锦纶66浸胶帘子布收缩原因探析及解决措施

就影响锦纶66浸胶帘子布布头、布尾收缩的原因进行了分析,从机头布使用的原材料、织布、缝纫方法等方面入手,通过增加机头布纬密、使用新型机头布纱以及使用超低收缩缝纫线及缩水垫布等找到了解决锦纶66浸胶帘子布布头、布尾收缩的有效方法,实现了浸胶帘子布布头、布尾处幅宽同帘布主体幅宽基本一致的目标,杜绝了浸胶帘子布布头、布尾收缩而引起的近木轴处帘布卷姿不良、边劈等问题。锦纶66浸胶帘子布外观质量得到进一步提高,最大程度地满足了客户的质量要求。     

影响浸胶帘子布附胶量的因素

针对影响锦纶66浸胶帘子布附胶量的因素进行试验、分析,找到了提高锦纶66浸胶帘子布附胶量的稳定性的方法,提高了产品质量。     

轮胎“爆胎”难题获解

正"平顶山神马帘子布发展有限公司研发的高初始黏合型锦纶66浸胶帘子布有效解决了胶线脱离、帘线裸露等问题,由浸胶帘子布与橡胶黏合不良而引发的轮胎"爆胎"问题被成功攻克。目前该产品已实现规模化生产,质量达到国际同类产品先进水平。" 10月8日,河南省科技厅有关负责人向记者介绍说。专家鉴定认为,神马帘子布公司开发的高初始黏合型浸胶帘子布解决了帘子布和橡胶压延后裁切时的胶线脱离问题,满足了高性能轮胎要求,在高初始黏合型锦纶66浸胶帘子布胶乳体系配方和浸胶工艺研究方面有     

全国锦纶帘子布优质产品评比结束

<正> 1985年全国锦纶帘子布优质产品评比工作在五月底六月初进行。参加今年评比的产品为锦纶61260D/2浸胶帘子布、锦纶66 1260D/2浸胶帘子布。评比结果为上海第十一化纤厂的双翼牌锦纶6帘子布、平顶山帘子布厂的神马牌锦纶66帘子布、北京合成纤维实验厂的华表牌锦纶6帘子布荣获1985年纺织工业部优质产品。     

锦纶浸胶帘子布评优工作结束

<正> 锦纶大、小胎浸胶帘子布评优会议于1990年5月20～22日在河南省平顶山锦纶帘子布厂召开。会议由纺织部化纤司主持。这次评比的品种是锦纶6和锦纶66的1400dtex/2浸胶帘子布和锦纶6的1400dtex/1浸胶帘子布。这次评优方法是以用户对化纤企业提供的浸胶帘子布(包括从日本、美国进口     

锦纶66浸胶帘子布生产中的张力与控制

分析了帘子布生产中张力的作用及各区段的张力情况。张力应根据生产品种及浸胶帘子布的内在质量要求来选择，一般张力设定依据为拉伸区张力是干燥区张力的１倍，定型区张力是拉伸区张力的０．６５倍。同时应控制好各区段的温度，降低拉伸应力使锦纶６６帘子布拉伸均匀，提高帘子布的物理性能。     

浸胶液调配工艺对锦纶66浸胶帘子布胶斑的影响

在锦纶66浸胶帘子布的生产过程中,浸胶液调配工艺会影响帘子布胶斑的形成。探讨了浸胶液调配中其组成物料含量、催化剂、物料混合顺序以及浸胶液p H值对帘子布胶斑的影响,利用产品缺陷智能检测系统和千米胶斑面积表征胶斑。结果表明:减小浸胶液中天然胶乳的含量,采用酚醛预聚树脂替代间苯二酚和部分甲醛,使用氢氧化钠作催化剂,在间苯二酚或酚醛预聚树脂与甲醛混合之前加入胶乳溶液,降低浸胶液p H值,可减少帘子布的千米胶斑面积;浸胶液的机械稳定性与帘子布的千米胶斑面积呈正相关性,可替代帘子布千米胶斑面积用于浸胶液的调配。     

