CN114773855A - 一种高铁牵引变流器用阻燃硅胶软管及其制备方法 - Google Patents
一种高铁牵引变流器用阻燃硅胶软管及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种高铁牵引变流器用阻燃硅胶胶料,它是由包括以下重量份数的原料制成的:100份硅橡胶,0.5~1份防老剂,2~4份硫化剂。本发明还公开了一种高铁牵引变流器用阻燃硅胶软管,由内往外依次包括内胶层、增强层、外胶层;内胶层、外胶层的胶料均为阻燃硅胶胶料,增强层由芳纶布与所述的阻燃硅胶胶料压延呈胶布后卷筒成5层而成。本发明硅胶软管的内、外胶层使用阻燃硅胶胶料,使硅胶软管具有阻燃特性,且具有良好的耐高低温特性及抗冲击性能;编织层材料稳定性好、成本低。本发明硅胶软管生产过程环保,胶管总体性能优异。本发明硅胶软管拆装容易、方便检修。
Description
技术领域
本发明属于橡胶复合材料领域,涉及一种高铁牵引变流器用阻燃硅胶胶料以及以该胶料制成的高铁牵引变流器用阻燃硅胶软管。
背景技术
牵引变流器是列车关键部件之一,主要实现电能与机械能转换。随着功率器件小型化、紧凑型发展要求,其功率密度不断增加,散热问题也就成为影响功率器可靠运行的主要因素。在牵引变流器系统中使用非去离子循环水系统的设备,采用水加防冻剂作为冷却介质直接冷却电力电子半导体器件,对冷却管的要求也逐步提升;另外,电子器件存在电路短路发生火灾的风险,故牵引变流器系统有必要选用阻燃特性材料。目前,牵引变流器使用的冷却管为金属波纹管,结构单一,由于管路结构较复杂、位置局限固定,导致冷却方式和位置受局限,同时检修、拆装不方便,后期维护成本高。且牵引变流器使用的金属波纹管,成本较高,基本为进口产品。
发明内容
本发明的目的是提供一种用于制备高铁牵引变流器用阻燃硅胶软管的胶料。
本发明的目的是通过以下技术方案实现的:
一种高铁牵引变流器用阻燃硅胶胶料,它是由包括以下重量份数的原料制成的:100份硅橡胶,0.5~1份防老剂,2~4份硫化剂。
优选的,所述的高铁牵引变流器用阻燃硅胶胶料是由包括以下重量份数的原料制成:100份硅橡胶,0.7份防老剂,2份硫化剂。
所述的防老剂为除霜剂CS-01。
所述的硫化剂为双二四硫化剂。
作为本发明所述的高铁牵引变流器用阻燃硅胶胶料的进一步优选方案,原料还包括染料,每100份硅橡胶使用1~12份染料,优选为8~11份染料。
所述的染料为蓝色色母HU-1520。通过使用适量的蓝色色母满足高铁牵引变流器用阻燃硅胶软管蓝色要求。
本发明的另一个目的是提供一种所述的高铁牵引变流器用阻燃硅胶胶料的制备方法,包括:
步骤(1)、密炼机通水冷却,控制开炼机工作室温度不超过15℃,加入硅橡胶进行塑炼,控制辊温在10℃~15℃,塑炼3~4min;
步骤(2)、加入防老剂、硫化剂进行混炼,控制辊温在10~15℃,混炼时不断的包辊、割胶,打卷6次以上,混炼8~12min,使原料混合均匀,待胶料两侧完全整齐,表面光滑无气泡,方可出片;
步骤(3)、薄通出片后,冷却到室温,得到硅胶胶料。
作为本发明所述的高铁牵引变流器用阻燃硅胶胶料的制备方法的进一步优选方案,在步骤(2)中,加入色母、防老剂、硫化剂进行混炼。
本发明的另一个目的是提供一种高铁牵引变流器用阻燃硅胶软管,由内往外依次包括内胶层、增强层、外胶层;所述的内胶层、外胶层的胶料均为所述的阻燃硅胶胶料,所述的增强层由芳纶布与所述的阻燃硅胶胶料压延呈胶布后卷筒成5层而成。
所述的高铁牵引变流器用阻燃硅胶软管的内径为38±0.2mm,内胶层的厚度为2.3±0.2mm,外胶层的厚度为1.2±0.1mm,胶布的厚度为0.8±0.1mm。
所述的芳纶布为芳纶网纹布、芳纶网眼布,优选为芳纶网纹布。
本发明的另一个目的是提供一种所述的高铁牵引变流器用阻燃硅胶软管的制备方法,包括:
步骤(1)、硅胶压延:取所述的阻燃硅胶胶料,进行压延,分别得到内层胶胶片、外层胶胶片;取所述的阻燃硅胶胶料,与芳纶布压延得到厚度0.8mm的胶布,作为增强层材料;
步骤(2)、裁布;
步骤(3)、使用自动卷筒机依次对内层胶胶片、胶布、外层胶胶片进行卷筒,并将胶布卷成5层;
步骤(4)、穿芯定型、硫化、脱芯、裁切,制得胶管。
步骤(4)中,胶管定型成异型结构(直管以外的都称为异型管)。
本发明的有益效果:
本发明阻燃硅胶软管的内、外胶层使用阻燃硅胶胶料,使硅胶软管具有阻燃特性,且具有良好的耐高低温特性及抗冲击性能;编织层材料稳定性好、成本低。本发明阻燃硅胶软管生产过程环保,胶管总体性能优异。
本发明阻燃硅胶软管可以有效降低使用成本,生产成本大概减少1/4。
