直接作为纺织维修市场的备配件。     

PVC改性体在丁腈橡胶胶辊中的应用研究

PVC改性后与丁腈胶并用,可不需要高温混炼。FVC改性体能显著降低胶料门尼粘度,改善工艺性能,并可提高硫化胶硬度,改善耐热老化性。并用胶料用于高硬度丁腈胶辊的生产,能很好地满足其工艺与成品性能要求。     

对亚二甲苯基二异氰酸酯类聚氨酯弹性体在胶辊中的应用研究

用可浇注的对亚二甲苯基二异氰酸酯（ＰＸＤＩ）类聚氨酯弹性体制取聚氨酯覆盖胶辊。ＰＸＤＩ类弹性体是用ＰＸＤＩ、聚氧四亚甲基二醇、３,３′－二氯－４,４′－二氨基二苯基甲烷通过预聚法制成的。对ＰＸＤＩ类聚氨酯胶辊与亚甲苯基二异氰酸酯（ＴＤＩ）类弹性体胶辊或间亚二甲苯基二异氰酸酯（ＭＸ－ＤＩ）类弹性体胶辊作性能比较。研究这些弹性体的静态机械性能、动态机械性能及热性能。使用动态试验机测定胶辊破裂时间和内部生热与压缩载荷间关系。试验结果表明：ＰＸＤＩ类聚氨酯胶辊的耐用性优于ＴＤＩ或ＭＸＤＩ类聚氨酯胶辊。     

模压纺织胶辊的试制

本文主要介绍我们试制模压纺织胶辊的配方、工艺及模具等。其质量比非模具型胶辊有所提高,且稳定性高,产品合格率达99.8%以上。     

工业胶辊HNBR包覆胶配方变量

工业胶辊ＨＮＢＲ包覆胶配方变量美国《橡胶化学和工艺》１９９４年６７卷１期１８３页报道：许多工艺都使用胶辊运送、成型、印染、叠合层压和涂覆各种材料，如金属、织物、塑料和纸以及在纸和织物等产品制造过程中除去水基和溶剂基流体。用作胶辊包覆材料的弹性体有很多...     

胶印胶辊用聚氨酯弹性体

本文主要介绍一种中硬度(邵氏硬度A30—60)聚氨酯弹性体的合成工艺、配方及其物理机械性能;该弹性体作为胶印胶辊,具有良好的耐油墨及溶剂性,而且耐老化、弹性好;其特点是吸附水性能优良,可完全取代目前国内依赖进口的胶印水辊。     

用于覆铜板回流线聚氨酯胶辊的研制

以聚醚，ＴＤＩ，ＭＯＣＡ为原料研制了胶辊用浇注型聚氨酯弹性体，讨论了预聚体胶及胶辊制备中的影响因素，并且对配方，模具，成型工艺，力学性能等作了简单的介绍，生产的橡胶辊成功地应用在覆铜板生产设备压制回流线中。     

多层复合聚氨酯弹性体胶辊的研制

用聚醚、聚酯多元醇、ＴＤＩ、ＭＯＣＡ、导电炭黑等原料进行了多层复合聚氨酯弹性体胶辊胶料的研究,采用旋转、分次浇注的方法制备了３层复合聚氨酯弹性体胶辊外层胶套,讨论了原料、西方对胶料性能的影响,并介绍了制备工艺,模具及有关参数。     

胶辊的成型工艺及设备

介绍了一般橡胶胶辊和聚氨酯胶辊的成型工艺、成型设备及特点；并指出了聚氨酯胶辊除了具有成型工艺简单、设备投资少等优点外，其使用性能也明显优于橡胶胶辊。     

新型接枝胶在丁腈胶辊上的初步探讨

介绍了新型接枝胶在丁腈胶辊上的应用,对其在丁腈橡胶中工艺性能、配比、增塑剂的选择作了初步的研究,从而表明该接枝胶的性能特点,以期推动它在橡胶行业中的广泛应用。     

耐热聚氨酯胶辊的研制

采用3,3’－二氯－4,4’－二氨基二苯甲烷（MOCA）和含有异氰脲酸酯环的三元醇（简称E）作为混合扩链交联剂,并添加无机耐热填料石英粉及石墨粉,制备了一种具有较好耐热性的聚氨酯（PU）弹性体。考察了MOCA／E摩尔比及填料添加量等对PU弹性体物理性能及热空气老化性能的影响。经改进后的PU胶辊与MOCA扩链的PU胶辊相比,使用寿命延长了1倍。     

Dynamically vulcanized nitrile rubber/polyoxymethylene thermoplastic elastomers

A new type of oil‐resistant thermoplastic elastomer of nitrile rubber (NBR) and polyoxymethylene (POM) prepared by dynamic vulcanization were studied. The effects of the curing systems for NBR, acrylonitrile content in NBR, POM content, thermal aging, and reprocessing have on the mechanical properties of NBR/POM thermoplastic elastomers were investigated in detail. NBR/POM thermoplastic elastomers have high tensile strength and excellent oil resistance at elevated temperature. NBR/POM thermoplastic elastomers can be produced in a wide range of hardness. NBRs with higher acrylonitrile content are more suitable for preparing NBR/POM thermoplastic elastomer with high tensile strength and good oil resistance. The NBR/POM thermoplastic elastomer has significantly improved electrical insulation properties compared with NBR (Gessler, M. U.S. Pat. 3,037,954, 1962). © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2641–2645, 2000     

Thermoplastic polyurethane and nitrile butadiene rubber blends with layered double hydroxide nanocomposites by solution blending