影响锦纶浸胶帘子布粘合强度因素探讨

介绍了影响锦纶浸胶帘子布粘合强度的影响因素，而粘合强度结果的准确性直接关系到浸胶帘子布等级的判定，甚至影响到产品质量，因此通过各种实验配方对比，分析几种原材料对粘合强度的影响及试验标准存在问题的探讨，提高轮胎企业对锦纶浸胶帘子布的检测质量。     

锦纶66浸胶帘子布胶斑产生原因的探讨

分析了锦纶66浸胶帘子布胶斑产生的原因,讨论了浸胶液质量、干燥区温度、湿度、风速和排风量对胶斑形成的影响。结果表明:锦纶66浸胶帘子布的浸胶液中,间苯二酚与甲醛反应越彻底,胶斑的生成量越少;采用乙烯基吡啶胶乳制成浸胶液,并添加氢氧化钠和氨水,控制其pH值为11.2±0.5,当干燥区温度为(150±1)℃,风速18 m/s,干燥A区相对湿度(24±15)%和排风量140 m3/min,干燥B区相对湿度(18±1)%和排风量25 m3/min,供风机风量为2 200 m3/min,风速为18 m/s,选择棱角形塔顶辊,安装可调式自动清胶器,抑制胶斑形成的效果显著。     

影响PA6浸胶帘子布定负荷伸长率的因素

阐述了影响 PA6浸胶帘子布定负荷伸长率的因素。结果表明 :浸胶热处理工艺中主要是拉伸区、定型区温度高低、张力大小影响浸胶帘子布定负荷伸长 ;原丝定负荷伸长率小于 11.5 %才能确保浸胶帘子布定负荷伸长小于 80 %和外观质量 ;浸胶帘子布吸湿会造成浸胶帘子布定负荷伸长率增长。     

用于轮胎帘布层的芳纶帘子布的开发

采用芳纶1414纱线和聚酰胺66包芯纱织造芳纶帘子布,通过调整帘子布的密度,设计出了4种不同紧度的帘子布,并对织造过程中遇到的影响帘子布质量的相关问题进行分析,提出了相应的解决方案。同时,对帘子布进行力学及阻燃性能测试分析,结果表明:所设计的帘子布的抗冲击性和阻燃性能良好,可较好地应用于轮胎帘布层。     

生物基PA56纤维在乘用车轮胎冠带层中的应用研究

分别以规格为930 dtex的聚酰胺56(PA 56)纤维和聚酰胺66(PA 66)纤维为原料,经织布、浸胶,并按照乘用车冠带层压延工艺标准进行压延附胶、裁断后用于轮胎195/70R1495T XL K737和245/45ZR19102Y XL N906两种不同规格乘用车轮胎冠带层,对比考察了PA 56纤维在乘用车轮胎...     

化学纤维浸胶帘子线试验方法国家标准研究

通过广泛研究国内外的相关测试方法,在充分考虑了各类化纤浸胶帘子线特性的基础上,对浸胶帘子线的多个测试项目确定合理、统一的测试条件,开发制定了国家标准GB/T 36020-2018:研究开发了芳纶浸胶帘子线以及锦纶与芳纶并捻浸胶帘子线的附胶量测试方法;统一了胶料配方,确定了5种制样规格,确定了黏合强力测试条件,并在国内外...     

