橡胶的自粘和增粘

从橡胶的自粘现象探讨自粘的机理,影响自粘的内、外部因素。文中还介绍了各配合组分对自粘所起的作用,重点突出了增粘剂及增粘机理。文章归纳了如何在现实生产中提高胶料自粘性的措施。提出了防止有损于自粘效果的要点。     

胶料自粘性的测定方法及增粘树脂TKM系列的性能评价

简要介绍了增粘剂的种类、烷基增粘树脂的增粘机理,推荐一种胶料自粘性的测定方法,并将改性多元烷基酚醛树脂ＴＫＭ系列与现在通行的几种增粘树脂进行近理性粘性、实用胶料物理性能与粘性的试验对比。结果表明,增粘树脂ＴＫＭ系列产品可显提高胶料的粘性,增粘效果与粘性保持性能与对叔丁基苯酚－乙炔树脂相当,优于对叔丁基苯酚－甲醛树脂和对特辛基苯酚－甲醛树脂,具有长效、耐湿、高增粘特性。     

橡胶增粘剂TKO系列的基本性质及其增粘作用

通过展示橡胶增粘剂非热反应型对叔辛基苯酚甲醛树脂ＴＫＯ系列的红外光谱特征及其溶解度，粘度，比热容，导热系数等热力学性质，研究其对ＮＲ，ＳＢＲ，ＢＲ未硫化胶的高效增粘作用和对硫化胶物理性能的影响，以证明ＴＫＯ系列产品与国外先进同类产品的一致性。     

橡胶增粘剂TKB系列的特性及增粘作用

测定橡胶增粘剂非热反应型对－叔丁基苯酚甲醛树脂ＴＫＢ系列产品的基本热力学性质，包括溶解性，粘度；比热容和导热系数；展示出ＴＫＢ系列产品与国外同类产品对比红外光谱图，表明其与国际同类先进产品的一致性；研究ＴＫＢ系列对天然橡胶、丁苯橡胶和顺丁橡胶三种胶料的增粘作用及粘性保持性，并推荐在干胶胶料中ＴＫＢ的最佳配合量（２－６份）；提出准确评价胶料存放粘性的图解方法。     

聚硫橡胶/钴盐体系对橡胶与镀铜钢丝帘布粘合的影响

文中阐明了聚硫橡胶-环烷酸钴对胶料和镀铜钢丝帘布粘合作用的机理.     

橡胶增粘剂TKO系列产品开发及应用

TKO系列产品为对—特辛基苯酚甲醛树脂。试验表明,其增粘性能比C—H结构的石油树脂高1倍多;增粘作用之有效性、产品质量与性能均达到国外同类产品的先进水平。代表产品TKO(1)—90之粘合性研究对实际使用具有指导意义。     

自粘聚合物改性沥青防水卷材胶粘剂

在SBS改性沥青防水卷材表面涂敷一层自粘性胶粘剂并以隔离纸覆盖，使用时撕掉隔离纸直接粘贴于屋面即可粘接密封牢，不但施工方便而且消除了熔融法施工造成的污染。该胶粘剂由沥青40％～65％，SBS 5％～30％，增粘剂2％～25％和助剂5％～25％构成。胶层具有可塑性、延展性，可自行填补屋面出现的裂缝，保证防水卷材的防水密封效果。     

自粘和自粘性

自粘是一种粘合现象，即同种未硫化胶料贴合，并停放一定时间后产生的融为一体的现象。这是两个粘合表面的橡胶大分子通过分子热运动，相互扩散渗透的结果。这种粘合的牢度相当高，达到每厘米好几公斤，也就是说被粘表面存在着粘合力。这种特性是未硫化橡胶独有的，即所谓自粘性。     

胶鞋生产中的烧罐

讨论了胶鞋生产中“烧罐”事件的情况，分析其造成的原因，并提出了预防措施。     

Polyurethane Solvent-Based Adhesives for Footwear Applications

Polyurethane solvent-based adhesives with and without tackifier having different solid contents were prepared. Viscosity of adhesives was found to increase with increasing resin content. Peel strengths of adhesives before and after aging were measured on PVC-Leather substrates and TPR-Leather substrates. It is found that the tackifier improves the adhesive strength of the polyurethane. In the case of TPR-Leather substrates all adhesives give good performance immediately on application of adhesive whereas in the case of PVC-Leather substrates good results are achieved only after 24 hrs of application. Shelf-life of the adhesives is found to be 6 to 12 months.     

河南省胶鞋业发展现状和前景探讨

介绍了河南省胶鞋业的生产现状,分析了其优势和存在的问题,提出振兴河南胶鞋业的一些建议.     