Polymer blending coupled with nanofillers has been widely accepted as one of the cheaper methods to develop high‐performance polymeric materials for various applications. In the present work, dodecyl sulfate intercalated Mg? Al‐based layered double hydroxide (DS‐LDH) was used as nanofiller in the synthesis of polyurethane blended with nitrile butadiene rubber (PU/NBR; 1:1 w/w) nanocomposites, which were subsequently characterized. X‐ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the partial dispersion of Mg? Al layers in PU/NBR blends at lower filler content followed by aggregation at higher filler loading. In comparison to the neat PU/NBR blend, the tensile strength (156%) and elongation at break (21%) show maximum improvement for 1 wt% filler loading. The storage and loss moduli, thermal stability and limiting oxygen index of the nanocomposites are higher compared to the neat PU/NBR blend. Glass transition temperature and swelling measurements increase up to 3 wt% DS‐LDH loading in PU/NBR compared to either neat PU/NBR or its other corresponding nanocomposites. XRD and TEM analyses indicate the partial distribution of DS‐LDH in PU/NBR blends suggesting the formation of partially exfoliated nanocomposites. The improvements in mechanical, thermal and flame retardancy properties are much greater compared to the neat blend confirming the formation of high‐performance polymer nanocomposites. Copyright © 2009 Society of Chemical Industry     

NBR／HDPE热塑弹性体的形态与性能

用动态硫化方法制备也ＮＢＲ／ＨＤＰＥ共混型热塑弹性体,电子显微镜研究其形态表明,尽管ＮＢＲ的用量超过了ＨＤＰＥ,但ＮＢＲ仍为分散相,ＨＤＰＥ为连续相,使该材料表现出热塑性。应力－应变性能和动态力学研究表明,该产品在室浊下表现出良好的弹性行为,且力学性能较好,但永久变形较大。     

Dynamically vulcanized nitrile rubber/polypropylene thermoplastic elastomers

A new compatibilized method was used to prepare thermoplastic elastomer (TPE) of nitrile rubber (NBR) and polypropylene (PP) with excellent mechanical properties by dynamic vulcanization. Glycidyl methacrylate (GMA) grafted PP/amino‐compound was used as a compatibilizer. The effects of the curing systems, compatibilizer, PP type, and reprocessing on the mechanical properties of NBR/PP thermoplastic elastomers were investigated in detail. Experimental results showed that the addition of amino‐compound in the compatibilzer can significantly increase the mechanical properties of the NBR/PP thermoplastic elastomer. Compared with other amino‐compounds, diethylenetriamine (DETA) has the best effect. PP with higher molecular weight is more suitable for preparing NBR/PP thermoplastic elastomer with high tensile strength and high elongation at break. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2862–2866, 2002     

Thermoplastic elastomers of butadiene-acrylonitrile copolymer and polyamide. VI. Dynamic crosslinking by different systems

The dynamic crosslinking of butadiene-acrylonitrile copolymer (NBR) with polyamide 6 thermoplastic elastomer are studied. The effect of curing systems and the amount of curing agent are described. It is found that the NBR/PA6 60/40 ratio and phenolic curing system have a significant effect on the physical, mechanical, and thermal behavior of the elastomer. Scanning electron microscopy studies show that in the phenolic cured NBR/PA6 60/40 ratio the rubber phase is still the dispersed phase. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2057–2066, 2000     

低模量聚酯型PU弹性体力学性能的研究

以聚楷酯二醇、甲苯二异氰酸酯（TDI）和扩链剂为原料,制备浇注型PU弹性体,研究了预聚法和一步法、聚酯与聚醚、80/20-TDI和2,4-TDI、聚酯二醇的种类及其相对分子质量、弹性体交联点相对分子质量和硬段质量分数对弹性体力学性能的影响。结果表明,采用预聚法,以聚酯和80/20-TDI为原料合成的PU弹性体的综合性能较好。3种聚酯型PU弹性体中,聚丁二醇己二酸酯二醇的PU弹性体的综合力学性能最好。交联点相对分子质量为4500时,PU弹性体的强度为最大值。     

异氰脲酸酯基团对聚氨酯弹性体性能影响研究

引入异氰脲酸酯基团可提高聚氨酯弹性体的耐热性能,但同时对其他性能有一定影响。通过改变NCO含量考察异氰脲酸酯基团对聚氨酯弹性体的力学性能及耐溶剂性能的影响。力学性能测试结果表明,其硬度、拉伸强度和撕裂强度均在NCO质量分数为8％时达到极大值,分别为邵A60、10．33MPa和48．84kN／m,扯断伸长率随NCO含量增加单调减小,100％定伸强度单侧增大;耐溶剂实验表明,聚氨酯弹性体在NCO质最分数为8％时耐溶剂性能最好。     

软质PVC／NBR共混材料改善电冰箱门封的低温弹性

研究了丁腈橡胶（ＮＢＲ）弹性体对软质聚氯乙烯低温弹性及力学性能的影响,并探讨了该共混竽电冰箱门封的加工工艺性及其优点。     

E-100扩链的聚氨酯弹性体性能的研究

以不同相对分子质量的聚醚多元醇(PPG)、TDI和3,5-二乙基甲苯二胺(DETDA)为原料,采用溶剂法合成了聚氨酯(PU)弹性体,分别研究了溶剂种类、NCO含量、聚醚多元醇相对分子质量、扩链系数等对PU弹性体力学性能的影响。结果表明,二甲苯对PU弹性体性能影响最小;PU弹性体的硬度、定伸模量、拉伸强度和撕裂强度随聚醚多元醇的相对分子质量的升高而下降,冲击弹性、伸长率和永久变形随聚醚多元醇的相对分子质量的升高而上升;当预聚体NCO质量分数为6.30%、扩链系数为0.95时,PU弹性体的综合力学性能最佳。