本发明阻燃硅胶软管采用异型结构,结构简单,可以根据热交换器不用型号改变胶管空间结构,节省了空间,拆装容易、方便检修。
具体实施方式
下面通过具体实施方式对本发明的技术方案做进一步说明。
表1.硅胶胶料配方(单位:g)
实施例1
本实施例阻燃硅胶胶料的原料及用量如表1所示,由以下方法制备而成:
步骤(1)、密炼机通水冷却,控制开炼机工作室温度不超过15℃,加入硅橡胶a进行塑炼,控制辊温在10℃~15℃,塑炼3~4min;
步骤(2)、加入蓝色色母HU-1520、除霜剂CS-01和双二四硫化剂进行混炼,控制辊温在10~15℃,混炼时不断的包辊、割胶,打卷6次以上,混炼8~12min,使原料混合均匀,待胶料两侧完全整齐,表面光滑无气泡,方可出片;
步骤(3)、薄通出片后,冷却到室温,得到硅胶胶料。
实施例2
本实施例阻燃硅胶胶料的原料及用量如表1所示,按照实施例1制备方法制得硅胶胶料。
实施例3
本实施例阻燃硅胶胶料的原料及用量如表1所示,按照实施例1制备方法制得硅胶胶料。
实施例4
本实施例硅胶胶料的原料及用量如表1所示,按照实施例1制备方法制得硅胶胶料。
实施例1-实施例4制得的硅胶胶料的性能如表2,实施例1-实施例3制得的硅胶胶料的物理性能及阻燃性均符合要求,以实施例1制得的硅胶胶料的物理性能及阻燃性最佳,而实施例4制得的硅胶胶料的回弹性稍差。
表2.硅胶胶料性能参数
实施例5
按照表3,制备硅胶软管,制备方法如下:
步骤(1)、硅胶压延:取相应的硅胶胶料,进行压延,得到厚度2.3±0.2mm的胶片作为内层胶胶片,得到厚度1.2±0.1mm的胶片作为外层胶胶片;取与内、外层胶相同的硅胶胶料,与芳纶布压延得到厚度0.8±0.1mm的胶布,作为增强层材料;
步骤(2)、裁布:进行裁布操作;
步骤(3)、使用自动卷筒机依次对内层胶胶片、胶布(按照表3卷成相应层数)、外层胶胶片进行卷筒;
步骤(4)、进行穿芯定型、硫化、脱芯、裁切等工序,制得胶管。
表3.胶管结构
对制得的胶管进行检验,结果见表4、表5。
表4.胶管1-胶管3的尺寸及性能
表5.胶管4-胶管6的尺寸及性能
采用实施例2制得的胶料制作胶管时,内层胶有搭边痕迹,采用实施例3制得的硅胶胶料制作胶管时,内层胶有搭边痕,外层出现缺胶;若使用芳纶网眼布替换芳纶斜纹布,胶管综合性能虽不如胶管1,但也符合要求;若调整芳纶斜纹布的层数为4层或6层,胶管综合性能均不如胶管1。综上,以软管1各项性能最佳。
Claims (10)
1.一种高铁牵引变流器用阻燃硅胶胶料,其特征在于:它是由包括以下重量份数的原料制成的:100份硅橡胶,0.5~1份防老剂,2~4份硫化剂。
2.根据权利要求1所述的高铁牵引变流器用阻燃硅胶胶料,其特征在于:它是由包括以下重量份数的原料制成:100份硅橡胶,0.7份防老剂,2份硫化剂。
3.根据权利要求1所述的高铁牵引变流器用阻燃硅胶胶料,其特征在于:所述的硅橡胶的门尼粘度为45~65(ML1+4100℃)。
5.根据权利要求1所述的高铁牵引变流器用阻燃硅胶胶料,其特征在于:所述的防老剂为除霜剂CS-01;所述的硫化剂为双二四硫化剂。
6.根据权利要求1所述的高铁牵引变流器用阻燃硅胶胶料,其特征在于:所述的高铁牵引变流器用阻燃硅胶胶料的原料还包括染料,每100份硅橡胶使用1~12份染料。
7.根据权利要求6所述的高铁牵引变流器用阻燃硅胶胶料,其特征在于:所述的染料为蓝色色母HU-1520。
8.一种高铁牵引变流器用阻燃硅胶软管,其特征在于:由内往外依次包括内胶层、增强层、外胶层;所述的内胶层、外胶层的胶料均为权利要求1-7任一项所述的阻燃硅胶胶料,所述的增强层由芳纶布与权利要求1-7任一项所述的阻燃硅胶胶料压延呈胶布后卷筒成5层而成。
9.根据权利要求8所述的高铁牵引变流器用阻燃硅胶软管,其特征在于:所述的高铁牵引变流器用阻燃硅胶软管的内径为38±0.2mm,内胶层的厚度为2.3±0.2mm,外胶层的厚度为1.2±0.1mm,胶布的厚度为0.8±0.1mm。
10.一种权利要求8所述的高铁牵引变流器用阻燃硅胶软管的制备方法,其特征在于:包括:
步骤(1)、硅胶压延:取权利要求1-7任一项所述的阻燃硅胶胶料,进行压延,分别得到内层胶胶片、外层胶胶片;取权利要求1-7任一项所述的阻燃硅胶胶料,与芳纶布压延得到厚度0.8mm的胶布,作为增强层材料;
步骤(2)、裁布;
步骤(3)、使用自动卷筒机依次对内层胶胶片、胶布、外层胶胶片进行卷筒,并将胶布卷成5层;
步骤(4)、穿芯定型、硫化、脱芯、裁切,制得胶管。
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