Dual-curable PVB based adhesive formulations for cord/rubber composites: The influence of reactive diluents

In this study, the effects of reactive diluent type on the adhesion strength of cord/rubber surfaces were investigated. For this purpose, a urethane acrylate oligomer was synthesized by the reaction of 2,4-toluene diisocyanate (TDI), 2-hydroxyethyl methacrylate (HEMA) and polyvinyl butyral (PVB) in the presence of di-n-butyltin dilaurate (T12) as catalyst. The structure of the oligomer was characterized by nuclear magnetic resonance (NMR) spectroscopy. Then the oligomer was included in adhesive formulations together with trimethylolpropane trimethacrylate (TMPTMA) and tricyclodecane dimethanol diacrylate (TCDDA) as reactive diluents and thermal and photo initiator respectively. Polyester/polyamide cord fabrics were dipped into the adhesive solution and cured by UV-light. Then coated fabrics were characterized by Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Contact angle measurement was employed to investigate the wettability properties of the coated fabrics. Thermal curing between the coated fabric and rubber was performed under heat and pressure. The adhesion strength between the cord/rubber surfaces was determined by T-peel test. The highest adhesion strength of 100.4 N/cm with the lowest contact angle value of 70.2° were obtained in the sample containing TCDDA as reactive diluent, due to a higher functionality resulting in a greater crosslinking density.     

低纤型930dtex/2锦纶6浸胶帘布在中小型农业驱动轮胎中的应用

研究930dtex／2锦纶6浸胶帘布在中小型农业驱动轮胎中的应用。结果表明，中小型农业轮胎生产中采用930dtex／2V1锦纶6浸胶帘布替代1400dtex／2V2锦纶66浸胶帘布为骨架材料，相应调整结构参数和工艺条件，轮胎的各项性能均符合国家标准要求，且轮胎质量减小，成本降低。     

改性锦纶66浸渍帘布的研究与应用

介绍改性锦纶66浸渍帘布的研制与应用情况，通过采取提高纺丝速度和增大喷丝头拉伸倍数等措施可制得高强度低收缩率的改性锦纶66工业丝，将其捻线和织布并采用适宜的浸渍工艺进行浸渍，制香的改性锦纶66浸渍帘布具有强度高，干热收缩率低（3.0%以下），粘合性能，耐疲劳性能和加工性能良好等优点，不仅可满足子午线和斜交轮胎的要求，而且可省去轮胎硫化后充气工序。     

930dtex/2-94锦纶66浸胶帘布在轿车子午线轮胎冠带层中的应用

试验研究930dtex/2-94锦纶66浸胶帘布在轿车子午线轮胎冠带层中的应用效果.结果表明,与930dtex/2-94改性锦纶66浸胶帘布相比,930dtex/2-94锦纶66浸胶帘布的断裂强力、H抽出力和干热收缩率低,帘线直径一致,定负荷伸长率高,两者主要性能均达到轮胎冠带层用纤维帘布指标要求.用930dtex/2-94锦纶66浸胶帘布替代930dtex/2-94改性锦纶66浸胶帘布用于轿车子午线轮胎冠带层,无需改变加工工艺和轮胎设计,成品轮胎的外缘尺寸、强度性能和高速性能基本不变,均达到相应国家标准要求,生产成本略微降低.     

Adhesion behavior of nylon tire cord/adhesive/rubber systems

In static and dynamic adhesion tests, the behavior of nylon tire cord/resorcinol-formaldehyde–latex (RFL) adhesive/rubber systems was shown to be strongly influenced by the dipping and curing conditions, cord size, and the thickness of rubber layer adjacent to cords. The nature and extent of these effects were different in three types of adhesion tests which differed in stress concentrations they induced at the cord–rubber interface. The influence of stress concentration due to increased cord size was clearly seen in dynamic adhesion tests where the peel strengths of two-ply cord/rubber samples were measured after flexing them under tension over a pulley for predetermined periods at 230°F. In these tests, the adhesion of samples with large cords weakened more rapidly than that of small cords. The static adhesion level attained with nylons 6 and 66 and other polyamide fibers was strongly dependent on the conditions (time, temperature) under which the RFL adhesive was applied and cured. At any given exposure, adhesion initially increased rapidly with the RFL curing temperature and attained a maximum above a temperature which is characteristic of the polyamide. For nylon 66, optimum adhesion was attained with different combinations of RFL curing temperatures (390–460°F) and times (20–120 sec). Finally the adhesion of nylons 6 and 66 is discussed from thermodynamic considerations based on entropy change.