鞋类橡胶部件喷霜检验方法研究

摘要：对比高温高湿-低温-高湿-低湿、盐水浸泡-水清洗-高温-低温、恒温恒湿法和臭氧法4种方法检验鞋类橡胶部件喷霜检验的效果,其中臭氧法作为鞋类橡胶部件喷霜的检验方法优于其他3种方法,50℃X3h,臭氧浓度200×10-8的老化条件进行鞋类橡胶部件喷霜检验较优。     

中橡协授予瑞安"中国胶鞋名城"称号

根据瑞安市政府和瑞安市鞋革行业协会的申请,中国橡胶工业协会组织中橡协胶鞋分会、化学工业胶鞋质量监督检验中心、全国橡胶工业信息总站胶鞋信息分站有关领导和专家到浙江瑞安市进行实地考察,认为瑞安市胶鞋工业发展很快,已成为我国重要的胶鞋生产基地,经研究决定授予“中国(瑞安)胶鞋名城”称号。2004年12月24日,“中国胶鞋名城”命名大会在浙江瑞安举行。中国橡胶工业协会秘书长范仁德宣读了中国橡胶工业协会关于授予瑞安市“中国(瑞安)胶鞋名城”称号的决定,中国橡胶工业协会胶鞋分会理事长汪海代表中国橡胶工业协会向瑞安市政府授牌,…     

加成型液体硅橡胶用含环氧基的有机硅增粘剂的制备、表征及性能

以烯丙基缩水甘油醚和四甲基环四硅氧烷为原料,制备加成型液体硅橡胶用含环氧基的有机硅增粘剂。用红外光谱和核磁共振氢谱对其结构进行了表征,考察了加入量对硅橡胶胶料黏度及硫化胶硬度、介电常数、介质损耗因数、绝缘电阻率、电气强度、粘接性能及封装二极管高温反向漏电流的影响。结果表明:增粘剂能提高硅橡胶的粘接强度;影响其绝缘电阻率和电气强度;降低封装二极管的高温反向漏电流;基本不影响硅橡胶胶料黏度及硫化橡胶的硬度、介电常数、介质损耗因数。     

2014年上半年我国胶鞋行业经济运行情况

2014年1-6月我国胶鞋行业的经济运行平稳,我国胶鞋出口单价有所提高。近年来我国胶鞋行业供大于求的局面加剧,胶鞋企业向东南亚以及我国中西部地区转移。我国胶鞋的进口单价仍远高于出口单价,美国一直是我国胶鞋出口量和出口额第一的国家。调整产品结构、逐步转型升级、打造品牌竞争力是我国胶鞋行业发展的必由之路。     

Rheological and Morphological Evaluation of Natural Rubber Latex-Based PSAs Containing Waterborne Aliphatic Hydrocarbon Tackifier Dispersions

The effect of three waterborne aliphatic hydrocarbon tackifier dispersions each with different softening points (70°C, 85°C, and 95°C) were evaluated with natural rubber latex at two addition levels (25% and 50%) for pressure-sensitive adhesive (PSA) applications. No other additives were incorporated into the PSA formulations so that rheological effects of waterborne aliphatic hydrocarbon tackifier resin dispersions in natural rubber-based PSAs could be clearly understood. Application of these waterborne PSAs was evaluated, in terms of rheology, since flow parameters have a very important influence on the convertibility (coating ability) of such adhesives. Morphological correlations with wet rheology for these waterborne PSA formulations and starting materials revealed that the interaction between the latex particle and tackifier dispersion particle has a major influence in determining the viscosity characteristics at low to medium shear rate, where stirring, pumping, and filtration processes occur. A shear-thinning effect was also predominant in formulations with lower tackifier dispersion levels. The extent of shear-thinning can be correlated well to morphology. Interestingly, all the PSA formulations tend to follow Newtonian behavior above a shear rate of 1000 s^?1 and no shear-thinning or shear-thickening at higher shear rates was observed. The minimal change in viscosity at higher shear rates is a key parameter for high-speed coating techniques such as curtain coating and reverse gravure, since any change in viscosity can affect coating uniformity and the wetting of the substrate surface during coating.     

间戊二烯基石油树脂的合成及在橡胶型压敏胶中的应用

由间戊二烯浓液合成了浅色,高软化点和合适熔融粘度的间戊二烯石油树脂,产品可与天然橡胶配合制压敏胶,与萜烯树脂增粘剂比较,其初粘、剥离力和持粘性较好平衡,且色浅和价格低。     

Interfacial reactions and self-adhesion of polydimethylsiloxanes

Polydimethylsiloxane (PDMS) oil and crosslinked rubber react with hydroxylated surfaces, when heated at 250-300°C. PDMS is thus chemically bound to silicate glass sheets and to iron hydrous oxide particles. As a result, stable and adherent PDMS coatings may be obtained over glass, by heating silicone oil spread over glass sheets. Glass-PDMS-glass adhesive joints can also be obtained by heating preformed, crosslinked silicone sheets between glass parts. Also, PDMS rubber is heat-stabilized by in situ-generated iron hydrous oxide particles. These results are explained by considering that active Si-O chain ends, formed by chain scission, bind to surface hydroxyl groups, in a reaction competitive with the formation of cyclic oligomers. PDMS can thus be seen as a thermally-activated, reactive adhesive.