疲劳温度对橡胶与钢丝帘线动态粘合性能的影响

采用自行研发的钢丝帘线与橡胶动态粘合性能的测试方法,考察动态疲劳温度对钢丝帘线/硫化橡胶粘合性能的影响。结果表明,随疲劳温度的升高,橡胶与钢丝帘线的抽出力先增大后降低,在60℃出现最大值,抽出力F与疲劳温度T有以下相关性:F=1 006+3.816 43T-0.033 39T2;抽出钢丝帘线附胶呈螺纹状,且螺纹方向与外缠绕钢丝方向并不总是相一致;附胶越多,抽出力越大;随疲劳温度的升高,橡胶与钢丝帘线界面处的橡胶断面上出现了越来越大的填料聚集体颗粒,这会成为粘合失效的诱因。     

疲劳次数对钢丝帘线/橡胶粘合性能的影响

采用自行研发的测试方法,研究疲劳次数对钢丝帘线/橡胶粘合性能的影响。结果表明:随着疲劳次数的增加,钢丝帘线的抽出力先增大后减小,当疲劳60万次时抽出力达到最大值;抽出钢丝帘线附胶形态无明显差别,且呈螺纹状;附胶越多,抽出力越大。扫描电子显微镜分析表明,钢丝帘线与橡胶界面处的橡胶断面上出现了更多的大粒径填料聚集体颗粒,成为粘合破坏点。     

镀层对钢丝帘线与橡胶粘合性能的影响

研究高铜镀层(铜质量分数为0.670)和低铜镀层(铜质量分数为0.635)钢丝帘线与橡胶的粘合性能.结果表明,高铜镀层钢丝帘线与橡胶的初始粘合性能较好,但其老化后粘合性能下降明显;只要胶料配方合理,低铜镀层钢丝帘线与橡胶的初始粘合性能可接近高铜镀层钢丝帘线,而其老化后粘合性能明显优于高铜镀层钢丝帘线.     

影响钢丝帘线与橡胶粘合性能的主要因素

分析了影响子午线轮胎用钢丝帘线与橡胶粘合性能的主要因素,其中包括钢线帘线的镀层组分及厚度、结构、表面状态、操作、包装贮存条件以及子午线轮胎的结构和胶料配方设计及生产工艺等因素。     

粘合剂对橡胶IN丝帘线动态粘合性能的影响

采用子午线轮胎胎体配方,利用自主研发的动态粘合性能测试方法,考察了改性粘合剂PN759代替间苯二酚对橡胶／钢丝帘线动静态粘合性能的影响。结果表明,等用量PN759代替间苯二酚时,钢丝帘线动静态粘合性能均略有提高,而且PN759用量为1．5份时粘合性能最佳。所有试样屈挠疲劳次数超过20万次后,抽出力均下降。抽出钢丝上的附胶呈螺纹状态,其方向与帘线缠绕方向无关;附胶螺纹形态越明显,抽出力就越大。加入粘合剂后,抽出疲劳破坏现象主要发生在橡胶相处,而非粘合界面处。     

钴盐对钢丝帘线与橡胶粘合性能的影响

对环烷酸钴，硼酰化钴，新癸酸钴等钴盐粘合增进剂对高和低铜质量分数钢丝帘线与橡胶粘合性能的影响进行了研究。结果表明，胶料中加入钴盐能够提高强伸性能和与钢丝帘线的初始粘合唱 力及耐盐水老化能力。     

试样因素对橡胶-钢丝帘线粘合性能测试的影响

研究夹持方式和钢丝帘线埋入长度对橡胶-钢丝帘线粘合性能测试结果的影响。结果表明:采用槽式结构夹具可以消除夹紧力对橡胶-钢丝帘线抽出力测试结果的影响;随着钢丝帘线埋入基体橡胶长度的增大,静态抽出力和最大伸长量均增大,但单位长度粘合强度随之呈指数衰减;橡胶-钢丝帘线的粘合存在摩擦力,钢丝帘线埋入橡胶长度越大,粘合失效到完全粘合失效经历的时间越长。     

Adhesion Between Rubber Compounds Containing Various Adhesion Promoters and Brass-Plated Steel Cords. Part I. Effect of Sulfur Loading in Rubber Compounds

The adhesion property between rubber compounds containing different types of adhesion promoters (resinous adhesion promoter (containing both methylene donor and methylene acceptor), cobalt salt and zinc borate) and different loading amounts of sulfur and brass-plated steel cords was investigated to understand the effect of sulfur loading in the rubber compounds on their adhesion characteristics to the brass-plated steel cords. The adhesion property of the rubber compounds to brass-plated steel cords was largely dependent on both the type of adhesion promoter and the loading amount of sulfur in the rubber compounds. The pull-out force of adhesion samples increased significantly with increasing loading amount of sulfur in the rubber compounds containing resinous adhesion promoter, whereas it decreased slightly with increasing loading amount of sulfur in rubber compounds containing cobalt salt or zinc borate. In humidity aging, the best adhesion retention was observed in the rubber compound containing zinc borate and low loading of sulfur. Regardless of the type of adhesion promoter, adhesion retention after thermal aging treatments improved with increasing loading amount of sulfur in the rubber compounds. The adhesion property was interpreted in terms of the interphases formed between the rubber compounds and the brass-plated steel cords as studied using Auger electron spectroscopy.     

浅析胶料与镀铜钢丝帘线粘合的影响因素

采用正交设计法和对比试验法，考察了硫黄、氧化锌、促进剂、炭黑以及某些工艺条件对胶料与镀铜钢丝帘线粘合力的影响。结果表明，硫黄品种对粘合力的影响不大；氧化锌用量增大，粘合力增大；用１．０份促进剂ＣＺ时的粘合力大于用１．３份促进剂ＤＺ；使用高结构炭黑可增大粘合力；胶料的混炼方法和硫化时间对粘合力的影响较大。     

钴盐用量对橡胶与钢丝帘线粘合性能的影响

对硼酰化钴ＭＣ２３（钴质量分数为２３％）用量（０６～１６份）对橡胶与钢丝帘线粘合性能的影响进行研究。采用的基本配方为：ＮＲ１０００；炭黑Ｎ３２６６２０；芳烃油８０；氧化锌９０；硬脂酸０５；防老剂４０２０２０；不溶性硫黄ＩＳ７０２０６０；促进剂ＤＺ１０；粘合剂ＲＳ３５；粘合剂Ａ２３；沉淀法白炭黑５０。结果表明，随着钴盐用量的增大，在未老化、热空气老化及盐水老化条件下，胶料与钢丝的粘合强度有所提高；在湿热老化条件下，粘合强度由于热量和湿气的交互作用而发生较大幅度的下降，但钴盐用量在１０份时粘合强度的下降为最小。综合胶料初始和老化后的应力应变性能和粘合强度，以１０份钴盐用量为最佳。     

粘合体系对橡胶-镀锌钢丝绳粘合性能的影响研究

研究钴盐粘合体系、树脂类粘合体系和钴盐与树脂并用粘合体系对阻燃钢丝绳芯输送带粘合胶粘合性能的影响。结果表明:3种粘合体系对橡胶与镀锌钢丝绳的粘合均有增进作用,硼酰化钴的增进效果比粘合剂RE/A显著,硼酰化钴和粘合剂RE/A并用体系粘合胶的粘合性能最佳;硼酰化钴分别与粘合剂RK/A或粘合剂PER或粘合剂AS-88组成粘合体系时,粘合胶粘合性能优于硼酰化钴与粘合剂RE/A体系粘合胶,且胶料加工安全性好,硫化胶物理性能优异。     

橡胶帘线粘合性能在动态及加热条件下的评价方法

橡胶-帘线(包括钢丝帘线)复合材料在动态条件下粘结界面发生物理化学变化,直接影响材料使用性能。介绍橡胶-帘线动态剪切粘合试验基本原理:将帘线埋于方块硫化橡胶试样中,帘线两端悬以质量不同的砝码。试验时橡胶试样以一定的振幅和频率沿帘线伸延方向做往复运动,考察帘线与橡胶达到某一设定的粘合强度值所需的时间,用以表征帘线与橡胶在动态条件下的粘合性能。应用该原理和实用仪器对不同材质橡胶-帘线粘合性能做出测试和评价。     

聚酯帘线与橡胶粘合用RFL改性剂的合成

从改性一次浸渍工艺出发,以4-氯间苯二酚、间苯二酚和甲醛为原料合成出了RFL改性剂,结果表明,当酚醛比为1:2、反应时间为6h时收率最佳,在RFL浸渍液中加入改性剂后可以大幅提高聚酯帘线与橡胶的粘合强度。     

Effect of Tetrachlorobenzoquinone on the Adhesion between Rubber Compound and Brass-plated Steel Cord

The adhesion between tetrachlorobenzoquinone (TCBQ)-loaded rubber compound and brass-plated steel cord was studied to understand the role of TCBQ as an adhesion promoter. With loading of TCBQ in the rubber compound the cure rate became slow, but the change in physical properties was not significant. An improvement of the adhesion was obvious with low loading of TCBQ at the range of 0.5 phr while an adverse effect was observed with high loading at 2 phr. The addition of TCBQ for the improvement of adhesion has a greater effect before aging because TCBQ contributes to form a large surface area of copper sulfide via accelerated copper diffusion into the rubber bulk. However, higher TCBQ loading as well as longer aging time leads to a great extent of copper migration into the rubber and excess growth of zinc oxide layer, resulting in decreased adhesion. The adhesion interphase before aging, between a thin brass film and a rubber compound, investigated using AES showed no difference except that sulfur increased with increasing TCBQ loading. On the other hand, the adhesion inter-phase was changed after humidity aging. The copper content decreased at the adhesion interphase while it increased in the rubber layer with increasing addition of TCBQ.